CROSSLINKED RESIN MOLDED BODY, CROSSLINKABLE RESIN COMPOSITION, METHOD OF PRODUCING THESE, SILANE MASTER BATCH, AND MOLDED ARTICLE

Abstract

A production method, containing the step of: mixing 0.02 to 0.6 parts by mass of an organic peroxide, 0.2 to 300 parts by mass of an inorganic filler, 2 to 15.0 parts by mass of a silane coupling agent, and a silanol condensation catalyst, based on 100 parts by mass of a polyolefin-based resin, in which the inorganic filler has an X value specified by Formula (I) satisfies 5 to 1050,

X=A/B Formula (I)

wherein, A denotes a total amount of a product of a BET specific surface area (m.sup.2/g) of the inorganic filler and a blending amount of the inorganic filler, and B denotes a blending amount of the silane coupling agent; and a crosslinkable resin composition and a crosslinked resin molded body produced by the production method; and a silane master batch and a molded article.

Claims

1. A method of producing a crosslinked resin molded body, the method comprising: (1) mixing 0.02 to 0.6 parts by mass of an organic peroxide, 0.2 to 300 parts by mass of an inorganic filler, 2 to 15.0 parts by mass of a silane coupling agent, and a silanol condensation catalyst, based on 100 parts by mass of a polyolefin-based resin comprising a styrene-based elastomer, to obtain a mixture; (2) molding the mixture obtained in (1) to obtain a molded body; and (3) contacting the molded body obtained in (2) with water, to obtain a crosslinked resin molded body, wherein: the mixing (1) comprises: (a) mixing the organic peroxide, the inorganic filler in which an X value specified by Formula (I) satisfies 5 to 1050, and the silane coupling agent, to obtain a mixture (a):
X=A/B (I), in which: A denotes a total amount of a product of a BET specific surface area (m.sup.2/g) of the inorganic filler and a blending amount of the inorganic filler, and B denotes a blending amount of the silane coupling agent; (b) melting and mixing the mixture (a) with a whole or part of the polyolefin-based resin at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to obtain a melted mixture (b); (c) mixing the silanol condensation catalyst with, as a carrier resin, a resin different from the polyolefin-based resin or a remaining portion of the polyolefin-based resin, to obtain a mixture (c); and (d) mixing the melted mixture (b) with the mixture (c).

2. The method of claim 1, wherein a mixing amount of the silane coupling agent is more than 4 parts by mass and 15.0 parts by mass or less, with respect to 100 parts by mass of the polyolefin-based resin.

3. The method of claim 1, wherein the silane coupling agent is vinyltrimethoxysilane or vinyltriethoxysilane.

4. The method of claim 1, wherein the inorganic filler is at least one selected from the group consisting of silica, aluminum hydroxide, magnesium hydroxide, calcium carbonate, magnesium carbonate, kaolin, zinc borate, zinc hydroxystannate, and talc.

5. A method of producing a crosslinkable resin composition, the method comprising mixing 0.02 to 0.6 parts by mass of an organic peroxide, 0.2 to 300 parts by mass of an inorganic filler, 2 to 15.0 parts by mass of a silane coupling agent, and a silanol condensation catalyst, based on 100 parts by mass of a polyolefin-based resin comprising a styrene-based elastomer, said mixing comprising: step (a) mixing the organic peroxide, the inorganic filler in which an X value specified by Formula (I) satisfies 5 to 1050, and the silane coupling agent, to obtain a mixture (a):
X=A/B (I) wherein: A denotes a total amount of a product of a BET specific surface area (m.sup.2/g) of the inorganic filler and a blending amount of the inorganic filler, and B denotes a blending amount of the silane coupling agent; (b) melting and mixing the mixture (a) with a whole or part of the polyolefin-based resin at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to obtain a melted mixture (b); (c) mixing the silanol condensation catalyst with, as a carrier resin, a resin different from the polyolefin-based resin or a retraining portion of the polyolefin-based resin, to obtain a mixture (c); and (d) mixing the melted mixture (b) with the mixture (c).

6. A crosslinkable resin composition produced by the method of claim 5.

7. A crosslinked resin molded body produced by the method of claim 1.

8. A molded article, comprising the crosslinked resin molded body of claim 7.

9. A silane master batch used for producing a crosslinkable resin composition prepared by mixing 0.02 to 0.6 parts by mass of an organic peroxide, 0.2 to 300 parts by mass of an inorganic filler, 2 to 15.0 parts by mass of a silane coupling agent, and a silanol condensation catalyst, based on 100 parts by mass of a polyolefin-based resin comprising a styrene-based elastomer, wherein the silane master batch is prepared through the following steps (a) and (b): (a) mixing the organic peroxide, the inorganic filler in which an X value specified by Formula (I) satisfies 5 to 1050, and the silane coupling agent to obtain a mixture (a)
X=A/B (I), wherein, A denotes a total amount of a product of a BET specific surface area (m.sup.2/g) of the inorganic filler and a blending amount of the inorganic filler, and B denotes a blending amount of the silane coupling agent; and (b) melting and mixing the mixture (a) with a whole or part of the polyolefin-based resin at a temperature equal to or higher than a decomposition temperature of the organic peroxide.

Description

EXAMPLES

[0189] The present invention is described in more detail based on examples given below, but the present invention is not limited by the following examples.

[0190] In addition, in Table 1 to Table 5, the numerical values for incorporated amounts of the respective Examples and Comparative Examples are in terms of part by mass.

[0191] With regard to Examples 1 to 33 and Comparative Examples 1 to 6 each, operation was carried out by using the following components, and setting respective specifications to conditions shown in Table 1 to Table 5 each, and evaluations to be described later were carried out.

[0192] The details of each compounds in tables 1 to 5 are described below.

<Polyolefin-Based Resin>

(Polyethylene: PE)

[0193] EVOLUE SP0540F (trade name, manufactured by Prime Polymer Co., Ltd., linear metallocene polyethylene (LLDPE))

[0194] UE320 (NOVATEC PE (trade name), manufactured by Japan Polyethylene Corporation, linear low-density polyethylene (LLDPE))

(Ethylene-Vinyl Acetate Copolymer: EVA)

[0195] V5274 (EVAFLEX V5274 (trade name), ethylene-vinyl acetate copolymer resin, content of VA: 17 mass %, manufactured by Dupont-Mitsui Polychemicals Co., Ltd.)

(Polypropylene: PP)

[0196] PB222A (trade name, manufactured by SunAllomer Ltd., random polypropylene)

(Ethlylene Propylene Diene Rubber: EPDM)

[0197] NORDEL IP-4760P (trade name, manufactured by Dow Chemical Japan Ltd.)

[0198] NORDEL IP-4520P (trade name, manufactured by Dow Chemical Japan Ltd.)

(Styrene-Based Elastomer: SEPS)

[0199] SEPTON 4077 (trade name, manufactured by Kuraray Co., Ltd., SEPS, content of styrene: 30 mass %)

(OIL)

[0200] DIANA PROCESS OIL PW-90 (trade name, manufactured by Idemitsu Kosan Co., Ltd., paraffin oil)

<Silica>

[0201] Aerosil 200 (trade name, manufactured by Japan Aerosil corporation, hydrophilic fumed silica, amorphous silica, BET specific surface area Yi: 200 m.sup.2/g)

[0202] CRYSTALITE 5X (trade name, manufactured by Tatsumori Ltd., crystalline silica, BET specific surface area Yi: 12 m.sup.2/g)

[0203] AEROSIL 90 (trade name, manufactured by Japan Aerosil corporation, hydrophilic fumed silica, amorphous silica, BET specific surface area Yi: 90 m.sup.2/g)

[0204] AEROSIL OX50 (trade name, manufactured by Japan Aerosil corporation, hydrophilic fumed silica, amorphous silica, BET specific surface area Yi: 50 m.sup.2/g)

[0205] SFP-20M (trade name, manufactured by Denka Company Limited., crystalline silica, BET specific surface area Yi: 11.3 m.sup.2/g)

[0206] SFP-30M (trade name, manufactured by Denka Company Limited., crystalline silica, BET specific surface area Yi: 6.2 m.sup.2/g)

<Inorganic Filler Other than Silica>

(Calcium Carbonate)

[0207] Softon 1200 (trade name, manufactured by BIHOKU FUNKA KOGYO CO., LTD., BET specific surface area Yi: 1.2 m.sup.2/g)

[0208] Softon 2200 (trade name, manufactured by BIHOKU FUNKA KOGYO CO., LTD., BET specific surface area Yi: 2.2 m.sup.2/g)

(Magnesium Hydroxide)

[0209] MAGSEEDS X-6 (trade name, manufactured by Konoshima Chemical Co., Ltd.) , BET specific surface area Yi: 5 m.sup.2/g)

[0210] MAGSEEDS X-6F (trade name, manufactured by Konoshima Chemical Co., Ltd., BET specific surface area Yi: 8 m.sup.2/g)

[0211] KISUMA 5L (trade name, manufactured by Kyowa Chemical Industry Co., Ltd., BET specific surface area Yi: 5.8m.sup.2/g)

(Aluminium Hydroxide)

[0212] Higilite H42M (trade name, manufactured by SHOWA DENKO K.K., BET specific surface area Yi: 5 m.sup.2/g)

(Aluminium Oxide Monohydrate)

[0213] Boehmite (trade name, manufactured by Konoshima Chemical Co., Ltd., BET specific surface area Yi: 5 m.sup.2/g)

(Talc)

[0214] k-1 talc (trade name, manufactured by Nippon Talc Co., Ltd., BET specific surface area Yi: 7 m.sup.2/g)

<Silane Coupling Agent>

[0215] KBM1003 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd., Vinyltrimethoxysilane)

<Organic Peroxide>

[0216] PERHEXA 25B (trade name, manufactured by NOF CORPORATION., 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, temperature of decomposition:149 C.)

<Silanol Condensation Catalyst>

[0217] ADKSTAB OT-1 (trade name, manufactured by ADEKA CORPORATION, dioctyltin dilaurate)

<Antioxidizing Agent>

[0218] IRGANOX 1010 (trade name, manufactured by BASF, pentaerythritol tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate])

Examples 1 to 33 and Comparative Examples 1 to 6

[0219] In each Example, part of a polyolefin-based resin (25 parts by mass based on a total amount of the polyolefin-based resin) was used as a carrier resin of a crosslinking promotion master batch (may be referred to as a crosslinking promotion MB in several cases). As this carrier resin, polyethylene UE320 being one of resin components which constitute the polyolefin-based resin was applied.

[0220] First, with regard to Examples and Comparative Examples each excluding Examples 2, 3, 5, 7, 11, 13 and 17, an inorganic filler, a silane coupling agent and organic peroxide were dry-blended at room temperature (25 C.) for 3 minutes in blending proportions shown in a column composition P (composition of silane master batch) in Table 1 to Table 5 each.

[0221] Next, the mixture obtained and remaining components shown in the column composition P in Table 1 to Table 5 each were charged into a 2 L Banbury mixer manufactured by Nippon Roll MFG. Co. Ltd. in blending proportions shown in the column composition P in Table 1 to Table 5 each. A silane master batch (may be referred to as a silane MB in several cases) was obtained by kneading the resultant mixture at a revolution speed of 35 rpm for about 12 minutes by using this mixer, and then discharging the resultant material therefrom at a material discharge temperature of 180 to 190 C.

[0222] With regard to Examples 2, 3, 5 and 7 each, all components shown in a column composition P in Table 1 were charged into a 2 L Banbury mixer manufactured by Nippon Roll MFG. Co. Ltd. in blending proportions shown in a column composition P in Table 1. A silane MB was obtained by idling this mixer for 2 minutes, and then kneading the resultant mixture for about 12 minutes, and then discharging the resultant material therefrom at a material discharge temperature of 180 to 190 C.

[0223] With regard to Examples 11, 13 and 17, first, a silane coupling agent and organic peroxide were mixed at room temperature (25 C.) in blending proportions shown in a column composition P in Table 2 and Table 3 each. Then, a polyolefin-based resin, an inorganic filler and an antioxidant were charged into a 2 L Banbury mixer manufactured by Nippon Roll MFG. Co. Ltd., and then a blend of the silane coupling agent and the organic peroxide was put into the mixer. Then, a silane MB was obtained by mixing the charged components at room temperature (25 C.) in the Banbury mixer, followed by melting and mixing the resultant material at a material discharge temperature of 180 C. to 190 C. and at a revolution speed of 35 rpm for about 15 minutes.

[0224] The silane MB obtained in the Examples 1 to 33 contains at least two kinds of silane crosslinkable resins in which silane coupling agents were graft reacted onto the polyolefin-based resin.

[0225] The column composition P in Table 1 to Table 5 each shows, in addition to the blending amount of each component, an X value specified by Formula (I), and the like.

[0226] Next, the components shown in the column composition Q (crosslinking promotion MB) in Table 1 to Table 5 each were mixed by the Banbury mixer in blending proportions shown in the column composition Q in Table 1 to Table 5 each, and then melt and mixed the resultant material at a material discharge temperature of 180 to 190 C., and thus the crosslinking promotion MB was obtained.

[0227] Next, the silane MB and the crosslinking promotion MB were dry-blended in blending proportions shown in a column mixing ratio in Table 1 to Table 5 each, and the resultant blend was introduced into a 40 mm extruder in which L/D =24 (a compression zone screw temperature: 190 C., a head temperature: 200 C.), and while the blend was melted and mixed in an extruder screw, was molded into two kinds of sheet-shaped molded bodies each having a thickness of 1 mm and 2 mm by T-die extrusion.

[0228] Moreover, in a similar manner, an electric wire having an outer diameter of 2.8 mm was obtained by coating the silane MB and the crosslinking promotion MB at a thickness of 1 mm outside a 1/0.8 TA conductor by using the extruder.

[0229] The thus-obtained two kinds of the sheet-shaped molded bodies and the electric wire were allowed to stand for 24 hours under an atmosphere of a temperature of 60 C. and a humidity of 95%. Thus, sheets composed of the two kinds of crosslinked resin molded bodies, respectively, and an insulated wire having the crosslinked resin molded body as a coating were produced.

[0230] In addition, in all of the two kinds of sheets and the insulated wire produced in Comparative Example 1, the crosslinked resin molded bodies were foamed.

[0231] The sheets and the electric wires thus manufactured were subjected to the following evaluation, and the results thereof are shown in Tables 1 to 5.

<Mechanical Property>

[0232] A tensile test was conducted on the sheet having a thickness of 1 mm produced in each Example. This tensile test was conducted, based on JIS K 6723, by using a JIS No. 3 dumbbell test specimen prepared by punching the crosslinked resin molded body sheet. Tensile strength (MPa) and elongation (%) were measured by conducting the test at a measuring temperature of 25 C., a gauge length of 20 mm and a tensile speed of 20 mm/min.

[0233] A case where the tensile strength is 10 MPa or more is deemed to be passable in the present test, and a case where the elongation is 200% or more is deemed to be passable in the present test.

<Heating Deformation Test (Sheet)>

[0234] The following heating deformation test was conducted as heat resistance of the sheet composed of the crosslinked resin molded body. As this heating deformation test, a heating deformation ratio was measured on the sheet having a thickness of 2 mm, based on the heating deformation test specified in JIS K 6723, under conditions of a measuring temperature of 120 C. and a load of 5 N.

[0235] As an evaluation, a case where the heating deformation ratio is 40% or less is deemed to be passable in the present test, and a case where the ratio is over 40% is deemed to be not passable in the present test (expressed by C in Table 1 to Table 5).

[0236] In Table 1 to Table 5, with regard to the results of the heating deformation test of the sheet, the following evaluation symbols are simultaneously described in addition to the heating deformation ratios. As the evaluation symbols, a case where the heating deformation ratio is deemed to be not passable is expressed by C, a case where the heating deformation ratio is over 35% and 40% or less is expressed by B, a case where the heating deformation ratio is over 30% and 35% or less is expressed by A, and a case where the heating deformation ratio is 30% or less is expressed by AA.

<Heating Deformation Test (Electric Wire)>

[0237] The following heating deformation test was conducted as heat resistance of the electric wire composed of the crosslinked resin molded. In this heating deformation test, a reduction in thickness of the insulated wire was measured, based on JIS C 3005, under conditions of a measuring temperature of 120 C. and a load of 5 N.

[0238] As an evaluation, a case where the reduction ratio is 50% or less is deemed to be passable in the present test, and a case where the ratio is over 50% is deemed to be not passable in the present test

[0239] In Table 1 to Table 5, with regard to the results of the heating deformation test of the electric wire, the following evaluation symbols are simultaneously described in addition to the reduction ratios. As the evaluation symbols, a case where the reduction ratio is deemed to be not passable is expressed by C, a case where the reduction ratio is over 40% and 50% or less is expressed by B, a case where the reduction ratio is over 35% and 40% or less is expressed by A, and a case where the reduction ratio is 35% or less is expressed by AA.

<Extrusion Appearance Characteristics of Insulated Wire>

[0240] Extrusion appearance characteristics of the insulated wire were evaluated by observing extrusion appearance upon producing the insulated wire. Specifically, upon extruding a melted mixture of silane MB and crosslinking promotion MB at a linear speed of 15 m/min in an extruder having a screw diameter of 30 mm, the insulated wire in which appearance was good (no aggregated substances or defects were observed with naked eyes) was taken as A, the insulated wire in which appearance was relatively bad (aggregated substances or defects were observed with naked eyes but which insulated wire can be used) was taken as B, and the insulated wire I in which the appearance was remarkably bad (in which a number of the aggregated substances or defects were observed with naked eyes and which insulated wire can't be used) was taken as C. A and B are deemed to be passable in the present test.

TABLE-US-00001 TABLE 1 Examples 1 2 3 4 5 6 7 8 Composition P Polyolefin- PE EVOLUE 15 15 15 15 15 15 15 15 based SP0540F resin UE320 EVA V5274 PP PB222A 5 5 5 5 5 5 5 5 EPDM NORDEL 25 25 25 25 25 25 25 IP- 4760P NORDEL 10 10 10 10 10 10 10 IP- 4520P SEPS SEPTON 30 4077 OIL DIANA 20 25 20 20 20 20 20 20 PROCESS PW-90 Silica Yi (m.sup.2/g) Aerosil 200 1 0.3 10 9 7 6.5 200 CRYSTALITE 12 60 5X Aerosil 90 90 Aerosil 50 0X50 SFP-20M 11.3 SFP-30M 6.2 Calcium Softon 1.2 carbonate 1200 Softon 2.2 2200 Magnesium MAGSEEDS 5 hydroxide X-6 MAGSEEDS 8 X-6F KISUMA 5.8 51 Aluminum Higilite 5 hydroxide H42M Aluminum Boehmite 5 oxide Talc k-1 talc 7 60 Total blending amount of inorganic 1 0.3 10 9 7 6.5 60 60 filler (parts by mass) Silane KBM1003 6 8 2 3 3.2 4 6 6 coupling agent Organic PERHEXA 2513 0.1 0.1 0.1 0.1 0.1 0.2 0.1 0.1 peroxide Antioxidizing agent IRGANOX 1010 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Total 82.2 83.5 87.2 87.2 85.4 85.8 141.2 141.2 (parts by mass) Formula (I) A 200 60 2000 1800 1400 1300 720 420 X 33.3 7.5 1000 600 437.5 325 120 70 Composition Q PE UE320 25 25 25 25 25 25 25 25 Silanol ADKSTAB 0T-1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 condensation catalyst Antioxidizing agent IRGANOX 1010 1 1 1 1 1 1 1 1 Total (parts by mass) 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 Mixing ratio Composition P Mixing amount 82.2 83.5 87.2 87.2 85.4 85.8 141.2 141.2 (parts by mass) Composition Q Mixing amount 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 (parts by mass) Total 108.4 109.7 113.4 113.4 111.6 112 167.4 167.4 Evaluation of Tensile Mpa 18.2 15.3 18.1 18.1 18.1 18.4 15.4 12.6 sheet strength Elongation % 633 651 313 313 313 320 538 447 Heating Heating deformation 17 31 39 33 28 19 11 10 deformation ratio (%) test Evaluation symbol AA A B A AA AA AA AA Evaluation Extrusion appearance characteristics A B A A A A A A of insulated Heating Heating deformation 25 37 49 36 31 27 21 18 wire deformation ratio (%) test Evaluation symbol AA A B A AA AA AA AA

TABLE-US-00002 TABLE 2 Examples 9 10 11 12 13 14 15 16 Compostion P Polyolefin- PE EVOLUE 15 15 15 15 15 15 15 15 based resin SP0540F UE320 EVA V5274 PP PB222A 5 5 5 5 5 5 5 5 EPDM NORDEL 25 25 25 25 25 25 25 IP- 4760P NORDEL 10 10 10 10 10 10 10 IP- 4520P SEPS SEPTON 30 4077 OIL DIANA 20 20 20 20 20 20 20 25 PROCESS PW-90 Silica Yi (m.sup.2/g) Aerosil 200 200 CRYSTALITE 12 5X Aerosil 90 90 1 Aerosil 50 1 0X50 SFP-20M 11.3 60 SFP-30M 6.2 60 Calcium Softon 1.2 60 carbonate 1200 Softon 2.2 60 30 120 2200 Magnesium MAGSEEDS 5 hydroxide X-6 MAGSEEDS 8 X-6F KISUMA 5L 5.8 Aluminum Higilite 5 hydroxide H42M Aluminum Boehmite 5 oxide Talc k-1 talc 7 Total blending amount of inorganic 1 1 60 60 60 30 120 60 filler (parts by mass) Silane KBM1003 6 6 4 6 6 8 2 8 coupling agent Organic PERHEXA 25B 0.1 0.1 0.1 0.07 0.1 0.1 0.1 0.1 peroxide Antioxidizing IRGANOX 1010 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 agent Total (parts 82.2 82.2 139.2 141.17 141.2 113.2 197.2 143.2 by mass) Formula (I) A 90 50 673 372 132 66 264 72 X 15 8.3 169.5 62 22 8.25 132 9 Composition Q PE UE320 25 25 25 25 25 25 25 25 Silanol ADKSTAB 0T-1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 condensation catalyst Antioxidizing IRGANOX 1010 1 1 1 1 1 1 1 1 agent Total (parts by mass) 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 Mixing ratio Composition P Mixing amount 82.2 82.2 139.2 141.17 141.2 113.2 197.2 143.2 (parts by mass) Composition Q Mixing amount 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 (parts by mass) Total 108.4 108.4 165.4 167.37 167.4 139.4 223.4 169.4 Evaluation of Tensile Mpa 17.2 16.3 16.9 18 14.1 15.4 10.3 14.6 sheet strength Elongation % 592 645 550 534 563 589 341 420 Heating Heating deformation 20 31 13 18 26 21 29 31 deformation ratio (%) test Evaluation symbol AA A AA AA AA AA AA A Evaluation of Extrusion appearance characteristics A A A A A A A A insulated wire Heating Heating deformation 29 36 23 22 28 31 24 37 deformation ratio (%) test Evaluation symbol AA A AA AA AA AA AA A

TABLE-US-00003 TABLE 3 Examples 17 18 19 20 21 22 23 24 Composition P Polyolefin- PE EVOLUE 15 15 15 15 15 15 15 based resin SP0540F UE320 EVA V5274 PP P8222A 5 5 5 5 5 5 5 20 EPDM NORDEL IP- 4760P NORDEL IP- 4520P SEPS SEPTON 30 30 30 30 30 30 30 30 4077 OIL DIANA 25 25 25 25 25 25 25 25 PROCESS PW-90 Silica Yi (m.sup.2/g) Aerosil 200 200 CRYSTALITE 12 5X Aerosil 90 90 1 Aerosil 50 0X50 SFP-20M 11.3 SFP-30M 6.2 Calcium Softon 1.2 carbonate 1200 Softon 2.2 60 2200 Magnesium MAGSEEDS 5 150 hydroxide X-6 MAGSEEDS 8 220 140 240 X-6F KISUMA 5L 5.8 140 Aluminum Higilite 5 100 hydroxide H42M Aluminum Boehmite 5 100 oxide Talc k-1 talc 7 Total blending amount of inorganic 150 220 280 100 100 240 1 60 filler (parts by mass) Silane KBM1003 10 4 3 6 6 15 6 6 coupling agent Organic PERHEXA 258 0.1 0.1 0.1 0.1 0.1 0.1 0.05 0.5 peroxide Antioxidizing IRGANOX 1010 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 agent Total (parts 235.2 299.2 358.2 181.2 181.2 330.2 82.15 141.6 by mass) Formula (I) A 750 1760 1932 500 500 1920 90 132 X 75 440 644 83.3 83.3 128 15 22 Composition Q PE UE320 25 25 25 25 25 25 25 25 Silanol ADKSTAB 0T-1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 condensation catalyst Antioxidizing IRGANOX 1010 1 1 1 1 1 1 1 1 agent Total (parts by mass) 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 Mixing ratio Composition Mixing amount 235.2 299.2 358.2 181.2 181.2 330.2 82.15 141.6 P (parts by mass) Composition Mixing amount 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 Q (parts by mass) Total 261.4 325.4 384.4 207.4 207.4 356.4 108.35 167.8 Evaluation Tensile Mpa 14.2 11.5 10.3 16.3 14.2 12.3 14.2 10.3 of sheet strength Elongation % 390 347 240 310 300 330 590 180 Heating Heating deformation 9 16 32 15 17 13 34 9 deformation ratio (%) test Evaluation symbol AA AA A AA AA AA A AA Evaluation of Extrusion appearance characteristics A A A A A A A B insulated wire Heating Heating deformation 16 26 37 25 26 21 45 12 deformation ratio (%) test Evaluation symbol AA AA A AA AA AA B AA

TABLE-US-00004 TABLE 4 Examples 25 26 27 28 29 30 31 32 33 Composition P Polyolefin- PE EVOLVE 10 10 10 15 15 15 55 55 35 based resin SP0540F UE320 20 EVA V5274 20 20 PP PB222A 10 5 5 5 20 20 20 EPDM NORDEL 25 25 25 25 IP- 4760P NORDEL 10 10 10 IP- 4520P SEPS SEPTON 30 30 4077 OIL DIANA 25 20 15 20 20 20 PROCESS PW-90 Silica Yi (m.sup.2/g) Aerosil 200 1 3 1 1 1 0.8 200 CRYSTALITE 12 5X Aerosil 90 90 Aerosil 50 0X50 SFP-20M 11.3 SFP-30M 6.2 Calcium Softon 1.2 carbonate 1200 Softon 2.2 60 2200 Magnesium MAGSEEDS 5 150 hydroxide X-6 MAGSEEDS 8 X-6F KISUMA 5L 5.8 120 100 100 Aluminum Higilite 5 80 hydroxide H42M Aluminum Boehmite 5 oxide Talc k-1 talc 7 Total blending amount of inorganic 150 1 3 61 121 81 0.8 100 100 filler (parts by mass) Silane KBM1003 10 6 6 6 6 6 3 5 6 coupling agent Organic PERHEXA 256 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 peroxide Antioxidizing IRGANOX 1010 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 agent Total 235.2 82.2 84.2 142.2 202.2 162.2 79 180.2 181.2 (parts by mass) Formula (I) A 750 200 600 332 896 600 160 580 580 X 75 33.3 100 55.3 149.3 100 53.3 116 96.7 Compostion Q PE UE320 25 25 25 25 25 25 25 25 25 Silanol ADKSTAB 0T-1 0.5 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 condensation catalyst Antioxidizing IRGANOX 1010 1 1 1 1 1 1 1 1 1 agent Total (parts by mass) 26.5 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 Mixing ratio Composition Mixing amount 235.2 82.2 84.2 142.2 202.2 162.2 79 180.2 181.2 P (parts by mass) Composition Mixing amount 26.5 26.2 26.2 26.2 26.2 26.2 26.2 26.2 26.2 Q (parts by mass) Total 261.7 108.4 110.4 168.4 228.4 188.4 105.2 206.4 207.4 Evaluation of Tensile Mpa 13.2 15.4 13.2 15.1 11.3 16.5 19.8 15.9 14.2 sheet strength Elongation % 300 442 391 529 375 320 380 323 240 Heating Heating deformation 11 19 11 9 14 10 7 9 10 deformation ratio (%) test Evaluation symbol AA AA AA AA AA AA AA AA AA Evaluation of Extrusion appearance characteristics A A A A A A A A A insulated wire Heating Heating deformation 19 26 21 16 21 21 13 11 12 deformation ratio (%) test Evaluation symbol AA AA AA AA AA AA AA AA AA

TABLE-US-00005 TABLE 5 Comparative Examples 1 2 3 4 5 6 Composition P Polyolefin- PE EVOLUE 15 15 15 15 15 15 based resin SP0540F UE320 EVA V5274 PP PB222A 5 5 5 5 5 5 EPDM NORDEL 25 IP- 4760P NORDEL 10 IP- 4520P SEPS SEPTON 30 30 30 30 30 4077 OIL DIANA 25 25 25 25 25 20 PROCESS PW-90 Silica Yi (m.sup.2/g) Aerosil 200 0.25 12 12 200 CRYSTALITE 12 5X Aerosil 90 90 Aerosil 50 0X50 SFP-20M 11.3 SFP-30M 6.2 Calcium Softon 1.2 30 carbonate 1200 Softon 2.2 100 2200 Magnesium MAGSEEDS 5 hydroxide X-6 MAGSEEDS 8 X-6F KISUMA 5L 5.8 330 200 Aluminum Higilite 5 hydroxide H42M Aluminum Boehmite 5 oxide Talc k-1 talc 7 Total blending amount of inorganic 0.25 112 330 200 30 12 filler (parts by mass) Silane KBM1003 11 2 2 1 8 2 coupling agent Organic PERHEXA 258 0.1 0.1 0.1 0.1 0.1 0.1 peroxide Antioxidizing IRGANOX 101 0.1 0.1 0.1 0.1 0.1 0.1 agent Total (parts 86.45 189.2 407.2 276.2 113.2 89.2 by mass) Formula (I) A 50 2620 1914 1160 36 2400 X 4.5 1310 957 1160 4.5 1200 Composition Q PE UE320 25 25 25 25 25 25 Silanol ADKSTAB 0T-1 0.2 0.2 0.2 0.2 0.2 0.2 condensation catalyst Antioxidizing IRGANOX 1010 1 1 1 1 1 1 agent Total (parts by mass) 26.2 26.2 26.2 26.2 26.2 26.2 Mixing ratio Composition Mixing amount 86.45 189.2 407.2 276.2 113.2 89.2 P (parts by mass) Composition Mixing amount 26.2 26.2 26.2 26.2 26.2 26.2 Q (parts by mass) Total 112.65 215.4 433.4 302.4 139.4 115.4 Evaluation Tensile Mpa 9.7 7.2 8.3 11.1 14.2 18.1 of sheet strength Elongation % 330 240 100 273 300 313 Heating Heating deformation 44 72 64 79 42 48 deformation ratio (%) test Evaluation symbol C C C C C C (foramed) Evaluation of Extrusion appearance characteristics C C A A C A insulated Heating Heating deformation 52 78 83 74 58 62 wire deformation ratio (%) test Evaluation symbol C C C C C C (foramed)

[0241] The following is found from the results in Table 1 to Table 5.

[0242] According to all of Examples 1 to 33, the sheet composed of the crosslinked resin molded body and having a combination of excellent appearance, mechanical characteristics, and heat resistance, and the insulated wire having the coating composed of this crosslinked resin molded body could be produced. Moreover, in a case where the inorganic filler and the silane coupling agent were simultaneously used in such a manner that the X value specified by Formula (1) falls within the above-described preferable range, the heat resistance could be further improved without adversely affecting all of the appearance and the mechanical characteristics of the crosslinked resin molded body. Further, according to Examples 1 to 33, the crosslinkable resin composition and the silane master batch each having a capability of producing the crosslinked resin molded body having the combination of the excellent appearance, mechanical characteristics, and heat resistance could be prepared.

[0243] In contrast, in Comparative Examples 1 and 5 in which the X value specified by Formula (I) was too small, at least the heating deformation test and the extrusion appearance characteristics were deemed to be not passable. Further, in Comparative Examples 2, 4 and 6 in which the X value specified by Formula (I) was too large, at least the heating deformation test was deemed to be not passable. Further, in Comparative Example 3 in which the blending amount of the inorganic filler was too large, the mechanical characteristics and the heating deformation test were deemed to be not passable.

[0244] Having described our invention as related to the present embodiments, it is our intention that the invention not be limited by any of the details of the description, unless otherwise specified, but rather be construed broadly within its spirit and scope as set out in the accompanying claims.