PVC rigid substrate, preparation method thereof and PVC rigid composite plate

Abstract

A PVC rigid substrate, a preparation method therefor and a PVC rigid composite plate, wherein the PVC rigid substrate comprises the following raw materials in parts by weight: 40-50 parts of PVC, 75-150 parts of calcium carbonate, 0.6-1.0 parts of balance lubricant, 3.0-5.0 parts of stabilizer and 10-20 parts of CPVC. The PVC substrate has a high hardness, a very small heating size change rate which can be less than or equal to 0.05%. The impact resistance and toughness of a product may be greatly improved to facilitate the treatments that follow. Second, the PVC rigid composite plate has a high mechanical strength and a long service life; at the same time, the PVC rigid substrate can be prepared by using an extrusion method, which is very simple and easy to implement.

Claims

1. A PVC rigid substrate, wherein the PVC rigid substrate comprises the following raw materials in parts by weight: 45 parts of PVC, 90 parts of calcium carbonate, 0.6 parts of internal lubricant (G60), 0.2 parts of external lubricant (PE wax), 4.0 parts of calcium-zinc composite stabilizer (CZ96), 15 parts of CPVC, 5 parts of ABS, 0.2 parts of OPE and 5 parts of MBS.

2. A preparation method of the PVC rigid substrate according to claim 1, wherein the preparation method comprises the following steps: the raw materials are high-speed mixed to 120° C., and cold-mixed to 40° C. and then discharged into a silo; the material in the silo is sent into an extruder to be extruded and plasticized, and molded by a mold; after passing through three rollers, the molded material is naturally cooled and cut to obtain a PVC rigid substrate.

3. The preparation method of the PVC rigid substrate according to claim 2, wherein the three rolls comprise a corrugating roller, an embossing roller and a mirror roller connected in sequence.

Description

DETAILED DESCRIPTION

(1) The technical solution of the present invention is further described below in conjunction with the following examples.

Example 1: Preparation of a PVC Substrate

(2) Raw materials (parts by weight, the same below): 40 parts of PVC, 75 parts of calcium carbonate, 0.5 parts of internal lubricant (G60), 0.1 parts of external lubricant (PE wax), 3.0 parts of calcium-zinc composite stabilizer (LY21) and 10 parts of CPVC.

(3) Wherein, the PVC was purchased from Hwasu Corporation in Anhui Province, the calcium carbonate was purchased from Xingchen Corporation in Zhenjiang City, the G60 was purchased from Zibo Linzi Dinghao Chemicals Co., Ltd. in Shandong Province, the PE wax was purchased from BASF, the LY21 was purchased from Honeywell, USA, and the CPVC was purchased from Gaoxin Chemicals Co., Ltd. in Shandong Province.

(4) Preparation method: the raw materials according to the above formula were high-speed mixed to 120° C., and cold-mixed to 40° C. and then discharged into a silo; the mixed material in the silo was sent into an extruder to be extruded and plasticized, and molded by a mold; after passing through three rollers, the molded material was naturally cooled and cut to obtain a substrate. A wear layer and a color film were sequentially attached to the surface of the substrate, and hot pressed with a hot press to obtain a rigid PVC substrate; the surface of the rigid PVC substrate may be sequentially subjected to UV treatment and hot-water heat treatment, and then die-cut, slotted to obtain a product.

Example 2: Preparation of a PVC Substrate

(5) Raw materials: 50 parts of PVC, 150 parts of calcium carbonate, 0.7 parts of internal lubricant (3316A), 0.3 parts of external lubricant (1801), 5.0 parts of calcium-zinc composite stabilizer (YQ102), 20 parts of CPVC and 10 parts of ABS.

(6) Wherein, the YQ102 was purchased from Honeywell, USA, and the ABS was purchased from Taiwan Chimei Corporation, and the other raw material sources were the same as those in Example 1.

(7) Preparation method: the raw materials according to the above formula were high-speed mixed to 125° C., and cold-mixed to 45° C. and then discharged into a silo; the mixed material in the silo was sent into an extruder to be extruded and plasticized, and molded by a mold; after passing through three rollers, the molded material was naturally cooled and cut to obtain a substrate. A wear layer and a color film were sequentially attached to the surface of the substrate, and hot pressed with a hot press to obtain a rigid PVC substrate; the surface of the rigid PVC substrate may be sequentially subjected to UV treatment and hot-water heat treatment, and then die-cut, slotted to obtain a product.

Example 3: Preparation of a PVC Substrate

(8) Raw materials: 45 parts of PVC, 90 parts of calcium carbonate, 0.6 parts of internal lubricant (G60), 0.2 parts of external lubricant (PE wax), 4.0 parts of calcium-zinc composite stabilizer (CZ96), 15 parts of CPVC, 5 parts of ABS and 0.2 parts of OPE.

(9) Wherein, the CZ96 was purchased from Honeywell, USA, the OPE was purchased from BASF, and the other raw material sources were the same as those in Example 1.

(10) Preparation method: the raw materials according to the above formula were high-speed mixed to 122° C., and cold-mixed to 42° C. and then discharged into a silo; the mixed material in the silo was sent into an extruder to be extruded and plasticized, and molded by a mold; after passing through three rollers, the molded material was naturally cooled and cut to obtain a substrate. A wear layer and a color film were sequentially attached to the surface of the substrate, and hot pressed with a hot press to obtain a rigid PVC substrate; the surface of the rigid PVC substrate may be sequentially subjected to UV treatment and hot-water heat treatment, and then die-cut, slotted to obtain a product.

(11) TABLE-US-00001 TABLE 1 Performance comparison of PVC substrates prepared in Examples 1-3 Tensile strength Length change Perfor- of tongue-and- rate after Thermal Residual mance groove lap, heating, warping, indentation, indexs N/cm % mm mm Example 1 32 0.09 0.85 0.09 Example 2 70 0.008 0.55 0.02 Example 3 40 0.050 0.70 0.06

Example 4

(12) Raw materials: 40 parts of PVC, 75 parts of calcium carbonate, 0.5 parts of internal lubricant (G60), 0.1 parts of external lubricant (PE wax), 3.0 parts of calcium-zinc composite stabilizer (LY21) and several parts of CPVC.

(13) Eight sets of parallel tests were designed, in which the content of CPVC was 5, 10, 12, 14, 16, 18, 20 and 25 parts, respectively.

(14) The preparation method was the same as that in Example 1.

(15) TABLE-US-00002 TABLE 2 Performance comparison of substrates prepared with different contents of CPVC resin Serial numbers 1 2 3 4 5 6 7 8 CPVC, parts by 5 10 12 14 16 18 20 25 weight Tensile strength of 27 32 35 39 43 53 65 62 tongue-and-groove lap, N/cm Length change 0.060 0.050 0.040 0.030 0.025 0.020 0.010 0.010 rate after heating, % Thermal warping, 1.10 0.65 0.30 0.35 0.45 0.75 0.60 0.63 mm Residual 0.10 0.09 0.08 0.07 0.05 0.03 0.01 0.01 indentation, mm

(16) It can be seen from Table 2 that with the increase of the content of CPVC resin, the performance curve of the substrate showed a trend of: first rising and then slightly decreasing. This was because the higher the added amount of CPVC, the greater the intermolecular forces and the friction between molecular chains. The greater the equilibrium torque of the solution, the greater the hardness and strength of the product, and the shrinkage rate of the product became smaller.

Example 5

(17) Raw materials: 50 parts of PVC, 150 parts of calcium carbonate, 0.7 parts of internal lubricant (3316A), 0.3 parts of external lubricant (1801), 5.0 parts of calcium-zinc composite stabilizer (YQ102), 20 parts of CPVC and several parts of ABS.

(18) Eight sets of parallel tests were designed, in which the content of ABS was 2, 5, 6, 7, 8, 9, 10 and 14 parts, respectively.

(19) The preparation method was the same as that in Example 1.

(20) TABLE-US-00003 TABLE 3 Performance comparison of substrates prepared with different contents of ABS Serial numbers 1 2 3 4 5 6 7 8 ABS, parts by 2 5 6 7 8 9 10 14 weight Tensile strength of 30 35 45 55 60 68 70 68 tongue-and-groove lap, N/cm Length change 0.058 0.045 0.035 0.030 0.020 0.010 0.008 0.010 rate after heating, % Thermal warping, 0.90 0.50 0.45 0.35 0.40 0.45 0.55 0.60 mm Residual 0.09 0.08 0.07 0.07 0.06 0.04 0.02 0.01 indentation, mm

Example 6

(21) Raw materials: 45 parts of PVC, 90 parts of calcium carbonate, 0.6 parts of internal lubricant (G60), 0.2 parts of external lubricant (PE wax), 4.0 parts of calcium-zinc composite stabilizer (CZ96), 15 parts of CPVC, 5 parts of ABS and several parts of OPE.

(22) Eight sets of parallel tests were designed, in which the content of OPE was 0.1, 0.2, 0.3, 0.35, 0.4, 0.5, 0.6 and 0.8 parts, respectively.

(23) The preparation method was the same as that in Example 1.

(24) TABLE-US-00004 TABLE 4 Performance comparison of substrates prepared with different contents of OPE as raw material Serial numbers 1 2 3 4 5 6 7 8 OPE, parts by 0.1 0.2 0.3 0.35 0.4 0.5 0.6 0.8 weight Tensile strength of 35 40 50 55 65 70 72 70 tongue-and-groove lap, N/cm Length change 0.056 0.050 0.045 0.020 0.010 0.006 0.004 0.010 rate after heating, % Thermal warping, 0.90 0.70 0.35 0.30 0.40 0.40 0.45 0.50 mm Residual 0.09 0.06 0.05 0.05 0.04 0.03 0.01 0.01 indentation, mm

Example 7

(25) Raw materials: 45 parts of PVC, 90 parts of calcium carbonate, 0.6 parts of internal lubricant (G60), 0.2 parts of external lubricant (PE wax), 4.0 parts of calcium-zinc composite stabilizer (CZ96), 15 parts of CPVC, 5 parts of ABS, 0.2 parts of OPE and several parts of MBS.

(26) Eight sets of parallel tests were designed, in which the content of MBS was 1, 2, 2.5, 3, 3.5, 4, 5 and 7 parts, respectively.

(27) The preparation method was the same as that in Example 1.

(28) TABLE-US-00005 TABLE 5 Performance comparison of substrates prepared with different contents of OPE as raw material Serial numbers 1 2 3 4 5 6 7 8 MBS, parts by 1 2 2.5 3 3.5 4 5 7 weight Tensile strength of 35 50 60 65 80 85 90 85 tongue-and-groove lap, N/cm Length change 0.056 0.040 0.030 0.010 0.005 0.005 0.004 0.005 rate after heating, % Thermal warping, 0.90 0.60 0.30 0.20 0.30 0.35 0.20 0.25 mm Residual 0.09 0.05 0.04 0.03 0.03 0.02 0.01 0.01 indentation, mm