POLYPROPYLENE-POLYPHENYLENE ETHER-POLYSTYRENE TERNARY ALLOY AND PREPARATION METHOD AND USE THEREOF

Abstract

The present invention provides a polypropylene-polyphenylene ether-polystyrene ternary alloy, including the following components in parts by weight: 100 parts of a polypropylene and a polyphenylene ether and a polystyrene, wherein the polypropylene accounts for 10% to 60%, the polyphenylene ether accounts for 10% to 60%, and the polystyrene accounts for 5% to 30%; 5 parts to 25 parts of a compatibilizer; and 10 parts to 60 parts of a polyphosphate compound. The polypropylene-polyphenylene ether-polystyrene ternary alloy of the present invention has an advantage of a less smoke release amount during melt.

Claims

1. A polypropylene-polyphenylene ether-polystyrene ternary alloy, comprising the following components in parts by weight: 100 parts of a polypropylene and a polyphenylene ether and a polystyrene, wherein the polypropylene accounts for 10% to 60%, the polyphenylene ether accounts for 10% to 60%, and the polystyrene accounts for 5% to 30%; 5 parts to 25 parts of a compatibilizer; and 10 parts to 60 parts of a polyphosphate compound.

2. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 1, comprising the following components in parts by weight: 100 parts of the polypropylene and the polyphenylene ether and the polystyrene, wherein the polypropylene accounts for 10% to 60%, the polyphenylene ether accounts for 10% to 60%, and the polystyrene accounts for 5% to 30%; 8 parts to 18 parts of the compatibilizer; and 20 parts to 50 parts of the polyphosphate compound.

3. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 1, wherein the compatibilizer is selected from a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene.

4. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 3, wherein the hydrogenated block copolymer of the alkenyl aromatic compound and the conjugated diene is an A-B-A type triblock copolymer; the A block is a polymer of a vinyl aromatic compound; the B block is a hydrogenated polymer of a conjugated diene compound.

5. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 4, wherein the vinyl aromatic compound is selected from at least one of styrene, alkyl styrene, ethyl vinyl benzene, and divinyl benzene; the conjugated diene compound is selected from at least one of butadiene and isoprene.

6. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 1, wherein the polyphosphate compound is selected from at least one of ammonium polyphosphate, melamine phosphate, melamine pyrophosphate, and melamine polyphosphate.

7. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 1, further comprising 0 parts to 100 parts of a reinforcing fiber in parts by weight; the reinforcing fiber is selected from at least one of glass fiber, carbon fiber, metal fiber, and whisker.

8. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 1, further comprising 0 parts to 10 parts of an auxiliary agent in parts by weight; the auxiliary agent is selected from at least one of an antioxidant, a coupling agent, a lubricant, a weather-resistant agent, and a colorant.

9. A preparation method of the polypropylene-polyphenylene ether-polystyrene ternary alloy of claim 7, wherein the method comprises the following steps: adding the polypropylene, the polyphenylene ether, the polystyrene, the compatibilizer, and the polyphosphate compound according to a ratio into a high-speed mixer and mixing evenly to form a mixture, then putting the mixture into a twin-screw extruder, side feeding the reinforcing fiber, granulating by extrusion to obtain the polypropylene-polyphenylene ether-polystyrene ternary alloy, a temperature in each section of the screw is 180° C. to 195° C. in Section One, and 200° C. to 240° C. in Section Two to Section Nine.

10. Use of a polyphosphate compound in reducing a smoke release amount during melt of a polypropylene-polyphenylene ether-polystyrene ternary alloy, wherein there are 100 parts of the polypropylene and the polyphenylene ether and the polystyrene, and 10 parts to 60 parts of the polyphosphate compound.

11. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 2, wherein the compatibilizer is selected from a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene.

12. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 11, wherein the hydrogenated block copolymer of the alkenyl aromatic compound and the conjugated diene is an A-B-A type triblock copolymer; the A block is a polymer of a vinyl aromatic compound; the B block is a hydrogenated polymer of a conjugated diene compound.

13. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 12, wherein the vinyl aromatic compound is selected from at least one of styrene, alkyl styrene, ethyl vinyl benzene, and divinyl benzene; the conjugated diene compound is selected from at least one of butadiene and isoprene.

14. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 2, wherein the polyphosphate compound is selected from at least one of ammonium polyphosphate, melamine phosphate, melamine pyrophosphate, and melamine polyphosphate.

15. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 6, wherein the polyphosphate compound is selected from ammonium polyphosphate.

16. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 14, wherein the polyphosphate compound is selected from ammonium polyphosphate.

17. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 2, further comprising 0 parts to 100 parts of a reinforcing fiber in parts by weight; the reinforcing fiber is selected from at least one of glass fiber, carbon fiber, metal fiber, and whisker.

18. The polypropylene-polyphenylene ether-polystyrene ternary alloy according to claim 2, further comprising 0 parts to 10 parts of an auxiliary agent in parts by weight; the auxiliary agent is selected from at least one of an antioxidant, a coupling agent, a lubricant, a weather-resistant agent, and a colorant.

19. A preparation method of the polypropylene-polyphenylene ether-polystyrene ternary alloy of claim 17, wherein the method comprising the following steps: adding the polypropylene, the polyphenylene ether, the polystyrene, the compatibilizer, and the polyphosphate compound according to a ratio into a high-speed mixer and mixing evenly to form a mixture, then putting the mixture into a twin-screw extruder, side feeding the reinforcing fiber, granulating by extrusion to obtain the polypropylene-polyphenylene ether-polystyrene ternary alloy, a temperature in each section of the screw is 180° C. to 195° C. in Section One, and 200° C. to 240° C. in Section Two to Section Nine.

Description

DESCRIPTION OF THE EMBODIMENTS

[0043] The present invention will be further illustrated by specific implementations below. The following embodiments are preferred implementations of the present invention, but the implementations of the present invention are not limited by the following embodiments.

[0044] A preparation method of a ternary alloy in Embodiments and Comparative examples is that: a polypropylene, a polyphenylene ether, a polystyrene, a compatibilizer, a polyphosphate compound, and an auxiliary agent were added according to a ratio in a high-speed mixer and mixed evenly to form a mixture, and then the mixture was put into a twin-screw extruder, a reinforcing fiber was side fed, and the mixture was granulated by extrusion to obtain a polypropylene-polyphenylene ether-polystyrene ternary alloy, a temperature in each section of the screw was 180° C. to 195° C. in Section One, and 200° C. to 240° C. in Section Two to Section Nine.

[0045] Raw materials as follows are used in the Embodiments and the Comparative examples, but do not limit the present invention.

[0046] Compatibilizer: a polystyrene-hydrogenated polyisoprene-polystyrene block copolymer, with a hydrogenation degree of ≥90%.

[0047] Lubricant: a silicone lubricant.

[0048] Each performance test method.

[0049] (1) Smoke release amount during melt of alloy: melt injection-molding at 240° C. was carried out, the smoke release amount at an injection nozzle was visually measured and scored on a scale of 1 to 10, the higher the score was, the more the smoke release amount was.

TABLE-US-00001 TABLE 1 Ratios (parts by weight) of each component in Embodiments and Comparative Examples and each performance test results Embodiment Embodiment Embodiment Embodiment Embodiment Embodiment Embodiment Comparative Comparative 1 2 3 4 5 6 7 Example 1 Example 2 PP 30 30 30 30 30 30 30 30 30 PPE 60 60 60 60 60 60 60 60 60 PS 10 10 10 10 10 10 10 10 10 Compatibilizer 10 10 10 10 10 10 10 10 10 Ammonium 10 15 20 50 60 — — — — polyphosphate Melamine — — — — — 15 — — — phosphate-e Melamine — — — — — — 15 — — polyphosphate Hexaphenoxy- — — — — — — — — 50 cyclotriphosphazene Glass fiber 30 30 30 30 30 30 30 30 30 Lubricant 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Antioxidant 168 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Smoke release 6 4 3 1 1 5 5 10 9 amount during melt of alloy

[0050] It can be seen from Embodiments 1 to 5 that adding 10 parts of ammonium polyphosphate can make an effect of effectively reducing the smoke release amount during melt. As a dosage of ammonium polyphosphate increases, smoke release during melt will be better inhibited. When the dosage of ammonium polyphosphate reaches 20 parts, the smoke release amount during melt has already been very small, after the dosage is continued to increase to 50 parts, inhibition of the smoke release has reached the strongest, and even if the dosage of ammonium polyphosphate is further continued to increase, an effect of inhibiting the smoke release will no longer be increased, and instead a cost will be increased or other performances will be influenced.

[0051] It can be seen from Embodiment 2 or 6 or 7 that ammonium polyphosphate is better than melamine phosphate and melamine polyphosphate in inhibiting a rate of smoke release during melt.

[0052] It can be seen from Comparative Example 2 that hexaphenoxycyclotriphosphazene is a very good flame retardant, but when its dosage is 50 parts, it cannot effectively inhibit the smoke release during melt.