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Preparation of weather resistant PC and ASA copolymer alloy

A technology of copolymers and alloys is applied in the formulation and preparation of weather-resistant PC and ASA copolymer alloys. It can solve the problems of rapid yellowing of PC/ABS alloys and unfavorable long-term use. Good weather resistance

Inactive Publication Date: 2009-07-22
深圳市比克新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unsaturated double bonds contained in ABS, the PC / ABS alloy produced is susceptible to rapid yellowing by ultraviolet rays in sunlight, which is not conducive to long-term use in environments with higher weather resistance requirements such as outdoors or under light conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The formula is as follows:

[0012] (a) PC 201-15 35 copies

[0013] (b) ASA Luran S 778T 57 parts

[0014] (c) 3 copies of SMA

[0015] (d) KT-15 5 copies

[0016] (e) Antioxidant 1010 0.1 parts

[0017] (f) Antioxidant 168 0.2 parts

[0018] (g) E wax 0.5 parts

[0019] (h) Songsorb 3600 0.2 parts

[0020] (i) UV327 0.3 parts

[0021] According to the formula in Example 1, after stirring evenly with a high-speed mixer, add it to the twin-screw extruder. The processing temperature conditions of the twin-screw extruder are as follows: the temperature in the first zone is 220°C, the temperature in the second zone is 230°C, and the temperature in the third zone is 240°C. ℃, the temperature in the fourth zone is 240 ℃, the temperature in the fifth zone is 230 ℃, the temperature in the sixth zone is 230 ℃, the temperature in the seventh zone is 230 ℃, the temperature in the eighth zone is 230 ℃, the temperature is 220-240 degrees, the main engine speed is 200-300 rpm...

Embodiment 2

[0025] The formula is as follows:

[0026] (a) PC 201-15 35 copies

[0027] (b) ASA Luran S 778T 57 parts

[0028] (c) 3 copies of SMA

[0029] (d) Lotader 4700 5 copies

[0030] (e) Antioxidant 1010 0.1 part

[0031] (f) Antioxidant 168 0.2 parts

[0032] (g) E wax 0.5 parts

[0033] (h) Songsorb 3600 0.2 parts

[0034] (i) UV327 0.3 parts

[0035] According to the formula in Example 2, after being evenly stirred by a high-speed agitator, it is added to the twin-screw extruder. The processing temperature conditions of the twin-screw extruder are as follows: the temperature of the first zone is 220°C, the temperature of the second zone is 230°C, and the temperature of the third zone is 240°C. ℃, the temperature in the fourth zone is 240 ℃, the temperature in the fifth zone is 230 ℃, the temperature in the sixth zone is 230 ℃, the temperature in the seventh zone is 230 ℃, the temperature in the eighth zone is 230 ℃, the temperature is 220-240 degrees, the main engine spe...

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PUM

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Abstract

A method for preparing weather resistance polycarbonate / acrylonitrile-styrene-acrylic ester copolymer alloy (PC / ASA alloy) is to prepare the PC / ASA alloy by adopting PC resin, ASA resin, SMA resin, E-EA-MAH, antioxidizer, lubricant, antiultraviolet absorbent and the like which are treated with blending and extrusion in a double screw extruder. The manufactured PC / ASA alloy has greatly increased weather resistance, high impact strength, good fluidity, good heat resistance, excellent comprehensive performance, with the poor weather resistance of original PC / ABS being improved, and the PC / ABS alloy is applicable to the places with higher requirement on weather resistance.

Description

[0001] The invention relates to the field of thermoplastic resin compositions in polymer material technology, in particular to the formulation and preparation method of a weather-resistant PC and ASA copolymer alloy. technical background: [0002] PC / ABS is an alloy with good mechanical strength, good impact strength, good fluidity and good heat resistance. It reduces the viscosity of PC, has better processing type, and reduces the gap of PC. Sensitive, improves the stress cracking resistance of PC. However, due to the unsaturated double bonds contained in ABS, the PC / ABS alloy produced is susceptible to rapid yellowing by ultraviolet rays in sunlight, which is not conducive to long-term use in environments with higher weather resistance requirements such as outdoors or under light conditions. . Based on this, we have developed a weather-resistant PC / ASA alloy. ASA is a terpolymer of acrylonitrile, styrene and acrylate. Its structure is similar to that of ABS, and it has exce...

Claims

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Application Information

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IPC IPC(8): C08L51/04C08L69/00C08K5/00C08L25/08C08L33/08
Inventor (请求不公开姓名)
Owner 深圳市比克新材科技有限公司
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