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A kind of high weather resistance glass fiber reinforced PC material and preparation method thereof

A technology of glass fiber and chopped glass fiber, which is applied in the field of weather-resistant glass fiber-reinforced PC materials and its preparation, can solve the problems of high material cost, high price, cumbersome process, etc., achieve great economic value and social value, and improve weather resistance Persistence, the effect of extending the range of application

Active Publication Date: 2016-12-07
上海昶勤实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, carbon black as an ultraviolet shielding agent can improve the weather resistance of the material very well, but it must be added in sufficient amount. Most of the obtained products are black products, which have a large limitation on the appearance and color of the parts, and cannot meet the market's demand for light-colored appearance. design needs
However, by adding a large amount of anti-UV additives to improve the weather resistance of the material, the light-colored products obtained can better improve the retention rate of the mechanical properties of the material after aging, but it is difficult to improve the aging discoloration of the product, and it is difficult to inhibit the aging of the product. The hindered amine light stabilizers with better yellowing effect of materials are mostly alkaline, which will promote the degradation of PC. It is difficult to apply to PC material system, which also increases the difficulty of this problem, and the anti-UV additives are expensive, and the cost of materials is high, so it is difficult to accepted by the market
Coating process, the process is cumbersome, and the price is also high
Therefore, there is a lack of some weather-resistant solutions for light-colored glass fiber reinforced polycarbonate materials on the market

Method used

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  • A kind of high weather resistance glass fiber reinforced PC material and preparation method thereof
  • A kind of high weather resistance glass fiber reinforced PC material and preparation method thereof
  • A kind of high weather resistance glass fiber reinforced PC material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Take by weighing PC, toughening agent, nano-titanium dioxide, antioxidant, light stabilizer, lubricant according to the composition ratio in Table 1, add to the high mixer and mix at a high speed, control the high mixer speed to be 500rmp, and the mixing temperature at 80°C, mix for 3 minutes and mix well;

[0029] (2) Put the mixed material and glass fiber into the twin-screw extruder to extrude and granulate. ℃, the extruder strands can be cut into pellets to obtain glass fiber reinforced PC materials.

[0030] The above product was dried at 85° C. for 5 hours in a blast oven and then injection molded with an injection molding machine, and the injection molding temperature was 275° C. The extruded strips were placed at 50% relative humidity at 23°C for 24 hours before performance testing. The test results are shown in Table 1.

Embodiment 2

[0032] (1) Take by weighing PC, toughening agent, nano-titanium dioxide, antioxidant, light stabilizer, lubricant according to the composition ratio in Table 1, add to the high-speed mixer and mix at a high speed, control the high-mixer speed to be 700rmp, and the mixing temperature at 40°C, mix for 6 minutes and mix well;

[0033] (2) Put the mixed material and glass fiber into the twin-screw extruder to extrude and granulate, and control the temperature of each zone (from the feed port to the die head of the extruder) to be 230°C, 240°C, 255°C, 270°C, 260°C ℃, the extruder strands can be cut into pellets to obtain glass fiber reinforced PC materials.

[0034] The above product was dried at 85° C. for 5 hours in a blast oven and then injection molded with an injection molding machine, and the injection molding temperature was 275° C. The extruded strips were placed at 50% relative humidity at 23°C for 24 hours before performance testing. The test results are shown in Table ...

Embodiment 3-4

[0036] (1) Take by weighing PC, toughening agent, nano-titanium dioxide, antioxidant, light stabilizer, lubricant according to the composition ratio in Table 1, add to the high-speed mixer and mix evenly, control the high-mixer speed to be 600rmp, and the mixing temperature at 60°C, mix for 10 minutes and mix well;

[0037] (2) Put the mixed material and glass fiber into the twin-screw extruder to extrude and granulate, and control the temperature of each zone (from the feed port to the die head of the extruder) to 220°C, 235°C, 250°C, 265°C, 260°C ℃, the extruder strands can be cut into pellets to obtain glass fiber reinforced PC materials.

[0038] The above product was dried at 85° C. for 5 hours in a blast oven and then injection molded with an injection molding machine, and the injection molding temperature was 275° C. The extruded strips were placed at 50% relative humidity at 23°C for 24 hours before performance testing. The test results are shown in Table 1.

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Abstract

The invention belongs to the technical field of high polymer materials, and relates to a high-weather-resistant glass fiber reinforced PC material and a preparation method thereof. The glass fiber reinforced PC material is prepared from the following components in parts by weight: 100 parts of PC resin, 15 to 50 parts of glass fiber, 5 to 15 parts of a toughening agent, 0.3 to 1.5 parts of nano titanium dioxide, 0.2-1.0 part of a light stabilizer, 0.4 to 1.0 part of a lubricant, and 0.4 to 1.2 parts of an antioxidant. The glass fiber reinforced PC material provided by the invention has excellent lasting weather resistance, the color stability of light colored products can be ensured for a long term, and the color difference after photoaging is obviously reduced. The glass fiber reinforced PC material can be widely applied to various fields of social life such as home appliance shells, packaging materials, pipelines, building profiles and boards, and has great economic and social values.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a weather-resistant glass fiber reinforced PC material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is widely used in various fields of social life such as electronic appliances, building materials, packaging, and automobile industry because of its excellent physical and mechanical properties, high impact strength, good electrical properties, and good dimensional stability. One of the polymers with the largest output and widest application at present. Glass fiber reinforced polycarbonate materials can greatly improve the mechanical properties of polycarbonate materials, reduce the thermal expansion coefficient of materials, improve their stress cracking performance, and improve fatigue resistance. They can be used to replace aluminum, zinc and other materials for electrical, instrumentation, Manufacture of various components in indus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K13/04C08K7/14C08K3/22B29B9/06
CPCC08K2201/003C08K2201/011C08L69/00C08L2201/08C08L2203/18C08L2203/20C08L2205/03C08L51/04C08L23/06C08K13/04C08K7/14C08K2003/2237C08K5/103C08L23/0884C08L51/06C08L83/04
Inventor 杨桂生赵敏
Owner 上海昶勤实业有限公司
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