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Glass fiber reinforced PC/ABS alloy with high gloss, permanent antistatic property and high dimensional stability and preparation method thereof

A dimensional stability and antistatic technology, which is applied in the field of glass fiber reinforced PC/ABS alloy and its preparation, can solve the problems that the improvement of dimensional stability is not helpful, the influence of material strength and heat resistance, and the improvement effect are limited, so as to reduce the Mold shrinkage, good stability, and the effect of avoiding warping problems

Active Publication Date: 2019-03-15
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent document CN106433075A (application number 201610943989.9) discloses a high-gloss and low-warpage polycarbonate reinforced flame-retardant material. The patent adds silicone as an auxiliary agent for improving floating fibers. Silicone materials are conventional floating fibers exposed Improver, but for very viscous materials such as polycarbonate, the improvement effect is very limited
However, it only explains the improvement of the floating fiber of PP material, and does not explain the antistatic property
[0006] Chinese patent document CN101899204B (application number 201010118476.7) discloses an antistatic PC / ASA alloy material and its remark method. Heat has a big effect and doesn't help with the improvement in dimensional stability

Method used

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  • Glass fiber reinforced PC/ABS alloy with high gloss, permanent antistatic property and high dimensional stability and preparation method thereof
  • Glass fiber reinforced PC/ABS alloy with high gloss, permanent antistatic property and high dimensional stability and preparation method thereof
  • Glass fiber reinforced PC/ABS alloy with high gloss, permanent antistatic property and high dimensional stability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0069] Components and proportioning of table 2 embodiment 1-5

[0070]

[0071] Preparation:

[0072] S1. Prepare the raw materials according to the weight ratios in Table 1 and Table 2, put them into the premixer to mix the raw materials evenly, and heat them to 60°C and keep them warm for 15 minutes to obtain the premix;

[0073] S2. Add the premixed material obtained in step S1 into a twin-screw extruder, extrude and pelletize to obtain a PC / ABS composite material, wherein the barrel speed of the twin-screw extruder is 15-35rpm, and the barrel temperature is 220 -270°C;

[0074] S3. The PC / ABS composite material prepared in step S2 is injected into a finished product. The injection molding temperature is 220-270°C, and the mold temperature is 60-100°C.

Embodiment 6

[0075] Embodiment 6: Evaluation of implementation effect

[0076] With the sample that above-mentioned comparative example 1-6 and embodiment 1-5 obtain, product performance test method is as follows:

[0077] Melt index: according to ISO 1133, tested under 5kg load at 260°C;

[0078] Bending strength: According to DIN EN ISO 178, the test speed is 2mm / min;

[0079] Notched impact strength: according to DIN EN ISO 179-1, temperature 23°C;

[0080] Linear expansion coefficient: According to GB / T 1036, the test temperature is -30℃~80℃, and the heating rate is 10℃ / min;

[0081] Mold shrinkage rate: ASTM D955, the size of the test sample is 100*150*3mm, after injection molding, the sample needs to be kept at 23°C and 50% RH for 24 hours, and then the size test is carried out;

[0082] Antistatic performance: According to PV3977, apply a voltage of 70KV to the material for 15s; then test the residual voltage of the sample after 120s;

[0083] Gloss: According to ASTM D2457, rea...

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Abstract

The invention relates to the field of polymer materials, in particular to a glass fiber reinforced PC / ABS alloy with high gloss, permanent antistatic property and high dimensional stability. The alloyis prepared from the following components in parts by weight: 30 to 60 parts of high strength PC resin, 5 to 20 parts of ultra-high flow permanent antistatic PC masterbatch, 20 to 40 parts of ABS resin, 2 to 5 parts of a toughening agent, 5 to 30 parts of a glass fiber, 0.1 to 1 part of a lubricant and 0. 1 to 1 part of an antioxidant. The problem of fibers floating on the surface of the glass fiber reinforced PC / ABS material is solved, so that the glass fiber reinforced PC / ABS can be used as a high-gloss component without painting on the surface; furthermore, the problem of warping deformation caused in low and high temperature tests as a conventional glass fiber has a relatively large length-to-diameter ratio is solved; and meanwhile, the system further has an extremely high permanent antistatic property, so that use of the PC / ABS as an automobile interior trim is further extended, and the comprehensive cost is reduced.

Description

technical field [0001] The invention relates to the field of polymer materials, specifically, a glass fiber-reinforced PC / ABS alloy with high gloss, permanent antistatic properties and good dimensional stability, which is suitable for high-gloss parts such as automobile central control panels or decorative strips, and its Preparation. Background technique [0002] Polycarbonate (PC) is a linear polycarbonate, an amorphous engineering plastic with good toughness, transparency and heat resistance. ABS has good fluidity and impact performance. Therefore, the blending of PC and ABS can combine the excellent properties of both PC and ABS, which can not only improve the heat resistance and tensile strength of ABS, but also reduce the melt viscosity of PC, improve processing performance, and reduce the risk of stress cracking. sensitivity and can reduce costs. So PC / ABS is often used as a car interior material. However, considering some requirements of light weight and environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08K7/14C08J3/22
CPCC08J3/226C08J2369/00C08J2455/02C08J2469/00C08K7/14
Inventor 张毅赵志刚程方清岳同健朱爱华胡同云蒲伟张龙
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC
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