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1 相關(guān)概念

PC/ABS，聚碳酸酯和丙烯腈-丁二烯-苯乙烯共聚物和混合物，是由聚碳酸酯（Polycarbonate）和聚丙烯腈（ABS）合金而成的熱可塑性塑膠，結(jié)合了兩種材料的優(yōu)異特性，ABS材料的成型性和PC的機(jī)械性、沖擊強(qiáng)度和耐溫、抗紫外線（UV）等性質(zhì)，可廣泛使用在汽車(chē)內(nèi)部零件、商務(wù)機(jī)器、通信器材、家電用品及照明設(shè)備上。

2 典型應(yīng)用范圍

1.汽車(chē)內(nèi)外飾：儀表板，飾柱，儀表前蓋，格柵，內(nèi)外飾件

2.商務(wù)設(shè)備機(jī)殼和內(nèi)置部件：筆記本/臺(tái)式電腦，復(fù)印機(jī)，打印機(jī)，繪圖儀，顯示器

3.電信，移動(dòng)電話外殼，附件以及智能卡：

4.電器產(chǎn)品，電子產(chǎn)品外殼，電表罩和殼體，家用開(kāi)關(guān)，插頭和插座，電纜電線管道

5.家用電器，如洗衣機(jī)，吹風(fēng)機(jī)，微波爐內(nèi)外部件[1]

3 注塑模工藝條件

干燥處理：加工前的干燥處理是必須的。濕度應(yīng)小于0.04%，建議干燥條件為90~110C，2~4小時(shí)。

熔化溫度： 230~300C。

模具溫度：50~100C。

注射壓力：取決于塑件。

注射速度：盡可能地高。

化學(xué)和物理特性: PC/ABS具有PC和ABS兩者的綜合特性。例如ABS的易加工特性和PC的優(yōu)良機(jī)械特性和熱穩(wěn)定性。二者的比率將影響PC/ABS材料的熱穩(wěn)定性。PC/ABS這種混合材料還顯示了優(yōu)異的流動(dòng)特性。收縮率在0.5%左右。[2]

4 Identify 1. New Method: With Ethyl Acetate, ABS does not silk, HIPS will silk, but only refers to pure. 2. Commonly used bs: There are many kinds of identification bs of ABS and PS, as far as ABS is concerned, the surface brightness is good, toughness is better than PS, after burning, there will be densely packed holes on the surface, the taste has a light sweet taste; PS is divided into GPPS, HIPS, EPS three kinds, more fragile, transparent products, hips brightness in general, toughness than ABS to a little less, burning the surface bright, has the taste of styrene. The cut surface of HIPS is white, but GPPS is not. EPS Is mainly used for foam. TV Shell materials, there are ABS, HIPS, generally according to the surface characteristics, physical characteristics to distinguish, the surface brightness is good in general ABS, with pliers break ABS to be better than HIPS, its hardness is higher, need some strength, and distinguish between fire and smell. 5 is a kind of modified engineering plastics which is synthesized by mixing. Among them, PC is polycarbonate, ABS is acrylonitrile (a) , butadiene (b) and styrene (s) copolymer. The properties of the modified plastics are better than those of Pc and ABS, for example, the impact resistance, heat resistance and hardness are improved. ABS Plastics