成型特性:1.无定形料,流动性中等,吸湿大,必须充分干燥,表面要求光泽的塑件须长时间预热干燥80-90度,3小时.
2.宜取高料温,高模温,但料温过高易分解(分解温度为>270度).对精度较高的塑件,模温宜取50-60度,对高光泽.耐热塑件,模温宜取60-80度.
3、如需解决夹水纹,需提高材料的流动性,采取高料温、高模温,或者改变入水位等方法。
4、如成形耐热级或阻燃级材料,生产3-7天后模具表面会残存塑料分解物,导致模具表面发亮,需对模具及时进行清理,模具表面需增加排气位置。
ABS工程塑料一般是不透明的,外观呈浅象牙色、无毒、无味,兼有韧、硬、刚的特性,燃烧缓慢,火焰呈黄色,有黑烟,燃烧后塑料软化、烧焦,发出特殊的肉桂气味,但无熔融滴落现象。
Forming characteristics: 1.Amorphous material, with moderate fluidity and high moistureabsorption, must be fully dry. Plastic parts with a glossy surfacemust be preheated and dry for a long time at 80-90 degrees Celsiusfor 3 hours
2. Ut alta temperatura materiaeet alta temperatura molda utilizat, sed si temperatura materiaeexcelsa alta est, facile est decompositi (temperaturadecompositionae>270 degrees). For high-precision plastic parts,the mold temperature should be 50-60 degrees, and for high glossand heat-resistant plastic parts, the mold temperature should be60-80 degrees.
3. To solve the problem ofwater marks, it is necessary to improve the fluidity of thematerial by adopting methods such as high material temperature,high mold temperature, or changing the inlet waterlevel.
4. If heat-resistant orflame-retardant materials are formed, plastic decompositionproducts will remain on the surface of the mold after 3-7 days ofproduction, causing the mold surface to shine. It is necessary toclean the mold in a timely manner, and increase the exhaustposition on the mold surface.
Plastika ABS ingenieriagenerale opaque sunt, cum luce eburno coloratum, non toxicam etodorem apparentibus. Habent characteres fortitudinis, duritatis, etrigiditates. Lentem ardent, flamma flamma et fumo nigra. Postcombustionem plasticus tenebat et ardent, emittint odorem cinnamonis speciosum, sed non est phenomenum conflationis etlactantis.