直销:ABS 加拿大Aclo ABS892DL 高耐热
ABS主要优点:
● 1. 极好的冲击强度、尺寸稳定性好,柔韧性好,耐磨性好;
● 2. 化学稳定性好:耐水、无机盐、碱和酸类,不溶于大部分醇类和烃类溶剂,而容易溶于醛、酮、酯和某些氯代烃中;抗化学药品性、染色性好;
● 3. 电性能良好;
● 4. 成型加工和机械加工好,与372有机玻璃的熔接性良好,制成双色塑件,且可表面镀铬,喷漆处理;流动性比HIPS差一点,比PMMA、PC等好;
● 5. 有高抗冲、高耐热、阻燃、增强、透明等级别。
缺点
热变形温度较低,可燃,耐候性较差。
ABS 应用场合
汽车(仪表板,工具舱门,车轮盖,反光镜盒等),电冰箱, 大强度工具(头发烘干机,搅拌器,食品加工机,割草机等),电话机壳体,打字机键盘,娱乐用车辆如高尔夫球手推车以及喷气式雪撬车等。
ABS 注塑工艺
★ 1. ABS成型收缩率约0.4-0.7%;
▲ 2. 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,条件80-90℃下3小时,材料湿度应保证小于0.1%;
★ 3. 宜取高料温,建议温度245℃,高模温,但料温过高易分解(分解温度为>270℃),对精度较高的塑件,模温宜取50-60℃,对高光泽、耐热塑件,模温宜取60-80℃;
▲ 4. 宜取中高速度注塑;
★ 5. 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;
▲ 6. 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,同时模具表面需增加排气位置。
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