汽车塑料部件耐高温吗,最低多少度?

2025-03-15 22:47:46
推荐回答(2个)
回答1:

塑料耐高温网带POM材质一般耐高温100-120度。
POM材质合成树脂中的一种,又名聚甲醛树脂、POM塑料、赛钢料等;是一种白色或黑色塑料颗粒,具有硬度、高钢性、高耐磨的特性。主要用于齿轮,轴承,汽车零部件、机床、仪表内件、玩具等起骨架作用的产品。
POM材质性能:
(1)POM是结晶型塑料,密度为1.42g/cm3,它的钢性很好,俗称“赛钢”.
(2)它具有耐疲劳、耐蠕变、耐磨、耐热、耐冲击等优良的性能,且摩擦系数小,自润滑性好.
(3)POM不易吸湿,吸水率为0.22~0.25%,在潮湿的环境中尺寸稳定性好,其收缩率为2.1%(较大),注塑时尺寸较难控制,热变形温度为172℃,聚甲醛有均聚甲醛两种,性能不同(均聚甲醛耐温性好一点).

回答2:

汽车中零部件的规格有专门的车规定义,和普通的工规是有区别的。
塑料部件,根据着装位置分也有不同的等价要求,一般裸露件(比如内部的音响表面、外部的速塑料封条),是-40到105度,有的车厂根据贩卖实际把低温缓和到了-30度,高温缓和到了85度。

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