高刚度POM Delrin 570 NC000美国杜邦DUPONT

聚甲醛塑料，俗称赛钢，为结晶性热可塑性塑料，具明显熔点165~175℃，性质zui接近金属。 

优点  1、具高机械强度和刚性

2、zui高的疲劳强度

3、环境抵抗性、耐有机溶剂性佳

4、耐反覆冲击性强

5、广泛的使用温度范围(-40℃~120℃)

6、良好的电气性质

7、复原性良好

8、具自已润滑性、耐磨性良好

9、尺寸安定性优  

缺点  1、加工过程若长时间高温下易起热分解

2、无自熄性

3、抗酸性差

4、成形收缩率大  

用途  电子电器：洗衣机、果汁机零件、定时器组件

汽         车： 车把零件、电动窗零件

工业零件：机械零件、齿轮、把手、玩具、螺杆

diligent as ever, aren’t you,’ said koishi, scanning hideji’s rowsof carefully printed characters
and sitting up. ‘so, what dish are you looking for?’
‘nabeyaki-udon. you know, vegetables and chicken simmered with udonnoodles.’
‘any other details?’ said koishi, flipping55 openher notebook.
‘well, it’s the kind my wife used to make.’
‘i see. it’s been a while since she passed away, hasn’tit?’
‘fifteen long years.’