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
More like keeps an eye on me,’ replied Nagare witha chuckle39.
‘I never would have thought you’d end up running a restaurant, youknow.’
‘Actually, I’ve been meaning to ask since you walked in here. Howdid you find us?’ asked
Nagare, coming over and sitting by him on the tatami.
‘Well, my boss is a bit of a foodie. He likes toread Gourmet40 Monthly,and keeps a stack of back
issues in the boardroom. When I saw your advert41 inthe magazine, I put two and two together.’
‘Now see, that’s why we called you Hidejithe Hawk42.I can’t believe you knew it was my
restaurant from a one-line advert like that. There weren’t even anycontact details! And yet here
you are.’ Nagare was shaking his head in admiration43.