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
‘Looks like quite the feast!’ said Hideji, his eyeswidening.
‘Not really. They call it “Kyoto comfort food” these days, but inthe past no one would have
dreamed of charging people money for simple fare like this. Still,I thought it might be the sort of
thing you’d enjoy.’ Nagare was unloading various dishes and smallbowls from the tray, arranging
them one by one on the table.
‘You’re not wrong. Looks like your intuition hasn’t fadedeither.’
As Hideji’s gaze skipped between the various dishes, Nagare wenton: