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
The groom, Carlo Rizzi, was a half-breed, born of aSicilian father and the North Italian mother from whom he hadinherited his blond hair and blue eyes. His parents lived in Nevadaand Carlo had left that state because of a little trouble with thelaw. In New York he met Sonny Corleone and so met the sister. DonCorleone, of course, sent trusted friends to Nevada and theyreported that Carlo's police trouble was a youthful indiscretionwith a gun, not serious, that could easily be wiped off the booksto leave the youth with a clean record. They also came backwith detailed122 information onlegal gambling123 in Nevada which greatly interested theDon and which he had been pondering over since. It was part of theDon's greatness that he profited from everythi