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
But now in the garden, behind the house, a four-piece bandbegan to play. All the guests had arrived. Don Corleone put theintruders out of his mind and led his two sons to the weddingfeast.
There were, now, hundreds of guests in the huge garden, somedancing on the wooden platform bedecked with flowers, otherssitting at long tables piled high with spicy116 food andgallon jugs117 of black, homemade wine. The bride, ConnieCorleone, sat in splendor118 at a special raised tablewith her groom, the maid of honor, bridesmaids and ushers119.It was a rustic120 setting in the old Italian style. Notto the bride's taste, but Connie had consented to a "guinea"wedding to please her father because she hadso displeased121 him in her choice of a husband.