九九热线有精品视频99,亚洲高清毛片一区二区,无码视频在线播放性色,精品动漫中文字幕一区二区三区

What is the function of Jiangmen engineering plastics

2020-09-14 2146

Engineering plastics can be used as engineering materials and substitute for metals. Excellent mechanical function, heat resistance and dimensional stability are required. There are polyoxymethylene, polyamide, polycarbonate, ABS plastics and so on. For example, the mechanical and mechanical functions of polyoxymethylene are similar to those of copper and zinc. If it is used as a bearing on a car, its service life is twice as long as that of metal. It can also be used as other spare parts. Polycarbonate can not only replace some metals, but also replace glass, wood and alloy. It can be used as the shell of various instruments, bicycle frame, windshield and furniture of aircraft.

(1) polyamide (nylon)

Polyamide is a kind of thermoplastic engineering plastics. It is a long chain polymer compound formed by many units with amide group structure. For example, nylon-66 is polycondensated from adipic acid and hexanediamine, and its structural formula is

Due to its light weight, excellent mechanical strength, wear resistance and good corrosion resistance, polyamide is widely used to replace copper and other metals in the manufacturing of bearings, gears, pump blades and other parts in machinery, chemical industry, surface, car and other industries. Polyamide has high strength after melt spinning. It can be used as synthetic fiber and medical suture.

江門工程塑料

(2) ABS engineering plastics

ABS resin is a copolymer of acrylonitrile (a), butadiene (b) and styrene (s)

ABS resin maintains the excellent electrical function and easy processing formability of styrene, but also increases elasticity, strength (the characteristics of butadiene), heat resistance and corrosion resistance (excellent function of acrylonitrile), and has high surface hardness and good chemical resistance. By changing the share of the above three components, various functions of ABS can be changed. Therefore, ABS engineering plastics have a wide range of uses and primary uses In mechanical, electrical, textile, car and shipbuilding industries.

(3) polycarbonate

Polycarbonate is a new type of thermoplastic engineering plastics

Polycarbonate has excellent electrical insulation function and mechanical function, especially in shock resistance function. It has high tolerance, wide temperature planning (- 100 ~ 130 ℃), high transparency (known as "Tongming metal") and convenient processing and molding. It can replace not only some metals, but also glass and wood. In recent years, polycarbonate has developed rapidly and has been widely used in machinery, car, aircraft, instrument surface and electrical appliances.

Source: Jiangmen engineering plastics http://www.toto001.cn/


Recommended news
国产午夜福利精品偷伦麻豆| 亚洲欧美日韩国产综合久| 国产一区日韩二区欧美| 国产精品免费看久久久国产| 亚洲一区二区三区免费网站| 18国产精品白浆在线观看免费| 国产一区成人亚洲激情欧美| 在线综合亚洲欧美网站无弹窗 | 亚洲av无码乱码在线| 久久这里只有精品首页| 欧美综合自拍亚洲综合图自拍| 亚洲中文字幕在线一区播放| 亚洲 自拍 偷拍 另类| 亚洲欧美一区二区三区在线播放 | 久久久自慰白浆91精品| 无码久久精品国产亚洲A∨影片| 精品综合久久久久久99| 国产综合精品免费观看一区二区| 福利日韩午夜视频在线| 99在线精品视频免费观里| 国产精品国产三级国产a| 国产99黄色播放视频| 亚洲永久精品国韩久精| 国产亚洲精品高清线久久久久| 中文字幕一区二区无码人妻| 日本精品久久久久久久久免费 | 亚洲欧美日韩综合网导航| 亚洲精品理论电影在线观看| 成年性午夜免费视频网站不卡 | 婷婷99一区二区三区综合国产| 一级毛片在线视频免费| 都市激情 在线 亚洲 国产| 欧美一区二区丁香五月天激情| 久久久久亚洲av无码专区导航| 日韩新片中文字幕无码| 色妞一区二区三区免费视频观看| 99久在线国内在线播放免费观看| 国产一区二区三区高清av| 久久精品国产99国产电影| 高清国产亚洲精品自91| 中文字幕人妻高清乱码|