欧美伊人操美女夜晚影院视频|亚洲激情乱伦av|亚洲电影大全AV|能直接看的免费av|日韩黄色电影在线播放视频|成人无码av网站|a级片免费在线观看|日本欧美在线播放专区|欧美性交A片视频|制服丝袜怡红院av大奶

 
Collection Mail Us 簡體版
Loading...
Your position:Home > News
News

 
PRODUCT SEARCH
 
 
HOTLINE:
86-758-3855912  
No. 33 Industrial Broadway, NaJiang Industrial Zone, SiHui , GuangDong, China
gdxiangsu@gdxiangsu.com
Linkman:  Ms. angel hu
 
   
Industry News >

The History of Plastics

2012-03-26  Font size: [Large] [Middle] [Small]  Print
Tips:The History of Plastics

he First Man-Made Plastic - ParkesineThe first man-made plastic was created by Alexander Parkes who publicly demonstrated it at the 1862 Great International Exhibition in London. The material called Parkesine was an organic material derived from cellulose that once heated could be molded, and retained its shape when cooled.

Celluloid

Celluloid is derived from cellulose and alcoholized camphor. John Wesley Hyatt invented celluloid as a substitute for the ivory in billiard balls in 1868. He first tried using collodion a natural substance, after spilling a bottle of it and discovering that the material dried into a tough and flexible film. However, the material was not strong enough to be used as a billiard ball, until the addition of camphor, a derivative of the laurel tree. The new celluloid could be molded with heat and pressure into a durable shape.

Besides billiard balls, celluloid became famous as the first flexible photographic film used for still photography and motion pictures. John Wesley Hyatt created celluloid in a strip format for movie film. By 1900, movie film was an exploding market for celluloid.

Formaldehyde Resins - Bakelite

After cellulose nitrate, formaldehyde was the next product to advance the technology of plastic. Around 1897, efforts to manufacture white chalkboards led to casein plastics (milk protein mixed with formaldehyde) Galalith and Erinoid are two early tradename examples.

In 1899, Arthur Smith received British Patent 16,275, for "phenol-formaldehyde resins for use as an ebonite substitute in electrical insulation", the first patent for processing a formaldehyde resin. However, in 1907, Leo Hendrik Baekeland improved phenol-formaldehyde reaction techniques and invented the first fully synthetic resin to become commercially successful, tradenamed Bakelite.

[ Back ]
 Next:Have no data!
 Prev:Have no data!
About Us \ News \ Model Projects \ Feedback \ Contacts \ Sitemap \ 簡體版
  Copyright ? 2012-2013 Sihui Xiangsu Industry Co., Ltd.  All rights reserved. 粵ICP備07026216號 Power by:Eforinfo.Com 
Production Base:No. 33 Industrial Broadway, NaJiang Industrial Zone, SiHui , GuangDong, China
Sales Hotline:86-758-3855912     Sales Fax:86-758-3855932
Sales Hotline:86-0757-86665089    Sales Fax:86-0757-86663362