Polystyrene (PS) つのプラスチック

Polystyrene (PS) - Polystyrene is an amorphous, glassy polymer that is generally rigid and relatively inexpensive. Unfilled polystyrene has a sparkle appearance and is often referred to as crystal PS or general purpose polystyrene (GPPS). High impact polystyrene grades (HIPS) are produced by adding rubber or butadiene copolymer which increases the toughness and impact strength of the polymer. Polystyrenes possess good flow properties at temperatures safely below degradation ranges, and can easily be extruded, injection molded, or compression molded. Considerable quantities of polystyrene are produced in the form of heat-expandable beads containing a suitable blowing agent which ultimately results in familiar foamed polystyrene articles.
Polystyrene (PS) has been known for well over one hundred years but its real molecular nature was not clarified until about 1920 when the work of Staudinger elucidated the materials molecular structure in the very early days of polymer science. About 1930 I.G. Farben, in Germany, first produced polystyrene, while at the same time the Dow Chemical Company commenced their ultimately successful development of the material.
機能
高耐衝撃性 (366), 難燃性 (256), 食品接触用途可 (254), 一般用途 (201), 加工特性良好 (175), 高耐熱性 (155), 発泡性 (149), 高流動性 (108), 高成形サイクル (104), 流動性良好 (100), 157 以上...
用途
パッケージ (242), シート (157), 絶縁 (139), 一般用途 (126), 家庭用品 (109), 電気/電子機器 (107), おもちゃ (105), 機器部品 (103), 発泡 (103), コンテナ (102), 142 以上...
Disadvantages
- Flammable, but retarded grades available
- Poor solvent resistance, attacked by many chemicals
- Homopolymers are brittle
- Subject to stress and environmental cracking
- Poor thermal stability
Typical Properties and Processing Information
View material property information for Polystyrene (PS) plastics.