塩素化ゴム 化學(xué)特性,用途語,生産方法
解説
天然ゴムやブチルゴムの溶液または酸性ラテックスに塩素を通して得られる白色または微黃色の物質(zhì)．改質(zhì)ゴムの一種．ゴム工業(yè)では塩化ゴムという．
化學(xué)的特性
Chlorinated rubber is typically prepared by treating a solution of masticated
natural rubber in chloroform or carbon tetrachloride with chlorine at
80-100°C until sampling indicates the product has a chlorine content of
about 65%. During this time, hydrogen chloride is evolved. After the passage
of chlorine has been stopped, the solution is refluxed until the evolution of hydrogen chloride ceases; this results in a product of good stability. The
chlorinated rubber is then isolated by precipitation with methanol.
定義
An elastomer (natural
rubber or a polyolefin) to which 65% of chlorine
has been added to give a solid, film-forming resin.
White, amorphous powder available in viscosity
grades from 5 to 125 c P, the figures indicating vis-
cosity of a 20% solution in tol
製造方法
The reaction of natural rubber and chlorine is complex and possibly
involves the following sequence￡o
危険性
Do not dry-mill chlorinated rubber with
zinc oxide; mixture reacts violently at 216C. Do
not use in baked enamels.
塩素化ゴム 上流と下流の製品情報
原材料
準(zhǔn)備製品