播放中国国产国语纯一级黄片免费看, 大鸡吧快来啊阿啊阿啊黄片在线播放, 中文精品日韩网站在线观看视频免费, 别揉我奶头~嗯~啊~一区二区三区,AV无码播放一级毛片免费古装,亚洲春色一区二区三区,91大神极品,美国一级大黄一片免费下载,午夜爽爽爽男女免费观看软件

化學(xué)配方數(shù)據(jù)庫(kù)
配方類型: ADHESIVES
配方說(shuō)明: Emulsion Adhesive
配方組成: Polyvinyl Alcohol/1
Benzene/25
Water/140
Formula No.
Polyvinyl Alcohol/1
Polyvinyl Acetate/73
Benzene/35
Water/165
"Vinsol" Resin/100
Dibutyl Phthalate/31
Polyvinyl Acetate/63
"Vinsol" Resin/100
Dibutyl Phthalate/25
配制方法: The polyvinyl acetate is emulsified with an equal volume of water containing the polyvinyl alcohol. The latter acts as an emulsifier.
Vinsol resin, dibutyl phthalate, and benzene are dissolved at 55-60C (130-14-F). When blending is complete (in about 10-15 min), the solution is slowly stirred into the polyvinyl acetate emulsion. The remaining water is added at the same time. With good agitation, stable emulsions of 45-65 percent solids are readily obtained.

返回?cái)?shù)據(jù)庫(kù)查詢
QQ: 2241752642
微信二維碼
電話: 19906633110