化學(xué)配方數(shù)據(jù)庫(kù)
| 配方類型： |
ADHESIVES |
| 配方說(shuō)明： |
Resin Emulsion Adhesives |
| 配方組成： |
Polyvinyl Alcohol/1
Benzene/25
Water/140
No.
"Vinsol"/100
Polyvinyl Alcohol/1
Polyvinyl Acetate/73
Benzene/35
Materials/1
Materials/2
"Vinsol"/100
Water/165
Polyvinyl Acetate/63
Dibutyl Phthalate/31
Dibutyl Phthalate/25 |
| 配制方法： |
Emulsify the polyvinyl acetate in an equal amount of water containing the polyvinyl alcohol as an emulsifying agent. Heat the "Vinsol" with the dibutyl phthalate and benzene at 55-60C. to form a smooth solution (10-15 minutes). then this "vinsol" solution is slowly added in alternate increments with the remaining water to the stirred polyvinyl acetate emulsion. When using a mechanical stirrer at 3,000-12,000 rpm, time required for adding the "Vinsol" solution is usually 10-15 minutes. During this time, as the emulsion thickens, the stirring speed is increased. Stable emulsions of 45-65 per cent solids are readily obtained. |
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