化學(xué)配方數(shù)據(jù)庫(kù)
| 配方類(lèi)型： |
ADHESIVES |
| 配方說(shuō)明： |
Polysulfide Sealant |
| 配方組成： |
Wet-ground calcium carbonate/20.0
Accelerator (50% lead peroxide inn dibutyl phthalate)/15.0
Sulfur (curing aid)/0.1
titanium dioxide/10.0
stearic acid (wetting agent)/1.0
Polysulfide elastomer/100.0
"CAB-O-SIL" M-5/1.0-3.0
Phenolic resin tackifier/5.0
Additives/0.2-1.2 |
| 配制方法： |
A non-sagging polysulfide sealant containing a phenolic tackifier can be prepared with 1.2 phr "CAB-O-SIL" M-5 and 0.3% ethylene glycol dispersed in the resin. Excellent shelf stability and non-sagging properties during pot life can be obtained with this formulation.
since phenolic tackifiers stain masonry, epoxy tackifiers or other substitutes are often used. When an epoxy tackifier is used, it is added to the accelerator portion. In this formulation 1.6 phr "CAB-O-SIL" M-5, 0.2% ethylene glycol, and 0.2% "Triton" X-100 are needed to produce a shelf stable sealant composition. |
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