| 配方類型： |
ADHESIVES |
| 配方說明： |
Tape Sealant (Polyisobutylene) (No.2) |
| 配方組成： |
Titanium Dioxide/2.00
Calcium Carbonate/35.05
Polyisobutylene Rubber/19.90
Platelet Talc/7.50
Attapulgas Clay/12.25
Butyl Rubber/-
Amoco Polybutene H-300/19.90
Diatomaceous Silica/3.40 |
| 配制方法： |
In the laboratory the polyisobutylene and butyl rubbers are mixed in a dual-arm sigma blade mixer for approximately 20 min. Dry ingredients are incrementally added in the order listed while mixing. The sealant is dumped, rested 24 h, and extruded.
Note: Formula No.2 is a polyisobutylene-based tape which offers the high performance of conventional asbestos-containing sealants at a lower raw material cost while eliminating the hazards associated with asbestos.
Formula No.3 incorporates butyl rubber. These sealants are suggested for use in metal building systems and automotive applications. |
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