| 配方類型： |
ADHESIVES |
| 配方說明： |
Butyl Rubber Caulking Compounds---Gun Grade |
| 配方組成： |
8) Aluminum Paste (73.5% N.V.)/-
No.
5) "ATOMITE"/450 lb
6) "International Fiber"/150 lb
7) "TiPure" R-900/-
2) "Indopol" H-1900 or Polyvis 200/168 lb
9) Mineral Spirits/65 lb
8) Aluminum Paste (73.5% N.V.)/35 lb
9) Mineral Spirits/66 lb
5) "ATOMITE"/500 lb
3) "Castung" 64 Z-3/32 lb
6) "International Fiber"/150 lb
1) 50% 035 Butyl Rubber in Min. Spirits/247 lb
1) 50% 035 Butyl Rubber in Min. Spirits/247 lb
2) "Indopol" H-1900 or Polyvis 2 |
| 配制方法： |
The development of these caulks was on a 50% solids cut of butyl rubber 035 in mineral spirits. This cut can also be purchased in VM & P if faster solvent release is desired. Obviously, the butyl rubber could be bought at 100% solids and cut by the caulk manufacturer at considerable savings; however, many producers might not have the equipment to efficiently produce a good cut. Non-staining grades of butyl rubber may offer some advantages in color after long exposure and this should be evaluated where maximum color retention is considered to be major importance.
A heavy duty double sigma blade Baker Perkins mixer is the type of equipment recommended for making these formulations and the suggested technique is as follows. Roughly one-half of the butyl cut is added to the mixer, followed by the ATOMITE, rutile titanium dioxide (for white caulk) and International Fiber, in that order. The Indopol H-1900 and/or a sufficient amount of the remaining butyl cut should be added as necessary to incorporate the pig |
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