| 配方类型： |
ADHESIVES |
| 配方说明： |
Elastomeric Sealant, Construction |
| 配方组成： |
Molecular Sieve (4A)/1.0
One Step Formulation (Constant Low Humidity Conditions)
1. Combine DPM-1002 resin, plasticizer and "thixcin" R. Blend with a
high shear mixer until a temperature of 130-140'F. is reached.
2. Add "Silane" and blend in with slow speed mixer. Add remaining
ingredients and blend the entire formulation with a slow speed mixer.
3. Pass over a tight three roll mill until a Hegman value of six or less
is indicated.
4. Package in moisture-impermeable containers.
Three Step Formulation (Variable Humidity Conditions)
Step 1
combine the CaO2 and BaO with sufficient plasticizer and "Thixcin" R to
form a low viscosity paste. Molecular sieves may be included to help
remove any moisture present. For example, the following components of
the formulation may be used to prepare an activator paste
"Aroclor" 1254/40.0
"Silane" A-189/1.0
DPM-1002/100.0
Calcium Peroxide/10.0
Barium Oxide/1.4
Dioctyl Phthalate |
| 配制方法： |
Grind on a three roll mill with minimum air exposure. Store in moisture-impermeable containers.
Ideally, the activator should be prepared under dry air, dry nitrogen or vacuum. Totally enclosed equipment might be suitable if adequate grinding can be obtained.
Step 2 Process the remaining components of the formulation with a procedure identical to that used in the one step technique.
Step 3 Combine proper proportions of materials produced in Steps 1 and 2 by blending with a slow speed mixer under a dry atmosphere.
Package in containers which will prevent moisture contamination during storage. Aluminumfoil lined cardboard cartridges appear to be satisfactory. |
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