Sealant
DH Wear Resistant Sealant is a kind of low-solvent brown jelly, the main composition is organic macromolecule resin, with non-volatile higher than 70％. It is used as vapor barrier sealant in joint of cellular glass and urethane foam board insulation. China Sealant remains soft and flexible in cryogenic temperature, preventing damage to the insulation due to thermal cycling.
Technical Data
|
Test Item
|
Unit
|
Technical Data
|
|
Appearance
|
|
Brown Jelly
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|
Density
|
kg/m³
|
1100±100
|
|
Non-volatile
|
％
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≥70
|
|
Low Temperature Resistance
|
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No peeling off after being soaked in liquid nitrogen
(-196℃) for 72 hours.
|
|
High Temperature Resistance
|
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No cracking or peeling off after
being placed in 60℃ for 168 hours.
|
|
Service Temperature
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℃
|
-196～80
|
Product Application
it is generally used as glue and sealant between thermal insulation materials, (eg. Cellular Glass, PIR-polyisocyanurate and PUR-polyurethane and etc), it remains flexible through temperature cycling, meanwhile excellent sealing effect can be achieved at joint butt to prevent insulation structure failure from water or water vapor penetration, it can set at ambient temperature.
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