產品展示
TP91 Epoxy Hardener (Similar to Estron G91)
Description
Epoxy Hardener TP91 is an imidazole type of curing agent for epoxy-based powder coatings. Coatings cured with TP91 show excellent chemical resistance, mechanical properties and the capability for low temperature cure. ??
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Technical Parameters
Item |
Test Method |
Specifications |
Appearance |
Visualization |
Tan to Brown Granules |
Specific Gravity (25/25) |
GB/T617-2006 |
1.1 – 1.2 |
Melting Range（℃） |
Ring & Ball |
92 -105 |
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Dosage
3 -6 parts per 100 parts of Epoxy Resin
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Results from Powder Coating Evaluations ??
Epoxy Hardener Used |
Epoxy Hardener TP91 |
Epoxy Hardener TP91 |
Epoxy Hardener G92 |
Chemistry Composition |
Modified Imidazole |
Modified Imidazole |
Accelerated Phenolic |
Ratio of Epoxy to Hardener |
100:3 |
100:5 |
75:25 |
Gel?time, Seconds at 200℃ |
75 |
50 |
35 |
Fastest Cure time at 200℃ |
3mins |
2mins |
3mins |
Lowest Cure Cycle for 30mins |
120℃ |
110℃ |
120℃ |
Yellowing |
Tends to yellow at higher bake temp |
More tendency to yellow |
Remains white |
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Application
High gloss epoxy powder coatings based on this hardener can be cured at temperatures ranging from 200°C to 110°C.The powder coating formulator has flexibility in assigning cure schedule profiles for various substrates such as composites or MDF since the physical film properties are not affected by cure temperature.
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Package & Storage & Handling
1.?Available in polyethylene-lined, multi-ply paper bags,?N.W. 25KG/Bag.
2.?Store in a cool and dry place to avoid contacting other chemical products. Seal after?use.?Please wear dustproof mask and glove when operating.
3.?Validity will be 1 year under normal temperature.
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