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TP91 Epoxy Hardener (Similar to Estron G91)

2021-04-20     瀏覽次數(shù):1181    

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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