Benzonitrile Benzimidazole compounds
Active ingredient content (%) ≥98
Morphology: white to off-white powder
Stability: acid and alkali resistant, heat resistant
Stable to ultraviolet light, decomposition temperature greater than 280 ℃
The system in which the resin and filler need to be mixed and stirred before molding is particularly convenient and effective, and can also overcome some of the shortcomings of the filler surface treatment ebs wax method. The action process of the above blending method is: the silane coupling agent first migrates from the resin to the surface of the fiber or filler, and then interacts with the filler. Therefore, after the silane coupling agent is incorporated into the resin, it must be placed for a period of time to complete the migration process, and then be cured to obtain a better effect. Theoretically, the amount of silane coupling agent molecules that migrate to the surface of the filler is only equivalent to the amount of monomolecular layer formed on the surface of the filler, so the amount of silane coupling agent only needs to be 0.5% to 1.0% of the resin mass. In the composite material formula, Can add some methyl trialkoxy silane as additives. It should be noted that the silane coupling agent is added first, and then the additives are added to obtain better results. As long as the silane coupling agent is selected appropriately and the operation is correct, in most cases, the effect is no less than that of the surface treatment method.
How to use primer
The application of primer can form an intermediate boundary layer, which often improves the adhesion of organic polymers to inorganic substrates. Silane coupling agent is used for primer.
Application of silane coupling agent in coatings and inks
Application of silane coupling agent directly in coatings and inks
Silane coupling agents can be used as adhesion promoters in coatings, including resin dispersions or solutions, thick plastisol paints, thin primers, varnishes and inks, as illustrated below.
The silane coupling agent mixed into vinyl acrylate, epoxy and polyurethane coatings can significantly improve their adhesion and anti-aging properties. For example, spray the CH-CHCH z OCH, Si cOMe) solution on the aged epoxy resin coating, dry for 24 hours, and then use the same epoxy resin to coat a layer with a thickness of about 150 pm. After curing for 48 hours at ℃, the effective rate of bonding between the new and old coatings reaches 100% (mass fraction), while only 3% does not use silane coupling. In the above-mentioned system, the silane coupling agent can be used as a primer or an auxiliary agent, and the effect is satisfactory.
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