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Epoxy powder coating low temperature crosslinking agent
2017-8-13 19:23:51
Epoxy powder coating low temperature crosslinking agent
Low temperature crosslinking agent for epoxy powder coating is a kind of imidazoline with cyclamidine chemical structure. It can also be used as a crosslinking promoter for epoxy powder coating cryogenic crosslinking agent. It is used for pure epoxy powder coating or epoxy - polyester mixed powder coating. The catalytic effect of 2-methymidazole was mild and similar.
Epoxy powder coating low temperature crosslinking agent
1. Can be used as epoxy powder coating with high reaction active crosslinking agent. Add 5 ~ 7% of the amount of epoxy.
2. It can be used as the crosslinking promoter of the epoxy powder coating or epoxy-polyester mixed powder coating, and can increase the luster appropriately. The added amount is 0.05 ~ 0.3% of the total formula.
3, due to the low temperature crosslinking agent epoxy powder coating has high reactivity, so in the process of epoxy powder coating production, extrusion temperature should be controlled in < 100 ℃ condition, in order to prevent the happen of gel.
4, in epoxy powder coating can be used as a quick crosslinking agent and crosslinking agent, meet 15 min ~ 200 ℃ 130 ℃ * * crosslinking conditions of 5 min. The low temperature crosslinking agent of epoxy powder coating can be used as a more effective rapid crosslinking accelerator with other active crosslinking agents.
5. Also due to the high activity of low-temperature crosslinking agent in epoxy powder coating, the storage stability problem should be paid attention to when it is used as crosslinking agent. Itself can agglomerate, made into powder should also be in store below 25 ℃.
The reference formula of low temperature crosslinking agent for epoxy powder coating is as follows:
1264% epoxy E -
Crosslinking agent 3024%
Catalyst 3040.5%
Flow ping agent H981 %
Chinese name: Diethyl toluene diamine(DETDA)Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Titanium dioxide 20%
Precipitated barium 10.5%
Extrusion temperature: 70-80
Crosslinking temperature: 120 ℃ * 30 min bending, impact, however.
130 ℃ * 15 min bending, hit 1250 px/kg
The surface of the film has a slight yellowing, orange peel, and the reduction of catalyst can improve the phenomenon of yellow tangerine peel.
Imidazoline: N - (2-hydroxyethyl) - 2 - heptadecenyl - 2 - imidazoline; Hydroxyethyl heptadecenyl glyoxalidine; 1 h - Imidazole - 1 - ethanol, 2 - (heptadecenyl) - 4, 5 - dihydro -; 1 - HYDROXYETHYL - 2 - HEPTADECENYLIMIDAZOLINE; 2 - (Heptadecenyl) - 4, 5 - dihydro - 1 h - imidazol - 1 - ethanol; 1 - (2 - hydroxyethyl) - 2 - (heptadecenyl) imidazoline; 1-2 - heptadecenyl imidazoline hydroxyethyl
Imidazoline is also called dihydroimidazole. There are 4, 5 -, 2, 5 - and 2, 3-dihydroimidazole, or 2 - imidazoline, 3 - imidazoline and 4 - imidazoline, respectively.
Is strong alkaline, low melting point solid. Soluble in most organic solvents, has good foamability, net washing, emulsification, hard water resistance, antistatic property and soft fabric, such as performance, and has the characteristics of high nontoxic and biodegradable, but also has the ability of sterilization and disinfection. More importantly, it has no irritation to the skin and eyes. It is stable in both acid and alkaline medium, and can be used in combination with Yin, Yang and non-ionic surfactants.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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