Ultraviolet cured flame-retardant coating and preparation method thereof
A technology of flame-retardant coatings and ultraviolet light, which is applied in the direction of fire-resistant coatings, coatings, etc., to achieve good flame-retardant effects
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[0047] Example 1
[0048] The first step is to synthesize halogenated epoxy acrylate X-EA
[0049] Add the catalyst tertiary amine or quaternary amine salt and phenol polymerization inhibitor at the molar ratio of halogenated epoxy resin epoxy group to acrylic acid in the ratio of 1~1.05:1, and react at 100~110℃ for 3 hours , And react at 118~125℃ for 2 hours, check the acid value<3mgKOH / g, then X-EA can be obtained.
[0050] The halogenated epoxy resin can be replaced by chlorine and bromine, and bromine is generally more effective. The tertiary amine or quaternary ammonium salt of the catalyst is any one of triethylamine or tetraethylammonium bromide, and the amount is 0.1-0.3% of the mass of acrylic acid. The phenol polymerization inhibitor is hydroquinone or p-hydroxyanisole, and the amount is 0.05-0.1% of the mass of acrylic acid.
[0051] The second step is to synthesize phosphate acrylate compound PA
[0052] Use 1.1 moles of phosphorus pentoxide to slowly add 1.5 moles of hyd...
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[0060] Example 2
[0061] The first step is to synthesize halogenated epoxy acrylate. According to the molar ratio of halogenated epoxy resin epoxy group to acrylic acid of 1.05:1, add catalyst and polymerization inhibitor, and control the temperature at 100-110°C for 3 hours , Control the temperature at 118-125 degrees for 2 hours, and detect the acid value <3mgKOH / g, then X-EA can be obtained
[0062] The second step is to synthesize phosphate acrylate PA: molar ratio of phosphorus pentoxide: hydroxy chloroacrylate is 1:1.1. Add phosphorus pentoxide to hydroxypropyl chloroacrylate, stir while adding, and control Temperature ≤95℃, after the addition, control the temperature at 85-110℃, add halogenated propylene oxide after two hours, and stop the reaction when the acid value reaches 5-8mgKOH / g after 3 hours of reaction at 85-95℃;
[0063] The third step is to weigh the halogenated epoxy acrylate X-EA as 25%, the aliphatic urethane acrylate PUA as 20%, the phosphate acrylate PA as 5...
Example Embodiment
[0064] Example 3
[0065] The first step is to synthesize halogenated epoxy acrylate. According to the molar ratio of halogenated epoxy resin epoxy group to acrylic acid of 1.05:1, add catalyst and polymerization inhibitor, and control the temperature at 100-110°C for 3 hours , Control the temperature at 118-125 degrees for 2 hours, and detect the acid value <3mgKOH / g, then X-EA can be obtained
[0066] The second step is to synthesize phosphate acrylate PA: molar ratio of phosphorus pentoxide: hydroxy chloroacrylate is 1:1.2. Add phosphorus pentoxide to hydroxy chloroacrylate, stir while adding, and control the temperature ≤95℃, control the temperature at 85-110℃ after adding, add halogenated propylene oxide after two hours, and stop the reaction when the acid value reaches 5-8mgKOH / g after 3 hours of reaction at 85-95℃;
[0067] The third step is to weigh the halogenated epoxy acrylate X-EA as 30%, the aliphatic polyurethane acrylate PUA as 10%, the phosphate acrylate PA as 7%, an...
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