Ultraviolet odorless coating and preparation method thereof
A technology for deodorization and coating, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as adverse environmental effects, and achieve the effect of solving the problem of odor release and ultra-low VOC emissions
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Embodiment 1
[0027] An ultraviolet odor-cleaning paint is made of the following raw materials in parts by weight:
[0028] 45-60 parts of macromolecular photocurable resin; 10-35 parts of silicon-modified photocurable monomer; 10-35 parts of other monomers; 0-20 parts of powder; 1-5 parts of auxiliary agent; share.
[0029] Other monomers are all toluene-free reactive monomers.
[0030] A preparation method for an ultraviolet odor-cleaning paint, comprising the following steps:
[0031] First, mix the macromolecular photocurable resin, silicon-modified photocurable monomer, and other monomers evenly, then add additives and photoinitiators and mix evenly, and finally add powder, and mix evenly to obtain an ultraviolet odor-cleaning paint.
Embodiment 2
[0033] The preparation method of macromolecular photocurable resin comprises the steps:
[0034] 1. First add diisocyanate, polyester polyol or polyether polyol and catalyst I into the reaction vessel according to the proportion, mix evenly, fill with nitrogen, react at 60°C-70°C, keep warm for 2.0h-4.0h, Detect the NCO% content in the reaction process;
[0035] 2. When the NCO% content is close to the theoretical value, add dried hydroxyurea for chain extension reaction, keep warm at 65°C-80°C for 2.0h-4.0h, and then detect the NCO% content in the reaction process;
[0036] 3. When the NCO% content is close to the theoretical value, add polymerization inhibitor II and monohydroxy acrylate monomer, react at 65℃~85℃ for 2.0h~3.0h, detect the NCO% content in the reaction process, when the NCO% content When it is less than 0.1%, the reaction temperature is lowered to below 60°C to obtain a macromolecular photocurable resin.
[0037] Diisocyanates are hexamethylene diisocyanate ...
Embodiment 3
[0044] The preparation method of silicon-modified photocurable monomer comprises the steps:
[0045] Add polyfunctional photocurable monomer, catalyst II, and polymerization inhibitor II into the reaction bottle, and gradually raise the temperature to 95-130°C, then add hydrogen-containing silicone oil dropwise, and keep warm at 120-140°C for 8.0-10.0 h, sampling and using infrared spectroscopy to detect silicon-hydrogen bond peaks;
[0046] After the sampling test is qualified, the temperature is lowered and the material is discharged to obtain a silicon-modified light-curable monomer.
[0047] The polyfunctional photocurable monomer is one or more of pentaerythritol tetraacrylate, pentaerythritol triacrylate, di-trimethylolpropane tetraacrylate, dipentaerythritol hexaacrylate, and dipentaerythritol pentaacrylate;
[0048] The hydrogen-containing silicone oil is a long-chain low hydrogen-containing silicone oil with a hydrogen content of 0.1-0.22% and an average molecular we...
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