Preparation method of fluorine modified light-cured polyurethane acrylate resin and application thereof as light-cured coating hydrophobic filling material
A polyurethane acrylate and fluorine modification technology, which is applied in the preparation of polyurea/polyurethane coatings, organic compounds, carbamic acid derivatives, etc., can solve the problems of complex components, troublesome construction, slow curing, etc.
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Embodiment 1
[0026] The present embodiment to embodiment 3 are polycarbonate diols (PCDL) using different molecular weights as the soft segment, isophorone diisocyanate (IPDI) as the hard segment, and pentaerythritol triacrylate (PET3A) as the photosensitive monomer Capped to introduce photosensitive double bonds, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 8-tridecafluoro-1-octanol capped to introduce hydrophobic functional groups A UV curable polyurethane acrylate elastic handle matt paint prepared with polyurethane acrylate as matrix resin.
[0027]The first step is to add a metered amount of IPDI and DBTDL with a solid content of 0.3wt% into a three-necked flask equipped with a thermometer and a mechanical stirring device as a catalyst, add a small amount of butyl acetate to dilute, and then add an appropriate amount of The molar ratio of the PET3A of the polymerization inhibitor BHT is 1:1. During the reaction, the content of NCO groups was continuously monitored by titration. When the theor...
Embodiment 2
[0029] The first step is to add a metered amount of IPDI and DBTDL with a solid content of 0.3wt% into a three-necked flask equipped with a thermometer and a mechanical stirring device as a catalyst, add a small amount of butyl acetate to dilute, and then add an appropriate amount of The molar ratio of the PET3A of the polymerization inhibitor BHT is 1:1. During the reaction, the content of -NCO group was continuously monitored by titration. When the theoretical value was reached, the reaction was stopped to obtain PET3A semi-blocked IPDI, which was sealed and placed in a dry place away from light. The second step is to add a metered amount of IPDI and DBTDL with a solid content of 0.3wt% into a three-necked flask equipped with a thermometer and a mechanical stirring device as a catalyst, add a small amount of butyl acetate for dilution, and add butyl acetate dropwise at 40°C Diluted trifluorooctyl alcohol, the molar ratio of the two is also 1:1. During the reaction, the cont...
Embodiment 3
[0031] The first step is to add a metered amount of IPDI and DBTDL with a solid content of 0.3wt% into a three-necked flask equipped with a thermometer and a mechanical stirring device as a catalyst, add a small amount of butyl acetate to dilute, and then add an appropriate amount of The molar ratio of the PET3A of the polymerization inhibitor BHT is 1:1. During the reaction, the content of -NCO group was continuously monitored by titration. When the theoretical value was reached, the reaction was stopped to obtain PET3A semi-blocked IPDI, which was sealed and placed in a dry place away from light. The second step is to add a metered amount of IPDI and DBTDL with a solid content of 0.3wt% into a three-necked flask equipped with a thermometer and a mechanical stirring device as a catalyst, add a small amount of butyl acetate for dilution, and add butyl acetate dropwise at 40°C Diluted trifluorooctyl alcohol, the molar ratio of the two is also 1:1. During the reaction, the cont...
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Abstract
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