Polyurethane primer and preparation method thereof
A polyurethane primer and polyurethane technology, applied in the field of paint, can solve the problems of easy prickly heat bubbles, poor coating construction performance, slow drying speed, etc., and achieve good anti prickly heat bubble performance, good low temperature drying, good flexibility. Effect
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[0068] The polyurethane primer provided by the present invention uses the above components as raw materials respectively, and its preparation method can adopt the preparation method of two-component paint well known to those skilled in the art. Correspondingly, the present invention also provides a kind of preparation method of polyurethane primer, comprises the following steps:
[0069] Mix rice bran oil-type alkyd resin, zinc stearate, talcum powder, first solvent, anti-settling agent, defoamer, leveling agent and drier, and disperse evenly to form component A; toluene diisocyanate three Mix polymer, toluene diisocyanate curing agent and polyurethane grade solvent to get component B; mix component A and component B to get polyurethane primer.
[0070] The rice bran oil type alkyd resin, zinc stearate, talcum powder, first solvent, anti-settling agent, defoamer, leveling agent, drier, toluene diisocyanate trimer, toluene diisocyanate curing agent and The weight ratio of poly...
Embodiment 1
[0074] Component A formula:
[0075] 65 grams of rice bran oil-type alkyd resin;
[0076] 5 grams of zinc stearate of the model BT1817 produced by the Bailihe Group;
[0077] 10 grams of talc powder of TP-1250 produced by Guangxi Guilin Guihua Superfine Powder Material Co., Ltd.;
[0078] 13 grams of xylene produced by Maoming Petrochemical;
[0079] 5 grams of butyl acetate produced by Maoming Petrochemical;
[0080] Anti-sedimentation agent SD-1 bentonite 0.5 g;
[0081] 0.5 grams of BYK141 foam-breaking polysiloxane compound of defoamer Germany BYK company;
[0082] 0.3 grams of BYK358 polyacrylate leveling agent from BYK Company in Germany;
[0083] T12 organotin drier 0.3g.
[0084] making process:
[0085] Add alkyd resin, xylene and butyl acetate into the reaction kettle in turn, and then add defoamer and leveling agent in order to disperse at medium speed evenly and thickly, add talcum powder, zinc stearate and anti-sedimentation agent after dispersing at medium...
Embodiment 2
[0093] Component A formula:
[0094] 60 grams of rice bran oil-type alkyd resin;
[0095] 5 grams of zinc stearate of the model BT1817 produced by the Bailihe Group;
[0096] 15 grams of talc powder of TP-1250 produced by Guangxi Guilin Guihua Superfine Powder Material Co., Ltd.;
[0097] 13 grams of xylene produced by Maoming Petrochemical;
[0098] 5 grams of butyl acetate produced by Maoming Petrochemical;
[0099] Anti-sedimentation agent SD-1 bentonite 0.5 g;
[0100] 0.5 grams of BYK141 foam-breaking polysiloxane compound of defoamer Germany BYK company;
[0101] 0.3 grams of BYK358 polyacrylate leveling agent from BYK Company in Germany;
[0102] The model ZH300 organic amine drier produced by Taizhou Jianye Chemical Co., Ltd. was 0.3 grams.
[0103] making process:
[0104] Add alkyd resin, xylene and butyl acetate into the reaction kettle in turn, and then add defoamer and leveling agent in order to disperse at medium speed evenly and thickly, add talcum powder...
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