Preparation method of emulsion type adhesion promoter for polyolefin plastics
An adhesion promoter, emulsion-type technology, applied in the coating and other directions, can solve the problems of difficult process control, harsh emulsion preparation conditions, etc., to avoid poor compatibility, reduce product costs, and reduce emissions.
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Embodiment 1
[0017] First, add 8 parts of CPP, 32 parts of xylene, 1 part of sulfonated castor oil and 2 parts of SDS into the reaction kettle according to the parts by mass, raise the temperature to 60°C, stir and mix evenly to obtain a mixed solution; Add 57 parts of distilled water to the solution, stir and keep warm for 3 hours after the dropwise addition; finally, cool the mixture in the kettle to room temperature, then add ammonia water to it, adjust the pH of the emulsion to 8-9, and obtain the emulsion-type adhesion promoter.
Embodiment 2
[0019] First, add 6 parts of chlorinated polyethylene, 34 parts of mixed solvent of butyl acetate and xylene, 0.9 parts of sulfonated castor oil and 1.8 parts of SDS into the reaction kettle according to the parts by mass, raise the temperature to 70°C, stir and mix evenly to obtain Mix the solution; then, add 57.3 parts of distilled water to the mixed solution under stirring, and then stir and keep warm for 2 hours after the dropwise addition; finally, cool the mixture in the kettle to room temperature, and then add diethylamine to it to adjust the pH of the emulsion to 8~ 9. The emulsion-type adhesion promoter is obtained.
Embodiment 3
[0021] First, add 12 parts of chlorinated ethylene-vinyl acetate copolymer, 30 parts of mixed solvent of xylene and toluene, 1.12 parts of sulfonated castor oil and 2.24 parts of SDS into the reactor according to the parts by mass, raise the temperature to 70°C, stir and mix Obtain a mixed solution evenly; then, add 54.64 parts of distilled water to the mixed solution under stirring, and then stir and keep warm for 1 hour after the dropwise addition; finally, cool the mixture in the kettle to room temperature, and then add triethylamine to it to adjust the pH of the emulsion to 8 ~9, the emulsion-type adhesion promoter is obtained.
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