Acrylic carboxyl polyurethane powder coating for ceramic
A technology of acrylic carboxyl and polyurethane powder, applied in the field of coatings, can solve the problems of pollution durability, non-hardness, low gloss, etc., and achieve the effect of good durability
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Embodiment 1
[0015] A kind of acrylic acid carboxyl polyurethane powder coating for ceramics, its raw material ratio by weight is as follows: 50 parts of 1,6-hexanediol; 40 parts of dehydrated castor oil; 0.5 part of dibutyltin dilaurate; 10 parts of glycerin; cyclohexyl 55 parts of isocyanate; 0.01 part of lithium hydroxide; 5 parts of benzophenone; 20 parts of linseed oil; 30 parts of hexahydrophthalic anhydride; 40 parts of dimethyl ester; 5 parts of toluene diisocyanate; 100 parts of methyl methacrylate.
[0016] Put the above raw materials into the reaction kettle, raise the temperature to 120°C, keep warm for 2 hours and mix evenly, after cooling, pulverize with a pulverizer, and sieve with a 100mg sieve to prepare the coating.
[0017] Product density 135g / cm 3 , no foaming or falling off after soaking in water for 60 days; tensile strength 20MPa, Shore hardness 40, no abnormality after soaking in 5% hydrochloric acid solution for 40 days; adhesion level 2, impact strength 550N / cm,...
Embodiment 2
[0019] A kind of acrylic acid carboxyl polyurethane powder coating for ceramics, its raw material ratio is as follows in parts by weight: 60 parts of 1,6-hexanediol; 50 parts of dehydrated castor oil; 1.5 parts of dibutyltin dilaurate; 20 parts of glycerin; cyclohexyl 65 parts of isocyanate; 0.05 parts of lithium hydroxide; 15 parts of azodicyanovaleric acid initiator; 30 parts of linseed oil; 40 parts of hexahydrophthalic anhydride; 60 parts of dimethyl adipate; 15 parts of toluene diisocyanate; 100 parts of methyl methacrylate.
[0020] Put the above raw materials into the reaction kettle, raise the temperature to 130°C, keep warm for 4 hours and mix evenly, after cooling, pulverize with a pulverizer, and sieve with a 140mg sieve to prepare the coating.
[0021] Product density 145g / cm 3 , no foaming or falling off after soaking in water for 65 days; tensile strength 25MPa, Shore hardness 50, no abnormality after soaking in 5% hydrochloric acid solution for 50 days; adhesio...
Embodiment 3
[0023] A kind of acrylic acid carboxyl polyurethane powder coating for ceramics, its raw material ratio is as follows in parts by weight: 55 parts of 1,6-hexanediol; 45 parts of dehydrated castor oil; 1 part of dibutyltin dilaurate; 15 parts of glycerin; cyclohexyl 60 parts of isocyanate; 0.03 parts of lithium hydroxide; 10 parts of azodicyanovaleric acid initiator; 25 parts of linseed oil; 35 parts of hexahydrophthalic anhydride; 50 parts of dimethyl adipate; 10 parts of toluene diisocyanate; 100 parts of methyl methacrylate.
[0024] Put the above raw materials into the reaction kettle, raise the temperature to 125°C, keep warm for 3 hours and mix evenly, after cooling, pulverize with a pulverizer, and sieve with a 120mg sieve to prepare the coating.
[0025] Product density 155g / cm 3 , no foaming or falling off after soaking in water for 70 days; tensile strength 30MPa, Shore hardness 60, no abnormality after soaking in 5% hydrochloric acid solution for 60 days; adhesion l...
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