Preparation method of building rubber powder
A technology for building rubber powder and rubber powder, applied in the field of construction, can solve the problems of general water resistance, inability to use large-scale building materials, low initial viscosity of building rubber powder, etc., and achieve the effect of improving bonding strength and water resistance.
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Embodiment 1
[0033] The waterproof emulsion is: SD-528 silicone acrylic emulsion
[0034] The defoamer is: polyoxyethylene polyoxypropanolamine ether
[0035] The thickener is: hydroxypropyl methylcellulose
[0036] Preparation of graft polymer:
[0037] In parts by weight, mix 55 parts of polyvinyl alcohol and 220 parts of dichloromethane, stir and disperse to form a glue, place in a distillation flask with a stirrer, add 8 parts of dimethylaminopyridine and 6 parts of 3,4 -Dihydroxybenzoic acid, stirred and reacted for 10 minutes under ice-water bath conditions, continued to add 25 parts of N,N-dicyclohexylcarbodiimide, continued to stir, reacted at room temperature for 20 hours, filtered, removed the filter residue, and heated to 85 °C, distilled for 2 hours, poured the resulting distillate into n-hexane, crystallized at room temperature, filtered and removed the filtrate to obtain a grafted polymer, and set aside;
[0038] Preparation of catechol oxidase solution:
[0039] Cut the ...
Embodiment 2
[0046] The waterproof emulsion is: SD-568 fluorine acrylic emulsion
[0047] The defoamer is: polyoxypropylene polyoxyethylene glyceryl ether
[0048] Thickener: sodium carboxymethyl cellulose
[0049] Preparation of graft polymer:
[0050] In parts by weight, 57 parts of polyvinyl alcohol and 230 parts of dichloromethane are mixed, stirred and dispersed to form a glue, placed in a distillation flask with a stirrer, and then added with 9 parts of dimethylaminopyridine and 7 parts of 3,4 -Dihydroxybenzoic acid, stirred and reacted for 12 minutes under ice-water bath conditions, continued to add 27 parts of N,N-dicyclohexylcarbodiimide, continued to stir, reacted at room temperature for 22 hours, filtered, removed the filter residue, and heated to 90 ℃, distilled for 2.5h, pour the obtained distillate into n-hexane, crystallize at room temperature, filter and remove the filtrate to obtain graft polymer, set aside;
[0051] Preparation of catechol oxidase solution:
[0052] C...
Embodiment 3
[0059] The waterproof emulsion is: SD-5681 fluorosilicone emulsion
[0060] The defoamer is: polyoxyethylene polyoxypropanolamine ether
[0061] Thickener: Hydroxyethyl Cellulose
[0062] Preparation of graft polymer:
[0063] In parts by weight, mix 60 parts of polyvinyl alcohol and 240 parts of dichloromethane, stir and disperse to form a glue, place in a distillation flask with a stirrer, add 10 parts of dimethylaminopyridine and 8 parts of 3,4 -Dihydroxybenzoic acid, stirred and reacted for 15 minutes under ice-water bath conditions, continued to add 8 parts of N,N-dicyclohexylcarbodiimide, continued to stir, reacted at room temperature for 24 hours, filtered, removed the filter residue, and heated to 95 °C, distilled for 3 hours, poured the obtained distillate into n-hexane, crystallized at room temperature, filtered and removed the filtrate to obtain a grafted polymer, and set aside;
[0064] Preparation of catechol oxidase solution:
[0065] Cut the potatoes into pi...
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Abstract
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