Silane modified graphene oxide modified polycarboxylic acid reducer and preparation method thereof
A technology of graphene chemistry and silane modification, which is applied in the field of polycarboxylate water reducer and its preparation, can solve the failure of the interaction between graphene oxide and polycarboxylate water reducer, and affect the uniform dispersion and effective effect of graphene oxide , hinder the uniform dispersion of graphene oxide, etc., to achieve super adsorption-dispersibility, improve the effect of enhancement and optimization, and the effect of low total porosity
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[0028] Example 1
[0029] A silane-modified graphene oxide chemically modified polycarboxylate water-reducing agent is prepared from the following components in parts by weight: 100 parts of isobutenol polyoxyethylene ether, γ-methacryloyloxypropyl trimethoxy 12 parts of monosilane, 5 parts of graphene oxide, 2 parts of ammonium persulfate, 1.0 part of hydrogen peroxide, 0.5 part of L-ascorbic acid, and 0.8 part of mercaptopropionic acid.
[0030] The concrete preparation method of above-mentioned water reducing agent is as follows:
[0031] Mix γ-methacryloyloxypropyltrimethoxysilane with 50% ethanol solution uniformly, stir magnetically for 1 hour in a water bath at 30-40°C until γ-methacryloyloxypropyltrimethoxysilane The methoxysilane in the base silane was completely hydrolyzed into silanol groups; graphene oxide was added to the mixed solution, and ultrasonically dispersed for 1 h until the graphene oxide was uniformly dispersed; the mixed solution was magnetically stir...
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[0032] Example 2
[0033] An anti-sulfate competitive adsorption type silane-modified polycarboxylate water reducer is prepared from the following components in parts by weight: 100 parts of isobutenol polyoxyethylene ether, γ-methacryloyloxypropyltrimethoxy 15 parts of base silane, 4 parts of graphene oxide, 0.5 part of ammonium persulfate, 1.2 part of hydrogen peroxide, 1.0 part of L-ascorbic acid, and 0.8 part of mercaptopropionic acid.
[0034] The concrete preparation method of above-mentioned water reducing agent is as follows:
[0035] Mix γ-methacryloyloxypropyltrimethoxysilane with 50% ethanol solution uniformly, stir magnetically for 1 hour in a water bath at 30-40°C until γ-methacryloyloxypropyltrimethoxysilane The methoxysilane in the base silane was completely hydrolyzed into silanol groups; graphene oxide was added to the mixed solution, and ultrasonically dispersed for 1 h until the graphene oxide was uniformly dispersed; the mixed solution was magnetically sti...
Example Embodiment
[0036] Example 3
[0037] An anti-sulfate competition adsorption type silane-modified polycarboxylate water reducer is prepared from the following components in parts by weight: 100 parts of isobutenol polyoxyethylene ether, γ-methacryloyloxypropyl trimeth 14 parts of oxysilane, 4.5 parts of graphene oxide, 1.0 parts of ammonium persulfate, 1.1 parts of hydrogen peroxide, 0.9 parts of L-ascorbic acid, and 1.3 parts of mercaptopropionic acid.
[0038] The concrete preparation method of above-mentioned water reducing agent is as follows:
[0039]Mix γ-methacryloyloxypropyltrimethoxysilane with 50% ethanol solution uniformly, stir magnetically for 1 hour in a water bath at 30-40°C until γ-methacryloyloxypropyltrimethoxysilane The methoxysilane in the base silane was completely hydrolyzed into silanol groups; graphene oxide was added to the mixed solution, and ultrasonically dispersed for 1 h until the graphene oxide was uniformly dispersed; the mixed solution was magnetically st...
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