Graphene oxide composite polycarboxylate water reducer and preparation method thereof

A composite polycarboxylic acid and graphene technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problem of destroying the long-chain molecular structure of water reducing agents, insufficient dispersion of graphene oxide, and affecting water reducing Improve the surface active effect, improve the workability, and improve the water-reducing performance

Active Publication Date: 2017-03-08
武汉市恒星防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still has the problem that the dispersion of graphene oxide is not uniform enough, and the ultrasonic process may destroy the long-chain m

Method used

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  • Graphene oxide composite polycarboxylate water reducer and preparation method thereof
  • Graphene oxide composite polycarboxylate water reducer and preparation method thereof
  • Graphene oxide composite polycarboxylate water reducer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A graphene oxide composite polycarboxylate water reducer, its raw material components are as follows by mass fraction: graphene oxide 0.72% (0.54g), methallyl polyoxyethylene ether 32.27% (24g), acrylic acid 1.94% (1.44g), maleic anhydride 2.64% (1.96g), water 61.81% (45.98g), oxidant ammonium persulfate 0.51% (0.38g) and reducing agent sodium bisulfite 0.11% (0.084g)

[0032] The preparation method of the above-mentioned graphene oxide composite polycarboxylate water reducer, the specific steps are as follows:

[0033] (1) Get 24g methallyl polyoxyethylene ether and be mixed with the aqueous solution of mass concentration 50% and add 0.38g ammonium persulfate; Get 0.54g graphene oxide and be mixed with the aqueous solution of mass concentration 5%; Get 1.44g acrylic acid preparation Get 50% aqueous solution of mass concentration; Get 1.96g maleic anhydride and be mixed with the aqueous solution of 50% mass concentration; Get 0.084g sodium bisulfite and be mixed with th...

Embodiment 2

[0037] A graphene oxide composite polycarboxylate water reducer, its raw material components are as follows by mass fraction: graphene oxide 0.70% (0.54g), methallyl polyoxyethylene ether 31.65% (24g), acrylic acid 2.85% (2.16g), maleic anhydride 2.60% (1.96g), water 61.59% (46.69g), oxidant ammonium persulfate 0.50% (0.38g) and reducing agent sodium bisulfite 0.11% (0.084g).

[0038] The preparation method of the above-mentioned graphene oxide composite polycarboxylate water reducer, the specific steps are as follows:

[0039] (1) Get 24g methallyl polyoxyethylene ether and be mixed with the aqueous solution of mass concentration 50% and add 0.38g ammonium persulfate; Get 0.54g graphene oxide and be mixed with the aqueous solution of mass concentration 5%; Get 2.16g acrylic acid preparation Get 50% aqueous solution of mass concentration; Get 1.96g maleic anhydride and be mixed with the aqueous solution of 50% mass concentration; Get 0.084g sodium bisulfite and be mixed with the...

Embodiment 3

[0043] A graphene oxide composite polycarboxylate water reducer, its raw material components are as follows by mass fraction: graphene oxide 1.2% (1g), methallyl polyoxyethylene ether 28.71% (24g), acrylic acid 1.72% % (1.44g), maleic anhydride 2.35% (1.96g), water 65.47% (54.72g), oxidizing agent ammonium persulfate 0.45% (0.38g) and reducing agent sodium bisulfite 0.1% (0.084g).

[0044] The preparation method of the above-mentioned graphene oxide composite polycarboxylate water reducer, the specific steps are as follows:

[0045] (1) Get 24g methallyl polyoxyethylene ether and be mixed with the aqueous solution of mass concentration 50% and add 0.38g ammonium persulfate; Get 1g graphene oxide and be mixed with the aqueous solution of mass concentration 5%; Get 1.44g acrylic acid and be mixed with An aqueous solution with a mass concentration of 50%; 1.96g maleic anhydride is prepared into an aqueous solution with a mass concentration of 50%; 0.084g sodium bisulfite is prepa...

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Abstract

The invention discloses a graphene oxide composite polycarboxylate water reducer, which is characterized by being prepared from the following raw materials and ingredients in percentage by mass: 0.1 to 2 percent of graphene oxide, 25 to 40 percent of methyl allyl polyethenoxy ether, 1.5 to 4 percent of acrylic acid, 2 to 5.4 percent of maleic anhydride, 50 to 70 percent of water, 0.4 to 1 percent of oxidizing agent of ammonium persulfate and 0.1 to 0.2 percent of reducing agent of sodium hydrosulfite. The monomer methyl allyl polyethenoxy ether, the acrylic acid, the maleic anhydride and the graphene oxide are uniformly mixed and take polymerization reaction under the initiation effect of the oxidizing agent and the reducing agent, so that the graphene oxide composite polycarboxylate water reducer is obtained. The graphene oxide composite polycarboxylate water reducer has the advantages that the dispersibility of the graphene oxide in concrete application can be effectively improved; under the condition of achieving the same intensity improving effect, the consumption of the graphene oxide in the concrete application can be reduced; the mechanical property of concrete is further improved.

Description

technical field [0001] The invention relates to a graphene oxide composite polycarboxylate water reducer and a preparation method thereof, belonging to the field of chemical industry. Background technique [0002] High-performance concrete that resists harsh environments or ultra-high strength is required in some constructions with special requirements, such as high-rise buildings, underground engineering, long-span bridges, and marine facilities. The construction of these concrete projects is difficult, the use environment is harsh, and maintenance is difficult. Therefore, the concrete is required not only to have good construction performance, but also to avoid defects during pouring, and to have good durability and long service life. As a chemical admixture in the concrete preparation process, polycarboxylate superplasticizer has greatly promoted the high performance of concrete. [0003] Polycarboxylate superplasticizer is a long-chain polymer, which is produced by poly...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F222/06C08F220/06C08F4/40C04B24/32C01B32/198C04B103/30
CPCC04B40/0039C04B2103/302C08F4/40C08F283/065C08F222/06C08F220/06C04B24/32C04B14/024
Inventor 张芳陈亚兵
Owner 武汉市恒星防水材料有限公司
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