Carboxylic butadiene-styrene latex specially used for cement

A technology of carboxylated styrene-butadiene latex and cement, applied in the field of special carboxylated styrene-butadiene latex for cement, can solve the problems of poor mechanical stability of adhesive force and high water loss rate, so as to improve the adhesive force, reduce water loss and improve the use effect. Effect

Inactive Publication Date: 2016-12-14
枣阳市恒泰化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cement, commonly known as cement, red wool mud, and British clay, is a general term for cementing materials used in civil engineering. According to different cementing properties, it can be divided into hydraulic cement and non-hydraulic cement. Nowadays, the cement loses its overall strength when used. High water content leads to poor overall adhesion and mechanical stability, which greatly reduces the overall use effect of cement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] After the inner cavity of the polymerization kettle is evacuated, 25 parts of butadiene, 30 parts of styrene, 1 part of acrylic acid, 5 parts of carboxylate, 0.05 parts of sulfonate, and 80 parts of soft water are put into the polymerization kettle in turn for polymerization reaction ;During the polymerization reaction, use a stirrer to stir the raw materials in the polymerization tank, raise the temperature in the polymerization tank to 60°C through the heating tube, add 1 part of potassium persulfate, and fully react for 0.5h; use the heating tube Raise the temperature in the polymerization kettle to 65°C, add 0.3 parts of molecular weight modifier and 0.5 parts of emulsifier to the polymerization kettle, and react for 10 minutes; use the built-in temperature sensor in the polymerization kettle to detect the temperature inside the polymerization kettle, when the temperature in the polymerization kettle When it reaches 75°C, degas the polymerization reactants in the pol...

Embodiment 2

[0022] After the inner cavity of the polymerization kettle is evacuated, 60 parts of butadiene, 70 parts of styrene, 5 parts of acrylic acid, 20 parts of carboxylate, 0.5 parts of sulfonate, and 110 parts of soft water are put into the polymerization kettle in turn for polymerization. ;During the polymerization reaction, use a stirrer to stir the raw materials in the polymerization tank, raise the temperature in the polymerization tank to 80°C through the heating tube, add 3 parts of potassium persulfate, and fully react for 1.5h; use the heating tube Raise the temperature in the polymerization kettle to 85°C, add 1 part of molecular weight modifier and 3 parts of emulsifier to the polymerization kettle, and react for 30 minutes; use the built-in temperature sensor in the polymerization kettle to detect the temperature inside the polymerization kettle, when the temperature in the polymerization kettle When it reaches 90°C, use degassing equipment to degas the polymerization rea...

Embodiment 3

[0025] After the inner cavity of the polymerization kettle is evacuated, 42 parts of butadiene, 50 parts of styrene, 3 parts of acrylic acid, 13 parts of carboxylate, 0.28 parts of sulfonate, and 95 parts of soft water are put into the polymerization kettle in turn for polymerization. ; During the polymerization reaction, use a stirrer to stir the raw materials in the polymerization tank, raise the temperature in the polymerization tank to 70°C through the heating tube, add 2 parts of potassium persulfate, and fully react for 1 hour; use the heating tube to The temperature in the polymerization kettle is raised to 75°C, add 0.65 parts of molecular weight modifier and 1.8 parts of emulsifier to the polymerization kettle, and react for 20 minutes; use the built-in temperature sensor in the polymerization kettle to detect the temperature inside the polymerization kettle, when the temperature in the polymerization kettle reaches At 82°C, use degassing equipment to degas the polymer...

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Abstract

The invention discloses carboxylic butadiene-styrene latex specially used for cement. The carboxylic butadiene-styrene latex is prepared from the following raw materials in parts by weight: 25-60 parts of butadiene, 30-70 parts of styrene, 1-5 parts of acrylic acid, 5-20 parts of carboxylate, 0.05-0.5 part of sulfonate, 1-2 parts of a PH regulator, 0.3-1 part of a molecular weight regulator, 0.5-3 parts of an emulsifying agent, 1-3 parts of potassium persulfate and 80-110 parts of soft water, and is prepared by means of emulsion polymerization. The carboxylic butadiene-styrene latex can be added into the cement, and the cohesive force, water gathering property, wear resistance, liquidity, mold forming property as well as mechanical and chemical stability of the cement are greatly improved on the whole by utilizing the high-efficiency film formation strength and cohesive force characteristic of the carboxylic butadiene-styrene latex, so that the water loss of the cement is reduced, the cohesive force, wear resistance, durability, compressive strength as well as mechanical and chemical stability of the cement are greatly enhanced, the carboxylic butadiene-styrene latex is conducive to the long-term use of the cement, and the use effect of the cement is improved.

Description

technical field [0001] The invention relates to the technical field of carboxylated styrene-butadiene latex preparation, in particular to a special carboxylated styrene-butadiene latex for cement. Background technique [0002] Cement, commonly known as cement, red wool mud, and British clay, is a general term for cementing materials used in civil engineering. According to different cementing properties, it can be divided into hydraulic cement and non-hydraulic cement. Nowadays, the cement loses its overall strength when used. High water content leads to poor overall adhesion and mechanical stability, which greatly reduces the overall use effect of cement. Contents of the invention [0003] Based on the technical problems in the background technology, the present invention proposes a special carboxylated styrene-butadiene latex for cement to solve the problems raised in the background technology. [0004] The present invention provides following technical scheme: [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/10C08F236/06C08F220/06C08F2/24C04B24/26
CPCC08F236/10C04B24/2688C08F2/24C08F236/06C08F220/06
Inventor 何发丽
Owner 枣阳市恒泰化工有限公司
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