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Preparation method of crosslinked polymer cement waterproof coating

A waterproof coating and polymer technology, which is applied in the field of preparation of cross-linked polymer cement waterproof coating, can solve the problems of low fastness and poor waterproof effect, and achieve the effects of excellent weather resistance, low cost and prolonged age

Inactive Publication Date: 2013-07-03
JIAXING GUANGXING BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a method for preparing a cross-linked polymer cement waterproof coating, which solves the technical problems of poor waterproof effect and low fastness of the polymer cement waterproof coating in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of cross-linked polymer cement waterproof coating, comprising:

[0026] (a) synthesis:

[0027] S1: Mix diacetone acrylamide and butyl acrylate, and then add sodium lauryl polyoxyethylene sulfate for pre-emulsification; the mass ratio of diacetone acrylamide and butyl acrylate is 1:99, dodecyl polyoxyethylene sulfate The amount of sodium oxyethylene sulfate added is 0.5-2% of the mass of diacetone acrylamide.

[0028] S2: Take the above 1 / 3 pre-emulsified monomer and raise the temperature to 60°C, add the initiator ammonium persulfate to carry out the polymerization reaction, then add the remaining pre-emulsified monomer and the initiator to polymerize at 60°C for 20 minutes to obtain the polymer emulsion.

[0029] (b) adding ammonia water and adipic hydrazide to the polymer emulsion in step (a) for neutralization and activation treatment, and the pH is between 5-7.

[0030] (c) Mix the curing agent adipic hydrazide, quartz sand and cement in a ra...

Embodiment 2

[0033] A preparation method of cross-linked polymer cement waterproof coating, comprising:

[0034] (a) synthesis:

[0035] S1: Mix diacetone acrylamide, ethyl acrylate, methyl methacrylate and styrene, then add dodecylbenzenesulfonic acid and OP-20 for pre-emulsification. Among them, the mass ratio of diacetone acrylamide, ethyl acrylate, methyl methacrylate, and styrene is 8:40:20:32; the addition amount of the emulsifier is 0.5-2% of the mass of diacetone acrylamide

[0036] S2: Take the above 2 / 3 pre-emulsified monomers and raise the temperature to 90°C, add the initiator ammonium persulfate for polymerization, then add the remaining pre-emulsified monomers and initiators for 60 minutes to polymerize at 90°C to obtain a polymer emulsion.

[0037] (b) adding ammonia water and adipic hydrazide to the polymer emulsion in step (a) for neutralization and activation treatment, and the pH is between 5-7.

[0038] (c) Mix the curing agent adipic hydrazide, quartz sand and cement...

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Abstract

The invention relates to a preparation method of a crosslinked polymer cement waterproof coating, which comprises the following steps: (a) mixing diacetone acrylamide with other polymerizable acrylic monomers and adding a surfactant for pre-emulsification; taking a part of pre-emulsified monomers, increasing the temperature to 60-90 DEG C, adding an initiator for polymerization reaction and then adding the left pre-emulsified monomers and an initiator within 0.2-1 hour for polymerization reaction at the temperature of 60-90 DEG C to obtain polymer emulsion; (b), adding an alkali agent and adipic dihydrazide into the polymer emulsion in the step (a); and (c), uniformly agitating the neutralized and activated polymer emulsion and a mixed filler during the construction to obtain the crosslinked polymer cement waterproof coating. The preparation method is simple, is low in cost and is suitable for industrial production; and the crosslinked polymer cement waterproof coating prepared by the method has a cement water reducing effect, can improve the cement strength and can be formed at the room temperature.

Description

technical field [0001] The invention relates to the technical field of waterproof paint preparation, in particular to a preparation method of a cross-linked polymer cement waterproof paint. Background technique [0002] At present, the existing polymer cement waterproof coatings on the market are just a simple mixture of ordinary acrylic emulsions without cross-linking function at normal temperature and cement-based coatings. Waterproof layer, so the waterproof effect is poor and the fastness is low. Contents of the invention [0003] The invention proposes a preparation method of a cross-linked polymer cement waterproof coating, which solves the technical problems of poor waterproof effect and low fastness of the polymer cement waterproof coating in the prior art. [0004] Technical scheme of the present invention is realized like this: [0005] A preparation method of cross-linked polymer cement waterproof coating, comprising: [0006] (a) Mix diacetone acrylamide and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B24/26C08F220/18C08F220/58C08F220/14C08F212/08
Inventor 陈家标
Owner JIAXING GUANGXING BUILDING MATERIALS TECH
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