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Polymer cement waterproof paint and preparing method thereof

A waterproof coating and polymer technology, applied in the direction of coating, can solve the problems of low emulsion stability and phase separation, and achieve excellent low-temperature flexibility, waterproof performance, and good mechanical properties.

Inactive Publication Date: 2016-03-09
GUILIN HEXIN WATERPROOF DECORATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the organosilicon compound does not form a whole with the acrylic polymer in the chemical structure, so the stability of the emulsion is not high, and phase separation is easy to occur

Method used

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  • Polymer cement waterproof paint and preparing method thereof
  • Polymer cement waterproof paint and preparing method thereof
  • Polymer cement waterproof paint and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Preparation of acrylate waterproof emulsion:

[0029] 1.1) In parts by weight, take 2 parts of emulsifier (DSB) and 50 parts of water in an emulsification kettle, stir, and add 15 parts of acrylic acid monomer after the emulsifier dissolves (from 10 parts of butyl acrylate and 5 parts of propylene isooctyl ester) to carry out emulsion polymerization, the reaction temperature is 80 ℃, and the reaction time is 30min to obtain a pre-emulsion;

[0030] 1.2) Take 0.2 parts of emulsifier (DSB) and 9 parts of water in the reaction kettle, raise the temperature to 90°C, add 60 parts of pre-emulsion, 0.5 parts of initiator (sodium persulfate) and 2 parts of silane Combined agent KBM-503, heat preservation reaction for 2 hours, then lower the temperature to 75°C and heat preservation reaction for 30 minutes, then lower to room temperature, adjust the pH value of the reactant to 8 with disodium hydrogen phosphate, and filter to obtain an acrylate waterproof emulsion;

[0031] ...

Embodiment 2

[0033] 1) Preparation of acrylate waterproof emulsion:

[0034] 1.1) In parts by weight, take 5 parts of emulsifier (0.5 part of emulsifier OP-10 and 0.5 part of emulsifier DSB) and 70 parts of water in the emulsification kettle, stir, and add after the emulsifier is dissolved 25 parts of acrylic acid monomers (composed of 10 parts of butyl acrylate, 5 parts of propylene isooctyl and 10 parts of methacrylic acid) were emulsion polymerized at a reaction temperature of 65°C and a reaction time of 60 minutes to obtain a pre-emulsion;

[0035] 1.2) Take 1.0 parts of emulsifier (from 0.5 parts of emulsifier OP-10 and 0.5 parts of emulsifier DSB) and 8 parts of water into the reaction kettle, heat up to 85 ° C, add 55 parts of pre-emulsion, 0.3 1 part of initiator (sodium persulfate) and 4 parts of silane coupling agent KBM-503, heat preservation reaction for 2 hours, then lower the temperature to 70°C and heat preservation reaction for 40 minutes, then lower to room temperature, ad...

Embodiment 3

[0038] 1) Preparation of acrylate waterproof emulsion:

[0039] 1.1) By weight, take 8 parts of emulsifier (emulsifier OP-10) and 60 parts of water in the emulsification tank, stir, and add 10 parts of acrylic acid monomer (butyl acrylate) after the emulsifier is dissolved Perform emulsion polymerization, the reaction temperature is 75°C, and the reaction time is 40min to obtain a pre-emulsion;

[0040] 1.2) Take 0.5 parts of emulsifier (emulsifier OP-10) and 10 parts of water in the reactor, heat up to 88 ° C, add 50 parts of pre-emulsion, 0.3 parts of initiator (ammonium persulfate) and 4 1 part of silane coupling agent KBM-503, heat preservation reaction for 1.5h, then lower the temperature to 65°C and heat preservation reaction for 30min, then lower to room temperature, adjust the pH value of the reactant to 8.5 with sodium dihydrogen phosphate, filter to obtain acrylate waterproof emulsion ;

[0041] 2) Take by weighing 100 parts of acrylate waterproof emulsion, 40 part...

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Abstract

The invention discloses polymer cement waterproof paint and a preparing method thereof. The polymer cement waterproof paint is prepared from 100 parts of acrylate waterproof emulsion, 35-55 parts of cement, 35-55 parts of quartz sand, 15-35 parts of heavy calcium carbonate, 10-20 parts of water, 0.3-0.6 part of a defoaming agent and 0.1-0.3 part of preservative. Silane coupling agent KBM-503 organosilicone monomers are adopted to modify acrylate to obtain the acrylate waterproof emulsion. The polymer cement waterproof paint is excellent in low temperature flexibility and water resistance and good in mechanical property.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a polymer cement waterproof coating and a preparation method thereof. Background technique [0002] Polymer cement waterproof coating (JS waterproof coating) is a two-component waterproof coating composed of polymer emulsion (such as acrylate emulsion, EVA emulsion, etc.) and inorganic powder (cement, quartz powder and additives, etc.). The extensibility and water resistance of the polymer coating film also have the advantages of high strength of the hydraulic cementitious material and easy bonding with the wet base, so it is widely used in toilets, kitchens, building exterior walls, sloping tile roofs, and underground projects waterproof. [0003] Since the acrylate emulsion is sensitive to temperature, the low-temperature flexibility of the prepared JS waterproof coating film is relatively poor, and it is difficult to meet the application requirements in the cold climate in northern win...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D133/02C09D7/12C08F220/18C08F120/18C08F220/06
CPCC09D7/61C09D133/02C09D133/08C08F120/18C08F220/06C08F220/18C08K3/26C08K3/36C08K2003/265C08F220/1804C08F220/1808
Inventor 黄志强王继发刘泓铭
Owner GUILIN HEXIN WATERPROOF DECORATION MATERIAL
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