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Polymer cement waterproof coating

A waterproof coating and polymer technology, applied in the direction of coating, etc., can solve the problems of strength reduction, coating film adhesive strength, tensile strength, water seepage resistance, low temperature flexibility, swelling and softening, etc., to improve tensile strength Strength and elongation, the effect of improving engineering stability and safety factor

Inactive Publication Date: 2014-04-02
CHENGDU JIAXIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, although the performance of most JS waterproof coatings on the market can meet the standard requirements of GB / T 23445-2009 "Polymer Cement Waterproof Coatings", there are different degrees of Poor water resistance, high water absorption, swelling and softening of the coating film after soaking in water, and reduced strength, etc., especially the JS waterproof layer constructed in the toilet, basement and reservoir, due to long-term contact with water or immersion, the coating The adhesive strength, tensile strength, water impermeability, and low temperature flexibility of the membrane will all decrease, which will eventually lead to the failure of the waterproofing project.

Method used

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  • Polymer cement waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In terms of mass percentage, the following components are mixed into a liquid material:

[0029] Pure acrylic emulsion: 80%;

[0030] Sodium hexametaphosphate: 1%;

[0031] Emulsified methyl silicone oil: 0.1%;

[0032] Polyvinyl ester: 5%;

[0033] Ethylene glycol: 5%;

[0034] Sodium pentachlorophenate: 1%;

[0035] Organosiloxane: 1%;

[0036] Water: 6.9%.

[0037] In terms of mass percentage, the following components are mixed into inorganic powder:

[0038] Cement with strength grade 42.5: 50%;

[0039] S95 grade specific surface area ≥ 4000cm 2 / g of finely ground slag powder: 15%;

[0040] Calcium carbonate: 10%;

[0041] Polycarboxylate superplasticizer: 0.5%;

[0042] Instant sodium silicate: 5%;

[0043] Aluminum stearate: 5%;

[0044] Methylcellulose: 0.1%;

[0045] Triethanolamine: 0.1%;

[0046] 70-140 mesh quartz sand: 14.3%.

[0047] The liquid material and inorganic powder of the above formula are mixed uniformly at a mass ratio of 1:1 to...

Embodiment 2

[0049] In terms of mass percentage, the following components are mixed into a liquid material:

[0050] Pure acrylic emulsion: 80%;

[0051] Sodium hexametaphosphate: 0.8%;

[0052] Emulsified methyl silicone oil: 0.08%;

[0053] Polyvinyl ester: 3%;

[0054] Ethylene glycol: 3%;

[0055] Sodium pentachlorophenate: 0.8%;

[0056] Organosiloxane: 1.5%;

[0057] Water: 10.82%.

[0058] In terms of mass percentage, the following components are mixed into inorganic powder:

[0059] Cement with strength grade 42.5: 40%;

[0060] Primary fly ash: 15%;

[0061] Calcium carbonate: 10%;

[0062] Polycarboxylate superplasticizer: 0.4%;

[0063] Instant sodium silicate: 5%;

[0064] Aluminum stearate: 5%;

[0065] Methylcellulose: 0.1%;

[0066] Triethanolamine: 0.1%;

[0067] 70-140 mesh quartz sand: 24.4%;

[0068] The liquid material and inorganic powder of the above formula are mixed uniformly at a mass ratio of 1:1 to obtain the polymer cement waterproof coating.

Embodiment 3

[0070] In terms of mass percentage, the following components are mixed into a liquid material:

[0071] Pure acrylic emulsion: 80%;

[0072] Sodium hexametaphosphate: 1%;

[0073] Emulsified phenylmethyl silicone oil: 0.1%;

[0074] Phosphate: 5%;

[0075] Ethylene glycol ether: 5%;

[0076] Sodium pentachlorophenate: 1%;

[0077] Organosiloxane: 1%;

[0078] Water: 6.9%.

[0079] In terms of mass percentage, the following components are mixed into inorganic powder:

[0080] Cement with strength grade 42.5: 50%;

[0081] Primary fly ash: 15%;

[0082] Calcium carbonate: 10%;

[0083] Polycarboxylate superplasticizer: 0.5%;

[0084] Instant sodium silicate: 5%;

[0085] Aluminum stearate: 5%;

[0086] Polyvinyl alcohol: 0.1%;

[0087] Triethanolamine: 0.1%;

[0088] 70-140 mesh quartz sand: 14.3%;

[0089] The liquid material and inorganic powder of the above formula are mixed uniformly at a mass ratio of 1:1 to obtain the polymer cement waterproof coating.

[0...

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Abstract

The invention discloses a polymer cement waterproof coating which is formed by mixing a liquid material and an inorganic powder material based on a mass ratio of 1:1, wherein the liquid material comprises the following components: 60-80% of polymer emulsion, 0.5-1% of wetting dispersant, 0.05-0.1% of antifoaming agent, 1-5.0% of anti-settling agent, 1-5.0% of coalescing agent, 0.5-1% of mildew-proof preservative, 1-2% of leveling agent and the balance of water; and the inorganic powder material comprises the following components: 35-50% of cement with strength grade of 42.5, 10-15% of admixture, 5-10% of calcium carbonate, 0.1-0.5% of water reducing agent, 1-5% of instant sodium silicate, 1-% of aluminum stearate, 0.05-0.1% of thickening agent, 0.05-0.1% of triethanolamine and the balance of quartz sand. Compared with the traditional JS waterproof coating, the tensile strength, stretch rate, impermeability and secondary impermeability pressure of a film of the polymer cement waterproof coating disclosed by the invention are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a polymer cement waterproof coating. Background technique [0002] Polymer cement waterproof coating (JS waterproof coating) is a major category developed in architectural waterproof coatings in recent years. It is an organic liquid material composed of polyacrylate emulsion, ethylene-vinyl acetate copolymer emulsion and other polymer emulsions and various additives, and inorganic powder composed of cement, quartz sand, inorganic fillers and various admixtures. It is a two-component, water-based architectural waterproof coating made of proportioning and compounding. Its properties belong to organic and inorganic composite waterproof materials. [0003] Polymer cement waterproof coating is a coating with dual characteristics of volatilization curing and reaction curing. The film-forming mechanism is that after the liquid material and the powder material are mixed and...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D7/12
Inventor 钱炳梁勇杨杨杨晓龙王寅
Owner CHENGDU JIAXIN TECH
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