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Polymer cement water-proof coating and preparation method thereof

A waterproof coating and polymer technology, applied in the field of chemical building materials, can solve problems such as dust generation, affecting the health of builders, and polluting the environment, and achieve the effects of good environmental protection, good extension performance, and good compatibility

Active Publication Date: 2015-02-11
MEICHAO GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The powder in the polymer cement waterproof coating will generate dust during production, packaging, storage and use, which will pollute the environment and affect the health of the builders

Method used

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  • Polymer cement water-proof coating and preparation method thereof

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preparation example Construction

[0056] The present invention also discloses a preparation method of the polymer cement waterproof coating described in the above technical solution, comprising the following steps:

[0057] (A) Mix and stir 85-95wt% polymer emulsion, 0.5-1.0wt% defoamer, 0.02-0.1wt% preservative and 4-14wt% water to obtain a liquid material;

[0058] Add 0.05-1.6wt% dust suppressant heated and atomized to the mixture of 30-50wt% cement, 39-50wt% quartz sand and 10-20wt% heavy calcium to obtain powder; the dust suppressant is C2~ One or more of C8 diols, oligomers of diols, and esters formed by oligomers of diols;

[0059] The degree of polymerization of the oligomers of dihydric alcohols is less than 10;

[0060] (B) Mix the liquid material and the powder material according to the mass ratio of 1:1.0-2.5 to obtain the polymer cement waterproof coating.

[0061] In the present invention, liquid material and powder material are prepared respectively at first. In the process of preparing the l...

Embodiment 1

[0067] Add 1000Kg of styrene-acrylic emulsion to the mixing tank, then add 150Kg of water, 10Kg of defoamer, and 0.5Kg of preservative in turn under low-speed stirring. Stir for 20 minutes, filter with a 50-mesh filter, that is, the liquid material, put it in a plastic bucket and seal it for later use.

[0068] Add 100Kg of 42.5 ordinary Portland cement, 125Kg of quartz sand, and 30Kg of heavy calcium into the powder mixer in turn, stir for 4 minutes, and mix well; heat 3Kg of dust suppressant dipropylene glycol dibenzoate to 75°C, put In the atomizer; in the state of stirring, the dust suppressant is added to the mixture in the form of atomization, so that the liquid and powder are fully mixed, that is, the powder. Pack airtightly in a plastic bag. Mix the liquid material and powder evenly at a weight ratio of 1:2.2, and apply it on the PTFE mold twice by scraping. The dry film thickness is controlled at (1.5±0.2) mm, cured for 4 days under standard conditions, placed in an...

Embodiment 2

[0080] Add 1000Kg of acrylic emulsion to the mixing tank, and add in order under low-speed stirring, 70Kg of water, 6Kg of defoamer, and 0.5Kg of preservative. Stir for 20 minutes, filter with a 50-mesh filter, that is, the liquid material, put it in a plastic bucket and seal it for later use.

[0081] Add 100Kg of 42.5 ordinary Portland cement, 120Kg of quartz sand, and 30Kg of heavy calcium into the powder mixer in turn, stir for 4 minutes, and mix well; add dust suppressants diethylene glycol dibenzoate and dipropylene glycol dibenzoate Heat 3Kg of the ester mixture (weight ratio 50 / 50) to 75°C and put it into the atomizer; while stirring, add the dust suppressant to the mixture in the form of atomization to make the liquid and powder fully Mixed, that is, powder. Pack airtightly in a plastic bag.

[0082] Mix the liquid material and the powder material uniformly at a weight ratio of 1:1.2 to obtain a polymer cement waterproof coating.

[0083] The method of Example 1 wa...

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Abstract

The invention provides a polymer cement waterproof coating. The polymer cement waterproof coating comprises a liquid material and a powder material in a mass ratio of 1: (1.0-2.5), wherein the liquid material comprises the following components in percentage by weight: 85-95wt% of polymer emulsion, 0.5-1.0wt% of a defoaming agent, 0.02-0.1wt% of a preservative and 4-14wt% of water; the powder material comprises the following components in percentage by weight: 30-50wt% of cement, 39-50wt% of quartz sand, 10-20wt% of heavy calcium carbonate and 0.05-1.6wt% of a dust suppressant, wherein the dust suppressant is one or more of C2-C8 dihydric alcohol, oligomers of dihydric alcohol and esters of the oligomers of dihydric alcohol and the degrees of polymerization of the oligomers of dihydric alcohol are less than 10. The polymer cement waterproof coating disclosed by the invention has the advantages of good environmental friendliness and good strength and elongation properties and no dust is generated during production, transportation, storage and use of the polymer cement waterproof coating.

Description

technical field [0001] The invention relates to the field of chemical building materials, in particular to a polymer cement waterproof coating and a preparation method thereof. Background technique [0002] Polymer cement waterproof coating is a two-component reactive volatile waterproof coating composed of polymer emulsion-based liquid material and powder material composed of cement, quartz sand, heavy calcium and additives. Because it has both the rigidity and good adhesion of cement-based materials, as well as the flexibility and crack resistance of polymer emulsions, it is welcomed and praised by the majority of designers, especially builders. The formulation and implementation of the industry standard JC / T864 and the national standard GB / T23445 "Polymer Cement Waterproof Coatings" have played a positive role in ensuring the quality and promotion of polymer cement waterproof coatings. [0003] The promotion and application of polymer cement waterproof coatings in our co...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/04
Inventor 赵守佳张经甫田翠杨宝银
Owner MEICHAO GROUP
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