High polymer waterproof coating

A polymer waterproofing and coating technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of low elongation at break, poor resistance to high and low temperature changes, etc.

Inactive Publication Date: 2012-10-03
TIANCHANG JULONG TRAVEL PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waterproof coating used for building waterproofing of the invention has the advantages of excellent aging resistance, strong adhesion, good material extensibility, good construction, good waterproof integrity, mildew resistance, excellent anti-algae performance, and environmental protection. The disadvantages are Poor resistance to high and low temperature changes, low elongation at break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Raw materials are prepared according to the following parts by weight: polyurethane emulsion 3, hydroxylated polydiorganosiloxane 0.1, polyvinyl alcohol 4;

[0046] Heat the polyurethane emulsion to 60°C;

[0047] Add the reactive polysiloxane compound and stir for 5 hours at a stirring rate of 100 rpm;

[0048] Add polyvinyl alcohol and stir at a high speed of 500 rpm for 60 min, and cool to room temperature.

[0049] The product that present embodiment obtains is carried out performance test, and result is as follows:

[0050] Adhesive force: 0.51 (standard ≥ 0.2);

[0051] Tensile force: 3.83 (standard ≥ 1.0);

[0052] Elongation at break at room temperature (20°C): 495 (standard ≥ 200);

[0053] Elongation at break at -10°C: 312 (standard ≥ 100);

[0054] Elongation at break at 50°C: 365 (standard ≥ 150);

[0055] Elongation at break after ultraviolet irradiation: 354 (standard ≥ 150).

Embodiment 2

[0057] Raw materials are prepared in the following parts by weight: polyurethane emulsion 5, hydroxylated polydiorganosiloxane 2, polyvinyl alcohol 5;

[0058] Heat the polyurethane emulsion to 170°C;

[0059] Add the reactive polysiloxane compound and stir for 1 hour at a stirring rate of 300 rpm;

[0060] Add polyvinyl alcohol and stir at a high speed of 900 rpm for 30 min, and cool to room temperature.

[0061] The product that present embodiment obtains is carried out performance test, and result is as follows:

[0062] Adhesive force: 0.53 (standard ≥ 0.2);

[0063] Tensile force: 3.85 (standard ≥ 1.0);

[0064] Elongation at break at room temperature (20°C): 477 (standard ≥ 200);

[0065] Elongation at break at -10°C: 325 (standard ≥ 100);

[0066] Elongation at break at 50°C: 341 (standard ≥ 150);

[0067]Elongation at break after ultraviolet irradiation: 339 (standard ≥ 150).

Embodiment 3

[0069] Raw materials are prepared in parts by weight as follows: polyurethane emulsion 10, hydroxylated polydiorganosiloxane 0.5, polyvinyl alcohol 6;

[0070] Heat the polyurethane emulsion to 80°C;

[0071] Add the reactive polysiloxane compound and stir for 1.5 hours at a stirring rate of 150 rpm;

[0072] Add polyvinyl alcohol and stir at a high speed of 600 rpm for 35 min, and cool to room temperature.

[0073] The product that present embodiment obtains is carried out performance test, and result is as follows:

[0074] Adhesive force: 0.49 (standard ≥ 0.2);

[0075] Tensile force: 3.90 (standard ≥ 1.0);

[0076] Elongation at break at room temperature (20°C): 464 (standard ≥ 200);

[0077] Elongation at break at -10°C: 319 (standard ≥ 100);

[0078] Elongation at break at 50°C: 353 (standard ≥ 150);

[0079] Elongation at break after ultraviolet irradiation: 346 (standard ≥ 150).

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Abstract

The invention relates to a waterproof coating, in particular to a high polymer waterproof coating applied to building industry and a preparation method thereof. The high polymer waterproof coating comprises the following components in parts by weight: 3-20 parts of polyurethane, 0.1-5 parts of reactive polysiloxane compounds and 4-8 parts of polyvinyl alcohol, and further comprises the following components in parts by weight: 0.5-3 parts of high-melting-point polyethylene wax emulsion, 0.1-2 parts of tackifiers, 0.2-2 parts of nonionic surfactants and a defoaming agent. The high polymer waterproof coating, provided by the invention, has the characteristics of excellent high temperature resistance, low temperature resistance and shock chilling and shock heating change, good ductility and elongation at break in a wide temperature range, strong adhesive force, corrosion resistance, ageing resistance, safety and environmental friendliness, and is suitable for being coated on the surfaces of multiple substrates in building industry.

Description

technical field [0001] The invention relates to a waterproof paint, in particular to a polymer waterproof paint suitable for application in the construction industry and a preparation method thereof. Background technique [0002] The waterproof coating used in the construction industry is generally a viscous liquid polymer synthetic material with no fixed shape at room temperature. After coating, it will form a waterproof film on the surface of the base layer after solvent volatilization or water evaporation or reaction curing. At present, the waterproof materials used in the construction industry are generally divided into flexible waterproof materials including waterproof membranes, waterproof coatings, sealing ointments, etc., and rigid waterproof materials based on cement substrates, adding waterproofing agents and other additives. Although there are many types, they generally have disadvantages such as poor physical and mechanical properties, short service life, too lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D151/08C09D129/04C09D183/06C09D7/12C09D7/14C09D7/80
Inventor 管伟
Owner TIANCHANG JULONG TRAVEL PAINT
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