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Two-component polyurethane waterproof coating and preparation method thereof

A two-component polyurethane and waterproof coating technology, used in the field of architectural waterproof coatings, can solve the problems of low temperature flexibility, large influence of toluene diisocyanate volatility, poor heat resistance, etc., and achieves good construction performance, compact structure, The effect of less volatile gas

Inactive Publication Date: 2018-04-10
洛阳双瑞防腐工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention patent application specification with the application number 2008101826973 discloses a two-component polyurethane waterproof coating, which is compounded and used with various polyether resins, and is capped with amino-terminated polyether resins to control the polymerization process and obtain performance Excellent component A, by adding a vulcanizing agent to component B to carry out vulcanization enhancement reaction, the strength of component B is greatly improved. The coating has the advantages of high solid content, high strength and high elongation at break, but it is gentle Low resistance, poor heat resistance, and the volatility of toluene diisocyanate in component A is greatly affected by vapor pressure

Method used

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  • Two-component polyurethane waterproof coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A composite modified two-component polyurethane waterproof coating, which is made by mixing component A and component B according to the mass ratio of 1:1.5; wherein component A and component B are respectively made of the following raw materials:

[0028] Component A: polyether diol 40kg, polyether triol 45kg, diphenylmethane diisocyanate 30kg, organic montmorillonite 1.725kg, water glass 1.725kg;

[0029] Component B: water 15kg; dispersant (BASF-4585) 0.5kg, antioxidant (TDS-115) 0.5kg, CO 2 Absorbent (calcium hydroxide) 0.3kg, plasticizer (S-5408) 3kg, leveling agent (AMS-2020) 0.2kg, filler 30kg (including talcum powder 20kg, heavy calcium carbonate 10kg), pigment 0.2kg ( Among them, carbon black 0.06kg, phthalocyanine blue 0.02kg, medium yellow 0.12kg), defoamer (A10) 0.3kg;

[0030] The preparation method of described two-component polyurethane waterproof coating comprises the following steps:

[0031] Step 1, prepare component A and component B respectively: ...

Embodiment 2

[0037] A composite modified two-component polyurethane waterproof coating, which is made by mixing component A and component B according to the mass ratio of 1:1.2, wherein component A and component B are respectively made of the following raw materials:

[0038] Component A: polyether diol 45kg, polyether triol 40kg, diphenylmethane diisocyanate 50kg, organic montmorillonite 2.025kg, water glass 2.025kg;

[0039] Component B: water 19kg; dispersant (SN-5040) 0.8kg, antioxidant (JY-1076) 1.5kg, CO 2Absorbent (calcium hydroxide) 0.8kg, plasticizer (S-5408) 9kg, leveling agent (BYK-345) 0.5kg, filler 50kg (including talcum powder 35kg, light calcium carbonate 15kg), pigment 0.6kg ( Among them, carbon black 0.20kg, iron oxide red 0.08kg, medium yellow 0.32kg), defoamer (A10) 1.0kg;

[0040] The preparation method is the same as in Example 1; the prepared coating is gray, and the main technical indicators of the coating are shown in Table 1.

Embodiment 3

[0042] A composite modified two-component polyurethane waterproof coating, which is made by mixing component A and component B according to the mass ratio of 1:1.2, wherein component A and component B are respectively made of the following raw materials:

[0043] Component A: polyether diol 50kg, polyether triol 50kg, diphenylmethane diisocyanate 60kg, organic montmorillonite 2.4kg, water glass 2.4kg;

[0044] Component B: water 17kg; dispersant (BASF-4585) 0.6kg, antioxidant (JY-1135) 1.0kg, CO 2 Absorbent (calcium hydroxide) 0.7kg, plasticizer (S-5408) 8kg, leveling agent (BYK-345) 0.4kg, filler 45kg (including talcum powder 30kg, light calcium carbonate 15kg), pigment 0.7kg ( Among them, carbon black 0.20kg, phthalocyanine blue 0.10kg, medium yellow 0.40kg), defoamer (A10) 0.8kg;

[0045] The preparation method is the same as in Example 1; the prepared coating is gray, and the main technical indicators of the coating are shown in Table 1.

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Abstract

The invention relates to a two-component polyurethane waterproof coating. The two-component polyurethane waterproof coating is prepared by mixing a component A and a component B in a mass ratio of 1:1to 1.5; the component A is mainly made of, by mass, 40 to 100 parts of polyether polyol, 30 to 60 parts of isocyanate and 0.7 to 8 parts of modifier; the component B is mainly made of, by mass, 15 to20 parts of water, 0.5 to 1 parts of dispersant, 0.5 to 2 parts of antioxidant, 0.1 to 1 part of CO2 absorbent, 3 to 10 parts of plasticizer, 0.1 to 1 part of leveling agent, 30 to 55 parts of fillers and 0.1 to 1.5 parts of defoaming agent. The polyurethane waterproof coating has no addition of organic solvents and no pollution to the environment, is harmless to the health of staff in productionand construction, and has excellent tensile strength, elongation at break, tear strength, flexibility at low temperature and heat resistance; a paint film is less affected by the humidity of the environment and can be quickly cured, and the construction performance is good.

Description

technical field [0001] The invention relates to the technical field of architectural waterproof coatings, in particular to a two-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproof coating has the characteristics of high film elasticity, good extensibility, good chemical resistance, good heat and aging resistance, excellent bonding performance, convenient construction, etc., and is widely used in the construction waterproof industry. Existing polyurethane waterproof coatings usually use lead or tin catalysts in the polymerization and curing process, and the harmful components of these catalysts are easy to diffuse into the water and threaten human health. [0003] The invention patent application specification with the application number 2016112237375 discloses a non-curing polyurethane waterproof coating and its preparation method. The product of this invention always maintains a paste state after...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/62C09D7/61C08G18/48C08G18/76
CPCC09D175/08C08G18/4812C08G18/7671C08K2003/2206C08K2003/265C08K2201/014C08L2201/08C08L83/04C08K13/06C08K3/346C08K3/34C08K3/26C08K3/22
Inventor 刘杰苏松峰田军军胡思堑刘改利
Owner 洛阳双瑞防腐工程技术有限公司
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