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Polymeric environmentally-friendly waterproof polyurethane coating for waterproof parts of buildings

A polyurethane waterproof and building waterproof technology, applied in the field of coatings, can solve problems such as air pollution, achieve the effects of lowering roof and indoor temperature, excellent physical and mechanical properties, and strong adhesion

Inactive Publication Date: 2018-12-18
四川杨氏达防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyurethane waterproof coatings first appeared in countries such as Europe and the United States, and domestic research in this area began in the 1970s. Its appearance made up for the shortage of asphalt waterproof coatings and coiled materials. However, with the development of polyurethane waterproof coatings, in the pursuit of While ignoring the high performance, some volatile organic compounds in the product will harm the human body and pollute the atmosphere. With the emergence of these problems, it is necessary to develop a product that maintains high performance, is conducive to environmental protection, and reduces harm to the human body. Polyurethane waterproof coating with the advantages of low cost, convenient construction, etc.

Method used

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  • Polymeric environmentally-friendly waterproof polyurethane coating for waterproof parts of buildings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] By weight, 15 parts of polyether 2000N, 10 parts of polyether 330N, 1 part of liquid modifier, 0.2 parts of dispersant, 0.2 parts of defoamer, 20 parts of talcum powder, 5 parts of kaolin, 15 parts of heavy calcium, nano TiO 2 Add 5 parts into a closed reaction kettle, mix and heat through high-speed stirring, dehydrate under reduced pressure at 120°C and 0.06Mpa for 180min, make the moisture content in the reaction kettle ≤0.02%, cool down to 75°C-80°C, add 4 parts of MDI , react at constant temperature at 80°C for 120 minutes, add 0.06 parts of catalyst, and stop the reaction after 60 minutes of reaction. After the reaction, add 1 part of latent curing agent, 0.2 parts of antioxidant and 1 part of anti-settling agent under high-speed stirring state, and keep warm Stir for 60 minutes, and finally drop to below 40°C and discharge.

Embodiment 2

[0027] 20 parts of polyether 2000N, 10 parts of polyether 330N, 5 parts of liquid modifier, 0.5 parts of dispersant, 0.5 parts of defoamer, 25 parts of talc, 8 parts of kaolin, 17 parts of heavy calcium, nano-TiO 2 Add 8 parts into a closed reaction kettle, mix and heat through high-speed stirring, dehydrate under reduced pressure at 120°C and 0.06Mpa for 180min, make the moisture content in the reaction kettle ≤0.02%, cool down to 75°C-80°C, and add 6 parts of MDI React at a constant temperature of 80°C for 120 minutes, add 0.1 parts of catalyst, and stop the reaction after 60 minutes of reaction. After the reaction, add 1.5 parts of latent curing agent, 0.5 parts of antioxidant, and 2 parts of anti-settling agent under high-speed stirring, and keep stirring 60min, finally lowered to below 40°C and discharged.

Embodiment 3

[0029] 17 parts of polyether 2000N, 8 parts of polyether 330N, 3 parts of liquid modifier, 0.4 parts of dispersant, 0.3 parts of defoamer, 22 parts of talc, 6 parts of kaolin, 16 parts of heavy calcium, nano-TiO 2 Add 7 parts into a closed reaction kettle, mix and heat through high-speed stirring, dehydrate under reduced pressure at 120°C and 0.06Mpa for 180min, make the moisture content in the reaction kettle ≤0.02%, cool down to 75°C-80°C, and add 5 parts of MDI , react at a constant temperature at 80°C for 120 minutes, add 0.08 parts of catalyst, and stop the reaction after 60 minutes of reaction. After the reaction, add 1.2 parts of latent curing agent, 0.4 parts of antioxidant, and 1.5 parts of anti-settling agent under high-speed stirring, and keep warm Stir for 60 minutes, and finally drop to below 40°C and discharge.

[0030] The construction process is as follows:

[0031] Grassroots treatment --- brushing the primary treatment agent --- additional layer constructio...

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Abstract

The invention discloses a polymeric environmentally-friendly waterproof polyurethane coating for waterproof parts of buildings. The polymeric environmentally-friendly waterproof polyurethane coating comprises, by weight, 15-20 parts of polyether 2000N, 5-10 parts of polyether 330N, 4-6 parts of MDI, 0.06-0.1 part of a catalyst, 1-1.5 parts of a latent curing agent, 1-5 parts of a liquid modifier,0.2-0.5 part of a dispersant, 0.2-0.5 part of a defoamer, 0.2-0.5 part of an antioxidant, 45-55 parts of a filler and 1-2 parts of an anti-settling agent. The environmentally-friendly waterproof polyurethane coating is a one-component environmentally-friendly waterproof coating constructed in a liquid state; and polyether polyol and isocyanate which are used as basic raw materials, and are subjected to addition polymerization in the presence of various additives and fillers, and -NCO in a polyurethane prepolymer is contacted and chemically reacted with moisture in air to generate chemical bonds in order to form an elastic, tough, compact and highly-strong jointless integral waterproof coating film.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a polymer environment-friendly polyurethane coating film material used for building waterproof parts. Background technique [0002] Polyurethane waterproof coatings first appeared in countries such as Europe and the United States, and domestic research in this area began in the 1970s. Its appearance made up for the shortage of asphalt waterproof coatings and coiled materials. However, with the development of polyurethane waterproof coatings, in the pursuit of While ignoring the high performance, some volatile organic compounds in the product will harm the human body and pollute the atmosphere. With the emergence of these problems, it is necessary to develop a product that maintains high performance, is conducive to environmental protection, and reduces harm to the human body. It is a polyurethane waterproof coating with the advantages of easy construction and so on. Contents...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/61C09D5/08C08G18/48
CPCC08G18/4812C08K2003/2241C08K2003/265C08K2201/011C09D5/08C09D7/61C09D175/08C08K3/36C08K3/34C08K3/346C08K3/26C08K3/22
Inventor 杨小林任雯徐天勇肖立衡波
Owner 四川杨氏达防水材料有限公司
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