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Single-composition polyurethane waterproof paint and preparation method thereof

A polyurethane waterproof, one-component technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as easy foaming, unsightly surface effect, and sticky surface

Inactive Publication Date: 2015-04-08
武汉市恒星防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after using one-component polyurethane, everyone found that today's one-component polyurethane waterproof coating still has the following deficiencies: the current one-component polyurethane waterproof coating used in the market is prone to foaming during construction, the surface effect is not good-looking, and it is difficult to achieve Good waterproof effect; the surface will be sticky after drying

Method used

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  • Single-composition polyurethane waterproof paint and preparation method thereof
  • Single-composition polyurethane waterproof paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In a 3.5 ton reactor, add polyether DL2000 640kg, polyether 3050160kg, chlorinated paraffin 240kg, dioctyl 80kg. Heat and stir, add iron black 60kg, calcite powder 700kg, kaolin 152kg, light calcium 500kg, heat to 115°C, keep the temperature at 115-120°C, keep warm for 2 hours, vacuumize during the heat preservation process, the vacuum degree is -0.09MPa. Then add TDI to react, the reaction time is 2 hours, the temperature is 85°C, after the reaction is completed, stannous octoate is added to catalyze the reaction, the reaction time is 1 hour, the temperature is 85°C. After the reaction is completed, add a curing agent, a special catalyst, and xylene, mix well, and lower the temperature to 60°C to discharge.

Embodiment 2

[0020] In a 3.5 ton reactor, add polyether DL2000600kg, polyether 3050200kg, chlorinated paraffin 240kg, dioctyl 80kg. Heat and stir, add iron black 60kg, calcite powder 1200kg, kaolin 152kg, heat to 115°C, keep the temperature at 115-120°C, keep warm for 2 hours, vacuumize during the heat preservation process, the vacuum degree is -0.09MPa. Then add TDI to react, the reaction time is 2 hours, the temperature is 85°C, after the reaction is completed, stannous octoate is added to catalyze the reaction, the reaction time is 1 hour, the temperature is 85°C. After the reaction is completed, add a curing agent, a special catalyst, and xylene, mix well, and lower the temperature to 60°C to discharge.

Embodiment 3

[0022] In a 3.5-ton reactor, add 680kg of polyether DL2000, 120kg of polyether 3050, 240kg of chlorinated paraffin, and 80kg of dioctyl ester. Heat and stir, add iron black 60kg, calcite powder 1000kg, kaolin 152kg, light calcium 200kg, heat to 115°C, keep the temperature at 115-120°C, keep warm for 2 hours, vacuumize during the heat preservation process, the vacuum degree is -0.09MPa. Then add TDI to react, the reaction time is 2 hours, the temperature is 85°C, after the reaction is completed, stannous octoate is added to catalyze the reaction, the reaction time is 1 hour, the temperature is 85°C. After the reaction is completed, add a curing agent, a special catalyst, and xylene, mix well, and lower the temperature to 60°C to discharge.

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Abstract

Related single-composition polyurethane waterproof paint is prepared by mixing materials of the following formula, in parts by weight, 600-680 parts of polyether DL2000, 3050 120-200 parts of polyether, 230-250 parts of chlorinated paraffin, 70-90 parts of dioctyl phthalate, 50-70 parts of iron black, 700-1200 parts of calcite powder, 150-160 parts of kaolin, 100-140 parts of toluene diisocyanate (TDI), 30-50 parts of stannous octoate, 8-12 parts of a curing agent, and 300-350 parts of xylene. Compared with conventional polyurethane waterproof paint, the single-composition polyurethane waterproof paint is simple for film coating, good in coating effect, free of surface bubbles, and good in tensile strength and elongation at break, and dried polyurethane is smooth and flat in surface and excellent in bonding effect.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a one-component polyurethane waterproof coating Background technique [0002] In recent years, the development of the country is changing with each passing day, and urban construction is in full swing. With the progress of various engineering constructions, the problem of water seepage and leakage on roofs, floors, and basements has always plagued people. Therefore, waterproof projects have emerged as the times require, and various waterproof materials emerge in endlessly. The waterproof industry Flourish. As a new type of waterproof material, waterproof coating has entered everyone's field of vision. With the new concept of high technology, low cost and ultra-environmental protection, it has gradually become the trend of waterproofing, and has been widely used in various projects. Polyurethane waterproof coating is an environmentally friendly waterproof coating for l...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C08G18/48
CPCC09D175/08C08G18/4804C08G18/4829C09D7/61C09D7/63C09D7/65C08L91/06C08K13/02C08K3/34C08K3/346C08K2003/265C08K2003/2265
Inventor 张帆
Owner 武汉市恒星防水材料有限公司
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