Novel high-strength polyurethane waterproofing paint and preparation method thereof

A technology of polyurethane waterproofing and coating, which is applied in the direction of coating, etc., which can solve the problems of inability to prolong the operable time of coating construction, fail to meet the construction requirements, and poor operable time, so as to prolong the operable time of construction, low toxicity, and low residual TDI Effect

Inactive Publication Date: 2015-06-03
XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this invention has greatly improved the tensile strength and elongation at break of the coating film, because the construction operation time of the coating cannot be prolonged in the A component, the reaction speed of the B component and the A component during construction Fast, thus, the construction operation time of this invention is relatively poor, far from meeting the construction requirements

Method used

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  • Novel high-strength polyurethane waterproofing paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of component A: In a 1000mL four-necked bottle equipped with a stirrer, condenser, thermometer, and thermocouple, first add 200 parts of polyether diol and 20 parts of polyether triol, and slowly Raise the temperature to 120°C, and evacuate it to below -0.098Mpa, keep it for 2h, and lower the temperature; then add 60 parts of toluene-2,4-diisocyanate (TDI) at 80°C, control the temperature at 70-90°C, and keep stirring and react for 2.5 hours; then add 20 parts of diphenylmethane diisocyanate (MDI), the temperature is also controlled at 80°C, and react for 2.5 hours. The material is filled with nitrogen to protect the A component.

[0026] Preparation of component B: Add 80 parts of chlorinated paraffin, 30 parts of dibutyl phthalate, and 60 parts of polyether triol into a 1000 mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer and thermocouple Inside, after slowly raising the temperature to 100°C, slowly add 40 parts of 3,3-dichlor...

Embodiment 2

[0029] Preparation of component A: In a 1000mL four-necked bottle equipped with a stirrer, condenser, thermometer, and thermocouple, first add 160 parts of polyether diol and 60 parts of polyether triol, and slowly Raise the temperature to 100°C, and evacuate it below -0.098Mpa, keep it for 2h, and then lower the temperature; then add 40 parts of toluene-2,4-diisocyanate (TDI) at 100°C, and control the temperature at 90°C. React for 3 hours; then add 50 parts of diphenylmethane diisocyanate (MDI), the temperature is also controlled at 90 ° C, and react for 3 hours. The material is filled with nitrogen to protect the A component.

[0030] Preparation of component B: add 50 parts of aromatic oil, 60 parts of chlorinated paraffin, 50 parts of polyether trihydric alcohol, and 10 parts of polyether diol In the four-necked bottle, after slowly raising the temperature to 80°C, slowly add 50 parts of 3,3-dichloro-4,4-diphenylmethanediamine (MOCA), 5 parts of 1,4-butanediamine under h...

Embodiment 3

[0033] Preparation of component A: In a 1000mL four-necked bottle equipped with a stirrer, condenser, thermometer, and thermocouple, first add 100 parts of polyether diol and 120 parts of polyether triol, and slowly Raise the temperature to 130°C, and evacuate to below -0.098Mpa, keep it for 2 hours, and then lower the temperature; then add 20 parts of toluene-2,4-diisocyanate (TDI) at 60°C, and control the temperature at 70°C. React for 2 hours; then add 60 parts of diphenylmethane diisocyanate (MDI), the temperature is also controlled at 70 ° C, react for 2 hours, after the reaction is over, cool down; finally add 50 parts of chlorinated paraffin, stir evenly, discharge, and fill with nitrogen Protection is the A component.

[0034] Preparation of component B: Add 80 parts of aromatic oil, 30 parts of chlorinated paraffin, and 60 parts of polyether trihydric alcohol into a 1000 mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer and thermocouple, and...

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Abstract

The invention discloses a novel high-strength polyurethane waterproofing paint which consists of a component A and a component B. The component A is prepared from the following components in parts by weight: 140-350 parts of polyether polyol, 20-60 parts of TDI (toluene diisocyanate), 20-60 parts of diphenylmethane diisocyanate and 50-100 parts of a plasticizer; the component B is prepared from the following components in parts by weight: 50-100 parts of polyether polyol, 40-200 parts of a plasticizer, 20-80 parts of a chain extender, 100-300 parts of pigment and filler, 0.1-0.5 part of a catalyst, 0.1-0.5 part of a polymerization inhibitor and 0.1-1 part of a high-performance accessory ingredient defoaming agent. The invention also comprises a preparation method of the high-strength polyurethane waterproofing paint. The high-strength polyurethane waterproofing paint disclosed by the invention has relatively long operable construction time and excellent physical and mechanical properties such as high strength, high elongation rate and high bonding strength, and is low in residual TDI and toxicity. The novel high-strength polyurethane waterproofing paint can be widely applied to infrastructure construction and municipal traffic engineering, and particularly to water resistance of important projects such as high-speed railways and highway bridges.

Description

technical field [0001] The invention relates to a building waterproof paint and a preparation method thereof, in particular to a novel high-strength polyurethane waterproof paint and a preparation method thereof. Background technique [0002] Polyurethane waterproof coating is a chemically reactive, rubber-like high-elastic waterproof coating film after curing. This material has been widely used in construction because of its excellent comprehensive performance. Since the beginning of the 1980s in my country, polyurethane waterproof coatings have been discovered. Coating is the most successful film waterproof coating used so far, and it occupies an important position in waterproof applications. Among them, the high-strength polyurethane waterproof coating is a two-component polyurethane waterproof coating. The two components A and B are mixed, stirred evenly, and then reacted and cured to form a film. Compared with ordinary polyurethane waterproof coatings, high-strength pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/76C08G18/66C08G18/48
Inventor 白志欣李红英段鹏飞
Owner XUZHOU WONIUSHAN NEW WATERPROOF MATERIALS
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