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A kind of white polyurea waterproof coating and its application

A waterproof coating, white technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of material aging, high energy consumption, high ultraviolet light intensity, and achieve the effects of excellent waterproof, reduced energy consumption, and high light reflectivity

Active Publication Date: 2018-07-27
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the more commonly used and mature method is to use UV-curable white paint to coat the surface of asphalt coils, and then irradiate it with ultraviolet radiation to form a film to produce white asphalt coils. However, this method requires a special UV curing device, and The required ultraviolet light intensity is high and consumes a lot of energy. At the same time, the irradiation of strong ultraviolet light may also accelerate the aging of materials.
[0004] Therefore, it is urgent to develop a white waterproof coating that can be quickly cured into a film and has high light reflectivity to overcome the problems of high energy consumption and material aging encountered in the current online production of white asphalt coils.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Preparation of white polyurea waterproof coating

[0019] (1) Preparation of prepolymer A component

[0020] Isophorone diisocyanate (IPDI), phosphoric acid and dibutyltin dilaurate were uniformly mixed in a mass ratio of 100:0.2:0.2 in advance to prepare diisocyanate mixture 1, which was used in the following synthesis process.

[0021] Add 5% PPG500 and 30% PPG2000 into the reactor, dehydrate under reduced pressure at 100°C for 1-3 hours, take samples to measure the moisture content, stop dehydration when the moisture content reaches below 0.08%, cool to 80°C and maintain at At this temperature, add 5% of the diisocyanate mixture 1 dropwise to the kettle while stirring. After the dropwise addition, continue the reaction at 80°C for 2 hours; then add the remaining 60% of the diisocyanate mixture 1 dropwise at this temperature, dropwise After the addition, continue to keep warm for 4 hours, cool to 40°C, discharge and seal in a container to obtain prepolymer compone...

Embodiment 2

[0028] 1. Preparation of white polyurea waterproof coating

[0029] (1) Preparation of prepolymer A component

[0030] Hexamethylene diisocyanate (HDI), phosphoric acid and dibutyltin dilaurate were uniformly mixed in a mass ratio of 100:0.2:0.2 in advance to prepare diisocyanate mixture 2, which was used in the following synthesis process.

[0031] Add 6% PPG500 and 30% PPG2000 into the reactor, dehydrate under reduced pressure at 100°C for 1-3 hours, take samples to measure the moisture content, stop dehydration when the moisture content reaches below 0.08%; cool to 80°C and maintain at At this temperature, add 5% of the diisocyanate mixture 2 dropwise to the kettle while stirring. After the dropwise addition, continue the reaction at 80°C for 2 hours; then add the remaining 59% of the diisocyanate mixture 2 dropwise at this temperature, drop After the addition, continue to keep warm for 4 hours, cool to 40°C, discharge and seal in a container to obtain prepolymer component...

Embodiment 3

[0038] 1. Preparation of white polyurea waterproof coating

[0039] (1) Preparation of prepolymer A component

[0040] Hexamethylene diisocyanate (HDI), phosphoric acid and dibutyltin dilaurate were uniformly mixed in a mass ratio of 100:0.2:0.2 in advance to prepare diisocyanate mixture 2, which was used in the following synthesis process.

[0041] Add 6% PPG500 and 30% PPG2000 into the reactor, dehydrate under reduced pressure at 100°C for 1-3 hours, take samples to measure the moisture content, stop dehydration when the moisture content reaches below 0.08%; cool to 80°C and maintain at At this temperature, 5% diisocyanate mixture 2 was added dropwise to the kettle while stirring. After the dropwise addition was completed, the reaction was continued at 80° C. for 2 h. Then at this temperature, the remaining 59% of the diisocyanate mixture 2 was added dropwise. After the dropwise addition, the heat preservation reaction was continued for 4 hours, cooled to 40° C., discharged...

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PUM

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Abstract

The invention relates to white polyurea waterproof paint and application. The waterproof paint is composed of a prepolymer component A and a curing agent component B, wherein the component A is prepared from, by mass, 40-65% of aliphatic polyisocyanate, 30-45% of polyether polyol, 0.1-0.3% of a catalyst and 0.001-0.3% of a polymerization inhibitor; the curing agent component B is prepared from, by mass, 30-60% of amine-terminated polyether resin, 20-50% of chain extender, 10-25% of white filler, 0.3-3% of an ultraviolet absorbent, 0.2-0.5% of a flatting agent and 0.2-0.5% of a dispersing agent. The waterproof paint has the 100% solid content, can be automatically cured completely within 10 min when sprayed onto an asphalt roll and has high luminous reflectance, and the requirement for online production speed of the asphalt roll is met completely.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a white polyurea waterproof coating and its application. Background technique [0002] With the emergence of energy shortages, energy conservation has attracted more and more attention. Among them, the cool roof system is one of the important measures for building energy conservation. According to the estimate of the US Environmental Protection Agency, the annual cooling cost of commercial buildings is about 40 billion US dollars, which is equivalent to 1 / 6 of the electricity cost in the United States. The cold roof system can save air conditioning costs by 10% to 40% every year. Although there is no specific detailed statistics in our country, it is an indisputable fact that a large number of air-conditioning refrigeration is used in summer. Therefore, the cool roof system has gradually attracted great attention from roof designers and owners in my country. [0003] Today, there are tw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C08G18/48C08G18/50
CPCC08G18/48C08G18/482C08G18/5021C09D175/02
Inventor 韩光段文锋王新峰
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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