Anti-sagging polyurethane waterproof coating

A polyurethane waterproof and anti-sagging technology, applied in the direction of polyurea/polyurethane coatings, thixotropic coatings, coatings, etc., can solve the problems of unsatisfactory waterproof effect, difficult to form a coating film with uniform thickness, etc., and achieve good waterproof effect. , storage stability, solve the effect of viscosity increase

Inactive Publication Date: 2015-04-22
JIANGSU CANLON BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When constructing on facades and slopes, due to its own gravity, the paint will flow and fall before the film is formed, it is difficult to form a uniform thickness of the film, and finally the waterproof effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 23kg of polyether polyol and 13kg of plasticizer into the reaction kettle cleaned with 5kg of solvent oil, and start stirring and heating. Put 19kg of light calcium and 23kg of heavy calcium powder into the dispersion kettle slowly, and stir while adding to make the powder fully dispersed. After adding the powder, keep the material temperature in the reactor at 100~110°C. Afterwards, keep constant temperature and vacuumize for 1.5 hours under the pressure of -0.08MPa, and cool the material to 75~80°C. Add 8kg of isocyanate to the reactor and react at 70~85°C for 2 hours. Then add 0.8kg of latent curing agent into the reactor, continue the constant temperature reaction for 30 minutes, and then stop heating. Add 0.8 kg of thixotropic agent and 0.15 kg of catalyst into the reactor, stir and react for 15 minutes, then add 0.03 kg of defoamer. Stop stirring, and lower the temperature, vacuumize, and start discharging. After the material is discharged, clean the reac...

Embodiment 2

[0027] Add 20kg of polyether polyol and 10kg of plasticizer into the reaction kettle cleaned with 8kg of solvent oil, and start stirring and heating. Put 18kg of light calcium and 25kg of heavy calcium powder into the dispersion kettle slowly, and stir while adding to make the powder fully dispersed. After adding the powder, keep the material temperature in the reactor at 100~110°C. Afterwards, keep constant temperature and vacuumize for 1.5 hours under the pressure of -0.08MPa, and cool the material to 75~80°C. Add 10kg of isocyanate into the reactor and react at 70~85°C for 2 hours. Add 0.5 kg of latent curing agent into the reaction kettle, continue the constant temperature reaction for 30 minutes, and then stop heating. Add 0.5kg of thixotropic agent and 0.1kg of catalyst into the reaction kettle, stir and react for 15 minutes, then add 0.01kg of defoamer. Stop stirring, and lower the temperature, vacuumize, and start discharging. After the material is discharged, cle...

Embodiment 3

[0029] Add 25kg of polyether polyol and 15kg of plasticizer into the reaction kettle cleaned with 3kg of solvent oil, and start stirring and heating. Put 20kg of light calcium and 20kg of heavy calcium powder into the dispersion kettle slowly, and stir while adding to make the powder fully dispersed. After adding the powder, keep the material temperature in the reactor at 100~110°C. Afterwards, keep constant temperature and vacuumize for 1.5 hours under the pressure of -0.08MPa, and cool the material to 75~80°C. Add 5kg of isocyanate into the reactor and react at 70~85°C for 2 hours. Add 1 kg of latent curing agent into the reaction kettle, continue the constant temperature reaction for 30 minutes, and then stop heating. Add 1kg of thixotropic agent and 0.2kg of catalyst into the reaction kettle, stir and react for 15 minutes, then add 0.05kg of defoamer. Stop stirring, and lower the temperature, vacuumize, and start discharging. After the material is discharged, clean th...

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PUM

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Abstract

The invention discloses an anti-sagging polyurethane waterproof coating comprising the following components in parts by weight: 20-25 parts of polyether glycol, 5-10 parts of isocyanate, 10-15 parts of a plasticizer, 18-20 parts of light calcium, 20-25 parts of heavy calcium, 0.5-1 part of a thixotropic agent and 0.5-1 part of a latent curing agent. The invention aims at providing the anti-sagging polyurethane waterproof coating suitable for vertical surfaces and slope surfaces, uniform in film formation and good in waterproof effect.

Description

technical field [0001] The invention relates to an anti-sag polyurethane waterproof coating, in particular to a one-component anti-sag polyurethane waterproof coating. Background technique [0002] At present, some large-scale projects in China, such as South-to-North Water Diversion, basement walls of large-scale system venues, high-speed railways, subways, tunnels, civil air defense, etc., require waterproofing construction on facades or slopes. Because it is a facade or a slope surface, etc., the construction is inconvenient and prone to quality problems. Waterproof paint can be used to form a seamless waterproof layer, but when it is painted on the facade or slope with general-purpose paint, it will flow, causing the upper part to be thin and the lower part to be thick. The thickness of the upper part cannot be scratched, and the surface thickness of the coating film is uneven. If you want to paint a 1.5mm thick coating film, you may need to paint it four or five times...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D5/00C09D7/12C08G18/76C08G18/48
CPCC08G18/48C09D5/04C09D175/08C08K3/26C08K3/36C08K5/12C08K13/02C08K2003/265C08K2201/014C08L91/06
Inventor 黄祖行赵祖兵孙先坤
Owner JIANGSU CANLON BUILDING MATERIALS
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