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High performance polyurethane waterproof coating material and preparation thereof

A polyurethane waterproof and high-performance technology, used in polyurea/polyurethane coatings, antifouling/underwater coatings, coatings, etc. Molecular flexibility, easy rebound, easy orientation and crystallization effect

Inactive Publication Date: 2009-07-08
XIAN TONGRUI NEW MATERIAL DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of these two waterproof materials require hot construction, which poses fire hazards, pollutes the environment, and damages health.
The more prominent problem is that these waterproof materials have shortcomings such as inelasticity and brittleness at low temperature, resulting in poor waterproof effect and short service life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take 35 parts of TDI, 15 parts of dioctyl phthalate, and 0.4 parts of cobalt naphthenate, mix them evenly, raise the temperature to 65°C, and add adipic acid and butanediol polycondensation polycondensate with a molecular weight of 500 while stirring. 50 parts of polyester, gradually raise the temperature to 75°C, keep it warm for 2 hours, then raise the temperature to 90°C for 1 hour, 120°C for half an hour, cool down and discharge to form component A.

[0044] Take 27 parts of chlorinated paraffin, 18 parts of petroleum resin, 28 parts of heavy calcium powder, and 6 parts of iron oxide red, mix all the components, heat up to 120°C and vacuum for 30 minutes, continue stirring and heat up to 160°C for half an hour, Then add 11 parts of MOCA, stir, cool down and discharge to form component B.

[0045] Mix components A and B evenly at a ratio of 1:2, and scrape and coat the surface-treated glass plate evenly to prevent air bubbles. After repeated scraping to make the thi...

Embodiment 2

[0047] Take 22 parts of HTDI, 8 parts of dibutyl phthalate, 0.3 parts of dibutyltin dilaurate, and 0.3 parts of benzoyl chloride, mix them evenly, raise the temperature to 65°C, and add adipic acid and ethylene glycol to polycondensate while stirring. Prepare 100 parts of polyester with a molecular weight of 3000. Gradually raise the temperature to 75°C, keep it warm for 2 hours, then raise the temperature to 90°C for 1 hour, 120°C for half an hour, cool down and discharge to form component A.

[0048] Take 20 parts of paraffin, 10 parts of castor oil, 18 parts of petroleum resin, 26 parts of talcum powder, and 8 parts of iron oxide red, mix all the components, heat up to 120°C and vacuum for 30 minutes, continue stirring and heat up to 160°C for half a day Hours, then add 15 parts of DDM, stir, cool down and discharge, which is component B.

[0049] Mix components A and B evenly at a ratio of 1.0:1.0, and scrape and coat the surface-treated glass plate evenly to prevent air b...

Embodiment 3

[0051] Take 21 parts of TMDI, 10 parts of dilauryl phthalate, and 0.5 parts of triethylenediamine. Mix it evenly, raise the temperature to 65°C, add 100 parts of polyester with a molecular weight of 2000 formed by polycondensation of adipic acid and diethylene glycol under stirring, gradually raise the temperature to 75°C, keep it warm for 2 hours, and then raise the temperature to 90°C for reaction 1 hour, 120 ° C reaction for half an hour. Cooling and discharging is component A.

[0052] Take 27 parts of chlorinated paraffin, 11 parts of petroleum resin, 21 parts of light calcium powder, and 6 parts of titanium dioxide. Mix all the components, heat up to 120°C and vacuum for 30 minutes, continue stirring and heat up to 160°C for half an hour, then Add 22 parts of MOCA, stir, cool down and discharge, which is component B.

[0053] Mix components A and B evenly at a ratio of 1.0:1.5, and scrape and coat the surface-treated glass plate evenly to prevent air bubbles. After re...

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Abstract

The invention discloses a polyurethane waterproof coating for building and a method for preparing the same. The polyurethane waterproof coating consists of a composition A and a composition B according to the weight ratio of 1.0:1.0-2.5, wherein the composition A comprises 50 to 130 portions of polyester oligomer with high crystallization degree, 18 to 45 portions of polyisocyanate, 5 to 15 portions of phthalate and 0.1 to 0.8 portion of a catalyst; the composition B comprises 3 to 15 portions of a curing agent, 10 to 25 portions of a reinforcing agent, 17 to 35 portions of a lubricant, 20 to 36 portions of a filler, and 5 to 18 portions of paint. The method selects linear polyester with stronger polarity and higher crystallization degree and the polyisocyanate for reaction to prepare the composition A; the composition A and the composition B have good matching performance; and a high-elasticity material formed through the mixing and curing of two compositions is subjected to rapid oriented crystallization under the action of drawing force, so that the material has high tensile strength.

Description

technical field [0001] The invention relates to a coating for construction and a preparation method thereof, in particular to a high-performance polyurethane waterproof coating and a preparation method thereof. technical background [0002] Waterproofing (including leak-proof and seepage-proof) is an important part of construction engineering. With the development of society and the improvement of people's living standards, new and high requirements are constantly put forward for waterproof materials. This has just prompted the continuous improvement and continuous development of waterproof materials. It is mainly reflected in the higher requirements for the performance of waterproof materials, such as high strength, high elongation at break, and high elasticity; more comprehensive requirements are also put forward for the functions of waterproof materials, such as waterproof performance, sealing performance, bonding More importantly, the environmental safety and personal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/16C09D7/12
Inventor 曹瑞军刘志锋
Owner XIAN TONGRUI NEW MATERIAL DEV
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