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Modified polyurethane waterproof surface lacquer and preparation method thereof

A polyurethane waterproof and aliphatic polyurethane technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of low mechanical properties of surface paints, achieve durability, excellent physical and mechanical properties, and meet the needs of waterproof protection.

Active Publication Date: 2015-10-28
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of low mechanical properties of the surface paint in the thin-coated polyurethane waterproof system for the existing railway concrete base surface, the present invention selects suitable polyether polyols, fluorocarbon resins, fillers and various other materials according to the characteristics and performance requirements of the waterproof layer. Auxiliary components, through reasonable proportioning and processing technology, make the prepared modified polyurethane waterproof surface paint have better environmental adaptability, workability, excellent physical and mechanical properties and excellent durability, so that it can be better Fully meet the requirements of the durability, service life and waterproof effect of the waterproof layer for the railway concrete base

Method used

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  • Modified polyurethane waterproof surface lacquer and preparation method thereof
  • Modified polyurethane waterproof surface lacquer and preparation method thereof
  • Modified polyurethane waterproof surface lacquer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0062] The preparation of modified polyurethane waterproof surface paint of the present invention

[0063] (1) Preparation of component A

[0064] The ratio of each component in component A is as follows:

[0065] 50g polyether polyol (including 40g polypropylene oxide ether diol and 10g polypropylene oxide ether triol), 5g room temperature curing fluorocarbon resin, 30g rutile titanium dioxide, 5g filler (including 2.5g talcum powder , 1.5g barium sulfate, 0.30g medium pigment and 0.7g bentonite), 0.3g silicone (defoamer), 0.6g polyether modified polysiloxane (leveling agent), 1.0g carboxylic acid and siloxane Copolymer (dispersant) and 8g solvent (including 4.0g xylene and 4.0g butyl acetate);

[0066] The preparation method of A component is as follows:

[0067] Put the polyether polyol and fluorocarbon resin in the dispersion tank, add titanium dioxide, talcum powder, barium sulfate, mesochrome, bentonite in turn under the stirring condition of 1000-1400 rpm, and then a...

Embodiment 2

[0082] The preparation of modified polyurethane waterproof surface paint of the present invention:

[0083] (1) Preparation of component A

[0084] The ratio of each component in component A is as follows:

[0085] 42g polyether polyol (including 32g polypropylene oxide ether diol and 10g polypropylene oxide ether triol), 10g room temperature curing fluorocarbon resin, 25.5g rutile titanium dioxide, 10g filler (including 5.5g talc powder, 3.5g barium sulfate, 0.3g medium pigment and 0.7g bentonite), 0.4g silicone (defoamer), 0.8g polyether modified polysiloxane (leveling agent), 1.2g carboxylic acid and silicone Alkane copolymer (dispersant) and 10g solvent (including 5.0g xylene and 5.0g butyl acetate);

[0086] The preparation method of A component is with embodiment 1.

[0087] (2) preparation of aliphatic polyurethane curing agent

[0088] The ratio of each component in the aliphatic polyurethane curing agent is as follows:

[0089] 30g HDI biuret, 30g liquid polycarb...

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Abstract

The invention provides a modified polyurethane waterproof surface lacquer and a preparation method thereof. The surface lacquer comprises a component A and a component B, wherein the component A comprises, by mass, 40 to 50 parts of polyether polyol, 5 to 10 parts of fluorocarbon resin, 25 to 30 parts of titanium dioxide, 5 to 10 parts of a filling material, 2.0 to 2.5 parts of a film forming auxiliary agent and 5 to 10 parts of a solvent, and the component B comprises 60 to 80 parts by mass of isocyanate. According to the invention, appropriate polyether polyol, fluorocarbon resin, isocyanate, the filling material and the film forming auxiliary agent are selected based on the characteristics and performance requirements of a waterproof layer; and through reasonable proportioning and processing technology, the prepared modified polyurethane waterproof surface lacquer has good environment adaptability, application properties, excellent physical and mechanical properties and excellent durability, so the lacquer can better meet requirements of a waterproof layer of a railway concrete base for durability, service life and waterproof effect.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a modified polyurethane waterproof surface paint and a preparation method thereof. Background technique [0002] The waterproof layer of concrete bridge deck of railway high-speed rail ballastless track is an important technical means to improve the durability of bridge structure. The waterproof layer includes: (1) C40 fine polymer modified asphalt membrane + acrylic nitrile fiber or polypropylene fiber Stone concrete protective layer; (2) Thin-coated polyurethane waterproof system. The polyurethane waterproof system is directly exposed to the outdoors, and is exposed to sunlight and soaked in rain, snow, etc. during use. The performance of the surface paint directly affects the durability, service life and waterproof effect of the waterproof system. Contents of the invention [0003] Aiming at the disadvantages of low mechanical properties of the surface paint in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D175/06C09D7/12
CPCC09D7/61C09D175/06C09D175/08C08L27/12C08L83/12C08K2003/2241C08K3/34C08K2003/3045C08K3/346
Inventor 杜存山祝和权张恒
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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