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Protecting paint used on polyurea coating and preparation method and construction method for protecting paint

A technology of protective paint and coating, applied in the direction of coating, the device for coating liquid on the surface, etc., can solve the problems of poor weather resistance, insufficient strength, poor adhesion of wear-resistant materials, etc., to achieve excellent wear resistance, construction Convenience and good weather resistance

Inactive Publication Date: 2013-07-03
BEIJING LIGAO WATERPROOF ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a protective paint for polyurea coating and its preparation method and construction method. It is necessary to solve the problem of poor weather resistance, insufficient strength, wear resistance and poor bonding force with materials on the surface of the existing polyurea coating technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one, this kind of protective paint for polyurea coating is composed of two components of A and B and used in conjunction,

[0034] Component A is a prepolymer synthesized by the reaction of polyether polyol and polyisocyanate. The raw materials of component A are proportioned as follows by weight percentage:

[0035] Polyether polyol 74.9%;

[0036] Polyisocyanate 24.9%;

[0037] Catalyst 0.2%;

[0038] Component B is a dispersion composed of amino resins, pigments and fillers, and additives. The raw materials of component B are proportioned by weight percentage as follows:

[0039] Amino resin 75%;

[0040] Pigment and filler 24%;

[0041] Auxiliary 1%.

Embodiment 2

[0042] Embodiment two, this kind of protective paint for polyurea coating is composed of two components of A and B and used in conjunction,

[0043] Component A is a prepolymer synthesized by the reaction of polyether polyol and polyisocyanate. The raw materials of component A are proportioned as follows by weight percentage:

[0044] Polyether polyol 60.0%;

[0045] Polyisocyanate 39.8%;

[0046] Catalyst 0.2%.

[0047] Component B is a dispersion composed of amino resins, pigments and fillers, and additives. The raw materials of component B are proportioned by weight percentage as follows:

[0048] Amino resin 60%;

[0049] Pigment and filler 37%;

[0050] Auxiliary 3%.

Embodiment 3

[0051] Embodiment three, this kind of protective paint for polyurea coating is composed of two components of A and B and used in conjunction,

[0052] Component A is a prepolymer synthesized by the reaction of polyether polyol and polyisocyanate. The raw materials of component A are proportioned as follows by weight percentage:

[0053] Polyether polyol 89.9%;

[0054] Polyisocyanate 10.0%;

[0055] Catalyst 0.1%.

[0056] Component B is a dispersion composed of amino resins, pigments and fillers, and additives. The raw materials of component B are proportioned by weight percentage as follows:

[0057] Amino resin 90.0%;

[0058] Pigment and filler 9.9%;

[0059] Auxiliary 0.1%.

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Abstract

The invention discloses a protecting paint used on a polyurea coating and a preparation method and a construction method for the protecting paint. The protecting paint consists of double components A and B used together, wherein the component A is a prepolymer synthesized by reaction of polyether polyol and polyisocyanate; and the component A comprises the following raw materials in percentage byweight: 60.0 to 89.8 percent of polyether polyol, 10.0 to 39.8 percent of polyisocyanate, and 0.1 to 0.2 percent of catalyst. The component B is dispersoid consisting of amino resin, pigment and aid;and the component B comprises the following raw materials in percentage by weight: 60.0 to 90.0 percent of amino resin, 9.9 to 37.0 percent of pigment, and 0.1 to 3.0 percent of aid. The protecting paint has excellent comprehensive performance and strong weather resistance, can be used for high-level waterproof engineering of various buildings and structures, is mainly applied to the surface of apolyurea waterproof layer of a high-speed railway, and can also be used on the roof of a building and a protective layer of a waterproof layer of a stadium stand.

Description

technical field [0001] The invention relates to a protective material for the surface of a building waterproof layer, in particular to a protective paint for the surface of a polyurea coating and a preparation method and a construction method thereof. Background technique [0002] At present, general aromatic polyurethane and polyurea waterproof coatings generally have excellent physical properties, but the disadvantages of this type of waterproof coating are poor weather resistance, easy yellowing when exposed to sunlight, and easy chalking and aging after a long time. cracking. Especially in recent years, with the development of high-speed railways, the demand for waterproof and anti-corrosion materials used on high-speed railways has increased, and the requirements for materials themselves have also increased. General aromatic polyurethane and polyurea waterproof materials cannot meet the requirements of being exposed to the outdoors. This requires the development of a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/54C08G18/48C08G18/10B05D7/26
Inventor 王政昌杜卫卫赵文龙段霓华徐靖
Owner BEIJING LIGAO WATERPROOF ENG CO LTD
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