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Coating polyurethane mortar

A technology of polyurethane and polyurethane polyols, which is applied in coatings, polyurea/polyurethane coatings, antifouling/underwater coatings, etc., and can solve problems such as loose air bubbles and affecting the surface quality and physical properties of polyurethane mortar self-leveling floors

Pending Publication Date: 2021-04-09
MONICA POLYMER MATERIALS SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyurethane waterproof coating is a kind of reaction curing coating, which has rubber elasticity, good ductility and adhesion, and the coating film has strong adaptability to the deformation of cracks in the base. There will be problems such as air bubbles and looseness, which will affect the surface quality and physical properties of the polyurethane mortar self-leveling floor

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0037] The present invention also provides an ultra-thin polyurethane mortar self-leveling floor, which is prepared from the above-mentioned coated polyurethane mortar. Its preparation method comprises the following steps:

[0038] S1. Carry out cleaning treatment and smoothness treatment on the base layer;

[0039] S2. In parts by weight, add 1-3 parts of component A and 1-2 parts of component B into the mixer and stir for 1-3 minutes; then slowly add 4-6 parts of component C and continue stirring for 2-5 minutes to obtain Coated polyurethane mortar;

[0040] S3, spreading the coated polyurethane mortar on the surface of the base layer with a thickness of 0.3-0.8mm to obtain the primer layer, and after drying for 24 hours, apply the coated polyurethane mortar on the primer layer with a mortar trowel or a scraper, The thickness is 0.8-1.2mm, and the defoaming roller is used to run on the surface immediately to remove the air in the material, and after drying for 24 hours, th...

Embodiment 1

[0046] Embodiment 1 provides a kind of coating polyurethane mortar, comprises component A, component B and component C, and described component A comprises polyurethane polyol 75 parts by weight, leveling agent 2 parts, water reducer 2 parts, 25 parts of water, 2 parts of nano titanium dioxide;

[0047] The component B includes by weight: 85 parts of isocyanate, 2 parts of leveling agent;

[0048] The component C includes 7 parts by weight of cement, 45 parts of silica sand, and 2 parts of toner (purchased from Dongguan Caitian Chemical Co., Ltd., model is phthalocyanine green 6532);

[0049] The polyurethane polyol has 3 functional groups, a weight average molecular weight of 1800, and a hydroxyl value of 57-63 mgKOH / g. It is purchased from Huada Chemical Group Co., Ltd., model MX-2325.

[0050] The water reducer is a dry powder polycarboxylate high-performance water reducer purchased from Mingyu Chemical Firm in Jinshui District, Zhengzhou City.

[0051] The leveling agent u...

Embodiment 2

[0059] Embodiment 2 provides a kind of coating polyurethane mortar, comprises component A, component B and component C, and described component A comprises polyurethane polyol 70 parts by weight, leveling agent 2 parts, water reducer 2 parts, 25 parts of water, 2 parts of nano titanium dioxide;

[0060] The component B includes by weight: 85 parts of isocyanate, 2 parts of leveling agent;

[0061] The component C includes 7 parts by weight of cement, 45 parts of silica sand, and 2 parts of toner (purchased from Dongguan Caitian Chemical Co., Ltd., model is phthalocyanine green 6532);

[0062] The polyurethane polyol has 3 functional groups, a weight average molecular weight of 1800, and a hydroxyl value of 57-63 mg KOH / g. It is purchased from Huada Chemical Group Co., Ltd., model MX-2325.

[0063] The water reducer is a dry powder polycarboxylate high-performance water reducer purchased from Mingyu Chemical Firm in Jinshui District, Zhengzhou City.

[0064] The leveling agen...

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Abstract

The invention discloses coating polyurethane mortar, which comprises a component A, a component B and a component C, wherein the component A comprises the following components in parts by weight: 70-80 parts of polyurethane polyol, 1-3 parts of a leveling agent, 1-3 parts of a water reducing agent, 20-30 parts of water and 1-5 parts of nano titanium dioxide, the component B is prepared from the following components in parts by weight: 80-90 parts of isocyanate and 1-5 parts of a leveling agent, and the component C comprises the following components in parts by weight: 5-10 parts of cement, 30-60 parts of silica sand and 0-5 parts of toner. According to the invention, during use, the component A, the component B and the component C are evenly mixed according to the weight ratio of the component A to the component B to the component C of (1-3):(1-2):(4-6), and the prepared ultra-thin polyurethane mortar self-leveling floor is high in surface quality, free of cracks or air holes and high in compressive strength, breaking strength and adhesive strength.

Description

technical field [0001] The invention belongs to the field of foaming agents, in particular to a coated polyurethane mortar. Background technique [0002] Polyurethane mortar is an engineering material prepared by using polyurethane waterproof coating instead of cement as a gel material, combined with sand, and plays the role of bonding, waterproofing, and stress transmission in engineering applications. Polyurethane waterproof coating is a reaction-curable coating with rubber elasticity, good ductility and cohesion, and the coating film has strong adaptability to the deformation of cracks in the base. There will be problems such as air bubbles and looseness, which will affect the surface quality and physical properties of the polyurethane mortar self-leveling floor. Contents of the invention [0003] In order to solve the above problems, the invention provides a coated polyurethane mortar, comprising component A, component B and component C; [0004] The component A incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/14C08G18/76
CPCC08G18/7621C08K2003/2241C08K2201/003C08K2201/006C08K2201/011C09D5/14C09D175/04C08K3/22
Inventor 刘锡涛
Owner MONICA POLYMER MATERIALS SHANGHAI CO LTD
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