Novel polyurethane waterproof coating and preparation method thereof

A new type of polyurethane waterproof technology, applied in the field of coatings, can solve the problems of environmental protection, unfavorable human health, and high process requirements, and achieves the effects of low curing shrinkage, suitable for promotion and application, and high solid content.

Active Publication Date: 2020-01-17
李承德 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic two-component polyurethane waterproof coatings are mainly based on asphalt and solvent-based waterproofing, which contain solvents and plasticizers. The addition of solvents will cause a certain amount of VOC (volatile organic compounds) to be generated during the curing process of the product. Released into the atmosphere, it causes

Method used

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  • Novel polyurethane waterproof coating and preparation method thereof
  • Novel polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] This embodiment provides a novel polyurethane waterproof coating, consisting of A component and B component,

[0027] The A component is composed of the following raw materials in parts by weight: 250 parts of polyether N-240, 450 parts of polyether N-3050, 350 parts of diphenylmethane diisocyanate;

[0028] The B component is composed of the following raw materials in parts by weight: 350 parts of polyether N-330, 550 parts of heavy calcium, 2 parts of antioxidant (B225), ultraviolet absorber (2-hydroxy-4-n-octyloxydi Benzophenone) 2 parts, 15 parts of toner, 50 parts of p-di-o-chloroaniline methane, 3 parts of organic zinc catalyst (zinc isooctanoate).

[0029] The weight ratio of the A component and the B component is 1:2.

[0030] Further, a method for preparing the novel polyurethane waterproof coating is provided, comprising the steps of:

[0031] (1) Preparation of component A: Add polyether N-240 and polyether N-3050 to the reactor, heat to 100°C, stir at a sp...

Embodiment 2

[0035] This embodiment provides a novel polyurethane waterproof coating, consisting of A component and B component,

[0036] The A component is composed of the following raw materials in parts by weight: 200 parts of polyether N-240, 400 parts of polyether N-3050, 300 parts of diphenylmethane diisocyanate;

[0037] The B component consists of the following raw materials in parts by weight: 300 parts of polyether N-330, 500 parts of heavy calcium, 1 part of antioxidant (B225), ultraviolet absorber (2-hydroxy-4-methoxydiphenyl ketone) 1 part, toner 10 parts, p-di-o-chloroaniline methane 40 parts, organic bismuth catalyst (DY-20) 1 part;

[0038] The weight ratio of the A component and the B component is 1:1.

[0039] Further, a method for preparing the novel polyurethane waterproof coating is provided, comprising the steps of:

[0040] (1) Preparation of component A: Add polyether N-240 and polyether N-3050 to the reactor, heat to 100°C, stir at a speed of 1000r / min for 1h, an...

Embodiment 3

[0044] This embodiment provides a novel polyurethane waterproof coating, consisting of A component and B component,

[0045] The A component is composed of the following raw materials in parts by weight: 300 parts of polyether N-240, 500 parts of polyether N-3050, 400 parts of diphenylmethane diisocyanate;

[0046]The B component is composed of the following raw materials in parts by weight: 400 parts of polyether N-330, 600 parts of heavy calcium, 3 parts of antioxidant (B215), 3 parts of ultraviolet absorber (resorcinol monobenzoate) , 20 parts of toner, 60 parts of p-di-o-chloroaniline methane, 5 parts of organozinc catalyst (KRZN1);

[0047] The weight ratio of the A component and the B component is 1:3.

[0048] Further, a method for preparing the novel polyurethane waterproof coating is provided, comprising the steps of:

[0049] (1) Preparation of component A: Add polyether N-240 and polyether N-3050 to the reactor, heat to 110°C, stir at a speed of 2000r / min for 2 ho...

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Abstract

The invention relates to a novel polyurethane waterproof coating and a preparation method thereof. The novel polyurethane waterproof coating is prepared from a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight: 200-300 parts of polyether N-240, 400-500 parts of polyether N-3050 and 300-400 parts of diphenylmethane diisocyanate, and the B component is prepared from the following raw materials in parts by weight: 300-400 parts of polyether N-330, 500-600 parts of heavy calcium carbonate, 1-3 parts of an antioxidants, 1-3 partsof an ultraviolet light absorber, 10-20 parts of toner, 40-60 parts of 4,4'-methylene-bis(2-chloroaniline) and 1-5 parts catalyst; and the weight ratio of the component A and the component B is 1: (1-3). The novel polyurethane waterproof coating has excellent performances, does not contain solvents and plasticizers, is friendly to the environment and human bodies, represents the development trendof ecological and environmentally friendly waterproof materials and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a novel polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproofing materials were developed in the 1960s. The country has developed from the initial tar-based polyurethane waterproofing coatings to asphalt polyurethane waterproofing coatings, and now the polyurethane color waterproofing coatings. [0003] At present, domestic two-component polyurethane waterproof coatings are mainly based on asphalt and solvent-based waterproofing, which contain solvents and plasticizers. The addition of solvents will cause a certain amount of VOC (volatile organic compounds) to be generated during the curing process of the product. Released into the atmosphere, it causes environmental pollution and is harmful to human health. The addition of plasticizers in coatings can reduce costs and improve the tensile strength, tou...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/61C09D7/63C08G18/76C08G18/48C08G18/12
CPCC08G18/12C08G18/4812C08G18/7671C08K2003/265C09D175/08C09D7/61C09D7/63C08G18/48C08K13/02C08K3/26C08K5/132C08K5/18
Inventor 李承德郑华潘芳华
Owner 李承德
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