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A kind of polyurethane non-curing waterproof coating and its production process

A waterproof coating, non-curing technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of troublesome handling of details, not energy-saving and environmentally friendly materials, slow influence of moisture volatilization, etc., to achieve good anti-sagging performance, The construction is convenient and energy-saving, and it is not easy to drum up.

Active Publication Date: 2018-10-23
WEIFANG HONGYUAN WATERPROOF MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current non-curing coatings are generally based on asphalt, and the hot-melt non-curing coatings must be heated to above 180°C before construction. The spraying equipment is heavy, the details are troublesome, and a large amount of asphalt fumes will be generated during construction. It is not an energy-saving and environmentally friendly material; solvent-based non-curing coatings are mainly water-based, and its water volatilization is too slow, which affects the construction period and is prone to bubbling and quality problems

Method used

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  • A kind of polyurethane non-curing waterproof coating and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 A polyurethane non-curing waterproof coating and its production process

[0031] A polyurethane non-curing waterproof coating includes two components A and B, and the mass ratio A:B during construction is 1:0.4.

[0032] The A component, in parts by weight, includes the following components: 3 to 4 parts of diisocyanate, 40 to 50 parts of di-amino-terminated polyether, and 14 to 16 parts of 4,4'-bis-sec-butylaminodiphenylmethane , 20-25 parts of softener, 15-18 parts of fumed silica, 0.2-0.4 parts of modified active polyamide wax powder, 0.3-0.5 parts of silane coupling agent, 0.1-0.2 parts of bismuth isooctanoate.

[0033] The preparation steps of the A component are as follows:

[0034] Keeping room temperature, slowly add 4 parts of diisocyanate to 45 parts of di-amino-terminated polyether, react for about 2h, and then add 16 parts of 4,4'-bis-sec-butylaminodiphenylmethane, 25 parts of softener, gas phase 15 parts of silicon dioxide, 0.4 part of modified active po...

Embodiment 2

[0044] Example 2 A polyurethane non-curing waterproof coating and its production process

[0045] The polyurethane non-curing waterproof coating includes two components A and B, and the mass ratio during construction is A:B=1:0.5.

[0046] The A component, in parts by weight, includes the following components: 3 to 4 parts of diisocyanate, 40 to 50 parts of di-amino-terminated polyether, and 14 to 16 parts of 4,4'-bis-sec-butylaminodiphenylmethane , 20-25 parts of softener, 15-18 parts of fumed silica, 0.2-0.4 parts of modified active polyamide wax powder, 0.3-0.5 parts of silane coupling agent, 0.1-0.2 parts of bismuth isooctanoate.

[0047] The preparation steps of the A component are as follows:

[0048] Keeping normal temperature, slowly add 3 parts of diisocyanate to 40 parts of di-amino-terminated polyether, react for about 2h, and then add 14 parts of 4,4'-bis-sec-butylaminodiphenylmethane, 20 parts of softener, gas phase 18 parts of silicon dioxide, 0.3 parts of modified acti...

Embodiment 3

[0058] Example 3 A polyurethane non-curing waterproof coating and its production process

[0059] The polyurethane non-curing waterproof coating includes two components A and B, and the mass ratio during construction is A:B=1:0.5.

[0060] The A component, in parts by weight, includes the following components: 3 to 4 parts of diisocyanate, 40 to 50 parts of di-amino-terminated polyether, and 14 to 16 parts of 4,4'-bis-sec-butylaminodiphenylmethane , Softener 20-25 parts, fumed silica 15-18 parts, modified active polyamide wax powder 0.2-0.4 parts, silane coupling agent 0.3-0.5 parts, 2,4-dihydroxybenzophenone 0.5- 1 part, 2 to 3 parts of fatty acid amide, 1 to 2 parts of alkylamine, 0.5 to 1 part of 10,10'-oxobisphenoxa.

[0061] The preparation steps of the A component are as follows:

[0062] Keeping room temperature, slowly add 4 parts of diisocyanate to 47 parts of di-amino-terminated polyether, react for about 2h, and then add 15 parts of 4,4'-bis-sec-butylaminodiphenylmethane, ...

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Abstract

The invention provides a non-cured polyurethane waterproofing coating which comprises a component A and a component B, wherein the mass ratio of the two components A and B is 1:(0.4-0.5); the component A comprises diisocyanate, binary amine-terminated polyether, N,N'-di-sec-butyl-4,4'-methylenedianiline, a softening agent, fumed silica, modified activated polyamide wax powder, a silane coupling agent and bismuth iso-octoate. The invention has the following advantages that the waterproofing coating can be constructed at normal temperature, and as compared with heating construction of the conventional non-cured products, construction of the waterproofing coating is more convenient and energy-saving; the waterproofing coating disclosed by the invention can be subjected to spray construction in a large area and knife-coat application, and the defect that detail nodes of the conventional product are difficult to treat is overcome.

Description

Technical field [0001] The invention relates to a polyurethane non-curing waterproof coating and its production process, belonging to the field of building waterproof materials. Background technique [0002] The biggest problem of waterproofing is water channeling, but it is difficult to achieve full adhesion of the coil. Once a point is damaged, the entire waterproof layer will fail. It is also difficult to find the leaks with timely repairs. Non-curing coatings complement the advantages of waterproofing membranes with their excellent creep properties, bonding properties and self-healing properties, and their combined construction has been widely promoted and praised. [0003] However, the current non-curing coatings are generally asphalt-based. Among them, hot-melt non-curing coatings must be heated to above 180°C before construction. The spraying equipment is bulky, the handling of detailed nodes is troublesome, and a lot of asphalt fumes will be generated during construction....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/12C09D7/61C09D7/65C08G18/66C08G18/50C08G18/32C08G18/12C08G18/48C08G18/61C08G18/54
CPCC08G18/12C08G18/3228C08G18/4027C08G18/4825C08G18/5021C08G18/542C08G18/61C08G18/6685C08K3/346C08K3/36C09D175/12
Inventor 王威孟祥雪许渊张冬冬刘晓东王永换张金涛郑玉清
Owner WEIFANG HONGYUAN WATERPROOF MATERIAL