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Latent curing single-component polyurethane water-proof coating and preparation method thereof

A polyurethane waterproof, one-component technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of increasing the correctness of the formula and not completely solving the problem of foaming, etc., to solve the slow curing speed, reduce viscosity, improve The effect of mechanical properties

Active Publication Date: 2012-12-05
大岩(上海)建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of additives will have some negative effects on the performance of the material. For example, adding molecular sieves will make polyurethane materials brittle, and molecular sieves may release absorbed moisture in the subsequent process, which cannot completely solve the foaming problem; adding isocyanate monomers will increase The Risk of Formulation Correctness

Method used

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  • Latent curing single-component polyurethane water-proof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A latent curing one-component polyurethane waterproof coating, calculated in parts by weight, its composition and content are as follows:

[0041] 30 parts of toluene diisocyanate

[0042] 120 parts of polyether diol

[0043] 30 parts of polyether trihydric alcohol

[0044] Chlorinated paraffin 140 parts

[0045] Calcium carbonate 400 parts

[0046] Silane coupling agent 0.3 parts

[0047] Acetone-Ethylenediamine Condensate 8 parts

[0048] Catalyst 0.8 parts

[0049] Thinner 120 parts

[0050] Described catalyst is dibutyltin dilaurate;

[0051] Described diluent is 200# solvent naphtha.

[0052] The preparation method of above-mentioned a kind of latent curing one-component polyurethane waterproof coating comprises the steps:

[0053]Add 120 parts of polyether diol, 30 parts of polyether triol, 140 parts of chlorinated paraffin, and 0.3 part of silane coupling agent into the reaction kettle, start stirring, heat to 105°C to dissolve and mix for 30 minutes, an...

Embodiment 2

[0058] A latent curing one-component polyurethane waterproof coating, calculated in parts by weight, its composition and content are as follows:

[0059] 50 parts of diphenylmethane diisocyanate

[0060] 150 parts of polyether diol

[0061] 40 parts of polyether trihydric alcohol

[0062] Chlorinated paraffin 170 parts

[0063] Kaolin 500 parts

[0064] Silane coupling agent 0.5 part

[0065] Methyl isobutyl ketone-ethanolamine condensate 15 parts

[0066] Catalyst 1.1 parts

[0067] Thinner 165 parts

[0068] Described catalyst is stannous octoate;

[0069] Described diluent is solvent naphtha S150.

[0070] The preparation method of above-mentioned a kind of latent curing one-component polyurethane waterproof coating comprises the steps:

[0071] Add 150 parts of polyether diol, 40 parts of polyether triol, 170 parts of chlorinated paraffin, and 0.5 part of silane coupling agent into the reaction kettle, start stirring, heat to 105°C to dissolve and mix for 30 minut...

Embodiment 3

[0076] A latent curing one-component polyurethane waterproof coating, calculated in parts by weight, its composition and content are as follows:

[0077] 26 parts of toluene diisocyanate

[0078] 10 parts diphenylmethane diisocyanate

[0079] 150 parts of polyether diol

[0080] 30 parts of polyether trihydric alcohol

[0081] Chlorinated paraffin 160 parts

[0082] Calcium carbonate 300 parts

[0083] Talc powder 160 parts

[0084] 0.45 parts of silane coupling agent

[0085] Acetone-Ethylenediamine Condensate 5 parts

[0086] Methyl isobutyl ketone-ethanolamine condensate 5 parts

[0087] Catalyst 0.9 parts

[0088] Thinner 150 parts

[0089] The catalyst is a mixture of dibutyltin dilaurate and stannous octoate in a mass ratio of 4:5;

[0090] The diluent is calculated by mass ratio of 200# solvent oil and solvent oil S150, that is, the mixture of 200# solvent oil: solvent oil S150 is 1:1.

[0091] The preparation method of above-mentioned a kind of latent curing...

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Abstract

The invention discloses a latent curing single-component polyurethane water-proof coating and a preparation method thereof. The latent curing single-component polyurethane water-proof coating consists of the following components in parts by weight: 30-50 parts of diisocyanate, 150-190 parts of polyether polyol, 140-170 parts of chlorinated paraffin, 400-500 parts of a filler, 0.3-0.5 parts of a silane coupling agent, 8-15 parts of a latent curing agent, 0.8-1.1 parts of a catalyst and 120-165 parts of a diluting agent. The latent curing single-component polyurethane water-proof coating plays a role solving the problems of easiness in foaming in a crosslinking process and swelling and bubbling in a storing process existing in the conventional single-component moisture curing polyurethane water-proof coating, can be used for reducing the specific weight of polyurethane in the waterproof coating for reducing the cost, and has high mechanical property and low-temperature flexibility.

Description

technical field [0001] The invention relates to a one-component polyurethane waterproof coating and a preparation method thereof, in particular to a latent curing one-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproof coating is one of the important components of the application form of polyurethane synthetic materials. Polyurethane, because its coating film has elasticity and good extensibility, high tensile strength, good adhesion, small volume shrinkage, and no seams in the waterproof layer of the coating film, it has strong adaptability to the deformation of the cracks in the base layer. It has the characteristics of easy maintenance and easy construction on the surface of any base layer with complex structure. It can be used for waterproofing and plugging in different parts of buildings, so it has become one of the main materials for building waterproofing. [0003] Compared with the two-com...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D5/00
Inventor 吴蓁程雪峰孙揭阳何家旭张英强
Owner 大岩(上海)建筑材料有限公司
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