A kind of one-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof, single-component technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of low tensile strength, poor erosion resistance and wear resistance, and easy appearance of coating films, etc., to achieve improved Effects of mechanical properties and foreign body puncture resistance, excellent mechanical properties and foreign body puncture resistance, good flexibility and elongation at break
CN110684457BActive Publication Date: 2021-07-09上海固密特新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
上海固密特新材料科技有限公司
Publication Date
2021-07-09

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Abstract

The invention provides a single-component polyurethane waterproof coating and a preparation method thereof, belonging to the technical field of waterproof coatings. The one-component polyurethane waterproof coating provided by the present invention includes the following raw materials in parts by mass: 15-20 parts of diisocyanate; 30-45 parts of polyether polyol; 6-10 parts of castor oil modified polyol; 10-15 parts; 10-15 parts of filler; 2-8 parts of latent curing agent; 0.03-0.3 parts of organic acid; 0.1-0.2 parts of catalyst; 0.4-0.6 parts of defoamer; The ether polyol is a mixture of epoxy propylene polyether diol, epoxy propylene polyether triol, polytetramethylene glycol and bisphenol A polyether polyol. The one-component polyurethane waterproof coating provided by the invention has excellent mechanical properties, the tensile strength is over 20 MPa, the elongation at break is greater than 450%, the tear strength is 55 N / mm, and the surface drying time is short.
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Description

technical field

[0001] The invention relates to the technical field of waterproof coatings, in particular to a single-component polyurethane waterproof coating and a preparation method thereof. Background technique

[0002] In recent years, extreme weather has occurred more and more frequently, which puts forward higher requirements for the waterproof protection of hydraulic structures, especially the waterproof protection of hydraulic structures in the severe cold areas of Northwest my country is particularly important. Therefore, it is urgent to further research and develop waterproof coatings suitable for hydraulic structures in special areas.

[0003] One-component polyurethane waterproof coatings are favored by many due to their convenient construction, no need for measurement, and excellent performance, and are expected to be used in hydraulic structures in special areas. However, at present, single-component polyurethane coatings generally have shortcomings such as l...

Claims

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