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A kind of modified polyurethane waterproof coating

A polyurethane waterproofing and coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of volatilization, lack of strength and high cost of toluene diisocyanate, so as to reduce costs, improve comprehensive performance, reduce toxic effects

Active Publication Date: 2014-10-08
铁科创恒新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the current polyurethane waterproof coatings, TDI-type modified polyurethane waterproof coatings (toluene diisocyanate modified polyurethane waterproof coatings) are the main ones. For this type of coatings, although they meet the requirements of GB / T 19250-2003, toluene Diisocyanate is volatile, so it is highly toxic, and the cost of toluene diisocyanate is relatively high; moreover, for some construction occasions with high strength requirements, the strength of TDI modified polyurethane waterproof coating is still high. lacking

Method used

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  • A kind of modified polyurethane waterproof coating
  • A kind of modified polyurethane waterproof coating

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Embodiment 1

[0015] In embodiment one, this modified polyurethane waterproof paint comprises first component and second component; Described first component and second component mass ratio are 1:2;

[0016] The component A includes: 10% (mass fraction) of diphenylmethane diisocyanate, 5% toluene diisocyanate, 75% polyether, and 10% 200# solvent oil;

[0017] Wherein, the polyether includes polyether 210, polyether 220, and polyether 230, each accounting for 15%, 40%, and 20% by mass of the first component.

[0018] The B component includes: coumarone 40% (mass fraction), talc powder 25%, silica fume powder 15%, calcium hydroxide 19%, triethylenediamine 1%.

Embodiment 2

[0020] In embodiment two, this modified polyurethane waterproof paint comprises first component and second component; Described first component and second component mass ratio are 1:2;

[0021] The component A includes: 15% (mass fraction) of diphenylmethane diisocyanate, 7% toluene diisocyanate, 70% polyether, and 8% 200# solvent naphtha;

[0022] Wherein, the polyether includes polyether 210, polyether 220, and polyether 230, each accounting for 15%, 35%, and 20% by mass of the first component.

[0023] The B component includes: coumarone 40% (mass fraction), talc powder 25%, silica fume powder 15%, calcium hydroxide 19%, triethylenediamine 1%.

[0024] The difference between the second embodiment and the first embodiment lies in the adjustment of the first component, wherein the adjustment of the content ratio of diphenylmethane diisocyanate and toluene diisocyanate is the basis, and other raw materials are based on this Make adaptive adjustments.

[0025] This modified p...

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Abstract

The invention provides a modified polyurethane waterproof paint which comprises a component A and a component B in a mass ratio of 1:2, wherein the component A comprises 10-15% (by mass) of diphenylmethane diisocyanate, 5-8% of methylbenzene diisocyanate, 65-75% of polyether and 8-12% of 200# solvent oil; and the component B comprises 35-40% (by mass) of coumarone, 20-30% of talcum powder, 14-16% of silicon ash powder, 18-22% of calcium hydroxide and 0.5-1% of triethylenediamine. Compared with the common polyurethane waterproof paint, the waterproof paint provided by the invention has the advantages of low volatilization tendency, low toxicity, low cost, high comprehensive mechanical properties and stable properties.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a polyurethane waterproof coating. Background technique [0002] The current polyurethane waterproof coatings are mainly isocyanate group-containing prepolymers formed by addition polymerization of isocyanate and polyether, together with catalysts, anhydrous additives, anhydrous fillers, solvents, etc., after mixing and other processes Processed coatings. This type of coating is a reaction-curing (moisture-curing) coating, which has the characteristics of high strength, high elongation, and good water resistance. It has strong adaptability to the deformation of the base layer. [0003] For polyurethane waterproof coatings, it is usually divided into single-component and multi-component, and most of them are two-component. In two-component modified polyurethane waterproof coatings, the type and proportion of each component will affect the overall performance of the coating. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/76
Inventor 张金根
Owner 铁科创恒新材料科技有限公司