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A kind of self-healing type polyurethane waterproof coating and preparation method thereof

A polyurethane waterproofing and coating technology, applied in polyurea/polyurethane coatings, wax coatings, coatings, etc., can solve the problems of weak waterproof coatings and inability to be used in combination, and achieve high solid content, good self-healing properties, and enhanced adhesion The effect of knot strength

Active Publication Date: 2021-08-13
大禹九鼎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

However, the polyurethane waterproof coating of the prior art still has the following problems: it cannot be used in combination with existing coils, and the strength of the non-cured rubber asphalt waterproof coating is weak.

Method used

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  • A kind of self-healing type polyurethane waterproof coating and preparation method thereof
  • A kind of self-healing type polyurethane waterproof coating and preparation method thereof
  • A kind of self-healing type polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] See Table 1 for the distribution ratio of the raw material components of the self-healing polyurethane waterproof coating in this example.

[0059] The raw material composition of table 1 embodiment 1 self-healing type polyurethane waterproof coating

[0060]

[0061]

Embodiment 2

[0063] See Table 2 for the ratio of the raw material components of the self-healing polyurethane waterproof coating in this example.

[0064] The raw material composition of table 2 embodiment 2 self-healing type polyurethane waterproof coating

[0065]

Embodiment 3

[0067] See Table 3 for the distribution ratio of the raw material components of the self-healing polyurethane waterproof coating in this example.

[0068] The raw material composition of table 3 embodiment 3 self-healing type polyurethane waterproof coating

[0069]

[0070]

[0071] The preparation method of the self-healing type polyurethane waterproof coating of embodiment 1~3 is as follows:

[0072] Preparation process of component A: According to the composition of Table 1-3, add terpene phenolic resin, chlorinated paraffin, polyadipate-1,4-butylene glycol HKP-456, polyether triol DL-3000D heats up to (115±2)°C, vacuumizes to (-0.095~-0.1) MPa, stops vacuuming after 2 hours, and when the temperature drops to 70°C, accurately adds TDI-80 and MDI, then heats up to 80°C, react for 2h, when the temperature drops to 70°C, add catalyst T-12, react for 30min, cool down to 60°C and vacuumize to (-0.095~-0.1)MPa, discharge after 10min, to obtain A component.

[0073] Prepa...

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Abstract

The invention discloses a self-healing polyurethane waterproof coating and a preparation method thereof. This self-healing polyurethane waterproof coating includes A component and B component; wherein, A component includes the following components: terpene phenolic resin, plasticizer, polyester polyol, polyether polyol A, diisocyanate , catalyst; B component includes the following components: plasticizer, asphalt, polyether polyol A, polyether polyol B, extender oil, filler, thixotropic agent, dispersant, chain extender, defoamer, Catalyst; the number average molecular weight of polyether polyol A is 2000-4000; the number average molecular weight of polyether polyol B is 300-500; the filler is alkaline earth metal hydroxide; the mass ratio of component A and component B is 1 : (2~4). The self-healing polyurethane waterproof coating of the present invention has the tensile strength of the polyurethane coating and the self-healing property of the non-cured rubber asphalt waterproof coating, and also has the characteristics of excellent bonding with the existing waterproof coiled material.

Description

technical field [0001] The invention relates to the technical field of waterproof materials, in particular to a self-healing polyurethane waterproof coating and a preparation method thereof. Background technique [0002] The leakage problem of modern buildings is ubiquitous, and building waterproofing has become a common concern in modern construction projects. In particular, modern buildings have higher requirements on the performance of waterproof materials, more comprehensive functions, and no pollution to the environment. [0003] Polyurethane waterproof coating is a relatively common waterproof material. It is mainly an isocyanate-containing prepolymer formed by addition polymerization of isocyanate and polyether, together with catalysts, additives, fillers, etc., after mixing Waterproof coating made by process. [0004] In the prior art, CN108276895A discloses a new type of polyurethane non-curing waterproof coating and its production process. agent, amine chain ext...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D191/06C09D7/61C08G18/42C08G18/48C08G18/54
CPCC08G18/4027C08G18/4238C08G18/4804C08G18/542C08K2003/2206C08L2205/035C09D175/08C09D7/61C09D7/70C08L91/06C08L95/00C08K3/22C08K7/26
Inventor 龙木钦
Owner 大禹九鼎新材料科技有限公司
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