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A kind of one-component root puncture resistant waterproof coating and preparation method thereof

A waterproof coating and root puncture-resistant technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problem of unsatisfactory tensile strength, bond strength, and elongation at break, roof eradication, and expensive repairs Restructuring cost, no root puncture resistance and other problems, to achieve the effect of enhanced waterproof effect, excellent root resistance performance, and reduced water absorption

Active Publication Date: 2021-01-05
黄冈凯伦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the roof greening system of buildings generally adopts ordinary waterproof coatings, which either have no root puncture resistance or have root puncture resistance, but waterproof coatings with root puncture resistance. The tensile strength, bonding strength, elongation at break The technical indicators of physical performance such as rate have not achieved the desired effect, so the root system of the plants planted on the roof greening will eventually penetrate the waterproof coating layer, resulting in waterproof failure.
Once the roof leaks, it will face a series of catastrophic problems of eradicating and repairing the entire roof, which will inevitably result in high repair and reconstruction costs
At the same time, the current waterproof coatings with root puncture resistance generally adopt the addition of root inhibitors to achieve root puncture resistance, such as adding root inhibitors such as (R)-2-(4-chloro-2-methylphenoxy) octyl propionate, However, this type of root inhibitor has high cost, is difficult to prepare, contains halogen elements, and is not conducive to environmental protection.

Method used

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  • A kind of one-component root puncture resistant waterproof coating and preparation method thereof
  • A kind of one-component root puncture resistant waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This example provides a one-component root puncture-resistant waterproof coating. The raw materials include: 7 parts of TDI80, 15 parts of polyether 330N, 15 parts of polyether 1000, 0.5 parts of γ-aminopropyltriethoxysilane, surface amination 1 part of boron nitride, 2 parts of clearlink1000, 3 parts of latent curing agent 401, 30 parts of filler (50% of heavy calcium and talcum powder), 15 parts of DINP, 0.1 part of dibutyltin dilaurate.

[0040] Its preparation method comprises the following steps: dehydrating surface aminated boron nitride, polyether 330N and polyether 1000 in vacuum at 120°C and -0.1Mpa until the moisture content is lower than 0.05%, and then adding γ-aminopropyl triethyl Oxy-silicon and TDI80, react at 80°C for 3 hours, then add clearlink 1000 for chain extension reaction, react for 1.5 hours, titrate with NCO until the NCO content is 2.5%, stop the reaction, make a prepolymer, and then add it for drying and dehydration The filler and the remainin...

Embodiment 2

[0042] This example provides a one-component root puncture-resistant waterproof coating, and its raw materials include: 10 parts of MDI, 20 parts of polyether 330N, 0.5 parts of γ-aminopropyltrimethoxysilane, 1.5 parts of surface aminated boron nitride, clearlink 1 part of 3000, 3.5 parts of latent curing agent 401, 40 parts of filler (50% of heavy calcium and talcum powder), 10 parts of DINP, 0.5 part of dibutyltin dilaurate.

[0043] The preparation method includes the following steps: vacuum dehydrate the surface aminated boron nitride and polyether 330N at 120°C and -0.1Mpa until the moisture content is lower than 0.05%, and then add γ-aminopropyl trimethoxy silicon and MDI , reacted at 80°C for 3 hours, then added clearlink 3000 for chain extension reaction, reacted for 1.5 hours, titrated with NCO until the NCO content was 2.8%, stopped the reaction, made a prepolymer, and then added the dried and dehydrated filler and the remaining raw materials , mixed to make the one-...

Embodiment 3

[0045] This example provides a one-component root puncture-resistant waterproof coating. The raw materials include: 9 parts of TDI80, 10 parts of polyether 2000, 18 parts of polyether 1000, 0.8 parts of γ-aminopropyltriethoxysilane, surface hydroxylation 2 parts of boron nitride, 1.5 parts of jefflink7544, 3 parts of latent curing agent 401, 35 parts of filler (50% of heavy calcium and talcum powder), 8 parts of DINP, 0.3 parts of dibutyltin dilaurate.

[0046] The preparation method comprises the following steps: vacuum dehydrating surface hydroxylated boron nitride, polyether 2000 and polyether 1000 at 120°C and -0.1Mpa until the moisture content is lower than 0.05%, and then adding γ-aminopropyl triethyl Oxy-silicon and TDI80, react at 80°C for 3 hours, then add jefflink754 for chain extension reaction, react for 1.5 hours, titrate with NCO until the NCO content is 3.2%, stop the reaction, make a prepolymer, and then add drying and dehydration The filler and the remaining r...

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Abstract

The invention discloses a one-component root puncture-resistant waterproof coating and a preparation method thereof. The raw materials include polyisocyanate, polyol, chain extender, amino latent curing agent, compound represented by formula (I), surface hydroxyl and / or or surface aminated boron nitride; R 1 ‑(CH 2 ) n ‑Si(OR 2 ) 3 (I), R 1 is amino or hydroxyl, R 2 for C 1‑6 Alkyl or -R 3 ‑O‑R 4 , R 3 , R 4 be independently selected from methyl group, ethyl group or propyl group; the charging amount of surface functionalized boron nitride and compound shown in formula (I) accounts for 1-5% and 0.5-3% of the total raw material charging amount respectively; preparation: Polyol, polyisocyanate, compound represented by formula (I) and surface hydroxyl group and / or aminated boron nitride are mixed and reacted, and then reacted with a chain extender to obtain a prepolymer, which is mixed with the remaining raw materials to prepare; Without adding root inhibitor, it can also have both environmental protection performance and excellent root resistance performance, high strength and good elongation.

Description

technical field [0001] The invention belongs to the field of building waterproofing, in particular to a single-component root puncture-resistant waterproof coating and a preparation method thereof. Background technique [0002] Waterproof coating The waterproof film formed by the coating on the base layer after curing has certain strength, good extensibility, crack resistance, impermeability and weather resistance, and has good temperature adaptability, easy operation and easy maintenance and maintenance. Compared with the waterproof membrane, the waterproof coating has strong adaptability to the base layer, and the waterproof layer has no seams, which is more reliable. Due to the above characteristics, waterproof coating is one of the main waterproof materials often used in waterproofing engineering. [0003] At present, the roof greening system of buildings generally adopts ordinary waterproof coatings, which either have no root puncture resistance or have root puncture ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/08C09D175/06C09D7/62C09D7/63
CPCC09D175/08C09D175/06C09D7/62C09D7/63C08K2003/385C08K9/02C08K9/04C08K3/38C08K5/544
Inventor 贺小钢李忠人赵祖兵徐加康李俊
Owner 黄冈凯伦新材料有限公司
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