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Acid-and-alkali-resistant root-puncture-resistant polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and root puncture technology, applied in polyurea/polyurethane coatings, coatings and other directions, can solve the root puncture of strong impact plants and other problems, achieve dense coating film without bubbles, easy maintenance, excellent waterproof and impermeability. Effect

Inactive Publication Date: 2018-05-18
唐山德生科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that the existing single-component polyurethane waterproof coating is easily punctured by the roots of strong impact plants, the invention provides a polyurethane waterproof coating resistant to acid and alkali and root puncture and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: A polyurethane waterproof coating resistant to acid and alkali and root puncture, including the following raw materials in parts by weight: 5-200 parts of isocyanate, 10-600 parts of trifunctional polyether, 10-600 parts of bifunctional polyether, latent curing 0.1-8 parts of agent, 0.1-8 parts of chemical root inhibitor, 0.1-15 parts of defoamer, 0.1-15 parts of dispersant, 0.1-15 parts of leveling agent, 0.1-15 parts of accelerator, 10-800 parts of filler , 0.1-30 parts of pigments, 0.1-3 parts of catalysts, 0.1-5 parts of fumed silica, 5-150 parts of plasticizers, and 5-190 parts of diluents; the molecular weight of the trifunctional polyether is 3000-5000 , the molecular weight of the two-functional polyether is 1000-2000; the filler is one or more of heavy calcium, talcum powder, calcined kaolin, titanium dioxide, the mesh number is 800 mesh and 1250 mesh; the isocyanate is toluene Diisocyanate or diphenylmethane diisocyanate; Described leveling agent...

Embodiment 2

[0035] Embodiment 2: A polyurethane waterproof coating resistant to acid and alkali and root puncture, including the following raw materials in parts by weight: 85 parts of isocyanate, 135 parts of trifunctional polyether, 400 parts of bifunctional polyether, 5 parts of latent curing agent, chemical barrier 4 parts of root agent, 8 parts of defoamer, 8 parts of dispersant, 4 parts of leveling agent, 3 parts of accelerator, 440 parts of filler, 8 parts of pigment, 1 part of catalyst, 3 parts of fumed silica, 75 parts of plasticizer parts, 95 parts of diluent.

Embodiment 3

[0036] Embodiment 3: a kind of method for preparing the polyurethane waterproof coating of acid and alkali resistance and root puncture, its steps are as follows:

[0037] S1: Add polyether, plasticizer, and dispersant to the reactor;

[0038] S2: Start to heat up to 80°C-110°C;

[0039] S3: adding fillers, dyes, fumed silica;

[0040] S4: Constant temperature 110°C, vacuum dehydration for 2 hours; vacuum negative pressure should reach -0.09Mpa, moisture requirement ≤500ppm;

[0041] S5: Cool down to 70°C;

[0042] S6: adding isocyanate;

[0043] S7: heat up to 75-80°C;

[0044] S8: Constant temperature reaction for 2-3 hours;

[0045] S9: Cool down to 60°C;

[0046] S10: Add latent curing agent, defoamer, catalyst, chemical root inhibitor, leveling agent, accelerator, thinner;

[0047] S11: defoaming for 0.5-1 hour;

[0048] S12: A polyurethane waterproof coating resistant to acid and alkali and root puncture is prepared.

[0049] The acid, alkali and root puncture-r...

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PUM

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Abstract

The invention relates to an acid-and-alkali-resistant root-puncture-resistant polyurethane waterproof coating, which is made from trifunctional polyether, bifunctional polyether, isocyanate, a latentcuring agent, a chemical root retarder, an antifoaming agent, a dispersant, a levelling agent, a plasticizer, an accelerating agent, a filling material, a pigment, a catalyst, fumed silica and a diluent. The coating is high in strength, the coating film is compact and is free of bubbles or seams, and the coating is convenient and reliable to apply and can form a whole body together with the structure base. The coating has physical and chemical root retardant effect, is good in root puncture resistance, and excellent in waterproofness and impervious performance. The coating has anti-channelingperformance. When leaking happens, leakage points are easy to find, and the coating is convenient to maintain.

Description

technical field [0001] The invention relates to the technical field of waterproof coatings, in particular to an acid-base and root-puncture-resistant polyurethane waterproof coating and a preparation method thereof. Background technique [0002] 1. With the development of society in China, the number of available planting and greening areas in cities is decreasing. It is a luxury for ordinary residents to have their own planting yard in the city. This research and development product can be used in roof development projects, building top planting. [0003] 2. Planting roofs can increase urban green coverage, slow down the "heat island effect", reduce air pollution, save energy, and improve the ecological environment of the entire city. However, the plant roots of planting roofs have a strong penetrating ability, and they can penetrate the roof Severe water leakage caused by the structural layer. [0004] 3. In recent years, planting roofs are mainly made of coiled materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/61C09D7/63C09D7/20C08G18/48C08G18/76
CPCC09D175/08C08G18/4812C08G18/7614C08G18/7671C08K2003/2241C08K2003/265C08L91/00C08K13/02C08K5/12C08K3/26C08K3/34C08K3/346C08K3/22C08K3/36
Inventor 曹梦岩刘磊郑孟臣刘艳娜
Owner 唐山德生科技有限公司
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