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Preparation method of solvent-free type polyurethane waterproof paint with saline-alkaline resistance and root thorn resistance

A solvent-free polyurethane, root puncture-resistant technology, used in polyurea/polyurethane coatings, coatings, etc., can solve problems such as affecting the normal growth of plants, failure of composite salt-alkali-resistant additives, and unreasonable proportions.

Inactive Publication Date: 2017-04-26
天津市奇才防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) Affect the normal growth of plants
Improper addition of root inhibitors will affect the normal growth of plants, and even cause plant death, affecting greening projects
[0005] (3) poor salt and alkali resistance
The ratio is unreasonable, the compound salt-alkali-resistant additive is improperly selected, and the compatibility is not good, resulting in the failure of the compound salt-alkali-resistant additive
[0006] (4) Ordinary two-component anti-root thorn polyurethane waterproof coating contains organic solvents, which will cause volatilization of organic solvents during construction, resulting in pollution to the environment and harm to the human body

Method used

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  • Preparation method of solvent-free type polyurethane waterproof paint with saline-alkaline resistance and root thorn resistance
  • Preparation method of solvent-free type polyurethane waterproof paint with saline-alkaline resistance and root thorn resistance
  • Preparation method of solvent-free type polyurethane waterproof paint with saline-alkaline resistance and root thorn resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The A component is composed of the following components according to the weight ratio:

[0032]

[0033] The B component is composed of the following components according to the weight ratio:

[0034]

[0035] crafting process:

[0036] Preparation of component A:

[0037] (1) 300 parts of polyether glycol, 80 parts of polyether triol, and 1 part of stabilizer are added to the reactor.

[0038] (2) Raise the temperature to 80°C-100°C and start stirring.

[0039] (3) Vacuum dehydration and degassing for 1h~2h.

[0040] (4) When the temperature drops below 60°C, toluene diisocyanate (TDI) is added.

[0041] (5) The raw materials are reacted at 70°C to 90°C for 2h to 3h, vacuum degassed, and cooled to room temperature to obtain component A.

[0042] Preparation of component B:

[0043] (1) Add 500 parts of polyether triol and 250 parts of dioctyl phthalate into the reactor and slowly raise the temperature to 80°C.

[0044] (2) Slowly add 110 parts of mica powder, 100 parts of heavy calciu...

Embodiment 2

[0049] The A component is composed of the following components according to the weight ratio:

[0050]

[0051] The B component is composed of the following components according to the weight ratio:

[0052]

[0053] crafting process:

[0054] (1) Add 250 parts of polyether glycol, 100 parts of polyether triol, and 3 parts of stabilizer into the reactor.

[0055] (2) Raise the temperature to 80°C-100°C and start stirring.

[0056] (3) Vacuum dehydration and degassing for 1h~2h.

[0057] (4) When the temperature drops below 60°C, toluene diisocyanate (TDI) is added.

[0058] (5) The raw materials are reacted at 70°C to 90°C for 2h to 3h, vacuum degassed, and cooled to room temperature to obtain component A.

[0059] Preparation of component B:

[0060] (1) Add 550 parts of polyether triol and 200 parts of dioctyl phthalate into the reactor and slowly raise the temperature to 80°C,

[0061] (2) Slowly add 100 parts of mica powder, 110 parts of heavy calcium carbonate, 6 parts of iron oxide red...

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Abstract

The invention provides polyurethane waterproof paint with saline-alkaline resistance and root thorn resistance. The paint is a solvent-free environment-friendly type polyurethane waterproof paint. A composite saline-alkaline resisting auxiliary agent, a root blocking agent and some assistant auxiliary agents are added into the polyurethane waterproof paint for modification, mica powder is added as a filling material, in order to fill apertures in the waterproof film and increase compatibility of the film, in the condition that cost is not added, age preventing and ultraviolet resisting capability of the film are improved. Mica powder is in scale shaped, toughness in the film is improved, penetration of ultraviolet ray and moisture is prevented, crack and efflorescence are prevented, and durability and waterproofness of the film are improved. Compared with the coiled material with root thorn resistance, water resistance and root thorn resistance are good, and construction is convenient. The paint does not have any solvents, toxicity and flavor, and is environmentally friendly and green. In addition, the paint also shows good elasticity, high bond property, good construction adaptability, and other characteristic, and the paint is a novel polyurethane waterproof paint.

Description

Technical field [0001] The invention relates to a polyurethane coating, in particular to a solvent-free polyurethane waterproof coating with salt and alkali resistance and root puncture resistance. Background technique [0002] According to incomplete statistics from UNESCO and FAO, the area of ​​saline land in the world is 95438 million hectares, of which 99.13 million hectares are in my country. The formation of alkaline soil and alkaline soil in my country is mostly related to the accumulation of carbonate in the soil, so the alkalinity is generally high, which brings a lot of inconvenience to the greening and construction of saline-alkali land, so this kind of coiled material can It is suitable for saline-alkali land and can also plant some salt-tolerant plants on the surface of the coiled material to achieve the purpose of greening. The existing salt-tolerant waterproof coating has the following obvious disadvantages: [0003] (1) Low solid content. At present, the solid cont...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C08G18/48C08G18/76
Inventor 仇立静宋正红李会平夏友军李奇智延晓平
Owner 天津市奇才防水材料有限公司
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