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Root-resistant environment-friendly single-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof and environmentally friendly technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve environmental problems such as non-environmental protection, achieve good root resistance, low heavy metal content, and convenient and quick construction

Pending Publication Date: 2022-03-04
LIAONING DAYU WATERPROOF TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, many of the current polyurethane waterproof coatings use the MOCA curing system, which is not environmentally friendly. Therefore, it is very necessary to study a feasible root-blocking and environmentally friendly one-component polyurethane waterproof coating.

Method used

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  • Root-resistant environment-friendly single-component polyurethane waterproof coating and preparation method thereof
  • Root-resistant environment-friendly single-component polyurethane waterproof coating and preparation method thereof
  • Root-resistant environment-friendly single-component polyurethane waterproof coating and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0045] A kind of preparation method of root-blocking environment-friendly one-component polyurethane waterproof coating as above, comprises the following steps:

[0046] Step 1. Clear the metering tank, pour in the specified amount of polyether and chlorinated paraffin in sequence according to the formula quantity, weigh them and put them into the reaction kettle, add the dispersant from the small material feeding port on the upper part of the reaction kettle, and add all the materials Finally, start stirring, control the speed within 25HZ to 40HZ, open the heating valve to heat, and raise the temperature to 70-100°C;

[0047]Step 2. Open the vacuum system, pump the negative pressure to below -0.08MPa and then close the vacuum valve;

[0048] Step 3. Inhale the powder filler and pigment through the suction valve; when the negative pressure rises to -0.05MPa, close the suction valve, open the vacuum valve to draw the negative pressure below -0.08MPa, then close the vacuum valve...

Embodiment 1

[0058] A root-resistance environment-friendly single-component polyurethane waterproof coating, the percentage by weight is:

[0059] 25% polyether, 4% isocyanate, 15% plasticizer, 42% pigment and filler, 0.16% dispersant, 3% chain extender, 0.14% catalyst, 0.2% defoamer, 0.5% Root inhibitor, 10% solvent.

[0060] A kind of preparation method of root-blocking environment-friendly one-component polyurethane waterproof coating as above, comprises the following steps:

[0061] Step 1. Clear the metering tank, pour in the specified amount of polyether and chlorinated paraffin in sequence according to the formula quantity, weigh them and put them into the reaction kettle, add the dispersant from the small material feeding port on the upper part of the reaction kettle, and add all the materials Finally, start stirring, control the speed within 25HZ to 40HZ, open the heating valve to heat, and raise the temperature to 70-100°C;

[0062] Step 2. Open the vacuum system, pump the nega...

Embodiment 2

[0075] A root-resistance environment-friendly single-component polyurethane waterproof coating, the percentage by weight is:

[0076] 24% polyether, 4.5% isocyanate, 13.5% plasticizer, 45% pigment and filler, 0.16% dispersant, 3% chain extender, 0.14% catalyst, 0.2% defoamer, 0.5% Root inhibitor, 9% solvent.

[0077] A kind of preparation method of root-blocking environment-friendly one-component polyurethane waterproof coating as above, comprises the following steps:

[0078] Step 1. Clear the metering tank, pour in the specified amount of polyether and chlorinated paraffin in sequence according to the formula quantity, weigh them and put them into the reaction kettle, add the dispersant from the small material feeding port on the upper part of the reaction kettle, and add all the materials Finally, start stirring, control the speed within 25HZ to 40HZ, open the heating valve to heat, and raise the temperature to 70-100°C;

[0079] Step 2. Open the vacuum system, pump the n...

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Abstract

The invention discloses a root-resistant environment-friendly single-component polyurethane waterproof coating and a preparation method thereof, and relates to the technical field of waterproofing of building engineering planting, and the root-resistant environment-friendly single-component polyurethane waterproof coating comprises 18-25% of polyether, 3.5-4.5% of isocyanate, 10-15% of a plasticizer, 30-45% of pigment and filler, 0.1-0.2% of a dispersant, 3-5% of a chain extender, 0.1-0.2% of a catalyst, 0.1-0.2% of a defoaming agent, 0.2-1% of a root-resistant agent and 8-10% of a solvent. Compared with a traditional product, the physical performance indexes such as strength and elongation of the root-resistant environment-friendly single-component polyurethane waterproof coating are remarkably improved, the root-resistant agent is added into the product, growth of plant roots can be effectively prevented, meanwhile, the normal growth requirement of plants can be met, and the root-resistant effect is achieved. The product does not contain harmful substances, is low in heavy metal content and is harmless to human bodies and the environment. And construction is convenient, the waterproof layer can be used after the barrel is opened on site, and a seamless high-strength root-puncture-resistant waterproof layer can be formed.

Description

technical field [0001] The invention relates to the technical field of planting waterproofing in construction engineering, in particular to a root-blocking and environment-friendly single-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] With the advancement of my country's urbanization, planting projects have gradually emerged in some cities. Planting engineering refers to planting flowers and trees on flat roofs and building roofs, and covering green vegetation to form a garden landscape and a continuous ecological environment system. At the same time, it has functions such as waterproof and moisture-proof, thermal insulation, and noise absorption. The waterproof core of this type of project is to solve the problem of plants penetrating the waterproof layer. [0003] At present, there are two types of root-resistance waterproof materials: waterproof membrane and waterproof coating, but most of the root-resistance wat...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/61C09D7/65C09D7/40
CPCC09D175/08C09D7/61C09D7/65C09D7/40C08K2003/265C08K2003/2241C08K2003/2272C08K2003/2268C08L91/06C08K3/26C08K3/34C08K3/22
Inventor 郑宪明金岩孙雪钊
Owner LIAONING DAYU WATERPROOF TECH DEV
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