Special finishing agent for concrete permeable pavement and preparation method of special finishing agent

A permeable pavement and concrete technology, applied in coatings, polyurea/polyurethane coatings, climate change adaptation, etc., can solve problems affecting the service life of pavements, poor water resistance, poor stain resistance, and low concrete adhesion, and achieve improved use Long life, good weather resistance, improved mechanical strength and wear resistance

Active Publication Date: 2022-07-05
江苏佳境生态工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing permeable concrete surface agents on the market are mainly based on acrylic acid systems, which also have poor water resistance and stain resistanc

Method used

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  • Special finishing agent for concrete permeable pavement and preparation method of special finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Embodiment 1:

[0028] A special covering agent for concrete permeable pavement, the covering agent is composed of the following components in parts by weight: 80 parts of organosilicon modified water-based polyurethane emulsion; red attapulgite / SiO 2 20 parts of composite aqueous slurry.

[0029] The synthesis steps of the above-mentioned special covering agent for concrete permeable pavement are as follows:

[0030] (1) Preparation of silicone-modified waterborne polyurethane emulsion

[0031] 200g isophorone diisocyanate, 200g hexamethylene diisocyanate and 418g polytetrahydrofuran ether diol with a molecular weight of 1000 were stirred and reacted at 85°C for 2 hours, and 70g of dimethylolpropionic acid hydrophilic chain extender and molecular weight were added. 10g of poly(diethoxysiloxane) cross-linking modifier of 400, continue to stir for 1 hour, add 10g of organic bismuth catalyst and a certain amount of acetone to adjust the viscosity, continue to stir for 2...

Example Embodiment

[0036] Embodiment 2:

[0037] A special covering agent for concrete permeable pavement and a synthesis method thereof, comprising the following components in parts by weight: 55 parts of organosilicon-modified water-based polyurethane emulsion; red attapulgite / SiO 2 45 parts of composite aqueous slurry.

[0038] The synthesis steps of the above-mentioned special covering agent for concrete permeable pavement are as follows:

[0039] (1) Preparation of silicone-modified waterborne polyurethane emulsion

[0040] 150 g of 4,4'-dicyclohexylmethane diisocyanate, 200 g of methylcyclohexyl diisocyanate, 160 g of polytetrahydrofuran ether glycol with a molecular weight of 1000, and 330 g of polytetrahydrofuran ether glycol with a molecular weight of 2000 were stirred and reacted at 85°C for 1 hour , add 50g of dimethylolpropionic acid hydrophilic chain extender and 34g of poly(diethoxysiloxane) crosslinking modifier with a molecular weight of 1200, continue to stir and react for 0.5...

Example Embodiment

[0045] Embodiment 3:

[0046] A special covering agent for concrete permeable pavement, which is composed of the following components in parts by weight: 30 parts of silicone-modified water-based polyurethane emulsion; red attapulgite / SiO 2 70 parts of composite aqueous slurry.

[0047] The synthesis steps of the above-mentioned special covering agent for concrete permeable pavement are as follows:

[0048] (1) Preparation of silicone-modified waterborne polyurethane emulsion

[0049] 150 g of isophorone diisocyanate, 150 g of 4,4'-dicyclohexylmethane diisocyanate and 480 g of polytetrahydrofuran ether diol with a molecular weight of 2000 were stirred and reacted at 85° C. for 0.5 hours, and dimethylolpropionic acid was added for hydrophilic expansion. 80g of chain agent and 50g of poly(diethoxysiloxane) cross-linking modifier with molecular weight of 3200 were added. After the reaction was continued for 1 hour, 4g of organic bismuth catalyst and a certain amount of acetone ...

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Abstract

The invention discloses a special finishing agent for a concrete permeable pavement and a preparation method of the special finishing agent. The finishing agent is prepared from the following components in parts by weight: 30-95 parts of organic silicon modified waterborne polyurethane emulsion; and 5-70 parts of red attapulgite/SiO2 composite aqueous slurry. The prepared special cover agent for the concrete permeable pavement is reddish brown in appearance, and the solid content is gt; the anti-fouling paint has the advantages of strong binding force with concrete, high wear resistance, good water resistance, excellent anti-fouling performance and the like, is green and environment-friendly, and has a wide market prospect.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a special covering agent for concrete permeable pavement and a preparation method thereof. Background technique [0002] In October 2015, the General Office of the State Council issued the "Guiding Opinions on Promoting the Construction of Sponge City", through the construction of "sponge city" to effectively control rainwater runoff and realize the urban development mode of natural accumulation, natural infiltration and natural purification. In the construction of "sponge city", in addition to permeable concrete, pervious concrete finish is also an important material, which is used for the decoration and protection of permeable concrete surface, and improves the aesthetics and wear resistance of concrete surface. [0003] The existing permeable concrete finish on the market is mainly based on acrylic system, but also has defects such as poor water resistance and stain...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/61C08G18/61
CPCC09D175/08C09D7/61C08G18/61C08K3/346C08K3/36Y02A30/60
Inventor 周瑾谢波张世忠
Owner 江苏佳境生态工程技术有限公司
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