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Preparation method for immature soil waterproof heat insulation coating

A technology of thermal insulation coating and raw soil, which is applied in the field of green building materials and can solve problems such as poor water resistance and poor thermal insulation performance

Inactive Publication Date: 2017-09-08
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, overcome the disadvantages of poor water resistance and thermal insulation performance of existing raw soil materials, and provide a preparation method of raw soil waterproof and thermal insulation coatings, which is beneficial to significantly improve the raw materials. Water resistance and thermal insulation properties of soil materials

Method used

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  • Preparation method for immature soil waterproof heat insulation coating
  • Preparation method for immature soil waterproof heat insulation coating
  • Preparation method for immature soil waterproof heat insulation coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 0.1g12mol / L hydrochloric acid to 80g tetraethyl orthosilicate, stir at room temperature for 28min and then let it stand for 35min, then add 0.14 sodium hydroxide, stir until it is completely dissolved, and get the wet gel after standing the above solution for 2h. Add 0.2g methacryloyloxyethyl dodecyltrimethyl ammonium chloride to the gel, after standing for 6h, place the product in CO 2 In a supercritical high-pressure extraction device, CO 2 As the medium, perform supercritical drying at a temperature of 33°C and an air pressure of 7 MPa for 3 hours to obtain silica airgel. Dissolve 0.1g of sodium lauryl sulfate in 50g of deionized water, and dissolve 10g of silica airgel After wetting with 50g of absolute ethanol, add it into sodium lauryl sulfate, stir and sonicate for 60min. Then it was transferred to a four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel and a thermometer, filled with nitrogen for 30 minutes to exclude air, and grad...

Embodiment 2

[0030] Add 0.8g of 12mol / L hydrochloric acid to 110g of ethyl orthosilicate, stir at room temperature for 30min and let it stand for 150min, then add 0.01sodium hydroxide, stir until it is completely dissolved, and get the wet gel after the above solution is left for 3h. Add 0.6g of methacryloyloxyethyl dodecyltrimethyl ammonium chloride to the gel, after standing for 3h, place the product in CO 2 In a supercritical high-pressure extraction device, CO 2 As the medium, perform supercritical drying at a temperature of 46°C and an air pressure of 8 MPa for 3 hours to obtain silica airgel. Dissolve 0.3g of sodium lauryl sulfate in 100g of deionized water, and 15g of silica airgel After wetting with 54g of absolute ethanol, add it into sodium lauryl sulfate, stir and sonicate for 25min. Then it was transferred to a four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel and a thermometer, filled with nitrogen for 30 minutes to exclude air, and gradually he...

Embodiment 3

[0032] Add 0.2g of 12mol / L hydrochloric acid to 150g of ethyl orthosilicate, stir at room temperature for 5 minutes and let it stand for 180 minutes, then add 0.16 sodium hydroxide, stir until it is completely dissolved, and leave the above solution for 6 hours to obtain a wet gel. Add 0.7g methacryloyloxyethyl dodecyltrimethyl ammonium chloride to the gel, after standing for 5h, put the product in CO 2 In a supercritical high-pressure extraction device, CO 2 As the medium, perform supercritical drying at a temperature of 50°C and an air pressure of 9MPa for 3 hours to obtain silica airgel. Dissolve 0.5g sodium lauryl sulfate in 65g deionized water, and dissolve 18g silica airgel After wetting with 53g of absolute ethanol, add it into sodium lauryl sulfate, stir and sonicate for 52min. Then it was transferred to a four-neck flask equipped with a stirrer, a reflux condenser, a dropping funnel and a thermometer, filled with nitrogen for 30 minutes to exclude air, and gradually ...

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Abstract

The invention discloses a preparation method for an immature soil waterproof heat insulation coating. The preparation method comprises the following steps: enabling methylacryloyl oxyethyl dodecyl trimethyl ammonium chloride to be adsorbed to the surface of wet gel; after the supercritical drying, using unsaturated bonds on the methylacryloyl oxyethyl dodecyl trimethyl ammonium chloride molecules adsorbed to the aerogel surface by the electrostatic attraction effect to be copolymerized with methyl methacrylate in an emulsion system, and introducing copolymer molecular chains to the aerogel surface. In the technical solution, all copolymer macromolecular chains are packaged on the aerogel framework surface, so a coating product keeps a three-dimensional net-like structure, and has the perfect thermal insulation property.

Description

[0001] The application of the present invention is a divisional application of the parent application "raw soil waterproof thermal insulation coating and its preparation method". The application number of the parent application is 201610028276X, and the application date is January 16, 2016. technical field [0002] The invention belongs to the technical field of green building materials, and more specifically relates to a preparation method of raw soil waterproof and thermal insulation coating. Background technique [0003] Raw earth building generally refers to the undisturbed soil materials that have not been roasted but only processed in a simple and dense manner to create a building with a main structure. Adobe architecture is one of the oldest and still widely used building types. Because raw soil is widely distributed, it is convenient to take soil, economical and practical, and the buildings built with raw soil have the characteristics of being warm in winter and cool...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D7/12C08F220/14C08F220/34C01B33/16
CPCC01B33/163C04B41/4857C04B41/63C08F220/14C08K3/36C08K9/04C09D7/62C09D133/12C08F220/34Y02P20/54
Inventor 李洪彦刘洪丽李婧李亚静杨久俊张磊
Owner TIANJIN CHENGJIAN UNIV