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Nano aerogel heat insulation waterproof intermediate coating and preparation method thereof

A nano-aerogel and thermal insulation technology, applied in the field of coatings, can solve the problems of cracking of the surface coating and failure of the coating effect, and achieve the effects of convenient construction, saving labor costs, and meeting the requirements of thermal engineering design.

Active Publication Date: 2018-01-26
CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the top coat is a top coat with high emulsion content and high cohesion, there is a possibility of cracking of the top coat, resulting in failure of the coating effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The mass ratio of each component is: pure acrylic elastic waterproof emulsion: 45 parts; titanium dioxide: 2 parts; nano-aerogel: 25 parts; film-forming aid: 1 part; dispersant: 3.5 parts; defoamer: 0.5 parts ; Cellulose: 3.5 parts; Preservatives: 0.1 parts; Water: 19.4 parts.

Embodiment 2

[0018] The mass ratio of each component is: pure acrylic elastic waterproof emulsion: 35 parts; titanium dioxide: 1 part; nano-aerogel: 20 parts; film-forming aid: 1 part; dispersant: 3.5 parts; defoamer: 0.5 parts ; Cellulose: 3.5 parts; Preservatives: 0.1 parts; Water: 35.4 parts.

Embodiment 3

[0020] The mass ratio of each component is: pure acrylic elastic waterproof emulsion: 25 parts; titanium dioxide: 0 parts; nano-aerogel: 15 parts; film-forming aid: 1 part; dispersant: 3.5 parts; defoamer: 0.5 parts ; Cellulose: 2.5 parts; Preservatives: 0.1 parts; Water: 52.4 parts; Appropriate amount of PH regulator.

[0021] In the above three embodiments, the pure acrylic elastic waterproof emulsion is used as the film-forming material to ensure the adhesion and water resistance of the paint film. A small amount of titanium dioxide is used as the pigment to provide the covering power of the paint; nano-airgel is used as the heat-insulating material, which is the key to the heat-insulating paint to ensure good heat-insulating performance of the paint; the film-forming aid is selected from Eastman's alcohol ester-12, The function is to improve the film-forming performance of the pure acrylic elastic waterproof emulsion; the dispersant can be selected from conventional ammoni...

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Abstract

The invention discloses nano aerogel heat insulation waterproof intermediate coating and a preparation method thereof. The nano aerogel heat insulation waterproof intermediate coating contains the following components in parts by mass: 25-45 parts of pure acrylic elastic waterproof emulsion, 0-2 parts of titanium dioxide, 15-25 parts of nano aerogel, 0.7-1.3 parts of a coalescing agent, 3.2-3.8 parts of a dispersing agent, 0.4-0.6 part of a defoaming agent, 2.5-3.5 parts of cellulose, 0.07-0.13 part of a preservative and 19.4-52.4 parts of water. After the coating is applied to a reflective heat insulation coating intermediate coating, the heat insulation and reflection effects of the whole coating can be improved, thermal performance design requirements are met, construction is convenient, and efficiency is greatly higher than that of heat preservation putty, so that labor cost can be greatly saved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to nano-airgel heat-insulating and waterproof coatings and a preparation method thereof. technical background [0002] At present, the use of reflective thermal insulation coatings sometimes cannot meet the requirements when performing thermal calculations. It is necessary to design a layer of thermal insulation putty layer or thermal insulation mortar layer under the reflective thermal insulation coatings to meet the thermal calculation requirements. The thermal conductivity of the commonly used thermal insulation putty or thermal insulation mortar is relatively large, above 0.08W / m.K, and the construction thickness is above 20mm. The bonding strength of the thermal insulation putty layer is required to be above 0.1Mpa, which is very small and only ensures that the top coat will not fall off. If the top coat is a top coat with high emulsion content and high cohesion, there is a p...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D5/33C09D7/61C09D7/63C09D7/65
Inventor 李汉庭张明星肖萍
Owner CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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