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A high-strength, hydrophobic expanded perlite insulation board and its preparation method

A technology of perlite thermal insulation board and expanded perlite is applied in the field of new building exterior wall thermal insulation materials, which can solve the problems of affecting construction and application, large strength loss, easy return of materials to alkali, etc., and achieves convenient installation and construction, good hydrophobicity, and bulk density. low effect

Inactive Publication Date: 2016-05-04
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of perlite insulation board using water glass as adhesive also has natural defects such as relatively low strength, high water absorption rate, large strength loss after water absorption and drying, and the material is easy to return to alkali when it is wet, which greatly affects its external wall insulation. construction applications in

Method used

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  • A high-strength, hydrophobic expanded perlite insulation board and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A high-strength, hydrophobic expanded perlite insulation board is made of the following raw materials in parts by weight: 40-60 parts of expanded perlite, 45-49 parts of modified water glass, 1-2 parts of curing agent, and 0 parts of ultrafine active filler -3 copies.

[0033] The modified water glass is made of the following raw materials in parts by weight: span6010-15 parts, tween6010-15 parts, polydimethylsiloxane 20-30 parts, deionized water 45-55 parts, alkali-resistant TRC 30-50 parts of flexible acrylic emulsion, 60-80 parts of water glass, and 1-2 parts of water glass reinforcing agent.

[0034] The water glass reinforcing agent is at least one of ethyl formate, ethyl acetate, propyl acetate and propyl propionate.

[0035] The preferred modulus of the water glass is 2.5-3.0, the Baume degree is 40-45°Bé, and the water content is 45-50%.

[0036] The curing agent is at least one of sodium fluorosilicate, sodium dihydrogen phosphate, sodium pyrophosphate, sodiu...

Embodiment 2

[0053] A high-strength, hydrophobic expanded perlite insulation board is made of the following raw materials in parts by weight: 40g of expanded perlite, 45g of modified water glass, and 1g of sodium fluorosilicate.

[0054] A modified water glass made from the following raw materials in parts by weight: span6010g, tween6010g, polydimethylsiloxane 20g, deionized water 45g, alkali-resistant TRC flexible acrylic emulsion 30g, water glass 60g, ethyl formate 1g .

[0055] The preferred modulus of water glass is 2.5, the Baume degree is 40°Bé, and the moisture content is 45%.

[0056] The preferred bulk density of expanded perlite is 80kg / m 3 , the particle size is 1±0.5mm.

[0057] The specific operation steps are:

[0058] a. Add expanded perlite weighed in parts by weight to the humidifying mixer, then add sodium fluorosilicate curing agent and ultrafine active filler weighed in parts by weight, and turn on the mixer motor to mix 3min, make it mix evenly;

[0059] b. Fill t...

Embodiment 3

[0071] A high-strength, hydrophobic expanded perlite insulation board is made of the following raw materials in parts by weight: 41g of expanded perlite, 46g of modified water glass, 1.1g of sodium dihydrogen phosphate, and 0.2g of white carbon black.

[0072] A modified water glass made from the following raw materials in parts by weight: span6011g, tween6011g, polydimethylsiloxane 22g, deionized water 47g, alkali-resistant TRC flexible acrylic emulsion 34g, water glass 64g, ethyl acetate 1.2 g.

[0073] The preferred modulus of water glass is 2.6, the Baume degree is 41°Bé, and the moisture content is 46%.

[0074] The preferred bulk density of expanded perlite is 81kg / m 3 , the particle size is 1±0.5mm.

[0075] The specific operation steps are:

[0076] a. Add expanded perlite weighed in parts by weight to the V-type humidifying mixer, then add sodium fluorosilicate curing agent and ultrafine active filler weighed in parts by weight, and turn on the mixer Motor mixing ...

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Abstract

The invention discloses a high-strength hydrophobic expanded perlite heat insulation plate. The high-strength hydrophobic expanded perlite heat insulation plate is prepared from the following raw materials in parts by weight: 40-60 parts of expanded perlite, 45-49 parts of modified water glass, 1-2 parts of a curing agent and 0-3 parts of ultrafine active filler, wherein the modified water glass is prepared from the following raw materials in parts by weight: 10-15 parts of span 60, 10-15 parts of tween 60, 20-30 parts of polydimethylsiloxane, 45-55 parts of deionized water, 30-50 parts of alkali-resistant TRC flexible acrylic emulsion, 60-80 parts of water glass and 1-2 parts of a water glass reinforcing agent. Compared with the prior art, the modified perlite heat insulation plate prepared according to the invention has the advantages of low volume weight, high strength, good hydrophobicity, low heat conduction coefficient and the like, simultaneously has the fire resistance of A1 level which is absent in an organic heat insulation plate, is further convenient to mount and construct and suitable for exterior wall heat insulation systems of buildings, and can meet using requirements of existing roof and wall heat insulation systems.

Description

technical field [0001] The invention belongs to the technical field of novel building exterior wall thermal insulation materials, and in particular relates to a high-strength, hydrophobic expanded perlite thermal insulation board and a preparation method thereof. Background technique [0002] In today's society, developed countries have paid unprecedented attention to energy conservation. my country's current heating energy consumption per unit building area is equivalent to 3-4 times that of developed countries with similar climate conditions. China is a country that is relatively scarce in energy, so it is reasonable to use energy. Improving energy utilization rate is the fundamental plan of social development in our country, and the improvement of energy-saving technology of building exterior wall enclosure structure and the renewal of thermal insulation materials are of great significance to the reduction of social and building energy consumption. [0003] In the hot summ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B14/18
Inventor 赵毅张志湘吴照洋
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD