Novel expanded perlite insulation board and preparation method thereof

A technology of expanded perlite and thermal insulation board, which is applied in the field of new expanded perlite thermal insulation board and its preparation, which can solve the problems of low density of expanded perlite board, high thermal conductivity of foamed cement, and high water absorption of mineral wool, and achieve material deformation The effect of small coefficient, excellent waterproof performance and excellent anti-aging performance

Inactive Publication Date: 2013-02-13
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polystyrene foam boards are flammable and may cause fires once exposed to open flames, and have been banned from use; mineral wool has a high water absorption rate, is easy to swell after absorbing water, and is easy to hollow or fall off, which has potential safety hazards; The thermal con

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1:

[0027] Mix 13kg of polyaluminum phosphate, 5kg of pure acrylic emulsion and 5kg of aluminum hydroxide in 90kg of water, and then add 75kg of expanded perlite (average particle size 2.4mm) and 2kg of polypropylene chopped fiber (15~25mm) to them. , After being fully mixed and evenly mixed, put it into the mold and press it into molding at a speed of 8mm / min. The maximum molding pressure is 0.4MPa. Finally, the molded body is dried at 150°C to obtain the finished product.

[0028] The indicators of the sample are as follows: density is 200kg / m 3 , Compressive strength is 0.4MPa, hydrophobicity is 98%, thermal conductivity is 0.058W / (m·k), non-combustible.

Example Embodiment

[0029] Example 2:

[0030] Mix 12 kg of polyaluminum phosphate, 4 kg of epoxy resin and 4 kg of iron hydroxide in 96 kg of water, and then add 80 kg of expanded perlite (average particle size 2.4 mm) to each of them. After mixing well, put them into the mold. 10mm / min speed compression molding, the maximum molding pressure is 0.6MPa. Finally, the molded body is dried at 200°C to obtain the finished product.

[0031] The various indicators of the sample are as follows: the density is 230kg / m 3 , The compressive strength is 0.42MPa, the hydrophobicity is 99%, the thermal conductivity is 0.060W / (m·k), and it is non-flammable.

[0032]

Example Embodiment

[0033] Example 3:

[0034] Mix 15 kg of aluminum dihydrogen phosphate, 8 kg of polyvinyl acetate emulsion, and 7 kg of magnesium hydroxide in 78.4 kg of water, and then add 70 kg of expanded perlite (average particle size 2.4 mm) to it, mix well, and then load In the mold, press molding at a speed of 15mm / min, and the maximum molding pressure is 1MPa. Finally, the molded body is dried at 250°C to obtain the finished product.

[0035] The indicators of the sample are as follows: density is 250kg / m 3 , Compressive strength is 0.48MPa, hydrophobicity is 99%, thermal conductivity is 0.062W / (m·k), non-combustible.

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Abstract

Provides are a novel expanded perlite insulation board and a preparation method thereof. The novel expanded perlite insulation board is mainly prepared by raw materials of 50%-80% of expanded perlite, 10%-40% of inorganic adhesive and organic adhesive, 0%-10% of fiber and 0%-10% of property-modifying additive. The novel expanded perlite insulation board uses a compression molding process and is high in production efficiency, good in size stability and low in production cost. The novel expanded perlite insulation board has excellent fireproofing safety to overcome shortcomings of poor fireproof performance, ageing resistant and environment pollution; and has excellent waterproofness and low thermal coefficients to overcome a shortcoming that a common inorganic insulation material is large in thermal coefficient and strong in water absorbability. The novel expanded perlite insulation board has excellent heat insulation performance, can achieve thermal insulation performance levels of the organic material, simultaneously has non-ignitable performance of the inorganic material, is good in durability and weather fastness, can achieve same service life of buildings, solves the problem that service life of an organic board is short, and is favorable for energy saving and environmental protection. The service life of the organic board can be asynchronous with the building.

Description

technical field [0001] The invention relates to a novel expanded perlite insulation board and a preparation method thereof. Background technique [0002] With the development of urban construction, building energy conservation has gradually come into people's sight, thus building thermal insulation has become the focus of people's attention, and building thermal insulation materials have also become an important subject. [0003] At present, the existing building exterior wall insulation boards mainly include polystyrene foam boards, rock wool boards, foamed cement, and new expanded perlite insulation systems. However, polystyrene foam boards are flammable and may cause fires once exposed to open flames, and have been banned from use; mineral wool has a high water absorption rate, is easy to swell after absorbing water, and is easy to hollow or fall off, which has potential safety hazards; The thermal conductivity is still relatively large for thermal insulation materials, ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/34
Inventor 丁向群张冷庆马煜喆李中石
Owner SHENYANG JIANZHU UNIVERSITY
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