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Lightweight expanded perlite external wall heat insulation plate

A technology of expanded perlite and external wall thermal insulation board, applied in the field of external wall thermal insulation board, can solve the problems of complicated construction, high cost, heavy weight, etc., achieve excellent thermal insulation performance, improve toughness, and prevent safety accidents.

Inactive Publication Date: 2018-09-21
安徽臻烁新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the structure without the external wall, due to the need for thermal insulation and compression resistance, the wall needs to be thickened to meet the functional requirements. Not only is it heavy, but the construction is cumbersome and costly, which needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A lightweight expanded perlite external wall insulation board, its raw materials include: pretreated expanded perlite 100kg, flax fiber 30kg, alumina fiber 20kg, carbon nanotubes 20kg, gypsum powder 10kg, expanded vermiculite powder 16kg, barite sand 8kg , fly ash 16kg, waste brick powder 4kg, calcium carbonate 14kg, basalt fiber 15kg.

[0018] The pretreated expanded perlite is prepared by the following process: mix 45kg expanded perlite, 6kg xanthan gum, and 120kg absolute ethanol, heat up to 75°C and stir for 40min, add 2kg of hydrogen peroxide solution with a concentration of 55wt% and stir for 40min, using a concentration of 25wt% Sodium hydroxide solution adjusts the pH of the system to 8.2-9, heats it for 15 hours, cools down to room temperature, uses hydrochloric acid to adjust the pH of the system to neutral, filters, washes, and dries to obtain pretreated expanded perlite.

Embodiment 2

[0020] A lightweight expanded perlite external wall insulation board, its raw materials include: pretreated expanded perlite 120kg, flax fiber 20kg, alumina fiber 40kg, carbon nanotubes 10kg, gypsum powder 20kg, expanded vermiculite powder 8kg, barite sand 16kg , fly ash 8kg, waste brick powder 10kg, calcium carbonate 6kg, basalt fiber -25kg.

[0021] The pretreated expanded perlite is prepared by the following process: mix 25kg expanded perlite, 14kg xanthan gum, and 80kg absolute ethanol, heat up to 85°C and stir for 20min, add 4kg of 35wt% hydrogen peroxide solution and stir for 60min, using a concentration of 15wt% Sodium hydroxide solution adjusts the pH of the system to 8.2-9, heats it for 25 hours, cools down to room temperature, uses hydrochloric acid to adjust the pH of the system to neutral, filters, washes, and dries to obtain pretreated expanded perlite.

Embodiment 3

[0023] A lightweight expanded perlite external wall insulation board, its raw materials include: pretreated expanded perlite 105kg, flax fiber 28kg, alumina fiber 25kg, carbon nanotubes 18kg, gypsum powder 13kg, expanded vermiculite powder 14kg, barite sand 10kg , fly ash 14kg, waste brick powder 6kg, calcium carbonate 12kg, basalt fiber 18kg.

[0024] The pretreated expanded perlite is prepared by the following process: mix 40kg of expanded perlite, 8kg of xanthan gum, and 110kg of absolute ethanol, heat up to 78°C and stir for 35min, add 2.5kg of 50wt% hydrogen peroxide solution and stir for 45min, using a concentration of 22wt% % sodium hydroxide solution to adjust the pH of the system to 8.2-9, keep it warm for 18 hours, drop to room temperature, use hydrochloric acid to adjust the pH of the system to neutral, filter, wash, and dry to obtain pretreated expanded perlite.

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Abstract

The invention discloses a lightweight expanded perlite external wall heat insulation plate. The lightweight expanded perlite external wall heat insulation plate is prepared from, by weight, 100-120 parts of pretreated expanded perlite, 20-30 parts of flax fibers, 20-40 parts of aluminum oxide fibers, 10-20 parts of carbon nanotubes, 10-20 parts of gypsum powder, 8-16 parts of expanded vermiculitepowder, 8-16 parts of barite sand, 8-16 parts of coal ash, 7-10 parts of waste brick powder, 6-14 parts of calcium carbonate and 15-25 parts of basalt fibers. The pretreated expanded perlite is prepared by steps: mixing expanded perlite, xanthan gum and absolute ethyl alcohol, heating, stirring, adding hydrogen peroxide solution, stirring, adjusting a system pH value to 8.2-9, keeping the temperature, cooling, adjusting system pH to neutral, filtering, washing and drying to obtain the pretreated expanded perlite. The lightweight expanded perlite external wall heat insulation plate is low in density, effective in heat insulation and excellent in pressure resistance, and thickness is effectively reduced on the basis that strength is guaranteed.

Description

technical field [0001] The invention relates to the technical field of thermal insulation panels for external walls, in particular to a lightweight expanded perlite thermal insulation panel for external walls. Background technique [0002] In my country's building thermal insulation projects, under the premise of ensuring a certain thickness of thermal insulation materials, it is necessary to ensure both the thermal insulation effect and the compressive strength, which has always been a major problem that plagues building energy conservation and building fire safety. [0003] In the structure without the external wall, due to the need for thermal insulation and compression resistance, the wall needs to be thickened to meet the functional requirements, which is not only heavy, but also cumbersome in construction and high in cost, which needs to be solved urgently. Contents of the invention [0004] Based on the technical problems existing in the background technology, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/28
CPCC04B26/285C04B2201/20C04B2201/32C04B2201/50C04B14/185C04B18/248C04B14/4625C04B14/026C04B22/143C04B14/204C04B14/368C04B18/08C04B18/16C04B14/28C04B14/46
Inventor 张绪恕
Owner 安徽臻烁新材料技术有限公司
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