A kind of expanded perlite insulation board and preparation method thereof

A technology of expanded perlite and thermal insulation board, applied in the field of building materials, can solve the problems of unsatisfactory product dry density and thermal conductivity, long demoulding time, harsh maintenance conditions, etc., to improve the ability of antifreeze and heat protection, Low production cost, non-toxic and harmless materials

Active Publication Date: 2019-08-09
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides an expanded perlite insulation board and its preparation method to solve the problem of high cost, harsh maintenance conditions, and time required for demoulding due to high-temperature sintering required for the preparation of expanded perlite insulation boards in the prior art. Long and the problem of unsatisfactory dry density and thermal conductivity of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An expanded perlite insulation board, comprising the following components by weight: 80 parts of expanded perlite, 5 parts of cement, 2 parts of calcium chloride, 4 parts of sodium methyl siliconate, 2 parts of formaldehyde-free glue, and 10 parts of wood fiber , 0.3 parts of water. The production process of the expanded perlite insulation board includes the following steps: (1) Put cement, quick-setting agent calcium chloride and water-repellent sodium methyl siliconate into the mixer according to the ratio of 200r / min Stir at a high speed for 25 minutes, mix and stir evenly to obtain a powder mixture; (2) add formaldehyde-free glue to water, stir with a mixer at a speed of 150r / min for 25 minutes, mix with the powder mixture and then stir to obtain a slurry; (3) Add the expanded pearl Pour the rock and wood fiber into the stirred slurry, and the mixer continues to stir at a speed of 100r / min for 35 minutes to obtain the insulation board mixture; (4) Put the stirred in...

Embodiment 2

[0027] An expanded perlite insulation board, comprising the following components by weight: 85 parts of expanded perlite, 10 parts of cement, 3 parts of calcium chloride, 5 parts of water repellent, 3 parts of formaldehyde-free glue, 15 parts of wood fiber, 0.4 parts of water share. The production process of the expanded perlite insulation board includes the following steps: (1) Weigh 10 parts of cement, 3 parts of quick-setting agent calcium chloride, and 5 parts of water repellent according to the ratio, and put them into a mixer at 250r Stir for 20 minutes at a speed of 200r / min, mix and stir evenly to obtain a powdery mixture; (2) Add 3 parts of formaldehyde-free glue to 0.4 parts of water and add it to the mixer, and the mixer stirs at a speed of 200r / min for 20min, and mix it with the powdery mixture Stir to obtain slurry; (3) Pour 85 parts of expanded perlite and 15 parts of wood fiber into the stirred slurry, and continue to stir at a speed of 150r / min for 30 minutes t...

Embodiment 3

[0030] An expanded perlite insulation board, comprising the following components by weight: 90 parts of expanded perlite, 15 parts of cement, 4 parts of accelerator, 6 parts of water repellent, 4 parts of formaldehyde-free glue, 20 parts of wood fiber, 0.5 parts of water share. The production process of the expanded perlite insulation board includes the following steps: (1) Weigh 15 parts of cement, 4 parts of quick-setting agent, and 6 parts of water-repellent according to the ratio, and put them into a mixer at a rate of 300r / min. Stir for 15 minutes at a high speed, mix and stir evenly to obtain a powdery mixture; (2) Add 4 parts of formaldehyde-free glue to 0.5 parts of water and add it to the mixer, stir at a speed of 250r / min for 15 minutes, mix it with the powdery mixture and stir to obtain a slurry (3) Pour 90 parts of expanded perlite and 20 parts of wood fiber into the stirred slurry, and the mixer continues to stir at a speed of 200r / min for 25 minutes to obtain the...

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Abstract

The invention discloses an expanded perlite heat insulation board and a preparation method thereof. The preparation method is concretely characterized in that firstly, non-formaldehyde adhesive is added into water and is uniformly stirred; afterwards, cement, an accelerating agent and a moisture repellent are added and are uniformly stirred to obtain slurry; then, expanded perlite and xylem fiber are poured into the slurry; stirring is performed to obtain a heat insulation board mixed material; finally, the heat insulation board mixed material is charged into a mold; after press forming, fast demoulding is performed; blanks are cured for 6 to 10h under natural conditions. The preparation method has the advantages that high-temperature sintering is not needed; a production process is simple; fast demoulding can be realized; the curing conditions are simple; the production cost is economic and low; the performance of the heat insulation board is excellent; good commercial prospects are realized.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an expanded perlite insulation board and a preparation method thereof. Background technique [0002] Expanded perlite is an inorganic thermal insulation material obtained by roasting perlite at high temperature. Due to its excellent thermal insulation performance, it is widely used in thermal insulation panels. At present, the expanded perlite insulation boards on the market are mostly made of high-temperature sintering and curing processes, which generally have defects such as high thermal conductivity, high water absorption, and poor durability. Therefore, the modification research and development of expanded perlite insulation boards have great significance important practical significance. [0003] The invention patent with the Chinese patent application number 201310577279.5 discloses an expanded perlite external wall insulation board and its preparation method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B111/20
CPCC04B28/00C04B2111/20C04B2201/20C04B2201/32C04B2201/50C04B24/42C04B16/02C04B14/185C04B22/124C04B2103/0091
Inventor 朱绍峰李海斌
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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