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Inorganic fireproof heat insulating plate and preparation method thereof

A fireproof insulation board and inorganic technology, applied in the field of inorganic fireproof insulation board and its preparation, can solve the problems of slow condensation of inorganic cementitious materials, long production cycle of insulation products, unfavorable industrial production, etc., and achieve good insulation performance, manpower saving, Good adhesion effect

Inactive Publication Date: 2013-01-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are two main problems in domestic building insulation boards: 1. The slow setting of inorganic gelling materials leads to a long production cycle of insulation products, which is not conducive to industrial production
2. Existing insulation materials are not fire-resistant, and there are serious safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of the above-mentioned inorganic fireproof insulation board comprises the following steps:

[0030] The first step: select inorganic cementitious materials and light aggregates.

[0031] In this step, the inorganic cementitious material can be selected from magnesium inorganic cementitious material, calcium sulfate inorganic cementitious material or alkali-excited inorganic cementitious material. Lightweight aggregates can choose expanded perlite, or vitrified microbeads.

[0032] The second step: preparation of inorganic gelling slurry.

[0033] In this step, water is added to the inorganic cementitious material selected in the first step, and the mixture is uniformly stirred to prepare an inorganic cementitious slurry. The stirring time can be from 30 seconds to 45 seconds.

[0034] The third step: prepare inorganic fireproof insulation board.

[0035] In this step, light aggregates are added to the inorganic cementitious slurry prepared in ...

Embodiment 1

[0039] Example 1: Selected raw materials: light aggregate is expanded perlite, and inorganic cementitious material is magnesia inorganic cementitious material composed of magnesium oxide, phosphate, ash and borax. Among them, the molar ratio of magnesium oxide and phosphate is 6:1, the content of ash (fly ash) is 10%, that is, the mass ratio of ash and magnesium oxide is 1:10, and the content of borax is 5%, namely The mass ratio of borax and magnesium oxide is 1:20, the volume ratio of magnesia inorganic cementitious material to expanded perlite is 46:1000, and the volume ratio of water to expanded perlite is 150:1000.

[0040] According to the above ratio, the magnesium phosphate inorganic gelling slurry is prepared, and then the expanded perlite is added according to the above ratio, and the mixture is stirred evenly until the magnesium phosphate inorganic gelling slurry is uniformly dispersed on the surface of the expanded perlite, and then the mold is installed. After t...

Embodiment 2

[0041] Example 2: Selected raw materials: light aggregate is expanded perlite, inorganic cementitious material is hemihydrate gypsum, the volume ratio of hemihydrate gypsum to expanded perlite is 59:1000, and the volume ratio of water to expanded perlite is 175:1000. In the same manner as in Example 1, an inorganic fireproof thermal insulation board was produced according to the preparation method of the present invention.

[0042] After the mixture of hemihydrate gypsum and expanded perlite is installed, the hardening time is 5 minutes, and the mold is demolded after 20 minutes. When completely dry, brush the inorganic cementitious slurry on the surface of the insulation board. The result of the test is: the production cycle of the inorganic fireproof insulation board is 6 hours, and the bulk density is 280kg / m 3 , the thermal conductivity is 0.0616W / (m·K), and the fire resistance grade is A2.

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Abstract

The invention discloses an inorganic fireproof heat insulating plate, which consists of the following components by volume: 46 to 77 parts of inorganic gelatin material, 150 to 175 parts of water, and 1,000 parts of light aggregate. A method for preparing the inorganic fireproof heat insulating plate comprises the following steps of: 1, selecting the inorganic gelatin material and the light aggregate; 2, preparing inorganic gelatin paste, wherein water is added into the inorganic gelatin material selected in the step 1, and the mixture is uniformly stirred to prepare the inorganic gelatin paste; and 3, preparing the inorganic fireproof insulating plate, wherein the light aggregate is added into the inorganic gelatin paste prepared in the step 2 to obtain a mixture, the mixture is stirred until the inorganic gelatin paste is uniformly dispersed on the surface of the light aggregate, and the mixture is filled in a mould to prepare the inorganic fireproof insulating plate. The inorganic fireproof insulating plate prepared by adopting the preparation method has short production period, excellent heat insulating performance and high fireproof performance.

Description

technical field [0001] The invention belongs to the field of preparation of fireproof and thermal insulation materials used for building exterior walls, and in particular relates to an inorganic fireproof and thermal insulation board and a preparation method thereof. Background technique [0002] Entering the 21st century, under the environment of soaring oil prices and increasingly scarce energy sources, the importance of thermal insulation projects is becoming more and more prominent. Insulation engineering has the functions of saving energy, reducing energy consumption, reducing the emission of harmful substances, and improving people's living environment. It has gradually become the focus of government departments and scientific circles around the world. Therefore, in recent years in our country, building exterior wall insulation materials have developed very rapidly. However, due to the occurrence of many building insulation fire incidents in recent years, it has trigg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B28/30C04B28/14C04B28/10
Inventor 陈惠苏鲍步传刘琳孙伟
Owner SOUTHEAST UNIV
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