Preparation method of porous composite pearlstone heat preservation material

A technology of thermal insulation material and perlite, applied in thermal insulation, ceramic products, building components, etc., can solve problems such as increasing product limitations, reducing production efficiency, and easily damaged materials, saving raw material consumption, improving production efficiency, scientifically sound effect

Inactive Publication Date: 2013-05-01
张峥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the prior art is that firstly wet compression molding is required, which requires more production equipment and more investment; the wet compression molding process leads to a compact structure of the finished product, although The density is high, and the strength of the finished product is high, but the more important thermal insulation performance of the thermal insulation material is undoubtedly reduced compared with the porous structure; the perlite thermal insulation profiles produced by the prior art mainly rely on the microporous structure of the perlite itself to generate thermal insulation effect
In this way, to achieve the same thermal insulation effect, thicker size, dense structure and thicker size requirements are required, which undoubtedly requires more raw materials, plus more investment in production equipment, and the cost increases; and this technology is also affected by the shape of the mold. Due to the limitations of molding equipment and compression molding equipment, it can only produce products with simple shapes such as flat plates or blocks, and there is a problem that products with complex shapes cannot be directly reached; and the materials after demoulding in a wet state are easily damaged, which reduces the production efficiency, and increased product limitations
In addition, the relatively high density and poor thermal insulation effect of the existing technology bring many shortcomings in the building design, such as shared area, building load, and construction convenience and safety; The method of directly plastering the wall is easily affected by weather factors such as temperature and rainfall before drying, and the construction period and quality after completion; because the slurry carries a lot of water, there are problems such as inconvenient transportation, high cost, and easy freezing in winter, while viscous slurry Insulation profiles coated with other materials either have lower insulation effect under the same thickness, or the cost is too high, which lacks competitiveness, which is purely superfluous

Method used

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  • Preparation method of porous composite pearlstone heat preservation material
  • Preparation method of porous composite pearlstone heat preservation material
  • Preparation method of porous composite pearlstone heat preservation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: use density is 60kg / m 3 Perlite particles are used as raw materials to prepare insulation materials.

[0022] (1), adding 9% TDI by weight to an appropriate amount of water to form a mixed solution, putting 3.6% polycrystalline alumina fibers into the mixed solution of TDI and water, stirring and beating until the polycrystalline alumina fibers are completely dispersed;

[0023] (2) Add 45.6% bentonite and 0.5% anti-crack fiber to the mixed liquid prepared in step (1), and add an appropriate amount of water to continue stirring until the bentonite is fully mixed with the liquid to form a viscous slurry;

[0024] (3) Add an appropriate amount of water to polyacrylamide with a weight ratio of 2.3% to make it liquid, add it to the viscous slurry prepared in step (2), add 9% water repellent, and stir evenly to make a colloidal mother liquor ;

[0025] (4), the perlite particle that is 30% by weight is mixed into colloidal mother liquor, adds water and adjus...

Embodiment 2

[0028] Embodiment 2: use density is 60kg / m 3 Perlite particles are used as raw materials to prepare insulation materials.

[0029] (1), adding 9% TDI by weight into an appropriate amount of water, putting 3.6% polycrystalline alumina fibers into the mixture of TDI and water, stirring and beating until the polycrystalline alumina fibers are completely dispersed;

[0030] (2) Add 45.6% bentonite and 0.5% anti-crack fiber to the mixed liquid prepared in step (1), and add an appropriate amount of water to continue stirring until the bentonite is fully mixed with the liquid to form a viscous slurry;

[0031] (3), the polyacrylamide with a weight ratio of 2.3% is adjusted to a liquid state by adding an appropriate amount of water, and then added to the slurry in step (2), and then added with 9% water-repellent agent, stirred evenly, and made into a colloidal mother liquor;

[0032] (4), mixing the perlite particles with a weight ratio of 30% into the colloidal mother liquor, addin...

Embodiment 3

[0035] Embodiment 3: use density is 125kg / m 3 Preparation of insulation materials from perlite particles

[0036] (1), adding 7% TDI into an appropriate amount of water by weight, putting 2.9% polycrystalline alumina fibers into the mixture of TDI and water, stirring and beating until the polycrystalline alumina fibers are completely dispersed;

[0037] (2) Add 35.9% bentonite and 0.4% anti-crack fiber to the mixed liquid prepared in step (1), and add an appropriate amount of water to continue stirring until the bentonite is fully mixed with the liquid to form a viscosity slurry;

[0038] (3) Add an appropriate amount of water to polyacrylamide with a weight ratio of 1.8% to make it liquid, add it to the slurry in step (2), add 7% water repellent, and stir evenly to make a colloidal mother liquor;

[0039] (4), mixing the perlite particles with a weight ratio of 45% into the colloidal mother liquor, adding an appropriate amount of water to a suitable viscosity, stirring even...

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Abstract

The invention belongs to the technical field of heat preservation material preparation and in particular relates to a preparation method of a porous composite pearlstone heat preservation material. Polycrystal alumina fiber is dispersed by using a mixed solution of tolylene diisocyanate (TDI) and water, and bentonite, anti-cracking fiber, polyacrylamide and a hydrophobic agent are added sequentially to prepare a colloid mother solution. Peralstone particles are mixed into the colloid mother solution and stirred evenly, and sticky composite pearlstone slurry is formed. The composite pearlstoneslurry is loaded into a special mold and accounts from 65-100% of space volume. The mold with the slurry is placed in a microwave heating device and heated, sticky slurry state materials in the mold generate gas along with a heated reaction and are expanded to fill an inner cavity of the mold, and liquid substances are gasified and escaped from a gas outlet hole of the mold or turned into solid substances and dried at last to form a composite peralstone heat preservation material section of a porous structure. The preparation method is easy in process, good in scientificalness, low in production cost, easy in obtaining of raw materials, good in product heat preservation performance, light in weight and convenient for popularization and application.

Description

Technical field: [0001] The invention belongs to the technical field of thermal insulation material preparation, and relates to a novel composite structure thermal insulation plate material used in construction occasions, in particular to a preparation method of a porous composite perlite thermal insulation material. Background technique: [0002] Since the promulgation and implementation of Document No. 65 of the Ministry of Public Security in 2011, Class A fireproof exterior wall insulation has been included in the mandatory standards for exterior wall insulation of civil buildings. Due to the withdrawal of Class B fireproof materials, the market has become more interested in exterior wall insulation materials with Class A fireproof standards. There is a great demand; expanded perlite particles are a common non-combustible thermal insulation material. The thermal insulation material based on it has the characteristics of low price, light weight, long-term use without deform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/76C04B38/02C04B26/04C04B16/06C04B14/38C04B14/18C04B24/26C04B14/10
Inventor 张峥张耀方
Owner 张峥
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