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Water-preserving materials and process for preparing same

A technology of thermal insulation and thermal insulation materials, applied in ceramic products, other household appliances, applications, etc., can solve problems such as low strength, large compression ratio, and fragile materials, and achieve sound insulation performance and excellent thermal insulation effects

Inactive Publication Date: 2006-12-20
无锡裕宸建筑节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Expanded perlite is a granular product with extremely irregular shape, many holes, gaps, unevenness and incoherent surface on the surface. This structural feature makes the material brittle, with high compression ratio and low strength. The efficiency can be as high as 500%, these shortcomings greatly reduce the thermal insulation performance and service life of expanded perlite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] [Example 1] Preparation of thermal insulation material of the present invention

[0026] Weigh each raw material according to the following weight (unit: kg): perlite 20, straw fiber 2 with a length less than 2 mm, magnesium oxide 15, magnesium sulfate 5, magnesium chloride 2, foaming agent (purchased from China Academy of Building Materials Science) 0.5, methyl cellulose 2, urea-formaldehyde resin 10. Wherein the preparation method of the rice straw fiber is as follows: the rice straw is pulverized into fibers with a length less than 2mm by a pulverizer. Mix the above raw materials together, add 1.5 times the weight of water, and stir at 300 rpm for 30 minutes to obtain the thermal insulation material of the present invention.

[0027] The thermal insulation material prepared in this example was tested by the National Building Materials Testing Center, and the test results are shown in Table 1.

[0028] Test items

Embodiment 2

[0029] [embodiment 2] preparation of thermal insulation material of the present invention

[0030] Weigh each raw material (unit: kg) according to the following weight: perlite 70, silicate fiber 15, magnesium oxide 68, magnesium sulfate 20, magnesium chloride 8, foaming agent (purchased from China Academy of Building Materials Science) 2, Binder (purchased from Beijing Zhongke Shengbaohe New Material Technology Co., Ltd., its trade name is "Shengbaohe" binder) 15, urea-formaldehyde resin 80. The above-mentioned raw materials are mixed together, water is added in a weight ratio of 1.5 times, and the heat preservation material of the present invention is obtained after stirring at 600 rpm for 30 minutes.

[0031] The thermal insulation material prepared in this example was tested by the National Building Materials Testing Center, and the test results are shown in Table 2.

[0032] Test items

Embodiment 3

[0033] [Example 3] Preparation of thermal insulation material of the present invention

[0034] Weigh each raw material according to the following weight (unit: kg): perlite 62, glass fiber 3, superfine building materials high-efficiency additive 8, magnesium oxide 20, magnesium sulfate 8, magnesium chloride 2, foaming agent (purchased from China Building Materials Science Institute) 0.5, urea-formaldehyde resin 20.

[0035] Among them, the perlite is composed of microporous perlite and expanded perlite with a weight ratio of 2:8.

[0036] Among them, the preparation method of the high-efficiency additive for ultra-fine building materials is as follows: it is prepared by referring to the method with the publication number CN 1616376A and making the following improvements: subtract 50% from the weight of the solid matter in the preparation process, and the others are the same as the publication number CN 1616376A the method described.

[0037]The above-mentioned raw materials...

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Abstract

The invention discloses a new thermal insulation material and its preparing method, that includes the materials in weight portion as follows: 20-70 portions of perlite, 2-15 portions of fiber, 15- 70 portions of magnesium oxide, 5-20 portions of magnesium sulfate, 2-8 portions of magnesium chloride, 0.5-2 portions of foaming agent, 2-15 portions of bonding agent, 10-80 portions of urea-formaldehyde resin. As confirmed by the experiment, the thermal insulation in the invention has the advantages of heat preservation, heat insulation, fireproof, moisture proof, sound insulation, non-dispersed in water, and can be used broad in the area of architecture, chemical engineering, storage, and high or low temperature tube.

Description

technical field [0001] The invention relates to a thermal insulation material, in particular to a thermal insulation building material mainly prepared from perlite, a preparation method and application thereof. Background technique [0002] At present, the common thermal insulation materials on the market mainly include the following types: expanded perlite materials, polystyrene particle composite silicate materials, fly ash ceramsite materials, etc. my country has produced expanded perlite insulation materials for 30 years, with an annual output of 6 million m 3 , but the variety is always a single porous structure product. Expanded perlite is a granular product with extremely irregular shape, many holes, gaps, unevenness and incoherent surface. This structural feature makes the material brittle, with high compression ratio and low strength. The rate can be as high as 500%, and these shortcomings greatly reduce the thermal insulation performance and service life of expan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/14C04B22/12C04B16/04C04B14/30C04B14/18C04B14/38C04B38/02
CPCC04B2111/28C04B26/127C04B38/08
Inventor 刘贵堂
Owner 无锡裕宸建筑节能科技有限公司
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