Composite material prepared from cork oak bark softwood and aluminum oxide and preparation method

A technology of porous composite material and alumina is applied in the field of composite material and preparation made of cork oak bark cork and alumina, which can solve the problems of insufficient industrial competitiveness, low added value of products, backward cork industry, etc. Thermal insulation properties, low density, high porosity effect

Pending Publication Date: 2021-09-07
山东省栓皮栎产业技术研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the research and application of cork materials in my country is still in its infancy, and the cork industry is relatively backward. The products are mainly primary products such as cork bricks and cork paper, with low added value and insufficient industrial competitiveness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A cork-alumina porous composite material, comprising the following components in parts by weight: 90 parts of alumina, 9 parts of cork, and 1 part of binder;

[0032] The alumina is high-temperature alumina with a purity >99% and a particle size of 10-20 μm.

[0033] The cork is granular, with a particle size of 0.1-1mm.

[0034] The binder is one or more of phenolic resin, urea-formaldehyde resin glue, epoxy resin or polyurethane.

[0035] A method for preparing a cork alumina porous composite material, comprising the steps of:

[0036] (a) drying, pulverizing, grinding, and sieving common natural cork to obtain cork particles with a particle size of 0.1 to 1 mm;

[0037] (b) According to the proportion by weight, the composition is: 90 parts of alumina, 9 parts of cork, and 1 part of binder. Weigh the raw materials, mix alumina powder, cork particles and binder, and obtain the cork / alumina composite Powder;

[0038] (c) The composite powder is cold-pressed under t...

Embodiment 2

[0045] A cork alumina porous composite material, comprising the following components in parts by weight: 70 parts of alumina, 25 parts of cork, and 5 parts of binder;

[0046] The alumina is high-temperature alumina with a purity >99% and a particle size of 10-20 μm.

[0047] The cork is granular, with a particle size of 0.1-1 mm.

[0048] The binder is one or more of phenolic resin, urea-formaldehyde resin glue, epoxy resin or polyurethane.

[0049] A method for preparing a cork alumina porous composite material, comprising the steps of:

[0050] (a) drying, pulverizing, grinding, and sieving common natural cork to obtain cork particles with a particle size of 0.1 to 1 mm;

[0051] (b) according to the ratio of parts by weight, the composition is: alumina 70, cork 25, binder 5. Weigh raw materials, mix alumina powder, cork particles and binder to obtain cork / alumina composite powder;

[0052] (c) The composite powder is cold-pressed under the condition of a molding pressur...

Embodiment 3

[0058] A cork alumina porous composite material, comprising the following components in parts by weight: 70 parts of alumina, 25 parts of cork, and 5 parts of binder;

[0059] The alumina is high-temperature alumina with a purity >99% and a particle size of 10-20 μm.

[0060] The cork is granular, with a particle size of 0.1-1mm.

[0061] The binder is one or more of phenolic resin, urea-formaldehyde resin glue, epoxy resin or polyurethane.

[0062] A method for preparing a cork alumina porous composite material, comprising the steps of:

[0063] (a) drying, pulverizing, grinding and sieving the reclaimed red wine cork to obtain cork particles with a particle size of 0.1 to 1 mm;

[0064] (b) according to the ratio of parts by weight, the composition is: alumina 70, cork 25, binder 5. Weigh raw materials, mix alumina powder, cork particles and binder to obtain cork / alumina composite powder;

[0065] (c) The composite powder is cold-pressed under the condition of a molding p...

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Abstract

The invention relates to the technical field of heat insulation and heat preservation materials, in particular to a cork aluminum oxide porous composite material prepared by utilizing the natural cell structure and flame retardant property of cork, and particularly relates to a composite material prepared from cork oak bark cork and aluminum oxide and a preparation method. The material contains the following components in parts by weight: 70-98 parts of aluminum oxide, 1-25 parts of softwood and 1-5 parts of binder, the softwood is used as a pore-forming agent, the softwood/aluminum oxide porous composite material is prepared by using the natural cellular structure and flame-retardant characteristic of the softwood, and the pore size distribution and porosity are adjustable; the cork/alumina porous composite material prepared by the invention has the advantages of high porosity, small density, high compression strength, low thermal conductivity and favorable heat insulation property, can be used as a furnace lining material of a high-temperature kiln, effectively solves the problem of shortage of high-temperature furnace lining materials in China, and has important significance for realizing energy conservation and emission reduction and improving the additional value of cork products; the material can be widely applied to the heat insulation fields of high-temperature furnaces, buildings, transportation, aerospace and the like.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a cork-alumina porous composite material prepared by utilizing the natural cell structure and flame-retardant properties of cork, especially a composite material made of cork oak bark and alumina and Preparation. Background technique [0002] High-temperature kilns are the core equipment of high-temperature process industries such as metallurgy, electric power, building materials, and petrochemicals. Their energy consumption accounts for about 60% of my country's total industrial energy consumption, and their thermal efficiency is less than 30% on average (international ≥ 50%). The large-scale and high-efficiency of modern industrial furnaces and the development of new technology put forward higher requirements on the function and life of furnace lining materials. [0003] Alumina porous ceramics are materials with high porosity, high strength, air erosion r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B35/10
CPCC04B38/08C04B35/10C04B2235/77C04B2235/96C04B2235/9607C04B2235/6567C04B38/0067
Inventor 卢志华郭文霞李迎超陈幸良刘宝宣周晶易现峰李大全张荣保
Owner 山东省栓皮栎产业技术研究院有限公司
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