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
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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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