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Wood liquefied substance foamed material and preparation method thereof

A technology for foaming materials and wood materials, which is applied in the field of wood liquefied material foaming materials and its preparation, can solve problems such as pollution and difficulty in recycling, and achieve the effects of simple process, wide source of raw materials and reduced energy consumption.

Inactive Publication Date: 2015-04-15
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional foaming materials are mainly polyurethane foaming materials, almost all of which come from petrochemical and other organic chemical raw materials. At the same time, there are problems such as difficult recycling and large amount of pollution in the use of products.

Method used

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  • Wood liquefied substance foamed material and preparation method thereof
  • Wood liquefied substance foamed material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 Preparation of wood liquefied material foaming material

[0034] 1. Pulverize the woody material into a powder with a size of 40 meshes, add 3 times the weight of wood powder to the wood powder, add an acid catalyst at 3% of the weight of phenol, and start the agitator and condensing device under 98% sulfuric acid catalyzed conditions. Heating to 150°C in an oil bath, keeping the temperature for 1 hour to complete the liquefaction, and obtaining a black viscous wood liquefaction stock solution (see ZL 200710100365.1).

[0035] 2. Filtration of liquefied matter: the above stock solution was diluted by adding 40% 1,4-dioxane solution as a solvent according to the weight ratio, and then vacuum filtered with a G2 glass filter to obtain a filtrate. The filtrate was distilled at 50°C for 3 hours to remove the solvent 1,4-dioxane to obtain a woody liquefied product, which was placed in a three-necked flask.

[0036] 3. Synthesis of wood liquefaction resin: Add 40% s...

Embodiment 2

[0039] Example 2 Preparation of wood liquefied material foaming material

[0040] 1. Grind the woody material into powder with a size of 80 meshes, add phenol with 6 times the weight of wood powder to the wood powder, add acid catalyst according to 6% of the weight of phenol, and start the agitator and condensing device under the catalysis condition of 98% sulfuric acid, Heating to 180°C in an oil bath, keeping the temperature for 1.5 hours to complete the liquefaction, and obtaining a black viscous wood liquefaction stock solution (see ZL200710100365.1).

[0041] 2. Filtration of liquefied matter: the above stock solution was diluted by adding 40% dimethylformamide solution as a solvent according to the weight ratio, and then vacuum-filtered with a G2 glass filter to obtain a filtrate. The filtrate was distilled at 70°C for 3h, and the solvent dimethylformamide was removed to obtain a wood liquefaction, which was placed in a three-necked flask.

[0042] 3. Synthesis of wood li...

Embodiment 3

[0045] Example 3 Preparation of wood liquefied material foaming material

[0046] 1. Grinding the woody material into powder with a size of 50 meshes, adding 4 times the weight of wood powder to the wood powder, adding an acid catalyst at 4% of the weight of phenol, and starting the agitator and condensing device under 98% sulfuric acid catalysis conditions, Heating to 160°C in an oil bath, keeping the temperature for 1 hour to complete the liquefaction, and obtaining a black viscous wood liquefaction stock solution (see ZL 200710100365.1).

[0047] 2. Filtration of liquefied matter: the above stock solution was diluted by adding 40% dimethyl acetyl solution as a solvent according to the weight ratio, and then vacuum filtered with a G2 glass filter to obtain a filtrate. The filtrate was distilled at 60°C for 2 hours to remove the solvent dimethylacetyl to obtain a wood liquefaction, which was placed in a three-necked flask.

[0048] 3. Synthesis of wood liquefaction resin: Ad...

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Abstract

The invention provides a novel wood liquefied substance foamed material and a preparation method thereof. The preparation method comprises the following steps: putting wood meal in a liquefying plant, and adding a liquefier phenol and an acidic catalyst to prepare a wood liquefied substance; and carrying out resin synthesis on the liquefied substance to obtain a wood liquefied substance resin, adding certain amounts of curing agent, foaming agent, catalyst and surfactant, and foaming in a drying oven to obtain the wood liquefied substance foamed material, of which the apparent density is 0.11-0.28 g / cm<3> and the compression strength is 1.6-5.1 MPa. By using the wood biomass as the raw material, the invention fully utilizes recyclable resources, such as forestry processing wastes, agricultural wastes or any other biomass raw material, instead of petroleum resources to substitute oil with wood, thereby effectively solving the problem of shortage of energy in future, and providing a new way for developing novel chemical products from renewable recourses.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a wood liquefied material foaming material and a preparation method thereof. Background technique [0002] In the context of a low-carbon and energy-saving society, the application of energy-saving and thermal insulation materials has received increasing attention. The traditional foaming materials are mainly polyurethane foaming materials, whose raw materials are almost all derived from petrochemical and other organic chemical raw materials. At the same time, there are problems such as difficult recycling and large amount of pollution in the use of products. [0003] With the shortage of petrochemical resources, woody biomass resources have gradually become an important substitute. The sources of woody biomass resources are extensive and renewable, and the polymer materials prepared from its liquefaction are naturally biodegradable. The liquefaction technology of w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08L3/02C08J9/14C08G8/28C08G8/10
Inventor 张文博
Owner BEIJING FORESTRY UNIVERSITY
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