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Method of preparing low aldehyde water-resistant copolycondensation resin adhesive by using fiber alcoholic fermentation residue

A technology of copolycondensation resin and fermentation residue, applied in the direction of aldehyde/ketone condensation polymer adhesives, adhesives, adhesive types, etc. Dependence, broaden the source of raw materials, and reduce costs

Active Publication Date: 2019-01-11
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In recent years, with the intensification of the oil resource crisis, the price of petrochemical resources has continued to rise, which has brought a huge impact on the phenolic resin adhesive industry that relies on petrochemical resources. The rising price of raw materials has caused its finished products to remain high, seriously Limiting the sustainable development of the industry

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  • Method of preparing low aldehyde water-resistant copolycondensation resin adhesive by using fiber alcoholic fermentation residue

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Embodiment 1

[0067] One embodiment of the present invention proposes a method for preparing a low-aldehyde water-resistant co-condensation resin adhesive from fiber ethanol fermentation residue, which includes:

[0068] Mix 36g of cellulosic ethanol fermentation residue with 50g of 5wt% NaOH solution, and stir at 90°C for 1 hour to obtain the first activated product;

[0069] Add 23g of phenol to the first activated product and fully react at 95°C for 1 hour to obtain the second activated product;

[0070] Add 6.67g of 30wt% NaOH aqueous solution and 20.42g of 37wt% formaldehyde aqueous solution to the second activated product, and react at 80°C for 1 hour to obtain the first polycondensation product;

[0071] Add 5.33g of 30wt% NaOH aqueous solution and 13.68g of 37wt% formaldehyde aqueous solution to the first polycondensation product, and react at 80°C for 1 hour to obtain the second polycondensation product;

[0072] Add 5.33g of 30wt% NaOH aqueous solution and 9.68g of 37wt% formalde...

Embodiment 2

[0078] One embodiment of the present invention proposes a method for preparing a low-aldehyde water-resistant co-condensation resin adhesive from fiber ethanol fermentation residue, which includes:

[0079] Mix 36g of cellulosic ethanol fermentation residue with 50g of 10wt% NaOH solution, and stir at 90°C for 0.5h to obtain the first activated product;

[0080] Add 23g of phenol to the first activated product and fully react at 95°C for 1 hour to obtain the second activated product;

[0081] Add 6.67g of 30wt% NaOH aqueous solution and 20.42g of 37wt% formaldehyde aqueous solution to the second activated product, and react at 90°C for 1 hour to obtain the first polycondensation product;

[0082] Add 5.33g of 30wt% NaOH aqueous solution and 13.68g of 37wt% formaldehyde aqueous solution to the first polycondensation product, and react at 90°C for 0.8h to obtain the second polycondensation product;

[0083] Add 5.33g of 30wt% NaOH aqueous solution and 9.68g of 37wt% formaldehyd...

Embodiment 3

[0089] One embodiment of the present invention proposes a method for preparing a low-aldehyde water-resistant co-condensation resin adhesive from fiber ethanol fermentation residue, which includes:

[0090] Mix 36g of cellulosic ethanol fermentation residue with 36g of 5wt% NaOH solution and stir at 90°C for 1 hour to obtain the first activated product;

[0091] Add 23g of phenol to the first activated product and fully react at 95°C for 1 hour to obtain the second activated product;

[0092] Add 6.67g of 30wt% NaOH aqueous solution and 20.42g of 37wt% formaldehyde aqueous solution to the second activated product, and react at 85°C for 0.8h to obtain the first polycondensation product;

[0093] Add 5.33g of 30wt% NaOH aqueous solution and 13.68g of 37wt% formaldehyde aqueous solution to the first polycondensation product, and react at 85°C for 0.8h to obtain the second polycondensation product;

[0094] Add 5.33g of 30wt% NaOH aqueous solution and 9.68g of 37wt% formaldehyde ...

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Abstract

The invention relates to a method of preparing a low aldehyde water-resistant copolycondensation resin adhesive by using fiber alcoholic fermentation residue. The method comprises the following stepsof: mixing the fiber alcoholic fermentation residue with a first alkali solution, and activating to obtain a first activation product; carrying out first reaction on the first activation product and phenol to obtain a second activation product; and carrying out section reaction on the second activation product, a second alkali solution and a first formaldehyde solution to obtain a first polycondensation product; carrying out third reaction on the first polycondensation product, a third alkali solution and a second formaldehyde solution to obtain a second polycondensation product; carrying outfourth reaction on the second polycondensation product, a fourth alkali solution and a third formaldehyde solution to obtain a third polycondensation product; and carrying out fifth reaction on the third polycondensation product, a fifth alkali solution and urea, and cooling to obtain the low aldehyde water-resistant copolycondensation resin adhesive. The fiber alcoholic fermentation residue is asa raw material of the adhesive, so that the dependence on petrochemical resources is reduced, and the overall economic benefit of the wood-based panel industry is improved.

Description

technical field [0001] The invention relates to the field of wood adhesive preparation, in particular to a method for preparing a low-aldehyde water-resistant co-condensation resin adhesive from fiber ethanol fermentation residue. Background technique [0002] Cellulose ethanol refers to the conversion of various biomass into fuel alcohol through the fermentation of microorganisms. It can be used alone or mixed with gasoline to make ethanol gasoline as a vehicle fuel. Most of the current industrialized production of fuel ethanol is based on food crops, which is limited in scale and unsustainable in the long run. The second-generation biofuel ethanol based on lignocellulose is the key to determining the large-scale replacement of petroleum in the future. With the aggravation of energy problems and the prominence of food problems, countries are vigorously developing cellulosic ethanol technology using lignocellulose as raw material. Although this technology requires a large ...

Claims

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Application Information

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IPC IPC(8): C08G14/08C09J161/34
CPCC08G14/08C09J161/34
Inventor 袁同琦孙润仓杨昇庞博
Owner BEIJING FORESTRY UNIVERSITY
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