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Method for synthesizing biomass phenolic adhesive

A phenolic adhesive and biomass technology, applied in the direction of aldehyde/ketone condensation polymer adhesives, adhesives, adhesive types, etc., can solve the problems of phenolic resin adhesives that have not yet been seen, and achieve stability assurance and product quality Guarantee, the effect of fast feeding and discharging speed

Pending Publication Date: 2022-02-25
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, there has been no report on the synthesis of phenolic resin adhesives in a continuous manner in a microchannel reactor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Divide the raw materials into 3 parts for pre-use: ① 90 parts of phenol, 100 parts of formaldehyde and 48 parts of 32% sodium carbonate solution; ② 100 parts of formaldehyde and 72 parts of catalyst; ③ 120 parts of pulping waste liquid and 10 parts of deionized water.

[0025] 2) Set the reactor to a residence time of materials in the reactor of 2 minutes and a reaction temperature of 80° C., mix the raw materials in ① evenly and put them into the reactor to obtain a reaction solution 1.

[0026] 3) Reset the residence time of the materials in the reactor to 1 min and the reaction temperature to 90° C., put the reaction solution 1 and the mixed ② raw materials into the reactor to obtain the reaction solution 2.

[0027] 4) Reset the residence time of the material in the reactor to 1 min and the reaction temperature to 80° C., put the reaction solution 2 and the mixed raw material ③ into the reactor to obtain the product.

[0028] The application index detection is su...

Embodiment 2

[0030] 1) Divide the raw materials into 3 parts for pre-use: ① 90 parts of phenol, 120 parts of formaldehyde and 72 parts of 32% potassium hydroxide solution; ② 80 parts of formaldehyde and 48 parts of catalyst; ③ 120 parts of paper pulp and 10 parts of deionized water.

[0031] 2) Set the reactor to a residence time of 3 minutes and a reaction temperature of 85° C., mix the raw materials in ① evenly, and pour them into the reactor to obtain a reaction solution 1.

[0032] 3) Reset the residence time of the materials in the reactor to 2 minutes and the reaction temperature to 100° C., put the reaction solution 1 and the mixed raw materials of ② into the reactor to obtain the reaction solution 2.

[0033] 4) Reset the residence time of the material in the reactor to 1.5 min and the reaction temperature to 90° C., put the reaction solution 2 and the mixed raw material ③ into the reactor to obtain the product.

[0034] The application index detection is summarized in the table be...

Embodiment 3

[0036] 1) Divide the raw materials into 3 parts for pre-use: ① 90 parts of phenol, 160 parts of formaldehyde and 84 parts of 32% potassium hydroxide; ② 40 parts of formaldehyde and 36 parts of catalyst; ③ 120 parts of white mud and 10 parts of deionized water.

[0037] 2) Set the reactor to have a residence time of materials in the reactor of 4 minutes and a reaction temperature of 90° C., mix the raw materials of ① evenly and put them into the reactor to obtain a reaction solution 1.

[0038] 3) Reset the residence time of the materials in the reactor to 3 minutes and the reaction temperature to 120° C., put the reaction solution 1 and the mixed ② raw materials into the reactor to obtain the reaction solution 2.

[0039] 4) Reset the residence time of the material in the reactor to 2 minutes and the reaction temperature to 100° C., put the reaction solution 2 and the mixed raw material ③ into the reactor to obtain the product.

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PUM

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Abstract

The invention discloses a method for synthesizing a biomass phenolic adhesive, and relates to the field of phenolic resin adhesive synthesis, raw materials are divided into three parts for preparation and use: (1) phenol, part of formaldehyde and part of a catalyst; (2) residual formaldehyde and the catalyst; and (3) papermaking waste and deionized water; the method comprises the following steps: setting reactor material retention time and temperature of the reactor, and pumping the raw materials (1) into the reactor to obtain a reaction liquid I; resetting the retention time and temperature of the materials in the reactor, and pumping the reaction liquid I and the raw material II into the reactor to obtain a reaction liquid II; and resetting the material retention time and temperature of the reactor, and pumping the reaction liquid 2 and the raw material 3 into the reactor to obtain the product. According to the invention, the material contact probability can be greatly increased in a reaction environment, the material reaction can be completed in a short time, the reaction efficiency is greatly improved, the application performance of the product is better, the formaldehyde emission is reduced, and the safety and stability are good.

Description

technical field [0001] The invention relates to the field of synthesis of phenolic resin adhesives, in particular to a method for synthesizing biomass phenolic adhesives. Background technique [0002] At present, the production capacity, technological level and product quality of phenolic resin adhesives in my country have made great progress. At present, the annual output of phenolic resin in my country reaches 1.119 million tons, accounting for more than 20% of the global phenolic resin output. In 2018, among the main application fields of phenolic resin products in my country, the three major application fields of phenolic molding compound, wood processing and laminates, grinding and friction materials accounted for 22.50%, 20.50% and 20.00% of the total consumption respectively. Among them, phenolic resin has the advantages of high bonding strength, good water resistance and good weather resistance due to its unique network crosslinked molecular structure. In woodworki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/14C08G8/28
CPCC09J161/14C08G8/28
Inventor 施晓旦孙海强金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD