Lignin modified phenolic resin and preparing method thereof

A technology of phenolic resin and lignin, applied in the direction of lignin derivatives, chemical instruments and methods, organic chemistry, etc., can solve the problems of high curing temperature and raw material cost, affect the ecosystem, long hot pressing time, etc., and achieve production cost Low, strong anti-pollution, long storage effect

Inactive Publication Date: 2017-03-08
ANHUI GEYI CYCLIC ECONOMY IND PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phenolic resin adhesives have high bonding strength, excellent water resistance and weather resistance, and are suitable for the production of outdoor wood-based panels. However, there are also problems such as long hot pressing time, high curing temperature and raw material costs, and release of harmful substances.
The production and use of phenolic resin will also consume a large amount of petrochemical products, and bring a certain degree of pollution to the environment, affecting the entire ecosystem

Method used

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  • Lignin modified phenolic resin and preparing method thereof
  • Lignin modified phenolic resin and preparing method thereof
  • Lignin modified phenolic resin and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Lignin modified phenolic resin is made from the following raw materials in parts by weight:

[0042]

[0043] in:

[0044] Described phytate phosphorus resin is made from the raw material of following parts by weight:

[0045]

[0046] The preparation method of phytate phosphorus resin is as follows: add phytate phosphorus into the reactor, add deionized water to it to adjust the pH value to 10-13, then add diethylaminopropylamine to adjust the pH value to 8-13, and heat up to At 70°C, add sodium carbonate to react for 12 hours, and control the pH value from 1 to 6, add ammonium polyvanadate to react at 100°C for 2 hours, and obtain phytic acid phosphorus resin after centrifugal filtration.

[0047] The preparation method of lignin modified phenolic resin comprises the following steps:

[0048](1) Add lignin, phenol, hemicellulose liquid, demineralized water, phytate phosphorus resin and zeolite solid acid into the reaction kettle, react at a constant temperatur...

Embodiment 2

[0052] Lignin modified phenolic resin is made from the following raw materials in parts by weight:

[0053]

[0054] in:

[0055] The preparation method of described high activity biomass lignin is as follows:

[0056] (1) Using wheat straw as the raw material, first cut and remove dust by means of a pulverizer, and then steam-explode at 2.0-5.0 MPa for 2-6 minutes, add lye to the obtained solid after solid-liquid separation, and heat at 78-135°C Bottom cooking and separation for 0.5-2 hours to obtain high-activity biomass lignin black liquor;

[0057] (2) Add 15-90ppm of Ca(OH) to the high activity biomass lignin black liquor 2 Carry out flocculation and sedimentation, and filter through a filter with a filtration accuracy of 20 μm to obtain a high-activity biomass lignin serum;

[0058] (3) Send the high-activity biomass lignin liquid into the tubular ultrafiltration membrane, control the pressure of the ultrafiltration membrane stack to 5.0-8.0MPa, the temperature to ...

Embodiment 3

[0068] Lignin modified phenolic resin is made from the following raw materials in parts by weight:

[0069]

[0070]

[0071] in:

[0072] Described phytate phosphorus resin is made from the raw material of following parts by weight:

[0073]

[0074] The preparation method of phytate phosphorus resin is as follows: add phytate phosphorus into the reactor, add deionized water to it to adjust the pH value to 10-13, then add diethylaminopropylamine to adjust the pH value to 8-13, and heat up to At 95°C, add sodium carbonate to react for 20 hours, and control the pH value from 1 to 6, add ammonium polyvanadate at 100°C to react for 2 hours, and obtain phytic acid phosphorus resin after centrifugal filtration.

[0075] The preparation method of lignin modified phenolic resin comprises the following steps:

[0076] (1) Add lignin, phenol, hemicellulose liquid, demineralized water, phytate phosphorus resin and zeolite solid acid into the reaction kettle, react at a consta...

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Abstract

The invention relates to a lignin modified phenolic resin and a preparing method thereof, and belongs to the technical field of phenolic resin. The lignin modified phenolic resin is prepared from, by weight, 50-70 parts of lignin, 100-150 parts of phenol, 2-25 parts of an acidic hemicellulose liquid, 50-100 parts of alkaline hemicellulose liquid, 10-50 parts of soft water, 50-70 parts of phytate phosphorus resin, 1-15 parts of zeolite solid acid, 40-190 parts of formaldehyde, 2-20 parts of gel-type ion exchange resin and 1-15 parts of a nanometer composite catalyst. The preparing method includes the steps that the lignin, the phenol, the hemicellulose liquid, the soft water, the phytate phosphorus resin and the zeolite solid acid are added into a reaction kettle and reacted, then the formaldehyde and the nanometer composite catalyst are added, the mixture is washed, dried and smashed, then the gel-type ion exchange resin is added, and the lignin modified phenolic resin is obtained. The lignin modified phenolic resin is good in stability and low in production cost, and has the excellent size stability, forming processing performance and fire resistance.

Description

technical field [0001] The invention relates to a lignin-modified phenolic resin and a preparation method thereof, belonging to the technical field of phenolic resins. Background technique [0002] With the rapid development of my country's wood-based panel industry, the output of using phenolic resin to manufacture wood-based panels is also rising. Phenolic resin adhesives have high bonding strength, excellent water resistance and weather resistance, and are suitable for the production of outdoor wood-based panels. However, they also have problems such as long hot pressing time, high curing temperature and raw material costs, and the release of harmful substances. The production and use of phenolic resin will also consume a large amount of petrochemical products, and bring a certain degree of pollution to the environment, affecting the entire ecosystem. Nowadays, the prices of phenol and formaldehyde, the raw materials used to produce phenolic resin, are also rising, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28C08H7/00C08G79/04
CPCC08G8/28C07G1/00C08G79/04
Inventor 邹海平周婉莹黄裔佘胜胜周磊
Owner ANHUI GEYI CYCLIC ECONOMY IND PARK
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