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Biomass curing-acceleration phenolic resin and phenolic resin preparation method

A phenolic resin, biomass technology, applied in the directions of adhesive additives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve problems such as no public reports, achieve low price, simple preparation process, Simple to use effects

Active Publication Date: 2017-05-31
SOUTHWEST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Through literature search, there is no public report identical with the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add 146 parts of 37wt% formaldehyde aqueous solution and 98 parts of phenol to the reactor, adjust the pH to 8.5~9.0 with 30% NaOH alkali solution, and heat to about 90°C;

[0032] (2) After 15 minutes, adjust the pH to 8.5~9.0 with 30% NaOH alkali solution;

[0033] (3) After another 15 minutes, adjust the pH to 8.5~9.0 with 30% KOH alkali solution;

[0034] (4) React to about 200% of water miscibility, cool to 40°C, adjust the pH to 8.5-9.0 with 30% NaOH alkali solution, cool and discharge to obtain phenolic resin.

[0035] (5) Before using the phenolic resin, add 4.6 parts of a biomass curing accelerator.

[0036] The test indicators for the curing temperature and curing time of the phenolic resin before (PF1) and after (PF2) curing accelerator are as follows by means of a differential scanning calorimetry analyzer DSC (heating rate 10K / min):

[0037] Phenolic Resin Curing time / min Curing start temperature / ℃ Curing peak temperature / ℃ PF114.1153.3161.0 PF2 12.7143.0156...

Embodiment 2

[0039] (6) Add 162 parts of 37wt% formaldehyde aqueous solution and 98 parts of phenol to the reaction kettle, adjust the pH to 8.5-9.0 with 30% KOH alkaline solution, and heat to about 90°C;

[0040] (7) After 15 minutes, adjust the pH value to 8.5~9.0 with 30% KOH alkali solution;

[0041] (8) After another 15 minutes, adjust the pH to 8.5~9.0 with 30% NaOH alkali solution;

[0042] (9) React until the water miscibility is about 200%, cool to 40°C, adjust the pH to 8.5-9.0 with 30% KOH alkali solution, cool and discharge to obtain phenolic resin.

[0043] (10) Before using the phenolic resin, add 5.8 parts of a biomass curing accelerator.

[0044] The test indicators of the curing temperature and curing time of the phenolic resin before (PF1) and after (PF2) curing accelerator are as follows by means of a differential scanning calorimeter DSC (heating rate 10K / min):

[0045] Phenolic Resin Curing time / min Curing start temperature / ℃ Curing peak temperature / ℃ PF113.2149.1155.6 PF2 ...

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PUM

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Abstract

The invention discloses biomass curing-acceleration phenolic resin and a phenolic resin preparation method. Compared with the prior art, the curing-acceleration reagent adopted in the invention is a biomass material with low price; and since a degradable biomass material is introduced into the phenolic resin, the degradation effect of the waste material embedded into soil can be enhanced due to the microbial action; the preparation technology of the phenolic resin is relatively simple, and the adopted curing acceleration reagent is simply added before the use of the phenolic resin, so that the operation is simpler; and the prepared phenolic resin has relatively low curing temperature and relatively short curing time and is suitable for artificial board production and furniture making.

Description

Technical field [0001] The invention relates to the technical field of wood adhesive preparation, in particular to a biomass accelerated phenolic resin curing and a phenolic resin preparation method. Background technique [0002] Phenolic resin (PF) is the earliest industrialized synthetic polymer material with a history of more than 100 years. In the wood industry, PF is the most important outdoor-grade wood-based panel adhesive. Its consumption is second only to urea-formaldehyde resin. It is the second largest type of synthetic resin adhesive in the wood industry. It has more excellent stability, water resistance and weather resistance. [Huang Farong, Jiao Yangsheng. Phenolic resin and its application [M]. Beijing: Chemical Industry Press, 2003]. Although PF has the incomparable excellent performance of ordinary urea-formaldehyde resin, it also has some inherent defects, such as deep color of the adhesive layer, easy cracking of the adhesive layer, etc., especially the high c...

Claims

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Application Information

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IPC IPC(8): C08G8/10C09J161/10C09J11/06C09J11/08
CPCC08G8/10C08L2205/035C09J11/06C09J11/08C09J161/06C08L3/04C08L97/02C08L89/00C08K5/1545
Inventor 曹明吴志刚雷洪王璇张本刚蕫霁莹杜官本
Owner SOUTHWEST FORESTRY UNIVERSITY
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