Furfuryl alcohol resin optimizing liquid for wood modification based on compound catalyst

A compound catalyst and wood modification technology, which is applied in the direction of impregnating wood, wood impregnation, wood processing equipment, etc., can solve the problems of poor dimensional stability and mechanical properties, and achieve superior performance, good environmental performance, and simple preparation process Effect

Inactive Publication Date: 2016-12-14
NANJING BOJUN NEW MATERIAL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the fast growth rate of plantation wood, the dimensional stability and mechanical properties of wood are usually worse than those of natural forest wood, which is difficult to meet the needs of the wood processing industry. Therefore, plantation wood needs to be modified and optimized with performance modifiers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The furfuryl alcohol resin optimization solution for wood modification based on compound catalysts includes the following raw material components in parts by weight: 70% furfuryl alcohol, 5% maleic anhydride, 1.15% citric acid, 0.6% oxalic acid, 4% sodium carbonate, and 1% methanol , ethanol 2.5% and distilled water 22%.

[0018] The preparation method is:

[0019] At room temperature of 20-26°C, first mix ethanol and water to form a mixed solvent, then dissolve citric acid and sodium carbonate in the mixed solvent, add furfuryl alcohol and maleic anhydride and stir evenly with a magnetic stirrer, and finally add oxalic acid and methanol , and continue to stir until the solid is completely dissolved to obtain a light yellow liquid with a slight aromatic smell and a pH value of 3.56.

Embodiment 2

[0021] The furfuryl alcohol resin optimization solution for wood modification based on compound catalysts includes the following raw material components in parts by weight: 65% furfuryl alcohol, 4.5% maleic anhydride, 2% citric acid, 1% oxalic acid, 4% sodium carbonate, and 1% methanol , ethanol 2.5% and distilled water 20%.

[0022] The preparation method is:

[0023] At room temperature of 20-26°C, first mix ethanol and water to form a mixed solvent, then dissolve citric acid and sodium carbonate in the mixed solvent, add furfuryl alcohol and maleic anhydride and stir evenly with a magnetic stirrer, and finally add oxalic acid and methanol , and continue to stir until the solid is completely dissolved to obtain a light yellow liquid with a slight aromatic smell and a pH value of 3.18.

Embodiment 3

[0025] The furfuryl alcohol resin optimization solution for wood modification based on compound catalysts includes the following raw material components in parts by weight: furfuryl alcohol 55%, maleic anhydride 3%, salicylic acid 1.15%, sodium carbonate 4%, methanol 1%, ethanol 2.5% % and distilled water 34%.

[0026] The preparation method is:

[0027] At room temperature of 20-26°C, first mix ethanol and water to form a mixed solvent, then dissolve maleic anhydride and sodium carbonate in the mixed solvent, add furfuryl alcohol and stir evenly with a magnetic stirrer, finally add methanol, continue to stir until solid Completely dissolved to obtain a light yellow liquid with a slight aromatic smell and a pH value of 4.12.

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Abstract

The invention relates to furfuryl alcohol resin optimizing liquid for wood modification based on a compound catalyst. The furfuryl alcohol resin optimizing liquid comprises the following components in parts by weight: 50-80% of furfuryl alcohol, 3-8% of maleic anhydride, 1-5% of auxiliary catalyst, 1-10% of stabilizing agent, 1-5% of solvent, and 20-50% of water. The wood optimizing liquid uses maleic anhydride as a main catalyst, uses a citric acid and an oxalic acid compound as the auxiliary catalyst, and is high in efficiency and environment-friendly; a modified wood has such advantages as prominent corrosion resistance, leachability resistance and size stability; the top grade of low-grade wood is realized; and the utilization rate and the service life of the wood are increased and prolonged. The optimizing liquid is free of poison and halogen in formulas, is excellent in environmental protecting performance, belongs to environment-friendly wood modification treatment optimizing liquid, and generates no environmental pollution in the production and use process. The wood modified by the optimizing liquid greatly improves the leachability resitance, the size stability, the corrosion resistance and the mechanical performance.

Description

technical field [0001] The invention relates to the technical field of wood processing and preservation, in particular to a furfuryl alcohol resin optimization solution for wood modification based on a composite catalyst. Background technique [0002] As one of the four basic materials (plastic, steel, cement, wood) in the world today, wood is the only renewable resource with the characteristics of regeneration, recycling and natural degradation. With the development of the economy and the continuous improvement of living standards, the social demand for wooden products is increasing, and the contradiction between supply and demand of wood has become increasingly prominent. In addition to rational use of existing plantation wood, prolonging the service life of wood is undoubtedly a solution. An important way for the contradiction between timber supply and demand. [0003] Due to the fast growth rate of plantation wood, the dimensional stability and mechanical properties of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52C08G16/02
CPCB27K3/52C08G16/0262
Inventor 唐荣燕王博
Owner NANJING BOJUN NEW MATERIAL CO LTD
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