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Rosin-based wood modifier, and preparation method and application thereof

A modifier, rosin-based technology, applied in wood treatment, wood heating, impregnation of wood, etc., can solve the problems of easy loss, limited application, low melting point of rosin, etc., achieve simple preparation method and treatment process, good dimensional stability , Overcome the effect of easy loss

Inactive Publication Date: 2021-01-01
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rosin has a low melting point and is easy to lose in wood, which limits its application in wood modification.

Method used

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  • Rosin-based wood modifier, and preparation method and application thereof
  • Rosin-based wood modifier, and preparation method and application thereof
  • Rosin-based wood modifier, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method and application of a rosin-based wood modifier, comprising the steps of:

[0032] 1) Dissolving rosin in toluene, adding glycidyl methacrylate, acid-binding agent and hydroquinone, and reacting at 120° C. for 7 hours under the protection of nitrogen. The molar ratio of rosin to glycidyl methacrylate is 1:1.

[0033] 2) The reaction product was cooled to room temperature, washed with water three times, dried and then evaporated to remove the solvent to obtain rosin-based acrylate.

[0034] 3) Dissolving rosin acrylate in pyridine, adding 1% azobisisobutyronitrile to prepare a 15% rosin-based wood modifier.

[0035] 4) Soak the poplar wood specimen in the modifier, impregnate the specimen under 0.08MPa vacuum condition for 30 minutes, then impregnate it under normal pressure for 10 hours, take out the specimen and bake it at 120°C for 10 hours, and extract it in ethanol for 6 hours , and finally baked to absolute dryness at 103°C.

[0036] The chem...

Embodiment 2

[0039] The preparation method of rosin-based acrylate is the same as in Example 1.

[0040] Subsequently, rosin acrylate was dissolved in pyridine, and 1% azobisisobutyronitrile was added to prepare a 30% rosin-based wood modifier.

[0041] Soak the poplar wood specimen in the modifier, immerse the specimen under 0.08MPa vacuum condition for 30 minutes, then impregnate it under normal pressure for 10 hours, take out the specimen and bake it at 120°C for 10 hours, extract it in ethanol for 6 hours, and finally Dry to dryness at 103°C.

Embodiment 3

[0043] A preparation method and application of a rosin-based wood modifier, comprising the steps of:

[0044] 1) Dissolving rosin in toluene, adding glycidyl methacrylate, acid-binding agent and hydroquinone, and reacting at 120° C. for 7 hours under the protection of nitrogen. The molar ratio of rosin to glycidyl methacrylate is 1:2.

[0045] 2) The reaction product was cooled to room temperature, washed with water three times, dried and then evaporated to remove the solvent to obtain rosin-based acrylate.

[0046] 3) Dissolving rosin acrylate in pyridine, adding 1% azobisisobutyronitrile to prepare a 15% rosin-based wood modifier.

[0047] 4) Soak the poplar wood specimen in the modifier, immerse the specimen under 0.08MPa vacuum condition for 30 minutes, then impregnate it under normal pressure for 10 hours, take out the specimen and bake it at 120°C for 10 hours, and extract it in ethanol for 6 hours. Finally, it was dried to absolute dryness at 103°C.

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Abstract

The invention discloses a rosin-based wood modifier, and a preparation method and application thereof. The preparation method comprises the following steps: 1, preparing acrylic acid modified rosin: 1), dissolving rosin or a rosin derivative in a first solvent, adding glycidyl methacrylate, an acid-binding agent and hydroquinone, and performing a reaction for a preset time; and 2) cooling the reaction product obtained in step 1), washing the cooled reaction product with water for at least one time, drying, and removing the first solvent to obtain the acrylic acid modified rosin; and (2) dissolving the acrylic acid modified rosin in a second solvent, and adding an initiator to prepare the rosin-based wood modifier. The wood modifier provided by the invention adopts renewable resource rosinas a main component, is safe, environment-friendly, non-toxic and pollution-free, not only can endow the wood with good dimensional stability, hydrophobicity and hardness, but also can overcome the easy-to-run-off property of the rosin through dipping treatment of the wood.

Description

technical field [0001] The invention belongs to the technical field of material processing, and specifically relates to a rosin-based wood modifier and a preparation method and application thereof. Background technique [0002] Wood and its products are widely used in interior decoration, furniture manufacturing, house construction and exterior decoration, but they have problems such as poor dimensional stability, low strength, and perishability, which affect the service life and use of their products. It is necessary to improve the quality of wood and its products. Dimensional stability and strength. [0003] At present, the methods for improving the dimensional stability and strength of wood and its products mainly include physical modification and chemical modification. Physical modification is mainly to improve the properties of wood by impregnating wood and its products. For example: paraffin impregnation, resin impregnation, etc. Chemical modification is mainly thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/50B27K3/08B27K5/04B27K5/00
CPCB27K3/08B27K3/50B27K5/001B27K5/04
Inventor 董友明王开立李建章张世锋
Owner NANJING FORESTRY UNIV
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