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A kind of multifunctional resin dyeing modifier and preparation method thereof

A multi-functional, resin-based technology, used in manufacturing tools, wood treatment, wood processing appliances, etc., can solve problems such as difficulty in meeting product multi-performance requirements, non-reusable cost, poor light resistance and weather resistance, and achieve a good surface. Decorative properties, uniform and rich colors, and dimensionally stable effects

Inactive Publication Date: 2017-09-15
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The penetration and fixation process of commonly used water-soluble dyes in wood materials are contradictory. The dyes with good permeability have low binding force with the treated material, poor loss resistance, poor light resistance and weather resistance, and a large amount of wastewater is generated during the dyeing process, causing environmental hazards. Moreover, simple dyeing is difficult to meet the multi-performance requirements of the product
[0003] Resin impregnation modification can effectively improve the dimensional stability, mechanical strength, anti-biological degradation and other properties of wood materials such as wood, bamboo and rattan, but in the actual application process, there are poor permeability, excessive free formaldehyde, short storage period, and cannot be repeated. Utilization and high cost issues
Moreover, the resin impregnation modification and dyeing processes of wood materials such as general wood, bamboo and rattan are carried out separately, the production process is complicated, the equipment used is many, the cost is high, the effect is poor, and it is difficult to popularize and use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]Take the integrated modification of enhanced dyeing of plantation poplar as a specific embodiment:

[0046] 1) Preparation of melamine urea-formaldehyde resin

[0047] Synthetic resin main agent according to the following raw material ratio: 14.81kg of formaldehyde, 11.14kg of melamine, 7.01kg of methanol, 5.40kg of urea, 3.00kg of polymerization inhibitor and 40-60 parts of water.

[0048] Synthesis process: ①Put melamine and formaldehyde into the reaction kettle, add 20% sodium hydroxide solution to adjust the pH value to 9.2, heat up and stir to keep the temperature within 75°C. React for 1 hour; ②Add methanol and part of urea accounting for 50% of the weight of urea, add 40% sodium hydroxide solution to adjust the pH value to above 12, keep the temperature at 65°C, and react for 60min; ③Reduce the temperature, keep the temperature at 60°C, add 10% hydrochloric acid to adjust the pH value to 8-9; ④ Add the remaining urea, add 10% hydrochloric acid to adjust the pH va...

Embodiment 2

[0056] Take the enhancement-dyeing multi-effect modification of plantation Chinese fir as specific embodiment:

[0057] 1) Preparation of melamine urea-formaldehyde resin (same as Example 1)

[0058] 2) Preparation of dipping modification solution (the dye is basic lake blue, the rest is the same as in Example 1)

[0059] 3) Vacuum pressure impregnation treatment of wood: Chinese fir board 350 mm×100 mm×25 mm; put into the treatment tank; vacuumize to -0.10 MPa for 30 minutes; inhale the modifier solution; pressurize to 1.2 MPa, treat for 2 h; Material; air-dried until the moisture content is below 50%, then moved to the drying box, and artificially dried by increasing the temperature step by step, until the wood moisture content was about 10%, and the reinforced-dyed modified fir board was obtained.

[0060] 4) Performance testing

[0061] fir performance

Embodiment 3

[0063] Take the strengthening-dyeing multi-effect modification of the rattan material as a specific example:

[0064] 1) Preparation of melamine urea-formaldehyde resin (same as Example 1)

[0065] 2) Preparation of impregnation modification solution (same as Example 1)

[0066] 3) Rattan vacuum pressure impregnation treatment: hook leaf rattan 900 mm × D (rattan diameter 25 mm ~ 35 mm); put into the treatment tank; vacuumize to -0.08 MPa for 30 minutes; inhale the modified solution; pressurize to 1.0 MPa, treatment for 2 hours; discharge; air-dry until the moisture content is below 50%, then move to the drying box, adopt step-by-step temperature rise for artificial drying, and dry until the rattan moisture content is about 10%, and get enhanced-dyeing modification Rattan.

[0067] 4) Performance testing

[0068] Rattan properties

Sample size

material

Modified material

rate of change

Air dry density (g / cm 3 )

20mm×Dmm

0.213

0.382...

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PUM

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Abstract

The invention belongs to a multifunctional resin coloring modifier and a preparation method thereof. The multifunctional resin coloring modifier comprises, by weight, 10-35 parts of modified melamine urea formaldehyde resin, 1-10 parts of water soluble dye, 1-10 parts of dyeing assistants, 1-10 parts of fire retardants, and 50-80 parts of water. The modified melamine urea formaldehyde resin is prepared from, by weight, 30-50 parts of formaldehyde, 30-50 parts of melamine, 30-50 parts of methyl alcohol, 10-20 parts of urea, 10-20 parts of polymerization inhibitors, and 40-60 parts of water. According to the multifunctional resin coloring modifier and the preparation method thereof, dyeing and functional modifying of wood materials are integrated, the good modified characteristic of the dyed wood is achieved which the dye penetration, leveling property, color fastness, light resistance and the like are achieved. The multifunctional resin coloring modifier and the preparation method thereof have the advantages that operation is easy, implementation is easy, the production cost is low, a dyed material is large in density, high in strength, stable in dimension, resistant to abrasion, resistant to flame, uniform and rich in color, firm and durable, energy is saved in the production process, and environmental friendliness is achieved.

Description

technical field [0001] The invention belongs to a resin-type dyeing modifier and a preparation method thereof, which can carry out reinforcement and dyeing integrated impregnation and modification treatment on wood, bamboo and rattan. Background technique [0002] The penetration and fixation process of commonly used water-soluble dyes in wood materials are contradictory. The dyes with good permeability have low binding force with the treated material, poor loss resistance, poor light resistance and weather resistance, and a large amount of wastewater is generated during the dyeing process, causing environmental hazards. Moreover, simple dyeing is difficult to meet the multi-performance requirements of the product. [0003] Resin impregnation modification can effectively improve the dimensional stability, mechanical strength, anti-biological degradation and other properties of wood materials such as wood, bamboo and rattan, but in the actual application process, there are po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K5/02
CPCB27K3/52B27K5/02
Inventor 吕文华刘君良柴宇博郑雅娴许茂松王雪玉
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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