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
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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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