Phenol formaldehyde adhesive synthesized by using waste preservative timber and preparation method thereof
A technology of phenolic resin and adhesive, applied in the direction of adhesive, aldehyde/ketone condensation polymer adhesive, adhesive type, etc., can solve the problem of increased residue rate, avoid environmental pollution, improve comprehensive utilization rate and add value effect
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Embodiment 1
[0049] 1. Crushing of waste preservative wood
[0050] The waste anti-corrosion wood Chinese fir after being treated with CCA (copper chromium arsenic water-soluble preservative) is crushed into wood powder, and the particle size of the wood powder is 80 mesh;
[0051] 2. Liquefaction of wood powder
[0052] 1) wood powder, phenol, catalyst sulfuric acid solution and polymerization inhibitor tetralin are added to a three-necked glass bottle and mixed uniformly, wherein the mass percentage concentration of sulfuric acid solution is 36%; the weight ratio of wood powder and phenol is 1: 3; the weight ratio of sulfuric acid solution and phenol is 6: 100; the weight ratio of tetralin and phenol is 20: 100;
[0053] 2) Place the three-necked glass bottle in an oil bath preheated to 150°C, install a condenser, stir and mix well, and carry out liquefaction treatment of wood powder at 150°C to obtain a liquefaction treatment mixture, wherein the stirring rate is 1058rpm ; The liquefa...
Embodiment 2
[0067] 1. Crushing of waste preservative wood
[0068] The waste antiseptic wood Populus tomentosa treated with ACQ preservative (a water-soluble preservative compounded with ammonia-soluble alkylamine copper quaternary ammonium salt and copper salt) is pulverized into wood powder, and the particle size of the wood powder is 20 mesh;
[0069] 2. Liquefaction of wood powder
[0070] 1) Add poplar wood powder, phenol, sulfuric acid solution and decahydronaphthalene into a three-necked glass bottle and mix evenly, wherein the mass percentage concentration of the sulfuric acid solution is 40%; the weight ratio of wood powder and phenol is 1: 4; The weight ratio of solution and phenol is 8: 100; The weight ratio of decalin and phenol is 25: 100;
[0071] 2) Put the three-necked glass bottle in an oil bath preheated to 160°C, install the condenser, stir and mix well, and carry out liquefaction treatment of wood powder at 160°C to obtain a liquefaction treatment mixture, wherein the...
Embodiment 3
[0082] 1. Crushing of waste preservative wood
[0083] The waste anticorrosion wood masson pine after ACQ (water-soluble preservative compounded with ammonia-soluble alkylamine copper quaternary ammonium salt and copper salt) preservative treatment is pulverized into wood powder, and the particle size of the wood powder is 50 orders;
[0084] 2. Liquefaction of wood flour
[0085] 1) Add wood powder, phenol, sulfuric acid solution and ethylene carbonate to a three-necked glass bottle and mix evenly, wherein the mass percent concentration of the sulfuric acid solution is 30%; the weight ratio of wood powder and phenol is 1:5; the sulfuric acid solution The weight ratio with phenol is 10:100; the weight ratio of ethylene carbonate and phenol is 15:100;
[0086] 2) Place the three-necked glass bottle in an oil bath preheated to 150°C, install a condenser, stir and mix well, and carry out liquefaction treatment of wood powder at 150°C to obtain a liquefaction treatment mixture, w...
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