Method of preparing wood-plastic composite material with modified wood powder and waste plastic
A wood-plastic composite material and waste plastic technology, applied in the field of wood-plastic composite material preparation, can solve the problems of poor mechanical properties of wood-plastic composite materials, low interface compatibility, low polarity of blends, etc., and achieve broad market application Prospects, low equipment requirements, and simple preparation process
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Embodiment 1
[0026] Remove the dust from the discarded branches, and then use a mill to grind them into wood powder with a fineness of 120 mesh, and dry them at 110°C to make the water content ≤ 2%. Take 500 grams of dried wood powder, add 10 grams of isocyanate, 15 grams of maleic anhydride grafted polyethylene, and 10 grams of nitrile rubber in sequence, and mix them with wood powder in a high-speed mixer for 5 minutes before discharging to obtain Modified wood flour powder for standby.
[0027] Clean and crush the recycled plastics of PVC and PE with a weight ratio of 1:1 into pellets with a particle size of 10mm, dry them to make their moisture content ≤ 2%, and take 450 grams for later use.
[0028] Get the mixture of 500 grams of the above-mentioned standby modified wood powder and 450 grams of waste plastic particles and 15 grams of lubricant stearic acid, 15 grams of foaming agent sodium bicarbonate and 20 grams of foaming agent zinc oxide and add it to a high-speed mixer. Mix at ...
Embodiment 2
[0031] The waste moso bamboo is cleaned, crushed, and then ground into bamboo powder with a fineness of 100 mesh with a mill, and dried at 130°C to make the water content ≤ 2%. Take 600 grams of dried bamboo powder, then add 12 grams of titanate coupling agent, 18 grams of hexamethyldisilazane coupling agent, and 30 grams of ethylene-methacrylic acid copolymer one by one at high speed. After mixing with wood powder in the mixer for 10 minutes, the material is discharged to obtain modified moso bamboo powder for subsequent use.
[0032] Clean and crush the recycled plastics of PVC and PP with a weight ratio of 1:1 into pellets with a particle size of 12mm, dry them to make their moisture content ≤ 2%, and take 350 grams for use.
[0033] Take 600 grams of the above-mentioned spare modified moso bamboo powder, 350 grams of waste plastic granule powder, 20 grams of strontium stearate lubricant, 20 grams of foaming agent toluenesulfonylsemicarbazide, 10 grams of zinc carbonate as ...
Embodiment 3
[0036] Clean the peanut shells, crush them, and grind them into powder with a fineness of 50 mesh with a mill, and dry them at 120°C to make the water content ≤ 2%. Take 750 grams of dried peanut shell powder, then add 25 grams of styrene-maleic anhydride copolymer, 15 grams of aluminate coupling agent, and 20 grams of vinyl ethoxysilane coupling agent one by one at high speed. Mix with peanut shell powder in a mixer for 20 minutes and discharge to obtain modified peanut shell powder for later use.
[0037] Wash and crush recycled PVC, PE, and PP plastics with a weight ratio of 1:1:1 into pellets with a particle size of less than 8mm, dry them to make their moisture content ≤2%, and take 300 grams for use.
[0038] Take 600 grams of the above-mentioned spare modified peanut shell powder, 300 grams of waste plastic granules, 40 grams of paraffin wax as a lubricant, 25 grams of foaming agent azodicarbonamide, and zinc oxide, a foaming aid composed of a ratio of 1:1. Mix 35 gram...
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