Anti-static wheat-straw wood-plastic composite material and preparation method thereof
A wood-plastic composite material and antistatic technology, which is applied in the field of antistatic straw wood-plastic composite materials, can solve the problems that the adhesive cannot play a good connection role and the performance of the board is unstable, and achieve high mixing uniformity of raw materials , Stirring and mixing efficiency is high, and the process conditions are easy to control
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Embodiment 1
[0023] Example 1 Antistatic straw wood-plastic composite material
[0024] An antistatic straw wood-plastic composite material, comprising the following raw materials in parts by weight:
[0025] 20-70 parts of wood fiber material, 50-150 parts of polypropylene resin, 3-10 parts of coupling agent, 5-30 parts of antistatic agent, 2-6 parts of lubricant, 10-30 parts of calcium carbonate, 0.1- 1 part, 3-5 parts of other additives.
[0026] The lignocellulosic material is made by putting wheat straw into a mill and grinding it into fibers. After sieving, 20-60 mesh particles are obtained, and then dried in an oven for 24 hours at a temperature of 110° C., so that the average weight of the wood powder is The moisture content is kept below 1%.
[0027] The coupling agent is one or more of titanate coupling agent and silane coupling agent.
[0028] Described lubricant is one or more in paraffin, stearic acid, zinc stearate, calcium stearate.
[0029] The antistatic agent is silan...
Embodiment 2
[0042] 1) Soak the wheat straw in 20% sodium hydroxide for 3 hours, pretreatment temperature is 110°C, put it in 60°C for dehydration and drying, then put the wheat straw into a mill and grind it into fibers, after sieving The 50-mesh particles are obtained, and then dried in an oven at a temperature of 110° C. for 24 hours, so that the average moisture content of the wood powder is kept below 1%.
[0043] 2) Place the wood flour, resin powder and coupling agent in the dry-processed formula weight portion in a high-speed mixer and mix until they are evenly mixed. The stirring temperature is 100°C and the stirring time is 8 minutes to obtain a hot mixed Material, spare.
[0044] Raw material formula: 50 parts of wood flour, 100 parts of polypropylene resin, 5 parts of silane coupling agent.
[0045] 3) Place the hot mix obtained in requirement 2) in a cold mixer to cool, and after the temperature of the hot mix drops to 40°C, add antistatic agents, lubricants and other additiv...
Embodiment 3
[0051]1) Soak wheat straw in 20% sodium hydroxide for 3 hours, pretreatment temperature is 110°C, put it in 60°C for dehydration and drying, then put wheat straw into a mill and grind it into fibers, after sieving The 60-mesh particles are obtained, and then dried in an oven at a temperature of 110°C for 24 hours, so that the average moisture content of the wood powder is kept below 1%.
[0052] 2) Place the wood powder, resin powder and coupling agent in the dry-processed formula weight portion in a high-speed mixer and heat and mix until uniform. The stirring temperature is 110°C and the stirring time is 10 minutes to obtain a hot mixed Material, spare.
[0053] Raw material formula: 70 parts of wood fiber material, 150 parts of polypropylene resin, 10 parts of silane coupling agent,.
[0054] 3) Place the hot mix obtained in requirement 2) in a cold mixer to cool, and after the temperature of the hot mix drops to 40°C, add antistatic agents, lubricants and other additives ...
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