Method for preparing wood plastic composite material from waste printed circuit boards
A technology for wood-plastic composite materials and waste circuit boards, which is applied in the field of industrial waste recycling and preparation, can solve the problems of reduced anti-corrosion performance of wood-plastic composite materials, exhausted wood resources, and increased production process costs, and achieves good secondary processability. , The effect of simple processing technology and high product strength
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Embodiment 1
[0021] The raw material components are by weight: 35 parts of high-density polyethylene (HDPE) recycled materials, 30 parts of waste circuit board non-metallic material particles, 30 parts of wood flour, 2.5 parts of grafted maleic anhydride, 2 parts of zinc stearate parts, 0.5 parts of titanate coupling agent.
[0022] The first step is to mix and color wood powder, waste circuit board non-metallic material particles and plastic particles in proportion, then add other additives to the mixture, and modify it at high temperature with a high-speed mixer to make the components phase Dissolved into one, and then granulated by a screw granulator to produce wood-plastic particles.
[0023] The second step is to set the speed of the main motor of the extruder to 15r / min, the speed of the feeding motor to 7r / min, the melt pressure of the extruder to 9MPa, the temperature of the head to 180°C, and the extrusion speed to 500mm / min. Extruded by a twin-screw extruder, it becomes a wood-p...
Embodiment 2
[0027] The raw material components are by weight: 30 parts of high-density polyethylene (HDPE), 25 parts of waste circuit board non-metallic material particles, 40 parts of wood flour, 2.5 parts of grafted maleic anhydride, 2 parts of stearic acid, aluminum 0.5 parts of ester coupling agent.
[0028] The first step is to mix and color wood powder, waste circuit board non-metallic material particles and plastic particles in proportion, then add other additives to the mixture, and modify it at high temperature with a high-speed mixer to make the components compatible Integrate into one, and then granulate to produce wood-plastic particles through a screw granulator.
[0029] The second step is to set the speed of the main motor of the extruder to 15r / min, the speed of the feeding motor to 8r / min, the melt pressure of the extruder to 12MPa, the temperature of the die head to 180°C, and the extrusion speed to 700mm / min. It is extruded by a twin-screw extruder and cooled to make a...
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