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

Inactive Publication Date: 2011-04-06
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extensive use of wood-based materials will inevitably lead to the depletion of wood resources and the reduction of the corrosion resistance of wood-plastic composite materials
In addition, the large amount of energy required for drying will also increase the cost of the production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention discloses a method for preparing a wood plastic composite material from waste printed circuit boards, and belongs to the technical field of industrial waste recovery. Non-metal materials of the waste circuit boards obtained by crushing and sorting are taken as raw materials to replace partial wood meal to produce the wood plastic composite material. The method comprises the following steps: preparing conveniently formed wood plastic particles from 25 to 35 portions of thermal plastic plastics, 15 to 40 portions of non-metal material grains of the waste circuit boards, 30 to 60 portions of wood meal, 2 to 4 portions of graft compatilizer, 1 to 2 portions of lubricant and 0.3 to 0.6 portion of coupling agent by metering, mixing and plasticating; and performing extrusion molding on the wood plastic particles in an extruder, and performing cutting and forming after cooling setting. The method not only can solve the problems of processing and pollution of the non-metal materials of the waste circuit boards, but also can reduce the production cost of the wood plastic composite material.

Description

technical field [0001] The invention relates to a method for recycling and preparing industrial waste in the technical field of composite materials, in particular to a method for preparing wood-plastic composite materials by using waste printed circuit boards. Background technique [0002] Waste printed circuit board (PCB) is a kind of electronic waste, which contains more than a dozen metals with high recovery value such as copper, gold, silver, palladium, etc. For example, the metal content in waste mobile phone circuit boards is: gold 280g / t, Silver 2kg / t, copper 1000g / t, palladium 100g / t. The value of metals is the main economic driving force of the waste circuit board recycling industry. The research focus of researchers is also mainly on the recovery of rare and valuable metals in waste printed circuit boards, while ignoring the recycling and reuse of non-metals. [0003] At present, the crushing method is often used to separate the metal and non-metal in the printed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/12C08L23/00C08L25/06C08L27/06C08L97/02C08L51/06C08K13/08
Inventor 许振明郭杰施迎春
Owner SHANGHAI JIAOTONG UNIV
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