Method for mfg. glass fiber reinforced plastic product by nonmetal powder of waste circuit board

A waste circuit board and non-metallic technology, which is applied in the field of waste recycling and reuse, can solve the problems of pedestrian and vehicle accidents, water grates are prone to noise, and are not resistant to impact, etc., and achieve the effects of good toughness, energy saving, and good elastic recovery

Inactive Publication Date: 2006-06-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional manhole covers and water grates are cast iron manhole covers and water grates, which are expensive and easy to rust under natural conditions, and the water grates are prone to noise when vehicles pass by on the expressway
And because cast iron manhole covers and water grates have been stolen frequently, causing pedestrian and vehicle accidents
Manhole covers and water grates made of steel fiber reinforced cement-based composite materials have low strength, are not impact-resistant, and are easily broken under the vibration and rolling of locomotives, which also pose a safety hazard

Method used

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  • Method for mfg. glass fiber reinforced plastic product by nonmetal powder of waste circuit board
  • Method for mfg. glass fiber reinforced plastic product by nonmetal powder of waste circuit board
  • Method for mfg. glass fiber reinforced plastic product by nonmetal powder of waste circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 FRP product water grate made of non-metallic powder from waste circuit boards

[0047] A kind of method that utilizes the non-metallic powder of waste circuit board to make glass fiber reinforced plastics water grate, comprises the following steps:

[0048] (1) crushing, crushing

[0049] Firstly, the waste circuit boards are ground into powders ranging from 16 to 500 mesh through two processes of crushing and crushing;

[0050] (2) Separation of non-metallic powder and drying

[0051] Then use the difference in specific gravity between metal and non-metal to separate the non-metal powder and dry the non-metal powder;

[0052] (3) Design mold

[0053] Then design and manufacture the mold according to the requirements of the water grate;

[0054] (4) Add raw materials

[0055] Add glass fiber cloth, phenolic resin and one of unsaturated resin or epoxy resin, non-metallic powder, filler (including white carbon black, curing agent and accelerator) into the m...

Embodiment 2

[0077] Example 2 FRP manhole cover made of non-metallic powder from discarded circuit boards

[0078] A method for making a manhole cover made of glass fiber reinforced plastics using non-metallic powder of discarded circuit boards, comprising the following steps:

[0079] (1) crushing, crushing

[0080] Firstly, the waste circuit boards are ground into powders ranging from 16 to 500 mesh through two processes of crushing and crushing;

[0081] (2) Separation of non-metallic powder and drying

[0082] Then use the difference in specific gravity between metal and non-metal to separate the non-metal powder and dry the non-metal powder;

[0083] (3) Design mold

[0084] Then design and manufacture the mold according to the requirements of the manhole cover;

[0085] (4) Add raw materials

[0086] Add glass fiber cloth, phenolic resin and one of unsaturated resin or epoxy resin, non-metallic powder, filler (including white carbon black, curing agent and accelerator) into the ...

Embodiment 3

[0108] Embodiment 3 FRP product plate made of non-metallic powder of waste circuit board

[0109] A kind of method that utilizes the non-metallic powder of waste circuit board to make the plate of FRP product, comprises the following steps:

[0110] (1) crushing, crushing

[0111] Firstly, the waste circuit boards are ground into powders ranging from 16 to 500 mesh through two processes of crushing and crushing;

[0112] (2) Separation of non-metallic powder and drying

[0113] Then use the difference in specific gravity between metal and non-metal to separate the non-metal powder and dry the non-metal powder;

[0114] (3) Design mold

[0115] Then design and manufacture the mold according to the requirements of the plate;

[0116] (4) Add raw materials

[0117] Add glass fiber cloth, phenolic resin and one of unsaturated resin or epoxy resin, non-metallic powder, filler (including white carbon black, curing agent and accelerator) into the mold;

[0118] The weight ratio...

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PUM

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Abstract

A process for preparing glass fiber reinforced plastic product from the non-metal powder prepared from rejected circuit board includes such steps as breaking the rejected circuit board, pulverizing, separating to obtain non-metal powder, designing die set, loading raw materials in the die set, and die pressing. Its bending strength is increased by 35%.

Description

technical field [0001] The invention relates to a method for making glass fiber reinforced plastic products by using non-metallic powder of discarded circuit boards, and belongs to the technical field of waste product recovery and reuse. Background technique [0002] The existing FRP product technology is made of glass fiber, sizing agent, unsaturated resin or epoxy resin and phenolic resin as the base material through a composite process. [0003] The traditional manhole covers and water grates are cast iron manhole covers and water grates, which are expensive and easy to rust under natural conditions, and the water grates are prone to noise when vehicles pass by on the expressway. And because cast iron manhole cover and water grate have stolen phenomenon repeatedly, cause pedestrian and vehicle accident. Manhole covers and water grates made of steel fiber reinforced cement-based composite materials have low strength, are not impact-resistant, and are easily broken under t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B09B3/00B29B17/02B29K61/04B29K63/00B29K105/06
CPCY02W30/62Y02W30/82
Inventor 向东段广洪汪劲松牟鹏
Owner TSINGHUA UNIV
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