CN103113648A - Method for manufacturing environment-friendly board by using waste PCB (Printed Circuit Board) - Google Patents
Method for manufacturing environment-friendly board by using waste PCB (Printed Circuit Board) Download PDFInfo
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- CN103113648A CN103113648A CN2013100299057A CN201310029905A CN103113648A CN 103113648 A CN103113648 A CN 103113648A CN 2013100299057 A CN2013100299057 A CN 2013100299057A CN 201310029905 A CN201310029905 A CN 201310029905A CN 103113648 A CN103113648 A CN 103113648A
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- binding agent
- polypropylene
- stearic acid
- urotropine
- stearate
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Abstract
The invention provides a method for manufacturing an environment-friendly board by using a waste PCB (Printed Circuit Board), comprising the following steps of: (1) the preparation of a bonder: mixing polyolefin, stearic acid or stearate with urotropin to prepare the bonder; and (2) mixing the bonder acquired in the step (1) with waste PCB powder to acquire the environment-friendly board. The method is simple in operation; and the acquired environment-friendly board has high performance and can serve as an insulating material or a building material for manufacturing floor tiles, composite slabs and the like.
Description
Technical field: the present invention relates to a kind of method of utilizing discarded pcb board powder making sheet material.The sheet material of making can be used as insulating material, also can be used as the material of construction such as floor tile.The invention belongs to the Treatment and recovery technical field of trade waste.
Background technology:
Along with the fast development of global electronic technology, electronic waste comprises that waste computer, refrigerator, televisor, signal equipment etc. have become new environment hidden danger.According to statistics, the annual electronic waste of China has reached more than 100 ten thousand tons.Discarded printed circuit boards (PCB) is a kind of of electronic waste, wherein contain the higher metals of multiple recovery value such as gold and silver, copper, this becomes the Main Economic motivating force that waste printed circuit board reclaims industry, as the raising along with state of the art, the reduction of cost, discarded PCB per ton can extract the gold about 300 grams, and market value is near 100,000 yuan.Therefore present research emphasis also concentrates on the rare metal that how to reclaim in waste printed circuit board, and ignores the nonmetallic recycling problem of PCB.
The PCB non-metallic material are mainly the mixtures that forms with glass fibre, epoxies and phenolic resinoid.Wherein the glass fibre calorific value is low, is difficult to process by the method for burning; Epoxies and phenolic resinoid are thermosetting resin, are difficult to fusing and dissolving.At present, landfill is the extensive main method of processing useless PCB non-metallic material, but it is lost as rubbish, can cause a large amount of wastings of resources and environmental pollution.Pyrolysis method is also a kind of method of processing useless PCB non-metallic material, but owing to containing complicated organism in the PCB non-metallic material, will certainly produce multiple obnoxious flavour such as dioxin etc. in the process of processing, cause the secondary pollution to environment, and the pyrolysis method cost is high, complex process is not suitable for large-scale application.
Modern architecture industry high speed development needs a large amount of building boards, thereby consumes a large amount of timber, not only causes timber resources to peter out, and cost raises, and has indirectly caused environmental disruption.Therefore utilize useless PCB non-metallic material to make building board, not only can reduce the cost of building board, avoid expending a large amount of timber resources, process especially a kind of good method of useless PCB non-metallic material.
Summary of the invention:
The invention provides a kind of method of utilizing waste PCB to make high-performance sheet material, solve to a certain extent the problem of environmental pollution of waste circuit board nonmetallic material, can obtain the environment-friendly sheet of low cost, high weight again simultaneously.The sheet material that obtains can be used as insulating material, also can be used as the material of construction of Manufacture of Floor brick etc.
Particularly, the invention provides a kind of method of utilizing waste PCB powder to make environment-friendly sheet, it is characterized in that, comprise the steps:
(1) preparation of binding agent: polyolefine, stearic acid or stearate are mixed making described binding agent with urotropine;
(2) above-mentioned steps gained binding agent and waste PCB powder are mixed to get described environment-friendly sheet.
Preferably, described polyolefine is polypropylene or polyethylene.
Preferably, described stearate is sodium stearate.
Preferably, wherein step (1) and step (2) are specific as follows:
(1) preparation of binding agent: described polyolefine is polypropylene or polyethylene, described stearate is sodium stearate, and the gross weight with respect to binding agent, polypropylene or poly weight percent are 60%-70%, the weight percent of stearic acid or sodium stearate is 20%-25%, the weight percent of urotropine is 10% left and right, at first the preparation process of binding agent is specially mixes stearic acid or sodium stearate with urotropine, grinding powder, mix, add at last polypropylene or polyethylene, evenly mix, obtain described binding agent;
(2) above-mentioned binding agent being put into mould with waste PCB powder with the ratio of weight percent 60-70%:30-40% mixes, at first with mould and die preheating 5min, then with mold heated to 160 ℃-170 ℃, repeatedly pressurization in heat-processed, keep 10-15min at last under 30MPa-50MPa, turn off power supply, be cooled to unloading pressure after room temperature, molding namely gets high-performance environment-friendly sheet material.
Preferably, wherein said polyolefine is polypropylene (PP), and described stearic acid or stearate use stearic acid, and do not use sodium stearate, and polypropylene (PP), stearic acid and urotropine weight ratio are 6.5:2.5:1.
Preferably, the weight percent of polypropylene (or polyethylene) is 60%-70%, and the weight percent of stearic acid (or sodium stearate) is 20%-25%, and the weight percent of urotropine is 10% left and right.
Polypropylene (PP) is as the main component of high-performance adhesive, and nontoxic, tasteless, density is little, and acid and alkali-resistance has higher intensity, rigidity, but wear resistance generally, easily aging.So polypropylene can not be separately as the solidifying agent of bonding waste PCB powder.Add a small amount of urotropine in polypropylene (or polyethylene), can change the solidification process of polypropylene (or polyethylene), greatly improve polyacrylic wear resistance.In addition, stearic acid or sodium stearate are mixed with suitable ratio and polypropylene or polyethylene and urotropine and can be reached all comparatively outstanding effects of wear resistance, intensity and plate surface slickness.
The specific embodiment mode:
Embodiment 1: weigh is than being the polypropylene of 7:2:1 (PP), stearic acid and urotropine.At first stearic acid is mixed with urotropine, grinding powder adds polypropylene (PP) at last, mixes.This mixture and the waste PCB powder that are 3:7 with weight ratio mix, and put into the mould compacting.The first preheating 5min of mould, then with mold heated to 170 ℃, repeatedly pressurization, keep 15min at last under 40MPa in heat-processed, turns off power supply, is cooled to unloading pressure after room temperature, and molding namely gets high-performance environment-friendly sheet material.
Embodiment 2: weigh is than being the polypropylene of 6.5:2.5:1 (PP), stearic acid and urotropine.At first stearic acid is mixed with urotropine, grinding powder adds polypropylene (PP) at last, mixes.This mixture and the waste PCB powder that are 3:7 with weight ratio mix, and put into the mould compacting.The first preheating 5min of mould, then with mold heated to 170 ℃, repeatedly pressurization, keep 15min at last under 40MPa in heat-processed, turns off power supply, is cooled to unloading pressure after room temperature, and molding namely gets high-performance environment-friendly sheet material.The result demonstration, the sheet material that this embodiment obtains has higher surface smoothness than the sheet material of embodiment 1.
Embodiment 3: weigh is than being the polypropylene of 7:2:1 (PP), sodium stearate and urotropine.At first sodium stearate is mixed with urotropine, grinding powder adds polypropylene (PP) at last, mixes.This mixture and the waste PCB powder that are 3:7 with weight ratio mix, and put into the mould compacting.The first preheating 5min of mould, then with mold heated to 170 ℃, repeatedly pressurization, keep 15min at last under 40MPa in heat-processed, turns off power supply, is cooled to unloading pressure after room temperature, and molding namely gets high-performance environment-friendly sheet material.
Embodiment 4: weigh is than being the polyethylene of 7:2:1, stearic acid and urotropine.At first stearic acid is mixed with urotropine, grinding powder adds polyethylene at last, mixes.This mixture and the waste PCB powder that are 3:7 with weight ratio mix, and put into the mould compacting.The first preheating 5min of mould, then with mold heated to 170 ℃, repeatedly pressurization, keep 15min at last under 40MPa in heat-processed, turns off power supply, is cooled to unloading pressure after room temperature, and molding namely gets high-performance environment-friendly sheet material.
Comparative Examples 1: other condition is in the same manner as in Example 1, and difference is to replace polypropylene with polystyrene.The result demonstration, under the same test condition, the breaking tenacity of gained sheet material is 4/5ths left and right of embodiment 1 gained sheet material, surface smoothness is also obviously not as embodiment 1 gained sheet material.
Comparative Examples 2: other condition is identical with embodiment 3, and difference is to replace sodium stearate with calcium stearate.The result demonstration, under the same test condition, the breaking tenacity of gained sheet material and wear resistance are 4/5ths left and right of embodiment 1 gained sheet material, surface smoothness is also obviously not as embodiment 1 gained sheet material.
Comparative Examples 3: other condition is identical with embodiment 1, and difference is that the weight ratio of polypropylene (PP), stearic acid and urotropine is 8:1:1.The result demonstration, under the same test condition, the breaking tenacity of gained sheet material is 4/5ths left and right of embodiment 1 gained sheet material, surface smoothness is also obviously not as embodiment 1 gained sheet material.
Claims (5)
1. a method of utilizing waste PCB powder to make environment-friendly sheet, is characterized in that, comprises the steps:
(1) preparation of binding agent: polyolefine, stearic acid or stearate are mixed making described binding agent with urotropine;
(2) above-mentioned steps gained binding agent and waste PCB powder are mixed to get described environment-friendly sheet.
2. method claimed in claim 1, wherein said polyolefine is polypropylene or polyethylene.
3. method claimed in claim 1, wherein said stearate is sodium stearate.
4. method claimed in claim 1, wherein step (1) and step (2) are specific as follows:
(1) preparation of binding agent: described polyolefine is polypropylene or polyethylene, described stearate is sodium stearate, and the gross weight with respect to binding agent, polypropylene or poly weight percent are 60%-70%, the weight percent of stearic acid or sodium stearate is 20%-25%, the weight percent of urotropine is 10% left and right, at first the preparation process of binding agent is specially mixes stearic acid or sodium stearate with urotropine, grinding powder, mix, add at last polypropylene or polyethylene, evenly mix, obtain described binding agent;
(2) above-mentioned binding agent being put into mould with waste PCB powder with the ratio of weight percent 60-70%:30-40% mixes, at first with mould and die preheating 5min, then with mold heated to 160 ℃-170 ℃, repeatedly pressurization in heat-processed, keep 10-15min at last under 30MPa-50MPa, turn off power supply, be cooled to unloading pressure after room temperature, molding namely gets high-performance environment-friendly sheet material.
5. method claimed in claim 4, wherein said polyolefine is polypropylene (PP), uses stearic acid, does not use sodium stearate, polypropylene (PP), stearic acid and urotropine weight ratio are 6.5:2.5:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310029905.7A CN103113648B (en) | 2013-01-25 | 2013-01-25 | Method for manufacturing environment-friendly board by using waste PCB (Printed Circuit Board) |
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| CN201310029905.7A CN103113648B (en) | 2013-01-25 | 2013-01-25 | Method for manufacturing environment-friendly board by using waste PCB (Printed Circuit Board) |
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| CN103113648A true CN103113648A (en) | 2013-05-22 |
| CN103113648B CN103113648B (en) | 2015-05-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847370A (en) * | 2017-01-12 | 2017-06-13 | 惠州新联兴实业有限公司 | New PCB/CCL castoff regeneratives resistance slurry and preparation method thereof |
| CN110219428A (en) * | 2019-05-14 | 2019-09-10 | 广东欧铭新材料科技有限公司 | A kind of fire-proof and water-proof composite floor board and decorative panel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676298A (en) * | 2005-02-03 | 2005-10-05 | 上海交通大学 | Method for manufacturing regenerative board from base board material granule of waste printed circuit board |
| CN101037527A (en) * | 2007-03-29 | 2007-09-19 | 上海交通大学 | Method for preparing bakelite by using nonmetal material in waste printing circuit board |
| CN101591459A (en) * | 2009-07-02 | 2009-12-02 | 上海交通大学 | Utilize discarded printed circuit boards to prepare the method for wood plastic composite |
-
2013
- 2013-01-25 CN CN201310029905.7A patent/CN103113648B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676298A (en) * | 2005-02-03 | 2005-10-05 | 上海交通大学 | Method for manufacturing regenerative board from base board material granule of waste printed circuit board |
| CN101037527A (en) * | 2007-03-29 | 2007-09-19 | 上海交通大学 | Method for preparing bakelite by using nonmetal material in waste printing circuit board |
| CN101591459A (en) * | 2009-07-02 | 2009-12-02 | 上海交通大学 | Utilize discarded printed circuit boards to prepare the method for wood plastic composite |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847370A (en) * | 2017-01-12 | 2017-06-13 | 惠州新联兴实业有限公司 | New PCB/CCL castoff regeneratives resistance slurry and preparation method thereof |
| CN110219428A (en) * | 2019-05-14 | 2019-09-10 | 广东欧铭新材料科技有限公司 | A kind of fire-proof and water-proof composite floor board and decorative panel |
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| CN103113648B (en) | 2015-05-13 |
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