CN101591459A - Utilize discarded printed circuit boards to prepare the method for wood plastic composite - Google Patents
Utilize discarded printed circuit boards to prepare the method for wood plastic composite Download PDFInfo
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- CN101591459A CN101591459A CNA2009100543134A CN200910054313A CN101591459A CN 101591459 A CN101591459 A CN 101591459A CN A2009100543134 A CNA2009100543134 A CN A2009100543134A CN 200910054313 A CN200910054313 A CN 200910054313A CN 101591459 A CN101591459 A CN 101591459A
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Abstract
The discarded printed circuit boards that utilizes that the invention discloses a kind of trade waste recovery technology field prepares the method for wood plastic composite, will be through the waste circuit board nonmetallic material that obtains after broken and the sorting as starting material, the instead of part wood powder is used to produce wood plastic composite.With thermoplastics 25-35 part, waste circuit board nonmetallic material particle 15-40 part, wood powder 30-60 part, grafting compatilizer 2-4 part, lubricant 1-2 part, coupling agent 0.3-0.6 part is sent wooden plastic particles into forcing machine then and is carried out extrusion moulding, excision forming behind cooling and shaping through measuring, mix and plasticating and make the wooden plastic particles of being convenient to moulding.The present invention both can solve the disposal and the pollution problem of waste circuit board nonmetallic material, also can reduce the production cost of wood plastic composite.
Description
Technical field
That the present invention relates to is a kind of trade waste recovery preparation method of technical field of composite materials, specifically is a kind of method of utilizing discarded printed circuit boards to prepare wood plastic composite.
Background technology
Discarded printed circuit boards (PCB) is a kind of of electronic waste, wherein contains tens kinds of metals that recovery value is higher such as copper, gold and silver, palladium, as the metal content in the waste mobile phone circuit card is: golden 280g/t, silver-colored 2kg/t, copper 1000g/t, palladium 100g/t.The value of metal is the main economic motivating force that waste printed circuit board reclaims industry, and the emphasis of investigator's research also mainly concentrates in the recovery of rare precious metal and valuable metal in the discarded printed circuit boards, and ignores nonmetallic recovery and reuse problem.
At present, the metal in the method separation printed circuit board (PCB) of many employing fragmentations and nonmetal, the main metal that reclaims wherein, and the non-metallic material in the discarded printed circuit boards are lost as rubbish.Non-metallic material in the printed circuit board (PCB) mainly are the mixtures of forming with glass fibre, epoxies and phenolic resinoid.Wherein epoxies and phenolic resinoid are thermosetting resin, are difficult to fusing and dissolving; The glass fibre calorific value is lower, can't use the method for burning to handle.Landfill is the extensive at present main method of handling waste and old printed circuit board, loses but it is used as rubbish, can cause a large amount of wastings of resources and environmental pollution.Document " pyrolysis of printed wiring board waste and product analysis thereof " (Sun Lushi, Lu Jidong etc., " chemistry of fuel journal " the 3rd phase in 2002) and document " the pyrolysis experimental study of substrate for printed circuit board " (Peng Ke etc., " Techniques and Equipment for Environmental Pollution Control " 2004 the 5th phases) introduced with method for pyrolysis and handled waste and old printed circuit board.This method mainly is to make the polymer among the PCB have material to be cracked into small molecules alkane, can do fuel and industrial chemicals use after rationally reclaiming; Simultaneously inorganics such as glass fibre scarcely changes among the PCB, still exists with the solid waste form.Owing in PCB, contain a spot of macromolecule organic material, and in pyrolytic process, produce a lot of obnoxious flavoures (can generate many bromos dibenzo dioxan and PBDF) as polybromodiphenyl ether.Therefore, this method exists cost height, complex process, causes problems such as secondary environmental pollution, is not the Perfected process of handling non-metallic material in the discarded printed circuit boards.
Wood plastic composite is meant and adopts woody type material and thermoplastics (contain and reclaim plastics), through the mixing new green environment protection material of being processed into.Characteristics such as attractive in appearance, low maintenance that wood plastic composite has, moisture-proof anticorrosive erosion property are widely used in fields such as bed board, railroad sleeper and garden landscape.A kind of as in the woody type material of wood powder is one of main raw material(s) of producing wood plastic composite.
Through the retrieval of prior art is found, patent publication No. be CN1857884A patent disclosure a kind of wood plastic composite and preparation of plates method thereof.The addition of the woody type material in this method is 60～75%, and requires the woody type material is carried out drying, makes its water ratio≤2%.A large amount of uses of woody type material will cause the exhaustion of timber resources and the reduction of wood plastic composite Corrosion Protection.In addition, dry required a large amount of energy consumptions also can increase the cost of production technique.Therefore, the equivalent material of searching wood powder is protected timber resources and is reduced production costs and becomes the task of top priority of wood plastic composite manufacturer.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of method of utilizing discarded printed circuit boards to prepare wood plastic composite is provided, will be through the waste circuit board nonmetallic material that obtains after broken and the sorting as starting material, the instead of part wood powder is used for the production of wood plastic composite, waste circuit board nonmetallic material particle and thermoplastics, wood powder, mix lubricant is even, mixing to suitable degree after the cooling, granulation, promptly obtain the environment-friendly type wood plastic composite.
The present invention is achieved by the following technical solutions, the present invention includes following steps:
The first step, by weight proportion 25～35 parts of thermoplasticss, 15～40 parts of waste circuit board nonmetallic material particles, wood powder 30～60,2～4 parts of grafting compatilizers, 1～2 part of lubricant and coupling agent are mixed the processing of plasticating for 0.3～0.6 part, make wooden plastic particles;
Described thermoplastics for the polyethylene (PE) that reclaim to obtain, polypropylene (PP), etc. a kind of or its combination in polyolefine, polystyrene (PS) or the polyvinyl chloride (PVC).
Described waste circuit board nonmetallic material particle is meant the non-metallic material broken material of waste printed circuit board through obtaining behind the cracking and sorting, the non-metallic material particle that obtains after selecting by 80 mesh sieves again.
The fineness of described wood powder is 80 order all-pass mistakes, and the moisture content in this wood powder is less than 2%.
Described grafting compatilizer is a kind of or its combination in polyolefine (PP, PE) grafted maleic anhydride, ethane-acetic acid ethyenyl copolymer resins grafted maleic anhydride or the resulting graft copolymer of polyolefin elastomer POE grafted maleic anhydride.
Described lubricant is a kind of or its combination in stearic acid, Zinic stearas, calcium stearate, stearic amide, stearic acid butyl ester, ethylene bis stearic acid amide or the methylene bis stearic amide.
Described coupling agent is a kind of or its combination in titanate coupling agent, aluminate coupling agent or the silane coupling agent.
Described mixing is plasticated to handle and is meant by the granulation after dual-screw pelletizer is plasticated of high speed mixer batch mixing.
Second step, wooden plastic particles is sent into forcing machine carry out extrusion moulding and handle, and then behind cooling and shaping, make wood plastic composite.
Described extrusion moulding is handled and is meant that the main motor speed that forcing machine is set is 15r/min, reinforced motor speed 7～8r/min, extrusion machine fused mass pressure 9～12MPa, 180 ℃ of head temperatures, extruded velocity 500～700mm/min.
The wood plastic composite that the present invention prepares gained has the advantage of timber and plastics performance concurrently, and product strength height, acid-alkali-corrosive-resisting, secondary workability are good, can saw, can follow closely, can bore, can dig.Complete processing of the present invention is simple, in accordance with regulations the prescription and the extrusion moulding condition under, can continuously produce the wood plastic composite product.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
Feed composition is by weight: 35 parts of high density polyethylene(HDPE) (HDPE) reclaimed materials, 30 parts of waste circuit board nonmetallic material particles, 30 parts of wood powders, 2.5 parts of grafting grafted maleic anhydrides, 2 parts of Zinic stearass, 0.5 part of titanate coupling agent.
The first step, earlier wood powder, waste circuit board nonmetallic material particle and plastic grain are mixed in proportion painted after; in mixture, add other auxiliary agent then; high temperature modified by high speed mixer, each component is mixed be integral, generate wooden plastic particles through the screw pelletizer granulation again.
The second main motor speed that goes on foot, is provided with forcing machine is 15r/min, reinforced motor speed 7r/min, extrusion machine fused mass pressure 9MPa, 180 ℃ of head temperatures, extruded velocity 500mm/min, with wooden plastic particles by the twin screw extruder extrusion moulding, cooling back wood plastic composite.
After tested, the hardness (H of gained wood plastic composite
D) be 65, thickness swelling rate % is 0.29, and MOR MPa is 22.5, and Young's modulus MPa is 3620, unnotched impact strength KJ/m
2Be 4.2, holding screw power N is 1590.
In the above-mentioned data: hardness records according to the regulation of GB/T 9342-1988; Thickness swelling rate carries out according to 4.5 regulation among the GB/T 17657-1999, and soak time is 24h in water; MOR and Young's modulus record according to 4.9 regulation among the GB/T 17657-1999; Unnotched impact strength records according to regulation among the GB/T 1034; Holding screw power records according to 4.10 regulation among the GB/T 17657-1999.
Embodiment 2
Feed composition is by weight: 30 parts of high density polyethylene(HDPE)s (HDPE), 25 parts of waste circuit board nonmetallic material particles, 40 parts of wood powders, 2.5 parts of grafting grafted maleic anhydrides, 2 parts of stearic acid, 0.5 part of aluminate coupling agent.
The first step, with wood powder, waste circuit board nonmetallic material particle and plastic grain mix in proportion painted after; in mixture, add other auxiliary agent then; high temperature modified by high speed mixer, each component is mixed be integral, generate wooden plastic particles through the screw pelletizer granulation again.
The second main motor speed that goes on foot, is provided with forcing machine is 15r/min, reinforced motor speed 8r/min, extrusion machine fused mass pressure 12MPa, 180 ℃ of head temperatures, extruded velocity 700mm/min by the twin screw extruder extrusion moulding, makes wood plastic composite through cooling with wooden plastic particles.
After tested, the hardness (H of gained wood plastic composite
D) be 72, thickness swelling rate % is 0.2, and MOR MPa is 21.6, and Young's modulus MPa is 3390, unnotched impact strength KJ/m
2Be 3.9, holding screw power N is 1678.Testing method is with embodiment 1.
The embodiment performance test results gathers as following table 1:
| Technical indicator | Embodiment 1 | Embodiment 2 | |
| Hardness | ≥58 | 65 | 72 |
| The absorption thickness rate of expansion, % | ≤1 | 0.29 | 0.2 |
| MOR, MPa | ≥20 | 22.5 | 21.6 |
| Young's modulus, MPa | ≥1800 | 3620 | 3390 |
| Non-notch impacts, KJ/m 2 | - | 4.2 | 3.9 |
| Hold screw power, N | ≥800 | 1590 | 1678 |
As shown in table 1, the wood plastic composite that present embodiment prepares gained compared with prior art has the characteristic of high strength, acid-alkali-corrosive-resisting, and the while preparation process simply need not specific installation and can finish.
Claims (8)
1, a kind of method of utilizing discarded printed circuit boards to prepare wood plastic composite is characterized in that, may further comprise the steps:
The first step, by weight proportion 25～35 parts of thermoplasticss, 15～40 parts of waste circuit board nonmetallic material particles, wood powder 30～60,2～4 parts of grafting compatilizers, 1～2 part of lubricant, 0.3～0.6 part of coupling agent and pigment dyestuff are mixed the processing of plasticating for 1～2 part, make wooden plastic particles;
Second step, wooden plastic particles is sent into forcing machine carry out extrusion moulding and handle, and then behind cooling and shaping, make wood plastic composite.
2, the preparation method of wood plastic composite according to claim 1 is characterized in that, described thermoplastics for the polyethylene that reclaim to obtain, polypropylene, etc. a kind of or its combination in polyolefine, polystyrene or the polyvinyl chloride.
3, the preparation method of wood plastic composite according to claim 1, it is characterized in that, described waste circuit board nonmetallic material particle is meant the non-metallic material broken material of waste printed circuit board through obtaining behind the cracking and sorting, the non-metallic material particle that obtains after selecting by 80 mesh sieves again.
4, the preparation method of wood plastic composite according to claim 1 is characterized in that, the fineness of described wood powder is 80 order all-pass mistakes, and the moisture content in this wood powder is less than 8%.
5, the preparation method of wood plastic composite according to claim 1, it is characterized in that described grafting compatilizer is a kind of or its combination in polyolefine grafted maleic anhydride, ethane-acetic acid ethyenyl copolymer resins grafted maleic anhydride or the resulting graft copolymer of polyolefin elastomer grafted maleic anhydride.
6, the preparation method of wood plastic composite according to claim 1, it is characterized in that described lubricant is a kind of or its combination in stearic acid, Zinic stearas, calcium stearate, stearic amide, stearic acid butyl ester, ethylene bis stearic acid amide or the methylene bis stearic amide.
7, the preparation method of wood plastic composite according to claim 1 is characterized in that, described coupling agent is a kind of or its combination in titanate coupling agent, aluminate coupling agent or the silane coupling agent.
8, the preparation method of wood plastic composite according to claim 1 is characterized in that, described mixing is plasticated to handle and is meant by the granulation after dual-screw pelletizer is plasticated of high speed mixer batch mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100543134A CN101591459B (en) | 2009-07-02 | 2009-07-02 | Method for preparing wood plastic composite material from waste printed circuit boards |
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|---|---|---|---|
| CN2009100543134A CN101591459B (en) | 2009-07-02 | 2009-07-02 | Method for preparing wood plastic composite material from waste printed circuit boards |
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| CN101591459A true CN101591459A (en) | 2009-12-02 |
| CN101591459B CN101591459B (en) | 2011-04-06 |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101954678A (en) * | 2010-10-28 | 2011-01-26 | 中南大学 | Process for preprocessing waste printed circuit board before separation |
| CN102115587A (en) * | 2010-12-30 | 2011-07-06 | 李兵 | Polymer section and preparation method thereof |
| CN102152373A (en) * | 2010-12-30 | 2011-08-17 | 陈耀武 | Zero-carbon high-fiber environment-friendly sheet synthesized by waste circuit board powder and production process thereof |
| CN102304280A (en) * | 2011-06-16 | 2012-01-04 | 肖超锋 | Formaldehyde-free zero-carbon environmentally-friendly board synthetized by circuit board and manufacture technology thereof |
| WO2012088694A1 (en) * | 2010-12-30 | 2012-07-05 | Chen Yaowu | Plate synthesized by waste circuit board powder and manufacturing process thereof |
| CN102689347A (en) * | 2012-06-15 | 2012-09-26 | 广东世环环保科技有限公司 | Environment-friendly radix aucklandiae plate synthesized by abandoned circuit board and plant fibers and preparation process of environment-friendly radix aucklandiae plate |
| CN102161806B (en) * | 2010-02-24 | 2012-10-24 | 郭玉文 | Waste printed circuit board nonmetal powder/polyvinyl chloride/wood meal composite material and preparation method thereof |
| CN103113648A (en) * | 2013-01-25 | 2013-05-22 | 北京交通大学 | Method for manufacturing environment-friendly board by using waste PCB (Printed Circuit Board) |
| EP2722142A1 (en) * | 2011-06-16 | 2014-04-23 | Guangdong Wep Energy-Saving Technology Co., Ltd. | Circuit-board powder made eco-friendly panel free from aldehyde and carbon emission and production method |
| CN103756345A (en) * | 2014-01-16 | 2014-04-30 | 上海绿澄环保科技有限公司 | Method for manufacturing plastic wood |
| CN103788448A (en) * | 2012-11-01 | 2014-05-14 | 常州翔宇资源再生科技有限公司 | Resin plastic wood prepared from waste plastic of waste circuit board, and preparation method and application thereof |
| CN103834100A (en) * | 2013-12-05 | 2014-06-04 | 江苏理工学院 | Enhanced type resin-plastic composite board prepared from waste PCB powder and preparation method thereof |
| CN104672701A (en) * | 2015-02-04 | 2015-06-03 | 宁夏兴国新型材料科技有限公司 | Foamed wood-plastic material produced by recycling reclaimed materials and manufacturing method thereof |
| CN106221076A (en) * | 2016-08-30 | 2016-12-14 | 张家港市星泰防火保温材料有限公司 | A kind of sleeper and manufacture method thereof |
| CN106746905A (en) * | 2016-12-19 | 2017-05-31 | 清远市鑫叶新型装饰材料有限公司 | A kind of utilization waste print circuit board powder is the architectural decoration material of raw material |
| CN107090155A (en) * | 2017-06-27 | 2017-08-25 | 湖南师范大学 | A kind of method that utilization printed circuit board (PCB) non-metal powder strengthens wood plastic composite |
| CN116218067A (en) * | 2023-02-01 | 2023-06-06 | 盐城工学院 | Preparation method of circuit board nonmetal powder reinforced recycled polyethylene composite material |
| CN116574391A (en) * | 2023-04-14 | 2023-08-11 | 湖南映宏新材料股份有限公司 | Method for manufacturing wood-plastic composite material by using waste circuit board resin powder |
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| CN102161806B (en) * | 2010-02-24 | 2012-10-24 | 郭玉文 | Waste printed circuit board nonmetal powder/polyvinyl chloride/wood meal composite material and preparation method thereof |
| CN101954678B (en) * | 2010-10-28 | 2012-07-25 | 中南大学 | Process for preprocessing waste printed circuit board before separation |
| CN101954678A (en) * | 2010-10-28 | 2011-01-26 | 中南大学 | Process for preprocessing waste printed circuit board before separation |
| US20130274382A1 (en) * | 2010-12-30 | 2013-10-17 | Chaofeng Xiao | Plate synthesized by waste circuit board powder and manufacturing process thereof |
| CN102152373A (en) * | 2010-12-30 | 2011-08-17 | 陈耀武 | Zero-carbon high-fiber environment-friendly sheet synthesized by waste circuit board powder and production process thereof |
| CN102152373B (en) * | 2010-12-30 | 2012-07-04 | 肖超锋 | Zero-carbon high-fiber environment-friendly sheet synthesized by waste circuit board powder and production process thereof |
| WO2012088694A1 (en) * | 2010-12-30 | 2012-07-05 | Chen Yaowu | Plate synthesized by waste circuit board powder and manufacturing process thereof |
| CN102115587B (en) * | 2010-12-30 | 2012-04-18 | 李兵 | Polymer section and preparation method thereof |
| CN102115587A (en) * | 2010-12-30 | 2011-07-06 | 李兵 | Polymer section and preparation method thereof |
| CN102304280B (en) * | 2011-06-16 | 2012-12-26 | 肖超锋 | Formaldehyde-free zero-carbon environmentally-friendly board synthetized by circuit board and manufacture technology thereof |
| EP2722142A1 (en) * | 2011-06-16 | 2014-04-23 | Guangdong Wep Energy-Saving Technology Co., Ltd. | Circuit-board powder made eco-friendly panel free from aldehyde and carbon emission and production method |
| CN102304280A (en) * | 2011-06-16 | 2012-01-04 | 肖超锋 | Formaldehyde-free zero-carbon environmentally-friendly board synthetized by circuit board and manufacture technology thereof |
| EP2722142A4 (en) * | 2011-06-16 | 2015-03-11 | Guangdong Wep Energy Saving Technology Co Ltd | Circuit-board powder made eco-friendly panel free from aldehyde and carbon emission and production method |
| CN102689347A (en) * | 2012-06-15 | 2012-09-26 | 广东世环环保科技有限公司 | Environment-friendly radix aucklandiae plate synthesized by abandoned circuit board and plant fibers and preparation process of environment-friendly radix aucklandiae plate |
| CN103788448B (en) * | 2012-11-01 | 2016-04-13 | 常州翔宇资源再生科技有限公司 | Resin plastic wood that a kind of waste printed circuit board plastic waste is made and its production and use |
| CN103788448A (en) * | 2012-11-01 | 2014-05-14 | 常州翔宇资源再生科技有限公司 | Resin plastic wood prepared from waste plastic of waste circuit board, and preparation method and application thereof |
| CN103113648A (en) * | 2013-01-25 | 2013-05-22 | 北京交通大学 | Method for manufacturing environment-friendly board by using waste PCB (Printed Circuit Board) |
| CN103113648B (en) * | 2013-01-25 | 2015-05-13 | 北京交通大学 | Method for manufacturing environment-friendly board by using waste PCB (Printed Circuit Board) |
| CN103834100A (en) * | 2013-12-05 | 2014-06-04 | 江苏理工学院 | Enhanced type resin-plastic composite board prepared from waste PCB powder and preparation method thereof |
| CN103756345A (en) * | 2014-01-16 | 2014-04-30 | 上海绿澄环保科技有限公司 | Method for manufacturing plastic wood |
| CN104672701A (en) * | 2015-02-04 | 2015-06-03 | 宁夏兴国新型材料科技有限公司 | Foamed wood-plastic material produced by recycling reclaimed materials and manufacturing method thereof |
| CN106221076A (en) * | 2016-08-30 | 2016-12-14 | 张家港市星泰防火保温材料有限公司 | A kind of sleeper and manufacture method thereof |
| CN106746905A (en) * | 2016-12-19 | 2017-05-31 | 清远市鑫叶新型装饰材料有限公司 | A kind of utilization waste print circuit board powder is the architectural decoration material of raw material |
| CN107090155A (en) * | 2017-06-27 | 2017-08-25 | 湖南师范大学 | A kind of method that utilization printed circuit board (PCB) non-metal powder strengthens wood plastic composite |
| CN116218067A (en) * | 2023-02-01 | 2023-06-06 | 盐城工学院 | Preparation method of circuit board nonmetal powder reinforced recycled polyethylene composite material |
| CN116574391A (en) * | 2023-04-14 | 2023-08-11 | 湖南映宏新材料股份有限公司 | Method for manufacturing wood-plastic composite material by using waste circuit board resin powder |
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