CN105153721A - Formula of short carbon fiber reinforced wood-plastic composite material - Google Patents
Formula of short carbon fiber reinforced wood-plastic composite material Download PDFInfo
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- CN105153721A CN105153721A CN201510385295.3A CN201510385295A CN105153721A CN 105153721 A CN105153721 A CN 105153721A CN 201510385295 A CN201510385295 A CN 201510385295A CN 105153721 A CN105153721 A CN 105153721A
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Abstract
The present invention relates to the technical field of wood-plastic composite materials, particularly to a short carbon fiber reinforced wood-plastic composite material. The short carbon fiber reinforced wood-plastic composite material disclosed by the invention comprises, by weight, 30-50 parts of polyolefin plastic, 6-20 parts of short carbon fiber, 1-4 parts of a compatilizer, 0.5-1.5 parts of a lubricant, and 50-60 parts of wood flour. The composite material has significantly improved physical and mechanical properties, the preparation method is simple, and the composite material can be recycled. The invention solves the problem of insufficient strength of wood-plastic composite materials in some application occasions, and expands the application scope of wood-plastic composite materials.
Description
Technical field
The present invention relates to wood plastic composite of a kind of chopped carbon fiber enhancing and preparation method thereof.
Background technology
Wood plastic composite has been a kind of commercially produced product and has defined relevant manufacturing industry, and current wood plastic composite is mainly used in packaging industry, building trade, carplane accessory continuous for other emerging fields.But wood plastic composite own physical mechanical property on the low side become limit its application a short slab, and the overall performance of wood plastic composite also has the possibility continuing to improve, therefore prepare the very necessary of a kind of high-performance wood-plastic composite material, be directly connected to the profound of wood plastic composite industry and develop.
Add a kind of method that reinforcement is effective reinforced composite performance, chopped carbon fiber is a kind of strongthener that matrix material is conventional, and himself physical and mechanical property is very high.It is at the early-stage and do not occur the mature technology that can apply that current employing chopped carbon fiber strengthens the correlative study of wood plastic composite.Also there is a lot of problem in prior art, as current preparation method is comparatively loaded down with trivial details, generally need carry out surface modification treatment to chopped carbon fiber, the compatible problem in the interface in addition between chopped carbon fiber and plastic substrate is also unresolved.The invention discloses a kind of preparation method adding chopped carbon fiber in wood plastic composite preparation process, technique is simple, and reinforced effects is obvious.
Summary of the invention
The present invention will solve the deficiency of wood plastic composite mechanical property, proposes to adopt chopped carbon fiber to strengthen wood plastic composite, and provides one relatively simple preparation method.
The wood plastic composite that a kind of chopped carbon fiber of the present invention strengthens is prepared from by 30 ~ 50 parts of polyolefin plasticss, 6 ~ 20 parts of chopped carbon fibers, 0.5 ~ 1.5 part of lubricant, 1 ~ 4 part of compatilizer and 50 ~ 60 parts of wood powders by mass fraction.
The wood plastic composite that the chopped carbon fiber prepared by the present invention is strengthened, tensile strength improves 15% ~ 30%, and flexural strength improves 18% ~ 40%, and shock strength improves 10% ~ 20%.
Embodiment
Embodiment one: the wood plastic composite that a kind of chopped carbon fiber of present embodiment strengthens is prepared from by 30 ~ 50 parts of polyolefin plasticss, 6 ~ 20 parts of chopped carbon fibers, 1 ~ 4 part of compatilizer, 0.5 ~ 1.5 part of lubricant and 50 ~ 60 parts of wood powders by mass fraction.
The wood plastic composite that the chopped carbon fiber prepared by present embodiment is strengthened, tensile strength improves 15% ~ 30%, and flexural strength improves 18% ~ 40%, and shock strength improves 10% ~ 20%.
Embodiment two: present embodiment and embodiment one unlike: described polyolefine is the one in polyethylene, polypropylene; Described chopped carbon fiber length is 2 ~ 10mm, is that the industrial long carbon fiber of PAN base cuts acquisition through cutter.Other is identical with embodiment one.
Embodiment three: one of present embodiment and embodiment one or two unlike: described compatilizer is the one in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene; Described lubricant is the one in paraffin, polyethylene wax, Poly Propylene Wax; Described wood mesh is 20 ~ 120 orders.Other is identical with embodiment one or two.
Embodiment four: the preparation method of the wood plastic composite that a kind of chopped carbon fiber described in present embodiment strengthens, carry out according to the following steps:
One, take: take 30 ~ 50 parts of polyolefin plasticss, 6 ~ 20 parts of chopped carbon fibers, 1 ~ 4 part of compatilizer, 0.5 ~ 1.5 part of lubricant and 50 ~ 60 parts of wood powders by mass fraction;
Two, 30 ~ 50 parts of polyolefin plasticss step one taken, 6 ~ 20 parts of chopped carbon fibers, 1 ~ 4 part of compatilizer, 0.5 ~ 1.5 part of lubricant and 50 ~ 60 parts of wood powders are even in high-speed mixer and mixing, mixing velocity 1400 ~ 3000r/min, mixing time is 15 ~ 30min, then forcing machine granulation is passed through with compound, prilling temperature is 150 DEG C ~ 210 DEG C, obtains wood and moulds pellet;
Three, wood is moulded pellet and carry out forming process, namely obtain the wood plastic composite that chopped carbon fiber strengthens.
Forcing machine described in present embodiment step 2 is single screw extrusion machine or twin screw extruder.
The wood plastic composite that the chopped carbon fiber prepared by present embodiment is strengthened, tensile strength improves 15% ~ 30%, and flexural strength improves 18% ~ 40%, and shock strength improves 10% ~ 20%.
Embodiment five: present embodiment and embodiment four unlike: the polyolefine described in step one is the one in polyethylene, polypropylene; Chopped carbon fiber length described in step one is 2 ~ 10mm, is that the industrial long carbon fiber of PAN base cuts acquisition through cutter; Compatilizer described in step one is the one in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene; In step one, lubricant is the one in paraffin, polyethylene wax, Poly Propylene Wax; Wood mesh described in step one is 20 ~ 120 orders.Other is identical with embodiment four.
Embodiment six: one of present embodiment and embodiment four or five unlike: the forming process described in step 3 is extrusion moulding or compression molding.Other is identical with embodiment four or five.
Embodiment seven: one of present embodiment and embodiment four to six unlike: when described forming process is extrusion moulding, extrusion temperature is 140 DEG C ~ 200 DEG C, and die temperature is 140 DEG C ~ 200 DEG C; When described forming process is compression molding, molding temperature is 150 DEG C ~ 200 DEG C, and molding pressure is 1.5MPa ~ 7.0MPa, sizing after cooling.Other is identical with embodiment four to six.
Extrusion moulding described in present embodiment uses single screw extrusion machine or twin screw extruder.
Following examples are adopted to verify beneficial effect of the present invention:
Embodiment one:
The preparation method of the wood plastic composite that a kind of chopped carbon fiber described in the present embodiment strengthens, specifically carries out according to following steps:
One, take: take 35 parts of polyolefin plasticss, 10 parts of chopped carbon fibers, 4 parts of compatilizers, 1 part of lubricant and 50 parts of wood powders by mass fraction;
Two, 35 parts of polyolefin plasticss step one taken, 10 parts of chopped carbon fibers, 1 part of lubricant, 4 parts of compatilizers and 50 parts of wood powders are even in high-speed mixer and mixing, mixing velocity 1400 ~ 3000r/min, mixing time is 15 ~ 30min, then compound twin screw extruder is carried out granulation, prilling temperature one to seven district is 157 DEG C, 165 DEG C, 165 DEG C, 170 DEG C, 172 DEG C, 167 DEG C and 160 DEG C respectively, screw speed is 30r/min, obtains wood and moulds pellet;
Three, wood is moulded pellet and carry out forming process, namely obtain the wood plastic composite that chopped carbon fiber strengthens.
Polyolefine described in step one is high density polyethylene(HDPE): trade mark 2200J, Daqing petrochemical;
Chopped carbon fiber described in step one is that acquisition cut by long carbon fiber cutter, and length is 4mm, model UTS50, diameter 7.0 μm, Japanese Dong Bang company;
Compatilizer described in step one is maleic anhydride grafted polyethylene, and percentage of grafting is 1wt%, melting index >=50g/10min, Rizhisheng New Technology Development Co., Ltd., Shanghai;
Lubricant described in step one is polyethylene wax, commercially available;
Wood powder described in step one is Poplar Powder, order number 40 ~ 80 order, water ratio≤3%.
Forming process described in step 3 is single screw extrusion machine extrusion moulding, and setting a district to four district's temperature is 142 DEG C, 157 DEG C, 160 DEG C and 164 DEG C respectively, and die temperature 165 DEG C, screw speed is 8r/min.
Embodiment two: present embodiment and embodiment one unlike: take 35 parts of polyolefin plasticss, 12 parts of chopped carbon fibers, 4 parts of compatilizers, 1 part of lubricant and 50 parts of wood powders by mass fraction in step one; Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one unlike: take 35 parts of polyolefin plasticss, 8 parts of chopped carbon fibers, 4 parts of compatilizers, 1 part of lubricant and 50 parts of wood powders by mass fraction in step one; Other is identical with embodiment one.
Embodiment four: present embodiment and embodiment one unlike: the chopped carbon fiber length described in step one is 6mm.Other is identical with embodiment one.
Simultaneous test: the simultaneous test of embodiment one to four, present embodiment and embodiment one unlike: take 35 parts of polyolefin plasticss, 4 parts of compatilizers, 1 part of lubricant and 60 parts of wood powders by mass fraction in step one.Other is identical with embodiment one.
Static mechanical property test is carried out to wood plastic composite prepared by wood plastic composite and the simultaneous test of chopped carbon fiber enhancing prepared by embodiment one to four, stretches, bending and shock strength test result is as shown in table 1.
Table 1: the wood plastic composite mechanical experimental results that chopped carbon fiber strengthens
| Test event | Tensile strength (MPa) | Flexural strength (MPa) | Shock strength (MPa) |
| Testing method | ASTM-D 638-03 | ASTM-D790 | GB/T1043-93 |
| Embodiment one | 51.69±1.28 | 83.95±1.04 | 14.20±1.02 |
| Embodiment two | 53.72±0.56 | 85.20±0.54 | 13.73±1.08 |
| Embodiment three | 48.83±1.08 | 81.56±1.10 | 12.29±0.48 |
| Embodiment four | 52.08±0.69 | 81.65±0.72 | 13.16±1.02 |
| Simultaneous test | 43.14±1.22 | 61.14±1.12 | 11.03±0.51 |
As seen from table embodiment one to three and simultaneous test all under same test conditions granulation extrude, when the chopped carbon fiber that 4mm is long adds 8 parts, 10 parts, 12 parts respectively, the wood plastic composite tensile strength that chopped carbon fiber strengthens improves 13.18%, 19.81%, 24.5% respectively; Flexural strength improves 33.33%, 37.30%, 39.35% respectively; Shock strength improves 11.42%, 28.73%, 24.27% respectively; Embodiment one and implement four with simultaneous test all under same test conditions granulation extrude, when chopped carbon fiber addition is 10 parts but length is respectively 4mm and 6mm, the wood plastic composite tensile strength that chopped carbon fiber strengthens improves 19.81%, 20.72% respectively; Flexural strength improves 37.30%, 33.54% respectively; Shock strength improves 28.73%, 19.31% respectively.Add chopped carbon fiber as known from the above and can strengthen wood plastic composite, the addition of chopped carbon fiber and staple length to reinforced effects have the staple length of certain influence and chopped carbon fiber should moderate unsuitable long also should not the too short and addition of chopped carbon fiber be 10 parts and 12 parts time chopped carbon fiber enhancing the overall mechanics better performances of wood plastic composite.
Claims (3)
1. a wood plastic composite for chopped carbon fiber enhancing, is characterized in that the wood plastic composite that a kind of chopped carbon fiber strengthens is prepared from by 30 ~ 50 parts of polyolefin plasticss, 6 ~ 20 parts of chopped carbon fibers, 1 ~ 4 part of compatilizer, 0.5 ~ 1.5 part of lubricant and 50 ~ 60 parts of wood powders by massfraction.
2. the wood plastic composite of a kind of chopped carbon fiber enhancing according to claim 1, is characterized in that described polyolefine is the one in polyethylene, polypropylene; Described chopped carbon fiber length is 2 ~ 10mm, is that the industrial long carbon fiber of PAN base cuts acquisition through cutter.
3. compatilizer according to claim 1 is the one in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene; Described lubricant is the one in paraffin, polyethylene wax, Poly Propylene Wax; Described wood mesh is 20 ~ 120 orders.
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| CN201510385295.3A CN105153721A (en) | 2015-06-30 | 2015-06-30 | Formula of short carbon fiber reinforced wood-plastic composite material |
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| CN201510385295.3A CN105153721A (en) | 2015-06-30 | 2015-06-30 | Formula of short carbon fiber reinforced wood-plastic composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065105A (en) * | 2016-07-21 | 2016-11-02 | 芜湖昊轩环保新材料有限公司 | A kind of High-strength wood-plastic composite panel and preparation method thereof |
| CN106243758A (en) * | 2016-08-02 | 2016-12-21 | 合肥文武信息技术有限公司 | A kind of computer desk Wood-plastic material and preparation method thereof |
| WO2018195908A1 (en) * | 2017-04-28 | 2018-11-01 | 云南中乾集成房屋有限公司 | Wood-plastic composite material having enhanced mechanical and weather-resistance properties, and method for fabrication thereof |
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| CN101967271A (en) * | 2010-10-20 | 2011-02-09 | 中国工程物理研究院化工材料研究所 | Short carbon fiber reinforced antistatic polylactic composite material and preparation method thereof |
| KR20130108736A (en) * | 2012-03-26 | 2013-10-07 | (주)엘지하우시스 | Reinforced wood polymer/plastic composite and manufacturing method thereof |
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Patent Citations (4)
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| CN101967271A (en) * | 2010-10-20 | 2011-02-09 | 中国工程物理研究院化工材料研究所 | Short carbon fiber reinforced antistatic polylactic composite material and preparation method thereof |
| KR20130108736A (en) * | 2012-03-26 | 2013-10-07 | (주)엘지하우시스 | Reinforced wood polymer/plastic composite and manufacturing method thereof |
| CN103387706A (en) * | 2013-08-19 | 2013-11-13 | 南京林业大学 | Preparation method of carbon fiber reinforced carbon powder/ultra-high molecular weight polyethylene composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065105A (en) * | 2016-07-21 | 2016-11-02 | 芜湖昊轩环保新材料有限公司 | A kind of High-strength wood-plastic composite panel and preparation method thereof |
| CN106243758A (en) * | 2016-08-02 | 2016-12-21 | 合肥文武信息技术有限公司 | A kind of computer desk Wood-plastic material and preparation method thereof |
| WO2018195908A1 (en) * | 2017-04-28 | 2018-11-01 | 云南中乾集成房屋有限公司 | Wood-plastic composite material having enhanced mechanical and weather-resistance properties, and method for fabrication thereof |
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Application publication date: 20151216 |