CN1328312C - Plant fibre-polypropylene composite material and preparation thereof - Google Patents
Plant fibre-polypropylene composite material and preparation thereof Download PDFInfo
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- CN1328312C CN1328312C CNB2004100285017A CN200410028501A CN1328312C CN 1328312 C CN1328312 C CN 1328312C CN B2004100285017 A CNB2004100285017 A CN B2004100285017A CN 200410028501 A CN200410028501 A CN 200410028501A CN 1328312 C CN1328312 C CN 1328312C
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- polypropylene
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- vegetable fibre
- mineral filler
- maleic anhydride
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Abstract
The present invention provides a plant fibre polypropylene composite material and a process for producing same. The raw material components (parts by weight ) of the composite material comprises 50-80 parts of plant fibre, 18-50 parts of polypropylene, 1-10 parts of inorganic filler, 1-10 parts branched maleic anhydride, 1010:0.1-2 parts of anti-oxidant and 3-10 parts of other addition agents. The preparation method comprises the following steps: putting the prepared raw materials of each component in solid condition into a high speed mixing machine, thorough mixing them homogeneously, adding them into a charging barrel of a double-screw extruder, melting and blending them at a temperature controlled at 175-200 DEG C, extruding them through the mould port, shaping them through water cooling, dragging them and cutting them with a certain length, then the final product is worked out. In accordance with the present invention, by considerably improving the proportionality of plant fibre, the material cost of said composite materials is greatly reduced, and the unnecessary granulation working procedure further reduces the fabricating cost. The regulation of the proportioning of plant fibre and polypropylene is capable of satisfying requirements of materials with different usages.
Description
Technical field
The present invention relates to a kind of polymer composite, particularly a kind of is the matrix material that main raw material is made with plant straw fiber and polypropylene, and the one-step moulding method of extruding that adopts (be polypropylene with straw fiber powder etc. mixes then directly carry out forming process) preparation technology's method, belong to field of high polymer material processing.
Background technology
Usually, make wood plastic composite, mostly use more low-melting polyethylene (PE) and wood fibre, shortcoming is its insufficient strength height of polyethylene kind wood plastic composite of being produced, and thermal distorsion temperature is lower.Produce high-intensity polypropylene wood plastic composite materials, external existing production, still be in the secret stage but its special formula and complete processing thereof be all not quite alike, do not see disclosed Recipe at home as yet, so domestic enterprise mostly can't produce the qualified section bar of high-intensity vegetable fibre.
The density of polypropylene (PP) is little, comprehensive mechanical property is good, nontoxic, water-absorbent is low, the heat-drawn wire height, and have good chemical stability and electrical insulating property, and have higher mechanical strength, its cost is lower in addition, thereby has obtained widespread use in fields such as automobile, household electrical appliances, chemical industry, building and packings.Global PP annual production has surpassed 1,000 ten thousand tons, is only second to polyethylene, polyvinyl chloride and occupy the 3rd of general-purpose plastics.Simultaneously, PP also has its poor toughness, poor dimensional stability and shortcoming such as easily aging, has limited its range of application.Usually conventional employing of prior art added cheap mineral filler (as lime carbonate, talcum powder etc.) to increase its dimensional stability, thermal distorsion temperature and rigidity, add oxidation inhibitor and add various fibers (fiber dusts of glass fibre, wood fibre or farm crop) to improve its toughness and the breach and the shock proof intensity of non-notch that improve matrix material to improve easy aged defective in its life-time service process, to adopt.
Vegetable fibre particularly the stalk fibre powder as a kind of organic filler of plastics, have wide material sources, be worth cheap, many other mineral fillers such as density is low, good insulating incomparable good property with.But it is not used widely as mineral filler, and major cause is: the one, and the consistency of it and matrix resin is relatively poor, and the 2nd, dispersion effect is poor in the fused thermoplastics, causes mobile and extrusion moulding processing difficulties.Because wherein major ingredient is a Mierocrystalline cellulose, contains a large amount of hydroxyls, these hydroxyls form intermolecular hydrogen bonding or intramolecular hydrogen bond, make it have very strong polarity.And the thermoplastics majority is nonpolar, has hydrophobicity, so consistency between the two is relatively poor, the bonding force at interface is very little, need be by using additive to improve the avidity at interface between them, make raw mix under the control of pressure and temperature, be transformed into the reticulin fiber material of polymer state together, thereby reach the effect that strengthens wood plastic composite intensity with low molecular relatively additive.
At present, by the retrieval Chinese patent literature, prior art related to the present invention such as notification number are the disclosed Chinese patent of CN1445285A, name is called " its purposes of a kind of modified composite material of woods and plastics and manufacture method thereof ", open day be: on October 1st, 2003, this invention utilizes wood powder and plastics or waste or used plastics to be main raw material, be equipped with a little auxiliary, connect the skill agent with special use wood powder and frosting are carried out the graft modification processing, adopt continuous expressing technique, extrude and produce various high performance composite.Wherein the wood powder component content surpasses 50%, and this invention is handled by the grafting of wood powder and frosting.
Be after the stalk after the pulverization process is handled with surface treatment agent, to mix with the plastics heating and melting again, be pressed into sheet material with press then or with forcing machine or injection moulding machine straight forming.
Recently according to report, Sichuan University works out " straw/plastic composite plate of material material (SPCD) ", its patent of invention notification number is the disclosed Chinese patent of CN1281875A by retrieval, open day be: January 31 calendar year 2001, it is a kind of novel substitute of timber, and its main raw material is various straws and plastics (can contain part or all of recovery plastics).Straw content can be regulated arbitrarily at 50-80 in the matrix material, and product cost is low, the intensity height.Though the present invention has similar part with it, its method still is to use hot press forming technology, and its used plastics mostly are polyethylene or polyolefins compound, therefore with technology of the present invention and prescription bigger difference is arranged.
(application number is: on basis CN200310103938.8) in original application in the present invention, in prescription, removed polyoxyethylene glycol, add the ethylene-propylene diene copolymer or the high density polyethylene(HDPE) auxiliary ingredients that strengthen the low temperature notched resistance to impact shock of matrix material of the present invention, further improved performance of composites of the present invention.
Produce composite material with high-load vegetable fibre and polypropylene, its difficulty is to adjust suitable prescription, be not higher than in melt temperature under 200 ℃ the condition (temperature too high easily make straw fiber charing or decomposition), make the batch mixing fusion and can extrude up-to-standard section bar, be not that part is easy to problem, need adjust each components contents repeatedly, with series of technical such as the flowability that changes melt, consistencies.
Summary of the invention
The object of the present invention is to provide the prescription of a kind of vegetable fibre and polypropylene composite material, and utilize existing twin screw extruder direct production to go out the processing method of all kinds of section bars of vegetable fibre polypropylene composite material cheaply.
Purpose of the present invention can reach by following measure: it is to be matrix with vegetable fibre and polypropylene that technology constitutes, with mineral filler (talcum powder or Paris white) as weighting agent, with maleic anhydride as stalk fibre and polypropylene interfacial compatibilizer, its component and proportioning are as follows by weight: vegetable fibre: 50～80, polypropylene: 20～50, mineral filler: 1～10, grafted maleic anhydride: 1～10, antioxidant 1010: 0.1～2, other auxiliary agents: 3～10, wherein said other auxiliary agents are ethylene-propylene diene copolymer or high density polyethylene(HDPE).
Purpose of the present invention can also reach by the measure of following optimization, and its component and proportioning are as follows by weight: vegetable fibre: 65, and polypropylene: 25, mineral filler: 3, ethylene-propylene diene copolymer: 3, grafted maleic anhydride: 4.6, antioxidant 1010: 0.4.
Purpose of the present invention can also reach by the measure of following optimization, and its component and proportioning are as follows by weight: vegetable fibre: 65, and polypropylene: 25, mineral filler: 3, high density polyethylene(HDPE): 5, grafted maleic anhydride: 4.6, antioxidant 1010: 0.4.
Wherein said mineral filler is a kind of in talcum powder, lime carbonate, the wollastonite or their composition, and its granularity is 600～800 purpose powders.Grafted maleic anhydride is maleic anhydride and polyacrylic grafts PP-g-MAH.Described vegetable fibre is one or more the composition in cotton bar, straw, straw, rice husk, reed rod, wood sawdust, the weed tree sawdust, and to be ground into granularity be 60～200 purpose powders.
The preparation method of vegetable fibre polypropylene composite material of the present invention is by weight with plant fiber powder 50～80, polypropylene powder 20～50, mineral filler 1～10, other auxiliary agents: 3～10, grafted maleic anhydride 1～10, antioxidant 1010: 0.1～2, each component raw material that above-mentioned outfit is good adds the twin screw extruder barrel again after placing the high-speed mixer thorough mixing evenly under the solid-state state, under 175～200 ℃ of temperature controls, carry out melt blending, extrude through the mould mouth again, finalize the design through water cooling, again through traction, fixed length cutting just can be produced finished product.
Wherein said other auxiliary agents are ethylene-propylene diene copolymer or high density polyethylene(HDPE).
The present invention compared with prior art has following advantage: the ratio that has improved vegetable fibre greatly, make the raw materials cost of this matrix material greatly reduce, make production cost reduce,, can satisfy the widespread demand of different purposes matrix materials by adjusting vegetable fibre and polyacrylic proportioning.
Embodiment
Provide several embodiments of the present invention below.In following each embodiment, each component is shared weight part meter in vegetable fibre polypropylene composite material blend of the present invention.
Embodiment 1:
Cotton stalk fiber: 65
Polypropylene: 25
Talcum powder: 3
Ethylene-propylene diene copolymer: 3
Grafted maleic anhydride: 4.6
Antioxidant 1010: 0.4
The preparation method of the vegetable fibre polypropylene composite material of the foregoing description 2, be after placing the high-speed mixer thorough mixing evenly under the solid-state state, to add the twin screw extruder barrel again with being equipped with each good component raw material, under 175～200 ℃ of temperature controls, carry out melt blending, extrude through the mould mouth again, finalize the design through water cooling, through traction, fixed length cutting, just can produce finished product again.
Test data is as follows:
| Test event | Unit | Test result | Testing method |
| Sinuousness | mm | 1.4 | With reference to GB/T8814-1998 |
| Drop impact (1kg, 1m, 23 ℃) | Destroy number | 0/10 | With reference to GB/T8814-1998 |
| Heating back size changing rate (70 ℃, 1h) | ％ | -1.3 | With reference to GB/T8814-1998 |
| Oxygen index | ％ | 34 | With reference to GB/T2406-1993 |
| The simple beam unnotched impact strength | kJ/m 3 | 8.12 | With reference to GB/T1043-1992 |
| Flexural strength | MPa | 30.4 | With reference to GB/T9341-2003 |
| Shore hardness (D) | / | 73.5 | With reference to GB/T2411-1980 |
| Water-intake rate | ％ | 1.30 | With reference to GB/T1034-1998 |
Embodiment 2:
Straw fiber: 70
Polypropylene: 22
Paris white: 3
High density polyethylene(HDPE): 5
Grafted maleic anhydride: 2.8
Antioxidant 1010: 0.2
The preparation method of the vegetable fibre polypropylene composite material of the foregoing description 2, be after placing the high-speed mixer thorough mixing evenly under the solid-state state, to add the twin screw extruder barrel again with being equipped with each good component raw material, under 175～200 ℃ of temperature controls, carry out melt blending, extrude through the mould mouth again, finalize the design through water cooling, through traction, fixed length cutting, just can produce finished product again.
Test data is as follows:
| Test event | Unit | Test result | Testing method |
| Sinuousness | mm | 1.3 | With reference to GB/T8814-1998 |
| Drop impact (1kg, 1m, 23 ℃) | Destroy number | 0/10 | With reference to GB/T8814-1998 |
| Heating back size changing rate (70 ℃, 1h) | ％ | -1.3 | With reference to GB/T8814-1998 |
| Oxygen index | ％ | 34 | With reference to GB/T2406-1993 |
| The simple beam unnotched impact strength | kJ/m 3 | 7.14 | With reference to GB/T1043-1992 |
| Flexural strength | MPa | 32.1 | With reference to GB/T9341-2003 |
| Shore hardness (D) | / | 76.3 | With reference to GB/T2411-1980 |
| Water-intake rate | ％ | 1.32 | With reference to GB/T1034-1998 |
Claims (9)
1, a kind of vegetable fibre polypropylene composite material is characterized in that described matrix material comprises that following component and proportioning weight part are:
Vegetable fibre: 50～80
Polypropylene: 20～50
Mineral filler: 1～10
Grafted maleic anhydride: 1～10
Antioxidant 1010: 0.1～2
Other auxiliary agents: 3～10,
Wherein said other auxiliary agents are ethylene-propylene diene copolymer or high density polyethylene(HDPE).
2, matrix material as claimed in claim 1 is characterized in that the proportioning weight part of component is:
Vegetable fibre: 65
Polypropylene: 25
Mineral filler: 3
Ethylene-propylene diene copolymer: 3
Grafted maleic anhydride: 4.6
Antioxidant 1010: 0.4.
3, matrix material as claimed in claim 1 is characterized in that the proportioning weight part of component is:
Vegetable fibre: 65
Polypropylene: 25
Mineral filler: 3
High density polyethylene(HDPE): 5
Grafted maleic anhydride: 4.6
Antioxidant 1010: 0.4.
4, matrix material as claimed in claim 1 is characterized in that mineral filler is one or more the composition in talcum powder, Paris white, the wollastonite.
5,, it is characterized in that mineral filler is granularity 600～800 purpose powders as claim 1 or 2 or 3 described matrix materials.
6,, it is characterized in that vegetable fibre is one or more the composition in cotton bar, straw, straw, rice husk, reed rod, wood sawdust, the weed tree sawdust as claim 1 or 2 or 3 described matrix materials.
7, matrix material as claimed in claim 6 is characterized in that it is 60～200 purpose powders that vegetable fibre is ground into granularity.
8, the preparation method of vegetable fibre polypropylene composite material as claimed in claim 1, it is characterized in that: place the high-speed mixer thorough mixing even plant fiber powder 50～80, polypropylene powder 20～50, mineral filler 1～10, other auxiliary agents 3～10, grafted maleic anhydride 1～10, antioxidant 1010 0.1～2 by weight, under 175～200 ℃ of temperature, carrying out melt blending on the twin screw extruder then, extrude through the mould mouth again, finalize the design through water cooling, through traction, fixed length cutting, just can produce finished product again.
9, the preparation method of matrix material as claimed in claim 8 is characterized in that: wherein said other auxiliary agents are ethylene-propylene diene copolymer or high density polyethylene(HDPE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100285017A CN1328312C (en) | 2003-11-03 | 2004-03-04 | Plant fibre-polypropylene composite material and preparation thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200310103938.8 | 2003-11-03 | ||
| CN200310103938 | 2003-11-03 | ||
| CNB2004100285017A CN1328312C (en) | 2003-11-03 | 2004-03-04 | Plant fibre-polypropylene composite material and preparation thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1613904A CN1613904A (en) | 2005-05-11 |
| CN1328312C true CN1328312C (en) | 2007-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100285017A Expired - Fee Related CN1328312C (en) | 2003-11-03 | 2004-03-04 | Plant fibre-polypropylene composite material and preparation thereof |
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| Country | Link |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100948371B1 (en) * | 2009-10-21 | 2010-03-22 | 유희룡 | Reed composite, composite manufacturing method and building composite using the same |
| CN102558613A (en) * | 2010-12-28 | 2012-07-11 | 上海杰事杰新材料(集团)股份有限公司 | Method for preparing natural plant cellulose reinforced thermoplastic composite material |
| CN103788488A (en) * | 2014-01-24 | 2014-05-14 | 南通红石科技发展有限公司 | Polypropylene composite material and preparation method thereof |
| CN107652533A (en) * | 2016-07-26 | 2018-02-02 | 四川鑫达企业集团有限公司 | A kind of string filled modified polypropylene composite and preparation method thereof |
| CN107938171B (en) * | 2017-12-25 | 2020-11-10 | 北京安信乐布医疗用品有限公司 | Elastic composite non-woven fabric and production process thereof |
| FR3082846B1 (en) * | 2018-06-22 | 2021-09-24 | Faurecia Interieur Ind | COMPOSITION BASED ON NATURAL FIBERS AND HOMOPOLYMER PULVERULENT POLYPROPYLENE |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121940A (en) * | 1994-10-26 | 1996-05-08 | 陈玉章 | Wood plastics composite |
| EP0933191A1 (en) * | 1998-01-29 | 1999-08-04 | Plastic Omnium Auto Interieur | Article based on vegetable fibers, suitable for the manufacture of vehicle parts |
| CN1277975A (en) * | 2000-07-20 | 2000-12-27 | 华东理工大学 | PP composite material reinfored by mica and glass fiber felt, and prepn. method and use thereof |
| CN1281875A (en) * | 1999-07-23 | 2001-01-31 | 四川大学 | Production method of straw and plastic composite material |
| CN1292398A (en) * | 2000-10-19 | 2001-04-25 | 丁澎 | Wood flour filled PVC product |
| JP2001179716A (en) * | 1999-12-22 | 2001-07-03 | Kasai Kogyo Co Ltd | Thermoforming fiber board |
| CN1315463A (en) * | 2000-03-30 | 2001-10-03 | 上海杰事杰新材料股份有限公司 | Composite resin/fibre material and its preparing process |
| US6322737B1 (en) * | 1999-03-26 | 2001-11-27 | Curtis D. Beyer | Structural member and structure containing the same |
| CN1445285A (en) * | 2002-03-14 | 2003-10-01 | 北新建材(集团)有限公司 | Modified composite material of woods and plastics as well as its usage and manufacturing method |
-
2004
- 2004-03-04 CN CNB2004100285017A patent/CN1328312C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121940A (en) * | 1994-10-26 | 1996-05-08 | 陈玉章 | Wood plastics composite |
| EP0933191A1 (en) * | 1998-01-29 | 1999-08-04 | Plastic Omnium Auto Interieur | Article based on vegetable fibers, suitable for the manufacture of vehicle parts |
| US6322737B1 (en) * | 1999-03-26 | 2001-11-27 | Curtis D. Beyer | Structural member and structure containing the same |
| CN1281875A (en) * | 1999-07-23 | 2001-01-31 | 四川大学 | Production method of straw and plastic composite material |
| JP2001179716A (en) * | 1999-12-22 | 2001-07-03 | Kasai Kogyo Co Ltd | Thermoforming fiber board |
| CN1315463A (en) * | 2000-03-30 | 2001-10-03 | 上海杰事杰新材料股份有限公司 | Composite resin/fibre material and its preparing process |
| CN1277975A (en) * | 2000-07-20 | 2000-12-27 | 华东理工大学 | PP composite material reinfored by mica and glass fiber felt, and prepn. method and use thereof |
| CN1292398A (en) * | 2000-10-19 | 2001-04-25 | 丁澎 | Wood flour filled PVC product |
| CN1445285A (en) * | 2002-03-14 | 2003-10-01 | 北新建材(集团)有限公司 | Modified composite material of woods and plastics as well as its usage and manufacturing method |
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| Publication number | Publication date |
|---|---|
| CN1613904A (en) | 2005-05-11 |
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