CN101724190B - Asbestos fiber reinforced thermoplastic base wood and plastic composite material and preparing method thereof - Google Patents

Asbestos fiber reinforced thermoplastic base wood and plastic composite material and preparing method thereof Download PDF

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Publication number
CN101724190B
CN101724190B CN2008101577519A CN200810157751A CN101724190B CN 101724190 B CN101724190 B CN 101724190B CN 2008101577519 A CN2008101577519 A CN 2008101577519A CN 200810157751 A CN200810157751 A CN 200810157751A CN 101724190 B CN101724190 B CN 101724190B
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China
Prior art keywords
wood
plastic composite
magnesium silicate
fibrous magnesium
mixing
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CN2008101577519A
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Chinese (zh)
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CN101724190A (en
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李秋义
郑玉春
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青岛理工大学
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04Particle-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885Screw or gear
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/582Recycling of unreacted starting or intermediate materials

Abstract

The invention belongs to the field of building material, in particular to a wood and plastic composite material, a preparing method and application thereof. The asbestos fiber reinforced thermoplastic base wood and plastic composite material is prepared from the following raw materials by weight percentage: 20%-45% of plastic, 30%-60% of wood powder, 5%-30% of asbestos fiber, 0.5%-3% of coupling agent, 0-2% of plastizer, 0-2% of stabilizer, and 0-4% of lubricant. The processed wood and plastic composite material has mechanical property higher than that of the wood and plastic material singly using the coupling agent, various mechanical property indexes being equal or exceeding that of the wood and plastic material simultaneously reinforced by using the coupling agent and the glass fiber, and cost greatly lower than that of the coupling agent and the glass fiber used at present, and can be widely applied to the fields of buildings, automobiles, transportation, aerospace and military; after discard, the product processed by the asbestos fiber reinforced thermoplastic base wood and plastic composite material can be used as a raw material to be reprocessed profiles through removing surface contaminants and crushing, therefore, the invention has the advantages of repetitive reutilization and wide popularization and application prospect.

Description

Fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material and preparation method thereof
Technical field
The invention belongs to building material field, relate to a kind of nano composite material, particularly a kind of wood plastic composite and preparation method thereof and application.
Background technology
Because the minimizing day by day of world's forest resourceies and petroleum resources, a kind of novel building and ornament materials-wood plastic composite begins to have obtained development fast in the nineties in 20th century.Wood plastic composite be a kind of mainly by xylon and plastics through the building material of extruding, technology Compound Machining such as hot pressing or injection form, its have waterproof, mothproof, characteristics such as can saw, can dig, and has the advantage that repeatedly to recycle, the substitute that is used as solid wood material or pure plastic material is widely used in indoor furniture, the park connects places such as chair, seashore wooden footway and villa fence, and progressively be applied to construction industry field in addition, as fields such as car industry, transport trade, air system and military projects.Crisis of resource has not only been alleviated in the appearance of wood plastic composite greatly, has also reduced because burning such as straw from village, straw and waste plastic abandon carelessly and has buried the environmental pollution that causes.But,, cause the mechanical performance index of wood plastic composite slightly inadequate because consistency is relatively poor between xylon and the plastics.When using as house decorative material, the performance of normal wood moulding material can satisfy service requirements substantially, but is not reach requirement far away for outdoor architecture with application such as template, aviation, military projects.In order to improve consistency and mechanical property, known possible technique scheme is to sneak into coupling agent in the wood plastic composite course of processing, or sneaks into glass fibre reinforcement simultaneously again.According to data record, be all in the wood powder mass percentage content under 35% the situation, sneak into 15% glass fibre after the gained wood plastic composite compare with the wood plastic composite that does not add glass fibre: flexural strength improves 21%; Modulus in flexure improves 40%; Shock strength improves 41%.Utilize and add coupling agent and glass fibre reinforcement, though improved the consistency between xylon and the plastics to a certain extent, improved the mechanical property of wood plastic composite, but some new problems have also been brought simultaneously, for example: (1) coupling agent price comparison costliness, though the mass percent of coupling agent in wooden plastomer is only accounts for 1%~3%, accounted for about 30% of total cost; (2) experiment shows, uses the reinforced effects of coupling agent limited merely, has only about 20%; When (3) using coupling agent, adopt glass fibre as strongthener, reinforced effects is better than independent use coupling agent enhanced effect, but the price of glass fibre is also somewhat expensive; (4) along with the rising steadily of the various industrial materials prices in home and abroad, the price of glass fibre and coupling agent also can improve constantly.
Summary of the invention
One of purpose of the present invention is to overcome above-mentioned defective, and a kind of low cost, high performance fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material are provided.
In the fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention each feed composition by mass percentage content be:
1) plastics: content is 20%~45%, can be at least a (comprising former raw material and reworked material) among PE, PP, PVC, PS, ABS and the PET;
2) wood powder: content is 30%~60%, at least a in wood, bamboo, cotton, the flaxen fiber powder;
3) fibrous magnesium silicate: content is 5%~30%, at least a in chrysotile asbestos fibre, amphibole asbestos fiber or the brucite asbestos fiber;
4) coupling agent: content is 0.5%~3%, is in titanate coupling agent, aluminate coupling agent, aluminium titanium composite coupler or the silane coupling agent any;
5) softening agent: content is 0~2%, is in dibutyl phthalate, dioctyl phthalate (DOP) or the dioctyl sebacate any;
6) stablizer: content is 0~2%, is in hindered amine light stabilizer or the UV light absorber any;
7) lubricant: content is 0~4%, is in Zinic stearas, ethylene bis-fatty acid amides, polyester wax, stearic acid, lead stearate, polyethylene wax, paraffin or the oxidized polyethlene wax any.
China is third place in the world big asbestos producing country, and wherein about 99% is chrysotile.Chrysotile is widely used in the modern industries such as building, machinery, oil, chemical industry, metallurgy, electric power, traffic and military project owing to have rub resistance, heat-resisting, anticorrosive, sound insulation and light weight and characteristics such as tensile strength is big.But should see, after the China joined WTO 385 kinds of products taked non-tariff control measures,, cause Russia and Central Asia's asbestos to pour in China, occupy 1/3rd the market share nearly comprising asbestos.The asbestos mine of China 80% concentrates on western side area, and living condition is arduous, and technical equipment is relatively backward, changes the line of production and reposition of personnel difficulty, and many enterprises have difficulty in taking a step under the impact of imported product.Therefore be necessary to base oneself upon China's national situation, put thinking of Policy in order, give the asbestos industry omnibearing support, help them to reform as early as possible, change a social system, Speeding Up The Advancement of technology is shone the competition vigor, continues as national economy and makes a due contribution.Fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention has adopted the chrysotile asbestos fibre that originates in Sichuan in the experimental phase, specification is internal diameter 6~8nm, external diameter 20~50nm, tensile strength is greater than 300MPa, obtained extraordinary reinforced effects, also opened a new way simultaneously for the application of homemade asbestos product.
Another object of the present invention is to provide the preparation method and the application of this fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material, comprises following three kinds of forms:
(1) extrusion moulding: comprise the steps
1) oven dry: with wood powder material heating, drying;
2) batch mixing: (add softening agent, lubricant and stablizer according to actual needs respectively by dropping into fibrous magnesium silicate, coupling agent, plastics and other processing aid materials in the wood powder of prescription requirement after oven dry, or only add among the three one or both), and mix, in case of necessity the mixing material behind the mixing is dried once more;
3) moulding: disposable extrusion moulding obtained fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material sheet material of the present invention or profiled material after the material after will being mixed added forcing machine; Perhaps, the back material that will be mixed adds forcing machine, carry out extruding pelletization, what obtain fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention mixes the moulding mixture grain, the material grain that will obtain again joins in the forcing machine, extrusion board or profiled material utilize water coolant that sheet material or profiled material are cooled off in above-mentioned extrusion.
(2) compression molding: comprise the steps
1) oven dry: with wood powder material heating, drying;
2) batch mixing: (add softening agent, lubricant and stablizer according to actual needs respectively by adding fibrous magnesium silicate, coupling agent, plastics and other processing aid materials in the wood powder of prescription requirement after oven dry, or only add among the three one or both), and mix, in case of necessity the mixing material behind the mixing is dried once more;
3) mixing: the mixing material after will drying carries out mixing in two roller mills, and sheet cools off under the material that mixes, and obtains the tablet of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention;
4) moulding: the fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material tablet that mixes is joined in the mould of vulcanizing press, carry out hot-forming, reach the scheduled time after, the cooling process of pressurizeing again obtains final section bar after the die sinking.
(3) injection molding: comprise the steps
1) oven dry: with wood powder material heating, drying;
2) batch mixing: (add softening agent, lubricant and stablizer according to actual needs respectively by dropping into fibrous magnesium silicate, coupling agent, plastics and other processing aid materials in the wood powder of prescription requirement after oven dry, or only add among the three one or both), and mix, in case of necessity the mixing material behind the mixing is dried once more;
3) moulding: will carry out injection molding in the material adding injector that mix; Perhaps, the back material that will be mixed adds forcing machine, carries out extruding pelletization, and what obtain fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention mixes the moulding mixture grain, and the material grain that will obtain again joins in the injector, outpours sheet material or profiled material.
It is pointed out that in the granulation process of extrusion moulding, the screw speed of forcing machine is made as 9~50rpm, prilling temperature should guarantee to be higher than all the time the fusing point of plastic raw materials.
In the compression molding process, specifically determine forming pressure and mold temperature according to the performance perameter of the plastic raw materials of selecting.Carry out in the mixing treating processes in two roller mills, melting temperature should guarantee to be higher than all the time the fusing point of plastic raw materials, and the mixing time was advisable with 7~10 minutes.And in the mixing process, constantly turn over to cut and play the triangle bag, so that mixing even with cutter.
In addition, when utilizing high-speed mixer to carry out batch mixing in the production process, for guaranteeing to mix fully, mixing time is not less than 3min usually, and mixture temperature is not less than 80 ℃.In the preparation process of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention, coupling agent mixes and comes into operation after Shi Kexian ratio in accordance with regulations is dissolved in ethanol solution or the acetone equal solvent again.What deserves to be mentioned is in some moulding processes, also can omit the operation of independent oven dry wood powder, the method for drying together again employing mixes all material by prescription after also can realize same effect.
Adding fibrous magnesium silicate with polypropylene, wood powder below is example, and fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention and preparation method thereof is once specified with application.In the experiment, each constituent mass percentage ratio of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material is as follows:
Polypropylene: 30%
Wood powder: 45%
Fibrous magnesium silicate: 15%
Coupling agent: 2%
Softening agent: 2%
Stablizer: 2%
Lubricant: 4%
Wherein, polypropylene can adopt former raw material, also can adopt reworked material, and reworked material cleans earlier, deoils after plastic waste need being collected, and carries out broken granulation with plastic breaker then, mixes with wood powder, fibrous magnesium silicate and other auxiliary agents again.Coupling agent adopts silane series, is dissolved in the ethanol solution in the ratio of 1:1 when mixing and uses.Wood powder can adopt fibrous, granular and sawdust etc., all moulding smoothly.Softening agent, stablizer, lubricant adopt conventional materials to get final product.The fibrous magnesium silicate specification that is adopted is internal diameter 6~8nm, external diameter 20~50nm, and tensile strength is greater than 300MPa, and the place of production is Sichuan.
In order to make wood powder and acrylic plastering blended more even, wood need be moulded with plastics and in high-speed mixer, mix about 5min, simultaneous temperature is not less than 80 ℃, and this is in order to make wood powder and other auxiliary agents and chrysotile asbestos fibre obtain better mixing.In extrusion moulding, in order to guarantee dispersed uniform, need and in high-speed mixer, in single screw extrusion machine, to carry out the granulation processing by mixed material, in twin screw extruder, carry out sheet material then or profiled material is extruded, the screw speed that twin screw is extruded is made as 9rpm, this be for cool off fully and exhaust abundant, also avoid inner bigger stress influence outward appearance and the reduction mechanical property of producing of sheet material simultaneously.About 2~4 ℃ of temperature when prilling temperature can be lower than extrusion board, but bulk temperature must not be lower than 170 ℃ of the fusing points of acrylic plastering; In compression molding, in order to guarantee dispersed uniform, need and will in high-speed mixer, in two roller mills, carry out mixing processing by mixed material, heat roller temperature must not be lower than 170 ℃ equally.In the mixing process, constantly turn over to cut with cutter and play the triangle bag, so that mixing even, mixing time is about 9~10min.In mold process, forming pressure and temperature are most important.Temperature is made as 180 ℃, and pressure is made as 10MPa, and this is in order to make plastics normally infiltration under high pressure, to be filled in more fully between the wood powder particle, making bond effect better.What deserves to be mentioned is that the waste material that is produced can be collected classification in the process of above-mentioned preparation fibrous magnesium silicate enhanced wood plastic composite, be used for extruding or mold pressing next time, thereby reach the saving resource, the purpose that further reduces production costs.
Every performance index that the fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material sheet material of making by this prescription of the present invention finally records are respectively: tensile strength 28.34MPa, flexural strength 42.31MPa, modulus in flexure 6134MPa, shock strength 0.425J/cm.And only adopt coupling agent, do not add fibrous magnesium silicate enhanced wood-plastic composite board, corresponding performance index value is respectively: tensile strength is 16.012MPa, flexural strength 34.08MPa, modulus in flexure 3482MPa, shock strength 0.24J/cm.If insert 15% glass fibre when adopting coupling agent, then the corresponding performance index of the wood-plastic composite board that obtains are respectively: tensile strength 26.5MPa, flexural strength 40.35MPa, modulus in flexure 5896MPa, shock strength 0.41J/cm.
Test-results proves that behind the adding fibrous magnesium silicate, the mechanical property of wood plastic composite system obviously improves.For example, the quality percentage composition that adds fibrous magnesium silicate is 15% o'clock, resulting wood plastic composite improves 24.3% than the flexural strength of the wood plastic composite that does not add the fibrous magnesium silicate strongthener under the equal conditions, and shock strength improves 40%, and tensile strength improves 42.3%; When the quality percentage composition of fibrous magnesium silicate is 20%, resulting wood plastic composite improves 40.4% than the flexural strength of the wood plastic composite that does not add the fibrous magnesium silicate strongthener under the equal conditions, tensile strength improves 130%, and shock strength improves 80.1%.
In summary, the Wood-plastic material that utilizes fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material preparation method of the present invention to process, its mechanical property is apparently higher than the Wood-plastic material of simple use coupling agent, and uses coupling agent to compare every mechanical performance index with glass fibre enhanced Wood-plastic material simultaneously also to have reached the level that maintains an equal level even exceed.Because the employed fibrous magnesium silicate of preparation method of the present invention is big at China's reserves, price is more much lower than present employed coupling agent and glass fibre, therefore, utilize fibrous magnesium silicate to come part to replace coupling agent and replacing whole glass fibre as strongthener, prepared wood plastic composite has had and has declined to a great extent remarkable in economical benefits obtaining under the prerequisite of equal mechanical property cost.
Fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention has good mechanical property, long service life, and the characteristics that cost is low have higher use value and dissemination than glass fibre enhanced wood plastic composite.The preparation method of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention, operation is reasonable, simple and easy to do, sheet material that processes according to the method or profiled material, can be widely used in construction industry, car industry, transport trade, air system and military industry field, the product that particularly utilizes fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material section bar of the present invention to process, after scrapping through removing surface contaminants and fragmentation, can be processed into section bar more again as raw material, it has the advantages that to recycle repeatedly, can save starting material in a large number, this is another huge contribution of the present invention, therefore has broad prospect for its application.
Embodiment
Embodiment one
With plastic quality degree in the wood plastic composite is 30% to be example, if adopt following prescription, each constituent mass degree is as follows:
Polypropylene: 30%
Wood powder: 45%
Fibrous magnesium silicate: 15%
Coupling agent: 2%
Softening agent: 2%
Stablizer: 2%
Lubricant: 4%
The preparation method of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention and extrusion moulding flow process comprise following concrete steps:
(1) 40~60 purpose wood powders is placed baking oven, dry 2h down at 105 ℃;
(2) it is even silane coupling agent and dehydrated alcohol to be pressed the mixed of 1:1, joins in the wood powder, mixes 2min in high-speed mixer, and temperature is decided to be 80 ℃.Chrysotile asbestos fibre joined mix 2min in the high-speed mixer.Lubricant, softening agent, stablizer and polypropylene material grain joined mix 4min in the high-speed mixer, discharging, at 105 ℃ of oven dry 2h down, stand-by;
(3) mixing material with oven dry in the step (2) carries out extruding pelletization in single screw extrusion machine, die head temperature is 175 ℃, the screw rod Heating Zone Temperature is followed successively by 192 ℃, 197 ℃, 192 ℃, screw speed is 40r/min, what obtain fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention mixes the type pellet, places 105 ℃ the dry 24h of baking oven then;
(4), promptly obtain the product of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention with prepared type pellet extrusion board or the profiled material in twin screw extruder of mixing of step (3).In the extrusion moulding process, die head temperature is 175 ℃, and extrusion pressure is 1.3 * 10 7Pa, the screw rod Heating Zone Temperature is followed successively by 192 ℃, 197 ℃, 192 ℃, and screw speed is 40r/min, and logical water coolant cools off.
In said process, because the existence of wood powder and fibrous magnesium silicate, make the volumetric expansion of compound, short texture, in order to guarantee the continuity of blanking, can adopt the method for hungry charging, avoid the extrusion blanking to interrupt, cause sheet material or the profiled material internal structure extruded loose, not fine and close, influence is used.In the twin screw extrusion, strict control die temperature, and logical water coolant cools off around the sheet material interface, thereby make each surface temperature unanimity of sheet material, avoid occurring the different situation of shrinking percentage, making influences situations such as sheet material or profiled material warpage and use attractive in appearance.
Embodiment two
With plastic quality degree in the wood plastic composite is 30% to be example, if adopt following prescription, each constituent mass degree is as follows:
Polypropylene: 30%
Wood powder: 45%
Fibrous magnesium silicate: 15%
Coupling agent: 2%
Softening agent: 2%
Stablizer: 2%
Lubricant: 4%
The preparation method of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention and compression molding flow process comprise following concrete steps:
(1) 40~60 purpose wood powders is placed baking oven, dry 2h down at 105 ℃;
(2) it is even silane coupling agent and dehydrated alcohol to be pressed the mixed of 1:1, joins in the wood powder, mixes 2min in high-speed mixer, and temperature is decided to be 80 ℃.Chrysotile asbestos fibre joined mix 2min in the high-speed mixer.Lubricant, softening agent, stablizer and polypropylene material grain joined mix 4min in the high-speed mixer, discharging, at 105 ℃ of oven dry 2h down, stand-by;
(3) roller with two roller mills is heated to preset temperature, after reaching specified temperature, roll spacing is transferred to 0.5mm, then the mixing material after the resulting oven dry of step (2) is rendered between two rollers, material after the plasticizing is cut off, treat all to transfer to suitable roll spacing after the plasticizing, making has suitable accumulation material between two rollers, left and right sides cutter turns refining, behind the 5-7min that plasticates, twice of thin-pass, the triangle bag is played in roll spacing below 0.5mm, treat that the material color and luster evenly and surperficial when glossy, can decontrol roll spacing to 1.5~1.8mm, following sheet cools off, and promptly obtains the tablet of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention.
(4) draft molding technique parameter, heat bolster, and mould is carried out preheating; Put into the tablet that mixes that step (3) obtains (please note intersect place by the calendering direction) in the mould preheating; Mould will be placed on the central authorities of hot plate, set warm up time according to thickness of test piece and prescription needs, after the test piece preheating fully, matched moulds and exhaust 1-3 time, be heated to specified pressure, pressurize 5min takes out mould and puts into cold drawing pressurization cooling below 20min to 80 ℃, and die sinking promptly obtains the final molding product of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention.
In said process, the dwell time will be strict controlled in 5min, if the time is too short, then polypropylene can not be penetrated in wood powder and the fiber fully, causes local plastic to concentrate, and the other part then lacks plastics, make that sheet material inside is inhomogeneous, directly have influence on result of use; If overlong time, then wood powder and plastics then can be owing to burn overheated the decomposition, influence attractive in appearance even can't use.
Embodiment three
With plastic quality degree in the wood plastic composite is 30% to be example, if adopt following prescription, each constituent mass degree is as follows:
Polypropylene: 30%
Wood powder: 45%
Fibrous magnesium silicate: 15%
Coupling agent: 2%
Softening agent: 2%
Stablizer: 2%
Lubricant: 4%
The preparation method of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention and injection molding flow process comprise following concrete steps:
(1) 40~60 purpose wood powders is placed baking oven, dry 2h down at 105 ℃;
(2) it is even silane coupling agent and dehydrated alcohol to be pressed the mixed of 1:1, joins in the wood powder, mixes 2min in high-speed mixer, and temperature is decided to be 80 ℃.Chrysotile asbestos fibre joined mix 2min in the high-speed mixer.Lubricant, softening agent, stablizer and polypropylene material grain joined mix 4min in the high-speed mixer, discharging, at 105 ℃ of oven dry 2h down, stand-by;
(3) adding of the mixing material after the oven dry that step (2) is obtained has been finished in the injector of preheating, the injector screw speed is set at 40rpm, extruder temperature is set at 149 ℃, 171 ℃, 210 ℃ and 229 ℃, die temperature is set at 40 ℃, 60 ℃ and 80 ℃ respectively, injection forms sheet material or profiled material, promptly obtains the product of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material of the present invention.
The present invention utilizes fibrous magnesium silicate can significantly strengthen the mechanical property of wood plastic composite, prolonged the work-ing life of wood plastic composite, its mechanical property is apparently higher than not adding fibrous magnesium silicate enhanced normal wood plastic composite materials, and it is very nearly the same even better with glass fibre enhanced wood plastic composite performance, but because the fibrous magnesium silicate reserves are big, therefore its price has higher use value and dissemination well below glass fibre than glass fibre.
It is pointed out that at this and set forth content of the present invention by above-mentioned example, is for a better understanding of the present invention, but content of the present invention not only is confined to above-mentioned example, and example should not regarded limitation of the invention as.For example, the kind of wood powder (poplar, pine; bamboo powder, fiber crops etc.), the kind of plastics can be among PP, PE, PVC, PS, ABS, the PET any or several; so long as based on the technical scheme and the application of the present invention's spirit, all within protection scope of the present invention.

Claims (8)

1. fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material, it is characterized in that its each feed composition and by mass percentage content be:
1) plastics: content is 20%~45%, is at least a among PE, PP, PVC, PS, ABS and the PET;
2) wood powder: content is 30%~60%, at least a in wood, bamboo, cotton, the flaxen fiber powder;
3) fibrous magnesium silicate: content is 5%~30%, at least a in chrysotile asbestos fibre, amphibole asbestos fiber or the brucite asbestos fiber;
4) coupling agent: content is 0.5%~3%, is in titanate coupling agent, aluminate coupling agent, aluminium titanium composite coupler or the silane coupling agent any;
5) softening agent: content is 0~2%, is in dibutyl phthalate, dioctyl phthalate (DOP) or the dioctyl sebacate any;
6) stablizer: content is 0~2%, is in hindered amine light stabilizer or the UV light absorber any;
7) lubricant: content is 0~4%, is in Zinic stearas, ethylene bis-fatty acid amides, polyester wax, stearic acid, lead stearate, polyethylene wax, paraffin or the oxidized polyethlene wax any.
2. fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material according to claim 1 is characterized in that the fibrous magnesium silicate specification is internal diameter 6~8nm, external diameter 20~50nm.
3. the preparation method of a fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material according to claim 1 is characterized in that the preparation of wood plastic composite and utilizes the mode of extrusion moulding that the process that wood plastic composite is processed into section bar is comprised following steps:
1) oven dry: with wood powder material heating, drying;
2) batch mixing: by dropping into fibrous magnesium silicate, coupling agent, plastics and other processing aid materials in the prescription wood powder of requirements after oven dry, and mix, choose wantonly the mixing material behind the mixing is dried once more;
3) moulding: disposable extrusion moulding obtained fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material sheet material or profiled material after the material after will being mixed added forcing machine; Perhaps, mixing material after the oven dry is added forcing machine, carry out extruding pelletization, what obtain fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material mixes the moulding mixture grain, the material grain that will obtain again joins in the forcing machine, extrusion board or profiled material utilize water coolant that sheet material or profiled material are cooled off in above-mentioned extrusion.
4. the preparation method of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material according to claim 3 is characterized in that in the extrusion that the screw speed of forcing machine is made as 9~50rpm, and prilling temperature should guarantee to be higher than all the time the fusing point of plastic raw materials.
5. the preparation method of a fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material according to claim 1 is characterized in that the preparation of wood plastic composite tablet and utilizes the mode of compression molding that the process that the wood plastic composite tablet is processed into section bar is comprised following steps:
1) oven dry: with wood powder material heating, drying;
2) batch mixing: by dropping into fibrous magnesium silicate, coupling agent, plastics and other processing aid materials in the prescription wood powder of requirements after oven dry, and mix, choose wantonly the mixing material behind the mixing is dried once more;
3) mixing: the mixing material after will drying carries out mixing in two roller mills, and sheet cools off under the material that mixes, and obtains the tablet of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material;
4) moulding: the fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material tablet that mixes is joined in the mould of vulcanizing press, carry out hot-forming, reach the scheduled time after, the cooling process of pressurizeing again obtains final section bar after the die sinking.
6. the preparation method of fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material according to claim 5, it is characterized in that in two roller mills, carrying out in the mixing treating processes, melting temperature should guarantee to be higher than all the time the fusing point of plastic raw materials, mixing time 7~10min.
7. the preparation method of a fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material according to claim 1 is characterized in that the process of utilizing injection molding mode to obtain the wood plastic composite section bar comprises following steps:
1) oven dry: with wood powder material heating, drying;
2) batch mixing: by dropping into fibrous magnesium silicate, coupling agent, plastics and other processing aid materials in the prescription wood powder of requirements after oven dry, and mix, choose wantonly the mixing material behind the mixing is dried once more;
3) moulding: will carry out injection molding in the material adding injector that mix; Perhaps, the material after being mixed is added forcing machine, carry out extruding pelletization, what obtain fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite material mixes the moulding mixture grain, and the material grain that will obtain again joins in the injector, outpours sheet material or profiled material.
8. according to the preparation method of claim 3,5 or 7 described fibrous magnesium silicate enhanced thermoplastic base wood and plastic composite materials, when it is characterized in that utilizing high-speed mixer to carry out batch mixing, mixing time is not less than 3min, and mixture temperature is not less than 80 ℃.
CN2008101577519A 2008-10-14 2008-10-14 Asbestos fiber reinforced thermoplastic base wood and plastic composite material and preparing method thereof CN101724190B (en)

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CN106009181A (en) * 2016-06-30 2016-10-12 芜湖三刀材料科技有限公司 Wood-plastic composite for sleeper and preparation method thereof
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CN106479208A (en) * 2016-11-08 2017-03-08 佛山市炬业科技有限公司 A kind of material for making high intensity door-plate and preparation method thereof
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1432605A (en) * 2002-01-14 2003-07-30 常怀春 Composition for producing synthetic timber and its prepn process
JP3747258B2 (en) * 2002-09-26 2006-02-22 広島県 Method for producing thermoplastic resin composite material containing FRP recycle
CN1858102A (en) * 2006-05-24 2006-11-08 威海市广通塑胶制品有限公司 Plastic-wood building formwork and its producing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1432605A (en) * 2002-01-14 2003-07-30 常怀春 Composition for producing synthetic timber and its prepn process
JP3747258B2 (en) * 2002-09-26 2006-02-22 広島県 Method for producing thermoplastic resin composite material containing FRP recycle
CN1858102A (en) * 2006-05-24 2006-11-08 威海市广通塑胶制品有限公司 Plastic-wood building formwork and its producing method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特许第3747258号B2 2005.12.09

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