CN103435882B - Thermoplastic wood-plastic composite and production method thereof - Google Patents

Thermoplastic wood-plastic composite and production method thereof Download PDF

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CN103435882B
CN103435882B CN201310279688.7A CN201310279688A CN103435882B CN 103435882 B CN103435882 B CN 103435882B CN 201310279688 A CN201310279688 A CN 201310279688A CN 103435882 B CN103435882 B CN 103435882B
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ash
plastic composite
wood
lime
vegetable fibre
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CN201310279688.7A
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CN103435882A (en
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陶磊明
张岩丰
郑兴才
程宇婷
方章建
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中盈长江国际新能源投资有限公司
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00Compositions of lignin-containing materials
    • C08L97/02Lignocellulosic material, e.g. wood, straw or bagasse
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/045Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/06Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/12Polypropene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06Homopolymers or copolymers of vinyl chloride

Abstract

The invention discloses a kind of thermoplastic wood-plastic composite and production method thereof, component and the weight percent thereof of this material are as follows: vegetable fibre 20 ~ 70%; Plastics 20 ~ 70%; Biomass electric power plant lime-ash or bio-oil factory lime-ash 5 ~ 25%; Auxiliary agent 1 ~ 10%.This production method comprises: 1) vegetable fibre pre-treatment; 2) vegetable fibre modification: with biomass electric power plant lime-ash solution, bio-oil factory lime-ash solution, and one or more in coupling agent carry out modification to plant fibre surface; 3) mix: by modified vegetable fibre, plastic pellet, biomass electric power plant lime-ash or bio-oil factory lime-ash, and auxiliary agent mixes by proportioning; 4) granulation: mixture is fused at 110 ~ 180 DEG C the rear extruding pelletization of plasticizing; 5) hot-forming: by hot-forming for pellet obtained thermoplastic wood-plastic composite.While present invention achieves the resource utilization of waste, obtain a kind of mechanical property and the good wood plastic composite of weathering resistance.

Description

Thermoplastic wood-plastic composite and production method thereof
Technical field
The present invention relates to polymer composite, refer to a kind of thermoplastic wood-plastic composite and production method thereof particularly.
Background technology
Along with industrial expansion; a large amount of waste or used plastics and discarded powder ash pollution on the environment more and more serious; biomass ash and waste or used plastics are called " black and white rubbish " by people; not only have a strong impact on the quality of life of people; and constrain the development of national economy; therefore, how to fully utilize waste or used plastics, biomass power plant ash and bio-oil factory lime-ash, making it turn waste into wealth becomes one of important problem of environment protection.
In addition, along with global resources are increasingly exhausted, the raising of social environment consciousness, in recent years propose requirements at the higher level to timber and petroleum chemicals both at home and abroad, in this context, thermoplastic wood-plastic composite arises at the historic moment, thermoplastic wood-plastic composite is a class advanced composite material, refer to utilize polyethylene, polypropylene and polyvinyl chloride etc. to replace common resin adhesive to mix with useless vegetable fibre, then through plastic processings such as extruding, mold pressing, injection moldings, the sheet material produced or section bar.Thermoplastic wood-plastic composite overcomes that strength of wood is low, variability is large and the organic materials Young's modulus use limitation caused such as low, have both the advantage of timber and plastics, compared with wood materials, its water-intake rate is low, not easily strain cracking, there is comparatively high-mechanical property, can be used for automobile, building materials, furniture, and the industry such as logistics packaging, market application foreground is extensive.But, thermoplastic wood-plastic composite often needs to bear higher impact load in environment for use and transportation, and humidity, temperature, illumination, and the environmental factors such as bacterium can cause certain influence to the physicals of material and mechanical property, therefore, the mechanical property and the weathering resistance that how to improve constantly thermoplastic wood-plastic composite just become problem demanding prompt solution in thermoplastic wood-plastic composite evolution.
Summary of the invention
Object of the present invention will provide a kind of thermoplastic wood-plastic composite and production method thereof exactly, while realizing changing rejected material to useful resource, makes this thermoplastic wood-plastic composite have good mechanical property and weathering resistance.
For achieving the above object, the technical solution used in the present invention is: a kind of thermoplastic wood-plastic composite, and component and the weight percent thereof of this material are as follows:
Further, the weight percent of described each component is as follows:
Further, the weight percent of described each component is as follows:
Further, the weight ratio of described vegetable fibre and described plastics is 9:10.
Further, the main component of described biomass electric power plant lime-ash or bio-oil factory lime-ash is silicate, calcium salt, and the compound of potassium, and its granularity is 1000 ~ 5000 orders, and length-to-diameter ratio is 3 ~ 6.Described biomass electric power plant lime-ash or bio-oil factory lime-ash are used as auxiliary stopping composition.   
Further, described vegetable fibre is wood powder, rice husk, straw powder, and forestry three remains the combination of one or more arbitrary proportions in thing powder.Vegetable fibre for improving the toughness of material, stretchiness and tear resistance; Vegetable fibre content is too low, then toughness reduces, vegetable fibre too high levels, then plasticity is deteriorated, and easily blocks and can not extrude in Material Manufacturing Process.
Further, described plastics are waste and old polyethylene, polypropylene, and the combination of one or more arbitrary proportions in polyvinyl chloride.Plastics as matrix, for improving the thermoplasticity of matrix material.
Further, described auxiliary agent is coupling agent, whipping agent, initiator, antioxidant, tinting material, fire retardant, stablizer, mould inhibitor, and one or more in lubricant.In the production process of matrix material, the auxiliary agent of appropriate amount can be added as required.
The production method of above-mentioned thermoplastic wood-plastic composite, comprises the following steps:
1) pre-treatment of vegetable fibre: being pulverized by vegetable fibre and sieving out granularity is carry out drying to it after 80 ~ 300 object particles, makes the water ratio < 5% of vegetable fibre;
2) modification of vegetable fibre: be the bio-oil factory lime-ash solution of 3 ~ 7% by biomass electric power plant lime-ash solution, mass concentration that mass concentration is 3 ~ 7%, and one or more accounting in the coupling agent of vegetable fibre weight 0.5% ~ 3% carry out modification to plant fibre surface;
3) mix: by modified vegetable fibre, plastic pellet, biomass electric power plant lime-ash or bio-oil factory lime-ash, and auxiliary agent mixes by described proportioning, for subsequent use;
4) granulation: mixture is fully fused the rear extruding pelletization of plasticizing at 110 ~ 180 DEG C;
5) hot-forming: the hot-forming mode of the pellet after extruding pelletization is obtained thermoplastic wood-plastic composite.
Wherein, biomass electric power plant lime-ash solution or bio-oil factory lime-ash solution combine with coupling agent treatment, and effect is more effective than individual curing.
Described step 2) in, described coupling agent is titanic acid ester, stearic acid, paraffin, isocyanic ester, and the combination of one or more arbitrary proportions in grafted polyethylene joined by toxilic acid.Carry out modification with coupling agent to plant fibre surface, mould interface compatibility and mixing uniformity to improve wood, coupling agent consumption can not be too many, the superfluous tensile property of material and the shock resistance of making on the contrary declines, certainly, measure then not exclusively coated very little, affect treatment effect; The several functions such as wherein, titanic acid ester itself is coupling agent, is also dispersion agent, lubricant, tackiness agent, linking agent, and catalyzer also has concurrently antirust, anti-oxidant and fire-retardant.
In described step 4), first adopt double-screw plastic extrusion machine to carry out fusion plasticizing, temperature is set as 110 ~ 170 DEG C, and then adopts single screw extrusion machine extruding pelletization, and it is 115 ~ 180 DEG C that singe screw head temperature controls, and control extrusion pressure is 7 ~ 12MPa.In expressing technique control, carry out setting each barrel district temperature value according to the temperature range that melting Sum decomposition temperature and the vegetable fibre of waste or used plastics can bear, the temperature setting of twin screw extruder from 110 ~ 170 DEG C, and keeps it constant in whole production process; The temperature of singe screw head controls in 115 ~ 180 DEG C of temperature ranges, and keeps higher melt pressure.In addition, for preventing temperature too high, occur that fiber burns phenomenon, the setting of the temperature of different plastics also has certain difference, and when preferred twin screw extruder selects PE, temperature is preferably set to 110 ~ 120 DEG C, PP preferably 140 ~ 150 DEG C, PVC preferably 150 ~ 170 DEG C; When single screw extrusion machine selects PE, temperature is preferably set to 115 ~ 125 DEG C, and PP is 170 ~ 180 DEG C, and PVC is 165 ~ 178 DEG C.Meanwhile, temperature is adjusted in time depending on the practical problems occurred in extrusion, screw speed, rate of feeding, the main technologic parameters such as pulling speed.
In described step 1), the vegetable fibre granularity after crushing and screening is 80 ~ 120 orders.
Compared with existing Wood-plastic material, tool of the present invention has the following advantages:
One, the present invention is with polyethylene (PE), polypropylene (PP), or the waste or used plastics such as polyvinyl chloride (PVC) is matrix resin, with wood powder, rice husk, or the waste plant fiber such as stalk is filler, with biomass electric power plant lime-ash or bio-oil factory lime-ash for thermoplastic wood-plastic composite is produced in auxiliary packing, biomass electric power plant lime-ash or the special grain pattern of bio-oil factory lime-ash and particle size range, become the fabulous auxiliary stopping composition of wood plastic composite, match with vegetable fibre stopping composition, together improve the toughness of material.
Its two, the solution of biomass electric power plant lime-ash or bio-oil factory lime-ash is basic solution, as the properties-correcting agent of vegetable fibre, to Mierocrystalline cellulose alkalinisation treatment, can be conducive to vegetable fibre modification; And can the impurity small molecules in vegetable fibre be dissolved, the low molecule impurity such as part pectin, xylogen and hemicellulose in vegetable fibre are made to be dissolved removing, make plant fibre surface become coarse, binding ability between vegetable fibre and plastic pellet interface is strengthened; Can open the hydrogen bond of plant fibre surface, make fiber surface become loose, form many cavitys, these cavitys strengthen " locking force " of polymeric matrix and plant fiber stuffing; In this basic solution, existing polar ion has non-polar ionic again, action of coupling agents can be played to the combination of polarity vegetable fibre and non-polar polymer parent, the thermoplastic wood-plastic composite that final production is gone out has good resistance to compression, bending resistance, mechanical property and the physicals such as shock-resistant, and there is good water tolerance, not easily damaged by worms, not easily long fungi, acid and alkali-resistance and erosion resistance are strong, long service life.
Its three, biomass electric power plant lime-ash includes silicon and calcium, can play the effect of strengthening agent and lubricant; Bio-oil factory lime-ash, containing saturated fatty alkyl hydrocarbon, can improve the heat storing and heat preserving function of material; Biomass electric power plant lime-ash has vesicular structure, can adsorb obnoxious flavour, and then the wood plastic composite produced is nontoxic, pollution-free, radiationless, can 100% reclaiming, meets environmental requirement.
Its four, the present invention with waste or used plastics particle as matrix resin, by proportioning reasonable in design, the thermoplastic wood-plastic composite operability produced being is strong, can saw, dig, follow closely, produce all size product as required, the local damage of product can be keeped in repair and be reproduced.
They are five years old, the present invention utilizes vegetable fibre, waste or used plastics, biomass electric power plant lime-ash or bio-oil factory these inexpensive raw material of lime-ash, by selecting reasonable component proportion and adding related auxiliaries, produce a kind of reversibility recycle high-quality for wood section, realize changing rejected material to useful resource and while obtaining distinct economic, also significantly decrease the environmental pollution that waste brings, improve the added value of Wood-plastic material.
They are six years old, in production method of the present invention, except utilizing aforementioned base solution and coupling agent, modification is carried out to plant fibre surface, effectively improving wood moulds outside interface compatibility and mixing uniformity, also in expressing technique control, according to feedstock property Optimizing Process Parameters, avoid and burn phenomenon and block phenomenon.
Accompanying drawing explanation
Fig. 1 is a kind of Production Flow Chart schematic diagram of thermoplastic wood-plastic composite.
Fig. 2 is the stereoscan photograph of bio-oil factory lime-ash.
Fig. 3 is the stereoscan photograph of biomass cinder of electric power plant.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated, but the present invention is not limited to following embodiment.
A kind of production process of thermoplastic wood-plastic composite generally as shown in Figure 1, first by waste wood, pulverize by the vegetable fibre such as rice husk or stalk pulverizer, and carry out drying with power plant's steam waste heat and make its water ratio < 5%; Then add properties-correcting agent and surface modification treatment is carried out to vegetable fibre, and by proportioning by modified vegetable fibre, biomass electric power plant lime-ash or bio-oil factory lime-ash, plastic pellet (PE, PP, PVC), and appropriate auxiliary agent is put into mixing machine and is mixed; Then, with twin screw extruder and single screw extrusion machine extruder grain, forcing machine processing heat energy also can utilize biomass electric power plant steam waste heat; Obtain section bar finally by mould molding, wrapped product completes whole production process.
Wherein, the main component of biomass electric power plant lime-ash or bio-oil factory lime-ash is silicate, calcium salt, and the compound of potassium, its granularity is 1000 ~ 5000 orders, length-to-diameter ratio is 3 ~ 6, usual length-to-diameter ratio is about 5, and as shown in Figure 2, the pattern of biomass electric power plant lime-ash and structure are as shown in Figure 3 for the pattern of bio-oil factory lime-ash and structure.
Embodiment 1
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: wood powder 70%, PE20%, biomass electric power plant lime-ash 9%, auxiliary agent 1%.
Concrete production process is as follows:
1) pre-treatment is carried out to wood powder
80 object wood powders are sifted out with standard sieve after pulverizing with pulverizer, then constant temperature blower kiln successive drying 4 ~ 7 hours are put in, drying temperature controls at 105 DEG C, in drying process, timing is weighed to wood powder, until terminate drying when twice weighing results is substantially equal, it is for subsequent use that taking-up wood powder is placed in sealing bag.
2) modification is carried out to wood powder
A, alkaline solution treatment wood powder: with mass concentration be the biomass power plant ash solution of 4% as soak solution, consumption is advisable with just submergence wood powder, and soak time is 48 hours, then to be washed by wood powder in suction filtration after neutral with water and dries;
B, with titanic acid ester process wood powder: dry 5 hours of constant temperature blower kiln wood powder being put into 105 DEG C, dried wood powder is put into high-speed mixer stir, temperature is elevated to 90 DEG C, take the titanic acid ester accounting for wood powder weight 0.5% and put into high mixer, when temperature is elevated to 100 DEG C of releasings, cool for subsequent use.
3) by the biomass electric power plant lime-ash (KD-1) after 5h dry at 105 DEG C and modified wood powder, PE particle, and the auxiliary agent such as antioxidant and fire retardant mixes with the rotating speed of 1200 r/min by putting into mixing machine together with proportioning.
4) compound is put into parallel double-screw extruder and carry out plasticizing granulation, and then enter single screw extrusion machine and extrude, pellet is mixed homogenizing in forcing machine.In expressing technique control, according to the melting Sum decomposition temperature of PE, and the temperature range that wood powder can bear carries out setting each barrel district temperature value, and the temperature of twin screw extruder is set as 115 DEG C, and keeps constant in whole production process; The temperature of singe screw head controls, in 120 DEG C of temperature ranges, to maintain higher melt pressure, and the particular problem simultaneously depending on occurring in extrusion suitably can adjust the processing parameter of equipment.
5) by shaping by the geometrical shape of mold component for the pellet extruded, the finished product are produced.
After testing, the ultimate compression strength of this product reaches 30MPa, and flexural strength reaches 20MPa, and composite bending modulus reaches 500MPa, and elongation at break is 150%, oxygen index >25, and use temperature is-10 DEG C ~ 85 DEG C, mechanical property and weathering resistance excellent.
Embodiment 2
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: rice husk 45%, PP 45%, biomass electric power plant lime-ash (KD-1) 5%, auxiliary agent 5%.
Concrete production process is as follows:
1) sieving out granularity after being pulverized by rice husk is that 100 object pellets put into sweating room drying, dry 4h at 105 DEG C;
2) the aminopropyl triethoxysilane coupling agent (KH550) accounting for rice husk weight 2% is mixed with the ratio of ethanol in 1:1, join in rice husk, in high-speed mixer, mix 30min;
3) by above-mentioned modified rice husk, biomass electric power plant lime-ash (KD-1), PP, and the auxiliary agent such as initiator and tinting material joins in high-speed mixer by proportioning and mixes 10min discharging, and at 105 DEG C dry 4h;
4) compound is put into parallel double-screw extruder and carry out plasticizing granulation, then compound is carried out extruding pelletization in single screw extrusion machine, single screw extrusion machine die head temperature is 160 DEG C, screw rod Heating Zone Temperature is followed successively by 170 DEG C, 175 DEG C, 170 DEG C, screw speed is 40r/min, and logical water coolant cools;
5) by shaping by the geometrical shape of mold component for the pellet extruded, the finished product are produced.
In above process, due to the existence of rice husk and biomass power plant ash (KD-1), make the volumetric expansion of compound, short texture, in order to ensure the continuity of blanking, the mode increasing feeding quantity can be adopted to avoid sheet material or unlike material internal defect in extrusion to affect compactness; In moulding process, strictly will control die temperature, and logical cooling water ring winding board material interface cools, thus make each surface temperature of sheet material consistent, avoid occurring the different situation of shrinking percentage, make the situation such as sheet material or different in nature material warpage, impact use and attractive in appearance.
Product ultimate compression strength reaches 25MPa, and flexural strength reaches 20MPa, and composite bending modulus reaches 500MPa, and elongation at break is 150%, oxygen index >25, use temperature-10 DEG C ~ 85 DEG C, mechanical property and weathering resistance excellent.
Embodiment 3
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: straw powder 20%, PVC 70%, bio-oil factory lime-ash (KD-2) 8%, auxiliary agent 2%.
Concrete production process is as follows:
1) sieving out crushed stalk go out granularity is 80 object powders, then straw powder is put into loft drier, dry 2h at 105 DEG C;
2) maleic anhydride inoculated polypropylene and titanate coupling agent that account for straw powder weight 3% are joined in straw powder, in high-speed mixer, stir 15min with 80 DEG C, carry out modification;
3) by modified straw powder, bio oil factory lime-ash (KD-2), the auxiliary agent such as PVC and white carbon black, joins in high-speed mixer by proportioning and mixes, at 60 DEG C, stir 30min;
4) use twin screw extruder at 170 DEG C of obtained pellets;
5) the mechanics batten product of matrix material is prepared with injection moulding machine.
Product ultimate compression strength reaches 25MPa, and flexural strength reaches 18MPa, and composite bending modulus reaches 600MPa, and elongation at break is 150%, oxygen index >25, use temperature-10 DEG C ~ 85 DEG C, mechanical property and weather resistance excellent.
Embodiment 4
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: straw powder and the forestry three of 60% remain thing powder, PVC and PP of 30%, bio-oil factory lime-ash (KD-2) of 5%, auxiliary agent 5%.
Concrete production process is as follows:
1) stalk and forestry three being remained thing grinding, to make granularity be carry out drying after 120 object powder, makes its water ratio < 5%;
2) straw powder after oven dry and forestry three are remained thing powder and put into the stirring of high mixer high speed, when temperature reaches 90 DEG C, take the isocyanic ester accounting for powder weight 1.5%, be evenly sprayed onto in powder with watering can with after the alcohol dilution of 95%, release when temperature is elevated to 100 DEG C, dry for standby;
3) by modified material powder, bio oil factory lime-ash (KD-2), PVC and PP, and the auxiliary agent such as lubricant, join in high-speed mixer by proportioning and mix, stir 30min at 60 DEG C;
4) compound is put into twin screw extruder and carry out plasticizing granulation, then compound is carried out mixing extrusion with 170 DEG C in single screw extrusion machine, extrusion pressure controls at 7 ~ 12MPa, flour milling pelletizing after extruded stock cooling;
5) pellet extruded is produced the finished product by hot-forming mode.
The ultimate compression strength of product reaches 40MPa, and flexural strength reaches 18MPa, and composite bending modulus reaches 400MPa, elongation at break 150%, oxygen index >25, use temperature-10 DEG C ~ 85 DEG C, mechanical property and weather resistance excellent.
Embodiment 5
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: straw powder 20%, PVC 50%, biomass electric power plant lime-ash (KD-1) 25%, auxiliary agent 5%.
Concrete production process is as follows:
1) crushed stalk being sieved out granularity is 300 object powders, then straw powder is put into loft drier, dry 2h at 105 DEG C;
2) with mass concentration be the bio-oil factory ash solution of 5% as soak solution, consumption is advisable with just submergence straw powder, and soak time is 48 hours, then straw powder to be washed in suction filtration after neutral with water and dries;
And by titanic acid ester, stearic acid, paraffin co-treatment straw powder: straw powder is placed on high-temperature stirring in high mixer, adds the titanic acid ester accounting for straw powder weight 0.8% when temperature reaches 90 DEG C, stearic acid and paraffin, mix releasing in about 10 minutes, cool for subsequent use.
3) by modified straw powder, biomass electric power plant lime-ash (KD-1), PVC, and the auxiliary agent such as mould inhibitor and fire retardant, join in high-speed mixer by proportioning and mix, at 60 DEG C, stir 30min;
4) pellet is obtained with twin screw extruder and single screw extrusion machine;
5) shaping matrix material is produced with injection moulding machine.
Product ultimate compression strength reaches 40MPa, and flexural strength reaches 19MPa, and composite bending modulus reaches 450MPa, and elongation at break is 150%, oxygen index >25, use temperature-10 DEG C ~ 85 DEG C, mechanical property and weather resistance excellent.
Embodiment 6
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: wood powder 50%, PP 30%, biomass electric power plant lime-ash (KD-1) 10%, auxiliary agent 10%.
Concrete production process is as follows:
1) pre-treatment is carried out to wood powder
2) modification is carried out to wood powder
Alkaline solution treatment wood powder: with mass concentration be the biomass power plant ash solution of 7% as soak solution, consumption is advisable with just submergence wood powder, and soak time is 48 hours, then to be washed by wood powder in suction filtration after neutral with water and dries;
3) by dried biomass electric power plant lime-ash (KD-1) and modified wood powder, PP particle, and the auxiliary agent such as tinting material and stablizer mixes by putting into mixing machine together with proportioning.
4) compound is put into parallel double-screw extruder and carry out plasticizing granulation, and then enter single screw extrusion machine and extrude, pellet is mixed homogenizing in forcing machine.
5) by shaping by the geometrical shape of mold component for the pellet extruded, the finished product are produced.
After testing, the ultimate compression strength of this product reaches 35MPa, and flexural strength reaches 20MPa, and composite bending modulus reaches 500MPa, and elongation at break is 150%, oxygen index >25, and use temperature is-10 DEG C ~ 85 DEG C, mechanical property and weathering resistance excellent.
Embodiment 7
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: wood powder 65%, PE25%, biomass electric power plant lime-ash (KD-1) 5%, auxiliary agent 5%.
Concrete production process is as follows:
1) pre-treatment is carried out to wood powder
2) modification is carried out to wood powder
A, alkaline solution treatment wood powder: with mass concentration be the biomass power plant ash solution of 3% as soak solution, consumption is advisable with just submergence wood powder, and soak time is 48 hours, then to be washed by wood powder in suction filtration after neutral with water and dries;
B, again with maleic anhydride grafted polyethylene process wood powder: the maleic anhydride grafted polyethylene accounting for wood powder weight 1.2% is directly joined in the compound of wood powder and PE particle, stirs in mixing machine for subsequent use.
3) by dried biomass electric power plant lime-ash (KD-1) and modified wood powder, PE particle, and the auxiliary agent such as mould inhibitor and lubricant mixes by putting into mixing machine together with proportioning.
4) compound is put into parallel double-screw extruder and carry out plasticizing granulation, and then enter single screw extrusion machine and extrude, pellet is mixed homogenizing in forcing machine.
5) by shaping by the geometrical shape of mold component for the pellet extruded, the finished product are produced.
After testing, the ultimate compression strength of this product reaches 40MPa, and flexural strength reaches 19MPa, and composite bending modulus reaches 600MPa, and elongation at break is 150%, oxygen index >25, and use temperature is-10 DEG C ~ 85 DEG C, mechanical property and weathering resistance excellent.
Embodiment 8
Component and the weight percentage thereof of thermoplastic wood-plastic composite are as follows: wood powder and rice husk 36%, PE, PP, and PVC40%, biomass electric power plant lime-ash (KD-1) 20%, auxiliary agent 4%.
Concrete production process is as follows:
1) pre-treatment is carried out to wood powder and rice husk
2) modification is carried out to wood powder and powdered rice hulls
Alkaline solution treatment wood powder and powdered rice hulls: with mass concentration be the bio-oil factory ash solution of 5% as soak solution, consumption is advisable with just submergence wood powder and powdered rice hulls, and soak time is 48 hours, then wood powder and powdered rice hulls to be washed in suction filtration after neutral with water and dries;
3) by dried biomass electric power plant lime-ash (KD-1) and modified wood powder and rice husk, PE, PP, and PVC particle, and whipping agent, the auxiliary agents such as initiator and lubricant mix by putting into mixing machine together with proportioning.
4) compound is put into parallel double-screw extruder and carry out plasticizing granulation, and then enter single screw extrusion machine and extrude, pellet is mixed homogenizing in forcing machine.
5) by shaping by the geometrical shape of mold component for the pellet extruded, the finished product are produced.
After testing, the ultimate compression strength of this product reaches 35MPa, and flexural strength reaches 20MPa, and composite bending modulus reaches 600MPa, and elongation at break is 150%, oxygen index >25, and use temperature is-10 DEG C ~ 85 DEG C, mechanical property and weathering resistance excellent.
The thermoplastic wood-plastic composite good mechanical properties that the present invention produces, not easily strain cracking, mechanical property is high, and water-intake rate is low, can substitute log, the use such as plastics and aluminium alloy in a lot of field; From raw materials for production, the raw material of thermoplastic wood-plastic composite adopts the residuum of various waste or used plastics, waste wood and farm crop, reduces plastic refuse and agricultural wastes burn the environmental pollution brought; The production of thermoplastic wood-plastic composite and use, can not distribute the volatile matter of harm humans health by environment towards periphery, material itself goes back recoverable, is a kind of ecological clean wood plastic composite.

Claims (10)

1. a thermoplastic wood-plastic composite, is characterized in that: component and the weight percent thereof of this material are as follows:
The main component of described biomass electric power plant lime-ash or bio-oil factory lime-ash is silicate, calcium salt, and the compound of potassium, and its granularity is 1000 ~ 5000 orders, and length-to-diameter ratio is 3 ~ 6;
Described plastics are waste and old polyethylene, polypropylene, and the combination of one or more arbitrary proportions in polyvinyl chloride.
2. thermoplastic wood-plastic composite according to claim 1, is characterized in that: the weight percent of described each component is as follows:
3. thermoplastic wood-plastic composite according to claim 1, is characterized in that: the weight percent of described each component is as follows:
4. thermoplastic wood-plastic composite according to claim 1, is characterized in that: the weight ratio of described vegetable fibre and described plastics is 9:10.
5. thermoplastic wood-plastic composite according to any one of claim 1 to 4, is characterized in that: described vegetable fibre is wood powder, rice husk, straw powder, and forestry three remains the combination of one or more arbitrary proportions in thing powder.
6. thermoplastic wood-plastic composite according to any one of claim 1 to 4, it is characterized in that: described auxiliary agent is coupling agent, whipping agent, initiator, antioxidant, tinting material, fire retardant, stablizer, mould inhibitor, and one or more in lubricant.
7. a production method for thermoplastic wood-plastic composite according to claim 1, is characterized in that: comprise the following steps:
1) pre-treatment of vegetable fibre: being pulverized by vegetable fibre and sieving out granularity is carry out drying to it after 80 ~ 300 object particles, makes the water ratio < 5% of vegetable fibre;
2) modification of vegetable fibre: be the bio-oil factory lime-ash solution of 3 ~ 7% by biomass electric power plant lime-ash solution, mass concentration that mass concentration is 3 ~ 7%, and one or more accounting in the coupling agent of vegetable fibre weight 0.5% ~ 3% carry out modification to plant fibre surface;
3) mix: by modified vegetable fibre, plastic pellet, biomass electric power plant lime-ash or bio-oil factory lime-ash, and auxiliary agent mixes by described proportioning, for subsequent use;
4) granulation: mixture is fully fused the rear extruding pelletization of plasticizing at 110 ~ 180 DEG C;
5) hot-forming: the hot-forming mode of the pellet after extruding pelletization is obtained thermoplastic wood-plastic composite.
8. the production method of thermoplastic wood-plastic composite according to claim 7, it is characterized in that: described step 2) in, described coupling agent is titanic acid ester, stearic acid, paraffin, isocyanic ester, and the combination of one or more arbitrary proportions in maleic anhydride grafted polyethylene.
9. the production method of the thermoplastic wood-plastic composite according to claim 7 or 8, it is characterized in that: described step 4) in, double-screw plastic extrusion machine is first adopted to carry out fusion plasticizing, temperature is set as 110 ~ 170 DEG C, and then adopt single screw extrusion machine extruding pelletization, it is 115 ~ 180 DEG C that singe screw head temperature controls, and control extrusion pressure is 7 ~ 12MPa.
10. the production method of the thermoplastic wood-plastic composite according to claim 7 or 8, is characterized in that: described step 1) in, the vegetable fibre granularity after crushing and screening is 80 ~ 120 orders.
CN201310279688.7A 2013-07-05 2013-07-05 Thermoplastic wood-plastic composite and production method thereof CN103435882B (en)

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CN104387698B (en) * 2014-11-06 2016-03-30 安徽省三乐门窗幕墙工程有限公司 PVC wood plastic composite material that a kind of plant waste is produced and preparation method thereof
CN105713407A (en) * 2016-01-29 2016-06-29 安徽以诺木塑板材科技有限公司 Insect prevention and mold prevention wood-plastic panel
ES2632225B1 (en) * 2016-03-10 2018-06-14 Universidad A Distancia De Madrid Udima, S.A. Polymeric compound and procedure for obtaining it
CN106738182A (en) * 2016-12-09 2017-05-31 广西北海浩邦新能源科技有限公司 A kind of processing method of environment-friendly sheet
CN106827729A (en) * 2017-01-10 2017-06-13 东北林业大学 A kind of high temperature is coextruded Wood-plastic profiles
SE541870C2 (en) * 2017-12-21 2020-01-02 Stora Enso Oyj Improved process for manufacturing composite product
CN110294821A (en) * 2019-07-03 2019-10-01 广东工业大学 A kind of dispersing agent and its preparation method and application

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1640640A (en) * 2004-01-15 2005-07-20 中国科学院过程工程研究所 Composite waterproof plate, ad its manufacturing method and use
CN101224966A (en) * 2007-12-27 2008-07-23 中国科学院长春应用化学研究所 Wood-silicon-plastic net floor and preparation method thereof
CN102321374A (en) * 2011-07-29 2012-01-18 东北林业大学 Fire-retardant polyolefin based wood plastic composite material and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101418086B (en) * 2008-12-08 2011-02-02 中国热带农业科学院农产品加工研究所 Method for preparing rice hull ash-natural rubber composite material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1640640A (en) * 2004-01-15 2005-07-20 中国科学院过程工程研究所 Composite waterproof plate, ad its manufacturing method and use
CN101224966A (en) * 2007-12-27 2008-07-23 中国科学院长春应用化学研究所 Wood-silicon-plastic net floor and preparation method thereof
CN102321374A (en) * 2011-07-29 2012-01-18 东北林业大学 Fire-retardant polyolefin based wood plastic composite material and preparation method thereof

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