CN102911508A - Polyester fiber enhanced wood-plastic composite material and preparation method thereof - Google Patents
Polyester fiber enhanced wood-plastic composite material and preparation method thereof Download PDFInfo
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- CN102911508A CN102911508A CN2012104509346A CN201210450934A CN102911508A CN 102911508 A CN102911508 A CN 102911508A CN 2012104509346 A CN2012104509346 A CN 2012104509346A CN 201210450934 A CN201210450934 A CN 201210450934A CN 102911508 A CN102911508 A CN 102911508A
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Abstract
The invention relates to a composite material and a preparation method thereof, and in particular relates to a polyester fiber enhanced wood-plastic composite material and a preparation method thereof, aiming at solving the technical problem that the existing wood-plastic composite material is poor in comprehensive mechanical performance. The polyester fiber enhanced wood-plastic composite material is prepared from thermoplastic plastic, wood fiber, the polyester fiber, a lubricating agent and a coupling agent, and is prepared by the method comprising the steps of: mixing the dispersed polyester fiber and the wood fiber, the polyester fiber, the lubricating agent and the coupling agent; pelleting by a twin-screw extruder; and molding to obtain the wood-plastic composite material. The polyester fiber enhanced prepared wood-plastic composite material has the strength of 71.34+/-0.73MPa, the modulus of elasticity of 5.85+/-0.17GPa, the tensile strength of 51.96+/-0.14MPa and the non-notched impact strength of 17.96+/-0.92KJ/m<2>.
Description
Technical field
The present invention relates to a kind of matrix material and preparation method thereof.
Background technology
Wood plastic composite is take xylon or vegetable fibre as main raw material, makes the high-performance that itself and thermoplastic polymer make by different composite pathways, the environmental protection matrix material of high added value through suitable processing.It utilizes problem to receive much concern because having solved high efficiente callbacks natural and synthesized polymer material waste material and the resources such as straw from village, straw and timber clout, waste material.It has the feature performance benefit of lignocellulosic material and macromolecular material concurrently, be that good stability of the dimension, water resistance are good, erosion resistance etc., therefore be used as the substitute of solid wood material or pure plastics and be widely used in the fields such as building products, automobile, gardens and outdoor facility, development rapidly.But along with the continuous increase of Application Areas, requirements at the higher level have been proposed for the performance of wood plastic composite.Because its intensity and shock resistance are relatively low, and the easy shortcoming such as creep, be restricted in the application of Structural Engineering Material Field.
Enhancing and the research of toughness reinforcing aspect about wood plastic composite are a lot, but are difficult to obtain simultaneously the product of high strength and high tenacity, so that the relatively poor problem of existing wood plastic composite ubiquity comprehensive mechanical property.For example, interpolation coupling agent or phase solvent etc. strengthen the interface binding power between polymeric matrix and the lignocellulosic material, as add maleic anhydride stem grafting polyolefin, silane coupling agent, isocyanic ester etc., tensile strength increases, but it is very unobvious that shock resistance is improved effect; The interpolation elastomerics improves the toughness of polymeric matrix, such as white carbon black, terpolymer EP rubber, styrene-butadiene rubber(SBR), styrene-ethylene-butylene-styrene block copolymer etc., so that the impact property of material is improved.But the increase of toughness often causes the reduction of intensity, and the stretching of material, flexural strength and modulus have obvious decline, and processing characteristics also can be affected; The foaming technique of wood plastic composite can significantly improve its toughness and shock resistance, but the foaming meeting is so that the rigidity of material, intensity and creep property are relatively poor.
Summary of the invention
The objective of the invention is in order to solve the poor technical problem of existing wood plastic composite comprehensive mechanical property, provide a kind of trevira to strengthen wood plastic composite and preparation method thereof.
Trevira strengthens wood plastic composite and is made by 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents by weight;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination.
The granularity of described wood fibre is 20～120 orders.
The chopped filament length degree of described trevira is that 1mm～12mm, diameter are that 10 μ m～25 μ m, length-to-diameter ratio are 80～1000.
Described Metallic stearates is a kind of in stearic acid sodium, strontium stearate, calcium stearate and the Zinic stearas or wherein several combination.
The preparation method that trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination;
Two, trevira is joined in the distilled water, add dispersion agent again, add wood fibre, stir, then dehydration according to the sequential operation of washing first again dehydration 3～5 times, is dried to water ratio again and is lower than 3% under 105 ℃ condition, obtain mixture a;
Three, mixture a, thermoplastics, lubricant and coupling agent are added in the high-speed mixer, be that 60 ℃～130 ℃, rotating speed are to mix 5 minutes～15 minutes under the condition of 400～1800r/min in temperature, then be cooled to 40 ℃～60 ℃, discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite;
Dispersion agent described in the step 2 is a kind of in Xylo-Mucine, methylcellulose gum and the Natvosol or wherein several combination;
The preparation method that trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination;
Two, trevira is carried out mechanical dispersion (stirring), then the trevira after will disperseing and wood fibre add in the high-speed mixer, under 105 ℃～150 ℃ condition, keep to stir 3 minutes～15 minutes, and be lower than 3% to water ratio, obtain mixture b;
Three, mixture b, thermoplastics, lubricant and coupling agent add in the high-speed mixer, be that 60 ℃～130 ℃, rotating speed are to mix 5 minutes～15 minutes under the condition of 400～1800r/min in temperature, then be cooled to 40 ℃～60 ℃, discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
The flexural strength that adopts the trevira of the inventive method preparation to strengthen wood plastic composite can reach 71.34 ± 0.73MPa, Young's modulus can reach that 5.85 ± 0.17GPa, tensile strength can reach 51.96 ± 0.14MPa, unnotched impact strength can reach 17.96 ± 0.92KJ/m
2
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the present embodiment trevira strengthens wood plastic composite and is made by 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents by weight;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination.
When the thermoplastics described in the present embodiment is composition, between each composition be arbitrarily than.
When the wood fibre described in the present embodiment is composition, between each composition be arbitrarily than.
When the coupling agent described in the present embodiment is composition, between each composition be arbitrarily than.
Embodiment two: present embodiment and embodiment one are different is that the granularity of described wood fibre is 20～120 orders.Other is identical with embodiment one.
Embodiment three: what present embodiment and embodiment one were different is that the chopped filament length degree of described trevira is that 1mm～12mm, diameter are that 10 μ m～25 μ m, length-to-diameter ratio are 80～1000.Other is identical with embodiment one.
Embodiment four: present embodiment and embodiment one different described Metallic stearates be a kind of in stearic acid sodium, strontium stearate, calcium stearate and the Zinic stearas or wherein several combination be.Other is identical with embodiment one.
When the Metallic stearates described in the present embodiment is composition, between each composition be arbitrarily than.
Embodiment five: the preparation method that embodiment one described trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination;
Two, trevira is joined in the distilled water, add dispersion agent again, add wood fibre, stir, then dehydration according to the sequential operation of washing first again dehydration 3～5 times, is dried to water ratio again and is lower than 3% under 105 ℃ condition, obtain mixture a;
Three, mixture a, thermoplastics, lubricant and coupling agent are added in the high-speed mixer, be that 60 ℃～130 ℃, rotating speed are to mix 5 minutes～15 minutes under the condition of 400～1800r/min in temperature, then be cooled to 40 ℃～60 ℃, discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite;
Dispersion agent described in the step 2 is a kind of in Xylo-Mucine, methylcellulose gum and the Natvosol or wherein several combination.
When the thermoplastics described in the present embodiment is composition, between each composition be arbitrarily than.
When the wood fibre described in the present embodiment is composition, between each composition be arbitrarily than.
When the coupling agent described in the present embodiment is composition, between each composition be arbitrarily than.
When the dispersion agent described in the present embodiment is composition, between each composition be arbitrarily than.
Embodiment six: present embodiment and embodiment five are different is that the granularity of the wood fibre described in the step 1 is 20～120 orders.Other is identical with embodiment five.
Embodiment seven: what present embodiment and embodiment five were different is that the chopped filament length degree of the trevira described in the step 1 is that 1mm～12mm, diameter are that 10 μ m～25 μ m, length-to-diameter ratio are 80～1000.Other is identical with embodiment five.
Embodiment eight: present embodiment and embodiment five are different is that the Metallic stearates described in the step 1 is a kind of in stearic acid sodium, strontium stearate, calcium stearate and the Zinic stearas or wherein several combination.Other is identical with embodiment five.
Embodiment nine: the preparation method that embodiment one described trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination;
Two, trevira is carried out mechanical dispersion, the trevira after then will disperseing and wood fibre add in the high-speed mixer, keep stirring 3 minutes～15 minutes under 105 ℃～150 ℃ condition, are lower than 3% to water ratio, obtain mixture b;
Three, mixture b, thermoplastics, lubricant and coupling agent add in the high-speed mixer, be that 60 ℃～130 ℃, rotating speed are to mix 5 minutes～15 minutes under the condition of 400～1800r/min in temperature, then be cooled to 40 ℃～60 ℃, discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
When the thermoplastics described in the present embodiment is composition, between each composition be arbitrarily than.
When the wood fibre described in the present embodiment is composition, between each composition be arbitrarily than.
When the coupling agent described in the present embodiment is composition, between each composition be arbitrarily than.
Embodiment ten: present embodiment and embodiment nine are different is that the granularity of the wood fibre described in the step 1 is 20～120 orders; The chopped filament length degree of trevira described in the step 1 is that 1mm～12mm, diameter are that 10 μ m～25 μ m, length-to-diameter ratio are 80～1000; Metallic stearates described in the step 1 is a kind of in stearic acid sodium, strontium stearate, calcium stearate and the Zinic stearas or wherein several combination.Other is identical with embodiment nine.
Adopt following experimental verification effect of the present invention:
Experiment one:
The preparation method of fiber reinforcement wood plastic composite carries out according to following steps:
One, takes by weighing by weight 100 parts thermoplastics, 169 parts of wood fibres, 6 parts of lubricants and 15 parts of coupling agents;
Wherein said thermoplastics is high density polyethylene(HDPE);
Described wood fibre is wood powder;
Described lubricant is stearic acid;
Described coupling agent is titanic acid ester;
The granularity of the wood fibre described in the step 1 is 20 orders;
Two, wood fibre is added in the high-speed mixer, under 105 ℃ condition, keep to stir 3 minutes, be lower than 3% to water ratio;
Three, the wood fibre of processing through step 2, thermoplastics, lubricant and coupling agent add in the high-speed mixer, are that 60 ℃, rotating speed are to mix 5 minutes under the condition of 400r/min in temperature, then are cooled to 40 ℃, and discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets the fiber reinforcement wood plastic composite.
Experiment two:
The preparation method that trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 100 parts thermoplastics, 169 parts of wood fibres, 8 parts of trevira, 6 parts of lubricants and 15 parts of coupling agents;
Wherein said thermoplastics is high density polyethylene(HDPE);
Described wood fibre is wood powder;
Described trevira is the chopped silk of trevira;
Described lubricant is paraffin;
Described coupling agent is isocyanic ester;
The granularity of the wood fibre described in the step 1 is 120 orders; The chopped filament length degree of trevira described in the step 1 is that 12mm, diameter are that 25 μ m, length-to-diameter ratio are 1000.
Two, trevira is carried out mechanical dispersion (stirring), the trevira after then will disperseing and wood fibre add in the high-speed mixer, keep stirring 5 minutes under 110 ℃ condition, are lower than 3% to water ratio, obtain mixture b;
Three, mixture b, thermoplastics, lubricant and coupling agent add in the high-speed mixer, are that 60 ℃, rotating speed are to mix 5 minutes under the condition of 800r/min in temperature, then are cooled to 50 ℃, and discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
Experiment three:
The preparation method that trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 100 parts thermoplastics, 166 parts of wood fibres, 16 parts of trevira, 6 parts of lubricants and 15 parts of coupling agents;
Wherein said thermoplastics is high density polyethylene(HDPE);
Described wood fibre is the combination of bamboo powder, Semen Maydis powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and bagasse, and between each composition be arbitrarily than;
Described trevira is the chopped silk of trevira;
Described lubricant is that polypropylene is cured;
Described coupling agent is maleic anhydride inoculated polypropylene;
The granularity of the wood fibre described in the step 1 is 100 orders; The chopped filament length degree of trevira described in the step 1 is that 10mm, diameter are that 15 μ m, length-to-diameter ratio are 500;
Two, trevira is carried out mechanical dispersion, the trevira after then will disperseing and wood fibre add in the high-speed mixer, keep stirring 3 minutes under 105 ℃ condition, are lower than 3% to water ratio, obtain mixture b;
Three, mixture b, thermoplastics, lubricant and coupling agent add in the high-speed mixer, are that 60 ℃, rotating speed are to mix 5 minutes under the condition of 400r/min in temperature, then are cooled to 40 ℃, and discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
Experiment four:
The preparation method that trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 100 parts thermoplastics, 163 parts of wood fibres, 24 parts of trevira, 6 parts of lubricants and 15 parts of coupling agents;
Wherein said thermoplastics is polypropylene;
Described wood fibre is wood powder;
Described trevira is the chopped silk of trevira;
Described lubricant is polyethylene wax;
Described coupling agent is maleic anhydride inoculated polypropylene;
The granularity of the wood fibre described in the step 1 is 80 orders; The chopped filament length degree of trevira described in the step 1 is that 10mm, diameter are that 15 μ m, length-to-diameter ratio are 800;
Two, trevira is carried out mechanical dispersion, the trevira after then will disperseing and wood fibre add in the high-speed mixer, keep stirring 10 minutes under 140 ℃ condition, are lower than 3% to water ratio, obtain mixture b;
Three, mixture b, thermoplastics, lubricant and coupling agent add in the high-speed mixer, are that 120 ℃, rotating speed are to mix 12 minutes under the condition of 1000r/min in temperature, then are cooled to 50 ℃, and discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
Performance such as the table 1 of the matrix material that experiment one to experiment four prepares:
Table 1
Experiment five:
The preparation method that trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 100 parts thermoplastics, 160 parts of wood fibres, 24 parts of trevira, 6 parts of lubricants and 15 parts of coupling agents;
Wherein said thermoplastics is high density polyethylene(HDPE);
Described wood fibre is wood powder;
Described trevira is the chopped silk of trevira;
Described lubricant is that polyethylene wax is cured;
Described coupling agent is maleic anhydride grafted polystyrene;
The granularity of the wood fibre described in the step 1 is 80 orders; The chopped filament length degree of trevira described in the step 1 is that 10mm, diameter are that 15 μ m, length-to-diameter ratio are 800;
Two, trevira is carried out mechanical dispersion, the trevira after then will disperseing and wood fibre add in the high-speed mixer, keep stirring 10 minutes under 140 ℃ condition, are lower than 3% to water ratio, obtain mixture b;
Three, mixture b, thermoplastics, lubricant and coupling agent add in the high-speed mixer, are that 120 ℃, rotating speed are to mix 12 minutes under the condition of 1000r/min in temperature, then are cooled to 50 ℃, and discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
Experiment six:
The preparation method that trevira strengthens wood plastic composite carries out according to following steps:
One, takes by weighing by weight 100 parts thermoplastics, 160 parts of wood fibres, 24 parts of trevira, 6 parts of lubricants and 15 parts of coupling agents;
Wherein said thermoplastics is high density polyethylene(HDPE);
Described wood fibre is wood powder;
Described trevira is the chopped silk of trevira;
Described lubricant is polyethylene wax;
Described coupling agent is maleic anhydride grafted polyethylene;
The granularity of the wood fibre described in the step 1 is 80 orders; The chopped filament length degree of trevira described in the step 1 is that 10mm, diameter are that 15 μ m, length-to-diameter ratio are 800;
Two, trevira is joined in the distilled water, add again the dispersion agent Xylo-Mucine, add wood fibre, stir, dehydration is then according to the sequential operation of washing first again dehydration 5 times, under 105 ℃ condition, be dried to water ratio again and be lower than 3%, obtain mixture a;
Three, mixture a, thermoplastics, lubricant and coupling agent being added in the high-speed mixer, is that 130 ℃, rotating speed are to mix 15 minutes under the condition of 1000r/min in temperature, then is cooled to 60 ℃, and discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
Experiment five and test performance such as the table 2 that six gained trevira strengthen wood plastic composite:
Table 2
Claims (10)
1. trevira strengthens wood plastic composite, it is characterized in that trevira strengthens wood plastic composite and made by 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents by weight;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination.
2. described trevira strengthens wood plastic composite according to claim 1, and the granularity that it is characterized in that described wood fibre is 20～120 orders.
3. described trevira strengthens wood plastic composite according to claim 1, it is characterized in that the chopped filament length degree of described trevira is that 1mm～12mm, diameter are that 10 μ m～25 μ m, length-to-diameter ratio are 80～1000.
4. described trevira strengthens wood plastic composite according to claim 1, it is characterized in that described Metallic stearates is a kind of in stearic acid sodium, strontium stearate, calcium stearate and the Zinic stearas or wherein several combination.
5. the described trevira of claim 1 strengthens the preparation method of wood plastic composite, it is characterized in that the preparation method of trevira enhancing wood plastic composite carries out according to following steps:
One, takes by weighing by weight 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination;
Two, trevira is joined in the distilled water, add dispersion agent again, add wood fibre, stir, then dehydration according to the sequential operation of washing first again dehydration 3～5 times, is dried to water ratio again and is lower than 3% under 105 ℃ condition, obtain mixture a;
Three, mixture a, thermoplastics, lubricant and coupling agent are added in the high-speed mixer, be that 60 ℃～130 ℃, rotating speed are to mix 5 minutes～15 minutes under the condition of 400～1800r/min in temperature, then be cooled to 40 ℃～60 ℃, discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite;
Dispersion agent described in the step 2 is a kind of in Xylo-Mucine, methylcellulose gum and the Natvosol or wherein several combination.
6. described trevira strengthens the preparation method of wood plastic composite according to claim 5, and the granularity that it is characterized in that the wood fibre described in the step 1 is 20～120 orders.
7. described trevira strengthens the preparation method of wood plastic composite according to claim 5, it is characterized in that the chopped filament length degree of the trevira described in the step 1 is that 1mm～12mm, diameter are that 10 μ m～25 μ m, length-to-diameter ratio are 80～1000.
8. described trevira strengthens the preparation method of wood plastic composite according to claim 5, it is characterized in that the Metallic stearates described in the step 1 is a kind of in stearic acid sodium, strontium stearate, calcium stearate and the Zinic stearas or wherein several combination.
9. the described trevira of claim 1 strengthens the preparation method of wood plastic composite, it is characterized in that the preparation method of trevira enhancing wood plastic composite carries out according to following steps:
One, takes by weighing by weight 95～105 parts thermoplastics, 100～200 parts of wood fibres, 0.1～45 part of trevira, 1～10 part of lubricant and 10～20 parts of coupling agents;
Wherein said thermoplastics be polystyrene, high density polyethylene(HDPE), Low Density Polyethylene, polyethylene, polypropylene, and polyvinyl chloride in a kind of or wherein several combination;
Described wood fibre is a kind of in wood powder, bamboo powder, corn stalk powder, wheat stalk powder, rice straw powder, soybean stalk powder, broomcorn straw powder and the bagasse or wherein several combination;
Described trevira is the chopped silk of trevira;
Described lubricant is that stearic acid, Metallic stearates, paraffin, polyethylene wax or polypropylene are cured;
Described coupling agent is a kind of in titanic acid ester, isocyanic ester, maleic anhydride grafted polystyrene, maleic anhydride grafted polyethylene and the maleic anhydride inoculated polypropylene or wherein several combination;
Two, trevira is carried out mechanical dispersion, the trevira after then will disperseing and wood fibre add in the high-speed mixer, keep stirring 3 minutes～15 minutes under 105 ℃～150 ℃ condition, are lower than 3% to water ratio, obtain mixture b;
Three, mixture b, thermoplastics, lubricant and coupling agent add in the high-speed mixer, be that 60 ℃～130 ℃, rotating speed are to mix 5 minutes～15 minutes under the condition of 400～1800r/min in temperature, then be cooled to 40 ℃～60 ℃, discharging namely obtains Preblend;
Four, the twin screw extruder granulation is passed through in Preblend, moulding namely gets trevira and strengthens wood plastic composite.
10. described trevira strengthens the preparation method of wood plastic composite according to claim 9, and the granularity that it is characterized in that the wood fibre described in the step 1 is 20～120 orders; The chopped filament length degree of trevira described in the step 1 is that 1mm～12mm, diameter are that 10 μ m～25 μ m, length-to-diameter ratio are 80～1000; Metallic stearates described in the step 1 is a kind of in stearic acid sodium, strontium stearate, calcium stearate and the Zinic stearas or wherein several combination.
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