CN103554626B - A kind of fretting map polyethylene based wood-plastic composite material and preparation method thereof - Google Patents
A kind of fretting map polyethylene based wood-plastic composite material and preparation method thereof Download PDFInfo
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92561—Time, e.g. start, termination, duration or interruption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/044—Micropores, i.e. average diameter being between 0,1 micrometer and 0,1 millimeter
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
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- C08K2201/003—Additives being defined by their diameter
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- C08K2201/016—Additives defined by their aspect ratio
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The present invention discloses a kind of fretting map polyethylene based wood-plastic composite material and preparation method thereof.Matrix polyvinyl resin, modified wollastonite powder and talcum powder, linking agent, lubricant, thermal equilibrium type whipping agent, antioxidant, anti UV agent, pigment, modified plant fibers are stirred intensification, mix rear cooling discharging by this fretting map polyethylene based wood-plastic composite material, obtained Preblend, modified plant fibers is selected from one or more mixtures formed with arbitrary proportion in wood powder, bamboo powder, powdered rice hulls; Preblend is put into forcing machine granulation, extrusion foaming, cooling and shaping.The present invention manufactures conveniently, the inexpensive environmental protection of raw material, the abscess mean diameter of fretting map polyethylene based wood-plastic composite material is low to moderate 10 μm, vegetable fibre content is high to 45%, and the density of matrix material is low, flexural strength and impelling strength high, Application Areas is wide, and the present invention can be applicable to the field such as decoration, building, municipal administration, packaging, automotive upholstery.
Description
Technical field
The present invention relates to a kind of fretting map polyethylene based wood-plastic composite material and preparation method thereof, belong to field of compound material, also belong to Forestry Engineering field.
Background technology
Compared with Traditional Wood plastic composite materials, Wood-plastic foam matrix material not only can reduce the density of material due to the existence of abscess, and these bubbles effectively can stop the expansion of original crack in material, make crack tip rust, thus give the more excellent thermostability of material and resistance to fatigue, in fields such as building decoration, indoor decoration, artwork market, packed and transported, automotive upholsteries, all there are wide market outlook.Polyethylene (PE) is as general-purpose plastics, compared with polypropylene (PP), cheap, has good resistance to low temperature; Compared with polyvinyl chloride (PVC), from being prepared into use and even waste treatment all more environmental protection; Therefore, PE is adopted to be that matrix is prepared fine foaming wood plastic composite materials and had resource, cost and environment-friendly advantage.
But the flexural strength of polyethylene based wood-plastic composite material is low, creep strain is large, and when vegetable fibre content is increased to 20%, namely the impelling strength of matrix material obviously decline, and a large amount of existence of vegetable fibre can increase the foaming difficulty of matrix material, affect the foam performance of material, and then weaken the mechanical property of material, affect the use of material.
Summary of the invention
The flexural strength existed for above-mentioned fretting map polyethylene based wood-plastic composite material is low, poor impact toughness and the deficiency such as foaming difficulty is large, the object of this invention is to provide that a kind of cell morphology is good, vegetable fibre content is high, density is low, flexural strength and the high fretting map polyethylene based wood-plastic composite material of impelling strength and preparation method thereof.This method adopts chemically crosslinked and blending and modifying high density polyethylene(HDPE) and Low Density Polyethylene, prepare fretting map polyethylene based wood-plastic composite material, and adopt coupling agent modified talcum powder and wollastonite powder as modified filler activeness and quietness foam composite material, while improving fretting map Polyethylene wood plastic composite material foam performance, improve flexural strength and the impelling strength of material.This method is simple to operation, the inexpensive environmental protection of raw material, quality of materials is light, intensity is high, good toughness.
For achieving the above object, the present invention adopts following technical scheme:
Described fretting map polyethylene based wood-plastic composite material, is prepared from by the raw material comprising following mass fraction:
Polyvinyl resin 100 parts, 20 ~ 80 parts, vegetable fibre; Talcum powder 5 ~ 25 parts; Wollastonite 5 ~ 20 parts; Coupling agent 0.1 ~ 1.5 part; Lubricant 0.5 ~ 3 part; Whipping agent 0.5 ~ 3 part; Linking agent 0.1 ~ 3 part; Antioxidant 0.5 ~ 2 part; Anti UV agent 0.5 ~ 2 part; Interfacial compatibilizer 1 ~ 7 part; Pigment 1 ~ 3 part.
Described polyvinyl resin is made up of Low Density Polyethylene and high density polyethylene(HDPE), described Low Density Polyethylene is weight-average molecular weight Mw is 40000 ~ 200000, degree of crystallinity is 20% ~ 40%, at 230 DEG C, the melt index under 2.16 KN test conditions is Low Density Polyethylene pellet or the powder 90 parts of 1-15 g/10min; And weight-average molecular weight Mw be 50000 ~ 300000, degree of crystallinity is 70% ~ 90%, at 230 DEG C, the melt index under 2.16 KN test conditions is pellets of high density polyethylene or the powder 10 parts of 2-10 g/10min.
Described vegetable fibre is wood powder, one or more mixtures formed with arbitrary proportion in bamboo powder, powdered rice hulls, and water ratio is 1%-3%, and median size is 40 order ~ 120 orders; Described arbitrary proportion is the ratio of this area routine, is the technology that those skilled in the art can realize.
Described talcum powder median size is 1000 ~ 1500 orders.
Described wollastonite powder is needle-like, and length-to-diameter ratio is 10:1 ~ 20:1, and median size is 1000 order ~ 1500 orders.
Described coupling agent is this area routine techniques, the preferred silicane of the present invention or titanate ester or aluminate coupling agent.
Described lubricant is this area routine techniques, one or both the mixture in preferably polyethylene wax of the present invention or stearic acid or stearate.
Described whipping agent is this area routine techniques, the preferred thermal equilibrium type whipping agent of the present invention, and model is the Cellmic C 121 mixture of Hydrocell 232.
Described linking agent is this area routine techniques, the preferred dicumyl peroxide of the present invention (DCP), powdery, technical grade.
Described antioxidant is this area routine techniques, and the preferred hindered phenol anti-oxidants 1010 of the present invention and phosphite antioxidant 168, with the mixture that 1:1 ratio is composite.
Described anti UV agent is this area routine techniques, the preferred Octabenzone UV531 of the present invention.
Described pigment is inorganic pigment powder or the special pigment dyestuffs of plastics such as this area routine techniques, preferential oxidation iron of the present invention.
Described interfacial compatibilizer is this area routine techniques, the metallocene ethylene-l-octane copolymer of the polyethylene of preferably acrylated compound class of the present invention grafting or the polypropylene of acrylic compound class grafting or the grafting of acrylic compound class.
The preferred maleic anhydride grafted polyethylene of polyethylene (MAPE) of acrylic compound class grafting; The preferred maleic anhydride inoculated polypropylene of polypropylene (MAPP) of acrylic compound class grafting; Metallocene ethylene-l-octane copolymer preferred maleic anhydride graft metallocene ethylene-l-octane copolymer (MAPOE) of acrylic compound class grafting.
Fretting map polyethylene based wood-plastic composite material of the present invention and preparation method thereof, its preparation process is:
1) talcum powder and wollastonite powder modification, the talcum powder of drying and wollastonite powder are put into high-speed mixer, stirring is warming up to 80 ~ 100 DEG C, adopting with volumetric concentration is that the ethanol of 99% is with the coupling agent metering spray of 1:1 ~ 1:8 dilution proportion, after stirring 10 ~ 30min, cooling discharging, makes modified filler;
2) each raw material is taken by recipe ratio; Low Density Polyethylene (LDPE), high density polyethylene(HDPE) (HDPE), modified filler, linking agent, lubricant, whipping agent, antioxidant, anti UV agent, pigment, interfacial compatibilizer, dry vegetable fibre are put into high-speed mixer; stirring is warming up to 110 ~ 120 DEG C; after stirring 15 ~ 50 min; cooling discharging, makes Preblend;
3) by the wooden plastic particles of above-mentioned granulation, put into twin screw extruder, extrusion foaming process prepares fretting map polyethylene based wood-plastic composite material; Extruder barrel temperature is 165 ~ 180 DEG C, head temperature is 155 ~ 175 DEG C, die temperature is 155 ~ 165 DEG C.
Feature of the present invention is: adopt cross-linking modified and mode that is blending and modifying, improve the foam performance of polyethylene based wood-plastic composite material, the LDPE pellet that employing Low Density Polyethylene is weight-average molecular weight Mw is 40000 ~ 200000, degree of crystallinity is 20% ~ 40%, melt index (230 DEG C, 2.16 KN) is 1-15 g/10min or powder; Described high density polyethylene(HDPE) is weight-average molecular weight Mw is 50000 ~ 300000, degree of crystallinity is 70% ~ 90%, melt index (230 DEG C, 2.16KN) be HDPE pellet or the powder of 2-10 g/10min, make with the vegetable fibres such as wood powder, bamboo powder are cross-linking modified and blending and modifying is easier, simple and the environmental protection of operating process, the vegetable fibre content of the fretting map polyethylene based wood-plastic composite material of preparation up to 45%, density is low, cell morphology is good, the mean diameter of abscess is low to moderate 10 μm; And by adding modified filler, activeness and quietness matrix material, the fretting map polyethylene based wood-plastic composite material flexural strength of preparation is high, impelling strength is large, may be used on upholstery decoration, material of construction, packed and transported, artwork market, make furniture, skirting, furred ceiling lines, floor, photo frame, picture frame, picture frame, amortizing packaging material etc., also may be used on the high-grade Material Fields such as automotive upholstery, there is the wide market space and development prospect.
Embodiment
The present invention is illustrated below in conjunction with embodiment, and described part is mass parts.The LDPE pellet that Low Density Polyethylene in following embodiment is weight-average molecular weight Mw is 40000 ~ 200000, degree of crystallinity is 20% ~ 40%, melt index (230 DEG C, 2.16 KN) is 1-15 g/10min or powder; The HDPE pellet that described high density polyethylene(HDPE) is weight-average molecular weight Mw is 50000 ~ 300000, degree of crystallinity is 70% ~ 90%, melt index (230 DEG C, 2.16KN) is 2-10 g/10min or powder; Wood powder, bamboo powder are all purchased from jewel bamboo wood powder company limited of Zhejiang Linan City; Powdered rice hulls is purchased from Wuxi Run Lv composite product company limited; Talcum powder and wollastonite powder are all purchased from Jiangxi Sheng Tai Chemical Co., Ltd.; Silane KH550 coupling agent is purchased from Nanjing Dao Ning Chemical Co., Ltd.; Linking agent dicumyl peroxide (DCP) is purchased from Shanghai Gaoqiao petrochemical industry fine chemistry industry company; Lubricant polyethylene wax or stearic acid or stearate are commercially available; Whipping agent Cellmic C 121 mixture is purchased from Guangzhou Hui Ke Chemical Co., Ltd.; Antioxidant be hindered phenol anti-oxidants 1010/ phosphite antioxidant 168 compound (B225) purchased from Switzerland's vapour Bagong department, anti UV agent UV531 is purchased from Switzerland's vapour Bagong department; Iron oxide pigment powder is purchased from Sanhuan Pigment Co., Ltd., Hunan Prov.; Interfacial compatibilizer maleic anhydride graft metallocene ethylene-l-octane copolymer (MAPOE) is purchased from Nanjing De Ba Chemical Co., Ltd..
Embodiment one
Talcum powder 15 parts and wollastonite powder 10 parts to be placed in the baking oven of 100 DEG C after dry 8 hours, put into high-speed mixer, stirring is warming up to 90 DEG C, adopt with volumetric concentration be 99% ethanol spray with the Silane coupling agent KH550 of 1:2 dilution proportion (Silane coupling agent KH550 accounts for 2% of talcum powder and wollastonite powder total mass), after mixing 15min, cooling discharging, makes modified filler; Wood powder to be placed in the baking oven of 105 DEG C dry 10 hours.In mass ratio Low Density Polyethylene 90 parts, high density polyethylene(HDPE) 10 parts, modified filler, linking agent 1.5 parts, lubricant 1 part, whipping agent 2 parts, antioxidant 1 part, anti UV agent 1 part, interfacial compatibilizer 1.5 parts, wood powder 20 parts, pigment 2 parts are put into high-speed mixer, after mixing 25 min, cooling discharging, make extruding pelletization after Preblend, prilling temperature is 165 DEG C, granulation time is 20 min, obtains wooden plastic particles; Adopt forcing machine carry out melting, blended, extrude, through foaming mould foaming, cooling and shaping, shaping fretting map polyethylene based wood-plastic composite material sheet material, extruder barrel temperature 175 DEG C, head temperature 165 DEG C, die temperature 160 DEG C.
Embodiment two
Talcum powder 10 parts and wollastonite powder 10 parts to be placed in the baking oven of 100 DEG C after dry 8 hours, put into high-speed mixer, stirring is warming up to 90 DEG C, adopting with volumetric concentration is that the ethanol of 99% is with the Silane coupling agent KH550 of 1:2 dilution proportion (Silane coupling agent KH550 accounts for 2% of talcum powder and wollastonite powder total mass) metering spray, after mixing 15min, cooling discharging, makes modified filler; Bamboo powder to be placed in the baking oven of 105 DEG C dry 10 hours.In mass ratio Low Density Polyethylene 90 parts, high density polyethylene(HDPE) 10 parts, modified filler, linking agent 1.5 parts, lubricant 1.5 parts, antioxidant 1 part, anti UV agent 1 part, 40 parts, bamboo powder, interfacial compatibilizer 3 parts, pigment 2 parts are put into high-speed mixer, after mixing 25 min, cooling discharging, make extruding pelletization after Preblend, prilling temperature is 165 DEG C, granulation time is 20 min, obtains wooden plastic particles; Adopt forcing machine to carry out melt blending, extrude, through foaming mould foaming, cooling and shaping, shaping fretting map polyethylene based wood-plastic composite material sheet material, extruder barrel temperature 175 DEG C, head temperature 165 DEG C, die temperature 160 DEG C.
Embodiment three
Talcum powder 10 parts and wollastonite powder 10 parts to be placed in the baking oven of 100 DEG C after dry 8 hours, put into high-speed mixer, stirring is warming up to 90 DEG C, adopting with volumetric concentration is that the ethanol of 99% is with the Silane coupling agent KH550 of 1:2 dilution proportion (Silane coupling agent KH550 accounts for 2% of talcum powder and wollastonite powder total mass) metering spray, after mixing 12min, cooling discharging, makes modified filler; Powdered rice hulls to be placed in the baking oven of 105 DEG C dry 10 hours.By weight Low Density Polyethylene 90 parts, high density polyethylene(HDPE) 10 parts, modified filler, linking agent 1 part, lubricant 2 parts, antioxidant 1 part, anti UV agent 1 part, powdered rice hulls 60 parts, interfacial compatibilizer 4 parts, pigment 2 parts are put into high-speed mixer, after mixing 30 min, cooling discharging, make extruding pelletization after Preblend, prilling temperature is 165 DEG C, granulation time is 20 min, obtains wooden plastic particles; Adopt forcing machine carry out melting, blended, extrude, through foaming mould foaming, cooling and shaping, shaping fretting map polyethylene based wood-plastic composite material sheet material, extruder barrel temperature 180 DEG C, head temperature 165 DEG C, die temperature 160 DEG C.
Below by way of the physical and mechanical property of test material, prove the effect of the embodiment of the present invention 1, embodiment 2 and embodiment 3, its detected result is as follows:
Fretting map polyethylene based wood-plastic foam composite material in embodiment 1, embodiment 2 and embodiment 3, its density is respectively 0.81 gcm
-3, 0.86 gcm
-3with 0.91 gcm
-3, and the density of common non-polyethylene foamed base wood-plastic composite material is respectively 0.96 gcm accordingly
-3, 0.99 gcm
-3with 1.04 gcm
-3, density reduces nearly 15%; Flexural strength is respectively 16.56 MPa, 17.19 MPa and 17.54 MPa, and the flexural strength of common non-polyethylene foamed base wood-plastic composite material is respectively 15.12 MPa, 15.73 MPa and 15.82 MPa accordingly, and flexural strength improves about 10%; Notched Izod impact strength is respectively 16.78 KJm
-2, 13.57 KJm
-2with 12.31 KJm
-2, and the notched Izod impact strength of common non-polyethylene foamed base wood-plastic composite material is respectively 14.98 KJm accordingly
-2,12.04 KJm
-2with 10.97 KJm
-2, notched Izod impact strength improves about 13%.
Visible in sum, fretting map polyethylene based wood-plastic composite material of the present invention is compared with common non-polyethylene foamed base wood-plastic composite material, and have lower density, higher flexural strength and impelling strength, the specific tenacity of material improves about 30%.
Claims (7)
1. a fretting map polyethylene based wood-plastic composite material, is made up of the component of following mass fraction: polyvinyl resin 100 parts, 20 ~ 80 parts, vegetable fibre; Talcum powder 5 ~ 25 parts; Wollastonite 5 ~ 20 parts; Coupling agent 0.1 ~ 1.5 part; Lubricant 0.5 ~ 3 part; Whipping agent 0.5 ~ 3 part; Linking agent 0.1 ~ 3 part; Antioxidant 0.5 ~ 2 part; Anti UV agent 0.5 ~ 2 part; Interfacial compatibilizer 1 ~ 7 part; Pigment 1 ~ 3 part;
Described polyvinyl resin is made up of Low Density Polyethylene and high density polyethylene(HDPE), described Low Density Polyethylene is weight-average molecular weight Mw is 40000 ~ 200000, degree of crystallinity is 20% ~ 40%, at 230 DEG C, the melt index under 2.16 KN test conditions is Low Density Polyethylene pellet or the powder 90 parts of 1-15 g/10min; And weight-average molecular weight Mw be 50000 ~ 300000, degree of crystallinity is 70% ~ 90%, at 230 DEG C, the melt index under 2.16 KN test conditions is pellets of high density polyethylene or the powder 10 parts of 2-10 g/10min;
Described vegetable fibre is one or more the mixture in wood powder, bamboo powder, powdered rice hulls, and water ratio is 1% ~ 3%, and median size is 40 order ~ 120 orders;
Described whipping agent is thermal equilibrium type whipping agent, and model is the Cellmic C 121 mixture of Hydrocell 232, and heat decomposition temperature is 165-200 DEG C, gas forming amount is 180 ml/g.
2. fretting map polyethylene based wood-plastic composite material according to claim 1, is characterized in that:
Described talcum powder, its median size is 1000 order ~ 1500 orders; Described wollastonite powder is needle-like, and length-to-diameter ratio is 10:1 ~ 20:1, and median size is 1000 order ~ 1500 orders.
3. fretting map polyethylene based wood-plastic composite material according to claim 1 and 2, is characterized in that:
Described coupling agent is silicane or titanate ester or aluminate coupling agent; Described linking agent is dicumyl peroxide, powdery, technical grade; Described lubricant is: one or both mixture of polyethylene wax or stearic acid or stearate.
4. fretting map polyethylene based wood-plastic composite material according to claim 1 and 2, is characterized in that:
Described antioxidant is hindered phenol anti-oxidants 1010 and phosphite antioxidant 168 with the composite mixture of 1:1 ratio; Described anti UV agent is Octabenzone UV531.
5. fretting map polyethylene based wood-plastic composite material according to claim 1 and 2, is characterized in that:
Described interfacial compatibilizer is the metallocene ethylene-l-octane copolymer of the polyethylene of acrylic compound class grafting or the polypropylene of acrylic compound class grafting or the grafting of acrylic compound class; Described pigment is inorganic pigment powder or the special organic pigment powder of plastics.
6. fretting map polyethylene based wood-plastic composite material according to claim 5, is characterized in that: described inorganic pigment powder is iron oxide pigment powder.
7. arbitrary described fretting map polyethylene based wood-plastic composite material of claim 1-6 and preparation method thereof, it is characterized in that, its preparation process is:
1) modified talc powder and wollastonite powder: the talcum powder of drying and wollastonite powder are placed in high-speed mixer, stirring is warming up to 80 ~ 100 DEG C, adopting with volumetric concentration is that the ethanol of 99% is with the coupling agent metering spray of 1:1 ~ 1:8 dilution proportion, after stirring 10 ~ 30min, cooling discharging, makes modified filler;
2) modified filler obtained to the Low Density Polyethylene weighed by formula, high density polyethylene(HDPE), linking agent, lubricant, whipping agent, antioxidant, anti UV agent, pigment, interfacial compatibilizer, dry vegetable fibre and step 1) is put into high-speed mixer; stirring is warming up to 110 ~ 120 DEG C; after stirring 15 ~ 50 min; cooling discharging, makes Preblend;
3) by step 2) Preblend that mixes puts into forcing machine, and be a granulated into wooden plastic particles, prilling temperature is: 145 ~ 160 DEG C, granulation time is 20 ~ 40 min;
4) by the wooden plastic particles of step 3) granulation, put into twin screw extruder, extrusion foaming process prepares fretting map polyethylene based wood-plastic composite material; The barrel temperature of forcing machine is 165 ~ 185 DEG C, head temperature is 155 ~ 175 DEG C, die temperature is 155 ~ 165 DEG C.
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