CN101704969A - Wood plastic composite for injection and preparation method and application thereof - Google Patents
Wood plastic composite for injection and preparation method and application thereof Download PDFInfo
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- CN101704969A CN101704969A CN200910194099A CN200910194099A CN101704969A CN 101704969 A CN101704969 A CN 101704969A CN 200910194099 A CN200910194099 A CN 200910194099A CN 200910194099 A CN200910194099 A CN 200910194099A CN 101704969 A CN101704969 A CN 101704969A
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- injection
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- plastic composite
- wood plastic
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- 238000002347 injection Methods 0.000 title claims abstract description 45
- 239000007924 injection Substances 0.000 title claims abstract description 45
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 44
- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 239000000178 monomer Substances 0.000 claims abstract description 33
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 239000002028 Biomass Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 229920000098 polyolefin Polymers 0.000 claims abstract description 9
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 9
- 239000007790 solid phase Substances 0.000 claims abstract description 7
- -1 polypropylene Polymers 0.000 claims description 30
- 239000012071 phase Substances 0.000 claims description 21
- 239000004698 Polyethylene Substances 0.000 claims description 20
- 229920000573 polyethylene Polymers 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 17
- 239000004743 Polypropylene Substances 0.000 claims description 16
- 229920001903 high density polyethylene Polymers 0.000 claims description 16
- 239000004700 high-density polyethylene Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 229920001155 polypropylene Polymers 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 235000007164 Oryza sativa Nutrition 0.000 claims description 10
- 235000009566 rice Nutrition 0.000 claims description 10
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 8
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 8
- 229920005669 high impact polystyrene Polymers 0.000 claims description 6
- 239000004797 high-impact polystyrene Substances 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 5
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- 241000609240 Ambelania acida Species 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims description 4
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 claims description 4
- 229920006225 ethylene-methyl acrylate Polymers 0.000 claims description 4
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 4
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 claims description 4
- 241000675108 Citrus tangerina Species 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 239000010905 bagasse Substances 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N ethyl acetate Substances CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005043 ethylene-methyl acrylate Substances 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 240000007594 Oryza sativa Species 0.000 claims 1
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- 238000005034 decoration Methods 0.000 claims 1
- 229920001684 low density polyethylene Polymers 0.000 claims 1
- 239000004702 low-density polyethylene Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 16
- 229920003023 plastic Polymers 0.000 abstract description 12
- 239000004033 plastic Substances 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 12
- 241000209094 Oryza Species 0.000 description 9
- 238000001035 drying Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 6
- 206010013786 Dry skin Diseases 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 6
- 239000003999 initiator Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000000967 suction filtration Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000005502 peroxidation Methods 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 235000019256 formaldehyde Nutrition 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010904 stalk Substances 0.000 description 1
Classifications
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- 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
- B29C2948/92704—Temperature
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention discloses a wood plastic composite for injection and a preparation method and application thereof. The composite comprises the following components in part by weight: 30 to 70 parts of thermoplastic plastic for injection, 30 to 70 parts of biomass fiber, 5 to 10 parts of solid phase graft copolymer of polyolefin and monomers, and 0.5 to 4 parts of processing agent. The preparation method comprises the following steps of: premixing the components in a high-speed mixer; adding the mixture into a double-screw extruder to extrude; and cooling and granulating the mixture to obtain the wood plastic composite for injection. The wood plastic composite for injection can be directly used or mixed with plastics on a general injection machine for forming to prepare products in complicated shapes. The wood plastic composite for injection is high in production speed and efficiency, is easy to realize automation production, and can also obviously improve compatibility and interface bonding between the hydrophobic plastics and the hydrophilic biomass fiber; and performances such as modulus, strength, size stability, water resistance, processability and the like of the composite are obviously improved.
Description
Technical field
The invention belongs to material preparation technology, particularly a kind of wood plastic composite for injection and preparation method thereof and application.
Background technology
In recent years, further expansion along with the macromolecular material Application Areas, the enhancing day by day of environmental consciousness, with biomass fiber and the particularly waste and old thermoplastics of thermoplastics (polyethylene such as wood powder, rice chaff, bamboo powder and stalks, polypropylene, polystyrene, ABS etc.) Wood plastic composite of making through the plastic shaping complete processing (WPC) has caused that people pay attention to greatly.WPC has the outward appearance and the secondary workability of similar wood, than log better dimensional stability, non-corrosibility are arranged, insect protected, protection against the tide, burst size of methanal is low, therefore hardness, rigidity have purposes widely in many fields such as material of construction, urban operating mechanism, wrapping material, article of furniture, automotive materials than plastics height.The main forming method of Wood plastic composite has at present: extrusion moulding, injection molding and hot-forming.The national inventing patent application that application number is 200410077610.8, name is called " a kind of wood plastic composite and preparation method thereof " discloses a kind of extrusion profile that is used for wood plastic composite and preparation method thereof, but does not relate to the injection molding Wood plastic composite.Injection molding advantage is that production rate is fast, efficient is high, easily realizes automatic production, and the goods of energy forming shape complexity.But Wood plastic composite has been owing to added a large amount of fibers, and the mechanical property that not only causes matrix material particularly toughness significantly reduces, and the flowing property of material is the phase strain differential also, is difficult to satisfy the requirement of injection processing.
Summary of the invention
Primary and foremost purpose of the present invention is exactly in order to solve above-mentioned the deficiencies in the prior art part, and a kind of preparation method of wood plastic composite for injection is provided.The wood plastic composite for injection that this preparation method makes has characteristics such as good mechanical performance, good processing flowability and low burst size of methanal, is a kind of novel environment friendly high-performance plastic wood composite material.
Another object of the present invention is to provide the wood plastic composite for injection that makes by described preparation method.
A further object of the present invention is to provide the application of described wood plastic composite for injection.
Purpose of the present invention realizes by following proposal: a kind of preparation method of wood plastic composite for injection comprises the steps:
(1) with 30～70 weight part injection thermoplasticss, 30～70 weight part biomass fibers, 5～10 weight part polyolefine and multi-monomer solid-phase graft copolymer and 0.5～4 weight part processing aid pre-mixing in high-speed mixer, temperature is 30～60 ℃, time is 20～30min, and rotating speed is 50～500rpm;
(2) Preblend that step (1) is made joins in twin screw or the three-screw extruder and extrudes, forcing machine driving screw rotating speed 60～150rpm, 140～200 ℃ of extruder temperatures;
(3) extrude product through cooling, granulation, obtain wood plastic composite for injection.
In order to realize the present invention better, step (1) is preferably adds other properties-correcting agent of 0～10 weight part when mixing; Described other properties-correcting agent is at least a in ethylene-ethyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate multipolymer (EMA), polyolefin elastomer (POE), terpolymer EP rubber (EPDM), styrene-butadiene copolymer (SBS), Hydrogenated SBS multipolymer (SEBS) or the styrene-isoprene block copolymer (SIS).
Described injection thermoplastics comprises new or waste and old injection stage thermoplastics, melting index is 2～45g/10min (190 ℃ and 2160g condition under), is preferably at least a in high density polyethylene(HDPE) (HDPE), new LDPE (film grade) (LDPE), LLDPE (LLDPE), polypropylene (PP), high-impact polystyrene (HIPS) or acrylonitrile-styrene-divinyl (ABS) multipolymer;
At least a in the preferred wood powder of described biomass fiber, rice chaff, bamboo powder, tangerine bar, tealeaf residue or the bagasse;
Described polyolefine and multi-monomer solid-phase graft copolymer are that the method that ZL00117390.1, name are called " preparation method of polyolefine and three monomer soild-phase graft copolymers and application thereof " and provide is prepared according to the patent No., polyolefine that obtains and multi-monomer solid-phase graft copolymer percentage of grafting height, a chain length, side chain composition and polarity are adjustable, can be used as the properties-correcting agent of hydrophobic plastic and wetting ability biomass fiber;
At least a in described processing aid preferably polyethylene wax, Poly Propylene Wax, silicone oil, stearic acid and soap salt thereof or the dioctyl phthalate (DOP) (DOP).
A kind of wood plastic composite for injection makes by above-mentioned preparation method.
Described wood plastic composite for injection directly or with plastics is mixed and can carries out forming process on general injector, is applied to daily necessities, household goods or Automobile Products field.
The present invention compared with prior art has following advantage and beneficial effect:
(1) goods of this Wood plastic composite energy forming shape complexity, and production rate is fast, efficient is high, easily realize automatic production.
Series of advantages such as (2) polyolefine and multi-monomer solid-phase graft copolymer have percentage of grafting height, chain length, side chain is formed and polarity is adjustable are particularly suitable for doing the interface modifier of various matrix materials and the compatilizer of blend polymer.With the properties-correcting agent of this grafts as the waste and old Wood plastic composite of injection, be used for polymer/inorganic filler compound system, can significantly improve consistency and interface junction platform between hydrophobic plastic and wetting ability wood powder or the biomass fiber, thereby make the performances such as modulus, intensity, dimensional stability, water tolerance of matrix material obtain to significantly improve.
(3) the present invention has enlarged the Application Areas of Wood plastic composite, can prepare complex-shaped goods by injection molding, thereby provides novel material for household articles, automotive trim, daily necessities, toy articles for use, gardens facility etc.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment 1
(1) preparation of polypropylene three monomer soild-phase graft copolymers: in stainless steel cauldron, add polypropylene (powder) 60 weight parts, monomer mixture 40 weight parts (maleic anhydride, methyl methacrylate and butyl acrylate are pressed mass ratio and mixed at 6: 4: 1), initiator peroxidation phenyl-diformyl (BPO) 1 weight part, add dimethylbenzene simultaneously as interfacial agent; Heated and stirred reaction under nitrogen protection, temperature is 120 ℃, reacts after 2 hours, with 70 ℃ of distilled water washs, suction filtration in 80 ℃ of dryings 24 hours, obtains polypropylene three monomer soild-phase graft copolymers in baking oven with product;
(2) with the waste and old thermoplastics polypropylene of 40 weight parts (PP) pellet (melting index is 6g/10min under 190 ℃ and 2160g condition), 60 weight part biomass fiber rice chaff, polypropylene three monomer soild-phase graft copolymers, other properties-correcting agent of 5 weight parts EVA, 3 weight part silicone oil pre-mixings in the universal high speed mixing machine of the preparation of 5 weight part steps (1), 60 ℃ of temperature, time 20min, rotating speed 100rpm;
(3) Preblend that mixes is joined in the general twin screw extruder of diameter 30mm and extrude, forcing machine driving screw rotating speed 80～100 changes 170～200 ℃ of extruder temperatures;
(4) extrude product through cooling, granulation, promptly get the wood plastic composite for injection of PP/ rice chaff;
(5) with the wood plastic composite for injection of gained and useless PP (melting index is 6g/10min under 190 ℃ and 2160g condition) plastics by weight ratio compounding in 1: 1, moulding on general injector, extruder temperature is 170～190 ℃, can obtain multiple injection product, this injection product has good mechanical performance and processing characteristics.The testing method of its physical and mechanical properties is with reference to GB GB/T 1039-92, and the melting index testing method is with reference to GB GB/T 3682-2000, and test result is as shown in table 1:
Table 1
| Raw material and prescription | Tensile strength (MPa) | Modulus in flexure (MPa) | Flexural strength (MPa) | Unnotched impact strength (kJ/ m 2) | Melting index (190 ℃ and 2160g condition under) (g/10min) |
| PP/ rice chaff Wood plastic composite | ??28.1 | ??2630 | ??58.9 | ??7.1 | ??4.3 |
Embodiment 2
(1) preparation of polyethylene three monomer soild-phase graft copolymers: in stainless steel cauldron, add high density polyethylene(HDPE) (powder) 60 weight parts, monomer mixture 40 weight parts (maleic anhydride, vinylbenzene and butyl acrylate are pressed mass ratio and mixed at 5: 5: 1), initiator peroxidation phenyl-diformyl 2 weight parts, add dimethylbenzene simultaneously as interfacial agent; Heated and stirred reaction under nitrogen protection, temperature is 100 ℃, reacts after 3 hours, with 60 ℃ of distilled water washs, suction filtration in 70 ℃ of dryings 40 hours, obtains polyethylene three monomer soild-phase graft copolymers in baking oven with product;
(2) with 60 weight part high density polyethylene(HDPE)s (HDPE) (melting index is 10g/10min under 190 ℃ and 2160g condition), 40 weight part wood powders, 10 weight account polyethylenes, three monomer soild-phase graft copolymers, 0.5 weight account polyethylene wax pre-mixing in the universal high speed mixing machine, 30 ℃ of temperature, time 30min, rotating speed 300rpm;
(3) Preblend that mixes is joined in the general twin screw extruder of diameter 35mm and extrude, forcing machine driving screw rotating speed 80～100 changes 140～180 ℃ of extruder temperatures;
(4) extrude product through cooling, granulation, promptly get the wood plastic composite for injection of PP/ rice chaff;
(5) the above-mentioned gained of extruding is obtained wood plastic composite for injection in general injector moulding, 160～180 ℃ of extruder temperatures can obtain multiple injection product.This injection product has good mechanical performance and processing characteristics, and the testing method of its physical and mechanical properties is with reference to GB GB/T 1039-92, and the melting index testing method is with reference to GB GB/T 3682-2000, and test result is as shown in table 2:
Table 2
| Raw material and prescription | Tensile strength (MPa) | Modulus in flexure (MPa) | Flexural strength (MPa) | Unnotched impact strength (kJ/m 2) | Melting index (190 ℃ and 2160g condition under) (g/10min) |
| HDPE/ wood powder Wood plastic composite | ??22.3 | ??1760 | ??38.8 | ??4.5 | ??5.6 |
Embodiment 3
(1) preparation of polyethylene three monomer soild-phase graft copolymers: in stainless steel cauldron, add new LDPE (film grade) (powder) 60 weight parts, monomer mixture 40 weight parts (AA, St and BA press mass ratio and mix at 5: 5: 1), initiator azobisisobutyronitrile (AIBN) 1 weight part, add dimethylbenzene simultaneously as interfacial agent; Heated and stirred reaction under nitrogen protection, temperature is 100 ℃, reacts after 2 hours, with 60 ℃ of distilled water washs, suction filtration in 70 ℃ of dryings 40 hours, obtains polyethylene three monomer soild-phase graft copolymers in baking oven with product;
(2) with 70 parts by weight of acrylonitrile-styrene butadiene (ABS) pellet (melting index is 21g/10min under 190 ℃ and 2160g condition), the mixture of 30 weight part tangerine bar powder and rice chaff (proportioning is 50/50), 7 weight account polyethylenes, three monomer soild-phase graft copolymers, 10 weight part properties-correcting agent (SEBS/SIS=6/4), 1 weight part silicone oil pre-mixing in the universal high speed mixing machine, 40 ℃ of temperature, time 25min, rotating speed 250rpm;
(3) Preblend that mixes is joined in the general twin screw extruder of diameter 30mm and extrude, forcing machine driving screw rotating speed 100～120 changes 180～200 ℃ of extruder temperatures;
(4) extrude product through cooling, granulation, promptly get the wood plastic composite for injection of ABS.
(5) with above-mentioned wood plastic composite for injection moulding on general injector of extruding gained, 160～200 ℃ of extruder temperatures can obtain multiple injection product.This injection product has good mechanical performance and processing characteristics.
Embodiment 4
(1) preparation of polyethylene three monomer soild-phase graft copolymers: in stainless steel cauldron, add new LDPE (film grade) (powder) 60 weight parts, monomer mixture 40 weight parts (AA, St and BA press mass ratio and mix at 5: 5: 1), initiator peroxidation phenyl-diformyl 1 weight part, add dimethylbenzene simultaneously as interfacial agent; Heated and stirred reaction under nitrogen protection, temperature is 100 ℃, reacts after 3 hours, with 60 ℃ of distilled water washs, suction filtration in 70 ℃ of dryings 40 hours, obtains polyethylene three monomer soild-phase graft copolymers in baking oven with product;
(2) with the waste and old LDPE pellet of 30 weight parts (melting index is 15g/10min under 190 ℃ and 2160g condition), the mixture of 70 weight part bamboo powder and rice chaff (proportioning is 50/50), 6 weight account polyethylenes, three monomer soild-phase graft copolymers, 6 weight part properties-correcting agent SBS, 1 weight part stearic acid pre-mixing in the universal high speed mixing machine, 50 ℃ of temperature, 20 minutes time, 200 rev/mins of rotating speeds;
(3) Preblend that mixes is joined in the general twin screw extruder of diameter 30mm and extrude, forcing machine driving screw rotating speed 80～100 changes 170～190 ℃ of extruder temperatures;
(4) extrude product through cooling, granulation, promptly get the LDPE Wood plastic composite.
(5) with above-mentioned gained Wood plastic composite and the HDPE plastics (melting index is 5g/10min) extruded by weight ratio compounding in 1: 1, promptly plastic on general injector, can obtain multiple injection product, extruder temperature is 140～190 ℃.This injection product has good mechanical performance and processing characteristics.
Embodiment 5
(1) preparation of polyethylene three monomer soild-phase graft copolymers: in stainless steel cauldron, add new LDPE (film grade) (powder) 60 weight parts, monomer mixture 40 weight parts (AA, St and BA press mass ratio and mix at 5: 5: 1), initiator azobisisobutyronitrile 3 weight parts, add dimethylbenzene simultaneously as interfacial agent; Heated and stirred reaction under nitrogen protection, temperature is 100 ℃, reacts after 3 hours, with 60 ℃ of distilled water washs, suction filtration in 70 ℃ of dryings 40 hours, obtains polyethylene three monomer soild-phase graft copolymers in baking oven with product;
(2) with the waste and old LLDPE pellet of 70 weight parts (melting index is 10g/10min under 190 ℃ and 2160g condition), the mixture (proportioning is 50/50) of useless tealeaf residue of 30 weight parts and rice chaff, 9 weight account polyethylenes, three monomer soild-phase graft copolymers, 3 weight part properties-correcting agent (EAA/EEA/EMA=1/1/1), 2 weight part processing aids (polyethylene wax/silicone oil=1/1) pre-mixing in the universal high speed mixing machine, 40 ℃ of temperature, 25 minutes time, 400 rev/mins of rotating speeds;
(3) Preblend that mixes is joined in the general twin screw extruder of diameter 30mm and extrude, forcing machine driving screw rotating speed 130～150 changes 150～190 ℃ of extruder temperatures;
(4) extrude product through cooling, granulation, promptly get the LDPE Wood plastic composite.
(5) to extrude the gained Wood plastic composite promptly plastic on general injector with above-mentioned, can obtain multiple injection product, 160～180 ℃ of extruder temperatures.This injection product has good mechanical performance and processing characteristics.
Embodiment 6
(1) preparation of polyethylene three monomer soild-phase graft copolymers: in stainless steel cauldron, add high density polyethylene(HDPE) (powder) 60 weight parts, monomer mixture 40 weight parts (maleic anhydride and glycidyl methacrylate are pressed mass ratio and mixed at 4: 6), initiator peroxidation phenyl-diformyl 3 weight parts, add dimethylbenzene simultaneously as interfacial agent; Heated and stirred reaction under nitrogen protection, temperature is 100 ℃, reacts after 3 hours, with 60 ℃ of distilled water washs, suction filtration in 70 ℃ of dryings 40 hours, obtains polyethylene three monomer soild-phase graft copolymers in baking oven with product;
(2) with the compound (HDPE/HIPS=50/50) of 60 weight part HDPE (is 8g/10min in melting index under 190 ℃ and the 2160g condition) and HIPS (melting index is 10g/10min under 190 ℃ and 2160g condition), 40 weight parts are through 80 purpose bagasses of drying treatment, 8 weight account polyethylenes, three monomer soild-phase graft copolymers, 4 weight part polyolefin elastomer POE, 2 weight part dioctyl phthalate (DOP) (DOP) pre-mixings in the universal high speed mixing machine, 60 ℃ of temperature, 20 minutes time, 250 rev/mins of rotating speeds;
(2) Preblend that mixes is joined in the general twin screw extruder of diameter 30mm and extrude, forcing machine driving screw rotating speed 80～100 changes 170～190 ℃ of extruder temperatures;
(3) extrude product through cooling, granulation, promptly get HIPS/ bagasse Wood plastic composite.
(4) extrude the moulding on general injector of gained Wood plastic composite with above-mentioned, can obtain multiple injection product, 150～200 ℃ of extruder temperatures.This injection product has good mechanical performance and processing characteristics.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. the preparation method of a wood plastic composite for injection is characterized in that: comprise the steps:
(1) with 30～70 weight part injection thermoplasticss, 30～70 weight part biomass fibers, 5～10 weight part polyolefine and multi-monomer solid-phase graft copolymer and 0.5～4 weight part processing aid pre-mixing in high-speed mixer, temperature is 30～60 ℃, time is 20～30min, and rotating speed is 50～500rpm;
(2) Preblend that step (1) is made joins in twin screw or the three-screw extruder and extrudes, forcing machine driving screw rotating speed 60～150rpm, 140～200 ℃ of extruder temperatures;
(3) extrude product through cooling, granulation, obtain wood plastic composite for injection.
2. preparation method according to claim 1 is characterized in that: add other properties-correcting agent of 0～10 weight part during the described pre-mixing of step (1); Described other properties-correcting agent is at least a in ethylene-ethyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-methyl acrylate multipolymer, polyolefin elastomer, terpolymer EP rubber, styrene-butadiene copolymer, Hydrogenated SBS multipolymer or the styrene-isoprene block copolymer.
3. preparation method according to claim 1, it is characterized in that: described injection thermoplastics melting index under 190 ℃ and 2160g condition is 2～45g/10min, at least a in high density polyethylene(HDPE), new LDPE (film grade), LLDPE, polypropylene, high-impact polystyrene or the acrylonitrile-styrene-butadienecopolymer.
4. preparation method according to claim 1 is characterized in that: described biomass fiber is at least a in wood powder, rice chaff, bamboo powder, tangerine bar, tealeaf residue or the bagasse.
5. preparation method according to claim 1 is characterized in that: described polyolefine and multi-monomer solid-phase graft copolymer are that the method that ZL00117390.1, name are called " preparation method of polyolefine and three monomer soild-phase graft copolymers and application thereof " and provide is prepared according to the patent No..
6. preparation method according to claim 1 is characterized in that: described processing aid is at least a in polyethylene wax, Poly Propylene Wax, silicone oil, stearic acid and soap salt or the dioctyl phthalate (DOP).
7. a wood plastic composite for injection is to make by each described preparation method of claim 1～6.
8. the application of the described wood plastic composite for injection of claim 7 in household articles, daily necessities, Automobile Products, toy articles for use, gardens decoration etc.
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