CN109263206A - A kind of co-extrusion wood plastic composite and preparation method thereof - Google Patents

A kind of co-extrusion wood plastic composite and preparation method thereof Download PDF

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Publication number
CN109263206A
CN109263206A CN201810855880.9A CN201810855880A CN109263206A CN 109263206 A CN109263206 A CN 109263206A CN 201810855880 A CN201810855880 A CN 201810855880A CN 109263206 A CN109263206 A CN 109263206A
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Prior art keywords
powder
extrusion
base
plant fiber
plastic composite
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CN201810855880.9A
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Inventor
赵悦英
杨明
王冬至
李素坤
化明志
李冲
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Shandong Xiaguang Group Co Ltd
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Shandong Xiaguang Group Co Ltd
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Priority to CN201810855880.9A priority Critical patent/CN109263206A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
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    • C08J9/0066—Use of inorganic compounding ingredients
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0085—Use of fibrous compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/552—Fatigue strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2351/04—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2427/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2497/00—Characterised by the use of lignin-containing materials
    • C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/322—Ammonium phosphate
    • C08K2003/323—Ammonium polyphosphate

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  • Chemical & Material Sciences (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of co-extrusion wood plastic composites, the surface layer including base and in base, and the base material includes PVC resin powder, and plant fiber handles powder, activated Calcium carbonate and auxiliary agent；The skin-material includes ASA resin, stabilizer, ultraviolet absorbing agent and light stabilizer, double screw extruder is respectively adopted in base and surface layer and single screw rod basis carries out co-extrusion, surface layer is extruded as ASA resin, the component of base forms low foaming wood-plastic formula, skin-material is by single screw rod fusion plastification, and base material passes through mold by the resynchronisation of twin-screw fusion plastification, by mold extrusion molding, finished surface obtained has the wearability and finish of co-extrusion ASA resin, and outdoor weathe resistance is excellent.

Description

A kind of co-extrusion wood plastic composite and preparation method thereof
Technical field
The present invention relates to wood plastic composite field, specially a kind of co-extrusion wood plastic composite and preparation method thereof.
Background technique
Wood plastic composite (Wood-PlasticComposites, WPC) is that domestic and international one kind being surging forward in recent years is new Type composite material, refers to using polyethylene, polypropylene and polyvinyl chloride etc., instead of common resin adhesive, with wood powder, rice husk, The useless plant fiber such as stalk is mixed into new wood materials, then through the plastic processings such as extruding, molding, injection moulding, production Plate or profile out, are mainly used for the industries such as building materials, furniture, logistics packaging, have zero formaldehyde, waterproof, fire-retardant, Anti-moth-eating, Acid and alkali-resistance, can 100% the advantages that recycling, for texture as solid wood, every mechanical performance is suitable with hardwood, can follow closely, bore, Saw, plane, paint, are unlikely to deform, are cracked, and meet the industry development opinion of national industrial policies and national waste resource comprehensive utilization, It is typical " section material generation wood " novel green material.
The natural polymer composite wood that wood materials are made of cellulose, hemicellulose, lignin and various extracts Material, since it is a kind of unevenly anisotropic material, therefore interfacial characteristics are sufficiently complex.Due to forming the fibre of wood materials Go out in the main components such as dimension element, hemicellulose and lignin containing a large amount of polar hydroxyl groups and phenolic hydroxyl group functional group, surface exhibits Therefore very strong chemical polarity in carrying out wood fibre-plastic body chain timbers plastic composite materials development process, needs to solve Greatest problem be how to make between hydrophilic polarity wood surface and hydrophobic non-polar plastic substrate interface have it is good Compatibility, simultaneously because there is more unstable α-Cl in wood plastic composite in PVC molecular structure, therefore the modeling of PVC sill is multiple The weatherability of condensation material is poor, is easy to be caused the rubescent equal metachromatisms that turn to be yellow by ultraviolet light destruction in sunlight outdoors.
Such as application No. is a kind of composition, wood plastic composite of CN200810218375.X and wood plastic composite and The solution that preparation method provides be include wood powder, resin, compatilizer, reinforcing agent and coupling agent, the compatilizer is rubber The copolymer of glue and maleic anhydride, reinforcing agent are alkali magnesium sulfate crystal whisker and/or glass fibre, pass through the copolymer of maleic anhydride The grafting rate for being modified the memory group on molecule is lower, and autohemagglutination is easy to produce in modifying process, influences it and is modified effect Fruit.
Summary of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of co-extrusion wood plastic composite and its preparation side Method can effectively solve the problem of background technique proposes.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of co-extrusion wood plastic composite and preparation method thereof, the surface layer including base and in base, the base Layer material includes PVC resin powder, and plant fiber handles powder, activated Calcium carbonate and auxiliary agent；The skin-material include ASA resin, Stabilizer, ultraviolet absorbing agent and light stabilizer.
Further, by mass percentage, PVC resin powder 30-50 parts；15-30 parts of plant fiber powder；Activated Calcium carbonate 10-20 parts, 88-92 parts of ASA resin, 2-5 parts of stabilizer, 2.5-3.0 parts of ultraviolet absorbing agent and 3-4 parts of light stabilizer.
Further, wherein plant fiber powder includes but is not limited to wood powder, bamboo powder, Poplar Powder and straw powder, and auxiliary agent includes 2-6 parts of stabilizer；1-3 parts of lubricant；1-5 parts of foaming agent；2-4 parts of coupling agent.
Further, wherein plant fiber processing powder includes plant fiber powder and chopped carbon fiber, coupling intermixture, nanometer Intermixture, ammonium polyphosphate and paraffin wax lubricants, and it is layered with polylactic acid melting mixing, and wherein nanometer intermixture includes nanometer SiO2With nitrogen phosphorus fire retardant, wherein coupling intermixture include PP-g-MAH, silane coupling agent and titanate coupling agent.
A kind of co-extrusion wood plastic composite and preparation method thereof, it is characterised in that: include the following steps
S100, it is mixed by the weighed ASA resin of surface layer component, ultraviolet absorbing agent, light stabilizer, while pressing base Layer component mixes weighed polyvinyl chloride resin, plant fiber processing powder, activated Calcium carbonate, auxiliary agent；
In S200, the component merging that surface layer is mixed but the hopper of screw extruder, the group that base is mixed is split Enter in the hopper of double screw extruder；
S300, single screw extrusion machine and double screw extruder synchronous working, the fusion plastification product of surface layer and base is led to Cross extrusion die setting；
S400, setting cooling by mode of traction, cutting, form coextrusion wood plastic composite.
Further, in S100, surface layer component and base's component is placed in 105~120 ° of temperature environment and mixed 2~3h, in S300, the barrel temperature of single screw extrusion machine is 170~240 °, and screw speed is 3~10r/min, twin-screw The barrel temperature of extruder is 180~200 °, and screw speed is 5~8r/min.
Further, in S100, plant fiber will be passed through before plant fiber handles powder and polylactic acid melting mixing Powder and chopped carbon fiber, coupling agent, nanometer intermixture, ammonium polyphosphate and paraffin wax lubricants carry out mixing shape with high-speed mixer Powder is handled at plant fiber, the plant fiber processing powder and polylactic acid of formation carry out melting mixing, by the plant fiber after mixing Processing powder carries out weighing and takes part.
Further, plant fiber can be handled to powder in double screw extruder and single screw extrusion machine fusion plastification, added Enter polylactic acid to be kneaded, and increase the path length between double screw extruder fusion plastification product and extrusion die, together When the incorporation time of base extended into 30min.
Further, wherein ammonium polyphosphate uses standard to be greater than 900 for the degree of polymerization, and phosphorus content is in 25%-26%, nitrogen content 9%~10%, and carry out the 5% of nitrogen and phosphorus content by the nitrogen phosphorus fire retardant in nanometer intermixture and supplement, and the room of ammonium polyphosphate Warm solubility is less than or equal to 5.2g/L.
Further, pass through plant fiber powder and chopped carbon fiber, coupling agent, nanometer intermixture and paraffin wax lubricants Be mixed to form plant fiber processing powder with high-speed mixer need to dry in 90 °~100 ° of temperature environment to 2.0% Moisture content, then add ammonium polyphosphate and mixed.
Compared with prior art, the beneficial effects of the present invention are:
(1) base of wood plastic composite of the invention and surface layer be respectively adopted double screw extruder and single screw rod basis into Row co-extrusion, surface layer are extruded as ASA resin, and the component of base forms low foaming wood-plastic formula, and skin-material is melted by single screw rod Plasticizing, base material pass through mold, by mold extrusion molding, assembled watch mask obtained by the resynchronisation of twin-screw fusion plastification There are the wearability and finish of co-extrusion ASA resin, and outdoor weathe resistance is excellent.
(2) plant fiber powder and chopped carbon fiber, idol also are carried out by handling powder to plant fiber in base in the present invention Join intermixture, nanometer intermixture, ammonium polyphosphate and paraffin wax lubricants, and the pretreatment with polylactic acid melting mixing stratification, makes Plant fiber processing powder has good initial characteristic in the mixed process in later period again, its resistance to height is enhanced by chopped carbon fiber Warm nature, rub resistance and good tensile strength characteristic, while plant fiber is carried out by nanometer intermixture and polylactic acid ammonium The grafting on surface layer is handled, to be modified, is provided its anti-flammability, is also improved bonding row and the heat flow of base and surface Property, there is good associativity during fusion plastification.
Detailed description of the invention
Fig. 1 is wood plastic composite structure chart of the invention；
Fig. 2 is wood plastic composite preparation flow figure of the invention；
Figure label
1- base；The surface layer 2-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of co-extrusion wood plastic composites, the table including base and in base Layer, the base material include PVC resin powder, and plant fiber handles powder, activated Calcium carbonate and auxiliary agent；The skin-material includes ASA resin, stabilizer, ultraviolet absorbing agent and light stabilizer.
By mass percentage, PVC resin powder 30-50 parts；15-30 parts of plant fiber powder；10-20 parts of activated Calcium carbonate, 88-92 parts of ASA resin, 2-5 parts of stabilizer, 2.5-3.0 parts of ultraviolet absorbing agent and 3-4 parts of light stabilizer.
Wherein plant fiber powder includes but is not limited to wood powder, bamboo powder, Poplar Powder and straw powder, and auxiliary agent includes stabilizer 2-6 Part；1-3 parts of lubricant；1-5 parts of foaming agent；2-4 parts of coupling agent.
Wherein plant fiber processing powder includes plant fiber powder and chopped carbon fiber, coupling intermixture, nanometer intermixture, gathers Ammonium phosphate and paraffin wax lubricants, and it is layered with polylactic acid melting mixing, and wherein nanometer intermixture includes Nano-meter SiO_22With nitrogen phosphorus Fire retardant, wherein coupling intermixture includes PP-g-MAH, silane coupling agent and titanate coupling agent.
A kind of co-extrusion wood plastic composite and preparation method thereof, it is characterised in that: include the following steps
S100, it is mixed by the weighed ASA resin of surface layer component, ultraviolet absorbing agent, light stabilizer, while pressing base Layer component mixes weighed polyvinyl chloride resin, plant fiber processing powder, activated Calcium carbonate, auxiliary agent；
In S200, the component merging that surface layer is mixed but the hopper of screw extruder, the group that base is mixed is split Enter in the hopper of double screw extruder；
S300, single screw extrusion machine and double screw extruder synchronous working, the fusion plastification product of surface layer and base is led to Cross extrusion die setting；
S400, setting cooling by mode of traction, cutting, form coextrusion wood plastic composite.
In S100, surface layer component and base's component are placed in 2~3h of mixing in 105~120 ° of temperature environment, In S300, the barrel temperature of single screw extrusion machine is 170~240 °, and screw speed is 3~10r/min, double screw extruder Barrel temperature is 180~200 °, and screw speed is 5~8r/min.
In S100, by plant fiber powder and it will be chopped before plant fiber handles powder and polylactic acid melting mixing Carbon fiber, coupling agent, nanometer intermixture, ammonium polyphosphate and paraffin wax lubricants are carried out being mixed to form plant fibre with high-speed mixer Dimension processing powder, formation plant fiber processing powder and polylactic acid carry out melting mixing, by after mixing plant fiber handle powder into Row weighing takes part.
Also by handling plant fiber in base, powder carries out plant fiber powder and chopped carbon fiber, coupling mix in the present invention Mixture, nanometer intermixture, ammonium polyphosphate and paraffin wax lubricants, and the pretreatment with polylactic acid melting mixing stratification, so that planting Fibres handle powder has good initial characteristic in the mixed process in later period again, enhances its high temperature resistant by chopped carbon fiber Property, rub resistance and good tensile strength characteristic, while plant fiber table is carried out by nanometer intermixture and polylactic acid ammonium The grafting processing of layer, to be modified, provides its anti-flammability, also improves bonding row and the heat flow of base and surface Property, there is good associativity during fusion plastification.
Can by plant fiber handle powder in double screw extruder and single screw extrusion machine fusion plastification, be added polylactic acid into Row is kneaded, and increases the path length between double screw extruder fusion plastification product and extrusion die, while by base Incorporation time extends 30min.
It is that the degree of polymerization is greater than 900 that wherein ammonium polyphosphate, which uses standard, phosphorus content in 25%-26%, nitrogen content 9%~ 10%, and carry out the 5% of nitrogen and phosphorus content by the nitrogen phosphorus fire retardant in nanometer intermixture and supplement, and the room-temperature dissolution of ammonium polyphosphate Degree is less than or equal to 5.2g/L.
Pass through plant fiber powder and chopped carbon fiber, coupling agent, nanometer intermixture and paraffin wax lubricants mixed at high speed Machine be mixed to form plant fiber processing powder and need to dry in 90 °~100 ° of temperature environment to 2.0% moisture content, then adds Addition polymerization ammonium phosphate is mixed.
Double screw extruder is respectively adopted in the base of wood plastic composite of the invention and surface layer and single screw rod basis carries out Co-extrusion, surface layer are extruded as ASA resin, and the component of base forms low foaming wood-plastic formula, and skin-material is melted by single screw rod and moulded Change, base material is by the resynchronisation of twin-screw fusion plastification by mold, and by mold extrusion molding, finished surface obtained has The wearability and finish of co-extrusion ASA resin, and outdoor weathe resistance is excellent.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.

Claims (10)

1. a kind of co-extrusion wood plastic composite, including base (1) and the surface layer (2) being located on base (1), it is characterised in that: The base material includes PVC resin powder, and plant fiber handles powder, activated Calcium carbonate and auxiliary agent；The skin-material includes ASA Resin, stabilizer, ultraviolet absorbing agent and light stabilizer.
2. a kind of co-extrusion wood plastic composite according to claim 1, it is characterised in that: by mass percentage, PVC tree 30-50 parts of cosmetics；15-30 parts of plant fiber powder；10-20 parts of activated Calcium carbonate, 88-92 parts of ASA resin, 2-5 parts of stabilizer, purple 2.5-3.0 parts and light stabilizer 3-4 parts of ultraviolet absorbers.
3. a kind of co-extrusion wood plastic composite according to claim 1, it is characterised in that: wherein plant fiber powder include but It is not limited to wood powder, bamboo powder, Poplar Powder and straw powder, auxiliary agent includes 2-6 parts of stabilizer；1-3 parts of lubricant；1-5 parts of foaming agent；It is even Agent 2-4 parts of connection.
4. a kind of co-extrusion wood plastic composite according to claim 1, it is characterised in that: wherein plant fiber handles powder packet Plant fiber powder and chopped carbon fiber, coupling intermixture, nanometer intermixture, ammonium polyphosphate and paraffin wax lubricants are included, and and poly- Lactic acid melting mixing stratification, wherein nanometer intermixture includes Nano-meter SiO_22With nitrogen phosphorus fire retardant, wherein coupling intermixture include PP- G-MAH, silane coupling agent and titanate coupling agent.
5. a kind of preparation method of co-extrusion wood plastic composite, it is characterised in that: include the following steps
S100, it is mixed by the weighed ASA resin of surface layer component, ultraviolet absorbing agent, light stabilizer, while pressing base's group Divide and mixes weighed polyvinyl chloride resin, plant fiber processing powder, activated Calcium carbonate, auxiliary agent；
In S200, the component merging that surface layer is mixed but the hopper of screw extruder, the component that base is mixed is placed in double In the hopper of screw extruder；
S300, single screw extrusion machine and double screw extruder synchronous working, by the fusion plastification product of surface layer and base by squeezing Mold shapes out；
S400, setting cooling by mode of traction, cutting, form coextrusion wood plastic composite.
6. a kind of preparation method of co-extrusion wood plastic composite according to claim 5, it is characterised in that: in S100, Surface layer component and base's component are placed in 2~3h of mixing in 105~120 ° of temperature environment, in S300, single screw rod is squeezed out The barrel temperature of machine is 170~240 °, and screw speed is 3~10r/min, the barrel temperature of double screw extruder is 180~ 200 °, screw speed is 5~8r/min.
7. a kind of preparation method of co-extrusion wood plastic composite according to claim 5, it is characterised in that: in S100, Plant fiber powder and chopped carbon fiber, coupling agent, nanometer will be passed through before plant fiber handles powder and polylactic acid melting mixing Intermixture, ammonium polyphosphate and paraffin wax lubricants are carried out being mixed to form plant fiber processing powder, the plant of formation with high-speed mixer Fibres handle powder and polylactic acid carries out melting mixing, and the plant fiber processing powder after mixing is carried out weighing and takes part.
8. a kind of preparation method of co-extrusion wood plastic composite according to claim 7, it is characterised in that: can be by plant fibre Dimension processing powder is added polylactic acid and is kneaded in double screw extruder and single screw extrusion machine fusion plastification, and increases double Path length between screw extruder fusion plastification product and extrusion die, while the incorporation time of base is extended into 30min.
9. a kind of preparation method of co-extrusion wood plastic composite according to claim 7, it is characterised in that: wherein polyphosphoric acid Ammonium uses standard to be greater than 900 for the degree of polymerization, and phosphorus content passes through nanometer intermixture in 25%-26%, nitrogen content 9%~10% In nitrogen phosphorus fire retardant carry out nitrogen and phosphorus content 5% supplement, and the room temperature solubility of ammonium polyphosphate be less than or equal to 5.2g/L.
10. a kind of preparation method of co-extrusion wood plastic composite according to claim 7, it is characterised in that: pass through plant Fiber powder and chopped carbon fiber, coupling agent, nanometer intermixture and paraffin wax lubricants are carried out being mixed to form plant with high-speed mixer Fibres processing powder need to be dried in 90 °~100 ° of temperature environment to 2.0% moisture content, then add ammonium polyphosphate and mixed It closes.
CN201810855880.9A 2018-07-31 2018-07-31 A kind of co-extrusion wood plastic composite and preparation method thereof Pending CN109263206A (en)

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CN110103542A (en) * 2019-05-21 2019-08-09 太仓旭莱自动化机械有限公司 A kind of thermal-insulating type co-extrusion wood moulding carbon fiber composite board
CN110670839A (en) * 2019-10-24 2020-01-10 安徽森泰木塑科技地板有限公司 Foamed floor with wood texture
CN111070831A (en) * 2019-12-13 2020-04-28 华之杰塑料建材有限公司 High-heat-preservation, heat-insulation, sound-insulation and weather-resistant PVC-U sectional material, and preparation method and application thereof
CN112759857A (en) * 2020-12-24 2021-05-07 金发科技股份有限公司 ASA (acrylonitrile styrene acrylate) resin co-extrusion PVC (polyvinyl chloride) -based wood-plastic composite material as well as preparation method and application thereof
CN112936923A (en) * 2021-01-28 2021-06-11 南京聚新锋新材料有限公司 Environment-friendly co-extruded wood manufacturing method
CN113105701A (en) * 2021-04-09 2021-07-13 长兴光宏新材料科技有限公司 Preparation method of PVC/bagasse composite material
CN114685926A (en) * 2022-04-19 2022-07-01 安徽科居新材料科技有限公司 ASA (acrylonitrile styrene acrylate) coated PVC (polyvinyl chloride) wood-plastic co-extruded section and preparation method thereof
CN115304874A (en) * 2022-08-12 2022-11-08 五行科技股份有限公司 Special profile for repairing special-shaped advancing type spiral winding and preparation method thereof

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110103542A (en) * 2019-05-21 2019-08-09 太仓旭莱自动化机械有限公司 A kind of thermal-insulating type co-extrusion wood moulding carbon fiber composite board
CN110670839A (en) * 2019-10-24 2020-01-10 安徽森泰木塑科技地板有限公司 Foamed floor with wood texture
WO2021077509A1 (en) * 2019-10-24 2021-04-29 安徽森泰木塑科技地板有限公司 Foam floorboard with wood texture
CN111070831A (en) * 2019-12-13 2020-04-28 华之杰塑料建材有限公司 High-heat-preservation, heat-insulation, sound-insulation and weather-resistant PVC-U sectional material, and preparation method and application thereof
CN111070831B (en) * 2019-12-13 2021-10-12 华之杰塑料建材有限公司 High-heat-preservation, heat-insulation, sound-insulation and weather-resistant PVC-U sectional material, and preparation method and application thereof
CN112759857A (en) * 2020-12-24 2021-05-07 金发科技股份有限公司 ASA (acrylonitrile styrene acrylate) resin co-extrusion PVC (polyvinyl chloride) -based wood-plastic composite material as well as preparation method and application thereof
CN112759857B (en) * 2020-12-24 2022-12-06 金发科技股份有限公司 ASA (acrylonitrile styrene acrylate) resin co-extrusion PVC (polyvinyl chloride) -based wood-plastic composite material as well as preparation method and application thereof
CN112936923A (en) * 2021-01-28 2021-06-11 南京聚新锋新材料有限公司 Environment-friendly co-extruded wood manufacturing method
CN113105701A (en) * 2021-04-09 2021-07-13 长兴光宏新材料科技有限公司 Preparation method of PVC/bagasse composite material
CN113105701B (en) * 2021-04-09 2023-12-12 义乌市华彪包装有限公司 Preparation method of PVC/bagasse composite material
CN114685926A (en) * 2022-04-19 2022-07-01 安徽科居新材料科技有限公司 ASA (acrylonitrile styrene acrylate) coated PVC (polyvinyl chloride) wood-plastic co-extruded section and preparation method thereof
CN115304874A (en) * 2022-08-12 2022-11-08 五行科技股份有限公司 Special profile for repairing special-shaped advancing type spiral winding and preparation method thereof

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Application publication date: 20190125