CN106977844A - A kind of environmentally friendly, fire-retardant PVC wood plastic composite material and preparation method thereof - Google Patents
A kind of environmentally friendly, fire-retardant PVC wood plastic composite material and preparation method thereof Download PDFInfo
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- 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
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- 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
- C08J9/04—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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- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- 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
- C08J2327/00—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
- C08J2327/02—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
- C08J2327/04—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
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
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- 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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
Abstract
The present invention discloses a kind of environmentally friendly, fire-retardant PVC wood plastic composite material and preparation method thereof.The composite is made using the raw material of following portions by weight：100 parts of Corvic；20~50 parts of modified wood powder；1~25 part of function raw material；5~10 parts of calcium carbonate；2~10 parts of stabilizer；1~5 part of zinc stearate；1~5 part of composite foamable agent；0.5~2 part of antioxidant；0.5~2 part of Tissuemat E.Wood plastic composite interior porosity prepared by the present invention is high, and functional mass is evenly distributed in system, is not had by resin-coating and preferably adsorbs poisonous volatile matter performance, formaldehyde absorbing amount can reach 1137 μ g/g, and ammonia gas absorption amount can reach 405.08mg/g；Functional mass isolation effect makes material have preferable fire resistance, and limited oxygen index can be up to 38.66, good flame retardation effect, and material mechanical performance is good, reaches mechanical property and the fire-protection rating requirement of house decorative material.
Description
Technical field
The present invention relates to a kind of environmentally friendly, fire-retardant PVC wood plastic composite material, more particularly to a kind of environmentally friendly, fire-retardant PVC
Wood plastic composite and preparation method thereof.
Background technology
Wood plastic composite integrates the advantage of timber and plastics, not only with outward appearance as natural timber, and
There is anti-corrosion, protection against the tide, Anti-moth-eating, dimensional stability is high, do not ftracture, not warpage, hardness is higher than pure plastics, can carry out two
Secondary or multiple processing is re-used, and the processing advantage with similar wood, the features such as being cut, be bonded, thus conduct
A kind of real green product has turned into generation modeling Dai Mu optimal selection.Wood plastic composite can be widely applied to logistics packaging,
The fields such as gardens, building, house ornamentation, furniture, particularly the application development of ornament materials is rapid indoors.Indoor living environment is people
A problem paying much attention to, and Conventional plate-type furniture and house decorative material can all discharge a certain amount of formaldehyde etc. poison gas
Body, has certain influence to the healthy of people, therefore, is discharged if exploitation is a kind of entirely without volatile organic matter, and can inhale
With malicious volatile organic matter, and with the wood plastic composite of good flame-retardance energy, there will be good market application foreground.
The wood plastic composite with the toxic volatile organics function such as formaldehyde adsorption is studied at present, mainly by adding
Plus adsorbent (such as activated carbon) makes wood plastic composite show certain environment purification ability.For example, Publication No.
CN102229729B patent of invention discloses a kind of wood plastic composite of adsorbable poison gas and preparation method thereof, and it utilizes wood
Powder and igelite are raw material, are equipped with related auxiliaries, and activated carbon is added after handling wood powder with silane coupler, pass through melting
Extrusion is made wood plastic composite, but this invention is not adsorbed the ability of poison gas to it and tested and assessed.
Fire resistance research to wood plastic composite focuses primarily upon halogen-free flame retardants.For example, Publication No.
CN104497607A patent of invention discloses a kind of halogen-free flame-retardant wood-plastic composite material and preparation method thereof, and it utilizes polyphosphoric acid
The compound of salt, hypophosphites and other fire retardants is hindered polyethylene, polypropylene base wood-plastic composite material as fire retardant
Combustion handle, its limited oxygen index (LOI) more than 30, but fire retardant mass percent 15%~40%, addition is larger.
The content of the invention
In order to overcome the shortcoming and deficiency of prior art, primary and foremost purpose of the invention is to provide a kind of environmentally friendly, fire-retardant
PVC wood plastic composite material.The toxic gases such as the adsorbable formaldehyde of the PVC wood plastic composite material, with good flame-retardance energy and mechanics
Performance.
Another object of the present invention is to provide the preparation method of above-mentioned environmentally friendly, fire-retardant PVC wood plastic composite material.
The purpose of the present invention is achieved through the following technical solutions：
A kind of environmentally friendly, fire-retardant PVC wood plastic composite material, is made using the raw material of following portions by weight：
It is preferred that, described environmentally friendly, fire-retardant PVC wood plastic composite material is made using the raw material of following portions by weight：
It is furthermore preferred that described environmentally friendly, fire-retardant PVC wood plastic composite material, is the raw material system using following portions by weight
：
Described Corvic is SG-5 type powder-type polyvinyl chloride；
Described modified wood powder is that one or more of mixtures in pine powder, Poplar Powder, fir powder connect through maleic anhydride
The PE modified product of branch；The molecular weight of the maleic anhydride grafted polyethylene is 10000~200000, grafting rate 2%~
4%；The moisture content 3%~10% of described modified wood powder, the mesh of particle diameter 80~120；
Described function raw material is one or both of diatomite, activated carbon, when being such as two kinds, according to diatomite and work
Property charcoal mass ratio be 1：2~2：1 mixes；The particle diameter of described function raw material is 80~200 mesh；
Described calcium carbonate is single precipitated calcium carbonate, and density is 2.3g/cm3~2.9g/cm3；
Described stabilizer is at least one of calcium zinc stabilizer, barium zinc stabilizer；
Described composite foamable agent is azodicarbonamide and zinc stearate according to 1：2~2：What 1 ratio was mixed answers
Foaming agent is closed, blowing temperature is 180 DEG C~190 DEG C；
Described antioxidant be in single phenol antioxidant, thio lipid antioxidant, composite antioxidant at least
It is a kind of；
The molecular weight of described Tissuemat E is 1400~8000；
A kind of preparation method of environmentally friendly, fire-retardant PVC wood plastic composite material, comprises the following steps：
(1) Corvic and stabilizer are taken, adds in high-speed mixer and mixes, temperature is 85 DEG C~95 DEG C, mixing
8min~10min, not discharging；
(2) modified wood powder, composite foamable agent, function raw material, calcium carbonate, polyethylene are put into high-speed mixer successively again
Wax, zinc stearate and antioxidant, mix 8min~10min, mixing temperature be 85 DEG C~95 DEG C, discharging cooling, obtain environmental protection,
Fire-retardant PVC wood plastic composite material；
In order to preferably realize the purpose of the present invention, also comprise the following steps：
(3) the mixed material of step (2) is blended through double screw extruder melting extrusion, by pelletizing after cooling by water,
After pellet is less than 3% through air dry oven drying to moisture content, pack；
(4) dried granules obtained by step (3) are put into horizontal injection press, through being molded acquisition standard batten.
The preparation method of described modified wood powder, comprises the following steps：
By 11：1~9：1 mass ratio weigh wood powder (one or more of mixtures in pine powder, Poplar Powder, fir powder) and
Maleic anhydride grafted polyethylene, mixing, is warming up to 85 DEG C~95 DEG C, batch mixing 10min~15min obtains modified wood powder.
The preparation method of described composite foamable agent, comprises the following steps：
By 1：2~2：1 mass ratio weighs azodicarbonamide and zinc stearate, will in the case where temperature is 70 DEG C~90 DEG C environment
Both mixing composition composite foamable agents.
The present invention has the following advantages and effect relative to prior art：
Wood plastic composite interior porosity prepared by the present invention is high, and functional mass is evenly distributed in system, do not set
Fat cladding, which has, preferably adsorbs poisonous volatile matter performance, and formaldehyde absorbing amount can reach 1137 μ g/g, and ammonia gas absorption amount can reach
405.08mg/g；Functional mass isolation effect makes material have preferable fire resistance, and limited oxygen index can be up to 38.66, fire-retardant effect
It is really good, and material mechanical performance is good, reaches mechanical property and the fire-protection rating requirement of house decorative material.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
The present invention mainly realizes present inventive concept using such scheme, but be not limited only to such scheme, every to use
The scheme of the central scope of the present invention is belonged among the scope that the present invention is protected.
Embodiment 1
(1) got the raw materials ready according to parts by weight proportioning：
(2) azodicarbonamide and zinc stearate of equal parts are weighed by weight mixed in the case where temperature is 80 DEG C of environment obtain
Obtain composite foamable agent；
(3) pine powder is weighed by weight：Maleic anhydride grafted polyethylene is 10：1 ratio quality adds high-speed mixer
Middle mixing, is warming up to 85 DEG C, batch mixing 10min~15min, discharging obtains modified wood powder；
(4) 100 parts of Corvics, 4 parts of calcium zinc stabilizers are weighed by weight, are added in high-speed mixer and are mixed, temperature
Spend for 85 DEG C, mix 8min~10min, not discharging；
(5) put into successively into high-speed mixer again 40 parts of modified wood powders, 5 parts of diatomite, 10 parts of calcium carbonate, 2 parts be combined
Foaming agent, 2 parts of Tissuemat Es, 2 parts of zinc stearates and 2 parts of BHT antioxidants, temperature are 85 DEG C, mixing
8min~10min, discharging cooling；
(6) the mixed material of step (5) is blended through double screw extruder melting extrusion, wherein the five of double screw extruder
Duan Wendu is 140 DEG C, 150 DEG C, 160 DEG C, 170 DEG C, 160 DEG C, and rotating speed is 20~30r/min；Pass through pelletizing after cooling by water, grain
Material is packed after being less than 3% through air dry oven drying to moisture content；
(7) dried granules obtained by step (6) are put into horizontal injection press, through being molded acquisition standard batten；Wherein it is molded
Three sections of temperature of machine are 190 DEG C, 185 DEG C, 185 DEG C.
Mechanical property and fire resistance difference the normative reference ASTM of PVC wood plastic composite material manufactured in the present embodiment
D7031-11 and GBT 2406.2-2009 are tested, and testing result is shown in Table 1, and formaldehyde adsorption property is shown in Table 2；Ammonia gas absorption
3 can be shown in Table.
Embodiment 2
The difference of the present embodiment and embodiment 1 is that diatomaceous mass fraction is 25 parts, and the PVC wood plastic of preparation is answered
The mechanical property and fire resistance testing result of condensation material are shown in Table 1, and formaldehyde adsorption property is shown in Table 2；Ammonia gas absorption performance is shown in Table 3.
Embodiment 3
The difference of the present embodiment and embodiment 1 is that function raw material is activated carbon (diatomaceous quality in embodiment 1
Number is 5 parts), the mechanical property and fire resistance testing result of the PVC wood plastic composite material of preparation are shown in Table 1, formaldehyde absorbing
2 can be shown in Table；Ammonia gas absorption performance is shown in Table 3.
Embodiment 4
The difference of the present embodiment and embodiment 2 is that function raw material is activated carbon (diatomaceous quality in embodiment 2
Number is 25 parts), the mechanical property and fire resistance testing result of the PVC wood plastic composite material of preparation are shown in Table 1, formaldehyde absorbing
2 can be shown in Table；Ammonia gas absorption performance is shown in Table 3.
Embodiment 5
The difference of the present embodiment and embodiment 1 is that function raw material is activated carbon and diatomaceous mixture (ratio
1：1) (diatomaceous mass fraction is 5 parts in embodiment 1), the mechanical property and anti-flammability of the PVC wood plastic composite material of preparation
Energy testing result is shown in Table 1, and formaldehyde adsorption property is shown in Table 2；Ammonia gas absorption performance is shown in Table 3.
Embodiment 6
The difference of the present embodiment and embodiment 2 is that function raw material is activated carbon and diatomaceous mixture (ratio
1：1) (diatomaceous mass fraction is 25 parts in embodiment 2), the mechanical property and anti-flammability of the PVC wood plastic composite material of preparation
Energy testing result is shown in Table 1, and formaldehyde adsorption property is shown in Table 2；Ammonia gas absorption performance is shown in Table 3.
Comparative example
The difference of this comparative example and embodiment 1 is that function material quality number is 0 part, and the PVC wood plastic of preparation is answered
The mechanical property and fire resistance testing result of condensation material are shown in Table 1, and formaldehyde adsorption property is shown in Table 2；Ammonia gas absorption performance is shown in Table 3.
Mechanical property, the limited oxygen index testing result of the PVC wood plastic composite material of table 1
| Comparative example | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Bending strength (MPa) | 82.34 | 83.17 | 80.66 | 83.09 | 75.47 | 83.15 |
| Composite bending modulus (MPa) | 4404.16 | 4195.15 | 4084.06 | 4714.93 | 4346.08 | 4546.65 |
| Impact strength (KJ/m2) | 16.86 | 19.48 | 16.05 | 19.75 | 17.81 | 19.35 |
| Tensile strength (MPa) | 46.95 | 47.31 | 43.51 | 47.96 | 44.55 | 47.48 |
| Limited oxygen index | 32.36 | 34.41 | 38.66 | 33.16 | 37.46 | 33.69 |
Note：Normative reference ASTM D7031-11, GBT 2406.2-2009
The PVC wood plastic composite material formaldehyde adsorption property testing result of table 2 (35 DEG C, 60h)
| Comparative example | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Adsorbance (μ g/g) | 607.88 | 723.98 | 1137.6 | 646.66 | 1235.6 | 697.91 |
The PVC wood plastic composite material ammonia gas absorption performance test results of table 3 (30 DEG C, 60h)
| Comparative example | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Adsorbance (mg/g) | 257.85 | 295.53 | 405.08 | 278.45 | 398.08 | 288.56 |
Testing result shows：
(1) the PVC wood plastic composite material mechanical property and fire resistance that prepared by the present invention are good, and wherein bending strength reaches
80.66~83.17MPa, composite bending modulus reaches 4084.06~4714.93MPa；Notch impact strength reaches 16.05~
19.75KJ/m2；Tensile strength reaches 43.51~47.96MPa；Limited oxygen index reaches 33~38, meets house decorative material
Defined fire-protection rating.
(2) PVC wood plastic composite material prepared by the present invention is due to foam structure, so with certain formaldehyde adsorption
Ability, and add diatomaceous material and show good formaldehyde absorbing ability, formaldehyde absorbing amount can reach 1235.6 μ g/
G, the adsorbance of ammonia can reach 405.08mg/g.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of environmentally friendly, fire-retardant PVC wood plastic composite material, it is characterised in that be made using the raw material of following portions by weight：
2. environmentally friendly, fire-retardant PVC wood plastic composite material according to claim 1, it is characterised in that：It is to use following weight
The raw material of number is made：
3. environmentally friendly, fire-retardant PVC wood plastic composite material according to claim 1, it is characterised in that：It is to use following weight
The raw material of number is made：
4. environmentally friendly, the fire-retardant PVC wood plastic composite material according to any one of claims 1 to 3, it is characterised in that：
Described modified wood powder is that one or more of mixtures in pine powder, Poplar Powder, fir powder are poly- through maleic anhydride grafting
Ethylene modified product；The molecular weight of the maleic anhydride grafted polyethylene is 10000~200000, grafting rate 2%~4%；Institute
The moisture content 3%~10% for the modified wood powder stated, the mesh of particle diameter 80~120.
5. environmentally friendly, the fire-retardant PVC wood plastic composite material according to any one of claims 1 to 3, it is characterised in that：
Described function raw material is one or both of diatomite, activated carbon, when being such as two kinds, according to diatomite and activated carbon
Mass ratio is 1：2~2：1 mixes；The particle diameter of described function raw material is 80~200 mesh.
6. environmentally friendly, the fire-retardant PVC wood plastic composite material according to any one of claims 1 to 3, it is characterised in that：
Described Corvic is SG-5 type powder-type polyvinyl chloride；
Described calcium carbonate is single precipitated calcium carbonate, and density is 2.3g/cm3~2.9g/cm3；
Described stabilizer is at least one of calcium zinc stabilizer, barium zinc stabilizer.
7. environmentally friendly, the fire-retardant PVC wood plastic composite material according to any one of claims 1 to 3, it is characterised in that：
Described composite foamable agent is azodicarbonamide and zinc stearate according to 1：2~2：The compound hair that 1 ratio is mixed
Infusion；
Described antioxidant is at least one of single phenol antioxidant, thio lipid antioxidant, composite antioxidant；
The molecular weight of described Tissuemat E is 1400~8000.
8. the preparation method of environmentally friendly, the fire-retardant PVC wood plastic composite material described in any one of claim 1~7, it is characterised in that
Comprise the following steps：
(1) Corvic and stabilizer are taken, adds in high-speed mixer and mixes, temperature is 85 DEG C~95 DEG C, mixes 8min
~10min, not discharging；
(2) again successively into high-speed mixer put into modified wood powder, composite foamable agent, function raw material, calcium carbonate, Tissuemat E,
Zinc stearate and antioxidant, mix 8min~10min, and mixing temperature is 85 DEG C~95 DEG C, and discharging cooling obtains environmental protection, resistance
The PVC wood plastic composite material of combustion.
9. the preparation method of environmentally friendly, fire-retardant PVC wood plastic composite material according to claim 8, it is characterised in that：Also wrap
Include
(3) the mixed material of step (2) is blended through double screw extruder melting extrusion, passes through pelletizing after cooling by water, pellet
After being less than 3% through air dry oven drying to moisture content, pack；
(4) dried granules obtained by step (3) are put into horizontal injection press, through being molded acquisition standard batten.
10. the preparation method of environmentally friendly, fire-retardant PVC wood plastic composite material according to claim 8 or claim 9, it is characterised in that：
The preparation method of described modified wood powder, comprises the following steps：
By 11：1~9：1 mass ratio weighs wood powder and maleic anhydride grafted polyethylene, mixing, be warming up to 85 DEG C~95 DEG C, batch mixing
10min~15min, obtains modified wood powder；
Described wood powder is one or more of mixtures in pine powder, Poplar Powder, fir powder.
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| CN108752963A (en) * | 2018-09-06 | 2018-11-06 | 浙江冠森新材料有限公司 | A kind of Wood plastic composite and preparation method thereof |
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| CN110183793A (en) * | 2019-05-29 | 2019-08-30 | 六盘水康博木塑科技有限公司 | A kind of decoration wood-plastic board and preparation method thereof |
| CN110951183A (en) * | 2019-11-05 | 2020-04-03 | 山东霞光集团有限公司 | Preparation method of wood-plastic composite material |
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| CN111117101A (en) * | 2019-11-28 | 2020-05-08 | 安徽霖园外新材料有限公司 | High-toughness high-flame-retardant PVC (polyvinyl chloride) wood-plastic composite material and preparation method thereof |
| CN113336995A (en) * | 2021-05-12 | 2021-09-03 | 湖北声荣再生资源利用有限公司 | PVC (polyvinyl chloride) foamed wood-plastic profile as well as preparation method and application thereof |
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| CN107603182A (en) * | 2017-08-30 | 2018-01-19 | 海南职业技术学院 | A kind of moisture resistance indoor hardware fitting of salt tolerant and preparation method thereof |
| CN107603182B (en) * | 2017-08-30 | 2019-12-03 | 海南职业技术学院 | A kind of moisture resistance indoor hardware fitting of salt tolerant and preparation method thereof |
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| CN108752963A (en) * | 2018-09-06 | 2018-11-06 | 浙江冠森新材料有限公司 | A kind of Wood plastic composite and preparation method thereof |
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| CN111117101A (en) * | 2019-11-28 | 2020-05-08 | 安徽霖园外新材料有限公司 | High-toughness high-flame-retardant PVC (polyvinyl chloride) wood-plastic composite material and preparation method thereof |
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| CN111040339A (en) * | 2019-12-27 | 2020-04-21 | 山东霞光集团有限公司 | Diatom ooze wood-plastic wallboard and preparation method thereof |
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