CN117586571A - Preparation method of PVC/HDPE bamboo wood plastic composite material - Google Patents
Preparation method of PVC/HDPE bamboo wood plastic composite material Download PDFInfo
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- CN117586571A CN117586571A CN202311670927.1A CN202311670927A CN117586571A CN 117586571 A CN117586571 A CN 117586571A CN 202311670927 A CN202311670927 A CN 202311670927A CN 117586571 A CN117586571 A CN 117586571A
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 55
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 55
- 241001330002 Bambuseae Species 0.000 title claims abstract description 55
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 55
- 239000011425 bamboo Substances 0.000 title claims abstract description 55
- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 50
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 title claims abstract description 41
- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 30
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 53
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 53
- 239000000843 powder Substances 0.000 claims abstract description 50
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000002023 wood Substances 0.000 claims abstract description 40
- 239000003063 flame retardant Substances 0.000 claims abstract description 34
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 32
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229960003638 dopamine Drugs 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 18
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 18
- 239000003963 antioxidant agent Substances 0.000 claims description 15
- 230000003078 antioxidant effect Effects 0.000 claims description 15
- 235000006708 antioxidants Nutrition 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- 229920001577 copolymer Polymers 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 9
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 9
- 230000003712 anti-aging effect Effects 0.000 claims description 9
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 9
- 235000013539 calcium stearate Nutrition 0.000 claims description 9
- 239000008116 calcium stearate Substances 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 229940057995 liquid paraffin Drugs 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 9
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 8
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 8
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims description 8
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 8
- 238000006116 polymerization reaction Methods 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 229910021382 natural graphite Inorganic materials 0.000 claims description 6
- -1 phosphotriester Chemical compound 0.000 claims description 6
- 239000012286 potassium permanganate Substances 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 5
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 3
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 3
- 239000007983 Tris buffer Substances 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 229960001149 dopamine hydrochloride Drugs 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 3
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 3
- 229910000043 hydrogen iodide Inorganic materials 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 3
- 239000001226 triphosphate Substances 0.000 claims description 3
- 235000011178 triphosphate Nutrition 0.000 claims description 3
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 claims description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 3
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- VONWDASPFIQPDY-UHFFFAOYSA-N dimethyl methylphosphonate Chemical compound COP(C)(=O)OC VONWDASPFIQPDY-UHFFFAOYSA-N 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 abstract description 6
- 239000004033 plastic Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 239000002216 antistatic agent Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000004088 foaming agent Substances 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 206010000060 Abdominal distension Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000024330 bloating Diseases 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920001600 hydrophobic polymer Polymers 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- YACKEPLHDIMKIO-UHFFFAOYSA-N methylphosphonic acid Chemical compound CP(O)(O)=O YACKEPLHDIMKIO-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the field of bamboo-wood-plastic composite material preparation, and particularly relates to a preparation method of a PVC/HDPE bamboo-wood-plastic composite material, which comprises the following steps: s1: preparing reduced graphene oxide; s2: preparing dopamine modified bamboo wood powder; s3: weighing 20-50 parts of PVC polyvinyl chloride and 80-50 parts of HDPE high-density polyethylene, and improving the compatibility and interface effect between the bamboo wood powder and a plastic substrate by utilizing the amphiphilic modified bamboo wood powder of dopamine, so that the mechanical property of the composite material is improved; by adding the reduced graphene oxide antistatic material, the surface resistance of the material is reduced, and simultaneously, the flame retardant is added, so that the flame retardant property of the composite material is effectively improved, the blending modification of PVC and HDPE improves the processability and comprehensive performance of PVC, and the flame retardant property of HDPE can also be improved. The finally prepared environment-friendly bamboo-wood-plastic composite material has good mechanical property, flame retardant property, processability and antistatic property.
Description
Technical Field
The invention belongs to the field of bamboo-wood-plastic composite material preparation, and in particular relates to a preparation method of a PVC/HDPE bamboo-wood-plastic composite material.
Background
Along with the national implementation of the 'double carbon' strategic targets, green low-carbon life is advocated, the application of new materials with environmental protection and low carbon in the home industry is increasingly emphasized, wood is one of the most widely applied natural resources, and the demand of the wood is linearly increased, wherein the bamboo-wood composite material is taken as an ideal new material for replacing wood and plastic, and the wood-wood composite material has the advantages of corrosion resistance, moth resistance, water resistance, moisture resistance, wear resistance, flame retardance, energy conservation, environmental protection, recycling, strong mechanical property and the like, and the prospect is good at home and abroad.
The bamboo-wood-plastic composite material takes bamboo-wood fiber materials and thermoplastic plastics as main raw materials, and is a novel composite material which is manufactured by adopting a forming mode such as melting, compounding, extrusion or compression molding, and the like, the material has the dual characteristics of the bamboo-wood materials and plastics, and the bamboo-wood-plastic composite material has the performance advantages of being planable, sawable, nailable, drillable, water-soaking, bloating-proof, dry, crack-proof, moth-proof, corrosion-resistant, nontoxic and tasteless, can be recycled, and is an environment-friendly type environment-friendly material which is a famous and important material.
The traditional bamboo-wood-plastic composite material product has the problems of poor compatibility, untight combination and unstable quality among raw materials, and the factors influencing the product are mainly that in the bamboo-wood-plastic composite material, bamboo powder is hydrophilic plant fiber, thermoplastic base material is hydrophobic polymer, so that the compatibility of the bamboo powder and the thermoplastic base material is poor, the interfacial bonding force is weak, and the mechanical property and the processing property of the bamboo-wood-plastic composite material product are seriously influenced, but most of the bamboo-wood-plastic composite material products do not modify or fill wood powder, such as minerals as calcium carbonate, talcum powder and the like, the wood powder content is less, and the prepared profile becomes brittle after the wood powder is blended with plastic, so that the tensile strength and the impact strength are greatly reduced.
Therefore, the invention provides a preparation method of the PVC/HDPE bamboo wood plastic composite material.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a preparation method of a PVC/HDPE bamboo wood plastic composite material, which comprises the following steps:
s1: preparing reduced graphene oxide;
s2: preparing dopamine modified bamboo wood powder;
s3: weighing 20-50 parts of PVC polyvinyl chloride, 80-50 parts of HDPE high-density polyethylene, wherein the total weight of the PVC polyvinyl chloride and the HDPE high-density polyethylene is 100 parts, the weight of dopamine modified bamboo wood powder is 30-60 parts, the weight of reduced graphene oxide is 1-10 parts, the weight of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B) is 3-8 parts, the weight of liquid paraffin is 1.5 parts, the weight of calcium stearate/zinc is 3-6 parts, the weight of basvuv-234 anti-aging agent is 0.7 part, the weight of NaHCO3 anti-oxidant is 2 parts, the weight of antioxidant is 0.5-2 parts, the weight of halogen-free flame retardant ammonium polyphosphate (APP, the polymerization degree is 1000-4000) and the weight of flame retardant synergist is 2-8 parts, and uniformly mixing to obtain a mixture;
s4: and (3) extruding and granulating the mixture obtained in the step (S3) by using a double-screw extruder to obtain the dopamine modified reduced graphene oxide PVC composite material.
Preferably, the compatibilizer in S3 is one of a vinyl chloride-butyl acrylate copolymer, MAH-g-PE maleic anhydride grafted PE and CPE, the antioxidant is basf Irganox1010, the flame retardant synergist comprises two organic and inorganic substances, the inorganic substances are one or more selected from magnesium hydroxide, aluminum hydroxide, zinc borate, antimony trioxide, zinc oxide and calcium powder, the organic substances are one or more selected from triphenyl phosphate, phosphotriester, triphosphate, phosphotriester and methylphosphonate, and the ratio of the flame retardant to the flame retardant synergist is 4:1.
preferably, the twin-screw extruder in the step S4 comprises six temperature areas which are sequentially arranged, wherein the temperature of the first area is 140 ℃, the temperature of the second area is 170 ℃, the temperature of the third area is 175 ℃, the temperature of the fourth area is 180 ℃, the temperature of the fifth area is 180 ℃, the temperature of the sixth area is 175 ℃, the temperature of a head of the twin-screw extruder is 175 ℃, and the rotating speed of a screw is 200-280 r/min.
Preferably, the preparation of the reduced graphene oxide in S1 includes the following steps:
s11: gradually adding 2g of flaky natural graphite powder into cooled concentrated sulfuric acid;
s12: 12g of potassium permanganate and 1.2g of sodium nitrate are gradually added under stirring to be mixed;
s13: cooling for 3 hours at a temperature lower than 10 ℃ after the completion of the mixing; after cooling, heating to 35 ℃ again and continuing stirring for 45 minutes to obtain a mixture;
s14: 220 ml of deionized water is added into the mixture obtained in the step S13 and heated to 95 ℃, and after the color of the suspension starts to change from black to brown, 5% hydrogen peroxide solution is added to remove excessive potassium permanganate until the color of the mixture changes from dark brown to golden yellow;
s15: obtaining a mixed sample through centrifugation;
s16: washing with deionized water for several times, dispersing for 1 hour by ultrasonic wave, and adding hydrazine hydrate or tetrabutyl amine hydroxide or hydrogen iodide serving as a reducing agent into the graphene oxide solution to obtain a reduced graphene oxide solution.
Preferably, in S11, after adding the natural graphite powder to the cooled concentrated sulfuric acid, rapid vigorous stirring is required for 50 minutes.
Preferably, the mass of the reducing agent in the step S16 is 20-50 times of that of the graphene oxide, and the reducing agent is added and heated to boil for reflux reaction for 4-12 hours.
Preferably, the preparation of the dopamine modified bamboo wood powder in the S2 comprises the following steps:
s21: soaking untreated bamboo powder in 5% sodium hydroxide solution at room temperature for 24 hr, washing with water, and soaking in 2% acetic acid solution for 24 hr for neutralization;
s22: filtering and collecting the neutralized bamboo powder, and drying the bamboo powder in an air oven at 65 ℃ for 48 hours;
s23: dispersing dried bamboo wood powder in water, regulating the pH value to about 8.5 by using a tris buffer solution, then adding dopamine hydrochloride, and stirring the mixture at room temperature of 25 ℃ for reaction for 24 hours to obtain a mixed solution;
s24: filtering the mixed solution, and washing until the water becomes neutral and colorless;
s25: drying in an air oven at 100 ℃ for 48 hours, and taking out to obtain the dopamine modified bamboo wood powder.
Preferably, the concentration of the bamboo wood powder in the water in S23 is: 150mg g -1 The concentration of dopamine in water is: 0.3-1 mg.g -1 。
The beneficial effects of the invention are as follows:
1. according to the preparation method of the PVC/HDPE bamboo wood plastic composite material, the amphipathy of dopamine is utilized to modify the bamboo wood powder, the compatibility and the interface effect between the bamboo wood powder and a plastic substrate are improved, and the mechanical property of the composite material is improved; by adding the reduced graphene oxide antistatic material, the surface resistance of the material is reduced, and simultaneously, the flame retardant is added, so that the flame retardant property of the composite material is effectively improved, the blending modification of PVC and HDPE improves the processability and comprehensive performance of PVC, and the flame retardant property of HDPE can also be improved. The finally prepared environment-friendly bamboo-wood-plastic composite material has good mechanical property, flame retardant property, processability and antistatic property.
2. According to the preparation method of the PVC/HDPE bamboo wood plastic composite material, the bamboo wood powder modified by adding the dopamine, the reduced graphene oxide and the halogen-free flame retardant APP are adopted, the PVC and HDPE are blended to prepare the bamboo wood plastic composite material, any organic solvent is not used in the whole preparation process, radiation crosslinking is not needed, the preparation method is environment-friendly, the preparation process is simple to operate, the cost is low, and industrial production is easy to realize.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a graph of test results in the present invention;
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1, the preparation method of the PVC/HDPE bamboo wood plastic composite material provided by the embodiment of the invention comprises the following steps:
s1: preparing reduced graphene oxide;
s2: preparing dopamine modified bamboo wood powder;
s3: weighing 20-50 parts of PVC polyvinyl chloride, 80-50 parts of HDPE high-density polyethylene, wherein the total weight of the PVC polyvinyl chloride and the HDPE high-density polyethylene is 100 parts, the weight of dopamine modified bamboo wood powder is 30-60 parts, the weight of reduced graphene oxide is 1-10 parts, the weight of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B) is 3-8 parts, the weight of liquid paraffin is 1.5 parts, the weight of calcium stearate/zinc is 3-6 parts, the weight of basvuv-234 anti-aging agent is 0.7 part, the weight of NaHCO3 anti-oxidant is 2 parts, the weight of antioxidant is 0.5-2 parts, the weight of halogen-free flame retardant ammonium polyphosphate (APP, the polymerization degree is 1000-4000) and the weight of flame retardant synergist is 2-8 parts, and uniformly mixing to obtain a mixture;
s4: and (3) extruding and granulating the mixture obtained in the step (S3) by using a double-screw extruder to obtain the dopamine modified reduced graphene oxide PVC composite material.
The compatibilizer in the S3 is one of vinyl chloride-butyl acrylate copolymer, MAH-g-PE maleic anhydride grafted PE and CPE, the antioxidant is Basoff Irganox1010, the flame retardant synergist comprises two organic and inorganic substances, the inorganic substances are one or more of magnesium hydroxide, aluminum hydroxide, zinc borate, antimony trioxide, zinc oxide and calcium powder, the organic substances are one or more of triphenyl phosphate, phosphotriester, triphosphate, phosphotriester and methylphosphonic acid dimethyl ester, and the ratio of the flame retardant to the flame retardant synergist is 4:1.
the double-screw extruder in the step S4 comprises six temperature areas which are sequentially arranged, wherein the temperature of the first area is 140 ℃, the temperature of the second area is 170 ℃, the temperature of the third area is 175 ℃, the temperature of the fourth area is 180 ℃, the temperature of the fifth area is 180 ℃, the temperature of the sixth area is 175 ℃, the temperature of a head of the double-screw extruder is 175 ℃, and the screw rotating speed is 200-280 r/min.
The preparation of the reduced graphene oxide in S1 comprises the following steps:
s11: gradually adding 2g of flaky natural graphite powder into cooled concentrated sulfuric acid;
s12: 12g of potassium permanganate and 1.2g of sodium nitrate are gradually added under stirring to be mixed;
s13: cooling for 3 hours at a temperature lower than 10 ℃ after the completion of the mixing; after cooling, heating to 35 ℃ again and continuing stirring for 45 minutes to obtain a mixture;
s14: 220 ml of deionized water is added into the mixture obtained in the step S13 and heated to 95 ℃, and after the color of the suspension starts to change from black to brown, 5% hydrogen peroxide solution is added to remove excessive potassium permanganate until the color of the mixture changes from dark brown to golden yellow;
s15: obtaining a mixed sample through centrifugation;
s16: washing with deionized water for several times, dispersing for 1 hour by ultrasonic wave, and adding hydrazine hydrate or tetrabutyl amine hydroxide or hydrogen iodide serving as a reducing agent into the graphene oxide solution to obtain a reduced graphene oxide solution.
In S11, after adding the natural graphite powder to the cooled concentrated sulfuric acid, rapid vigorous stirring is required for 50 minutes.
And the mass of the reducing agent in the step S16 is 20-50 times of that of the graphene oxide, and the reducing agent is added and heated to boil for reflux reaction for 4-12 hours.
The preparation of the dopamine modified bamboo wood powder in the S2 comprises the following steps:
s21: soaking untreated bamboo powder in 5% sodium hydroxide solution at room temperature for 24 hr, washing with water, and soaking in 2% acetic acid solution for 24 hr for neutralization;
s22: filtering and collecting the neutralized bamboo powder, and drying the bamboo powder in an air oven at 65 ℃ for 48 hours;
s23: dispersing dried bamboo wood powder in water, regulating the pH value to about 8.5 by using a tris buffer solution, then adding dopamine hydrochloride, and stirring the mixture at room temperature of 25 ℃ for reaction for 24 hours to obtain a mixed solution;
s24: filtering the mixed solution, and washing until the water becomes neutral and colorless;
s25: drying in an air oven at 100 ℃ for 48 hours, and taking out to obtain the dopamine modified bamboo wood powder.
The concentration of the bamboo wood powder in the water in the S23 is as follows: 150mg g -1 Concentration of dopamine in WaterThe method comprises the following steps: 0.3-1 mg.g -1 。
Comparative example one:
50 parts of PVC polyvinyl chloride, 40 parts of HDPE high-density polyethylene, 5 parts of unmodified bamboo powder, 5 parts of compatibilizer vinyl chloride-butyl acrylate copolymer, 1.5 parts of liquid paraffin, 5 parts of calcium stearate/zinc, 1 part of AC foaming agent, 2 parts of NaHCO3 oxygen inhibitor, 0.7 part of Pasteur-234 anti-aging agent and 0.5 part of Pasteur Irganox1010 antioxidant are weighed, mixed and stirred uniformly to obtain a mixture; and extruding and granulating by using a double-screw extruder.
Comparative example 2:
50 parts of PVC polyvinyl chloride, 50 parts of HDPE high-density polyethylene, 40 parts of unmodified bamboo powder, 5 parts of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B), 4 parts of reduced graphene oxide, 20 parts of flame retardant ammonium polyphosphate (APP, polymerization degree 1000-4000), 2.5 parts of magnesium hydroxide, 2.5 parts of aluminum hydroxide, 1.5 parts of liquid paraffin, 5 parts of calcium stearate/zinc, 1 part of AC foaming agent, 2 parts of NaHCO3 oxygen inhibitor, 0.7 part of Pasteur uv-234 anti-aging agent and 0.5 part of Pasteur Irganox1010 antioxidant are weighed, mixed and stirred uniformly to obtain a mixture; and extruding and granulating by using a double-screw extruder.
Example 1:
50 parts of PVC polyvinyl chloride, 50 parts of HDPE high-density polyethylene, 40 parts of dopamine modified bamboo wood powder, 5 parts of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B), 4 parts of reduced graphene oxide, 12 parts of flame retardant ammonium polyphosphate (APP, polymerization degree 1000-4000), 1.5 parts of magnesium hydroxide, 1.5 parts of aluminum hydroxide, 1.5 parts of liquid paraffin, 5 parts of calcium stearate/zinc, 1 part of AC foaming agent, 2 parts of NaHCO3 oxygen inhibitor, 0.7 part of Basfuv-234 anti-aging agent and 0.5 part of Basfuv Irganox1010 antioxidant are weighed, mixed and stirred uniformly to obtain a mixture; and extruding and granulating by using a double-screw extruder.
Example 2:
50 parts of PVC polyvinyl chloride, 50 parts of HDPEE high-density polyethylene, 40 parts of dopamine modified bamboo wood powder, 5 parts of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B), 7 parts of reduced graphene oxide, 12 parts of flame retardant ammonium polyphosphate (APP, polymerization degree 1000-4000), 1.5 parts of magnesium hydroxide, 1.5 parts of aluminum hydroxide, 1.5 parts of liquid paraffin, 5 parts of calcium stearate/zinc, 1 part of AC foaming agent, 2 parts of NaHCO3 oxygen inhibitor, 0.7 part of basf uv-234 anti-aging agent and 0.5 part of basf Irganox1010 antioxidant are weighed, mixed and stirred uniformly to obtain a mixture; and extruding and granulating by using a double-screw extruder.
Example 3:
50 parts of PVC polyvinyl chloride, 50 parts of HDPE high-density polyethylene, 40 parts of dopamine modified bamboo wood powder, 5 parts of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B), 4 parts of reduced graphene oxide, 20 parts of flame retardant ammonium polyphosphate (APP, polymerization degree 1000-4000), 2.5 parts of magnesium hydroxide, 2.5 parts of aluminum hydroxide, 1.5 parts of liquid paraffin, 5 parts of calcium stearate/zinc, 1 part of AC foaming agent, 2 parts of NaHCO3 oxygen inhibitor, 0.7 part of Basfuv-234 anti-aging agent and 0.5 part of Basfuv Irganox1010 antioxidant are weighed, mixed and stirred uniformly to obtain a mixture; and extruding and granulating by using a double-screw extruder.
Example 4:
50 parts of PVC polyvinyl chloride, 50 parts of HDPE high-density polyethylene, 40 parts of dopamine modified bamboo wood powder, 5 parts of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B), 7 parts of reduced graphene oxide, 20 parts of flame retardant ammonium polyphosphate (APP, polymerization degree 1000-4000), 2.5 parts of magnesium hydroxide, 2.5 parts of aluminum hydroxide, 1.5 parts of liquid paraffin, 5 parts of calcium stearate/zinc, 1 part of AC foaming agent, 2 parts of NaHCO3 oxygen inhibitor, 0.7 part of Pasteur uv-234 anti-aging agent and 0.5 part of Pasteur Irganox1010 antioxidant are weighed, mixed and stirred uniformly to obtain a mixture; and extruding and granulating by using a double-screw extruder.
Mechanical property test: tensile strength test standard bars were prepared according to GB/T1040.2-2006 standards and tested, and tensile experiments were performed on a universal tester at a tensile speed of 20mm/min.
Volume resistivity test: the volume resistivity of the composite material sample was measured according to GB/T1410-2006 using a ZC36 type high resistance instrument.
Limiting Oxygen Index (LOI): the test sample sizes were 100.0mm by 10.0mm by 4.0mm according to national standard GB/T2406.2-2009.
The test results are shown in table 1 below:
TABLE 1
As can be seen from Table 1, the test results of example 4 > example 3 > example 2 > example 1 > comparative example 2 > comparative example 1.
The bamboo wood-plastic composite material is prepared by blending the dopamine-modified bamboo wood powder, the reduced graphene oxide, the halogen-free flame retardant APP, the PVC and the HDPE, any organic solvent is not used in the whole preparation process, radiation crosslinking is not needed, the environment is protected, the preparation process is simple to operate, the cost is low, and the industrial production is easy to realize;
the prepared composite material utilizes the amphiphilic modified bamboo wood powder of dopamine, improves the compatibility and interface effect between the bamboo wood powder and a plastic substrate, and improves the mechanical property of the composite material; by adding the reduced graphene oxide antistatic material, the surface resistance of the material is reduced, and simultaneously, the flame retardant is added, so that the flame retardant property of the composite material is effectively improved, the blending modification of PVC and HDPE improves the processability and comprehensive performance of PVC, and the flame retardant property of HDPE can also be improved. The finally prepared environment-friendly bamboo-wood-plastic composite material has good mechanical property, flame retardant property, processability and antistatic property.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A preparation method of a PVC/HDPE bamboo wood plastic composite material is characterized by comprising the following steps: the method comprises the following steps:
s1: preparing reduced graphene oxide;
s2: preparing dopamine modified bamboo wood powder;
s3: weighing 20-50 parts of PVC polyvinyl chloride, 80-50 parts of HDPE high-density polyethylene, wherein the total weight of the PVC polyvinyl chloride and the HDPE high-density polyethylene is 100 parts, the weight of dopamine modified bamboo wood powder is 30-60 parts, the weight of reduced graphene oxide is 1-10 parts, the weight of compatibilizer vinyl chloride-butyl acrylate copolymer [ P (V-B) is 3-8 parts, the weight of liquid paraffin is 1.5 parts, the weight of calcium stearate/zinc is 3-6 parts, the weight of basvuv-234 anti-aging agent is 0.7 part, the weight of NaHCO3 anti-oxidant is 2 parts, the weight of antioxidant is 0.5-2 parts, the weight of halogen-free flame retardant ammonium polyphosphate (APP, the polymerization degree is 1000-4000) and the weight of flame retardant synergist is 2-8 parts, and uniformly mixing to obtain a mixture;
s4: and (3) extruding and granulating the mixture obtained in the step (S3) by using a double-screw extruder to obtain the dopamine modified reduced graphene oxide PVC composite material.
2. The method for preparing the PVC/HDPE bamboo-wood-plastic composite material according to claim 1, which is characterized by comprising the following steps: the compatibilizer in the S3 is one of vinyl chloride-butyl acrylate copolymer, MAH-g-PE maleic anhydride grafted PE and CPE, the antioxidant is Basoff Irganox1010, the flame retardant synergist comprises two organic and inorganic substances, the inorganic substances are one or more of magnesium hydroxide, aluminum hydroxide, zinc borate, antimony trioxide, zinc oxide and calcium powder, the organic substances are one or more of triphenyl phosphate, phosphotriester, triphosphate, phosphotriester and methylphosphonic acid dimethyl ester, and the ratio of the flame retardant to the flame retardant synergist is 4:1.
3. the method for preparing the PVC/HDPE bamboo-wood-plastic composite material according to claim 2, which is characterized by comprising the following steps: the double-screw extruder in the step S4 comprises six temperature areas which are sequentially arranged, wherein the temperature of the first area is 140 ℃, the temperature of the second area is 170 ℃, the temperature of the third area is 175 ℃, the temperature of the fourth area is 180 ℃, the temperature of the fifth area is 180 ℃, the temperature of the sixth area is 175 ℃, the temperature of a head of the double-screw extruder is 175 ℃, and the screw rotating speed is 200-280 r/min.
4. A method for preparing a PVC/HDPE bamboo wood plastic composite according to claim 3, wherein: the preparation of the reduced graphene oxide in S1 comprises the following steps:
s11: gradually adding 2g of flaky natural graphite powder into cooled concentrated sulfuric acid;
s12: 12g of potassium permanganate and 1.2g of sodium nitrate are gradually added under stirring to be mixed;
s13: cooling for 3 hours at a temperature lower than 10 ℃ after the completion of the mixing; after cooling, heating to 35 ℃ again and continuing stirring for 45 minutes to obtain a mixture;
s14: 220 ml of deionized water is added into the mixture obtained in the step S13 and heated to 95 ℃, and after the color of the suspension starts to change from black to brown, 5% hydrogen peroxide solution is added to remove excessive potassium permanganate until the color of the mixture changes from dark brown to golden yellow;
s15: obtaining a mixed sample through centrifugation;
s16: washing with deionized water for several times, dispersing for 1 hour by ultrasonic wave, and adding hydrazine hydrate or tetrabutyl amine hydroxide or hydrogen iodide serving as a reducing agent into the graphene oxide solution to obtain a reduced graphene oxide solution.
5. The method for preparing the PVC/HDPE bamboo-wood-plastic composite material according to claim 4, which is characterized in that: in S11, after adding the natural graphite powder to the cooled concentrated sulfuric acid, rapid vigorous stirring is required for 50 minutes.
6. The method for preparing the PVC/HDPE bamboo-wood-plastic composite material according to claim 5, which is characterized in that: and the mass of the reducing agent in the step S16 is 20-50 times of that of the graphene oxide, and the reducing agent is added and heated to boil for reflux reaction for 4-12 hours.
7. The method for preparing the PVC/HDPE bamboo-wood-plastic composite material according to claim 6, which is characterized in that: the preparation of the dopamine modified bamboo wood powder in the S2 comprises the following steps:
s21: soaking untreated bamboo powder in 5% sodium hydroxide solution at room temperature for 24 hr, washing with water, and soaking in 2% acetic acid solution for 24 hr for neutralization;
s22: filtering and collecting the neutralized bamboo powder, and drying the bamboo powder in an air oven at 65 ℃ for 48 hours;
s23: dispersing dried bamboo wood powder in water, regulating the pH value to about 8.5 by using a tris buffer solution, then adding dopamine hydrochloride, and stirring the mixture at room temperature of 25 ℃ for reaction for 24 hours to obtain a mixed solution;
s24: filtering the mixed solution, and washing until the water becomes neutral and colorless;
s25: drying in an air oven at 100 ℃ for 48 hours, and taking out to obtain the dopamine modified bamboo wood powder.
8. The method for preparing the PVC/HDPE bamboo-wood-plastic composite material according to claim 7, which is characterized in that: the concentration of the bamboo wood powder in the water in the S23 is as follows: 150mg g -1 The concentration of dopamine in water is: 0.3-1 mg.g -1 。
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