CN105348837A - A method of preparing a high-performance wood plastic composite by utilization of waste polystyrene - Google Patents
A method of preparing a high-performance wood plastic composite by utilization of waste polystyrene Download PDFInfo
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- 229920002223 polystyrene Polymers 0.000 title claims abstract description 54
- 239000004793 Polystyrene Substances 0.000 title claims abstract description 37
- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 29
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 29
- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 42
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 32
- 239000010902 straw Substances 0.000 claims abstract description 32
- 235000005822 corn Nutrition 0.000 claims abstract description 21
- 235000005824 corn Nutrition 0.000 claims abstract description 21
- -1 polytetrafluoroethylene, dicumyl Polymers 0.000 claims abstract description 19
- 239000011701 zinc Substances 0.000 claims abstract description 17
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229920001778 nylon Polymers 0.000 claims abstract description 13
- 229920001467 poly(styrenesulfonates) Polymers 0.000 claims abstract description 12
- 239000004417 polycarbonate Substances 0.000 claims abstract description 12
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 12
- 229940071182 stannate Drugs 0.000 claims abstract description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- CWQXQMHSOZUFJS-UHFFFAOYSA-N Molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 8
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 8
- 240000008042 Zea mays Species 0.000 claims description 29
- 230000004048 modification Effects 0.000 claims description 19
- 238000006011 modification reaction Methods 0.000 claims description 19
- 238000002203 pretreatment Methods 0.000 claims description 19
- BLRPTPMANUNPDV-UHFFFAOYSA-N silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 16
- 229910000077 silane Inorganic materials 0.000 claims description 16
- 229910001929 titanium oxide Inorganic materials 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- AQSJGOWTSHOLKH-UHFFFAOYSA-N Phosphite Chemical compound [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 claims description 11
- 239000007983 Tris buffer Substances 0.000 claims description 11
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 claims description 11
- 235000009973 maize Nutrition 0.000 claims description 11
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 11
- OGIDPMRJRNCKJF-UHFFFAOYSA-N TiO Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- BFKJFAAPBSQJPD-UHFFFAOYSA-N Tetrafluoroethylene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 230000001808 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 241000209149 Zea Species 0.000 abstract 3
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 abstract 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K Aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N Butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 abstract 1
- BJXXCOMGRRCAGN-CLFAGFIQSA-N [2,2-bis(hydroxymethyl)-3-[(Z)-octadec-9-enoyl]oxypropyl] (Z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(CO)(CO)COC(=O)CCCCCCC\C=C/CCCCCCCC BJXXCOMGRRCAGN-CLFAGFIQSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 150000003973 alkyl amines Chemical class 0.000 abstract 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 239000004408 titanium dioxide Substances 0.000 abstract 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N tris(2,4-ditert-butylphenyl) phosphite Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 5
- RCWUXKXEWJVOAO-CVBJKYQLSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol;(Z)-octadec-9-enoic acid Chemical class OCC(CO)(CO)CO.CCCCCCCC\C=C/CCCCCCCC(O)=O.CCCCCCCC\C=C/CCCCCCCC(O)=O RCWUXKXEWJVOAO-CVBJKYQLSA-N 0.000 description 4
- 150000001565 benzotriazoles Chemical class 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Abstract
A method of preparing a high-performance wood plastic composite by utilization of waste polystyrene is disclosed. The method includes a step of drying corn straw, smashing, sieving, dipping with an acid, and adding a silane coupling agent KH-550 and N,N-bis(2-hydroxyethyl) alkyl amine to obtain modified corn straw; a step of smashing waste polystyrene foam to obtain pretreated polystyrene; a step of fully mixing the modified corn straw, nanometer titanium dioxide, molybdenum disulfide, nanometer aluminium hydroxide, nanometer zinc stannate, a silane coupling agent KH-560, a silane coupling agent KH-570, a foaming agent, polytetrafluoroethylene, dicumyl peroxide and the pretreated polystyrene, maintaining the temperature at 140-155 DEG C for 2.5-5 min, and allowing the mixture to stand to obtain a preheated material; and a step of fully mixing the preheated material, nylon, polycarbonate, sulfonated polystyrene, benzotriazole, tris(2,4-ditert-butylphenyl) phosphite, pentaerythritol dioleate and butadiene styrene rubber, and performing hot press processing.
Description
Technical field
The present invention relates to wood plastic composite technical field, particularly relate to a kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material.
Background technology
Wood plastic composite has had the advantage of timber and plastics concurrently, good processability, and mechanical strength is high, has water-fast, corrosion resistant feature simultaneously, has been widely used in the field such as building trade, automobile industry.Polystyrene have transparent, good moldability, good rigidly, electrical insulation capability are good, easy dyeing, agent of low hygroscopicity and cheap advantage, be used widely in industries such as packaging, electronics, building, automobile, household electrical appliances, instrument, daily necessities and toys, it prepares one of conventional plastics of wood plastic composite, but polystyrene is more crisp, shock strength is not high yet, flame retardant resistance is not very desirable, thus limits the range of application of made wood plastic composite.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material, its technique is simple, easy handling, low for equipment requirements, the fire-retardant excellent performance of the matrix material obtained, good impact resistance, environmental friendliness and long service life.
A kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material that the present invention proposes, comprises the following steps:
S1, by weight by 30-50 part maize straw dry 2-3h at 90-100 DEG C, 200 mesh sieves are crossed after broken, then adding 20-35 part massfraction is in the hydrochloric acid of 10-20%, 30-60min is soaked at 35-50 DEG C, then 3-5 part silane resin acceptor kh-550 and 1-5 part N is added, N-double hydroxyethyl alkylamide, stirs 50-100min, and washing also obtains corn straw modification after drying;
S2, waste old polystyrene foamed plastic added in pulverizer to be crushed to diameter be that 0.5-1cm obtains pre-treatment polystyrene;
S3, by weight by 10-30 part corn straw modification, 5-20 part nano titanium oxide, 1-5 part molybdenumdisulphide, 2-10 part nano-aluminum hydroxide, 2-10 part nano-zinc stannate, 0.5-2 part silane coupling agent KH-560, 0.5-1.5 part Silane coupling reagent KH-570, 0.1-1 part whipping agent, 5-12 part tetrafluoroethylene and 0.2-1 part dicumyl peroxide mix, then add in 100 parts of pre-treatment polystyrene and mix, pass into saturation steam and be heated to 140-155 DEG C, insulation 2.5-5min, then at room temperature place 10-15h and obtain preheated material, wherein the pressure of saturation steam is 350-400kPa,
S4, by weight by 100 parts of preheated material and 3-10 part nylon, 2-10 part polycarbonate and 1-5 part sulfonated polystyrene mix, then 0.5-2 part benzotriazole is added, 1-5 part (2, 4 di-tert-butyl-phenyls) tris phosphite, 1-3.5 part pentaerythritol dioleic acid ester and 2-10 part styrene-butadiene rubber(SBR), then being placed in forming machine carries out hot-forming, described high-performance wood-plastic composite material is obtained after cooling, wherein, in hot-forming process, hot-forming temperature is 120-140 DEG C, hot-forming pressure is 300-450kPa, the hot-forming time is 15-30min.
Preferably, in S1, the weight ratio of maize straw, silane resin acceptor kh-550, N, N-double hydroxyethyl alkylamide is 38-46:3.8-4.3:3.2-4.
Preferably, in S3, the weight ratio of corn straw modification, nano titanium oxide, molybdenumdisulphide, nano-aluminum hydroxide, nano-zinc stannate, pre-treatment polystyrene is 18-26:10-16:3.2-4:6.5-8:5-7:100.
Preferably, the median size of described nano titanium oxide is 30-50nm; The median size of described nano-aluminum hydroxide is 40-60nm; The median size of described nano-zinc stannate is 25-55nm.
Preferably, in S3, wherein the pressure of saturation steam is 380kPa.
Preferably, in S4, the weight ratio of preheated material, nylon, polycarbonate, sulfonated polystyrene, benzotriazole, (2,4 di-tert-butyl-phenyl) tris phosphite, pentaerythritol dioleic acid ester, styrene-butadiene rubber(SBR) is 100:7-9:5-9:3-4:1-1.6:3-3.8:2.6-3.1:5-8.
Preferably, in S4, in hot-forming process, hot-forming temperature is 135 DEG C, and hot-forming pressure is 420kPa, and the hot-forming time is 20min.
In the present invention, first maize straw has been carried out pre-treatment, obtain corn straw modification, thus change the surface properties of maize straw, corn straw modification is added in system, good dispersity in system, strong with the interface binding power of polystyrene, with nano titanium oxide, molybdenumdisulphide, nano-aluminum hydroxide, after nano-zinc stannate and tetrafluoroethylene coordinate, effectively improve the cross-linking density of matrix material, improve the impelling strength of matrix material, intensity and ageing resistance, the tetrafluoroethylene simultaneously added has the effect of anti-melting drippage, with nano-aluminum hydroxide, the flame retardant resistance of matrix material excellence is given after nano-zinc stannate coordinates, before hot-forming, pre-treatment polystyrene being carried out saturation steam heat treated, by controlling the processing parameter of saturation steam heat treated, having made the melting of pre-treatment polystyrene complete, good with the Combination of unclassified stores, further improve unclassified stores dispersiveness in polystyrene, add nylon, polycarbonate, sulfonated polystyrene, benzotriazole, (2, 4 di-tert-butyl-phenyls) tris phosphite, pentaerythritol dioleic acid ester and styrene-butadiene rubber(SBR) have carried out modification to it, wherein all contain phenyl ring in polycarbonate and polystyrene molecule, both consistencies are good, its phase interface stress distribution uniformly continous when being subject to external force, line silver and shear zone can be produced in system, improve thermostability and the intensity of matrix material, improve the defect that polystyrene shock strength is low simultaneously, nylon add the toughness effectively improving matrix material, but the consistency of itself and polystyrene is not good enough, the sulfonated polystyrene added is as expanding material, improve the consistency of nylon and polystyrene, with (2, 4 di-tert-butyl-phenyls) tris phosphite, pentaerythritol dioleic acid ester, after styrene-butadiene rubber(SBR) coordinates, significantly improve the shock strength of matrix material.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material that the present invention proposes, comprises the following steps:
S1, by weight by 50 parts of maize straws dry 3h at 90 DEG C, 200 mesh sieves are crossed after broken, then adding 20 parts of massfractions is in the hydrochloric acid of 20%, 60min is soaked at 35 DEG C, then 3 parts of silane resin acceptor kh-550s and 5 parts of N are added, N-double hydroxyethyl alkylamide, stirs 50min, and washing also obtains corn straw modification after drying;
S2, waste old polystyrene foamed plastic added in pulverizer to be crushed to diameter be that 0.5-1cm obtains pre-treatment polystyrene;
S3, by weight 30 parts of corn straw modifications, 5 parts of nano titanium oxides, 5 parts of molybdenumdisulphide, 2 parts of nano-aluminum hydroxides, 10 parts of nano-zinc stannates, 0.5 part of silane coupling agent KH-560,1.5 parts of Silane coupling reagent KH-570s, 0.1 part of whipping agent, 12 parts of tetrafluoroethylene and 0.2 part of dicumyl peroxide to be mixed, then add in 100 parts of pre-treatment polystyrene and mix, pass into saturation steam and be heated to 155 DEG C, insulation 2.5min, then at room temperature place 15h and obtain preheated material, wherein the pressure of saturation steam is 350kPa;
S4, by weight 100 parts of preheated material to be mixed with 3 parts of nylon, 10 parts of polycarbonate and 1 part of sulfonated polystyrene, then add 2 parts of benzotriazoles, 1 part (2,4 di-tert-butyl-phenyls) tris phosphite, 3.5 parts of pentaerythritol dioleic acid esters and 2 parts of styrene-butadiene rubber(SBR), then being placed in forming machine carries out hot-forming, described high-performance wood-plastic composite material is obtained after cooling, wherein, in hot-forming process, hot-forming temperature is 140 DEG C, hot-forming pressure is 300kPa, and the hot-forming time is 30min.
Embodiment 2
A kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material that the present invention proposes, comprises the following steps:
S1, by weight by 30 parts of maize straws dry 2h at 100 DEG C, 200 mesh sieves are crossed after broken, then adding 35 parts of massfractions is in the hydrochloric acid of 10%, 30min is soaked at 50 DEG C, then 5 parts of silane resin acceptor kh-550s and 1 part of N is added, N-double hydroxyethyl alkylamide, stirs 100min, and washing also obtains corn straw modification after drying;
S2, waste old polystyrene foamed plastic added in pulverizer to be crushed to diameter be that 0.5-1cm obtains pre-treatment polystyrene;
S3, by weight 10 parts of corn straw modifications, 20 parts of nano titanium oxides, 1 part of molybdenumdisulphide, 10 parts of nano-aluminum hydroxides, 2 parts of nano-zinc stannates, 2 parts of silane coupling agent KH-560,0.5 part of Silane coupling reagent KH-570,1 part of whipping agent, 5 parts of tetrafluoroethylene and 1 part of dicumyl peroxide to be mixed, then add in 100 parts of pre-treatment polystyrene and mix, pass into saturation steam and be heated to 140 DEG C, insulation 5min, then at room temperature place 10h and obtain preheated material, wherein the pressure of saturation steam is 400kPa;
S4, by weight 100 parts of preheated material to be mixed with 10 parts of nylon, 2 parts of polycarbonate and 5 parts of sulfonated polystyrenes, then add 0.5 part of benzotriazole, 5 part (2,4 di-tert-butyl-phenyls) tris phosphite, 1 part of pentaerythritol dioleic acid ester and 10 parts of styrene-butadiene rubber(SBR), then being placed in forming machine carries out hot-forming, described high-performance wood-plastic composite material is obtained after cooling, wherein, in hot-forming process, hot-forming temperature is 120 DEG C, hot-forming pressure is 450kPa, and the hot-forming time is 15min.
Embodiment 3
A kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material that the present invention proposes, comprises the following steps:
S1, by weight by 38 parts of maize straws dry 2.2h at 98 DEG C, 200 mesh sieves are crossed after broken, then adding 33 parts of massfractions is in the hydrochloric acid of 13%, 40min is soaked at 46 DEG C, then 4.3 parts of silane resin acceptor kh-550s and 3.2 parts of N are added, N-double hydroxyethyl alkylamide, stirs 75min, and washing also obtains corn straw modification after drying;
S2, waste old polystyrene foamed plastic added in pulverizer to be crushed to diameter be that 0.5-1cm obtains pre-treatment polystyrene;
S3, by weight 18 parts of corn straw modifications, 16 parts of nano titanium oxides, 3.2 parts of molybdenumdisulphide, 8 parts of nano-aluminum hydroxides, 5 parts of nano-zinc stannates, 1 part of silane coupling agent KH-560,1.2 parts of Silane coupling reagent KH-570s, 0.5 part of whipping agent, 10 parts of tetrafluoroethylene and 0.5 part of dicumyl peroxide to be mixed, then add in 100 parts of pre-treatment polystyrene and mix, pass into saturation steam and be heated to 147 DEG C, insulation 4min, then at room temperature place 12h and obtain preheated material, wherein the pressure of saturation steam is 390kPa; The median size of described nano titanium oxide is 30nm; The median size of described nano-aluminum hydroxide is 60nm; The median size of described nano-zinc stannate is 25nm;
S4, by weight 100 parts of preheated material to be mixed with 7 parts of nylon, 9 parts of polycarbonate and 3 parts of sulfonated polystyrenes, then add 1.6 parts of benzotriazoles, 3 part (2,4 di-tert-butyl-phenyls) tris phosphite, 3.1 parts of pentaerythritol dioleic acid esters and 5 parts of styrene-butadiene rubber(SBR), then being placed in forming machine carries out hot-forming, described high-performance wood-plastic composite material is obtained after cooling, wherein, in hot-forming process, hot-forming temperature is 136 DEG C, hot-forming pressure is 390kPa, and the hot-forming time is 25min.
Embodiment 4
A kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material that the present invention proposes, comprises the following steps:
S1, by weight by 46 parts of maize straws dry 2.7h at 94 DEG C, 200 mesh sieves are crossed after broken, then adding 26 parts of massfractions is in the hydrochloric acid of 17%, 50min is soaked at 38 DEG C, then 3.8 parts of silane resin acceptor kh-550s and 4 parts of N are added, N-double hydroxyethyl alkylamide, stirs 60min, and washing also obtains corn straw modification after drying;
S2, waste old polystyrene foamed plastic added in pulverizer to be crushed to diameter be that 0.5-1cm obtains pre-treatment polystyrene;
S3, by weight 26 parts of corn straw modifications, 10 parts of nano titanium oxides, 4 parts of molybdenumdisulphide, 6.5 parts of nano-aluminum hydroxides, 7 parts of nano-zinc stannates, 1.6 parts of silane coupling agent KH-560,0.8 part of Silane coupling reagent KH-570,0.7 part of whipping agent, 7 parts of tetrafluoroethylene and 0.8 part of dicumyl peroxide to be mixed, then add in 100 parts of pre-treatment polystyrene and mix, pass into saturation steam and be heated to 152 DEG C, insulation 3min, then at room temperature place 13.5h and obtain preheated material, wherein the pressure of saturation steam is 375kPa; The median size of described nano titanium oxide is 50nm; The median size of described nano-aluminum hydroxide is 40nm; The median size of described nano-zinc stannate is 55nm;
S4, by weight 100 parts of preheated material to be mixed with 9 parts of nylon, 5 parts of polycarbonate and 4 parts of sulfonated polystyrenes, then add 1 part of benzotriazole, 3.8 part (2,4 di-tert-butyl-phenyls) tris phosphite, 2.6 parts of pentaerythritol dioleic acid esters and 8 parts of styrene-butadiene rubber(SBR), then being placed in forming machine carries out hot-forming, described high-performance wood-plastic composite material is obtained after cooling, wherein, in hot-forming process, hot-forming temperature is 128 DEG C, hot-forming pressure is 430kPa, and the hot-forming time is 18min.
Embodiment 5
A kind of method utilizing waste and old polystyrol to prepare high-performance wood-plastic composite material that the present invention proposes, comprises the following steps:
S1, by weight by 38 parts of maize straws dry 2.6h at 95 DEG C, 200 mesh sieves are crossed after broken, then adding 30 parts of massfractions is in the hydrochloric acid of 15%, 50min is soaked at 40 DEG C, then 4.2 parts of silane resin acceptor kh-550s and 3.2 parts of N are added, N-double hydroxyethyl alkylamide, stirs 80min, and washing also obtains corn straw modification after drying;
S2, waste old polystyrene foamed plastic added in pulverizer to be crushed to diameter be that 0.5-1cm obtains pre-treatment polystyrene;
S3, by weight 18 parts of corn straw modifications, 10 parts of nano titanium oxides, 3.8 parts of molybdenumdisulphide, 7.6 parts of nano-aluminum hydroxides, 5.5 parts of nano-zinc stannates, 1.6 parts of silane coupling agent KH-560,1.2 parts of Silane coupling reagent KH-570s, 0.8 part of whipping agent, 10 parts of tetrafluoroethylene and 0.6 part of dicumyl peroxide to be mixed, then add in 100 parts of pre-treatment polystyrene and mix, pass into saturation steam and be heated to 150 DEG C, insulation 3min, then at room temperature place 13.5h and obtain preheated material, wherein the pressure of saturation steam is 380kPa; The median size of described nano titanium oxide is 40nm; The median size of described nano-aluminum hydroxide is 55nm; The median size of described nano-zinc stannate is 50nm;
S4, by weight 100 parts of preheated material to be mixed with 8.5 parts of nylon, 5.8 parts of polycarbonate and 3.6 parts of sulfonated polystyrenes, then add 1.3 parts of benzotriazoles, 3.3 part (2,4 di-tert-butyl-phenyls) tris phosphite, 3 parts of pentaerythritol dioleic acid esters and 7.5 parts of styrene-butadiene rubber(SBR), then being placed in forming machine carries out hot-forming, described high-performance wood-plastic composite material is obtained after cooling, wherein, in hot-forming process, hot-forming temperature is 135 DEG C, hot-forming pressure is 420kPa, and the hot-forming time is 20min.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. utilize waste and old polystyrol to prepare a method for high-performance wood-plastic composite material, it is characterized in that, comprise the following steps:
S1, by weight by 30-50 part maize straw dry 2-3h at 90-100 DEG C, 200 mesh sieves are crossed after broken, then adding 20-35 part massfraction is in the hydrochloric acid of 10-20%, 30-60min is soaked at 35-50 DEG C, then 3-5 part silane resin acceptor kh-550 and 1-5 part N is added, N-double hydroxyethyl alkylamide, stirs 50-100min, and washing also obtains corn straw modification after drying;
S2, waste old polystyrene foamed plastic added in pulverizer to be crushed to diameter be that 0.5-1cm obtains pre-treatment polystyrene;
S3, by weight by 10-30 part corn straw modification, 5-20 part nano titanium oxide, 1-5 part molybdenumdisulphide, 2-10 part nano-aluminum hydroxide, 2-10 part nano-zinc stannate, 0.5-2 part silane coupling agent KH-560, 0.5-1.5 part Silane coupling reagent KH-570, 0.1-1 part whipping agent, 5-12 part tetrafluoroethylene and 0.2-1 part dicumyl peroxide mix, then add in 100 parts of pre-treatment polystyrene and mix, pass into saturation steam and be heated to 140-155 DEG C, insulation 2.5-5min, then at room temperature place 10-15h and obtain preheated material, wherein the pressure of saturation steam is 350-400kPa,
S4, by weight by 100 parts of preheated material and 3-10 part nylon, 2-10 part polycarbonate and 1-5 part sulfonated polystyrene mix, then 0.5-2 part benzotriazole is added, 1-5 part (2, 4 di-tert-butyl-phenyls) tris phosphite, 1-3.5 part pentaerythritol dioleic acid ester and 2-10 part styrene-butadiene rubber(SBR), then being placed in forming machine carries out hot-forming, described high-performance wood-plastic composite material is obtained after cooling, wherein, in hot-forming process, hot-forming temperature is 120-140 DEG C, hot-forming pressure is 300-450kPa, the hot-forming time is 15-30min.
2. utilize waste and old polystyrol to prepare the method for high-performance wood-plastic composite material according to claim 1, it is characterized in that, in S1, the weight ratio of maize straw, silane resin acceptor kh-550, N, N-double hydroxyethyl alkylamide is 38-46:3.8-4.3:3.2-4.
3. according to claim 1 or 2, utilize waste and old polystyrol to prepare the method for high-performance wood-plastic composite material, it is characterized in that, in S3, the weight ratio of corn straw modification, nano titanium oxide, molybdenumdisulphide, nano-aluminum hydroxide, nano-zinc stannate, pre-treatment polystyrene is 18-26:10-16:3.2-4:6.5-8:5-7:100.
4. according to any one of claim 1-3, utilize waste and old polystyrol to prepare the method for high-performance wood-plastic composite material, it is characterized in that, the median size of described nano titanium oxide is 30-50nm; The median size of described nano-aluminum hydroxide is 40-60nm; The median size of described nano-zinc stannate is 25-55nm.
5. according to any one of claim 1-4, utilize waste and old polystyrol to prepare the method for high-performance wood-plastic composite material, it is characterized in that, in S3, wherein the pressure of saturation steam is 380kPa.
6. according to any one of claim 1-5, utilize waste and old polystyrol to prepare the method for high-performance wood-plastic composite material, it is characterized in that, in S4, the weight ratio of preheated material, nylon, polycarbonate, sulfonated polystyrene, benzotriazole, (2,4 di-tert-butyl-phenyl) tris phosphite, pentaerythritol dioleic acid ester, styrene-butadiene rubber(SBR) is 100:7-9:5-9:3-4:1-1.6:3-3.8:2.6-3.1:5-8.
7. according to any one of claim 1-6, utilize waste and old polystyrol to prepare the method for high-performance wood-plastic composite material, it is characterized in that, in S4, in hot-forming process, hot-forming temperature is 135 DEG C, and hot-forming pressure is 420kPa, and the hot-forming time is 20min.
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