CN104231646A - Preparation method of high-strength wood-plastic composite material and high-strength wood-plastic composite material - Google Patents
Preparation method of high-strength wood-plastic composite material and high-strength wood-plastic composite material Download PDFInfo
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- CN104231646A CN104231646A CN201410429256.4A CN201410429256A CN104231646A CN 104231646 A CN104231646 A CN 104231646A CN 201410429256 A CN201410429256 A CN 201410429256A CN 104231646 A CN104231646 A CN 104231646A
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- butyl acrylate
- methacrylic acid
- wood plastic
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 title abstract description 18
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- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000002156 mixing Methods 0.000 claims abstract description 32
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- 239000007822 coupling agent Substances 0.000 claims abstract description 31
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 29
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- 238000001035 drying Methods 0.000 claims abstract description 25
- 229920000573 polyethylene Polymers 0.000 claims abstract description 20
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 18
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 18
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 18
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 18
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003063 flame retardant Substances 0.000 claims abstract description 16
- 238000000748 compression moulding Methods 0.000 claims abstract description 13
- 239000002023 wood Substances 0.000 claims abstract description 11
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 34
- 229920001577 copolymer Polymers 0.000 claims description 32
- VVWRJUBEIPHGQF-UHFFFAOYSA-N propan-2-yl n-propan-2-yloxycarbonyliminocarbamate Chemical compound CC(C)OC(=O)N=NC(=O)OC(C)C VVWRJUBEIPHGQF-UHFFFAOYSA-N 0.000 claims description 27
- 239000004159 Potassium persulphate Substances 0.000 claims description 17
- BEGBSFPALGFMJI-UHFFFAOYSA-N ethene;sodium Chemical group [Na].C=C BEGBSFPALGFMJI-UHFFFAOYSA-N 0.000 claims description 17
- 230000004048 modification Effects 0.000 claims description 17
- 238000012986 modification Methods 0.000 claims description 17
- 235000019394 potassium persulphate Nutrition 0.000 claims description 17
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005469 granulation Methods 0.000 claims description 13
- 230000003179 granulation Effects 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 9
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 9
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims description 9
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 9
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- 230000008569 process Effects 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 abstract description 18
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- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 abstract 2
- 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 abstract 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 abstract 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 13
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- 229920001903 high density polyethylene Polymers 0.000 description 6
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention relates to a preparation method of a high-strength wood-plastic composite material. The preparation method comprises the following steps of (1) preparing the following components in parts by weight: 20-60 parts of wood powder, 5-15 parts of dioctyl phthalate, 1-4 parts of titanate coupling agent, 1-2 parts of methacrylic acid, 1-2 parts of butyl acrylate, 0.5-1 part of azobisisobutyronitrile, 20-30 parts of absolute ethyl alcohol, 0.1-0.5 part of dodecylthiol, 30-50 parts of polyethylene (PE), 1-5 parts of ethylenediamine tetraacetic acid, 10-20 parts of ferrous sulfate, 1-5 parts of potassium peroxodisulfate, 20-30 parts of acetone and 10-20 parts of flame retardant; (2) drying the wood powder, and modifying; (3) copolymerizing methacrylic acid and butyl acrylate; (4) mixing; and (5) granulating and carrying out compression molding. The invention also discloses the high-strength wood-plastic composite material prepared by using the method.
Description
Technical field
The present invention relates to furniture manufacturing field, be specifically related to a kind of preparation method of the high-intensity wood plastic composite for the manufacture of furniture, and by goods prepared by the method.
Background technology
Wood plastic composite (Wood-Plastic Composites, WPC) be the class advanced composite material be in recent years surging forward both at home and abroad, refer to utilize polyethylene, polypropylene and polyvinyl chloride etc., replace common resin adhesive, new wood materials is mixed into useless vegetable fibres such as the wood powder more than more than 50%, rice husk, stalks, again through plastic processings such as extruding, mold pressing, injection moldings, the sheet material produced or section bar.Be mainly used in the industries such as building materials, furniture, logistics packaging.Through the sheet material of hot extrusion molding after plastics and wooden powder are mixed by a certain percentage, be referred to as to extrude wood-plastic composite panel.
The basis of wood plastic composite is high density polyethylene(HDPE) and wood fibre, determines some characteristic himself with plastics and timber, as:
1) good processing characteristics wood plastic composite includes plastics and fiber, therefore, has the processing characteristics that same timber is similar, can saw, can follow closely, can dig, and use carpenter's utensil to complete, and nail-holding ability is obviously better than other synthetic materialss.Mechanical property is better than wood materials.Nail-holding ability is generally 3 times of timber, is 5 times of shaving board.
2) good strength property wood plastic composite includes plastics, thus has good Young's modulus.In addition, due to including fiber and through fully mixing with plastics, thus there is the resistance to compression suitable with hardwood, the physical and mechanical properties such as counter-bending, and its wearing quality is obviously better than normal wood material.Surface hardness is high, is generally 2-5 times of timber.
3) have water-fast, corrosion resistant performance, long service life Wood-plastic material and products thereof, can anti-strong acid-base, water-fast, corrosion-resistant compared with timber, and not bacterial growth, is not easily damaged by worms, not long fungi.Long service life, can reach more than 50 years.
4) excellent adjustable by auxiliary agent, the changes such as plastics can be polymerized, foam, solidify, modification, thus the characteristic such as density, intensity changing Wood-plastic material, can also reach anti-aging, anti-electrostatic, the particular requirement such as fire-retardant.
5) there is ultraviolet stability, tint permanence is good.
6) its great advantage turns waste into wealth exactly, and can 100% reclaiming produce.Can decompose, can not cause " white pollution ", be real Green Product.
7) plastic raw materials of raw material sources widespread production wood plastic composite mainly high density polyethylene(HDPE) or polypropylene, wood fibre can be wood powder, cavings or xylon, also needs a small amount of additive and other processing aids in addition.
8) as required, arbitrary shape and size can be made.
Along with the continuous research and development to wood plastic composite, produce the plastic raw materials of wood plastic composite, except having high density polyethylene(HDPE) or polypropylene, also have polyvinyl chloride and PS.Technique also develops into s-generation conical double screw extruder by single screw extrusion machine the earliest, arrive by parallel double-screw extruder preliminary granulation again, again by conical screw extrusion moulding, can make up and be difficult to plasticizing, resistance to deterioration is poor, creep resistance is poor, the consistence of color and persistence are poor and tensile strength is low feature.
But, mostly be expendable wood plastic composite at present for furniture manufacturing field, cause the wasting of resources, cost virtual height.And some wood plastic composite, because physical strength is inadequate, can not meet the correlation intensity requirement of furniture key structure part, the furniture poor-performing produced, work-ing life is short, therefore needs the physical strength improving Wood-plastic material targetedly.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, provide a kind of for Furniture manufacture, furniture major mechanical intensive parameter demand, the preparation method of callable high-intensity wood plastic composite can be met, and by goods prepared by the method.
The technical scheme that the present invention is adopted for achieving the above object is:
A preparation method for high-intensity wood plastic composite, it comprises the following steps:
(1) each component is prepared by following parts by weight:
(2) drying is carried out to wooden powder, and with prepared titanate coupling agent, surface modification is carried out to dried wooden powder;
(3) with Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer;
(4) by modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, fire retardant and Potassium Persulphate, join in high-speed mixer, under 80 ~ 90 DEG C of temperature condition, mixing 5 ~ 10min;
(5) above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carry out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite, wherein, extruder barrel temperature is 160-185 DEG C, and die head temperature is 165-205 DEG C.
Described step (2) specifically comprises: by wooden powder in electric drying oven with forced convection, drying 4 hours under 120 DEG C of temperature condition, and carry out degreasing and oven dry, its water ratio is made to be less than 0.2%, with acetone, titanate coupling agent is diluted to 20% (V/V), then the titanate coupling agent after dilution is sprayed the wooden powder of process, then add in high-speed mixer and carry out pre-mixing 0.5h.
Step (3) specifically comprises: to thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring is after fully dissolving, add Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 70 ~ 90 DEG C of temperature condition, reaction 4 ~ 6h, obtains methacrylic acid, butyl acrylate copolymer.
Fire retardant described in step (1) is ammonium polyphosphate, and trimeric cyanamide and dipentaerythritol are wherein a kind of.
Implement a high-intensity wood plastic composite prepared by described method, it is made up of the component by following parts by weight: the wooden powder of modification: 20 ~ 60 parts; O-phthalic acid dibutyl ester: 5 ~ 15 parts; Titanate coupling agent: 1 ~ 4 part; Methacrylic acid: 1 ~ 2 part; Butyl acrylate: 1 ~ 2 part; Diisopropyl azodicarboxylate: 0.5 ~ 1 part; Dehydrated alcohol: 20 ~ 30 parts; Lauryl mercaptan: 0.1 ~ 0.5 part; Polythene PE: 30 ~ 50 parts; Sodium ethylene diamine tetracetate: 1 ~ 5 part; Ferrous sulfate: 10 ~ 20 parts; Potassium Persulphate: 1 ~ 5 part; Acetone: 20 ~ 30 parts; Fire retardant: 10 ~ 20 parts obtain; Wherein, by carrying out drying to wooden powder, and with prepared titanate coupling agent, surface modification is carried out to dried wooden powder; With Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer; By modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, fire retardant and Potassium Persulphate, join in high-speed mixer, under 80 ~ 90 DEG C of temperature condition, mixing 5 ~ 10min; Above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carries out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite.
Described extruder barrel temperature is 160-185 DEG C, and die head temperature is 165-205 DEG C.
Described methacrylic acid, butyl acrylate copolymer, specifically by thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring, after fully dissolving, adds Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 70 ~ 90 DEG C of temperature condition, obtained after reaction 4 ~ 6h.
Described fire retardant is ammonium polyphosphate, and trimeric cyanamide and dipentaerythritol are wherein a kind of.
The beneficial effect of the invention is: provided by the invention method is simple, condition is easy to control, be convenient to industrialization, particularly by the surface adhesion power pre-treatment to wooden powder, add the bonding strength of itself and other component, make material monolithic physical strength increase by more than 30%, be conducive to the recovery of material, recycling simultaneously; Prepared matrix material; because add the surface bonding strength of wooden powder, physical strength on material monolithic is improved, and corrosion-resistant degree is strong; meet the physical strength needs that furniture key structure part manufactures completely; meanwhile, matrix material of the present invention, can recycling; again add man-hour; wood powder easily complete the separating from other components of high temperature lower surface modification, is convenient to again manufacture, is conducive to economizing on resources and protection of the environment.
Embodiment
Embodiment 1: the preparation method of the high-intensity wood plastic composite that the present embodiment provides, it comprises the following steps:
(1) each component is prepared by following parts by weight:
Wherein said fire retardant is ammonium polyphosphate, and trimeric cyanamide and dipentaerythritol are wherein a kind of;
(2) drying is carried out to wooden powder, and with prepared titanate coupling agent, surface modification is carried out to dried wooden powder, to strengthen its surface adhesion performance;
Specifically by wooden powder in electric drying oven with forced convection, drying 4 hours under 120 DEG C of temperature condition, and carry out degreasing and oven dry, its water ratio is made to be less than 0.2%, with acetone, titanate coupling agent is diluted to 20% (V/V), then the titanate coupling agent after dilution is sprayed the wooden powder of process, then add in high-speed mixer and carry out pre-mixing 0.5h, its surface adhesion power more than 40% can be strengthened;
(3) with Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer;
Particularly to thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring is after fully dissolving, add Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 70 ~ 90 DEG C of temperature condition, reaction 4 ~ 6h, obtains methacrylic acid, butyl acrylate copolymer;
(4) by the wooden powder after surface modification, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, fire retardant and Potassium Persulphate, join in high-speed mixer, under 80 ~ 90 DEG C of temperature condition, mixing 5 ~ 10min;
(5) above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carry out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite, wherein, extruder barrel temperature is 160-185 DEG C, and die head temperature is 165-205 DEG C, obtained high-intensity wood plastic composite.
Implement a high-intensity wood plastic composite prepared by aforesaid method, it is made up of the component by following parts by weight: the wooden powder of modification: 20 ~ 60 parts; O-phthalic acid dibutyl ester: 5 ~ 15 parts; Titanate coupling agent: 1 ~ 4 part; Methacrylic acid: 1 ~ 2 part; Butyl acrylate: 1 ~ 2 part; Diisopropyl azodicarboxylate: 0.5 ~ 1 part; Dehydrated alcohol: 20 ~ 30 parts; Lauryl mercaptan: 0.1 ~ 0.5 part; Polythene PE: 30 ~ 50 parts; Sodium ethylene diamine tetracetate: 1 ~ 5 part; Ferrous sulfate: 10 ~ 20 parts; Potassium Persulphate: 1 ~ 5 part; Acetone: 20 ~ 30 parts; Fire retardant: 10 ~ 20 parts obtain; Wherein, by carrying out drying to wooden powder, and with prepared titanate coupling agent, surface modification is carried out to dried wooden powder; With Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer; By modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, fire retardant and Potassium Persulphate, join in high-speed mixer, under 80 ~ 90 DEG C of temperature condition, mixing 5 ~ 10min; Above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carries out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite.
Described extruder barrel temperature is 160-185 DEG C, and die head temperature is 165-205 DEG C.
Described methacrylic acid, butyl acrylate copolymer, specifically by thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring, after fully dissolving, adds Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 70 ~ 90 DEG C of temperature condition, obtained after reaction 4 ~ 6h.
Described fire retardant is ammonium polyphosphate, and trimeric cyanamide and dipentaerythritol are wherein a kind of.
Embodiment 2: the preparation method of the high-intensity wood plastic composite that the present embodiment provides and goods, its step and component substantially the same manner as Example 1, its difference is: it comprises the following steps:
(1) each component is prepared by following parts by weight:
(2) drying is carried out to wooden powder, and with prepared titanate coupling agent, surface modification is carried out to dried wooden powder;
(3) with Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer;
(4) by modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, ammonium polyphosphate and Potassium Persulphate, join in high-speed mixer, under 80 DEG C of temperature condition, mixing 5min;
(5) above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carry out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite, wherein, extruder barrel temperature is 160 DEG C, and die head temperature is 165 DEG C.
Described step (2) specifically comprises: by wooden powder in electric drying oven with forced convection, drying 4 hours under 120 DEG C of temperature condition, and carry out degreasing and oven dry, its water ratio is made to be less than 0.2%, with acetone, titanate coupling agent is diluted to 20% (V/V), then the titanate coupling agent after dilution is sprayed the wooden powder of process, then add in high-speed mixer and carry out pre-mixing 0.5h.
Step (3) specifically comprises: to thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring is after fully dissolving, add Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 70 DEG C of temperature condition, reaction 4h, obtains methacrylic acid, butyl acrylate copolymer.
Implement a high-intensity wood plastic composite prepared by described method, it is by the component by following parts by weight: wooden powder: 20 parts; O-phthalic acid dibutyl ester: 5 parts; Titanate coupling agent: 1 part; Methacrylic acid: 1 part; Butyl acrylate: 1 part; Diisopropyl azodicarboxylate: 0.5 part; Dehydrated alcohol: 20 parts; Lauryl mercaptan: 0.1 part; Polythene PE: 30 parts; Sodium ethylene diamine tetracetate: 1 part; Ferrous sulfate: 10 parts; Potassium Persulphate: 1 part; Acetone: 20 parts; Ammonium polyphosphate: 10 parts obtain; Wherein, by carrying out drying to wooden powder, and with prepared titanate coupling agent, modification is carried out to dried wooden powder; With Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer; By modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, ammonium polyphosphate and Potassium Persulphate, join in high-speed mixer, under 80 DEG C of temperature condition, mixing 5min; Above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carries out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite.Described extruder barrel temperature is 160 DEG C, and die head temperature is 165 DEG C.
Embodiment 3: the preparation method of the high-intensity wood plastic composite that the present embodiment provides and goods, its step and component substantially identical with embodiment 1,2, its difference is:
A preparation method for high-intensity wood plastic composite, it comprises the following steps:
(1) each component is prepared by following parts by weight:
(2) drying is carried out to wooden powder, and with prepared titanate coupling agent, modification is carried out to dried wooden powder;
(3) with Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer;
(4) by modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, trimeric cyanamide and Potassium Persulphate, join in high-speed mixer, under 85 DEG C of temperature condition, mixing 8min;
(5) above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carry out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite, wherein, extruder barrel temperature is 170 DEG C, and die head temperature is 190 DEG C.
Described step (2) specifically comprises: by wooden powder in electric drying oven with forced convection, drying 4 hours under 120 DEG C of temperature condition, and carry out degreasing and oven dry, its water ratio is made to be less than 0.2%, with acetone, titanate coupling agent is diluted to 20% (V/V), then the titanate coupling agent after dilution is sprayed the wooden powder of process, then add in high-speed mixer and carry out pre-mixing 0.5h.
Step (3) specifically comprises: to thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring is after fully dissolving, add Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 80 DEG C of temperature condition, reaction 5h, obtains methacrylic acid, butyl acrylate copolymer.
Implement a high-intensity wood plastic composite prepared by described method, it is by the component by following parts by weight: wooden powder: 45 parts; O-phthalic acid dibutyl ester: 10 parts; Titanate coupling agent: 2 parts; Methacrylic acid: 1.2 parts; Butyl acrylate: 1.3 parts; Diisopropyl azodicarboxylate: 0.7 part; Dehydrated alcohol: 24 parts; Lauryl mercaptan: 0.3 part; Polythene PE: 40 parts; Sodium ethylene diamine tetracetate: 3 parts; Ferrous sulfate: 15 parts; Potassium Persulphate: 4 parts; Acetone: 27 parts; Trimeric cyanamide: 15 parts obtain; Wherein, by carrying out drying to wooden powder, and with prepared titanate coupling agent, modification is carried out to dried wooden powder; With Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer; By modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, trimeric cyanamide and Potassium Persulphate, join in high-speed mixer, under 85 DEG C of temperature condition, mixing 8min; Above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carries out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite.Described extruder barrel temperature is 170 DEG C, and die head temperature is 190 DEG C.
Embodiment 4: the preparation method of the high-intensity wood plastic composite that the present embodiment provides and goods, its step and component substantially identical with embodiment 1,2,3, its difference is:
A preparation method for high-intensity wood plastic composite, it comprises the following steps:
(1) each component is prepared by following parts by weight:
(2) drying is carried out to wooden powder, and with prepared titanate coupling agent, modification is carried out to dried wooden powder;
(3) with Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer;
(4) by modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, dipentaerythritol and Potassium Persulphate, join in high-speed mixer, under 90 DEG C of temperature condition, mixing 10min;
(5) above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carry out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite, wherein, extruder barrel temperature is 185 DEG C, and die head temperature is 205 DEG C.
Described step (2) specifically comprises: by wooden powder in electric drying oven with forced convection, drying 4 hours under 120 DEG C of temperature condition, and carry out degreasing and oven dry, its water ratio is made to be less than 0.2%, with acetone, titanate coupling agent is diluted to 20% (V/V), then the titanate coupling agent after dilution is sprayed the wooden powder of process, then add in high-speed mixer and carry out pre-mixing 0.5h.
Step (3) specifically comprises: to thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring is after fully dissolving, add Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 90 DEG C of temperature condition, reaction 6h, obtains methacrylic acid, butyl acrylate copolymer.
Implement a high-intensity wood plastic composite prepared by described method, it is by the component by following parts by weight: wooden powder: 60 parts; O-phthalic acid dibutyl ester: 15 parts; Titanate coupling agent: 4 parts; Methacrylic acid: 2 parts; Butyl acrylate: 2 parts; Diisopropyl azodicarboxylate: 1 part; Dehydrated alcohol: 30 parts; Lauryl mercaptan: 0.5 part; Polythene PE: 50 parts; Sodium ethylene diamine tetracetate: 5 parts; Ferrous sulfate: 20 parts; Potassium Persulphate: 5 parts; Acetone: 30 parts; Dipentaerythritol: 20 parts obtain; Wherein, by carrying out drying to wooden powder, and with prepared titanate coupling agent, modification is carried out to dried wooden powder; With Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer; By modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, dipentaerythritol and Potassium Persulphate, join in high-speed mixer, under 90 DEG C of temperature condition, mixing 10min; Above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carries out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite.Described extruder barrel temperature is 185 DEG C, and die head temperature is 205 DEG C.
Wood-plastic material of the present invention, recycle number of times and can reach 5 ~ 10 times, and tensile strength reaches 30MPa ~ 35MPa, promote 10 ~ 15% than normal wood moulding material, shock strength reaches 12kJ/m
2~ 18kJ/m
2, improve 30 ~ 40% than normal wood moulding material impact strength.
But the foregoing is only better possible embodiments of the present invention; and be not used to limit to the scope of the claims of the present invention; therefore other embodiments of the step recorded in all utilization the present invention, component and application, and the equivalence change done, be all included in protection scope of the present invention.
Claims (8)
1. a preparation method for high-intensity wood plastic composite, is characterized in that, it comprises the following steps:
(1) each component is prepared by following parts by weight:
(2) drying is carried out to wooden powder, and with prepared titanate coupling agent, surface modification is carried out to dried wooden powder;
(3) with Diisopropyl azodicarboxylate and lauryl mercaptan, methacrylic acid and butyl acrylate are carried out copolyreaction, obtains methacrylic acid, butyl acrylate copolymer;
(4) by modified wooden powder, methacrylic acid, butyl acrylate copolymer, o-phthalic acid dibutyl ester, polythene PE, sodium ethylene diamine tetracetate, ferrous sulfate, fire retardant and Potassium Persulphate, join in high-speed mixer, under 80 ~ 90 DEG C of temperature condition, mixing 5 ~ 10min;
(5) above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carry out granulation, and compression moulding, obtain recyclable high-intensity wood plastic composite, wherein, extruder barrel temperature is 160-185 DEG C, and die head temperature is 165-205 DEG C.
2. the preparation method of high-intensity wood plastic composite according to claim 1, it is characterized in that, described step (2) specifically comprises: by wooden powder in electric drying oven with forced convection, drying 4 hours under 120 DEG C of temperature condition, and carry out degreasing and oven dry, its water ratio is made to be less than 0.2%, with acetone, titanate coupling agent is diluted to 20% (V/V), then the titanate coupling agent after dilution is sprayed the wooden powder of process, then add in high-speed mixer and carry out pre-mixing 0.5h.
3. the preparation method of high-intensity wood plastic composite according to claim 1, it is characterized in that, step (3) specifically comprises: to thermometer being housed, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring is after fully dissolving, add Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 70 ~ 90 DEG C of temperature condition, reaction 4 ~ 6h, obtains methacrylic acid, butyl acrylate copolymer.
4. the preparation method of high-intensity wood plastic composite according to claim 1, is characterized in that, the fire retardant described in step (1) is ammonium polyphosphate, and trimeric cyanamide and dipentaerythritol are wherein a kind of.
5. implement the claims a high-intensity wood plastic composite prepared by one of 1 ~ 4 described method, it is characterized in that, it is made up of the component by following parts by weight: wooden powder: 20 ~ 60 parts; O-phthalic acid dibutyl ester: 5 ~ 15 parts; Titanate coupling agent: 1 ~ 4 part; Methacrylic acid: 1 ~ 2 part; Butyl acrylate: 1 ~ 2 part; Diisopropyl azodicarboxylate: 0.5 ~ 1 part; Dehydrated alcohol: 20 ~ 30 parts; Lauryl mercaptan: 0.1 ~ 0.5 part; Polythene PE: 30 ~ 50 parts; Sodium ethylene diamine tetracetate: 1 ~ 5 part; Ferrous sulfate: 10 ~ 20 parts; Potassium Persulphate: 1 ~ 5 part; Acetone: 20 ~ 30 parts; Fire retardant: 10 ~ 20 parts obtain; Wherein, described wood powder first carries out drying, and carry out modification with prepared titanate coupling agent to dried wooden powder and obtain; Described methacrylic acid, butyl acrylate copolymer are with Diisopropyl azodicarboxylate and lauryl mercaptan, and methacrylic acid and butyl acrylate are carried out copolyreaction and obtain; By modified wooden powder and other components above-mentioned, join in high-speed mixer, under 80 ~ 90 DEG C of temperature condition, mixing 5 ~ 10min; Above-mentioned uniform mixture is sent into melt blending in parallel double-screw extruder, carries out granulation, and compression moulding, obtain high-intensity wood plastic composite.
6. high-intensity wood plastic composite according to claim 5, is characterized in that, described extruder barrel temperature is 160-185 DEG C, and die head temperature is 165-205 DEG C.
7. high-intensity wood plastic composite according to claim 5, it is characterized in that, described methacrylic acid, butyl acrylate copolymer, specifically by being equipped with thermometer, refluxing in the container of cool solidifying pipe and agitator, add methacrylic acid and butyl acrylate, and add dehydrated alcohol as solvent, stirring, after fully dissolving, adds Diisopropyl azodicarboxylate and lauryl mercaptan successively, then container is placed in thermostat water bath, under 70 ~ 90 DEG C of temperature condition, obtained after reaction 4 ~ 6h.
8. high-intensity wood plastic composite according to claim 5, is characterized in that, described fire retardant is ammonium polyphosphate, and trimeric cyanamide and dipentaerythritol are wherein a kind of.
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