CN102796339A - Reclaimed polypropylene (PP)-based wood-plastic composite material and preparation method thereof - Google Patents
Reclaimed polypropylene (PP)-based wood-plastic composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a reclaimed polypropylene (PP)-based wood-plastic composite material and a preparation method thereof. The wood-plastic composite material comprises the raw materials by weight: 50 to 70 parts of reclaimed PP, 30 to 50 parts of natural plant fiber, 0.1 to 0.3 part of initiator, 0.1 to 6 parts of glycidyl methacrylate and 0.1 to 3 parts of styrene, wherein the sum of the weight parts of the reclaimed PP and the natural plant fiber is 100. By double monomer melt grafting in-situ reactive compatibilization, the compatibility of the reclaimed PP and the natural plant fiber is effectively improved, the interface bounding force between two phases is enhanced and the comprehensive performance of the material is improved. Various sectional materials can be extruded by different dies, so that industrialized production of the materials such as automobile internal lining panels, windows, doors and the like is realized.
Description
Technical field
The invention belongs to the wood plastic composite field, particularly a kind of recovery PP base wood-plastic composite material and preparation method thereof.
Background technology
Wood plastic composite (WPC) is to utilize natural plant fibres such as wood powder, bamboo powder, agricultural crop straw powder, shell powder and Plastic Resin or waste or used plastics to be main raw material, through high temperature mixing, forming process and a kind of novel environment-friendly composite material that makes.Increase the application of this material, can improve the level of comprehensive utilization of natural plant fibre, reduce white pollution, reduction is dealt with the waste that causes improperly because of waste resource.Thereby more and more receive people's attention.
The interaction strength at hydrophilic natural plant fibre and oil loving plastic substrate compound tense interface is less; Dispersiveness and both consistency of natural plant fibre powder in plastic substrate is relatively poor; The composite material combination property that causes preparing is not good; Influence the application of matrix material, need carry out capacity increasing modifying it.
A lot of scientific research personnel study this, and disclose achievement in research.Patent CN201010030196.0 discloses a kind of preparation method of waste polyethylene/wood flour composite material, and this matrix material uses coupling agent as compatilizer, and the mechanical property of material is lower.Patent CN200510060794.1 discloses a kind of with the preparation method of coupling agent as the thermoplastics base wood-plastic composite material of expanding material.Patent CN02160123.2 a kind of wood fibre modified thermoplastic is disclosed and the preparation method of matrix material, the compatilizer that this method adopts is made up of the polymkeric substance of EVA, vinylformic acid, propenoate and the mixture of chlorinatedpolyethylene.
This shows, improve natural plant fibre dispersed in plastic substrate and with traditional general method of the consistency of plastic substrate be fiber to be carried out surface-treated with coupling agent.But with the grafting superpolymer vegetable fibre is carried out surface chemical modification, because modified effect mechanical property increase rate good, matrix material causes people's attention greatly and more and more.Research with fusion-grafting reaction in increase-volume natural plant fibre and plastic substrate does not appear in the newspapers as yet.
The reaction in increase-volume is meant that superpolymer, grafted monomer and the initiator two or more put in the parallel double-screw extruder in the lump; In extrusion; Grafted monomer is being grafted under the initiation of initiator on one or more superpolymer; Had polarity and nonpolar group simultaneously by the superpolymer of grafted monomer in the grafting, increase the consistency of two kinds of superpolymer as compatilizer.
The present invention introduces reactive high molecular polymer (two molten monomer graft polypropylene) as walnut shell flour and the expanding material that reclaims PP; Solve the compatibility problem between walnut shell flour and the plastic substrate; Good with obtained performance, as to have high added value recovery PP/ walnut shell flour wood plastic composite is a purpose; Be expected to be applied, like section bars such as floor, wall dunnage, door and window, material of construction etc. in fields such as house decorative material and daily lifes.
Summary of the invention
The objective of the invention is to adopt the method for reaction in increase-volume, the recovery PP/ walnut shell flour wood plastic composite that prepare excellent combination property, is easy to process.
In order to realize the object of the invention, technical scheme of the present invention is following:
A kind of recovery PP base wood-plastic composite material, its raw material is formed and weight part is:
Reclaim 50 ~ 70 parts of PP;
30 ~ 50 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100 parts;
0.1 ~ 0.3 part of initiator;
0.1 ~ 6 part of SY-Monomer G (GMA);
0.1 ~ 3 part of vinylbenzene (St).
Among some embodiment, said initiator is an organic type of superoxide therein, comprises a kind of of hydroperoxide type, dialkyl class, peroxo-two acyl classes, peroxyesters, peroxy dicarbonates.
Among some embodiment, said initiator is the Di Cumyl Peroxide 99 (DCP) in the dialkyl class therein.
The present invention has disclosed a kind of preparation method of the PP of recovery base wood-plastic composite material, and this method may further comprise the steps:
(1), the nut-shell of said weight part is pulverized, clay into power, place vacuum drying oven to dry processing, the control oven temperature dry 4 ~ 8 hours, is cooled to room temperature with it then at 110 ~ 150 ℃;
(2), the initiator with said weight part, SY-Monomer G, vinylbenzene be dissolved in the diluent ethanol, places subsequent use;
(3), will dry processing walnut shell flour, reclaim PP and mix in proportion; Mixing solutions in the step (2) is poured into walnut shell flour, reclaimed in the blend of PP; Obtain premix, premix is positioned in the air, diluent ethanol is volatilized away;
(4), place parallel double-screw extruder to melt extrude moulding the premix that mixes.Complete processing is following: the parallel double-screw extruder screw speed is 60 ~ 150r/min, 80 ~ 140 ℃ of district's temperature, 160 ~ 220 ℃ of two district's temperature; 160 ~ 220 ℃ of three district's temperature; 160 ~ 220 ℃ of four district's temperature, 160 ~ 220 ℃ of five district's temperature, 160 ~ 220 ℃ of six district's temperature; 160 ~ 220 ℃ of seven district's temperature, 160 ~ 220 ℃ of die head temperatures.
Among embodiment, the preparation method may further comprise the steps therein:
(1), nut-shell is pulverized, clay into power, place vacuum drying oven to dry processing, the control oven temperature dry 5 ~ 7 hours, is cooled to room temperature with it then at 110 ~ 130 ℃;
(2), initiator and SY-Monomer G, vinylbenzene are dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing walnut shell flour, reclaim PP and mix in proportion; Just the mixing solutions in the step (2) is poured walnut shell flour into, is reclaimed in the blend of PP; Obtain premix, premix is positioned in the air, diluent ethanol is volatilized away;
(4), place parallel double-screw extruder to melt extrude moulding the premix that mixes.
Complete processing is following: the parallel double-screw extruder screw speed is 80 ~ 100r/min, 160 ~ 180 ℃ of district's temperature, 170 ~ 200 ℃ of two district's temperature; 170 ~ 200 ℃ of three district's temperature; 170 ~ 200 ℃ of four district's temperature, 170 ~ 200 ℃ of five district's temperature, 170 ~ 200 ℃ of six district's temperature; 170 ~ 200 ℃ of seven district's temperature, 160 ~ 180 ℃ of die head temperatures.
Wherein screw rod is shaped as single thread, and the ratio (L/D) of spiro rod length (L) and diameter (D) is 20 ~ 60, and preferred 30 ~ 50.
Recovery PP/ walnut shell flour wood plastic composite provided by the present invention and preparation method thereof has the following advantages:
1, adopts the recyclable utilization of recovery PP/ walnut shell flour wood plastic composite of method preparation of the present invention, environmental protection.The staple of walnut shell flour is a natural plant fibre, is the green material that can degrade fully, and wide material sources, belongs to renewable resources, and cost is lower.
2, adopt the recovery PP/ walnut shell flour wood plastic composite of method preparation of the present invention, excellent combination property, and attractive in appearance, imitative wood effect good, be easy to processing.
3, adopt method preparation of the present invention to reclaim PP/ walnut shell flour wood plastic composite, its technology is simple, is easy to control, and not high to equipment requirements, employed equipment is general polymer processing equipment, invests less.
4, adopt method preparation of the present invention to reclaim PP/ walnut shell flour wood plastic composite, shortened technical process, saved the energy, improved production efficiency, be easy to apply.
Description of drawings
Fig. 1 process flow sheet of the present invention.
Embodiment
The employed raw material of the embodiment of the invention is following:
Reclaim PP, available from the technics of reclaim of plastic waste station;
Walnut shell flour, self-control; Method is following: nut-shell is pulverized, and wearing into particle diameter then is 60 ~ 300 purpose powder;
Di Cumyl Peroxide 99 (DCP): analytical pure, Chemical Reagent Co., Ltd., Sinopharm Group;
SY-Monomer G (GMA): analytical pure, Mitsubishi;
Vinylbenzene (St): analytical pure, Chemical Reagent Co., Ltd., Sinopharm Group.
It is following that PP/ walnut shell flour wood plastic composite principle is reclaimed in two molten monomer grafting reaction in increase-volumes:
Wherein RO-OR is an initiator, and CE is Mierocrystalline cellulose (cellulose) molecular chain
Initiator at first all is cleaved into elementary radical, sees formula (1); This elementary radical is grabbed the Wasserstoffatoms on the PP main chain then, forms macromolecular radical PP, sees formula (2); Wasserstoffatoms on the two keys of macromolecular radical PP and vinylbenzene (St) forms PP-g-St, sees formula (3); Two key reactions on PP-g-St and the GMA generate the PP-g-(GMA-co-St) that has polar group and non-polar group, see formula (4); Epoxide group on the PP-g-(GMA-co-St) and the hydroxyl reaction on the cellulosic molecule; Form PP-g-(GMA-co-St)-CE; See formula (5); Thereby improved the consistency of PP and walnut shell flour, and the dispersiveness of walnut shell flour in the PP matrix, thereby the mechanical property of raising matrix material.
Comparative example 1:
A kind of PP of recovery base wood-plastic composite material is formed by the raw material cooperation of following weight part: reclaim 70 parts of PP; 30 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100 parts.
A kind of preparation method who reclaims the PP base wood-plastic composite material, this method may further comprise the steps:
(1), nut-shell is pulverized, clay into power, particle diameter is 150 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 6 hours, is cooled to room temperature with it then at 120 ℃;
(2), will dry processing the nut-shell powder, reclaim PP and mix in proportion;
(3), the premix material that mixes is added extrusion moulding in the parallel double-screw extruder.
Complete processing is following: the parallel double-screw extruder screw speed is 80r/min, 100 ℃ of district's temperature, 180 ℃ of two district's temperature; 180 ℃ of three district's temperature, 180 ℃ of four district's temperature, 180 ℃ of five district's temperature; 180 ℃ of six district's temperature, 180 ℃ of seven district's temperature, 170 ℃ of die head temperatures.
The screw rod of said parallel double-screw extruder is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 30.
Embodiment 1:
A kind of recovery PP base wood-plastic composite material is cooperated by the raw material of following weight part to form: reclaim 70 parts of PP; 30 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100; 0.1 part of Di Cumyl Peroxide 99; 2 parts of SY-Monomer Gs; 1 part of vinylbenzene.
A kind of preparation method who reclaims the PP base wood-plastic composite material, this method may further comprise the steps:
(1), nut-shell is pulverized, clay into power, particle diameter is 150 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 6 hours, is cooled to room temperature with it then at 120 ℃;
(2), Di Cumyl Peroxide 99 and SY-Monomer G, vinylbenzene are dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion, just the mixing solutions in the step (2) is poured the walnut shell flour powder into, is reclaimed in the mixture of PP, and mixture is positioned in the air, and diluent ethanol is volatilized away;
(4), the premix material that mixes is added extrusion moulding in the parallel double-screw extruder.
Complete processing is following: the parallel double-screw extruder screw speed is 100r/min, 120 ℃ of district's temperature, 200 ℃ of two district's temperature; 200 ℃ of three district's temperature, 200 ℃ of four district's temperature, 200 ℃ of five district's temperature; 200 ℃ of six district's temperature, 200 ℃ of seven district's temperature, 190 ℃ of die head temperatures.
The screw rod of said parallel double-screw extruder is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 35.
Embodiment 2:
A kind of PP of recovery base wood-plastic composite material is formed by the raw material cooperation of following weight part: reclaim 60 parts of PP; 40 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100; 0.2 part of Di Cumyl Peroxide 99; 4 parts of SY-Monomer Gs; 2 parts of vinylbenzene.
A kind of preparation method who reclaims the PP base wood-plastic composite material, this method may further comprise the steps:
(1), nut-shell is pulverized, clay into power, particle diameter is 150 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 6 hours, is cooled to room temperature with it then at 120 ℃;
(2), Di Cumyl Peroxide 99 and SY-Monomer G, vinylbenzene are dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion, just the mixing solutions in the step (2) is poured the nut-shell powder into, is reclaimed in the PP mixture, and mixture is positioned in the air, and diluent ethanol is volatilized away;
(4), the premix material that mixes is added extrusion moulding in the parallel double-screw extruder.
Complete processing is following: the parallel double-screw extruder screw speed is 80r/min, 160 ℃ of district's temperature, 180 ℃ of two district's temperature; 180 ℃ of three district's temperature, 180 ℃ of four district's temperature, 180 ℃ of five district's temperature; 180 ℃ of six district's temperature, 180 ℃ of seven district's temperature, 170 ℃ of die head temperatures.
The screw rod of said parallel double-screw extruder is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 40.
Embodiment 3:
A kind of PP of recovery base wood-plastic composite material is formed by the raw material cooperation of following weight part: reclaim 50 parts of PP; 50 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100; 0.3 part of Di Cumyl Peroxide 99; 6 parts of SY-Monomer Gs; 3 parts of vinylbenzene.
A kind of preparation method who reclaims the PP base wood-plastic composite material, this method may further comprise the steps:
(1), nut-shell is pulverized, clay into power, particle diameter is 150 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 6 hours, is cooled to room temperature with it then at 120 ℃;
(2), Di Cumyl Peroxide 99 and SY-Monomer G, vinylbenzene are dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion, just the mixing solutions in the step (2) is poured the nut-shell powder into, is reclaimed the PP mixture, and mixture is positioned in the air, and diluent ethanol is volatilized away.
(4), the premix material that mixes is added extrusion moulding in the parallel double-screw extruder.
Complete processing is following: the parallel double-screw extruder screw speed is 100r/min, 180 ℃ of district's temperature, 200 ℃ of two district's temperature; 200 ℃ of three district's temperature, 200 ℃ of four district's temperature, 200 ℃ of five district's temperature; 200 ℃ of six district's temperature, 200 ℃ of seven district's temperature, 190 ℃ of die head temperatures.
The screw rod of said parallel double-screw extruder is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 45.
Embodiment 4:
A kind of PP of recovery base wood-plastic composite material is formed by the raw material cooperation of following weight part: reclaim 70 parts of PP; 30 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100; 0.2 part of Di Cumyl Peroxide 99; 4 parts of SY-Monomer Gs; 2 parts of vinylbenzene.
A kind of preparation method who reclaims the PP base wood-plastic composite material, this method may further comprise the steps:
(1), nut-shell is pulverized, clay into power, particle diameter is 150 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 6 hours, is cooled to room temperature with it then at 120 ℃;
(2), Di Cumyl Peroxide 99 and SY-Monomer G, vinylbenzene are dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion, just the mixing solutions in the step (2) is poured the nut-shell powder into, is reclaimed in the mixture of PP, and mixture is positioned in the air, and diluent ethanol is volatilized away;
(4), the premix material that mixes is added extrusion moulding in the parallel double-screw extruder.
Complete processing is following: the parallel double-screw extruder screw speed is 80r/min, 160 ℃ of district's temperature, 180 ℃ of two district's temperature; 180 ℃ of three district's temperature, 180 ℃ of four district's temperature, 180 ℃ of five district's temperature; 180 ℃ of six district's temperature, 180 ℃ of seven district's temperature, 170 ℃ of die head temperatures.
The screw rod of said parallel double-screw extruder is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 50.
Embodiment 5:
A kind of PP of recovery base wood-plastic composite material is formed by the raw material cooperation of following weight part: reclaim PP70 part; 30 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100; 0.3 part of Di Cumyl Peroxide 99; 6 parts of SY-Monomer Gs; 3 parts of vinylbenzene.
A kind of preparation method who reclaims the PP base wood-plastic composite material, this method may further comprise the steps:
(1), nut-shell is pulverized, clay into power, particle diameter is 150 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 6 hours, is cooled to room temperature with it then at 120 ℃;
(2), Di Cumyl Peroxide 99 and SY-Monomer G, vinylbenzene are dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion, just the mixing solutions in the step (2) is poured the nut-shell powder into, is reclaimed in the mixture of PP, and mixture is positioned in the air, and diluent ethanol is volatilized away;
(4), the premix material that mixes is added extrusion moulding in the parallel double-screw extruder.
Complete processing is following: the parallel double-screw extruder screw speed is 100r/min, 180 ℃ of district's temperature, 200 ℃ of two district's temperature; 200 ℃ of three district's temperature, 200 ℃ of four district's temperature, 200 ℃ of five district's temperature; 200 ℃ of six district's temperature, 200 ℃ of seven district's temperature, 190 ℃ of die head temperatures.
The screw rod of said parallel double-screw extruder is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 40.
Embodiment 6:
A kind of PP of recovery base wood-plastic composite material is formed by the raw material cooperation of following weight part: reclaim PP70 part; 30 parts of walnut shell flours, the weight part summation that reclaims PP and walnut shell flour is 100; 0.1 part of Di Cumyl Peroxide 99; 0.1 part of SY-Monomer G; 0.1 part of vinylbenzene.
A kind of preparation method who reclaims the PP base wood-plastic composite material, this method may further comprise the steps:
(1), nut-shell is pulverized, clay into power, particle diameter is 150 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 6 hours, is cooled to room temperature with it then at 120 ℃;
(2), Di Cumyl Peroxide 99 and SY-Monomer G, vinylbenzene are dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion, just the mixing solutions in the step (2) is poured the nut-shell powder into, is reclaimed in the mixture of PP, and mixture is positioned in the air, and diluent ethanol is volatilized away;
(4), the premix material that mixes is added extrusion moulding in the parallel double-screw extruder.
Complete processing is following: the parallel double-screw extruder screw speed is 100r/min, 180 ℃ of district's temperature, 200 ℃ of two district's temperature; 200 ℃ of three district's temperature, 200 ℃ of four district's temperature, 200 ℃ of five district's temperature; 200 ℃ of six district's temperature, 200 ℃ of seven district's temperature, 190 ℃ of die head temperatures.
The screw rod of said parallel double-screw extruder is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 50.
The parts by weight of raw materials table look-up of table 1 comparative example and embodiment
The made sample of above-mentioned each embodiment is carried out following performance test:
Tensile strength: press GB/T1042 ~ 1992 standard testings, rate of extension 50mm/min;
Shock strength: press GB/T1843 ~ 1996 standard testings, batten thickness is 3.2mm;
Modulus in flexure: press GB9341 ~ 88 standard testings;
Flexural strength: press GB9341 ~ 88 standard testings;
Modulus of compression: press the GB/T1041 standard testing;
Compressive strength: press the GB/T1041 standard testing.
Table 2 comparative example and embodiment performance table look-up
Comparative example 1 is 70 parts and reclaims PP and 30 parts of walnut shell flours; Do not add other auxiliary agent; Embodiment 1 ~ 3 is the recovery PP/ walnut shell flour wood plastic composite of two molten monomer grafting reaction in increase-volumes; Fixedly the ratio of GMA/St/DCP is 20/10/1, and the parts by weight of walnut shell flour are respectively 30 parts, 40 parts, 50 parts.Can find out that the tensile strength of matrix material and shock strength reduce along with the increase of walnut shell flour weight part, modulus in flexure, flexural strength, modulus of compression, compressive strength then increase along with the increase of walnut shell flour consumption.Therefore, can select the interpolation umber of different walnut shell flours, produce the matrix material of better performances according to the end-use of material.Walnut shell flour is 30 parts among the embodiment 4 ~ 6, but the add-on of GMA, St, DCP is different.Can find out that by embodiment result the optimal addn of GMA, St, DCP is respectively 2 parts, 1 part, 0.1 part.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (5)
1. one kind is reclaimed the PP base wood-plastic composite material, it is characterized in that said composition comprises the compound of following weight part:
Reclaim 50 ~ 70 parts of PP;
30 ~ 50 parts of natural plant fibres, the weight part summation that reclaims PP and natural plant fibre is 100 parts;
0.1 ~ 0.3 part of initiator;
0.1 ~ 6 part of SY-Monomer G;
0.1 ~ 3 part of vinylbenzene;
Said natural plant fibre is a walnut shell flour, and its particle diameter is 60 ~ 300 orders;
Said initiator is an organic type of superoxide, comprises hydroperoxide type, dialkyl class, peroxo-two acyl classes, peroxyesters, peroxy dicarbonates.
2. a kind of recovery PP base wood-plastic composite material according to claim 1 is characterized in that said organic type of superoxide is the Di Cumyl Peroxide 99 in the dialkyl class.
3. a method for preparing each described recovery PP base wood-plastic composite material of claim 1 ~ 2 is characterized in that, may further comprise the steps:
(1), the nut-shell of said weight part is pulverized, clay into power, particle diameter is 60 ~ 300 orders, places vacuum drying oven to dry processing, and the control oven temperature dry 4 ~ 8 hours, is cooled to room temperature with it then at 110 ~ 150 ℃;
(2), initiator and SY-Monomer G, the vinylbenzene of said weight part is dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion; Mixing solutions in the step (2) is poured into the nut-shell powder, reclaimed in the blend of PP; Obtain premix, premix is positioned in the air, diluent ethanol is volatilized away;
(4), place parallel double-screw extruder to melt extrude moulding the premix that mixes;
Complete processing is following: the parallel double-screw extruder screw speed is 60 ~ 150r/min, 80 ~ 140 ℃ of district's temperature, 160 ~ 220 ℃ of two district's temperature; 160 ~ 220 ℃ of three district's temperature; 160 ~ 220 ℃ of four district's temperature, 160 ~ 220 ℃ of five district's temperature, 160 ~ 220 ℃ of six district's temperature; 160 ~ 220 ℃ of seven district's temperature, 160 ~ 200 ℃ of die head temperatures.
4. preparation method according to claim 3 is characterized in that, may further comprise the steps:
(1), the nut-shell of said weight part is pulverized, clay into power, place vacuum drying oven to dry processing, the control oven temperature dry 5 ~ 7 hours, is cooled to room temperature with it then at 110 ~ 130 ℃;
(2), initiator and SY-Monomer G, the vinylbenzene of said weight part is dissolved in the diluent ethanol, place subsequent use;
(3), will dry processing the nut-shell powder, reclaim PP and mix in proportion; Mixing solutions in the step (2) is poured into the nut-shell powder, reclaimed in the blend of PP; Obtain premix, premix is positioned in the air, and diluent ethanol is volatilized away;
(4), place parallel double-screw extruder to melt extrude moulding the premix that mixes;
Complete processing is following: the parallel double-screw extruder screw speed is 80 ~ 120r/min, 100 ~ 120 ℃ of district's temperature, 170 ~ 200 ℃ of two district's temperature; 170 ~ 200 ℃ of three district's temperature; 170 ~ 200 ℃ of four district's temperature, 170 ~ 200 ℃ of five district's temperature, 170 ~ 200 ℃ of six district's temperature; 170 ~ 200 ℃ of seven district's temperature, 160 ~ 180 ℃ of die head temperatures.
5. preparation method according to claim 3 is characterized in that said screw rod is shaped as single thread, and the ratio L/D of spiro rod length L and diameter D is 20 ~ 60.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103214867A (en) * | 2013-04-25 | 2013-07-24 | 楚雄中信塑木新型材料有限公司 | Plastic wood taking recycled plastics and walnut shells as base materials, and processing method of plastic wood |
| CN103437239A (en) * | 2013-08-20 | 2013-12-11 | 大连工业大学 | Organic treatment method of wood fiber paper pulp |
| CN103641964A (en) * | 2013-11-18 | 2014-03-19 | 李跃文 | Preparation method of mixed plastic/wood powder composite material |
| CN105062110A (en) * | 2015-07-31 | 2015-11-18 | 桂林理工大学 | Method for preparation of polypropylene based wood plastic composite material from walnut shell powder |
| CN108948630A (en) * | 2017-05-17 | 2018-12-07 | 济宁明升新材料有限公司 | A kind of reactive extrursion method improved polyalkene-lignin composite material and preparation method |
| CN111748150A (en) * | 2020-07-06 | 2020-10-09 | 苏州润佳工程塑料股份有限公司 | Recycled polypropylene material for vehicles and preparation method thereof |
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| 《高分子学报》 20120630 李跃文等 "GMA和共单体对聚乙烯木塑复合材料的直接反应增容" 621-627 1-5 , 第6期 * |
| 李跃文等: ""GMA和共单体对聚乙烯木塑复合材料的直接反应增容"", 《高分子学报》 * |
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| CN103437239A (en) * | 2013-08-20 | 2013-12-11 | 大连工业大学 | Organic treatment method of wood fiber paper pulp |
| CN103437239B (en) * | 2013-08-20 | 2015-04-22 | 大连工业大学 | Organic treatment method of wood fiber paper pulp |
| CN103641964A (en) * | 2013-11-18 | 2014-03-19 | 李跃文 | Preparation method of mixed plastic/wood powder composite material |
| CN105062110A (en) * | 2015-07-31 | 2015-11-18 | 桂林理工大学 | Method for preparation of polypropylene based wood plastic composite material from walnut shell powder |
| CN108948630A (en) * | 2017-05-17 | 2018-12-07 | 济宁明升新材料有限公司 | A kind of reactive extrursion method improved polyalkene-lignin composite material and preparation method |
| CN111748150A (en) * | 2020-07-06 | 2020-10-09 | 苏州润佳工程塑料股份有限公司 | Recycled polypropylene material for vehicles and preparation method thereof |
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Application publication date: 20121128 |