CN104693595A - Recycled material used for preparing vehicle bumper and preparation method of recycled material - Google Patents
Recycled material used for preparing vehicle bumper and preparation method of recycled material Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2323/12—Polypropene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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Abstract
The invention relates to a recycled material used for preparing a vehicle bumper and a preparation method of the recycled material. The recycled material used for preparing the vehicle bumper is prepared from regenerated polypropylene, regenerated polyethylene, a toughening agent, an inorganic mineral filler, a crosslinking agent, an antioxidant and a processing aid. The recycled material provided by the invention has the advantages that strength, rigidity, toughness and heat resistance can be improved at the same time, and the recycled material can be applied to production of the vehicle bumper, so that application range of the recycled material is expanded, use value of the recycled material is improved, and pollution of waste plastic on the environment is reduced; and besides, cost for obtaining the vehicle bumper by adopting the recycled material can be greatly reduced compared with the cost for obtaining the vehicle bumper by adopting a new raw material.
Description
Technical field
The invention belongs to technical field of composite materials, be specifically related to a kind of twice-laid stuff for the preparation of bumper and preparation method thereof.
Background technology
In the last few years, along with the continuous progress of macromolecule synthesising technology, plastics industry obtained development at full speed, and increasing plastics enter our visual field, and became people and to live indispensable material.But also bring very large negative impact to us, due to the sharply increase of waste plastic amount, a large amount of white pollutions, municipal wastes mine etc. constantly appear in our life simultaneously.The recycling of waste or used plastics is an important content of developing a circular economy always, is also the important channel realizing Sustainable development that country advocates.
At present, waste or used plastics obtains application to a certain extent, but according to correlation report display, the annual nearly 1400T waste or used plastics of China is not recycled utilization, and regeneration rate only has 25%, and direct resources loss is up to 280 hundreds of millions/year.Although change the purposes of waste or used plastics to a certain extent through simple regeneration or blended reprocessed plastic(s), but there is a lot of defect: as comparatively large in caused the performance loss such as intensity, hardness, impelling strength, thermotolerance of material because of the degradation with aging of material, and then affect its application.And have that light weight, intensity are low, the problem such as poor stability, poor processability
Summary of the invention
Object of the present invention is just to provide a kind of twice-laid stuff for the preparation of bumper and preparation method thereof, significantly can reduce costs, improve the use value of reprocessed plastic(s) when meeting product performance and requiring.
For achieving the above object, the technical solution used in the present invention is: a kind of twice-laid stuff for the preparation of bumper, is prepared from by weight by following component:
Regenerating polypropylene 55 ~ 75;
Regenerated polythene 10 ~ 25;
Toughner 0 ~ 15;
Inorganic mineral filler 5 ~ 25;
Linking agent 1.5 ~ 3;
Oxidation inhibitor 0.2 ~ 0.8
Processing aid 0.2 ~ 2.
Described regenerating polypropylene is injection grade polypropylene, and its combustion residue is less than 4%, and the melting index under under 230 DEG C/2.16kg condition is 15-40 g/10min.
The combustion residue of described regenerated polythene is less than 3%, and its melting index under 190 DEG C/2.16kg condition is 0.5-3 g/10min.
Described toughner be selected from ethene-octene copolymer (POE), terpolymer EP rubber (EPDM), ethylene-butene copolymer, vinylbenzene-divinyl-styrene block copolymer (SBS), ethylene-vinyl acetate copolymer (EVA) any one.
The particle diameter of described inorganic mineral filler is greater than 1200 orders, and it is selected from any one in talcum powder, calcium carbonate or mica.
Described linking agent is silane crosslinker.
Described silane crosslinker is made up of with di-n-butyltin dilaurate vinyltrimethoxy silane, dicumyl peroxide (DCP).
Described oxidation inhibitor is the composite formation of 1:2 in mass ratio by four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (1010) and tricresyl phosphite (2,4-di-tert-butyl-phenyl) ester (168).
Described processing aid is made up of for 1:1 is composite in mass ratio white mineral oil and ethylene bis stearamide (EBS).
Another object of the present invention is to provide a kind of method preparing the above-mentioned material for bumper, comprises the following steps:
(1) silane crosslinker is prepared: 1.4-2.8 part vinyltrimethoxy silane, 0.05-0.3 part dicumyl peroxide (DCP) are carried out being uniformly mixed obtained silane crosslinker with 0.05-0.2 part di-n-butyltin dilaurate;
(2) regenerating polypropylene, regenerated polythene, silane crosslinker, oxidation inhibitor are poured in temperature control high-speed mixer by proportioning mix 5-10min, obtain the mixture of precrosslink, the temperature of described mixing machine is 75-90 DEG C, rotating speed is 500-2000r/min;
(3) again mix 2-3min after adding inorganic mineral filler, processing aid, toughner in the mixture of the precrosslink in (2), obtain Preblend, the rotating speed of mixing machine is 500-1000r/min;
(4) first preheat 2 ~ 4 minutes by (3) in Preblend feeding twin screw extruder, then through vacuumizing, extruding, water-cooled, pelletizing and drying, namely obtain the material for bumper; Wherein the rotating speed of twin screw extruder is 300 ~ 500 revs/min, and temperature is 160 ~ 165 DEG C, pre-tabetisol, 175 ~ 180 DEG C, the first melting zone, 185 ~ 195 DEG C, the first shear at high temperature district, 200 ~ 210 DEG C, the second shear at high temperature district, the second melting warm area 190 ~ 195 DEG C, discharge port melting warm area 190 ~ 200 DEG C.
The present invention compared with prior art has following advantages:
(1) linking agent decomposes generation free radical at a certain temperature, cause between regenerating polypropylene and regenerated polythene macromole and chemical crosslink reaction occurs, chemical bond is formed between macromolecular chain, form netted three dimensional structure, thus make the intensity of the finished product, rigidity, toughness, thermotolerance Performance comparision excellent, expand the use range of reprocessed plastic(s);
(2) reduce waste or used plastics to the pollution of environment, promote reprocessed plastic(s) and be worth;
(3) significantly can reduce costs when performance loss is little compared with use new raw material
(4) wide material sources of selecting materials, it is convenient to collect, and material fabrication process is reasonable, technique is simple, safety and environmental protection;
Embodiment
Below in conjunction with embodiment, the invention will be further described, and following examples are only that the present invention will be described but not are limited it.
In an embodiment, the testing method of each physical property is as follows respectively:
Melt flow rate (MFR) is tested according to GB/T 3682-2000
Tensile strength, elongation at break are measured according to GB/T 1040.2-2006;
Flexural strength, modulus in flexure are measured according to GB/T 9341-2008;
Izod notched impact strength is measured according to GB/T 1843-2008;
Load deformation temperature is measured according to GB/T 1634.2-2004;
Shrinking percentage is by measuring square plate initial length and the contracted length acquisition of injection moulding after 24 hours, and its unit is 1/100.Wherein square plate adopts self-control injection mold, and mold cavity original length is 60.30mm × 60.30mm × 2mm.
In embodiment use oxidation inhibitor to be the composite formation of 1:2 in mass ratio by four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (1010) and tricresyl phosphite (2,4--di-tert-butyl-phenyl) ester (168).
Described processing aid is made up of for 1:1 is composite in mass ratio white mineral oil and ethylene bis stearamide (EBS).
embodiment 1
By vinyltrimethoxy silane 2 parts, dicumyl peroxide (DCP) 0.3 part, di-n-butyltin dilaurate 0.2 part, carry out being uniformly mixed obtained silane crosslinker; Regenerating polypropylene 75 parts, regenerated polythene 15 parts, 0.4 part, oxidation inhibitor are put into temperature control high-speed mixer mixing 6min, and temperature controls at 80 DEG C, rotating speed 800r/min; Then 10 parts, inorganic mineral filler calcium carbonate, processing aid 0.6 part are added in material, and continue to stir 3min in high-speed mixer, obtain Preblend, the rotating speed of its mixing machine is 600 revs/min.Again Preblend is fed in twin screw extruder, extrude through vacuumizing after preheating 3 minutes, water-cooled, pelletizing, drying, mixing, the twice-laid stuff for the preparation of bumper can be obtained, wherein 160 DEG C, the pre-tabetisol of forcing machine, the first 175 DEG C, melting zone, the first 185 DEG C, shear at high temperature district, second 200 DEG C, shear at high temperature district, second melting warm area 195 DEG C, discharge port melting warm area 190 DEG C, screw speed is 300 revs/min.
embodiment 2
By vinyltrimethoxy silane 1.4 parts, dicumyl peroxide (DCP) 0.05 part, di-n-butyltin dilaurate 0.05 part, carry out being uniformly mixed obtained silane crosslinker; Regenerating polypropylene 55 parts, regenerated polythene 10 parts, 0.4 part, oxidation inhibitor are put into temperature control high-speed mixer mixing 8min, and temperature controls at 75 DEG C, rotating speed 1200r/min; Then inorganic mineral filler talcum powder 25 parts, toughner EPDM10 part, processing aid 2 parts are added in material, and continue to stir 3min in high-speed mixer, obtain Preblend, the rotating speed of its mixing machine is 800 revs/min.Again Preblend being fed in twin screw extruder, extruding through vacuumizing after preheating 4 minutes, water-cooled, pelletizing, drying, mixing, the twice-laid stuff for the preparation of bumper can be obtained.Wherein 160 DEG C, the pre-tabetisol of forcing machine, the first 175 DEG C, melting zone, the first 190 DEG C, shear at high temperature district, the second 205 DEG C, shear at high temperature district, the second melting warm area 195 DEG C, discharge port melting warm area 190 DEG C, screw speed is 400 revs/min.
embodiment 3
By vinyltrimethoxy silane 2.5 parts, dicumyl peroxide (DCP) 0.2 part, di-n-butyltin dilaurate 0.1 part, carry out being uniformly mixed obtained silane crosslinker; Regenerating polypropylene 60 parts, regenerated polythene 20 parts, 0.2 part, oxidation inhibitor are put into temperature control high-speed mixer mixing 10min, and temperature controls at 85 DEG C, rotating speed 1500r/min; Then 15 parts, inorganic mineral filler calcium carbonate, toughner SBS 5 parts, processing aid 0.8 part are added in material, and continue to stir 2min in high-speed mixer, obtain Preblend, the rotating speed of its mixing machine is 500 revs/min.Again Preblend being fed in twin screw extruder, extruding through vacuumizing after preheating 3 minutes, water-cooled, pelletizing, drying, mixing, the twice-laid stuff for the preparation of bumper can be obtained.Wherein 165 DEG C, the pre-tabetisol of forcing machine, the first 175 DEG C, melting zone, the first 195 DEG C, shear at high temperature district, the second 210 DEG C, shear at high temperature district, the second melting warm area 195 DEG C, discharge port melting warm area 200 DEG C, screw speed is 500 revs/min.
embodiment 4
By vinyltrimethoxy silane 1.8 parts, dicumyl peroxide (DCP) 0.15 part, di-n-butyltin dilaurate 0.1 part, carry out being uniformly mixed obtained silane crosslinker; Regenerating polypropylene 60 parts, regenerated polythene 10 parts, 0.4 part, oxidation inhibitor are put into temperature control high-speed mixer mixing 5min, and temperature controls at 90 DEG C, rotating speed 500r/min; Then inorganic mineral filler mica powder 15 parts, toughner POE 15 parts, processing aid 1.2 parts are added in material, and continue to stir 3min in high-speed mixer, obtain Preblend, the rotating speed of its mixing machine is 700 revs/min.Again Preblend being fed in twin screw extruder, extruding through vacuumizing after preheating 3 minutes, water-cooled, pelletizing, drying, mixing, the twice-laid stuff for the preparation of bumper can be obtained.Wherein 165 DEG C, the pre-tabetisol of forcing machine, the first 175 DEG C, melting zone, the first 190 DEG C, shear at high temperature district, the second 200 DEG C, shear at high temperature district, the second melting warm area 195 DEG C, discharge port melting warm area 190 DEG C, screw speed is 350 revs/min.
embodiment 5
By vinyltrimethoxy silane 2.3 parts, dicumyl peroxide (DCP) 0.25 part, di-n-butyltin dilaurate 0.05 part, carry out being uniformly mixed obtained silane crosslinker; Regenerating polypropylene 70 parts, regenerated polythene 10 parts, 0.8 part, oxidation inhibitor are put into temperature control high-speed mixer mixing 7min, and temperature controls at 90 DEG C, rotating speed 1800r/min; Then 20 parts, inorganic mineral filler calcium carbonate, processing aid 1.6 parts are added in material, and continue to stir 3min in high-speed mixer, obtain Preblend, the rotating speed of its mixing machine is 1000 revs/min.Again Preblend being fed in twin screw extruder, extruding through vacuumizing after preheating 3 minutes, water-cooled, pelletizing, drying, mixing, the twice-laid stuff for the preparation of bumper can be obtained.Wherein 165 DEG C, the pre-tabetisol of forcing machine, the first 180 DEG C, melting zone, the first 190 DEG C, shear at high temperature district, the second 200 DEG C, shear at high temperature district, the second melting warm area 195 DEG C, discharge port melting warm area 190 DEG C, screw speed is 450 revs/min.
embodiment 6
By vinyltrimethoxy silane 2.8 parts, dicumyl peroxide (DCP) 0.15 part, di-n-butyltin dilaurate 0.05 part, carry out being uniformly mixed obtained silane crosslinker; Regenerating polypropylene 60 parts, regenerated polythene 25 parts, 0.5 part, oxidation inhibitor are put into temperature control high-speed mixer mixing 6min, and temperature controls at 90 DEG C, rotating speed 2000r/min; Then inorganic mineral filler talcum powder 5 parts, toughner EVA 10 parts, processing aid 0.2 part are added in material, and continue to stir 2min in high-speed mixer, obtain Preblend, the rotating speed of its mixing machine is 600 revs/min.Again Preblend being fed in twin screw extruder, extruding through vacuumizing after preheating 3 minutes, water-cooled, pelletizing, drying, mixing, the twice-laid stuff for the preparation of bumper can be obtained.Wherein 165 DEG C, the pre-tabetisol of forcing machine, the first 175 DEG C, melting zone, the first 190 DEG C, shear at high temperature district, the second 200 DEG C, shear at high temperature district, the second melting warm area 190 DEG C, discharge port melting warm area 190 DEG C, screw speed is 400 revs/min.
comparative example:
Regenerating polypropylene 60 parts, regenerated polythene 10 parts, 0.4 part, oxidation inhibitor are put into temperature control high-speed mixer mixing 5min, and temperature controls at 90 DEG C, rotating speed 1000r/min; Then inorganic mineral filler talcum powder 20 parts, toughner POE 10 parts, processing aid 0.8 part are added in material, and continue to stir 3min in high-speed mixer, obtain Preblend, the rotating speed of its mixing machine is 700 revs/min.Again Preblend being fed in twin screw extruder, extruding through vacuumizing after preheating 3 minutes, water-cooled, pelletizing, drying, mixing, can twice-laid stuff be obtained.Wherein 165 DEG C, the pre-tabetisol of forcing machine, the first 175 DEG C, melting zone, the first 190 DEG C, shear at high temperature district, the second 200 DEG C, shear at high temperature district, the second melting warm area 195 DEG C, discharge port melting warm area 190 DEG C, screw speed is 350 revs/min.
Following table one is the concrete proportioning situation of each component of above-described embodiment 1-6 and comparative example:
Table one:
| Material | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example |
| Regenerating polypropylene | 75 | 55 | 60 | 60 | 70 | 60 | 60 |
| Regenerated polythene | 15 | 10 | 20 | 10 | 10 | 25 | 10 |
| Elastomerics POE | 15 | 10 | |||||
| EPDM | 10 | ||||||
| SBS | 5 | ||||||
| EVA | 10 | ||||||
| Calcium carbonate | 10 | 15 | 20 | ||||
| Talcum powder | 25 | 5 | 20 | ||||
| Mica powder | 15 | ||||||
| Vinyltrimethoxy silane | 2 | 1.4 | 2.5 | 1.8 | 2.3 | 2.8 | |
| Dicumyl peroxide (DCP) | 0.3 | 0.05 | 0.2 | 0.15 | 0.25 | 0.15 | |
| Di-n-butyltin dilaurate | 0.2 | 0.05 | 0.1 | 0.1 | 0.05 | 0.05 | |
| Oxidation inhibitor | 0.4 | 0.4 | 0.2 | 0.4 | 0.8 | 0.5 | 0.4 |
| Processing aid | 0.6 | 2 | 0.8 | 1.2 | 1.6 | 0.2 | 0.8 |
Carry out physical property detection to the product that above-described embodiment 1-6 and comparative example obtain respectively, its performance is as shown in following table two:
Table two:
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative example |
| Melt finger/g/10min | 14.2 | 12.7 | 17.5 | 19.8 | 11.8 | 16.8 | 14.5 |
| Tensile strength/MPa | 23.5 | 19.4 | 22.9 | 21.3 | 24.6 | 22.2 | 18.3 |
| Elongation at break/% | 98 | 48 | 56 | 78 | 75 | 80 | 88 |
| Flexural strength/MPa | 32.3 | 32.9 | 34.2 | 31.8 | 32.1 | 34.3 | 25.4 |
| Modulus in flexure/MPa | 1422 | 1965 | 1586 | 1688 | 1729 | 1432 | 988 |
| Socle girder breach punching/kJ/m2 | 36 | 26 | 31 | 29 | 27 | 33 | 16 |
| Load deformation temperature/DEG C | 125 | 138 | 129 | 122 | 132 | 126 | 103 |
| Shrinking percentage/% | 1.29 | 1.05 | 1.22 | 1.18 | 1.15 | 1.31 | 1.16 |
As can be seen from table two embodiment result, carry out the crosslinked made material obtained by specific reprocessed plastic(s) combination, than the material using General Physics modification, there is good fluidity of molten, good rigidity, toughness and intensity and thermotolerance, can be used for production low and middle-end bumper.In addition the twice-laid stuff that the present invention selects is originated comparatively wide, and production technique is simple, saves production cost greatly.And embodiment 4 is compared with comparative example, its intensity, toughness are significantly improved, and improve its thermotolerance, as tensile strength adds 16%, flexural strength adds 25%, and modulus in flexure adds 50%, shock strength adds 81%, and load deformation temperature improves 18%.
These embodiments only should not limit the scope of this invention for illustration of the present invention.In addition, after having read content of the present invention, those skilled in the art have made change or the amendment of the various equivalent form of value to the present invention, and these equivalent form of values belong to claims limited range of the application equally.
Claims (10)
1. for the preparation of a twice-laid stuff for bumper, it is characterized in that: be prepared from by weight by following component:
Regenerating polypropylene 55 ~ 75;
Regenerated polythene 10 ~ 25;
Toughner 0 ~ 15;
Inorganic mineral filler 5 ~ 25;
Linking agent 1.5 ~ 3;
Oxidation inhibitor 0.2 ~ 0.8
Processing aid 0.2 ~ 2.
2. the twice-laid stuff for the preparation of bumper according to claim 1, it is characterized in that: described regenerating polypropylene is injection grade polypropylene, its combustion residue is less than 4%, and the melting index under under 230 DEG C/2.16kg condition is 15-40 g/10min.
3. the twice-laid stuff for the preparation of bumper according to claim 1, is characterized in that: the combustion residue of described regenerated polythene is less than 3%, and its melting index under 190 DEG C/2.16kg condition is 0.5-3 g/10min.
4. the twice-laid stuff for the preparation of bumper according to claim 1, is characterized in that: described toughner is selected from ethene-octene copolymer, terpolymer EP rubber, ethene-butylene copolymer, vinylbenzene-divinyl-styrene block copolymer, ethylene-vinyl acetate copolymer a kind of.
5. the twice-laid stuff for the preparation of bumper according to claim 1, is characterized in that: the particle diameter of described inorganic mineral filler is greater than 1200 orders, and it is selected from any one in talcum powder, calcium carbonate or mica.
6. the twice-laid stuff for the preparation of bumper according to claim 1, is characterized in that: described linking agent is silane crosslinker.
7. the material for bumper according to claim 6, is characterized in that: described silane crosslinker is made up of vinyltrimethoxy silane, dicumyl peroxide and di-n-butyltin dilaurate.
8. the twice-laid stuff for the preparation of bumper according to claim 1, it is characterized in that: described oxidation inhibitor is by four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and tricresyl phosphite (2,4--di-tert-butyl-phenyl) ester be the composite formation of 1:2 in mass ratio.
9. the twice-laid stuff for the preparation of bumper according to claim 1, is characterized in that: described processing aid is made up of for 1:1 is composite in mass ratio white mineral oil and ethylene bis stearamide.
10. prepare as claimed in claim 1 for the preparation of a twice-laid stuff for bumper, it is characterized in that: comprise the following steps:
(1) silane crosslinker is prepared: 1.4-2.8 part vinyltrimethoxy silane, 0.05-0.3 part dicumyl peroxide (DCP) are carried out being uniformly mixed obtained silane crosslinker with 0.05-0.2 part di-n-butyltin dilaurate;
(2) regenerating polypropylene, regenerated polythene, silane crosslinker, oxidation inhibitor are poured in temperature control high-speed mixer by proportioning mix 5-10min, obtain the mixture of precrosslink, the temperature of described mixing machine is 75-90 DEG C, rotating speed is 500-2000r/min;
(3) again mix 2-3min after adding inorganic mineral filler, processing aid, toughner in the mixture of the precrosslink in (2), obtain Preblend, the rotating speed of mixing machine is 500-1000r/min;
(4) first preheat 2 ~ 4 minutes by (3) in Preblend feeding twin screw extruder, then through vacuumizing, extruding, water-cooled, pelletizing and drying, namely obtain the material for bumper; Wherein the rotating speed of twin screw extruder is 300 ~ 500 revs/min, and temperature is 160 ~ 165 DEG C, pre-tabetisol, 175 ~ 180 DEG C, the first melting zone, 185 ~ 195 DEG C, the first shear at high temperature district, 200 ~ 210 DEG C, the second shear at high temperature district, the second melting warm area 190 ~ 195 DEG C, discharge port melting warm area 190 ~ 200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310665275.2A CN104693595A (en) | 2013-12-10 | 2013-12-10 | Recycled material used for preparing vehicle bumper and preparation method of recycled material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310665275.2A CN104693595A (en) | 2013-12-10 | 2013-12-10 | Recycled material used for preparing vehicle bumper and preparation method of recycled material |
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| Publication Number | Publication Date |
|---|---|
| CN104693595A true CN104693595A (en) | 2015-06-10 |
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| CN105237881A (en) * | 2015-11-06 | 2016-01-13 | 沈阳化工大学 | Toughening modified recycled polypropylene micro-crosslinking master batch and preparation method thereof |
| CN108148247A (en) * | 2017-12-29 | 2018-06-12 | 张永光 | A kind of preparation method of polyethylene and its polyethylene being prepared |
| CN108148235A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of polyethylene filler parent granule and preparation method thereof |
| CN109294185A (en) * | 2018-09-10 | 2019-02-01 | 武汉金发科技有限公司 | A kind of automotive bumper material and the preparation method and application thereof |
| CN112143094A (en) * | 2019-06-28 | 2020-12-29 | 合肥杰事杰新材料股份有限公司 | Regenerated polyolefin plastic composition and preparation method and application thereof |
| CN113789027A (en) * | 2021-01-04 | 2021-12-14 | 海信（山东）冰箱有限公司 | Heat-resistant regenerated polypropylene material and preparation method thereof |
| EP3802689B1 (en) | 2018-05-24 | 2022-04-27 | TotalEnergies One Tech Belgium | Process to produce polypropylene-based composition from post-consumer resins and articles made of said compositions |
| CN115216091A (en) * | 2022-09-15 | 2022-10-21 | 江苏中天科技股份有限公司 | Regenerated environment-friendly filling material for optical cable and preparation method thereof |
| EP3622017B1 (en) | 2017-05-08 | 2023-01-25 | Borealis AG | Pp-rich material composition having high stiffness and processability |
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| CN105237881A (en) * | 2015-11-06 | 2016-01-13 | 沈阳化工大学 | Toughening modified recycled polypropylene micro-crosslinking master batch and preparation method thereof |
| CN108148235A (en) * | 2016-12-05 | 2018-06-12 | 合肥杰事杰新材料股份有限公司 | A kind of polyethylene filler parent granule and preparation method thereof |
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| CN112143094B (en) * | 2019-06-28 | 2022-04-26 | 合肥杰事杰新材料股份有限公司 | Regenerated polyolefin plastic composition and preparation method and application thereof |
| CN113789027A (en) * | 2021-01-04 | 2021-12-14 | 海信（山东）冰箱有限公司 | Heat-resistant regenerated polypropylene material and preparation method thereof |
| CN115216091A (en) * | 2022-09-15 | 2022-10-21 | 江苏中天科技股份有限公司 | Regenerated environment-friendly filling material for optical cable and preparation method thereof |
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