CN108410063A - A kind of automobile MODIFIED PP regrown material and preparation method thereof - Google Patents
A kind of automobile MODIFIED PP regrown material and preparation method thereof Download PDFInfo
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- CN108410063A CN108410063A CN201810262676.6A CN201810262676A CN108410063A CN 108410063 A CN108410063 A CN 108410063A CN 201810262676 A CN201810262676 A CN 201810262676A CN 108410063 A CN108410063 A CN 108410063A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The present invention provides a kind of automobile MODIFIED PP regrown material and preparation method thereof, making raw material includes：PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grades crushed material, PP copolymerization washing machine cylinders crushed material, PP are copolymerized high punching material grade crushed material, color masterbatch.The present invention also provides corresponding preparation methods, and by applying the preparation method, the automobile MODIFIED PP regrown material being prepared is with the advantages of performance stabilization, the physical properties such as impact strength and melt index are better than other single PP materials raw materials.The MODIFIED PP reworked material can be not only used for making anti-impact component in automobile door plate etc., pass through the further modified component that can be also used for making the high-impacts such as bumper.Automobile is modified user and is modified using material provided by the invention and method, and operation is simple, of low cost.
Description
Technical field
The present invention relates to technical field of polymer materials, and in particular to a kind of automobile MODIFIED PP regrown material and its preparation
Method.
Background technology
Polypropylene (Polypropylene, abbreviation PP) is small with density, heat resistance is good, mechanical property is balanced, cheap
The advantages that the third-largest versatile material as the world today after polyethylene, polyvinyl chloride, be widely used in electronics, machinery,
The industries such as daily necessities.Polypropylene is not only closely related with daily life, but also in oneself production through becoming industrial or agricultural not
The important materials that can lack.Global polypropylene total quantity consumed is 42,300,000 tons within 2011, and annual average compound growth rate 4.5% arrives
The year two thousand twenty, global polypropylene total quantity consumed prediction are up to 62,400,000 tons.However, along with the day of polypropylene production and consumption
Benefit increases, every year because waste and old polypropylene caused by huge consumption is also more and more, the recycling to these waste and old polypropylenes
As increasingly serious environment and social concern.In recent years, due to petroleum resources growing tension, polyacrylic price is floated
It is dynamic, therefore, the extensive concern and great attention of the recycling of waste and old polypropylene by countries in the world.
Polypropylene, which is widely used in, prepares electric type case material, automotive material or displaying frame material etc., and each period has
A large amount of old material, waste materials.Will produce a large amount of defective material or substandard products, recovery article in process of production, at present for waste material, defective material,
The processing of substandard products or recovery article is mainly the following method：
(1) burning or land-fill method generate the pernicious gases such as sulfur dioxide due to converging during the burning process, easily cause ring
Border is polluted, and takes land-fill method, wastes land resource, and the refractory organics of material can also cause environment prodigious harm, mesh
Preceding this mode is gradually eliminated：
(2) to the simple recycling pumping grain of waste electrical equipment shell material, defective material, substandard products or recovery article progress without any section
Technology is modified, and battle array grade uses for common plastics, although solving problem of environmental pollution, fails to make full use of these defective materials
Economic value, and poor material flows to market, it will serious consequence is generated, the appearance of the product of inferior quality is caused.
104774391 A of patent CN disclose a kind of waste and old polypropylene regeneration toughening modifying composition and preparation method thereof,
It discloses with metallocene PE elastomer, inorganic nano-filler, waste and old polypropylene, reinforcing aids R, compatilizer, lubricant, resist
Oxygen agent etc. is that objective composition is prepared through mixing and melt pelletization in raw material.The technical solution mainly passes through the sum of toughener
The selection of reinforcing aids and two step comminution granulations have obtained the waste and old polypropylene regenerative compositions with high tenacity.
102167877 A of patent CN disclose a kind of chain-extended regenerated polypropylene material, disclose to recycle polypropylene, connect
Branch agent, grafting catalysts, chain extender, antioxidant and light stabilizer are material, prepared by the preparation method provided by the patent
A kind of chain-extended regenerated polypropylene material is obtained, the molecular weight of recycling polypropylene material is improved by chain extending reaction, makes its physical machine
Tool performance is greatly improved.
The waste and old polypropylene of recycling is the primary raw material of regenerating polypropylene material, waste and old polypropylene derive from a wealth of sources and each other it
Between differ greatly, influenced using the performance of the polypropylene often regrown material on being finally prepared of separate sources,
So that the regenerating polypropylene material property level being prepared is uneven.However in the prior art to seldom relating to how to waste and old poly-
Propylene feedstocks are classified and are selected, and preparation and the practical application of polypropene recycled materials are unfavorable for.
Invention content
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, provide a kind of automobile modification
PP regrown materiaves and preparation method thereof.Automobile MODIFIED PP regrown material provided by the invention is stablized with performance, impact strength
And melt the advantages of physical properties such as finger are better than other single PP materials raw materials.The MODIFIED PP reworked material can be not only used for making vapour
Anti-impact component in door panel etc. passes through the further modified component that can be also used for making the high-impacts such as bumper.Automobile changes
Property user be modified using material provided by the invention and method, operation it is simple, of low cost.
The present invention provides a kind of automobile MODIFIED PP regrown material, making raw material includes：PP homopolymerization wire drawing grades crush
Material, PP homopolymerization injection grades crushed material, PP copolymerization washing machine cylinder crushed material, PP are copolymerized high punching material grade crushed material, color masterbatch.
Preferably, the making raw material of the automobile MODIFIED PP regrown material includes by weight：PP homopolymerization wire drawing grades
10-40 parts of crushed material, 14-40 parts of PP homopolymerizations injection grade crushed material, 10-50 parts of washing machine cylinder crushed material of PP copolymerization, PP copolymerization are high
5-15 parts of punching material grade crushed material, 1-2 parts of color masterbatch.
It is further preferred that the making raw material of the automobile MODIFIED PP regrown material includes by weight：PP homopolymerizations
25-40 parts of wire drawing grade crushed material, 14-35 parts of PP homopolymerizations injection grade crushed material, 20-50 parts of washing machine cylinder crushed material of PP copolymerization, PP
It is copolymerized high 5-15 parts of punching material grade crushed material, 1-2 parts of color masterbatch.
It is further preferred that the making raw material of the automobile MODIFIED PP regrown material includes by weight：PP is equal
10-40 parts of poly- wire drawing grade crushed material, 14-40 parts of PP homopolymerizations injection grade crushed material, PP copolymerization 10-50 parts of washing machine cylinder crushed material,
PP is copolymerized high 5-15 parts of punching material grade crushed material, 1-2 parts of color masterbatch, 2-5 parts of composite assistant.
In a preferred embodiment, the melt index of the PP homopolymerizations wire drawing grade crushed material be 6-10g/10min,
Impact strength ＞ 3KJ/m3；The melt index of the PP homopolymerizations injection grade crushed material is 10-15g/10min, impact strength ＞
3.5KJ/m3；The melt index of the PP copolymerization washing machine cylinder crushed material is 15-25g/10min, impact strength ＞ 5KJ/m3；Institute
It is 2-5g/10min, impact strength ＞ 25KJ/m to state PP and be copolymerized the melt index of high punching material grade crushed material3。
Preferably, the composite assistant is made of 2,6-di-tert-butyl p-cresol and calcium stearate.
In a preferred embodiment, in the composite assistant 2,6-di-tert-butyl p-cresol and calcium stearate weight
Amount portion rate is 1-2:2-4.
In a preferred embodiment, 2,6-di-tert-butyl p-cresol and calcium stearate in the composite assistant
Weight part ratio be 1:2.
The present invention also provides the preparation methods of the automobile MODIFIED PP regrown material, include the following steps：
(1) each raw material for standby is weighed according to parts by weight；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Preferably, the temperature of heating melting is 220-250 DEG C in step (3).
According to the monomer composition for participating in polymerization, polypropylene material can be divided into two kinds of homopolymer and copolymer.Homopolymerization poly- third
Alkene material is polymerized by single propylene monomer, vinyl monomer is free of in strand, therefore the regularity of strand is very high, material
Material has higher crystallinity high, mechanical strength and that is hot, but impact property is poor.Copolymer polypropylene material mainly passes through conjunction
At when a small amount of fluoride monomers be added form, there is higher impact strength.
PP homopolymerization wire drawing grade crushed materials, the i.e. waste material of the homopolymerization PP product of wire drawing grade obtain after the processing of broken and ball mill
Material.The homopolymerization PP product of common wire drawing grade has space bag, woven bag, stationery, fishing net etc., the present invention preferably implementing
It is 6-10g/10min, impact strength ＞ 3KJ/m that melt index is selected in scheme3PP homopolymerization wire drawing grade crushed materials.
PP homopolymerization injection grade crushed materials, the i.e. waste material of the homopolymerization PP product of injection grade obtain after the processing of broken and ball mill
Material.The homopolymerization PP product of common injection grade has beverage bottle, microwave stove, baby bottles etc., and the present invention is preferred real
It is 10-15g/10min, impact strength ＞ 3.5KJ/m to apply and select melt index in scheme3PP homopolymerization injection grade crushed materials.
PP is copolymerized washing machine cylinder crushed material, the i.e. washing machine drum made of recycling copolymer polypropylene material, through broken and ball
The material obtained after grinding machine processing.It is 15-25g/10min that the present invention selects melt index in preferred embodiments, impact
Intensity ＞ 5KJ/m3PP be copolymerized washing machine cylinder crushed material.
PP is copolymerized high punching material grade crushed material, i.e., the sheet material grade copolymer polypropylene material with high impact through broken and
The material obtained after ball mill processing.Sheet material stage polypropylene material refers to adding pp material in extruder or calender
The crystalline p p sheet for thickness in 0.1-2mm or so is squeezed or rolls after heat, fusing.The present invention selects in preferred embodiments
It is 2-5g/10min with melt index, impact strength ＞ 25KJ/m3PP be copolymerized high punching material grade crushed material.
The polypropylene waste material of separate sources has different physicochemical properties, and the present invention is by selecting specified weight number
The different material of ratio takes full advantage of the material characteristics of each raw material itself, and the automobile that performance stabilization has been prepared is modified
PP regrown materiaves.It finds in the course of the research, the composite assistant being made of 2,6-di-tert-butyl p-cresol and calcium stearate is added,
The performance of regenerating polypropylene material can be further increased.
Automobile MODIFIED PP regrown material provided by the invention has the following advantages：
(1) automobile MODIFIED PP regrown material provided by the invention is stablized with performance, impact strength and melt index etc.
Physical property is better than the advantages of other single PP materials raw materials；
(2) preparation method of automobile MODIFIED PP regrown material provided by the invention is easy to operate, of low cost；
(3) automobile MODIFIED PP regrown material provided by the invention can be not only used for making anti-impact portion in automobile door plate etc.
Part passes through the further modified component that can be also used for making the high-impacts such as bumper.
Specific implementation mode
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and
It is apparent.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.People in the art
Member it should be understood that without departing from the spirit and scope of the invention can to the details of technical solution of the present invention and form into
Row modifications or substitutions, but these modifications and replacement are each fallen in protection scope of the present invention.
The parameter of each crushed material used in specific implementation mode provided by the invention is as follows：PP homopolymerization wire drawing grades crush
The melt index of material is 6-10g/10min, impact strength ＞ 3KJ/m3；The melt index of PP homopolymerization injection grade crushed materials is 10-
15g/10min, impact strength ＞ 3.5KJ/m3；The melt index that PP is copolymerized washing machine cylinder crushed material is 15-25g/10min, rushes
Hit intensity ＞ 5KJ/m3；The melt index that PP is copolymerized high punching material grade crushed material is 2-5g/10min, impact strength ＞ 25KJ/m3。
Embodiment 1
(1) following raw material is weighed according to parts by weight：30 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
32 parts, 27 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 10 parts of punching material grade crushed material, 1 part of black masterbatch；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 230 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Embodiment 2
(1) following raw material is weighed according to parts by weight：40 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
14 parts, 40 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 5 parts of punching material grade crushed material, 1 part of black masterbatch；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 235 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Embodiment 3
(1) following raw material is weighed according to parts by weight：10 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
27 parts, 50 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 12 parts of punching material grade crushed material, 1 part of black masterbatch；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 230 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Embodiment 4
(1) following raw material is weighed according to parts by weight：25 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
32 parts, 27 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 15 parts of punching material grade crushed material, 1 part of black masterbatch, composite assistant 2
Part, wherein composite assistant is made of 2,6-di-tert-butyl p-cresol and calcium stearate, 2,6-di-tert-butyl p-cresol and stearic acid
The weight part ratio of calcium is 1:2；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 240 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Comparative example 1
(1) following raw material is weighed according to parts by weight：50 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
10 parts, 30 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 30 parts of punching material grade crushed material, 1 part of black masterbatch；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 230 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Comparative example 2
(1) following raw material is weighed according to parts by weight：30 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
32 parts, 27 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 10 parts of punching material grade crushed material, 1 part of black masterbatch, composite assistant 2
Part, wherein composite assistant is made of 2,6-di-tert-butyl p-cresol and calcium stearate, 2,6-di-tert-butyl p-cresol and stearic acid
The weight part ratio of calcium is 2:1；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 235 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Comparative example 3
(1) following raw material is weighed according to parts by weight：30 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
40 parts, 30 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 10 parts of punching material grade crushed material, 1 part of black masterbatch, calcium stearate 2
Part；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 240 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Comparative example 4
(1) following raw material is weighed according to parts by weight：30 parts of PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grade crushed materials
32 parts, 27 parts of PP copolymerization washing machine cylinder crushed material, PP be copolymerized high 10 parts of punching material grade crushed material, 1 part of black masterbatch, bis- tertiary fourths of 2,6-
2 parts of base paracresol；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting, is heated
The temperature of melting is 230 DEG C；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
Experimental example
The performance of embodiment 1-4 and comparative example 1-4 the regenerating polypropylene material granule being prepared is tested, melt
The test experience method of mass flow rate (melt mass flow rate, MFR) is carried out according to GB/T 3682-2000；Ash
The test experience method divided is carried out according to GB/T 12670-2008；The test experience method of impact strength is according to GB/T1843-
2008 carry out.Testing result is as follows：
| MFR(g/10min) | Ash content (%) | Impact strength (KJ/m3) | |
| Embodiment 1 | 15.00 | 3.08 | 7.5 |
| Embodiment 2 | 12.00 | 4.08 | 4.5 |
| Embodiment 3 | 16.05 | 5.90 | 8.5 |
| Embodiment 4 | 13.20 | 4.75 | 10.0 |
| Comparative example 1 | 8.04 | 4.65 | 3.6 |
| Comparative example 2 | 11.52 | 5.77 | 4.5 |
| Comparative example 3 | 9.05 | 4.20 | 3.2 |
| Comparative example 4 | 9.36 | 5.22 | 3.5 |
The technical means disclosed in the embodiments of the present invention is not limited to the technical means disclosed in the above technical means, and further includes
By the above technical characteristic arbitrarily the formed technical solution of combination.The above is the specific implementation mode of the present invention, should be referred to
Go out, for those skilled in the art, without departing from the principle of the present invention, can also make several
Improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a kind of automobile MODIFIED PP regrown material, which is characterized in that the making of the automobile MODIFIED PP regrown material is former
Material includes：PP homopolymerization wire drawing grades crushed material, PP homopolymerization injection grades crushed material, PP copolymerization washing machine cylinders crushed material, PP are copolymerized Gao Chong
Sheet material grade crushed material, color masterbatch.
2. automobile MODIFIED PP regrown material described in accordance with the claim 1, which is characterized in that the automobile MODIFIED PP is again
The making raw material of green material includes by weight：10-40 parts of PP homopolymerization wire drawings grade crushed material, PP homopolymerization injection grade crushed materials
14-40 parts, 10-50 part of washing machine cylinder crushed material of PP copolymerization, high 5-15 parts of the punching material grade crushed material of PP copolymerization, 1-2 parts of color masterbatch.
3. automobile MODIFIED PP regrown material described in accordance with the claim 1, which is characterized in that the automobile MODIFIED PP is again
The making raw material of green material includes by weight：25-40 parts of PP homopolymerization wire drawings grade crushed material, PP homopolymerization injection grade crushed materials
14-35 parts, 20-50 part of washing machine cylinder crushed material of PP copolymerization, high 5-15 parts of the punching material grade crushed material of PP copolymerization, 1-2 parts of color masterbatch.
4. automobile MODIFIED PP regrown material described in accordance with the claim 1, which is characterized in that the automobile MODIFIED PP is again
The making raw material of green material includes by weight：10-40 parts of PP homopolymerization wire drawings grade crushed material, PP homopolymerization injection grade crushed materials
14-40 parts, 10-50 part of washing machine cylinder crushed material of PP copolymerization, PP be copolymerized high 5-15 parts of punching material grade crushed material, 1-2 parts of color masterbatch, answer
Close 2-5 parts of auxiliary agent.
5. automobile MODIFIED PP regrown material according to claim 4, which is characterized in that the composite assistant is by 2,6-
Di-tert-butyl p-cresol and calcium stearate composition.
6. automobile MODIFIED PP regrown material according to claim 5, which is characterized in that 2,6- bis- in the composite assistant
The weight part ratio of Butylated Hydroxytoluene and calcium stearate is 1-2:2-4.
7. automobile MODIFIED PP regrown material according to claim 5, which is characterized in that 2,6- bis- in the composite assistant
The weight part ratio of Butylated Hydroxytoluene and calcium stearate is 1:2.
8. the preparation method of automobile MODIFIED PP regrown material described in accordance with the claim 1, which is characterized in that including walking as follows
Suddenly：
(1) each raw material for standby is weighed；
(2) raw material got ready input blender is sufficiently stirred；
(3) after comminutor is preheated, the raw material being stirred is put into granulation machine with feeder and carries out heating melting；
(4) melting charge is dried up through Screw Extrusion, wire drawing after supercooled water cools down, and particle is cut out by pelleter.
9. the preparation method of automobile MODIFIED PP regrown material according to claim 8, which is characterized in that in step (3)
The temperature of heating melting is 220-250 DEG C.
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| CN201810262676.6A CN108410063B (en) | 2018-03-28 | 2018-03-28 | Modified PP recycled material for automobiles and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111171454A (en) * | 2020-03-06 | 2020-05-19 | 厦门诚斌塑胶制品有限公司 | Novel anti-aging PP hollow plate and preparation method thereof |
| CN111218067A (en) * | 2020-03-05 | 2020-06-02 | 厦门诚斌塑胶制品有限公司 | Novel PP hollow plate and preparation method thereof |
| CN114539678A (en) * | 2022-03-22 | 2022-05-27 | 天津金发新材料有限公司 | Energy-saving regenerated polypropylene composite material and preparation method thereof |
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