CN107903509A - Outer plate material of a kind of overall plastic tail-gate of automobile and preparation method thereof - Google Patents
Outer plate material of a kind of overall plastic tail-gate of automobile and preparation method thereof Download PDFInfo
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- CN107903509A CN107903509A CN201711102949.2A CN201711102949A CN107903509A CN 107903509 A CN107903509 A CN 107903509A CN 201711102949 A CN201711102949 A CN 201711102949A CN 107903509 A CN107903509 A CN 107903509A
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- parts
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- overall plastic
- plate material
- outer plate
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
-
- 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 & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of automobile tail gate material and preparation method thereof, outer plate material of especially a kind of overall plastic tail-gate of automobile and preparation method thereof.The material of the present invention includes the component of following parts by weight：50 70 parts of polypropylene, 10 40 parts of reinforcement, 3 15 parts of toughener, 0.2 1 parts of bridging agent, 3 10 parts of compatilizer, 0.2 0.5 parts of nucleator, 0.3 1 parts of antioxidant, 0.3 1 parts of lubricant.The present invention is using low-gravity high intensity organic fiber as polypropylene molecular chain motion inhibitor, limit polypropylene material thermal expansion, the high-strength polypropylene material with low coefficient of linear thermal expansion characteristic is prepared for, while meeting automobile overall plastic tail-gate material requirements, realizes automotive light weight technology.In addition, the present invention has high flowing, without floating fine, high apparent, easy spraying, low warpage, rapid shaping characteristic, parts assembling manufacturing cost is reduced；Also there is low smell, low VOC, vehicle air quality can be effectively improved.
Description
Technical field
The present invention relates to a kind of automobile tail gate material and preparation method thereof, the outer plate material of especially a kind of overall plastic tail-gate of automobile
And preparation method thereof, belong to field of material technology.
Background technology
In recent years, car is looked forward in hybrid power system, fuel-cell vehicle, engine technology, body lightening etc. etc. all
Have large improvement.Wherein automotive light weight technology is the field that car enterprise pays close attention to.Modified plastics conduct can reach lightweight effect
Fruit, and the material of cost can be reduced, it is always preferred material of numerous car enterprises in lightweight exploration.
The discharge of Europe six in 2014 is implemented, and the carbon emission target of the year two thousand twenty or even the carbon emission target of the year two thousand fifty are to put
A ridge in face of major main engine plants.In order to meet relevant standard, each main engine plants and its supplier constantly carry out lightweight
Explore.By taking automobile tail gate as an example, the material of automobile tail gate is via conventional steel tail-gate, through composite material tail-gate to overall plastic tail-gate
Direction develop.For one integral piece loss of weight more than 40%, production efficiency also has the lifting of matter.It is commonly designed, the inner panel of overall plastic tail-gate uses
The PP (LGF+PP) or SMC material of long glass fiber reinforced, outside plate and spoiler use ABS or PC/ABS, and component is all using note
Technological forming is moulded, is then assembled using coating technique.Wherein, it is crucial that linear thermal expansion system between a variety of materials
Number matching, directly concerns whole tail-gate installation and its rear service life, even vehicle safety.Compared with PC/ABS, polypropylene
(PP) proportion and cost advantage are had more, however, plain polypropylene material thermal linear expansion coefficient is 150 × 10-6~200 × 10- 6Mm/mm ﹒ K, and inner plate structure material thermal linear expansion coefficient is 15 × 10-6~25 × 10-6Mm/mm ﹒ K, the two difference is too big,
It can not realize that effective dimensions matches, limit its use.In order to solve this problem, in recent years, exploration is done,
For example 102206373 A of CN are mentioned and are used talcum powder to be filled modification to polypropylene for the inorganic filler master batch of main component
Reduce polypropylene thermal linear expansion coefficient；102276922 A of patent CN use high length-diameter ratio inorganic filler, such as wollastonite
Deng being filled modification to polypropylene, reduce polypropylene thermal linear expansion coefficient；But above method is realizing that polypropylene is low
While linear expansion coefficient performance, density of material is further increased, adds product weight, to automobile tail gate lightweight not
Profit.Patent CN 102924806A are modified polypropylene with short glass fiber using superfine talcum powder, are prepared for having low
The problems such as linear expansion coefficient polypropylene material, such a method equally exists increase density of material and tail-gate product weight increase,
It is difficult also to occur superfine talcum powder charging in modified polypropylene material production process, difficulties in dispersion, production efficiency decline, vapour
Surface floating fiber in tailstock door injection moulding process, be difficult to the problems such as spraying.
The content of the invention
To solve problem above, the present invention has high flowing, without floating fine, high apparent, easy spraying, low warpage, rapid shaping
Characteristic, reduces parts assembling manufacturing cost；Also there is low smell, low VOC, vehicle air can be effectively improved
Quality.To achieve the above object, the present invention adopts the following technical scheme that：
A kind of outer plate material of overall plastic tail-gate of automobile, raw material are made of the component of following parts by weight：
50-70 parts of polypropylene
10-40 parts of reinforcement
3-15 parts of toughener
0.2-1 parts of bridging agent
3-10 parts of compatilizer
0.2-0.5 parts of nucleator
0.3-1 parts of antioxidant
0.3-1 parts of lubricant
Further, the polypropylene is ethylene-propylene copolymer, melt index 20-100g/10min, preferably
50-80g/10min；
Further, the reinforcement is organic fiber, the chopped organic fiber of preferred length≤3mm, more preferably
The ultrashort of length≤1mm cuts organic fiber, such as, polyester fiber, Fypro, polyacrylonitrile fibre, aramid fiber etc..
Further, the toughener is ethylene-octene copolymer, EPR ternary rubber, linear low density polyethylene, benzene
A kind of one kind in ethylene-butadiene-styrene copolymer, hydrogenated styrene-butadiene-styrene copolymer, preferably
Ethylene-octene copolymer；
Further, the bridging agent be cumyl peroxide, it is di-t-butyl peroxide, dibenzoyl peroxide, double
One kind in tert-butyl hydroperoxide diisopropyl benzene, preferably cumyl peroxide；
Further, the compatilizer is one kind in maleic anhydride inoculated polypropylene, maleic anhydride grafted polyethylene, excellent
Select maleic anhydride inoculated polypropylene；
Further, the nucleator be sodium benzoate, sorbierite, one kind in montmorillonite, preferred sodium benzoate；It is described
Antioxidant is antioxidant 1010, irgasfos 168, one kind in antioxidant 624, preferably antioxidant 1010；The lubricant is hard
One kind in resin acid calcium, silicone, ethylene bis stearamide, Tissuemat E, preferably Tissuemat E；
Further, the preparation method of the outer plate material of the overall plastic tail-gate of a kind of automobile, it is characterised in that：Including following step
Suddenly：
(1) by 50-70 parts of polypropylene, 10-40 parts of reinforcement, 3-15 parts of toughener, 0.2-1 parts of bridging agent, compatilizer 3-
10 parts, 0.2-0.5 parts of nucleator, 0.3-1 parts of antioxidant, 0.3-1 parts of lubricant is added in batch mixer according to parts by weight, in advance
Mixed 3-6min, obtains mixture.
(2) mixture that above step (1) obtains is added in double screw extruder by hopper, chopped organic fiber leads to
Weightless title precise is crossed, is introduced into according to constant weight number by side feeding machine in extruder, through engagement plasticizing, mixing, is squeezed
Go out, tie rod, air-dry, be granulated, obtain the PP composite material with low coefficient of linear thermal expansion feature；
(3) obtained mixture in step (2) is carried out injection molding, obtains the overall plastic tail-gate of automobile by injection molding machine
Parts.
Beneficial effect
Compared with prior art, the present invention has following remarkable advantage：
The present invention is prepared for having high intensity, the modified polypropylene material of low coefficient of linear thermal expansion characteristic, meets vapour
While car overall plastic tail-gate material requirements, automotive light weight technology is realized.
1st, the present invention is using low-gravity, high intensity organic fiber, and especially ultrashort organic fiber of cutting is as polypropylene material
Reinforcement, effectively limits polypropylene molecule chain movement, it is suppressed that polypropylene material thermal expansion；Further, using bridging agent, have
Effect reduces flow direction and perpendicular to flow direction material thermal expansion coefficient gap, both direction linear expansion coefficient as low as 30
×10-6Within mm/mm ﹒ K so that material obtains more high-dimensional stability, realizes and overall plastic tail-gate framework material roving glass fiber
The installation matching of the PP (LGF+PP) or SMC of enhancing, meet automobile main frame maker to product size stability and matching requirements, such as
Zero clearance product design etc..
2nd, the present invention cuts organic fiber using ultrashort, overcomes superfine powder hardly possible in conventional tail-gate material preparation process and adds
The features such as material, continuous or long fibre difficulty scattering problem, have easily charging, easily metering, good scattered, and production efficiency is high；Further,
Solve easily floating fine, the difficult Welding Problems of tail-gate finished product, main engine plants can be met to the high apparent mass of overall plastic tail-gate tail-gate, good spraying
The requirement of the characteristics such as property, mould intrinsic color, while improve finished product rate.
3rd, the present invention has the characteristics such as high flowing, low warpage, high-fire resistance, shortens tail-gate injection molding cycle, reduces
Parts assembling manufacturing costs, meanwhile, material high intensity, high flow behavior, which also help tail-gate product and carry out thin-walled property, to be set
Meter, further mitigates product weight, meets main engine plants to component lightweight loss of weight requirement；Also there is the spies such as low smell, low VOC
Point, can be effectively improved vehicle air quality.
4th, material preparation method technological operation of the present invention is easy, production efficiency is high, is easily industrialized.
Embodiment
With reference to embodiment, the present invention is described in further detail.
According to following table specific formula according to above-mentioned preparation method, obtain comparative example 1, embodiment 1, embodiment 2, embodiment 3,
Embodiment 4, specific formula is as shown in the table
Polypropylene melt index is 50g/10min wherein in embodiment 1, and polypropylene melting means is 20g/ in embodiment 2
10min, polypropylene melt index is 80g/10min in embodiment 3, and polypropylene melting means is 100g/10min in embodiment 4.
Preparation method comprises the following steps in embodiment 1, embodiment 2, embodiment 3, embodiment 4：
(1) by polypropylene, reinforcement, toughener, bridging agent, compatilizer, nucleator, antioxidant, lubricant are according to weight
Number is added in batch mixer, is premixed 3-6min, is obtained mixture.
(2) mixture that above step (1) obtains is added in double screw extruder by hopper, chopped organic fiber leads to
Weightless title precise is crossed, is introduced into according to constant weight number by side feeding machine in extruder, through engagement plasticizing, mixing, is squeezed
Go out, tie rod, air-dry, be granulated, obtain the PP composite material with low coefficient of linear thermal expansion feature；
(3) obtained mixture in step (2) is carried out injection molding, obtains the overall plastic tail-gate of automobile by injection molding machine
Parts.
Product comparative example of the present invention and embodiment performance table
Pass through above table, it can be seen that compared with comparative example, product density of the present invention is considerably lower, intensity higher, tool
There is obvious lightweight characteristic.The present invention, as polypropylene material reinforcement, effectively limits poly- third using ultrashort organic fiber of cutting
Alkene molecular chain movement, it is suppressed that polypropylene material thermal expansion, further, using bridging agent, effectively reduces flow direction and hang down
Directly in flow direction material thermal expansion coefficient gap so that flow direction and the polypropylene in the both direction of flow direction
Within the wire material coefficient of expansion as low as 30 × 10-6mm/mm ﹒ K, it can realize grown with plate material in overall plastic tail-gate skeleton completely
The installation matching of the PP (LGF+PP) or SMC of fiberglass reinforced, meet the overall plastic tail-gate material requirements of automobile.It is in addition, of the invention
Also there is high intensity, high flow feature, this is conducive to tail-gate product structure and optimization is further thinned, and further mitigates product weight
Amount.
The foregoing is merely the embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those skilled in the art's equivalent change or modification that Spirit Essence is made according to the present invention, should all cover the present invention's
Within protection domain.
Claims (10)
1. the outer plate material of a kind of overall plastic tail-gate of automobile, it is characterised in that include the component of following parts by weight：
50-70 parts of polypropylene
10-40 parts of reinforcement
3-15 parts of toughener
0.2-1 parts of bridging agent
3-10 parts of compatilizer
0.2-0.5 parts of nucleator
0.3-1 parts of antioxidant
0.3-1 parts of lubricant.
A kind of 2. outer plate material of the overall plastic tail-gate of automobile according to claim 1, it is characterised in that：Described, the described polypropylene
For ethylene-propylene copolymer, the ethylene-propylene copolymer melt index is 20-100g/10min.
A kind of 3. outer plate material of the overall plastic tail-gate of automobile according to claim 2, it is characterised in that：The ethylene-propylene is total to
Its melt index of polymers is 50-80g/10min.
A kind of 4. outer plate material of the overall plastic tail-gate of automobile according to claim 1, it is characterised in that：The reinforcement is organic fibre
Dimension, the organic fiber is polyester fiber, Fypro, polyacrylonitrile fibre or aramid fiber；The organic fiber is length
The chopped organic fiber of degree≤3mm.
A kind of 5. outer plate material of the overall plastic tail-gate of automobile according to claim 4, it is characterised in that：The organic fiber is length
The ultrashort of degree≤1mm cuts organic fiber.
A kind of 6. outer plate material of the overall plastic tail-gate of automobile according to claim 1, it is characterised in that：The bridging agent is peroxidating
One kind in diisopropylbenzene (DIPB), di-t-butyl peroxide, dibenzoyl peroxide, dual-tert-butyl dicumyl peroxide.
A kind of 7. outer plate material of the overall plastic tail-gate of automobile according to claim 6, it is characterised in that：The bridging agent is peroxide
Change diisopropylbenzene (DIPB).
A kind of 8. outer plate material of the overall plastic tail-gate of automobile according to claim 1, it is characterised in that：The toughener for ethene-
Octene copolymer, EPR ternary rubber, linear low density polyethylene, styrene-butadiene-styrene, hydrogenation of benzene second
One kind in alkene-butadiene-styrene copolymer；The compatilizer is maleic anhydride inoculated polypropylene, maleic anhydride grafting is poly-
One kind in ethene；The nucleator is one kind in sodium benzoate, sorbierite, montmorillonite；The antioxidant is antioxidant
1010, irgasfos 168, one kind in antioxidant 624；The lubricant is calcium stearate, silicone, ethylene bis stearamide, poly-
One kind in ethylene waxes.
A kind of 9. outer plate material of the overall plastic tail-gate of automobile according to claim 8, it is characterised in that：The toughener ethene-
Octene copolymer；The compatilizer maleic anhydride inoculated polypropylene；The nucleator sodium benzoate, the antioxidant are anti-
Oxygen agent 1010, the lubricant polyethylene wax.
A kind of 10. overall plastic tail-gate outside plate material preparation method of automobile according to claim 1, it is characterised in that：Including following
Step：
By 50-70 parts of polypropylene, 10-40 parts of reinforcement, 3-15 parts of toughener, 0.2-1 parts of bridging agent, 3-10 parts of compatilizer, into
0.2-0.5 parts of core agent, 0.3-1 parts of antioxidant, 0.3-1 parts of lubricant are added in batch mixer according to parts by weight, premix 3-
6min, obtains mixture；
By above step（1）Obtained mixture is added in double screw extruder by hopper, and chopped organic fiber passes through weightlessness
Claim precise, be introduced into according to constant weight number by side feeding machine in extruder, be plasticized, mix, extrude, draw through engagement
Bar, air-dry, be granulated, and obtains the PP composite material with low coefficient of linear thermal expansion feature；
By step（2）In obtained mixture pass through injection molding machine, carry out injection molding, obtain the overall plastic tail-gate parts of automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102949.2A CN107903509A (en) | 2017-11-09 | 2017-11-09 | Outer plate material of a kind of overall plastic tail-gate of automobile and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102949.2A CN107903509A (en) | 2017-11-09 | 2017-11-09 | Outer plate material of a kind of overall plastic tail-gate of automobile and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107903509A true CN107903509A (en) | 2018-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711102949.2A Pending CN107903509A (en) | 2017-11-09 | 2017-11-09 | Outer plate material of a kind of overall plastic tail-gate of automobile and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727698A (en) * | 2018-06-11 | 2018-11-02 | 苏州润佳工程塑料股份有限公司 | A kind of preparation method and products thereof of fiber reinforced polypropylene composite material |
| CN108820051A (en) * | 2018-05-07 | 2018-11-16 | 北京长城华冠汽车科技股份有限公司 | Tail-gate and vehicle |
| CN115960414A (en) * | 2022-12-30 | 2023-04-14 | 金发科技股份有限公司 | Polypropylene composite material and preparation method and application thereof |
-
2017
- 2017-11-09 CN CN201711102949.2A patent/CN107903509A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108820051A (en) * | 2018-05-07 | 2018-11-16 | 北京长城华冠汽车科技股份有限公司 | Tail-gate and vehicle |
| WO2019214192A1 (en) * | 2018-05-07 | 2019-11-14 | 北京长城华冠汽车科技股份有限公司 | Tailgate and vehicle |
| CN108727698A (en) * | 2018-06-11 | 2018-11-02 | 苏州润佳工程塑料股份有限公司 | A kind of preparation method and products thereof of fiber reinforced polypropylene composite material |
| CN115960414A (en) * | 2022-12-30 | 2023-04-14 | 金发科技股份有限公司 | Polypropylene composite material and preparation method and application thereof |
| CN115960414B (en) * | 2022-12-30 | 2023-11-14 | 金发科技股份有限公司 | Polypropylene composite material and preparation method and application thereof |
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Application publication date: 20180413 |
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