CN104829949B - Automobile bumper bar - Google Patents
Automobile bumper bar Download PDFInfo
- Publication number
- CN104829949B CN104829949B CN201510288306.6A CN201510288306A CN104829949B CN 104829949 B CN104829949 B CN 104829949B CN 201510288306 A CN201510288306 A CN 201510288306A CN 104829949 B CN104829949 B CN 104829949B
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- CN
- China
- Prior art keywords
- parts
- bumper
- bumper bar
- cavity
- bumper body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/12—Shape memory
-
- 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 invention discloses an automobile bumper bar which comprises a bumper bar body. A plurality of cavities are arranged in the bumper bar body, only one passage in each cavity is communicated with the outside, and the bumper bar body is composed of, by mass, 20-25 parts of ethylene-alpha-octene copolymer, 25-40 parts of polypropylene, 10-20 parts of artificial rubber, 5-10 parts of latex, 4-8 parts of aluminum alloy, 15-25 parts of carbon fiber, 0.5-1 part of zinc stearate, 14-20 parts of talcum powder, 0.3-1.5 parts of coupling agent, 0.1-0.5 part of antioxidant and 5-10 parts of plasticizer. When the bumper bar body concaves and cannot automatically spring back, high-pressure gas can be injected into the cavities, and the bumper bar body is high in tenacity and elasticity, thereby being forced to restore to an original state within a short time; standardized operation can be adopted for repairing a concave position, and overlarge difference in repairing effect of the bumper bar due to own level of repairmen is avoided, and repairing quality of the bumper bar is guaranteed.
Description
Technical field
The invention belongs to the technical field of plastic processing, more particularly, to plastic bumper.
Background technology
Automobile front and back end equipped with bumper (bumper), not only decoration functions, more importantly absorb and relax extraneous punching
Hit the safety device of power, protection vehicle body and occupant safety function.Permitted many years ago, car front/rear collision bumper is based on metal material
, gradually substituted with plastic bumper now.Trace it to its cause, be because that plastic bumper is softer compared with metal bumper, more
Gently, corrosion resistance is more preferable.Plastic bumper also has certain elasticity, when slight collision occurring or scratches, moulds
Material bumper can automatic rebounding.
But, when the dynamics of collision or scratch is larger, plastic bumper is easy for occurring indent, present for indent
Using restorative procedure be to blow plastic bumper with hot blast, after plastic bumper blow soft after, little by little levelling with handss, make to mould
Material bumper recovers original appearance as far as possible.Plastic bumper is mostly curved surface, and repair process is very time-consuming, and the effect repaired is very big
The level of mechanic is depended on degree.The indent reparation leading to plastic bumper can only be manual operations, waste time and energy.
Content of the invention
The present invention provides a kind of bumper, can only pass through hot blast and craft with the indent reparation solving plastic bumper
In conjunction with the problem that wastes time and energy of mode.
In order to solve above-mentioned technical problem, the present invention provides a kind of following technical scheme: bumper, including bumper
Body, is provided with several cavitys in described bumper body, and in each cavity, an only passage is in communication with the outside, bumper body
Become to be grouped into by following mass fraction: ethylene-alpha-octylene copolymers 20-25 part, -40 parts of polipropene 25, lactoprene 10-20
Part, latex 5-10 part, aluminium alloy 4-8 part, carbon fiber 15-25 part, zinc stearate 0.5-1 part, Pulvis Talci 14-20 part, coupling agent
0.3-1.5 part, antioxidant 0.1-0.5 part, plasticizer 5-10 part.
The principle of the present invention is: bumper body has preferable toughness, when bumper body issues in mechanical shock
During raw indent, gases at high pressure are injected in the cavity of bumper body by available high-pressure pump by passage, enable bumper body
Rapidly it is returned to original state.Contain unsaturated double-bond, good weatherability in the molecular link of ethylene-alpha-octylene copolymers, also have
Have the advantages that good dispersion, autohension and mutual viscosity are good, equivalent interpolation impact strength is high, forming ability is excellent.Polypropylene has
Low rigidity, but there is stronger impact strength, and polyacrylic vicat softening temperature is 150 DEG C, because degree of crystallinity is higher, this
The surface rigidity of material and anti-scratch characteristic are fine.Lactoprene possesses preferable elasticity.Latex has good filming performance,
Wet gel strength is high, good mechanical properties, and resilience is preferable.Aluminium alloy has the characteristics that light weight, hardness are big.Carbon fiber is used for
Form the skeleton of bumper, be easy to other compositions attached to it.Zinc stearate has vulcanizing activator in rubber, softening agent
Function.Appropriate Pulvis Talci can improve material impact intensity and toughness.Coupling agent can improve wearability and the resistance to ag(e)ing of material
Energy.Antioxidant can delay or suppress the carrying out of polymer oxidizing process.Between plasticizer insertion polymerization thing molecule, weaken big point
Active force between son, makes the activeness of polymer molecule increase, thus improving Polymer Processing and the suppleness of product.
Compared with prior art, it is an advantage of the current invention that: 1, because of the proportioning of its component, it possesses necessarily bumper body
Rigidity, impact strength, preferably elasticity, toughness, forming ability, be provided simultaneously with the feature of lightweight.2nd, in bumper body
It is provided with the cavity being in communication with the outside, when the indent being unable to automatic rebounding in bumper body, high pressure can be injected into cavity
Gas, because bumper body possesses good toughness and elasticity, forces insurance bar body to be returned to original appearance at short notice.This
Bright do not need manual operations it is only necessary to be provided that the equipment of gases at high pressure, not only time saving and energy saving, and the reparation of internal recess
Standardized operation can be adopted, the repairing effect of bumper will not have big difference it is ensured that protecting because of the level of mechanic itself
The quality that dangerous thick stick is repaired.
Further, the volume of described cavity is 0.5-0.7 cubic centimetre, will not to bumper originally using above-mentioned cavity volume
The overall intensity of body has too much influence, and will not lead to low in reparation timeliness rate because of small volume.
Further, the described access portal connecting with cavity down and inwardly it is ensured that bumper body attractive in appearance.At this
Wen Zhong, down, be relative to automobile inwardly for, refer to the direction near ground down, refer to inwardly near automobile
Direction.
Further, described bumper body is become to be grouped into by following mass fraction: 20 parts of ethylene-alpha-octylene copolymers part,
Polipropene 25 part, 10 parts of lactoprene, 5 parts of latex, 4 parts of aluminium alloy, 15 parts of carbon fiber, 0.5 part of zinc stearate, Pulvis Talci 14
Part, 0.3 part of coupling agent, 0.1 part of antioxidant, 5 parts of plasticizer.This proportioning is the lower limit of ratio range.
Further, described bumper body is become to be grouped into by following mass fraction: 25 parts of ethylene-alpha-octylene copolymers part,
40 parts of polypropylene, 20 parts of lactoprene, 10 parts of latex, 8 parts of aluminium alloy, 25 parts of carbon fiber, 1 part of zinc stearate, 20 parts of Pulvis Talci,
1.5 parts of coupling agent, 0.5 part of antioxidant, 10 parts of plasticizer.This proportioning is the upper limit of ratio range.
Further, described bumper body is become to be grouped into by following mass fraction: 22 parts of ethylene-alpha-octylene copolymers part,
35 parts of polypropylene, 15 parts of lactoprene, 8 parts of latex, 6 parts of aluminium alloy, 20 parts of carbon fiber, 0.8 part of zinc stearate, Pulvis Talci 17
Part, 0.9 part of coupling agent, 0.3 part of antioxidant, 8 parts of plasticizer.This proportioning is the intermediate value of ratio range.
Brief description
With reference to the accompanying drawings and examples technical solution of the present invention is further illustrated:
Fig. 1 is the structural representation of bumper embodiment 1 of the present invention.
Specific embodiment
Reference in Figure of description includes: bumper body 1, cavity 2, opening 3.
Embodiment 1
As shown in figure 1, one of the present embodiment bumper, including bumper body 1, described bumper body 1
Inside it is provided with several cavitys 2, the volume of cavity 2 is 0.6 cubic centimetre about, only have a passage in each cavity 2 with the external world even
Logical, the opening 3 of passage is down and inwardly.Bumper body 1 is become to be grouped into by following mass fraction: ethylene-alpha-octylene copolymerization
20 parts of thing part, polipropene 25 part, 10 parts of lactoprene, 5 parts of latex, 4 parts of aluminium alloy, 15 parts of carbon fiber, 0.5 part of zinc stearate,
14 parts of Pulvis Talci, 0.3 part of coupling agent, 0.1 part of antioxidant, 5 parts of plasticizer.
The indent that can not voluntarily reply because of collision generation as the bumper body 1 in the present embodiment, the operation that it is repaired is such as
Under:
1st, prepare high-pressure pump, the nozzle of high-pressure pump mates with access portal 3, prevent gases at high pressure from from nozzle and leading to
The gap effusion of road opening 3.
2nd, find the cavity 2 being associated with interior recess, i.e. recessed area and its neighbouring cavity 2.
3rd, the degree according to automobile indent and position, decides whether to unload bumper body 1 from automobile body.
4th, a cavity 2 being associated the nozzle alignment of high-pressure pump with interior recess, opens high-pressure pump, gases at high pressure
Can be injected in the cavity 2 that interior recess is associated, force cavity 2 to be in the volume of maximum, will material near this cavity 2 extensive
Again to former state.
5th, after the material near this cavity 2 recovers to former state, stop jet, by the nozzle alignment of high-pressure pump and indent
The associated next cavity 2 in place, the operation of repeat step 4, until all of associated cavities 2 are injected gases at high pressure, protect
Dangerous thick stick body 1 replys original appearance.
In the present embodiment, the material of bumper body 1 possesses good toughness and elasticity, and general collision or scratch are all
Can automatically reply；When running into larger collision, can be replied quickly by injecting gases at high pressure.The volume of cavity 2 is 0.6
About cubic centimetre, volume adequacy, both will not there is too much influence to the intensity of bumper body 1 entirety, again will not be because of volume
Less and lead to repair injection gas when inefficiency.The access portal 3 connecting with cavity 2 is down with inwardly it is ensured that protect
Dangerous thick stick body 1 attractive in appearance.
Embodiment 2
The present embodiment is with the difference of embodiment 1: bumper body 1 is become to be grouped into by following mass fraction: second
Alkene-α -25 parts of octene copolymer part, 40 parts of polypropylene, 20 parts of lactoprene, 10 parts of latex, 8 parts of aluminium alloy, 25 parts of carbon fiber,
1 part of zinc stearate, 20 parts of Pulvis Talci, 1.5 parts of coupling agent, 0.5 part of antioxidant, 10 parts of plasticizer.
Embodiment 3
Bumper body 1 by following mass fraction become be grouped into: 22 parts of ethylene-alpha-octylene copolymers part, 35 parts of polypropylene,
15 parts of lactoprene, 8 parts of latex, 6 parts of aluminium alloy, 20 parts of carbon fiber, 0.8 part of zinc stearate, 17 parts of Pulvis Talci, coupling agent 0.9
Part, 0.3 part of antioxidant, 8 parts of plasticizer.
The detection data of above-described embodiment is as shown in the table:
| Impact strength (j/m) | The modulus of elasticity in static bending (mpa) | |
| Embodiment 1 | 580 | 1100 |
| Embodiment 2 | 610 | 1250 |
| Embodiment 3 | 590 | 1190 |
Table 1
Can be as can be seen that the bumper body 1 in 3 embodiments be respectively provided with preferable impact strength and bending in upper table
Elastic modelling quantity.
Above-described embodiment using injection gases at high pressure reparation and repaired by hand be compared as follows (gases at high pressure reparation shown in table
Quite, repaired by hand uses three different mechanics to the sinking degree targeted with repaired by hand):
Table 2
No matter can be seen that from repair time or for repairing effect in upper table, gases at high pressure are repaired all far excellent
In repaired by hand, therefore this structure and formula are convenient for promoting on a large scale, can provide facility for the maintenance of bumper.
For a person skilled in the art, on the premise of without departing from present configuration, some changes can also be made
Shape and improvement, these also should be considered as protection scope of the present invention, and these are all without the effect affecting present invention enforcement and patent
Practicality.
Claims (5)
1. a kind of bumper, including bumper body it is characterised in that: be provided with several cavitys in described bumper body,
The volume of described cavity is 0.5-0.7 cubic centimetre, and an only passage is in communication with the outside in each cavity, bumper body by
Following mass fraction becomes to be grouped into: ethylene-alpha-octylene copolymers 20-25 part, -40 parts of polipropene 25, lactoprene 10-20 part,
Latex 5-10 part, aluminium alloy 4-8 part, carbon fiber 15-25 part, zinc stearate 0.5-1 part, Pulvis Talci 14-20 part, coupling agent 0.3-
1.5 parts, antioxidant 0.1-0.5 part, plasticizer 5-10 part.
2. bumper as claimed in claim 1 it is characterised in that: the described access portal connecting with cavity is down and court
Interior, down, be relative to automobile inwardly for, refer to the direction near ground down, refer to the side near automobile inwardly
To.
3. bumper as claimed in claim 2 it is characterised in that: described bumper body is by following mass fraction composition
Composition: 20 parts of ethylene-alpha-octylene copolymers, polipropene 25 part, 10 parts of lactoprene, 5 parts of latex, 4 parts of aluminium alloy, carbon fiber 15
Part, 0.5 part of zinc stearate, 14 parts of Pulvis Talci, 0.3 part of coupling agent, 0.1 part of antioxidant, 5 parts of plasticizer.
4. bumper as claimed in claim 2 it is characterised in that: described bumper body is by following mass fraction composition
Composition: 25 parts of ethylene-alpha-octylene copolymers, 40 parts of polypropylene, 20 parts of lactoprene, 10 parts of latex, 8 parts of aluminium alloy, carbon fiber
25 parts, 1 part of zinc stearate, 20 parts of Pulvis Talci, 1.5 parts of coupling agent, 0.5 part of antioxidant, 10 parts of plasticizer.
5. bumper as claimed in claim 2 it is characterised in that: described bumper body is by following mass fraction composition
Composition: 22 parts of ethylene-alpha-octylene copolymers, 35 parts of polypropylene, 15 parts of lactoprene, 8 parts of latex, 6 parts of aluminium alloy, carbon fiber 20
Part, 0.8 part of zinc stearate, 17 parts of Pulvis Talci, 0.9 part of coupling agent, 0.3 part of antioxidant, 8 parts of plasticizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288306.6A CN104829949B (en) | 2015-05-29 | 2015-05-29 | Automobile bumper bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288306.6A CN104829949B (en) | 2015-05-29 | 2015-05-29 | Automobile bumper bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104829949A CN104829949A (en) | 2015-08-12 |
| CN104829949B true CN104829949B (en) | 2017-01-25 |
Family
ID=53808168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510288306.6A Expired - Fee Related CN104829949B (en) | 2015-05-29 | 2015-05-29 | Automobile bumper bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN104829949B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109796A (en) * | 2018-08-29 | 2019-01-01 | 昆山益准汽车零部件有限公司 | A kind of bumper |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10043810A1 (en) * | 2000-09-06 | 2002-04-04 | Basf Coatings Ag | Binder solution for use as spot blender for small automotive repairs contains (meth)acrylate copolymer in a solvent mixture containing, preferably, butyl acetate, 2-methoxypropyl acetate, xylene and ethanol |
| US7575081B2 (en) * | 2004-03-29 | 2009-08-18 | Kubota Corporation | Work vehicle |
| KR20100055224A (en) * | 2008-11-17 | 2010-05-26 | 현대모비스 주식회사 | Bumper of car |
| CN201670187U (en) * | 2010-05-18 | 2010-12-15 | 肖书刚 | Automobile rubber bumper |
| CN101885875A (en) * | 2010-08-06 | 2010-11-17 | 常州市曙光车业有限公司 | Formula of raw materials used for manufacturing automotive plastic parts |
| CN102924806A (en) * | 2012-08-23 | 2013-02-13 | 上海金发科技发展有限公司 | Polypropylene composite with low linear expansion coefficient and preparation method thereof |
| CN104417470A (en) * | 2013-09-04 | 2015-03-18 | 江苏海德莱特汽车部件有限公司 | Vehicle bumper |
| CN104194154A (en) * | 2014-08-27 | 2014-12-10 | 佛山市顺德区南凯新材料实业有限公司 | Composite polypropylene automobile material with high fluidity and low shrinking percentage and preparation method thereof |
| CN104592738A (en) * | 2015-01-20 | 2015-05-06 | 天津海化汽车塑料制品有限公司 | Special material for automobile bumper and manufacturing method of automobile bumper |
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2015
- 2015-05-29 CN CN201510288306.6A patent/CN104829949B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104829949A (en) | 2015-08-12 |
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Granted publication date: 20170125 Termination date: 20200529 |