CN103661183A - Hybrid composite energy absorbing part for automobile and manufacturing method thereof - Google Patents
Hybrid composite energy absorbing part for automobile and manufacturing method thereof Download PDFInfo
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- CN103661183A CN103661183A CN201310680430.8A CN201310680430A CN103661183A CN 103661183 A CN103661183 A CN 103661183A CN 201310680430 A CN201310680430 A CN 201310680430A CN 103661183 A CN103661183 A CN 103661183A
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- fiber layer
- aramid fiber
- energy absorbing
- carbon fiber
- aramid
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- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 66
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 44
- 239000004917 carbon fiber Substances 0.000 claims abstract description 42
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000004804 winding Methods 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 5
- 229920002748 Basalt fiber Polymers 0.000 claims description 4
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims 2
- 239000005007 epoxy-phenolic resin Substances 0.000 claims 2
- 239000003365 glass fiber Substances 0.000 claims 2
- 229920001568 phenolic resin Polymers 0.000 claims 2
- 238000002791 soaking Methods 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 36
- 238000010521 absorption reaction Methods 0.000 description 12
- 230000006378 damage Effects 0.000 description 8
- 239000007769 metal material Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 208000027418 Wounds and injury Diseases 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Vibration Dampers (AREA)
Abstract
本发明公开了一种车用混杂型复合材料能量吸收部件及其生产方法。所述能量吸收部件为圆形管状部件，包括从内至外的第一芳纶纤维层、碳纤维层、第二芳纶纤维层。生产方法为：依次在芯模上缠绕已浸润基质的芳纶纤维、碳纤维、芳纶纤维，分别形成第一芳纶纤维层、碳纤维层、第二芳纶纤维层；将缠好的能量吸收部件固化后脱去芯模即可。本发明满足汽车轻量和安全的发展要求，且工艺路线合理，处理技术和方法成本低廉、性价比高、安全性能好，符合汽车低能耗、低污染的发展方向，顺应了节能减排、绿色环保的发展趋势。
The invention discloses a vehicle-used hybrid energy absorbing component of composite material and a production method thereof. The energy absorbing component is a circular tubular component, including a first aramid fiber layer, a carbon fiber layer, and a second aramid fiber layer from inside to outside. The production method is as follows: winding aramid fiber, carbon fiber, and aramid fiber that have soaked the matrix on the mandrel in sequence to form the first aramid fiber layer, carbon fiber layer, and second aramid fiber layer; After curing, take off the mandrel. The invention meets the development requirements of light weight and safety of automobiles, and has reasonable process route, low cost of treatment technology and method, high cost performance and good safety performance, conforms to the development direction of low energy consumption and low pollution of automobiles, and conforms to energy saving, emission reduction, green environmental protection development trend.
Description
Technical field
The present invention relates to a kind of automobile energy absorbing member, especially relate to a kind of carbon fiber, aramid fiber and mix type and strengthen three-dimensional structure energy absorbing member.
Background technology
According to official statistics, since the later stage eighties 20th century, Road Traffic Accidents in China quantity, death toll, ten thousand car death rate of accident etc. are all in world's umber one.Within 2009, Chinese automobile recoverable amount accounts for 3% of the world, and the death toll of traffic accident accounts for 16%, and the safety that improves the vehicle is extremely urgent.
At present in vehicle, protect occupant's parts to have two types during for collision: the gentle energy absorbing member of leaping high of high rigid frame.High rigid material, as safety lever and body shell, main when collision happens for occupant provides enough physical security spaces, thereby require rigidity strong, be out of shape littlely, but impact energy absorb ability is to external world low, can not reduce the injury of external impact force to occupant; On the other hand, for the high-energy absorption material cushioning, for example between the safety lever of vehicle and front side member, place one group of cast energy-absorbing element, the energy that can effectively absorb shock by deformation and the destruction of self of parts, not only reduce the impact to high rigidity car body, and slow down the too fast increase of deceleration/decel, reduce the physiology injury of collision to occupant.
As shown in Figure 1-2; conventionally the energy-absorption box 2 of at the rear side of vehicle front bumper 1, one group of metal material being installed is as energy absorbing member; energy-absorption box 2 is fixed on front side member by rivet, makes vehicle actv. in collision process absorb the energy clashing into, the passenger's that adequately protects life safety.But conventionally self is heavier for ordinary metallic material, the main plastic deformation by metallic material is carried out energy-absorbing, for example now use metallic material of aluminum, its specific energy absorption value (energy value that unit mass absorbs) is only 44.6kJ/kg, energy absorbing is on the low side, can not meet the development tendency of automotive light weight technology, low energy consumption and high security.
Carbon fiber has high-modulus, high-intensity characteristic, aramid fiber breaking extension is up to 2.5-3% simultaneously, by the structure of appropriate design composite material, reduce the stretching, extension of central crackle, can reach the object of high bending, multi-fiber fracture destruction, absorb to greatest extent failure energy, delay velocity of impact, reduce the harm to vehicle-mounted passenger.
Composite material refers to by two kinds or the two or more material with different physics, chemical nature, with microcosmic, the different layer of structure such as sight or macroscopic view that are situated between, the material system forming through complicated Spatial Coupling.By structure design in different size, different levels, optimize and can obtain in performance and function considerably beyond the new material of its simple substance component property and function, current composite material is all widely used in fields such as Aeronautics and Astronautics, weapons, naval vessels.But the application as energy absorbing parts of automobiles has no Patents or report.
Summary of the invention
The problems such as requirement that be to be solved by this inventionly that existing Vehicular metal energy-absorbing element energy absorption is undesirable, quality is heavy, do not meet safety, light weight, energy-conserving and environment-protective.
In order to solve the problems of the technologies described above, the invention provides a kind of automobile-used type composite material energy absorbing member that mixes, it is characterized in that, described energy absorbing member is round tubular parts, comprises the first aramid fiber layer, carbon fiber layer, the second aramid fiber layer from the inside to the outside.
Preferably, described the first aramid fiber layer, the second aramid fiber layer are to take aramid fiber as reinforcement, and epoxy resin, phenol resin or unsaturated polyester resin are matrix; Described carbon fiber layer is to take carbon fiber as reinforcement, and epoxy resin, phenol resin or unsaturated polyester resin are matrix, and the matrix that the first aramid fiber layer, carbon fiber layer, the second aramid fiber layer adopt is identical.
Preferably, the Thickness Ratio of described the first aramid fiber layer, carbon fiber layer, the second aramid fiber layer is 1:10:2.5; The thickness of pipe of described energy absorbing member is 1:22 with diameter of inner pipe ratio.
Provided by the invention automobile-used mix type composite material energy absorbing member also available basalt fibre layer, carbon fiber layer, glass layer substitute described the first aramid fiber layer, the second aramid fiber layer, or/and with basalt fibre layer, the alternative carbon fiber layer of glass layer; The material that substitutes the first aramid fiber layer, the second aramid fiber layer is identical, and different from the material of alternative carbon fiber layer.
The present invention also provides the above-mentioned automobile-used production method that mixes type composite material energy absorbing member, it is characterized in that, comprises the following steps:
Step 1): aramid fiber, carbon fiber are infiltrated to matrix standby;
Step 2): winding step 1 on core successively aramid fiber, carbon fiber, the aramid fiber) prepared, form respectively the first aramid fiber layer, carbon fiber layer, the second aramid fiber layer, makes and mix type composite material energy absorbing member;
Step 3): by step 2 core is sloughed in mixing after type composite material energy absorbing member solidifies of) making.
Preferably, described step 1) method being wound around is: the tubular axis of mandrel of take is axially 0 °, and the winding angle of aramid fiber is 75 °～90 °, and the winding angle of carbon fiber is 5 °～20 °.
Further, described step 1) method being wound around is: the tubular axis of mandrel of take is axially 0 °, and the winding angle of aramid fiber is 88 °, and the winding angle of carbon fiber is 17.6 °.
The Thickness Ratio of the first aramid fiber layer preferably, described step 1), carbon fiber layer, the second aramid fiber layer is 1:10:2.5; The thickness of pipe of described energy absorbing member is 1:22 with diameter of inner pipe ratio.
Preferably, concrete grammar curing described step 3) is: in temperature, be to solidify 24 hours under 20 ± 2 ℃, the relative humidity condition that is 65 ± 5%.
It is reinforcement that the present invention adopts complementary fortifying fibre, carbon fiber has high strength, the characteristic of high-modulus, when fracture occurs carbon fiber, can realize high energy-absorbing, although aramid fiber compression performance is obviously worse than tensile property, but breaking extension is up to 2.5-3%, utilize three interlayers every complementary winding structure, aramid fiber in compression process is compressed in 0 ° of direction, when being converted into stretching in 90 ° of directions, the expansion of the distortion of restriction carbon fiber and composite inner central authorities crackle, largely improve the quantity of fibre breakage, thereby absorb more substantial energy.Winding shaping process, directly Wrapping formed by fiber, needn't be through interweaving such as longitude and latitude, the operation such as braiding, reduce largely the damage of manufacturing process to fiber, improve the in-use performance of fiber.
Composite material energy absorbing mechanism provided by the invention is different from the absorption mechanism of traditional metal energy absorbing member processed, traditional metallic material mainly carrys out energy-absorbing by its plastic deformation, its load significantly declines very soon after reaching maxim, and its amount of energy is on the low side; The present invention is tubular composite material, and it mainly carrys out energy-absorbing by modes such as fibre breakage, bending, distortion, layerings, and its load declines very by a small margin and keeps stable load after reaching maxim.This specific character can further reduce the injury of foreign impacts to occupant in car body after energy absorbing component and car body, and the high frequency repeated stock with certain amplitude reduces the injury to occupant.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of front bumper on automobile;
Fig. 2 is the schematic diagram of the energy-absorption box of existing metal material while using;
Fig. 3 is automobile-used schematic diagram when mixing type composite material energy absorbing member and using provided by the invention;
Fig. 4 is the automobile-used partial enlarged drawing that mixes type composite material energy absorbing member provided by the invention.
The specific embodiment
For the present invention is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Embodiment
1. raw material
Epoxy resin (Mitsubishi chemical Co., Ltd, 308A3801); Aramid fiber; Carbon fiber.
2. production method
2.1 that aramid fiber, carbon fiber are infiltrated to epoxy matrix material is standby;
2.2 aramid fiber, carbon fiber, the aramid fibers that on core prepared by winding step 2.1 successively, form respectively the first aramid fiber layer 4, carbon fiber layer 5, the second aramid fiber layer 6, make and mix type composite material energy absorbing member 2 '; The tubular axis of core of take is axially 0 °, and the winding angle of controlling aramid fiber is 88 °, and the winding angle of carbon fiber is 17.6 °; During winding, the Thickness Ratio of the first aramid fiber layer 4, carbon fiber layer 5, the second aramid fiber layer 6 is 1:10:2.5; The thickness of pipe of energy absorbing member 2 ' is 1:22 with diameter of inner pipe ratio.
The 2.3 type composite material energy absorbing members 2 ' that mix that step 2.2 is made are sloughed core after temperature is to solidify 24 hours under 20 ℃, the relative humidity condition that is 65%.
3. performance testing
The energy-absorption box that mixes type composite material energy absorbing member 2 ' and the traditional metal materials aluminium matter 2 quasistatic compression verification contrasts that said method is made, the electronic universal tester that model is WDW3100 is used in test, and compression speed is: 5mm/min.Comparing result is as shown in table 1:
Table 1
As shown in Table 1, embodiment makes mixes type composite material energy absorbing member 2 ' and adopts carbon/aramid fiber to mix type composite material, and its specific energy absorption value is up to 100kJ/kg, is more than the twice of energy absorption of energy-absorption box 2 of existing aluminium matter; Absorbing under the prerequisite of identical energy, the weight that required carbon/aramid fiber mixes type composite material is less than half of required metallic aluminum material.As can be seen here, when the present invention has met the demand for development of automobile light weight and safety, operational path is reasonable, treatment technology and method are with low cost, cost performance is high, safety performance is good, meet automobile low energy consumption, oligosaprobic developing direction, also complied with greatly the development tendency of energy-saving and emission-reduction, environmental protection.
4. use and install
As shown in Figure 3, mix type composite material energy absorbing member 2 ' installation site identical with the position of the energy-absorption box 2 of metal material, be arranged between front bumper 1 and front side member 3, the metal cylinder identical with core shape can be installed on front side member 3, to mix type composite material energy absorbing member 2 ' and be enclosed within on this metal cylinder, or adopt other existing connection modes will mix type composite material energy absorbing member 2 ' to be arranged between front bumper 1 and front side member 3.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310680430.8A CN103661183B (en) | 2013-12-12 | 2013-12-12 | A kind of automobile-used hybrid composite energy absorbing part and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310680430.8A CN103661183B (en) | 2013-12-12 | 2013-12-12 | A kind of automobile-used hybrid composite energy absorbing part and production method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN103661183A true CN103661183A (en) | 2014-03-26 |
| CN103661183B CN103661183B (en) | 2016-10-26 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950418A (en) * | 2014-05-05 | 2014-07-30 | 上海交通大学 | Carbon fiber composite bumper structure for automobile |
| CN104590178A (en) * | 2014-12-24 | 2015-05-06 | 芜湖市汽车产业技术研究院有限公司 | Automobile energy absorption box |
| CN105065393A (en) * | 2015-07-07 | 2015-11-18 | 奇瑞汽车股份有限公司 | Vehicle carbon fiber part assembling composition and mode |
| CN108340937A (en) * | 2018-03-21 | 2018-07-31 | 深圳市乾行达科技有限公司 | Composite material anti-climbing energy-absorbing device |
| CN106240502B (en) * | 2016-08-26 | 2019-03-29 | 东华大学 | A kind of automobile-used energy absorbing member of composite material and its processing method |
| CN110341265A (en) * | 2019-07-10 | 2019-10-18 | 中电建路桥集团有限公司 | A kind of energy-absorbing composite material |
| CN112141036A (en) * | 2019-06-28 | 2020-12-29 | 北京新能源汽车股份有限公司 | Energy absorption box for anti-collision beam and manufacturing method of energy absorption box |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0361343A1 (en) * | 1988-09-29 | 1990-04-04 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Bumpers for motor vehicles, in particular passenger ones |
| US6601886B1 (en) * | 2002-05-31 | 2003-08-05 | Hexcel Corporation | Energy absorbing composite tube |
| CN102563062A (en) * | 2010-10-14 | 2012-07-11 | 韦特柯格雷公司 | Thick walled composite tubular and method of making |
| CN102786776A (en) * | 2012-08-03 | 2012-11-21 | 南通南京大学材料工程技术研究院 | Carbon fiber/aramid fiber reinforced resin base composite material and vehicle front anticollision beam prepared from same |
| CN102785443A (en) * | 2012-07-19 | 2012-11-21 | 马道平 | A layer structure composite material bumper with cushioning laminates and its preparation method |
| WO2013064859A1 (en) * | 2011-10-31 | 2013-05-10 | Industrialesud S.P.A. | Article made of a multilayer composite material and preparation method thereof |
-
2013
- 2013-12-12 CN CN201310680430.8A patent/CN103661183B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0361343A1 (en) * | 1988-09-29 | 1990-04-04 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Bumpers for motor vehicles, in particular passenger ones |
| US6601886B1 (en) * | 2002-05-31 | 2003-08-05 | Hexcel Corporation | Energy absorbing composite tube |
| CN102563062A (en) * | 2010-10-14 | 2012-07-11 | 韦特柯格雷公司 | Thick walled composite tubular and method of making |
| WO2013064859A1 (en) * | 2011-10-31 | 2013-05-10 | Industrialesud S.P.A. | Article made of a multilayer composite material and preparation method thereof |
| CN102785443A (en) * | 2012-07-19 | 2012-11-21 | 马道平 | A layer structure composite material bumper with cushioning laminates and its preparation method |
| CN102786776A (en) * | 2012-08-03 | 2012-11-21 | 南通南京大学材料工程技术研究院 | Carbon fiber/aramid fiber reinforced resin base composite material and vehicle front anticollision beam prepared from same |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950418A (en) * | 2014-05-05 | 2014-07-30 | 上海交通大学 | Carbon fiber composite bumper structure for automobile |
| CN103950418B (en) * | 2014-05-05 | 2015-12-09 | 上海交通大学 | Carbon Fiber Composite Bumper Structures for Automobiles |
| CN104590178A (en) * | 2014-12-24 | 2015-05-06 | 芜湖市汽车产业技术研究院有限公司 | Automobile energy absorption box |
| CN105065393A (en) * | 2015-07-07 | 2015-11-18 | 奇瑞汽车股份有限公司 | Vehicle carbon fiber part assembling composition and mode |
| CN106240502B (en) * | 2016-08-26 | 2019-03-29 | 东华大学 | A kind of automobile-used energy absorbing member of composite material and its processing method |
| CN108340937A (en) * | 2018-03-21 | 2018-07-31 | 深圳市乾行达科技有限公司 | Composite material anti-climbing energy-absorbing device |
| CN108340937B (en) * | 2018-03-21 | 2023-06-09 | 深圳市乾行达科技有限公司 | Composite material anti-creeping energy-absorbing device |
| CN112141036A (en) * | 2019-06-28 | 2020-12-29 | 北京新能源汽车股份有限公司 | Energy absorption box for anti-collision beam and manufacturing method of energy absorption box |
| CN110341265A (en) * | 2019-07-10 | 2019-10-18 | 中电建路桥集团有限公司 | A kind of energy-absorbing composite material |
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| CN103661183B (en) | 2016-10-26 |
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