CN103722977A - Multi-TG (glass transition temperature) carbon fiber wheel rim as well as manufacturing method thereof - Google Patents
Multi-TG (glass transition temperature) carbon fiber wheel rim as well as manufacturing method thereof Download PDFInfo
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- CN103722977A CN103722977A CN201410031202.2A CN201410031202A CN103722977A CN 103722977 A CN103722977 A CN 103722977A CN 201410031202 A CN201410031202 A CN 201410031202A CN 103722977 A CN103722977 A CN 103722977A
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Abstract
The invention discloses a multi-TG (glass transition temperature) carbon fiber wheel rim as well as a manufacturing method thereof. The wheel rim is manufactured from carbon fiber composite materials, and comprises two crossed side walls and a connecting axle; a tire position hole slot for placing an inner tire and a 'V'-shaped inner cavity body are formed in two border areas of the connecting axle in a spacing manner, and the tire position hole slot and the 'V'-shaped inner cavity body are ranked up and down; side walls, corresponding to and close to the tire position hole slot and the connecting axle, are braking sides; the braking sides and the connecting axle combine to form a structure with an 'H'-shaped cross section; two kinds or more than two kinds of epoxy resin carbon fiber materials with different TGs are adopted for the 'H'-shaped structure and the side wall corresponding to the inner cavity body. According to the multi-TG carbon fiber wheel rim disclosed by the invention, epoxy resin carbon fiber materials with high-TG higher than 180 DEG C are adopted for the braking area for bearing tire pressure, and the frame burning hazard of the rim is reduced effectively; not only is the safety of the rim improved, but also the requirements at two aspects of light weight and safety are considered; at the non-braking part, epoxy resin carbon fiber materials with low-TG lower than 180 DEG C are adopted, and thus the rim has favorable rigidity and toughness, and the impact strength of the rim is improved.
Description
Technical field
the present invention relates to bicycle accessories application, especially a kind of many TG carbon fibre rim and preparation method thereof.
Background technology
Cycle racing be one to the person be highly profitable place aerobic outdoor exercises, in developed countries such as America and Europes, carried out widely.According to statistics, in the U.S., one of nearly 1/3 outdoor exercises are cycle racings.The ubiquity that this motion is carried out as can be seen here.Bicycle also from our impression traditional vehicle become body-building apparatus.Each manufacturer makes great efforts to improve product design invariably, and manufacturing process is used better material, in the hope of better bicycle.
The material of manufacturing bicycle, from steel, progressively becomes aluminum alloy, to pursue lightweight.In recent years, with expensive carbon fibre material, make frame on a large scale especially.
With respect to vehicle body, the wheel rim of bicycle heart especially.Its effect, is just equivalent to the driving engine of automobile.Its importance as can be seen here.Each producer invariably makes great efforts and develops better bicycle rim, adopts one after another new material new process, to develop gentlier more labour-saving product.For wheel rim, make it gentlier more laborsaving, mainly contain two factors.The one, the weight of wheel rim, the one, the windage of wheel rim.Light wheel rim is had an effect soon, climbs brisk, and this fine understanding.And for windage, when riding at a high speed, windage just becomes key very.It is generally acknowledged, windage square is directly proportional with speed.So the design of low windage becomes more and more popular.In order to obtain low windage, one after another Cross section Design is become to stream line pattern.Increasing of cross section, certainly will gain in weight, so, must accept or reject to some extent in weight and low windage.
For weight, than steel, aluminum alloy materials, carbon fiber composite material has unrivaled preceence.Carbon fiber composite material (CFRP), its intensity ratio steel is strong, but density only has 1.6g/cm
3, only have 1/5 of steel, with aluminum alloy, to compare, its modulus is 10 times of aluminium, tensile strength is 2 times of aluminium, but weight only has 40% of aluminum alloy.So carbon fibre material is widely used for making bicycle rim.
Existing bicycle wheel rim made of carbon fibre generally adopts epoxy prepreg, and through lamination, heating extrusion forming makes.Its forming temperature is generally at 150 ℃, molding time 45-60 minute.The glass transition point (also referred to as TG) of the epoxy resin of commonly using is at 100-130 ℃.The wheel rim light weight making with this material and forming process, intensity is high.But the shortcoming of this wheel rim is, in use, while running into long descending, because need long-time brake, the temperature on brake limit can reach 180 ℃ of left and right, the TG point of epoxy resin using due to brake limit only has 100 ℃-130 ℃, under the effect of tire pressure, settle the slotted eye of the inner tube of a tyre soften and open, cause blowing out suddenly, cause the car accident of falling, thereby produce the safety injury to rider.This phenomenon is commonly called as burning frame.
There is dealer to study to exceed the epoxy resin of 220 ℃ with TG and make wheel rim.Although but the epoxy resin of 220 ℃ of TG can solve the safety problem under the high-temperature condition producing in brake, this resin has derived a lot of problems.First, the condition of molding harshness of this high TG resin, need more than 220 ℃, and molding time reaches more than 4 hours, yields poorly down, and moulding is with high costs, is difficult to large-scale application; Secondly, material price costliness, its price is the more than 10 times of general T G resin, large-scale promotion is restricted; The 3rd, be that the interfacial bonding strength of material is poor, be difficult to resistance to very high tire pressure; The 4th, material is more crisp, and impact resistance intensity is low, causes under the general condition of using, if encounter shock, wheel rim is easy to damage, and is also easy to rider to produce injury.
Summary of the invention
The present invention, in order to solve the problem of above-mentioned existence, provides a kind of many TG carbon fibre rim, has overcome the deficiencies in the prior art, in brake part, adopt the epoxy resin carbon fiber material of more than 180 ℃ high TG, fully ensured product intensity under high temperature when brake, guaranteed the safety of product; Non-brake part, adopts 180 ℃ to bend down the epoxy resin carbon fiber material of TG, can improve product impact strength.The epoxide resin material of different TG obtains the use rationalizing, and material cost is reasonably controlled, and can large-scale promotion use.
A kind of preparation method of many TG carbon fibre rim is also provided, the structure disposal integral molding of product, the intensity, durability and the safety that have improved product, practicality is high, and cost is reasonable.
The present invention adopts following technical scheme: many TG carbon fibre rim, by carbon fiber composite material, made, comprise two crossing sidewalls and a connecting bridge, described connecting bridge both sides separate out one for placing position of foetus hole slot and " V " shape inner chamber body of the inner tube of a tyre, the two is and is arranged above and below, near described position of foetus hole slot and connecting bridge, corresponding sidewall is brake limit, described brake limit and connecting bridge are combined into cross section for " H " shape structure, it is characterized in that, described " H " shape structure sidewall corresponding from described inner chamber body adopts respectively the epoxy resin carbon fiber material of 2 kinds or two or more different TG, wherein, described " H " shape structure adopts the epoxy resin carbon fiber material of more than 180 ℃ high TG, sidewall corresponding to described inner chamber body adopts 180 ℃ to bend down the epoxy resin carbon fiber material of TG.
Preferably, the epoxy resin carbon fiber material TG that described " H " shape structure adopts is more than 190 ℃.
Further, the scope of the epoxy resin carbon fiber material TG that described " H " shape structure adopts is 190 ℃ to 220 ℃.
Preferably, the epoxy resin carbon fiber material TG scope that sidewall corresponding to described inner chamber body adopts is 100 ℃ to 180 ℃.
The scope of the epoxy resin carbon fiber material TG value that further, intersection, two side corresponding to described inner chamber body adopts is 100 ℃ to 130 ℃; The epoxy resin carbon fiber material TG scope that all the other sidewalls corresponding to inner chamber body adopt is 150 ℃ to 180 ℃.
Further, the epoxy resin carbon fiber material TG that sidewall corresponding to described inner chamber body adopts is 120 ℃.
The preparation method of above-mentioned many TG carbon fibre rim, comprises the following steps:
Preferably, forming mould comprises that 2 are made with soft material, and respectively with the identical core of the interior shape of the upper and lower part of " H " shape structural carbon circle, the carbon fibre resin preimpregnation cloth of high TG be wrapped in respectively to the surface of core, then insert in forming mould.
Preferably, in step 2, TG scope is laid to the carbon circle of intersection, two side at the carbon fibre resin preimpregnation cloth of 100 ℃ to 130 ℃, the carbon fibre resin preimpregnation cloth in the outside laying of this carbon circle TG scope at 150 ℃ to 180 ℃, forms the inner chamber body carbon circle that a cross section is " V " shape.
Preferably, in step 1, the forming temperature in described baking box is more than 200 ℃, and time of heat is 6 hours; Or the forming temperature in baking box is more than 220 ℃, time of heat is 4 hours.
The present invention has following usefulness: 1, in the brake region of bearing tire pressure, adopt the epoxy resin carbon fiber material of more than 180 ℃ high TG, fully ensured product intensity under high temperature when brake, effectively reduce the burning frame risk of wheel rim, both improved the safety of wheel rim, do not increase again the weight of carbon fibre rim, take into account the requirement of light weight and safety two aspects of product; 2, in non-brake part, adopt 180 ℃ to bend down the epoxy resin carbon fiber material of TG, there is good rigidity and toughness, improve product impact strength; 3, meet the temperature requirement of different parts, the resin material of different TG obtains the application rationalizing, and gives full play to advantage separately, has improved intensity, durability and the safety of product, and practicality is high, can large-scale promotion use.
accompanying drawing explanation
Fig. 1 is bicycle rim structure schematic diagram;
Fig. 2 is the structural representation of the embodiment of the present invention one;
Fig. 3 is the structural representation of the embodiment of the present invention two;
Fig. 4 is " H " of the present invention shape structural representation;
Fig. 5 is the forming die structure schematic diagram of preparation method's of the present invention " H " shape groove;
Fig. 6 is " V " shape inner chamber body carbon coil structures schematic diagram in the embodiment of the present invention one preparation;
Fig. 7 combines pre-type schematic diagram in the embodiment of the present invention one preparation process 3;
Fig. 8 is " V " shape inner chamber body carbon coil structures schematic diagram in the embodiment of the present invention two preparations;
Reference numeral: 1, connecting bridge; 2, sidewall; 21, brake limit; 22, sidewall corresponding to inner chamber body; 23, sidewall intersection; 3, position of foetus hole slot; 4, inner chamber body; 5, the forming mould of " H " shape groove; 51, core; 52, core; 53, " H " shape groove; 7a, inner chamber body bottom sheet; 7b, position of foetus slotted eye sheet material; 7c, separated type material; 7d, airbag; The outside face of a, " H " shape structural carbon circle; The inside face of b, " H " shape structural carbon circle.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, many TG carbon fibre rim, entirety is made by carbon fiber composite material, comprise two crossing sidewalls 2 and a connecting bridge 1, described connecting bridge 1 both sides separate out one for placing position of foetus hole slot 3 and " V " shape inner chamber body 4 of the inner tube of a tyre, and the two is and is arranged above and below, and near position of foetus hole slot 3 and connecting bridge 1, corresponding sidewall is brake limit 21, brake limit 21 and connecting bridge 1 are combined into cross section for " H " shape structure, as shown in Figure 4.
Due to the low thermal conductivity of carbon fiber composite material, the limit 21 that makes to brake, because the heat energy that drag friction produces is difficult for diffusion, easily produces hot stack, thus the temperature rise on the limit that makes to brake according to experiment, show, during brake, the temperature on brake limit can reach 180 ℃ of left and right.Therefore, the specific embodiment of the present invention is for adopting respectively the epoxy resin carbon fiber material of 2 kinds or two or more different TG at " H " shape structure sidewall corresponding from inner chamber body, wherein, " H " shape structure at brake place, limit adopts the epoxy resin carbon fiber material of more than 180 ℃ high TG, and sidewall corresponding to inner chamber body adopts 180 ℃ to bend down the epoxy resin carbon fiber material of TG.
Embodiment mono-
As shown in Figure 2, due in the situation that long descending continues brake, the temperature on brake limit 21 can reach more than 180 ℃, therefore, requires the epoxy resin carbon fiber material TG of " H " shape structure employing more than 190 ℃; Consider that TG value is higher, its cost is also more expensive simultaneously, and interfacial bonding strength and Dent resistance are also poorer, and epoxy resin carbon fiber material TG value is preferably controlled at 220 ℃ below for best.The epoxy resin carbon fiber material TG scope that the sidewall 22 of inner chamber body 4 correspondences adopts is 100 ℃ to 180 ℃.From price and Dent resistance, consider, most preferred, the epoxy resin carbon fiber material TG that two side 22 corresponding to inner chamber body adopts is 120 ℃.
Embodiment bis-
As shown in Figure 3, " H " shape structure is identical with embodiment mono-, and difference is: the scope of the epoxy resin carbon fiber material TG value that intersection, two side 23 corresponding to inner chamber body adopts is 100 ℃ to 130 ℃; The epoxy resin carbon fiber material TG scope that all the other sidewalls of inner chamber body 4 correspondences adopt is 150 ℃ to 180 ℃.
The preparation method of embodiment mono-, comprises the following steps:
As shown in Figure 5, the forming mould 5 of " H " shape groove comprises that 2 are made with soft material, and respectively with the identical core 51,52 of the interior shape of the upper and lower part of " H " shape structural carbon circle, TG scope is wrapped in respectively to the surface of core 51,52 at the carbon fibre resin preimpregnation cloth of 190 ℃ to 220 ℃, then inserts in forming mould 5.
As shown in Figure 8, the preparation method of embodiment bis-, be in step 2 with the method difference of embodiment mono-, TG scope need be laid to the carbon circle of intersection, two side 23 at the carbon fibre resin preimpregnation cloth of 100 ℃ to 130 ℃, carbon fibre resin preimpregnation cloth in the outside laying of this carbon circle TG scope at 150 ℃ to 180 ℃, forms the inner chamber body carbon circle that a cross section is " V " shape.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.
Claims (10)
1. more than TG carbon fibre rim, by carbon fiber composite material, made, comprise two crossing sidewalls and a connecting bridge, described connecting bridge both sides separate out one for placing position of foetus hole slot and " V " shape inner chamber body of the inner tube of a tyre, the two is and is arranged above and below, near described position of foetus hole slot and connecting bridge, corresponding sidewall is brake limit, described brake limit and connecting bridge are combined into cross section for " H " shape structure, it is characterized in that, described " H " shape structure sidewall corresponding from described inner chamber body adopts respectively the epoxy resin carbon fiber material of 2 kinds or two or more different TG, wherein, described " H " shape structure adopts the epoxy resin carbon fiber material of more than 180 ℃ high TG, sidewall corresponding to described inner chamber body adopts 180 ℃ to bend down the epoxy resin carbon fiber material of TG.
2. many TG carbon fibre rim as claimed in claim 1, is characterized in that, the epoxy resin carbon fiber material TG that described " H " shape structure adopts is more than 190 ℃.
3. many TG carbon fibre rim as claimed in claim 2, is characterized in that, the scope of the epoxy resin carbon fiber material TG that described " H " shape structure adopts is 190 ℃ to 220 ℃.
4. many TG carbon fibre rim as claimed in claim 1, is characterized in that, the epoxy resin carbon fiber material TG scope that sidewall corresponding to described inner chamber body adopts is 100 ℃ to 180 ℃.
5. many TG carbon fibre rim as claimed in claim 4, is characterized in that, the scope of the epoxy resin carbon fiber material TG value that intersection, two side corresponding to described inner chamber body adopts is 100 ℃ to 130 ℃; The epoxy resin carbon fiber material TG scope that all the other sidewalls corresponding to inner chamber body adopt is 150 ℃ to 180 ℃.
6. many TG carbon fibre rim as claimed in claim 4, is characterized in that, the epoxy resin carbon fiber material TG that sidewall corresponding to described inner chamber body adopts is 120 ℃.
7. the preparation method of the many TG carbon fibre rim as described in claim 1-6 any one, is characterized in that, comprises the following steps:
Step 1, the moulding of " H " shape structural carbon circle: make the forming mould of " H " shape groove, the carbon fibre resin preimpregnation cloth laying of high TG, on " H " of this mould shape groove, will be put into high temperature roaster moulding after mold-locked, the demoulding is standby;
Step 2, the moulding of " V " shape inner chamber body carbon circle: the carbon fibre resin preimpregnation cloth of low TG is become to the inner chamber body carbon circle that a cross section is " V " shape according to the inner chamber body shape lamination of wheel rim, at the opening part of V-arrangement inner chamber body carbon circle, be reserved with the carbon fibre initial rinse sheet material of being combined with " H " shape structural carbon circle, be respectively position of foetus slotted eye sheet material and inner chamber body bottom sheet, with separated type material, separate between the two; Airbag is inserted in the groove of V-arrangement inner chamber body carbon circle;
Step 3, combine pre-type: the correspondence position of " H " shape structural carbon circle being placed to the opening part of " V " shape inner chamber body carbon circle, the position of foetus slotted eye sheet material on opening part both sides is fitted in the outside face of " H " shape structural carbon circle, inner chamber body bottom sheet is fitted in " H " shape structural carbon circle inside face, shape according to position of foetus slotted eye and inner chamber body is carried out lamination, thereby makes wheel rim pre-type product;
Step 4, the moulding of wheel rim blank: wheel rim pre-type product is put into steel die, then put into former, matched moulds fills high pressure gas moulding in moulding airbag; The wheel rim blank product of moulding are removed to burr, take out moulding airbag; In position of foetus hole slot and cavity bottom boring; Paint baking is carried out on surface.
8. the preparation method of many TG carbon fibre rim as claimed in claim 7, it is characterized in that, in step 1, forming mould comprises that 2 pieces make with soft material, and respectively with the identical core of the interior shape of the upper and lower part of " H " shape structural carbon circle, the carbon fibre resin preimpregnation cloth of high TG is wrapped in respectively to the surface of core, then inserts in forming mould.
9. the preparation method of many TG carbon fibre rim as claimed in claim 7, it is characterized in that, in step 2, TG scope is laid to the carbon circle of intersection, two side at the carbon fibre resin preimpregnation cloth of 100 ℃ to 130 ℃, carbon fibre resin preimpregnation cloth in the outside laying of this carbon circle TG scope at 150 ℃ to 180 ℃, forms the inner chamber body carbon circle that a cross section is " V " shape.
10. the preparation method of many TG carbon fibre rim as claimed in claim 7, is characterized in that, in step 1, the forming temperature in described baking box is more than 200 ℃, and time of heat is 6 hours; Or the forming temperature in baking box is more than 220 ℃, time of heat is 4 hours.
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| CN201410031202.2A CN103722977B (en) | 2014-01-23 | 2014-01-23 | Many TG carbon fibre rim and preparation method thereof |
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| CN201410031202.2A CN103722977B (en) | 2014-01-23 | 2014-01-23 | Many TG carbon fibre rim and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110370677A (en) * | 2019-07-24 | 2019-10-25 | 天津爱思达航天科技有限公司 | A kind of manufacturing method of radome fairing |
| CN110815861A (en) * | 2018-08-08 | 2020-02-21 | 龙台工业股份有限公司 | Manufacturing method of carbon fiber wheel frame |
| TWI716716B (en) * | 2018-08-06 | 2021-01-21 | 英屬維爾京群島商龍台工業股份有限公司 | Method of manufacturing a carbon fiber wheel rim |
| CN113787691A (en) * | 2021-09-10 | 2021-12-14 | 厦门新旺新材料科技有限公司 | Forming method of rim-shaped composite material |
| CN114161752A (en) * | 2021-12-01 | 2022-03-11 | 纤镀复材科技(厦门)有限公司 | Method for manufacturing carbon fiber rim of bicycle |
| CN114368178A (en) * | 2021-12-16 | 2022-04-19 | 捷和电机制品(深圳)有限公司 | Manufacturing method of hub and manufacturing method of omni wheel |
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| CN114368178A (en) * | 2021-12-16 | 2022-04-19 | 捷和电机制品(深圳)有限公司 | Manufacturing method of hub and manufacturing method of omni wheel |
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| CN103722977B (en) | 2016-03-30 |
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Denomination of invention: Multi TG carbon fiber wheel and its preparation method Effective date of registration: 20210419 Granted publication date: 20160330 Pledgee: Bank of China Limited Xiamen Jimei sub branch Pledgor: XIAMEN CARBONKING COMPOSITES TECHNOLOGY Co.,Ltd. Registration number: Y2021980002751 |