CN103552610A - Automobile opening part and manufacturing method thereof - Google Patents

Automobile opening part and manufacturing method thereof Download PDF

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Publication number
CN103552610A
CN103552610A CN201310582706.9A CN201310582706A CN103552610A CN 103552610 A CN103552610 A CN 103552610A CN 201310582706 A CN201310582706 A CN 201310582706A CN 103552610 A CN103552610 A CN 103552610A
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subgrade
fiber
fiber preform
parts
perform manufacturing
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CN103552610B (en
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祝颖丹
秦永利
滑聪
孟令军
蔡晶
熊鑫
范欣愉
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Ningbo Institute of Material Technology and Engineering of CAS
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Ningbo Institute of Material Technology and Engineering of CAS
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Abstract

The invention relates to an automobile opening part and a manufacturing method thereof. Specifically, the automobile opening part is made of continuous fiber reinforced thermoplastic resin or a thermosetting resin composite material. The automobile opening part is formed by a fiber preforming body through a composite material forming process, the fiber preforming body is provided with one or more weft-wise fiber preforming body sub-layers, and the outlines of the weft-wise fiber preforming body sub-layers are basically overlapped with the outline of the part; and the fiber preforming body is provided with one or more warp-wise fiber preforming body sub-layers, and the outlines of the warp-wise fiber preforming body sub-layers are basically overlapped with the outlines of the weft-wise fiber preforming body sub-layers. The automobile opening part and the manufacturing method have the advantages as follows: the mass is light, the strength is high, energy conservation and environmental protection are realized, the cost is low, the forming efficiency is high and the like, and the part is suitable for continuous automatic batch production and has a very wide application prospect.

Description

A kind of automotive openings parts and preparation method thereof
Technical field
The invention belongs to auto-industry and field of compound material, particularly, relate to a kind of fiber reinforced composite automotive openings parts and preparation method thereof.
Background technology
Due to the green-house effect of global warming and the energy shock becoming increasingly conspicuous, energy-conservation and environmental protection becomes the most important proposition that countries in the world auto-industry face.Automotive light weight technology technology is for new-energy automobile and traditional combustion engine automobile saving energy resource consumption, reduces one of effective technical way of environmental pollution.Fiber reinforced composite have a series of excellent properties such as high specific strength, high ratio modulus, antifatigue, withstanding corrosion, designability be strong, have become in recent years the lightweight mainstream technology trend of auto industry field.
Current, World Main Auto maker, in future automobile technology blueprint, all adopts fiber composite materials, especially carbon fiber composite material in large quantities, realizes the breakthrough of lightweight and Gao Bi performance matter.Ford research shows, the composite material of appropriate design can reduce 80% by parts, and the relative steel of processing charges reduce by 60%, and bonding expense is relatively welded and reduced 25% to 40%, and composite structure shows fabulous toughness and anti-collision performance.Authority studies show that, if vehicle complete vehicle weight reducing 10%, fuel efficiency can improve 6%-8%; 100 kilograms of the every minimizings of automobile curb mass, fuel consumption of 100km can reduce by 0.3-0.6 liter.From rideability and crash survivability aspect, after automotive light weight technology, accelerating ability improves, and stopping distance reduces, and during collision, inertia reduces, and vehicle control sensitieness, stability, noise and vibration aspect are also all improved.
At present, the application of succeeding gradually on automobile of continuous fiber reinforced composite materials product, still, is mainly used in the hard ware that substitutes the non-large opening/class of windowing, such as back box lid, ceiling, collision prevention girders etc.To the parts with opening/window type, structure member especially, as vehicle side, adopting conventional fabric to prepare need to be at the position cut fibres of windowing, can cause local serious stress to be concentrated, greatly reduce the load-carrying capacity of composite structure, cannot meet the performance requriements of vehicle side.
In sum, this area is simple in the urgent need to developing a kind of preparation method, avoid interrupting fiber at the position of windowing, and excellent performance, cost is low, shaping efficiency is high automotive openings parts.
Summary of the invention
Technical purpose of the present invention is for above-mentioned the deficiencies in the prior art, and a kind of excellent performance, cost is low, shaping efficiency is high automotive openings parts and preparation method thereof are provided.
In first aspect present invention, a kind of automotive openings parts are provided, described automotive openings parts are made by composite material process planning by perform manufacturing, and
Described perform manufacturing has one or more weft fiber preform subgrades, and the profile of described weft fiber preform subgrade overlaps substantially with the profile of described parts; And
Described perform manufacturing has one or more warp fiber preform subgrades, and the profile of described warp fiber preform subgrade overlaps substantially with the profile of described weft fiber preform subgrade.
In another preference, described automotive openings parts are the parts with opening/window, and wherein, the area S1 of described opening/window is 12cm 2≤ S1≤2m 2.
In another preference, the gabarit sectional area S2 of described parts is 30cm 2≤ S2≤4m 2.
In another preference, the area S1 of described opening/window: gabarit sectional area S2=1/10-19/20, preferably account for 1/5-9/10, more preferably account for 1/3-7/8, account for best 1/2-4/5.
In another preference, described automotive openings parts are vehicle side parts.
In another preference, overall shape and the automotive openings component shape of described warp fiber preform subgrade are same or similar.
In another preference, fiber track and/or the overall shape of described weft fiber preform subgrade are similar or identical with automotive openings parts.
In another preference, every layer of described warp fiber preform subgrade consists of 1-100 root fiber, preferably 1-20 root fiber, consists of, and more preferably 1-5 root fiber, consists of, and consists of best 1 fiber.
Described warp fiber preform subgrade has the warp fiber axle intersecting with weft fiber direction.Preferably, the warp fiber number of axle of every layer of warp fiber preform subgrade is 10~10,000,000, is preferably 15-1000 root.
In another preference, press the circumference calculating of opening, the density of the warp fiber axle of warp fiber preform subgrade is generally 3-50 root/cm, is preferably 5-25 root/cm.
In another preference, described perform manufacturing comprises a plurality of warp fiber preform subgrades and a plurality of weft fiber preform subgrade.
In another preference, the orientation of the warp fiber axle of each warp fiber preform subgrade can be identical, can be different.For example, ground floor orientation 45 degree, second layer orientation-45 degree.
In another preference, the orientation of each warp fiber axle in each warp fiber preform subgrade can be identical, can be different.For example, be oriented to 45 degree and-45 degree.
In another preference, described warp fiber axle has identical or essentially identical distribution density in each position of automotive openings parts.
In another preference, described warp fiber axle has different distribution densities in each position of automotive openings parts.
In another preference, described warp fiber axle can be straight line, curve, or its combination.
In another preference, every layer of weft fiber preform subgrade consists of 1-100 root fiber, preferably 1-20 root fiber, consists of, and more preferably 1-5 root fiber, consists of, and consists of best 1 fiber.
In another preference, described weft fiber preform subgrade is by the outside lay in the form of a ring in center.Preferably, the general shape of described weft fiber preform subgrade can be circle, subcircular, ellipse, near oval or spiral yarn shaped, or its combination, is preferably spiral yarn shaped, and the fiber number of turns of every one deck weft fiber preform subgrade is 3~2,000 circle.
In another preference, described perform manufacturing is comprised of 1-20 layer warp fiber preform subgrade and 1-20 layer weft fiber preform subgrade, more preferably by 1-10 layer warp fiber preform subgrade and 1-10 layer weft fiber preform subgrade, formed, by 1-5 layer warp fiber preform subgrade and 1-5 layer weft fiber preform subgrade, formed best.
In another preference, in described perform manufacturing, the quantity of described warp fiber preform subgrade and described weft fiber preform subgrade is identical.
In another preference, in described perform manufacturing, the quantity of described warp fiber preform subgrade and described weft fiber preform subgrade is different.
In another preference, described perform manufacturing is ring-type or near-ring shape, and the sectional area of described perform manufacturing accounts for the 1/20-9/10 of described parts gabarit sectional area, preferably accounts for 1/10-4/5, more preferably accounts for 1/8-2/3, accounts for best 1/5-1/2.
In another preference, the middle part of described ring-type or near-ring shape finger part or perform manufacturing has hole, and the sectional area in described hole accounts for the more than 1/3 of sectional area of described parts gabarit.
In another preference, described ring-type refers to that there is the structure of opening in central authorities, and preferably, described ring-type comprises annulus, elliptical ring, Q-RING, triangle ring, polygon ring or irregular shape ring.
In another preference, the outer contour shape of described perform manufacturing is selected from lower group: circle, oval, square, triangle, polygon or irregularly shaped.
In another preference, described opening shape is selected from lower group: circle, oval, square, triangle, polygon or irregularly shaped.
In another preference, the volume of described perform manufacturing accounts for the 1/4-2/3 of the cumulative volume of described parts.
In another preference, described perform manufacturing is comprised of 1-20 layer warp fiber preform subgrade and 1-20 layer weft fiber preform subgrade, more preferably by 1-10 layer warp fiber preform subgrade and 1-10 layer weft fiber preform subgrade, formed, by 1-5 layer warp fiber preform subgrade and 1-5 layer weft fiber preform subgrade, formed best.
In another preference, the perform manufacturing of described automotive openings parts at least forms perform manufacturing individual layer by 1 layer of warp fiber preform subgrade and 1 layer of weft fiber preform subgrade.
In another preference, described automotive openings element fiber preform has at least 1 perform manufacturing individual layer.
In another preference, described perform manufacturing is comprised of 1-20 root fibre bundle, preferably 1-10 root fibre bundle, consists of, and more preferably 1-5 root fibre bundle, consists of, and consists of best a fibre bundle.
In another preference, described fibre bundle is one or more fibrous fiber group, and described fiber group comprises at least one fortifying fibre.
In another preference, described fortifying fibre comprises the fiber that is selected from lower group: carbon fiber, aramid fiber, glass fibre, basalt fibre, natural fiber, or its combination.
In another preference, described fortifying fibre is the fortifying fibre of pre-soaked resin.
In another preference, described fortifying fibre is the fortifying fibre of resin pickup not.
In another preference, described resin is thermoplastic base resin or thermosetting resin.
In another preference, in described fibre bundle, also comprise thermoplastic resin fibre.
In another preference, described fibre bundle or be the assorted fibre that fortifying fibre and thermoplastic resin fibre form.
In another preference, described thermoplastic resin fibre is crystallization shape or amorphous resin fiber, preferably, described thermoplastic resin fibre is selected from lower group: polypropylene, polyethylene, polyamide, poly(lactic acid), polyphenylene sulfide, polyetherimide, polyimide, polyetheretherketone, or its combination.
A second aspect of the present invention, provides a kind of preparation method of the automotive openings parts as described in first aspect present invention, and described method comprises step:
According to the shape of parts, size and stressing conditions, prepare perform manufacturing;
Prepared perform manufacturing is inserted in the mould of target product, by composite material process planning, make described parts.
In another preference, described perform manufacturing is carried out to fiber orientation design.
In another preference, described design process comprises: described parts are carried out to force analysis, determine direction and the size of the main bearing load of described parts, and the geometric configuration of bonded block and size design perform manufacturing, make the fiber orientation of perform manufacturing and the stressed loading side of parts to consistent or basically identical, shape, size, thickness and parts match.
In another preference, described forming process is selected from lower group: liquid composite molding technique, autoclave forming process, hot press forming technology or, or its combination.
In another preference, while not comprising thermoplastic resin fibre in described fibre bundle, described forming process is composite liquid mould-forming technique, autoclave forming process, or its combination.
In another preference, when described fibre bundle comprises thermoplastic resin fibre, described forming process is hot press forming technology.
A third aspect of the present invention, provides a kind of automobile, and described automobile has the opening features as described in first aspect present invention.
In another preference, described opening features is vehicle side parts.
In another preference, described opening features is roof of the vehicle parts.
In another preference, described opening features is automobile windowing component.
In another preference, the opening of described parts is inlaid with glass.
Fourth aspect present invention, provides a kind of perform manufacturing, and described perform manufacturing is the perform manufacturing for the preparation of the parts as described in first aspect present invention.
In should be understood that within the scope of the present invention, above-mentioned each technical characterictic of the present invention and can combining mutually between specifically described each technical characterictic in below (eg embodiment), thus form new or preferred technical scheme.As space is limited, at this, tire out and state no longer one by one.
Accompanying drawing explanation
Fig. 1 is vehicle side three-dimensional model diagram.
Fig. 2 is the fiber track schematic diagram of the warp fiber preform of vehicle side fiber preform.
Fig. 3 is the fiber track schematic diagram of the weft fiber preform of vehicle side fiber preform.
Fig. 4 is the fiber track schematic diagram of vehicle side fiber preforming the second warp fiber preform.
Fig. 5 is the schematic diagram that Composites Molding Techniques is made vehicle side.
Wherein numeral is: 1 is that bed die, 2 is that mold release, 3 is that fiber preform, 4 is that sealing joint strip, 5 is mold.
Fig. 6 is the carbon fiber/epoxy resin composite material vehicle side of preparation.
Fig. 7 is the section drawing of vehicle side perform manufacturing, and wherein, Dark grey partly represents perform manufacturing, and light grey part represents the hole at perform manufacturing middle part.
Fig. 8 is roof of the vehicle three-dimensional model diagram.
Fig. 9 is the fiber track schematic diagram of the warp fiber preform of roof of the vehicle perform manufacturing.
Figure 10 is the fiber track schematic diagram of the weft fiber preform of roof of the vehicle perform manufacturing.
The specific embodiment
The inventor is through long-term and deep research, surprisingly find first the preparation method of vehicle side, can adopt fibre bundle directly to prepare vehicle side, avoid opening to interrupt fiber, have that high-strength light, energy-conserving and environment-protective, cost are low, shaping efficiency advantages of higher, can realize mass continuous automatic production, there is very wide application prospect.Contriver has completed the present invention on this basis.
Term
As used herein, term " sectional area of perform manufacturing " represents the area of Dark grey part as shown in Figure 7; Term " parts hole area " represents the area of light grey part as shown in Figure 7; Term " parts gabarit sectional area " represents Dark grey part area+light grey part area as shown in Figure 7.
Term " automotive openings parts " refers to the automobile component with opening, perforate or fenestration.
Term " fibre bundle " refers to one or more fibrous fiber group, and wherein, the length that forms each fiber of fibre bundle can be identical or close.In the present invention, preferred fibre bundle comprises at least one fortifying fibre.
Perform manufacturing
The invention provides a kind of perform manufacturing, described perform manufacturing can be used for preparing automotive openings parts by composite material process planning.Wherein, described preform comprises at least one warp fiber preform subgrade and at least one the weft fiber preform subgrade being superimposed.
Wherein, the mode that stacks of warp fiber preform subgrade and weft fiber preform subgrade can be arbitrarily, as being " warp fiber preform subgrade → weft fiber preform subgrade → warp fiber preform subgrade ", or " warp fiber preform subgrade → warp fiber preform subgrade → weft fiber preform subgrade → warp fiber preform subgrade " etc.
As used herein, term " warp fiber preform subgrade " refers to the fibrage that in described perform manufacturing, fiber orientation and weft fiber direction are intersected.
Conventionally, each warp fiber preform subgrade has a plurality of warp fiber axles.Each warp fiber axle can point to or substantially point to and converge at center or the central area of opening.
Although in same warp fiber preform subgrade, the orientation of each warp fiber axle (or the corner dimension forming with edge of opening) can be identical or different, preferably identical or basic identical.
In addition, when containing a plurality of warp fiber preform subgrade, the orientation of the warp fiber axle of each warp fiber preform subgrade can be identical, can be different.For example, ground floor orientation 45 degree, second layer orientation-45 degree.
In each warp fiber preform subgrade, the orientation of each warp fiber axle can be also identical or different.For example, 45 degree and-45 that are oriented to of warp fiber axle are spent (as shown in Figure 4).
In the present invention, the quantity of warp fiber axle is not particularly limited, and conventionally depends on that the size of opening is with the size of parts.Generally, press the circumference calculating of opening, the density of the warp fiber axle of warp fiber layers is generally 3-50 root/cm, is preferably 5-25 root/cm.
In another preference, the warp fiber number of axle of every one deck warp fiber layers is 10~10,000,000, is preferably 15-1000 root.In the present invention, every layer of warp fiber preform subgrade can consist of one or more fiber, preferably a fiber, consists of, and all warp fiber axles in a warp fiber preform subgrade are formed by single fiber.More preferably, a plurality of or all warp fiber preform subgrades are to consist of a fiber.
As used herein, term " weft fiber preform subgrade " refers in perform manufacturing of the present invention, the fibrage that fiber orientation is parallel or substantially parallel with the outline of opening features.
In the present invention, the general shape of described weft fiber preform can be annular or near-ring shape.Weft fiber preform can be (as the circle) of sealing, can be also (as the helix) of not sealing.Preferably, the fiber shape of weft fiber preform of the present invention is helix.
In the present invention, the number of turns of weft fiber preform is not particularly limited, and conventionally depends on the factor such as shape, size, desirable strength of device.Generally, in described perform manufacturing, the fiber number of turns of described weft fiber preform subgrade is generally 1-50 root/cm, is preferably 3-25 root/cm.
In another preference, the fiber number of turns of every one deck weft fiber preform subgrade is 3~2,000 circle.
In the present invention, weft fiber preform subgrade can consist of one or more fiber, preferably a fiber, consist of, all weft fibers in a weft fiber preform subgrade form (especially helix weft fiber preform subgrade) by single fiber.
More preferably, a plurality of or all weft fiber preform subgrades consist of a fiber.
In the present invention, a kind of particularly preferred mode is that a plurality of or all warp fiber preform subgrades and weft fiber preform subgrade in opening features all consists of a fiber.Like this, it is continuous making perform manufacturings all in opening features, thereby can significantly improve intensity.
The number of plies of described perform manufacturing can change according to the size of product, thickness.In preference of the present invention, described perform manufacturing is comprised of 1-20 layer warp fiber preform subgrade and 1-20 layer weft fiber preform subgrade, more preferably by 1-10 layer warp fiber preform subgrade and 1-10 layer weft fiber preform subgrade, formed, by 1-5 layer warp fiber preform subgrade and 1-5 layer weft fiber preform subgrade, formed best.
In the present invention, described perform manufacturing has warp fiber preform subgrade number and weft fiber preform subgrade number can be identical or different.Preferably, can require to determine warp fiber preform subgrade number and weft fiber preform subgrade number according to the design stressing conditions of parts, mechanical property and important etc., as: 2 layers of warp fiber preform subgrade and 2 layers of weft fiber preform subgrade, or 3 layers of warp fiber preform subgrade and 2 layers of weft fiber preform subgrade etc.
Automotive openings parts
The present invention also provides a kind of automotive openings parts, and described automotive openings parts are to prepare with above-mentioned perform manufacturing.
Described automotive openings parts refer to have opening/parts of windowing, and the size of the size of described parts and opening/window is according to the purposes of parts, factors such as vehicle and determining, and conventionally, the area S1 of described opening/window is 12cm 2≤ S1≤2m 2.
The volume of described parts (or gabarit sectional area) is not particularly limited, and can prepare as required the parts of corresponding size, and conventionally, the gabarit sectional area S2 of described parts is 30cm 2≤ S2≤4m 2.
Preferably, the area S1 of described opening/window: gabarit sectional area S2=1/10-19/20, preferably account for 1/5-9/10, more preferably account for 1/3-7/8, account for best 1/2-4/5.
Preferably, described automotive openings parts are that described perform manufacturing is prepared by composite material process planning, as liquid composite molding technique, autoclave forming process, hot press forming technology etc.
In another preference, described parts are prepared by the method comprising the following steps:
According to the shape of parts, size and stressing conditions, prepare perform manufacturing;
Prepared perform manufacturing is inserted in the mould of target product, by composite material process planning, make described parts.
In another preference, described perform manufacturing is carried out to fiber orientation design.
In another preference, described design process comprises: described parts are carried out to force analysis, determine direction and the size of the main bearing load of described parts, and the geometric configuration of bonded block, size and structural requirement design perform manufacturing, make the fiber orientation of perform manufacturing and the stressed loading side of parts to consistent or basically identical, shape, size, thickness and parts match.
Described automotive openings parts can be the parts arbitrarily with large opening, as vehicle side, car roof, vehicle window etc.
Major advantage of the present invention comprises:
(1) the automotive openings parts that adopt automotive openings parts preparation method of the present invention to make, both maintained the performance such as rigidity, intensity of opening features, and compare and realized loss of weight more than 50% with metal automobile opening features, and mechanical property is excellent, reaches the object of fuel-saving environmental protection.
(2) automotive openings parts preparation method of the present invention, each step can realize serialization and automatically produce, and production efficiency improves greatly, is applicable to suitability for industrialized production.
(3) product that automotive openings parts preparation method of the present invention makes is clean body, almost without pruning, can save a large amount of finishing times.
(4) automotive openings parts of the present invention, have avoided interrupting fiber at the position of windowing, and compare with the automotive openings parts that adopt fabric to prepare, and mechanical property significantly improves.
(5) automotive openings element fiber preform of the present invention adopts fibre bundle lay to form, and produces hardly the waste of fiber, while especially adopting expensive carbon fiber, has greatly reduced the cost of raw material.
Below in conjunction with concrete enforcement, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.The experimental technique of unreceipted actual conditions in the following example, conventionally according to normal condition, or the condition of advising according to manufacturer.Unless otherwise indicated, otherwise percentum and umber calculate by weight.Unless stated otherwise, raw materials used all commercially available the obtaining of the present invention.
The preparation method of the carbon-fibre reinforced O compoiste material vehicle side of embodiment 1
Material: eastern beautiful T700-12K continuous carbon fibre tow and epoxy-resin systems (EpoTech 167 A:EpoTech 175 B=100:21)
Step 1: the fiber track design of vehicle side perform manufacturing
According to the shape of the vehicle side shown in Fig. 1, size and stressing conditions, design fiber track as shown in Figure 2, Figure 3, Figure 4.Individual layer a fiber track is formed by stacking by warp-wise track preform layer as shown in Figure 2 and the broadwise track preform layer shown in Fig. 3, and warp-wise track preform layer as shown in Figure 4 of individual layer b and the broadwise track preform layer shown in Fig. 3 are formed by stacking.
Step 2: the preparation of vehicle side fiber preform
According to the fiber track shown in Fig. 2, Fig. 3, Fig. 4, adopt lignilite that carbon fibre tow is fixed on and on ground, makes three individual layer vehicle side perform manufacturings, wherein the first and the 3rd individual layer adopts individual layer a structure, the second individual layer adopts individual layer b structure, by three single layer fibre preforms laying that superposes, is that vehicle side perform manufacturing is stand-by.
Step 3: the preparation of vehicle side
Shown in Fig. 5, vehicle side perform manufacturing is put into mould, by composite material liquid condition shaping technology, prepare vehicle side.The lay order starting from bed die 1 surface is: mold release 2, preform 3, mold release 2, sealing rubber strip 4, mold 5; Closed mold 5 and bed die 1, the perform manufacturing in compacting die cavity, after inspection sealing, curing molding after injection ring epoxy resin system, obtains carbon fiber/epoxy resin composite material vehicle side, as shown in Figure 6.
Through material object, weigh, steel vehicle side weight is 15.5Kg, and carbon fiber/epoxy resin composite material vehicle side weight is 6.8Kg, realizes loss of weight and reaches 56%, and the intensity of carbon fiber/epoxy resin composite material vehicle side is suitable with steel vehicle side.
The preparation method of embodiment 2 carbon fiber reinforced polypropylene compound material roofs of the vehicle
Material: eastern beautiful T700-12K continuous carbon fibre tow and acrylic resin fiber
Step 1: the fiber track design of roof of the vehicle perform manufacturing
According to the shape of the roof of the vehicle shown in Fig. 8, size and stressing conditions, design fiber track as shown in Figure 9, Figure 10.Individual layer a fiber track is formed by stacking by warp-wise track preform layer as shown in Figure 9 and the broadwise track preform layer shown in Figure 10.
Step 2: the preparation of roof of the vehicle fiber preform
According to the fiber track shown in Fig. 9, Figure 10, adopt lignilite that carbon fibre tow is fixed on and on ground, makes two individual layer roof of the vehicle perform manufacturings, by two single layer fibre preforms laying that superposes, be that roof of the vehicle perform manufacturing is stand-by.
Step 3: the preparation of roof of the vehicle
Shown in Fig. 5, roof of the vehicle perform manufacturing is put into mould, by hot extrusion briquetting technique, prepare roof of the vehicle.The lay order starting from bed die 1 surface is: mold release 2, preform 3, mold release 2, mold 5; Closed mold 5 and bed die 1, the perform manufacturing in compacting die cavity, hot-forming after pressurized, heated, obtain carbon fiber/polypropylene composite material roof of the vehicle.
Through material object, weigh, steel roof of the vehicle weight is 9.4Kg, and carbon fiber/epoxy resin composite material roof of the vehicle weight is 5.1Kg, realizes loss of weight and reaches 54%, and the intensity of carbon fiber/epoxy resin composite material roof of the vehicle is suitable with steel roof of the vehicle.
In sum:
1. compare with metal automobile opening features, production method of the present invention has adopted the fiber reinforced composite of lightweight, excellent performance as the making raw material of automotive openings parts, the opening features making is when maintaining the performances such as rigidity, intensity, also realized opening features loss of weight more than 50%, and mechanical property is excellent.
2. in prior art, conventionally adopt fabric to prepare the opening/product of windowing, the opening/position of windowing has cut off fiber, causes local serious stress to be concentrated, and greatly reduces the load-carrying capacity of composite structure, and causes a large amount of fiber waste, inefficiency.And preparation method of the present invention, directly adopt fibre bundle to prepare automotive openings element fiber preform, can avoid at the opening/position cut fibres of windowing, almost without the waste of lamination coating, and the preform preparation of product is separated with the forming process of product, realized the continuous automatic production of automotive openings parts, significantly shortened the fabrication cycle of automotive openings parts, greatly improve its production efficiency, be applicable to suitability for industrialized production.
All documents of mentioning in the present invention are all quoted as a reference in this application, just as each piece of document, are quoted as a reference separately.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read above-mentioned instruction content of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.

Claims (10)

1. automotive openings parts, is characterized in that, described automotive openings parts are made by composite material process planning by perform manufacturing, and
Described perform manufacturing has one or more weft fiber preform subgrades, and the profile of described weft fiber preform subgrade overlaps substantially with the profile of described parts; And
Described perform manufacturing has one or more warp fiber preform subgrades, and the profile of described warp fiber preform subgrade overlaps substantially with the profile of described weft fiber preform subgrade.
2. automotive openings parts as claimed in claim 1, it is characterized in that, described perform manufacturing is ring-type or near-ring shape, and the sectional area of described perform manufacturing accounts for the 1/20-9/10 of described parts gabarit sectional area, preferably account for 1/10-4/5, more preferably account for 1/8-2/3, account for best 1/5-1/2.
3. automotive openings parts as claimed in claim 1, it is characterized in that, described perform manufacturing is comprised of 1-20 layer warp fiber preform subgrade and 1-20 layer weft fiber preform subgrade, more preferably by 1-10 layer warp fiber preform subgrade and 1-10 layer weft fiber preform subgrade, formed, by 1-5 layer warp fiber preform subgrade and 1-5 layer weft fiber preform subgrade, formed best.
4. automotive openings parts as claimed in claim 1, it is characterized in that, described perform manufacturing is comprised of 1-20 root fibre bundle, preferably 1-10 root fibre bundle, consists of, more preferably by 1-5 root fibre bundle, formed, by a fibre bundle, formed best.
5. automotive openings parts as claimed in claim 1, is characterized in that, described fibre bundle is one or more fibrous fiber group, and described fiber group comprises at least one fortifying fibre.
6. automotive openings parts as claimed in claim 5, is characterized in that, described fortifying fibre comprises the fiber that is selected from lower group: carbon fiber, aramid fiber, glass fibre, basalt fibre, natural fiber, or its combination.
7. automotive openings parts as claimed in claim 5, is characterized in that, also comprise thermoplastic resin fibre in described fibre bundle.
8. the preparation method of automotive openings parts as claimed in claim 1, is characterized in that, comprises step:
According to the shape of parts, size and stressing conditions, prepare perform manufacturing;
Prepared perform manufacturing is inserted in the mould of target product, by composite material process planning, make described parts;
Preferably, described forming process is selected from lower group: liquid composite molding technique, autoclave forming process, hot press forming technology.
9. an automobile, is characterized in that, described automobile has the opening features as described in as arbitrary in claim 1-7.
10. a perform manufacturing, is characterized in that, described perform manufacturing is the perform manufacturing for the preparation of the parts as described in as arbitrary in claim 1-7.
CN201310582706.9A 2013-11-19 2013-11-19 A kind of automotive openings component and preparation method thereof Active CN103552610B (en)

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