CN207468529U - The structure of soft carbon fibre composite - Google Patents

Abstract

The utility model is about a kind of structure of soft carbon fibre composite, it includes carbon fibre fabric and thermoplastic resin, the carbon fibre fabric has the surface of solid grain, the thermoplastic resin is fully distributed in the carbon fibre fabric, and the carbon fibre fabric at least surface with solid grain is covered in, and with solid grain corresponding with the carbon fibre fabric.

Description

The structure of soft carbon fibre composite

Technical field

For the utility model about a kind of structure of soft carbon fibre composite, espespecially a kind of carbon fibre fabric and heat are plastic Property resin between be well combined, and surface present solid grain soft carbon fibre composite structure.

Background technology

Existing shielding electromagnetic interference (EMI) method in electronic product is uses conductive coating paint or metallic diaphragm or gold Belong to the fabric of plating and the glued membrane of tool electric conductivity etc..Discovered in recent years carbon fiber has shielding EMI functions in itself, but due to conventional carbon The carbon fibre product of the multiple material of fibre is useful in strong, the light product characteristic of hard, rigidity, such as：Bicycle, automobile, aircraft or specific army Thing purposes, and present carbon fibre composite can be fabricated to soft carbon fibre composite, therefore handbag, luggage can be used in On the people's livelihood articles for use such as case and wallet, make product with preventing radio frequency identification side recording function.

Existing soft carbon fibre composite is usually carbon fiber-reinforced thermoplastic resin composite material or abbreviation thermoplastic Property carbon fibre composite, can be as manufactured by various distinct methods：

Chinese T W590888 provides a kind of manufacturing method of plastic composites product, wherein the plastic composites packet Contain：One bonding medium layer, a plastic layer and a precoat, the bonding medium layer include：One hot melt gel matrix, majority, which contain, is immersed in this The fiber of hot melt adhesive Medium Culture and two surfaces separately, and the plastic layer is made of plastic raw materials, the precoat is then It is to be formed by fibrage, above-mentioned plastic layer and precoat simultaneously cohere on two surfaces of bonding medium layer respectively.When aforementioned each Layer fits and heated when being pressurized, and hot melt gel matrix can flow to precoat and plastic layer and in combination, the knot for consolidating each layer It closes.

The composite material that Chinese T W572825 is provided includes：One base cloth layer being made of fibrous material, two film layers And an at least bonding layer, the wherein base cloth layer have one first basal plane and one second basal plane, it is characterised in that：Such film layer is all To be made of thermoplastic polyurethane elastomer (TPU), and be laid on respectively on two basal planes of base cloth layer, base cloth layer with diamines at Agent processing is managed, and can be pressurizeed and firmly the gluing bonding layer and base cloth layer, and be formed simultaneously a smooth surface by heating.

Chinese T W410196 provides a kind of method for being used to prepare tool fabric lines thermoplastic composite molded product, including The following steps, a) prepare fabric reinforced thermoplastic's plastic composite media sheet, wherein the thermoplastic for the transparency and The fabric has fabric lines；B) composite material sheet is cut into be intended to shape；C) it is compound after preheating step b) is cut Material enables its softening；D) composite material after the pre- thermal softenings of step c) is subject to punching press under 30 DEG C~150 DEG C of mold temperature Molding；And e) by step d) punch forming object cooling and shapings, and formed an appearance have fabric lines thermoplastic composite into Type product.

The preparation method of various thermoplasticity composite materials that above-mentioned Patent Case is provided is nothing more than with fiber or fiber volume Layer based on fabric, then made by the film of thermoplastic for resinous wood or plus in a manner of tackness resin etc. using heating pressuring method Fiber is containing resin pickup and after the cooling period into tool intensity and the plastic composites of smooth surface, however thermoplastic resin melted by heating When, viscosity gets lower than 100.0Pas (1 Pas=without the heated rear viscosity such as the heat cured epoxy of the image of Buddha or vinyl esters 1kg·m^-1·s^-1), it can fully flow in moistening fiber surface between fiber, therefore smooth even if appearance can be obtained Composite material, but internal fiber can not still have good Bonding strength, and heating is not described in detail in above-mentioned Patent Case with resin boundary surface Pressuring method or the equipment used generally generally refer to using the heating pressurization of the hot-platens such as steel plateform or mold.It is although Chinese TW572825 points out the processing of provided composite material applicable sewing, and provides processing method with a greater variety, but in fact because Fiber has no good Bonding strength, therefore the composite material will be split after sewing or after bending complications with resin boundary surface Trace.

To solve the problems, such as that Bonding strength is insufficient between fiber and resin boundary surface, following Patent Case provides various solution party Case：

Chinese T W201037123 provides a kind of plastic composites and its manufacturing method, this method comprise the steps of：Step Rapid 1：Purchase at least two fibrous layers；Step 2：According to the material property of each fibrous layer, a bonding agent is selected and is impregnated with respectively；Step Rapid 3：Arrange such fibrous layer；Step 4：Heating is pressurizeed such fibrous layer, melts the bonding agent heat of an at least fibrous layer, and with phase Adjacent fibrous layer is bonded as a flat-sheet material；Step 5：Cool down the flat-sheet material；Step 6：It is an at least preshaping body to cut the flat-sheet material；Step Rapid 7：Heat and soften the preshaping body；Step 8：It is molded the preshaping body and forms a finished product, which can be the tree of thermosetting or thermoplastic Fat.

The step of above-mentioned one bonding agent of impregnation, should be the major technique of the Patent Case, only in this Patent Case and undeclared be made Technology and equipment.Moreover when aforementioned thermoplastic's fiber composite material is because of thermoplastic resin melted by heating, viscosity is without image of Buddha thermosetting Property epoxy or vinyl esters etc. it is heated after viscosity be lower and can flow between fiber and moisten fiber surface and be fully impregnated with, This impregnation technology is the no chief technology that can obtain high quality thermoplastic fibre composite material, actually useful in volume production The relevant technologies patent such as with specific solvent by specific thermoplastic resin dissolving make viscosity thinning technology as China TW201442852, Chinese T W201442853 and Chinese T W200618730 those disclosed herein, but using dissolution method and do not meet environmental protection It is required that therefore the advanced countries such as America and Europe be all prevented or restricted from using.The technology of another volume production, such as US5, person disclosed by 236,972, It is Chinese T W201416513 and US5 by thermoplastic resin to be ground into superfine powder and be suspended in the impregnated with method of aqueous solution, 618,367 be by thermoplastic resin grinding granulate and powder after, by its even application or be sprayed at fabric surface, Then heating melt and pressurize make fabric be impregnated with thermoplastic resin, however, thermoplastic plastic is ground to can suspend and It can be dispersed in water or have sprayable property, then the granularity of the particle after grinding must be very carefully to nearly nanometer grade, therefore grind Processing method causes cost is opposite to improve, and can not meet the general general cost with level composite material.

Furthermore above-mentioned Patent Case does not refer to that obtained thermoplasticity carbon fibre composite has solid grain surface, It at most refers only to obtain smooth surface, therefore such Patent Case is not provided and how to be kept on thermoplasticity carbon fibre composite The technology on solid grain surface.

In addition, 103252957 A of CN, which disclose a kind of surface, has the carbon fiber skin of solid grain, manufacturing method includes The carbon fiber base material for being impregnated with thermoplastic resin is stacked into layer structure, is then covered in the superficies of the carbon fiber layer structure Lid thermoplastic film is to form composite material, then the composite material is put into the hot pressing die with solid grain and is heated And cooling, that is, obtaining surface has the carbon fiber skin of solid grain.Since the invention of this Patent Case is by carbon fiber base material elder generation After being impregnated with thermoplastic resin, then one layer of thermoplastic film of additional coverage, then multiple steps such as hot pressing, institute are carried out using mold To have the shortcomings that processing procedure is complicated time-consuming.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of structures of soft carbon fibre composite, improve The shortcomings that bad is combined between existing carbon fibre fabric and thermoplastic resin, and solid grain is presented on surface.

In order to achieve the above object, the utility model provides a kind of structure of soft carbon fibre composite, including：

Carbon fibre fabric, the surface with solid grain；And

Thermoplastic resin is fully distributed in the carbon fibre fabric, and is covered in the carbon fibre fabric at least Surface with solid grain, and with solid grain corresponding with the carbon fibre fabric.

Wherein, the thickness of the carbon fibre fabric is about 0.03 to 1mm.

Wherein, the thickness of the carbon fibre fabric is about 0.06 to 0.8mm.

Wherein, the thickness of the carbon fibre fabric is about 0.08 to 0.5mm.

Wherein, the thickness of the carbon fibre fabric is about 0.1 to 0.4mm.

Wherein, the thickness of the structure of the soft carbon fibre composite is about 0.1 to 1mm.

Wherein, the thickness of the structure of the soft carbon fibre composite is about 0.2 to 0.8mm.

Wherein, the thickness of the structure of the soft carbon fibre composite is about 0.3 to 0.6mm.

Wherein, the thermoplastic resin has the hardness of Shore A 50-70.

Solid grain can be presented on surface, more in the structure of soft carbon fibre composite provided by the utility model Have aesthetics, visually more change, and application can be increased.

Description of the drawings

Fig. 1 is the diagrammatic cross-section of the structure of the soft carbon fibre composite of the utility model.

Fig. 2 is the flow chart of the manufacturing method of the structure of the soft carbon fibre composite of the utility model.

Fig. 3 is the schematic device used in the structure of the manufacture soft carbon fibre composite of the utility model.

Fig. 4 is the diagrammatic cross-section of conventional fabrics composite material.

Specific embodiment

Unless in addition Wen Zhongyou illustrates, in the present specification (especially in aftermentioned patent claim), used " One ", "the" and similar term are interpreted as comprising odd number and plural form.In addition, for clarity, each group may be lavished praise on oneself in schema Part and the size in region, and be not painted according to actual ratio.

It should be appreciated that any numberical range cited in this description is intended to comprising all underranges included in it.Example Such as, include from the range of " 160 to 190 DEG C " all between 160 DEG C of the minimum value of statement and 190 DEG C of the greatest measure of statement Underrange (such as from 168 DEG C to 187 DEG C, 163 DEG C to 182 DEG C, 170 DEG C or 188 DEG C) and comprising two numerical value, that is, comprising equal to Or the range of the minimum value more than 160 DEG C and the maximum value equal to or less than 190 DEG C.Because revealed numberical range is to connect Continuous, therefore they include each numerical value between minimum value and maximum value.Unless otherwise noted, it is otherwise indicated in this specification Various numberical ranges be approximate value.

Please refer to Fig. 1, the utility model about a kind of structure of soft carbon fibre composite, including：

Carbon fibre fabric (B), the surface with solid grain are fine by the transverse fiber (B1) and carbon of carbon fibre fabric The longitudinal fiber (B2) of dimensional fabric interweaves and former；And

Thermoplastic resin (A) is fully distributed in the carbon fibre fabric (B), and is covered in the carbon fibre fabric (B) At least there is the surface of solid grain, and with solid grain corresponding with the carbon fibre fabric (B).

Fig. 2 and Fig. 3 is please referred to, illustrates a kind of method for manufacturing the soft carbon fibre composite of the utility model, packet It includes：

Thermoplastic resin (A) is provided, and by it with fuse machine (10) to approach the heat of thermoplastic resin (A) fusing point Melting temperatur heating melting；

Carbon fibre fabric (B) is provided, there is solid grain on an at least surface, it is made to melt applying area (20) through overheat, The thermoplastic resin (A) of the melting is at least coated on by the carbon fibre fabric (B) with the combination of roller (22) and scraper (23) Surface with solid grain；

This is made to be coated with the carbon fibre fabric of thermoplastic resin (A) (B) to toast by baking zone (30), to enable the heat can Plastic resin (A) is penetrated into the carbon fibre fabric (B)；

The carbon fibre fabric (B) is after thermoplastic resin (A) is coated with and permeates and moisten with baking, using comprising at least The heating pressor areas (40) of roller group combined by one rubber roller (41) and another roller (42) is made with heating and pressuring method Thermoplastic resin (A) can be fully distributed in carbon fibre fabric (B), and makes thermoplastic resin surface that solid grain be presented； And

The carbon fibre fabric for being coated with thermoplastic resin (A) (B) is cooled down in cooling zone (50), makes the thermoplasticity tree Fat (A) cures and is combined into one with carbon fibre fabric (B), to obtain the soft carbon fibre composite of tool solid grain (C)。

After the soft carbon fibre composite (C) for obtaining the tool solid grain, post-processing can be optionally carried out again, such as schemed , can be clipped and together with conductive fabric lining sewing shown in 2, and tool three-dimensional touch is made and records the soft of feature with anti-side Fiber product, such as handbag, luggage case and wallet.

In this creation, the thickness of the carbon fibre fabric (B) is about 0.03 to 1mm, preferably approximately 0.06 to 0.8 mm, more Preferably approximately 0.08 to 0.5mm, most preferably about 0.1 to 0.4mm, the carbon fibre fabric (B) is in above-mentioned specific thicknesses Can promote the zygosity being impregnated between effect and resin and fiber, and every meter square of weight in about 30 between 600g, it is excellent Choosing is about 50 between 500g, and more preferably from about 70 between 400g, and most preferably about 90 between 300g, and the carbon is fine The fiber containing ratio of dimensional fabric (B) is between about 20 to 60%, between preferably approximately 25 to 55%, more preferably from about 30 To between 50%.

In this creation, which is soft thermoplastic resin, refers in particular to hardness as Shaw A The soft thermoplastic resin of (Shore A) 50-70, the soft thermoplasticity tree of preferably Shaw A (Shore A) 55-65 Fat, such as polyureas ester resin (Thermoplastic Polyurethane, TPU), ethylene/vinyl acetate copolymer The soft thermoplastic plastic materials such as (Ethylene Vinyl Acetate, EVA), modification polyethylene (PE).

The thickness of soft carbon fibre composite (C) obtained in this creation is about 0.1 to 1mm, preferably approximately 0.2 to 0.8mm, more preferably from about 0.3 to 0.6mm.

Wherein, in the fuse machine (10), the inlet amount of thermoplastic resin (A) particle is controlled according to the amount needed for coating System, makes the thermoplastic resin (A) of melting can keep certain melting time and temperature, long time or excessively high temperature general Resin is caused to crack.In the aspect of the plastic polyureas ester resin (TPU) of modified soft heat for using hardness Shaw A (Shore A) 65 In, melting temperature to be set as about 160 to 190 DEG C be best；When using in the aspect of EVA and PE, melting temperature is set as About 155 to 185 DEG C.

Wherein, which melts scraper (23) and coating roller of the applying area (20) including resin storage tank (21), controllable coating weight (22), required coating weight is can control using the gap of scraper (23) and roller (22), when scraper (23) is coated with, heat can be made plastic Property resin (A) is uniformly coated on carbon fibre fabric (B) surface.

Wherein, the more aforementioned hot melting temperature of temperature of the baking zone (30) is about 5 to 30 DEG C high, preferably high by about 5 to 25 DEG C, it is more preferably about 5 to 20 DEG C high, it is most preferably about 10 to 20 DEG C high.And this is coated with the carbon of thermoplastic resin (A) Fabric (B) need to be controlled in baking zone (30) residence time about 20 to 90 seconds, preferably approximately 25 to 75 seconds, more Preferably approximately 30 to 60 seconds, most preferably about 35 to 50 seconds are increasing thermoplastic resin (A) with the purpose of high-temperature baking Flowing to improve penetration degree of the thermoplastic resin (A) in carbon fibre fabric (B) and moisten carbon fibre fabric (B).

Wherein, which is to utilize the institute such as infrared ray, electric heating or electromagnetic heating into passerby.

Wherein, the roller group in the heating pressor areas (40) provides the processing temperature with the temperature close of resin melting, temperature Between difference is about 5 DEG C to about 30 DEG C, between preferably approximately 10 DEG C to about 25 DEG C, more preferably from about 10 DEG C to about 20 DEG C it Between and about 5 to 30kgf/cm²Pressure, preferably approximately 5 to 25kgf/cm²Pressure, more preferably from about 10 to 20kgf/cm²Pressure so that the thermoplastic resin (A) can in the molten state pressurized flow and make thermoplastic resin (A) interface with carbon fibre fabric (B) can fully be combined.

Wherein, the rubber roller (41) in the heating pressor areas (40) is the steel wheel that surface is covered in rubber, wherein should Rubber surface hardness controls the hardness in Shaw A (Shore A) 60-75, therefore is coated with thermoplastic resin (A) stressing on Carbon fibre fabric (B) surface when, be not to make to be coated with the carbon fibre fabric of thermoplastic resin (A) because of excessive pressure (B) there is the effect of planarization on surface, so can ensure that the soft carbon fibre composite (C) obtained has script carbon fiber The solid grain of fabric (B).

In an embodiment aspect, when a surface of the carbon fibre fabric (B) has solid grain, then the heating pressor areas (40) the roller group in includes a rubber roller (41), and the carbon fibre fabric that pressurizes has the surface of solid grain；Another roller (42) it can be then steel roller.

In another embodiment aspect, when two surfaces of the carbon fibre fabric (B) all have solid grain, then the heating adds Roller group in pressure area (40) may include two rubber rollers (41), and the carbon fibre fabric that pressurizes respectively has two tables of solid grain Face.

In another embodiment aspect, when two surfaces of the carbon fibre fabric (B) all have solid grain, then the heating adds Roller group in pressure area (40) also may include a rubber roller (41) and a steel roller.General plus-pressure is in 20kgf/cm²With When lower, using the resin penetration that the combination of two rubber rollers has had and impregnation effect, and composite material surface is with good Good solid grain effect.But if fabric is that thickness is more than the bottom weight of 0.4mm and moulding pressure requires more than 20kgf/cm² Pressure when can be got well impregnation mass effect when, if using the combination of two rubber rollers, excessive pressure will make Fabric is deformed and the bad problem such as lines is crooked, therefore the roller group that a rubber roller and a steel can be used to draw, to ensure The quality of fabric.If but the processing procedure of roller group drawn using a rubber roller and a steel, the fibre contacted with the steel roller The three-dimensional sense of dimensional fabric can be slightly weak, and uses the combinations of two rubber rollers then two-sided three-dimensional sense is then preferable.

Wherein, which is maintained at about 0 to 20 DEG C of temperature, preferably approximately 5 to 15 DEG C, more preferably from about It 5-10 DEG C, is preferred with the cooling system of cold wind blowing-type；It is about 20 to 60 seconds, preferably approximately 20 to 50 to cool down residence time Second, more preferably 20 to 40 seconds.The length setting of the cooling zone must consider cooling effect.Cooling time is according to processing output Speed and resin types are different and different, and the resident cooling time of 20 to 40 seconds is usually needed at 5-10 DEG C.Cooling effect If fruit deficiency will cause resin surface mutually to be pasted, different resins can when the glass transition point of resin is different difference.

Example：

Example 1

The polyureas ester resin (TPU) of Shaw A (Shore A) 65 is provided and thickness is 0.28mm and every meter square of weight is The carbon fiber twills of 248g, by polyureas ester resin with fuse machine is heated to 180 DEG C and melts, and by it with roller and scraper Combination be coated on the twill surface of the carbon fiber, then via infrared ray 205 DEG C toast 40 seconds so that polyureas ester Resin penetrate into the twill fiber of carbon fiber in, then by comprising hardness be Shaw A (Shore A) 65 rubber roller and The roller group of steel roller is 160 DEG C of heating in temperature and pressure is 16kgf/cm²When pressurize, thermoplastic resin is made fully to divide Cloth makes surface that solid grain be presented in carbon fibre fabric；The carbon fiber twills of polyureas ester resin are finally coated with 7 DEG C cooling, produces linear speed 2m/min, resident 30 seconds of cooling makes polyureas ester resin solidification and is combined into one with carbon fiber twills Body, to obtain the soft carbon fibre composite of tool solid grain, thickness 0.56mm.

Example 2 to 7

Manufacturing method is identical with example 1, and used material, process conditions and result are as shown in table 1 in detail.

The twill transverse fiber of 1 carbon fiber of example (B1) and the longitudinal fiber (B2) of carbon fibre fabric and polyureas ester tree The combination covering property of fat (A) is good and without apparent emptying aperture.

" emptying aperture " is fibrous composite in impregnation and hot pressure process because resin impregnated is bad or resin can not fill Shunting is dynamic, make resin can not complete covered fiber, cause the bubble for thering is residual air to be formed between fiber, the just shape after the curing of multiple material The aperture empty into one, calls emptying aperture.Form bad and containing a large amount of emptying apertures composite materials can make its fiber and resin without Method effectively combines, and for soft multiple material, emptying aperture will cause when follow-up sewing is processed, and fiber is made to be drawn out from resin or table There is crack in face.

Comparative example 1

Using the composite molding product of the method institute processing procedure disclosed by Chinese T W410196 as comparative example.

Comparison result

Apparent solid grain, the line of conventional fabrics composite material is presented in the surface of the soft carbon fibre composite of this creation Road is not obvious, and compared to for this creation, plane sense is presented in the surface of conventional fabrics composite material.

It can be appreciated that in conventional fabrics composite material by Fig. 4, the resin (A') covered can not be along carbon fibre fabric The solid grain of the longitudinal fiber (B2') of transverse fiber (B1') and carbon fibre fabric generates corresponding solid grain, but makes The surface of the conventional fabrics composite material is into planar.And it then can be seen that this creation carbon fibre fabric surface is covered by Fig. 1 The thermoplastic resin (A) of lid can be along the transverse fiber (B1) of carbon fibre fabric and the longitudinal fiber (B2) of carbon fibre fabric Solid grain and generate corresponding solid grain.Therefore the soft carbon fiber composite generated using the method that this case is provided Solid grain can be presented on surface in material.

Example 8

It may be post processed by the soft carbon fibre composite that example 1 to 7 is obtained, with conductive fabric lining sewing Together, the products such as handbag, luggage case and wallet are made.The more general ox-hide of following table 2, existing glass are silver-plated, this case The soft carbon that conductive fabric (mylar electroplating surface copper) that applicant is provided in Chinese T W1325907, example 1 are obtained Fibrous composite and the soft carbon fibre composite sewing for being obtained above-mentioned conductive fabric with example 1 (as lining) EMI shieldings afterwards.As shown in Table 2：The soft carbon fibre composite of this creation has had quite good EMI shieldings, and If the soft carbon fibre composite of this creation is combined with conductive fabric, it can more increase the shield effectiveness of former conductive fabric, Therefore electronics side can be effectively prevent to record.

Above-described embodiment is only the principles and effects that this creation is illustrated, and illustrates the technical characteristic of this creation, Rather than used in the protection category for limiting this creation.It is any to be familiar with this technology person in the technical principle and spirit without prejudice to this creation Under, can unlabored change or arrangement, belong to the range that this creation is advocated.Therefore, the rights protection scope of this creation is such as Listed by appended claims.

Claims (9)

1. a kind of structure of soft carbon fibre composite, it is characterised in that the structure includes：

Carbon fibre fabric, the surface with solid grain；And

Thermoplastic resin is fully distributed in the carbon fibre fabric, and is covered in the carbon fibre fabric and at least has The surface of solid grain, and with solid grain corresponding with the carbon fibre fabric.

2. the structure of soft carbon fibre composite as described in claim 1, it is characterised in that the thickness of the carbon fibre fabric Degree is about 0.03 to 1mm.

3. the structure of soft carbon fibre composite as claimed in claim 2, it is characterised in that the thickness of the carbon fibre fabric Degree is about 0.06 to 0.8mm.

4. the structure of soft carbon fibre composite as claimed in claim 2, it is characterised in that the thickness of the carbon fibre fabric Degree is about 0.08 to 0.5mm.

5. the structure of soft carbon fibre composite as claimed in claim 2, it is characterised in that the thickness of the carbon fibre fabric Degree is about 0.1 to 0.4mm.

6. the structure of the soft carbon fibre composite as described in any one of claim 1 to 5, it is characterised in that described soft The thickness of the structure of carbon fibre composite is about 0.1 to 1mm.

7. the structure of the soft carbon fibre composite as described in any one of claim 1 to 5, it is characterised in that described soft The thickness of the structure of carbon fibre composite is about 0.2 to 0.8mm.

8. the structure of the soft carbon fibre composite as described in any one of claim 1 to 5, it is characterised in that described soft The thickness of the structure of carbon fibre composite is about 0.3 to 0.6mm.

9. the structure of the soft carbon fibre composite as described in any one of claim 1 to 5, it is characterised in that the heat can Plastic resin has the hardness of Shore A 50-70.