CN112197000A - Carbon fiber end-capped product and end-capping method - Google Patents
Carbon fiber end-capped product and end-capping method Download PDFInfo
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- CN112197000A CN112197000A CN202011149023.0A CN202011149023A CN112197000A CN 112197000 A CN112197000 A CN 112197000A CN 202011149023 A CN202011149023 A CN 202011149023A CN 112197000 A CN112197000 A CN 112197000A
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- Prior art keywords
- carbon fiber
- pipe body
- accessory
- capped
- fiber pipe
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 182
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 182
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 182
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 102
- 239000000853 adhesive Substances 0.000 claims abstract description 74
- 230000001070 adhesive effect Effects 0.000 claims abstract description 74
- 239000000047 product Substances 0.000 claims description 106
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000011265 semifinished product Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract 3
- 239000003822 epoxy resin Substances 0.000 description 12
- 229920000647 polyepoxide Polymers 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 7
- 238000012797 qualification Methods 0.000 description 6
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- RKBCYCFRFCNLTO-UHFFFAOYSA-N triisopropylamine Chemical compound CC(C)N(C(C)C)C(C)C RKBCYCFRFCNLTO-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 150000002169 ethanolamines Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003512 tertiary amines Chemical group 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
Abstract
The invention provides a carbon fiber end-capped product and an end-capping method, wherein the end-capped product comprises a carbon fiber pipe body, an end-capping accessory and a fixing accessory, the cross sections of the carbon fiber pipe body and the end-capping accessory are the same in shape, the end-capping accessory is of a T-shaped structure, one end, with a smaller cross section area, of the end-capping accessory is inserted into the carbon fiber pipe body, and the other end, with a larger cross section area, of the end-capping accessory is clamped; all be equipped with the trompil on the side of carbon fiber body and terminating accessory, the position coincidence of both trompils, fixed accessory passes the trompil and fixes both. According to the invention, the carbon fiber pipe body is blocked by adopting the blocking fittings, so that the adhesive is uniformly distributed on the contact surface, the good air tightness of the blocked product is ensured, and the relative positions of the carbon fiber pipe body and the blocking fitting are further fixed by adopting the fixing fittings, so that the blocking assembly is prevented from falling off due to overlarge internal and external pressure difference; the end-sealing method is simple to operate, the qualified rate of finished products is high, the cost is indirectly reduced, and the use conditions of the terminal can be better met.
Description
Technical Field
The invention belongs to the technical field of product sealing, and relates to a carbon fiber end-capped product and an end-capping method.
Background
As an important inorganic fiber material, the carbon fiber has excellent mechanical properties, and also has various excellent properties, such as high temperature resistance, chemical corrosion resistance, low resistance, high thermal conductivity, low thermal expansion and the like, and also has the soft processability of textile fiber, so that the carbon fiber becomes an indispensable reinforced fiber material at present, and has wide application prospects in the fields of energy, buildings, materials and the like.
The carbon fiber pipe body is an important carbon fiber product, and is often assembled with accessories to be subjected to end-sealing treatment in the using process so as to be assembled into a finished product; in the prior art, a sealing end assembly is usually directly adhered to a port of a pipe body through an adhesive, and sealing end is finished after the adhesive is cured, but because the pipe body is of a hollow structure, the requirement on internal air tightness is high based on the use requirement, the existing sealing end method generally causes the falling of accessories due to the internal and external pressure difference in use, or internal water inflow is caused due to poor air tightness, and the contact product with the accessories is influenced after overflowing, so that in the assembly process of finished products, the stable adhesion of the accessories needs to be ensured, the tight combination of the connection parts is ensured, no gap is left, and the preparation of the high-quality carbon fiber finished products is finished.
CN 207583763U discloses an assembly structure of a connecting piece and a carbon fiber pipe body, which comprises a main body, wherein one end of the main body is provided with a connecting support which is connected with the main body in a split manner, the connecting support comprises a first connecting bulge which can extend into the inner wall of the main body, and a first mounting limiting step is formed at the joint of the first connecting bulge and the connecting support; the bellied surface of first connection is equipped with and makes things convenient for it to insert the groove of stepping down is pegged graft to the first of main part inner wall, first grafting step down the groove with the main part inner wall connection back enables the protruding location of first connection in the main part inner wall is difficult for squinting. This assembly structure improves mounting structure's stability through the structural design who connects the support, but its leakproofness can't guarantee, and connects the support structure complicacy, and application scope is narrower.
CN 211116981U discloses a carbon fiber tube, which comprises a tube body, a first splicing end, a second positioning hole, a flow guide end, a first sealing ring, a second splicing end, a connecting slot, a first positioning hole, a positioning stud and a second sealing ring, wherein the first splicing end is fixedly installed at one end of the tube body, the flow guide end is installed at the inner end face of the first splicing end in a connected mode and is communicated with the interior of the tube body, the first sealing ring is installed on the outer wall of the flow guide end in a sleeved mode and is attached to the inner wall of the first splicing end, the second positioning hole is formed in the center of the end face of the outer wall of the first splicing end, and the second splicing end is fixedly installed at the other end of the tube body; a connecting slot is formed in the second inserting end, a second sealing ring is fixedly mounted on one side end face of the connecting slot, a first positioning hole is formed in the center of the outer wall end face of the second inserting end, and a positioning stud is mounted in the first positioning hole through threaded connection. The structural design at the two ends of the carbon fiber pipe is to connect a plurality of carbon fiber pipes in sequence, and the sealing ring is arranged only to avoid the leakage of fluid at the joint instead of carrying out end sealing treatment.
In summary, for the end-sealing treatment of the carbon fiber tube, the existing process needs to be improved, so that the problems that the fittings are easy to fall off and the air tightness is poor during use can be avoided, and the qualification rate of the finished product is improved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a carbon fiber end-capped product and an end-capping method, wherein the product adopts an end-capping accessory to cap a carbon fiber pipe body, an adhesive is uniformly distributed on a contact surface through operation in the end-capping process, the good air tightness and air tightness of the end-capped product are ensured, the relative positions of the end-capped product and the carbon fiber pipe body are further fixed by adopting a fixing accessory, the falling of an end-capping component caused by overlarge internal and external pressure difference is avoided, the finished product qualification rate of the end-capped product is improved, and the product cost is reduced.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the invention provides a carbon fiber end-capped product, which comprises a carbon fiber pipe body, an end-capped accessory and a fixed accessory, wherein the cross sections of the carbon fiber pipe body and the end-capped accessory are the same in shape, the end-capped accessory is of a T-shaped structure, one end, with a smaller cross section area, of the end-capped accessory is inserted into one end of the carbon fiber pipe body, the side surface of the end-capped accessory is in contact with the inner wall surface of the carbon fiber pipe body, and one end, with a larger cross section area, of;
the side near the port of the carbon fiber pipe body and the side at the end with the smaller cross section area of the end-sealing accessory are both provided with openings, the positions of the openings of the carbon fiber pipe body and the end-sealing accessory are overlapped, and the fixing accessory penetrates through the openings to fix the carbon fiber pipe body and the end-sealing accessory.
According to the invention, the structure of the carbon fiber end-capped product mainly comprises three parts, wherein the main part is a carbon fiber pipe body, one end of the carbon fiber pipe body is subjected to end capping treatment according to the requirements of the use environment, end-capped accessories are selected according to the structure of the carbon fiber pipe body, and the T-shaped structure of the end-capped accessory can increase the contact area with the inner wall of the carbon fiber pipe body, so that sealing can be better performed, and the air tightness of the end-capped product is improved; establish the hole through on the suitable position at carbon fiber body and end-capping accessory, make the position coincidence in both equipment back holes, rethread fixed fittings passes the hole and carries out physics better with both fixed, produces falling of end-capping accessory because of the internal and external pressure differential of temperature variation when avoiding using for the quality of product obtains controlling, and the finished product qualification rate improves, indirectly reduces product cost, satisfies the end service condition better.
The following technical solutions are preferred technical solutions of the present invention, but not limited to the technical solutions provided by the present invention, and technical objects and advantageous effects of the present invention can be better achieved and achieved by the following technical solutions.
As a preferred embodiment of the present invention, the carbon fiber pipe body includes a square pipe or a circular pipe, and is preferably a square pipe.
Preferably, the carbon fiber pipe body comprises a same diameter pipe or a tapered pipe body.
In the invention, the type of the carbon fiber tube body is adjusted according to the use requirement, for example, when the carbon fiber tube body is used as an automatic carrying support, the length of the used carbon fiber tube body is usually longer and can reach 3-4 m, the cross section shape of the carbon fiber tube body is usually square or round, and the square tube body, especially the rectangular cross section shape, is preferably selected in the invention; when the carbon fiber tube body is tapered, the selection of the corresponding end-sealing fitting is determined by the size of the port to be sealed.
As a preferable technical scheme of the invention, the end-sealing fitting is of a hollow structure, and the end face of the end-sealing fitting with a smaller cross section area is opened.
Preferably, the end face of the end fitting with the larger cross-sectional area has the same size as the end opening of the carbon fibre tube body.
Preferably, the material of the end-sealing fitting comprises plastic.
In the invention, the T-shaped structure of the end-sealing accessory, namely the 1/2 shape of the I-shaped structure, the thickness of the bottom end, namely the end with larger cross section area, is smaller, and the clamping and fixing function is mainly realized, and the protruding part of the I-shaped head, namely the end with smaller cross section area, can be arranged into a hollow structure, so that the side surface can be conveniently opened with holes, and the weight of the end-sealing component can be reduced.
The end fitting may be made from a mould, the end of smaller cross-sectional area being slightly smaller than the dimensions of the pipe body to enable it to be inserted into the pipe body but not so small that it can contact the sides and be secured by adhesive.
In the invention, the material of the end-capped fitting is generally plastic, which is similar to the adhesive component and is convenient to fix, meanwhile, the plastic component has strong corrosion resistance and other performances, is suitable for various environments, and has light weight, for example, ABS plastic, polypropylene, polyformaldehyde, polyether ether ketone and the like can be selected, and the ABS plastic is preferably selected by comprehensively considering the factors of high temperature resistance, fitting weight, fitting cost and the like.
As a preferable technical solution of the present invention, the hole in the carbon fiber pipe body is formed in the machined surface.
In the invention, when the carbon fiber tube is a square tube, the machined surface is generally the ceiling surface of the product, is a horizontal plane, is opposite to the ground surface, is generally a non-horizontal inclined surface, and the other two surfaces are called side surfaces; when the carbon fiber tube is a round tube, the machined surface does not need to be limited.
Preferably, the hole in the end-capping fitting is provided in a side surface that is in abutment with the machined surface of the carbon fibre tube body.
Preferably, the carbon fiber pipe body and the end-capping fitting are provided with at least one hole, and preferably two holes.
Preferably, the carbon fiber pipe body and the end-capping fitting are provided with holes having the same size.
In the invention, when the end-sealed product is assembled, the carbon fiber pipe body is arranged on a working table surface, a square pipe is usually selected for the convenience of operation, the machining surface is upward, and the relative positions of the carbon fiber pipe body and the holes on the end-sealed accessory are convenient to observe; in order to enhance the fixing effect, more than one opening can be arranged, and two openings are usually symmetrically arranged according to the size of the pipe body, so that the stability is improved.
As a preferable technical scheme, the fixing fittings are of umbrella cap structures, and the cross section size of an umbrella handle in the umbrella cap structures is the same as the size of the openings in the carbon fiber pipe body and the end sealing fittings.
In the present invention, the fitting is a "thumbtack" like structure, which is essentially a product design fitting for connecting carbon fiber tubes to a carrier, and the top two of which can just serve as the fitting in the present invention.
Preferably, the umbrella handle in the umbrella cap structure passes through the opening until the umbrella cap is attached to the side surface of the carbon fiber pipe body.
Preferably, the material of the fixing fittings comprises any one or a combination of at least two of polypropylene, polyformaldehyde and polyether ether ketone, and the material is selected according to the main requirement to have the characteristics of smoothness, wear resistance, toughness, high temperature resistance and deformation resistance.
In the invention, the fixing fitting integrally passes through the open hole to fix the relative positions of the carbon fiber pipe body and the end sealing fitting, so that the physical separation effect is further realized on the basis of the fixing effect of the adhesive, the end sealing assembly is prevented from falling off easily after long-time use, and in order to enhance the fixing effect of the fixing fitting, the fixing fitting is usually coated with the adhesive and then inserted into the open hole, so that the problem that the fixing fitting is easy to fall off is avoided.
In another aspect, the present invention provides a method for end-capping the carbon fiber end-capped product, where the end-capping method includes the following steps:
(1) after holes are formed at corresponding positions of the carbon fiber pipe body and the end-sealing accessory, coating an adhesive on the inner wall surface of the sealing end of the carbon fiber pipe body and the side surface of the end with the smaller cross section area of the end-sealing accessory;
(2) inserting the end-sealing accessory coated with the adhesive into the sealing end of the carbon fiber pipe body until the end with the larger cross-sectional area of the end-sealing accessory is contacted with the port of the carbon fiber pipe body, and wiping the redundant adhesive until no adhesive flows out;
(3) inverting the sealing end of the carbon fiber tube body in the product assembled in the step (2) downwards until the adhesive does not flow out any more, and then flatly placing and standing the product until the adhesive is completely cured to obtain a carbon fiber end-capped semi-finished product;
(4) and (4) inserting a fixed accessory into the side opening on the carbon fiber end-capped semi-finished product obtained in the step (3), and further fixing the carbon fiber pipe body and the end-capped accessory to obtain the carbon fiber end-capped product.
As a preferable technical scheme of the invention, the positions of the holes on the carbon fiber pipe body and the end sealing fitting in the step (1) are the same as the positions of the holes after the carbon fiber pipe body and the end sealing fitting are assembled.
Preferably, the adhesive of step (1) is composed of a main agent and a hardening agent.
In the present invention, the adhesive includes epoxy resins, phenolic resins, etc., wherein the main component is epoxy resin, phenolic resin, etc., and the hardening agent is a tertiary amine, such as trimethylamine, tripropylamine, triisopropylamine, tri-n-butylamine, triethanolamine, tetramethylethylenediamine, ethanolamine derivative, etc., which is mainly selected.
Preferably, the mass ratio of the main agent to the curing agent is (1-3): 1, for example, 1:1, 1.5:1, 2:1, 2.5:1 or 3:1, but not limited to the recited values, and other values not recited within the range of the values are also applicable.
As a preferable technical scheme of the invention, when the end-capping fitting in the step (2) is inserted, the side surface of the end-capping fitting with the open pore is opposite to the surface with the open pore on the carbon fiber pipe body.
Preferably, after insertion of the end-capped fitting, the adhesive is wiped a plurality of times until no adhesive flows out after standing for 1 to 10min, for example, 1min, 1.5min, 2min, 3min, 5min, 8min, or 10min, but not limited to the values recited, and other values not recited in the range of values are also applicable.
In the invention, after the end-sealing accessory is inserted, the adhesive can flow out, the adhesive is wiped for multiple times by adopting a cleaning cloth, and the next operation can be carried out after the adhesive is kept standing for a short time without flowing out.
As a preferable technical scheme of the invention, the assembled product in the step (3) is placed upside down on a clamp bracket.
According to the invention, after the end-sealing accessory is assembled, the adhesive has certain fluidity before curing, the adhesive at the edge is easy to flow out, the adhesive distribution of the contact part of the end opening close to the end opening and the end with the larger cross-sectional area of the end-sealing component is often uneven, and a gap is left after the adhesive is cured, so that the assembled product is placed upside down, the adhesive can flow reversely, the sealing part is fully soaked and uniformly distributed, the product is placed still until the primary curing is carried out, the adhesive does not flow any more, and the product can be placed flatly for the subsequent curing and bonding process.
Preferably, the fixture support is provided with a planar plate for horizontally placing the sealing end of the assembled product and at least two groups of fixing pipes positioned above the planar plate, and each group of fixing pipes comprises two fixing pipes arranged in parallel.
Preferably, the distance between the two fixed tubes in each group of fixed tubes is the same.
Preferably, the sets of fixed tubes are disposed on the same vertical plane.
In the invention, when the carbon fiber pipe body is longer, and the other end of the carbon fiber pipe body always bears a larger load, so that the inversion is difficult to maintain, a specific clamp bracket is arranged, a plurality of groups of fixed pipes with fixed intervals are arranged and positioned on the same vertical plane, and the inclination or bending of the carbon fiber pipe is avoided; in addition, but still set up mobile mounting, avoided the carbon fiber body overlength, need operating personnel to go up and down to carry out the loaded down with trivial details operation that the body stands upside down, the reciprocating of equipment product is driven to the mobility of usable mounting.
In a preferred embodiment of the present invention, the inversion time of the assembled product in step (3) is 30-45 min, such as 30min, 32min, 35min, 38min, 40min, 42min or 45min, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
Preferably, the assembled product in step (3) is kept flat for 20-30 h, such as 20h, 22h, 24h, 25h, 27h, 28h or 30h, but not limited to the recited values, and other values in the range are also applicable.
Preferably, the cross-sectional dimension of the insertion portion of the fixing fitting of step (4) is the same as the size of the opening.
Preferably, before the insertion of the fixing part in the step (4), the surface of the insertion part is coated with an adhesive.
In the present invention, if the fixing member is directly inserted into the hole, it is inferior in stability and easily comes off, so that the surface thereof is coated with the adhesive before being inserted into the hole, and it has strong connection stability after being cured in the hole.
Compared with the prior art, the invention has the following beneficial effects:
(1) the end-capped product adopts the end-capped fittings to cap the carbon fiber pipe body, and the adhesive is uniformly distributed on the contact surface through the operation in the end-capped process, so that the end-capped product is ensured to have good air tightness and no air leakage;
(2) according to the invention, the carbon fiber pipe body and the end-sealing accessory are provided with the holes, and the relative positions of the carbon fiber pipe body and the end-sealing accessory are further fixed by adopting the fixing accessory, so that the end-sealing component is prevented from falling off due to overlarge internal and external pressure difference, and the quality of a product is controlled;
(3) the end-capping method disclosed by the invention is simple to operate, the product quality is high, the qualification rate of finished products can reach more than 99.9%, the cost is indirectly reduced, and the end-use conditions can be better met.
Detailed Description
In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. However, the following examples are only simple examples of the present invention and do not represent or limit the scope of the present invention, which is defined by the claims.
The following are typical but non-limiting examples of the invention:
example 1:
the embodiment provides a carbon fiber end-capped product, which comprises a carbon fiber pipe body, an end-capped accessory and a fixed accessory, wherein the cross sections of the carbon fiber pipe body and the end-capped accessory are the same in shape, the end-capped accessory is of a T-shaped structure, one end, with a smaller cross section area, of the end-capped accessory is inserted into one end of the carbon fiber pipe body, the side face of the end-capped accessory is in contact with the inner wall surface of the carbon fiber pipe body, and one end, with a larger cross section area, of the;
the side near the port of the carbon fiber pipe body and the side at the end with the smaller cross section area of the end-sealing accessory are both provided with openings, the positions of the openings of the carbon fiber pipe body and the end-sealing accessory are overlapped, and the fixing accessory penetrates through the openings to fix the carbon fiber pipe body and the end-sealing accessory.
The carbon fiber pipe body is a square pipe with the same diameter, and the cross section of the carbon fiber pipe body is rectangular.
The end sealing fitting is of a hollow structure, and the end face of the end sealing fitting with the smaller cross section area is opened.
The end face size of the end with the larger cross-sectional area of the end-sealing accessory is the same as the size of the port of the carbon fiber pipe body.
The end-sealing accessory is made of ABS plastic.
The hole on the carbon fiber pipe body is arranged on the machining surface, and the hole on the end-sealing accessory is arranged on the side surface attached to the machining surface of the carbon fiber pipe body.
The carbon fiber pipe body and the end-sealing accessory are provided with two holes which are distributed in bilateral symmetry.
The carbon fiber pipe body and the end-sealing accessory are provided with holes with the same size.
The fixed accessory is the umbrella hat structure, the cross section size of the umbrella stick in the umbrella hat structure with the trompil size is the same on carbon fiber body and the end-capping accessory, the umbrella stick in the umbrella hat structure passes trompil to the umbrella hat laminating on the side of carbon fiber body.
The fixing fittings are made of polyether-ether-ketone.
Example 2:
the embodiment provides a carbon fiber end-capped product, which comprises a carbon fiber pipe body, an end-capped accessory and a fixed accessory, wherein the cross sections of the carbon fiber pipe body and the end-capped accessory are the same in shape, the end-capped accessory is of a T-shaped structure, one end, with a smaller cross section area, of the end-capped accessory is inserted into one end of the carbon fiber pipe body, the side face of the end-capped accessory is in contact with the inner wall surface of the carbon fiber pipe body, and one end, with a larger cross section area, of the;
the side near the port of the carbon fiber pipe body and the side at the end with the smaller cross section area of the end-sealing accessory are both provided with openings, the positions of the openings of the carbon fiber pipe body and the end-sealing accessory are overlapped, and the fixing accessory penetrates through the openings to fix the carbon fiber pipe body and the end-sealing accessory.
The carbon fiber pipe body is a circular pipe with the same diameter.
The end sealing fitting is of a hollow structure, and the end face of the end sealing fitting with the smaller cross section area is opened.
The end face size of the end with the larger cross-sectional area of the end-sealing accessory is the same as the size of the port of the carbon fiber pipe body.
The end sealing accessory is made of polypropylene plastic.
The carbon fiber pipe body and the end-sealing accessory are provided with three holes which are uniformly distributed along the ring shape.
The carbon fiber pipe body and the end-sealing accessory are provided with holes with the same size.
The fixed accessory is the umbrella hat structure, the cross section size of the umbrella stick in the umbrella hat structure with the trompil size is the same on carbon fiber body and the end-capping accessory, the umbrella stick in the umbrella hat structure passes trompil to the umbrella hat laminating on the side of carbon fiber body.
The fixing fittings are made of polyformaldehyde plastics.
Example 3:
the embodiment provides an end capping method of a carbon fiber end capped product, wherein the end capped product adopts the product in the embodiment 1, and the end capping method comprises the following steps:
(1) after holes are formed in corresponding positions of the carbon fiber pipe body and the end-sealing accessory, the positions of the holes are overlapped after the carbon fiber pipe body and the end-sealing accessory are assembled, an adhesive is coated on the inner wall surface of the sealing end of the carbon fiber pipe body and the side surface of the end with the smaller cross section area of the end-sealing accessory, the adhesive is an epoxy resin adhesive EP331, the composition of the epoxy resin adhesive comprises a main agent epoxy resin and a hardening agent trimethylamine, and the mass ratio of the epoxy resin to the hardening agent trimethylamine is;
(2) inserting the end-sealing accessory coated with the adhesive into the sealing end of the carbon fiber pipe body, wherein the side face of the end-sealing accessory with the opening is opposite to the side face with the opening on the carbon fiber pipe body, until the end with the larger cross-sectional area of the end-sealing accessory is contacted with the port of the carbon fiber pipe body, wiping the redundant adhesive, and standing for 2min until no adhesive flows out;
(3) placing the sealed end of the carbon fiber tube body in the product assembled in the step (2) on a fixture support in an inverted manner, wherein the fixture support is provided with a planar plate for horizontally placing the sealed end of the assembled product and two groups of fixed tubes positioned above the planar plate, each group of fixed tubes comprises two fixed tubes arranged in parallel, the two groups of fixed tubes are arranged on the same vertical plane, and the two fixed tubes in each group are arranged on the same horizontal plane; inverting for 36min until the adhesive does not flow out, and then flatly placing and standing the product for 24h until the adhesive is completely cured to obtain a carbon fiber end-capped semi-finished product;
(4) and (4) coating an adhesive on the inserted part of the fixed fitting, inserting the fixed fitting into the side opening on the carbon fiber end-capped semi-finished product obtained in the step (3), and further fixing the carbon fiber pipe body and the end-capped fitting to obtain the carbon fiber end-capped product.
In the embodiment, the carbon fiber pipe is capped by the method, so that the obtained product is good in air tightness, the fittings and the carbon fiber pipe body are good in combination, the product is high in stability, the capped fittings are not prone to falling off, and the qualified rate of finished products reaches 99.95% during capping.
Example 4:
the embodiment provides an end capping method of a carbon fiber end capped product, wherein the end capped product adopts the product in the embodiment 1, and the end capping method comprises the following steps:
(1) after holes are formed in corresponding positions of the carbon fiber pipe body and the end-capping accessory, the positions of the holes are overlapped after the carbon fiber pipe body and the end-capping accessory are assembled, an adhesive is coated on the inner wall surface of the sealing end of the carbon fiber pipe body and the side surface of the end, with the smaller cross-sectional area, of the end-capping accessory, the adhesive is an epoxy resin adhesive EP331, the composition of the epoxy resin adhesive EP331 comprises a main agent epoxy resin and a hardener triisopropylamine, and the mass ratio of the epoxy resin;
(2) inserting the end-sealing accessory coated with the adhesive into the sealing end of the carbon fiber pipe body, wherein the side face of the end-sealing accessory with the opening is opposite to the side face with the opening on the carbon fiber pipe body, until the end with the larger cross-sectional area of the end-sealing accessory is contacted with the port of the carbon fiber pipe body, wiping the redundant adhesive, and standing for 5min until no adhesive flows out;
(3) placing the sealed end of the carbon fiber tube body in the product assembled in the step (2) on a fixture support in an inverted manner, wherein the fixture support is provided with a planar plate for horizontally placing the sealed end of the assembled product and three groups of fixed tubes positioned above the planar plate, each group of fixed tubes comprises two fixed tubes arranged in parallel, the three groups of fixed tubes are arranged on the same vertical plane, and the two fixed tubes in each group are arranged on the same horizontal plane; inverting for 45min until the adhesive does not flow out, and then flatly placing and standing the product for 20h until the adhesive is completely cured to obtain a carbon fiber end-capped semi-finished product;
(4) and (4) coating an adhesive on the inserted part of the fixed fitting, inserting the fixed fitting into the side opening on the carbon fiber end-capped semi-finished product obtained in the step (3), and further fixing the carbon fiber pipe body and the end-capped fitting to obtain the carbon fiber end-capped product.
In the embodiment, the carbon fiber pipe is capped by the method, so that the obtained product is good in air tightness, the fittings and the carbon fiber pipe body are good in combination, the product is high in stability, the capped fittings are not prone to falling off, and the qualified rate of finished products reaches 99.98% during capping.
Example 5:
the embodiment provides a method for end capping a carbon fiber end capped product, wherein the end capped product adopts the product in the embodiment 2, and the end capping method comprises the following steps:
(1) after holes are formed in corresponding positions of the carbon fiber pipe body and the end-sealing accessory, the positions of the holes are overlapped after the carbon fiber pipe body and the end-sealing accessory are assembled, an adhesive is coated on the inner wall surface of the sealing end of the carbon fiber pipe body and the side surface of the end with the smaller cross section area of the end-sealing accessory, the adhesive is an epoxy resin adhesive, the composition of the epoxy resin adhesive comprises a main agent AV138 and a hardening agent HV998, and the mass ratio of the main agent AV138 to the hardening;
(2) inserting the end-sealing accessory coated with the adhesive into the sealing end of the carbon fiber pipe body, enabling the side face of the end-sealing accessory to be overlapped with the opening on the carbon fiber pipe body until the end with the larger cross-sectional area of the end-sealing accessory is contacted with the port of the carbon fiber pipe body, wiping redundant adhesive, and standing for 10min until no adhesive flows out;
(3) placing the sealed end of the carbon fiber tube body in the product assembled in the step (2) on a fixture support in an inverted manner, wherein the fixture support is provided with a planar plate for horizontally placing the sealed end of the assembled product and three groups of fixed tubes positioned above the planar plate, each group of fixed tubes comprises two fixed tubes arranged in parallel, the three groups of fixed tubes are arranged on the same vertical plane, and the two fixed tubes in each group are arranged on the same horizontal plane; inverting for 30min until the adhesive does not flow out, and then flatly placing and standing the product for 30h until the adhesive is completely cured to obtain a carbon fiber end-capped semi-finished product;
(4) and (4) coating an adhesive on the inserted part of the fixed fitting, inserting the fixed fitting into the side opening on the carbon fiber end-capped semi-finished product obtained in the step (3), and further fixing the carbon fiber pipe body and the end-capped fitting to obtain the carbon fiber end-capped product.
In the embodiment, the carbon fiber pipe is capped by the method, so that the obtained product is good in air tightness, the fittings and the carbon fiber pipe body are good in combination, the product is high in stability, the capped fittings are not prone to falling off, and the qualified rate of finished products reaches 99.92% during capping.
Comparative example 1:
this comparative example provides a carbon fiber end-capped product whose structure is comparable to that of example 1, except that: the end-capped product does not include a securing fitting, and no holes are formed in the carbon fiber tube body and the end-capped fitting.
In the comparative example, the end-capped product is only capped by the end-capped accessory through the action of the adhesive, the fixed accessory is not arranged for physical separation, and when the product is used, the air pressure difference is generated inside and outside the product due to the temperature change, the end-capped accessory is easy to fall off and fly out under pressure, and the service life of the product is influenced.
Comparative example 2:
this comparative example provides a method of end-capping a carbon fiber end-capped product, which is comparable to the method of example 3, except that: not comprising the inversion operation in the step (3), and directly laying and standing.
In the comparative example, because the assembled product is not inverted after the end-capping fitting is bonded, the adhesive at the end opening of the pipe body, which is in contact with the end with the larger cross-sectional area of the end-capping assembly, is easily unevenly distributed, the adhesive is in direct contact with the outside, a gap may be left after the adhesive is cured, the air tightness of the product is poor, and the qualification rate of the end-capping product is only about 96%.
It can be seen from the above examples and comparative examples that the end-capped product of the present invention employs an end-capping fitting to cap the carbon fiber tube, and the adhesive is uniformly distributed on the contact surface by the operation during the end-capping process, thereby ensuring good air tightness and no air leakage of the end-capped product; the carbon fiber pipe body and the end-sealing accessory are provided with holes, and the relative positions of the carbon fiber pipe body and the end-sealing accessory are further fixed by adopting the fixing accessory, so that the end-sealing component is prevented from falling off due to overlarge internal and external pressure difference, and the quality of a product is controlled; the end-capping method is simple to operate, high in product quality, high in finished product qualification rate up to more than 99.9%, indirectly low in cost and capable of better meeting terminal use conditions.
The applicant states that the present invention is illustrated by the above examples to show the detailed products and methods of the present invention, but the present invention is not limited to the above detailed products and methods, i.e. it is not meant to imply that the present invention must rely on the above detailed products and methods for implementation. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions for the product of the present invention, and the addition of auxiliary structures, selection of specific modes, etc., are within the scope of the protection and disclosure of the present invention.
Claims (10)
1. A carbon fiber end-capped product is characterized by comprising a carbon fiber pipe body, an end-capped accessory and a fixing accessory, wherein the cross sections of the carbon fiber pipe body and the end-capped accessory are the same in shape, the end-capped accessory is of a T-shaped structure, one end, with a smaller cross section area, of the end-capped accessory is inserted into one end of the carbon fiber pipe body, the side face of the end-capped accessory is in contact with the inner wall face of the carbon fiber pipe body, and one end, with a larger cross section area, of the end-capped;
the side near the port of the carbon fiber pipe body and the side at the end with the smaller cross section area of the end-sealing accessory are both provided with openings, the positions of the openings of the carbon fiber pipe body and the end-sealing accessory are overlapped, and the fixing accessory penetrates through the openings to fix the carbon fiber pipe body and the end-sealing accessory.
2. End-capped product according to claim 1, wherein the carbon fiber pipe body comprises a square or round pipe, preferably a square pipe;
preferably, the carbon fiber pipe body comprises a same diameter pipe or a tapered pipe body.
3. The end-capped product of claim 1 or 2, wherein the end-capped fitting is a hollow structure, and the end face of the end-capped fitting at the end with the smaller cross-sectional area is open;
preferably, the end face of the end with larger cross-sectional area of the end-sealing fitting has the same size as the port of the carbon fiber pipe body;
preferably, the material of the end-sealing fitting comprises plastic.
4. End-capped product according to any one of claims 1 to 3, wherein the holes in the carbon fibre tube body are provided in a machined surface;
preferably, the hole on the end-capping fitting is formed on a side surface attached to the machined surface of the carbon fiber pipe body;
preferably, the carbon fiber pipe body and the end-sealing fitting are provided with at least one hole, preferably two holes;
preferably, the carbon fiber pipe body and the end-capping fitting are provided with holes having the same size.
5. End-capped product of any one of claims 1-4, wherein the fittings are in the form of umbrella cap structures having a stem with a cross-sectional dimension that is the same as the dimensions of the openings in the carbon fiber tube and the end-cap fittings;
preferably, the umbrella handle in the umbrella cap structure passes through the opening until the umbrella cap is attached to the side surface of the carbon fiber pipe body;
preferably, the material of the fixing fittings comprises any one or a combination of at least two of polypropylene, polyformaldehyde or polyetheretherketone.
6. End-capping process of carbon fiber end-capped products according to any of claims 1 to 5, characterized in that it comprises the following steps:
(1) after holes are formed at corresponding positions of the carbon fiber pipe body and the end-sealing accessory, coating an adhesive on the inner wall surface of the sealing end of the carbon fiber pipe body and the side surface of the end with the smaller cross section area of the end-sealing accessory;
(2) inserting the end-sealing accessory coated with the adhesive into the sealing end of the carbon fiber pipe body until the end with the larger cross-sectional area of the end-sealing accessory is contacted with the port of the carbon fiber pipe body, and wiping the redundant adhesive until no adhesive flows out;
(3) inverting the sealing end of the carbon fiber tube body in the product assembled in the step (2) downwards until the adhesive does not flow out any more, and then flatly placing and standing the product until the adhesive is completely cured to obtain a carbon fiber end-capped semi-finished product;
(4) and (4) inserting a fixed accessory into the side opening on the carbon fiber end-capped semi-finished product obtained in the step (3), and further fixing the carbon fiber pipe body and the end-capped accessory to obtain the carbon fiber end-capped product.
7. The end capping method of claim 6, wherein in step (1) the carbon fiber pipe body and the end-capping fitting are provided with holes at positions such that the positions of the assembled holes coincide;
preferably, the composition of the adhesive in the step (1) comprises a main agent and a hardening agent;
preferably, the mass ratio of the main agent to the hardening agent is (1-3): 1.
8. The end-capping method according to claim 6 or 7, wherein in the step (2), when the end-capping fitting is inserted, the side of the end-capping fitting with the opening faces the side with the opening of the carbon fiber pipe body;
preferably, after the end-sealing accessory is inserted, the adhesive is wiped for multiple times until the end-sealing accessory is kept stand for 1-10 min and then does not flow out.
9. The end-capping process of any one of claims 6-8 wherein the assembled product of step (3) is inverted onto a jig support;
preferably, the fixture support is provided with a plane plate for horizontally placing the sealing end of the assembled product and at least two groups of fixed tubes positioned above the plane plate, and each group of fixed tubes comprises two fixed tubes arranged in parallel;
preferably, the distance between the two fixed tubes in each group of fixed tubes is the same;
preferably, the sets of fixed tubes are disposed on the same vertical plane.
10. The end-capping process of any one of claims 6-9, wherein the product inversion time after assembly in step (3) is 30-45 min;
preferably, the time for the assembled product in the step (3) to be laid flat and placed still is 20-30 hours;
preferably, the cross-sectional dimension of the insertion part of the fixing fitting in the step (4) is the same as the size of the opening;
preferably, before the insertion of the fixing part in the step (4), the surface of the insertion part is coated with an adhesive.
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| CN202011149023.0A CN112197000A (en) | 2020-10-23 | 2020-10-23 | Carbon fiber end-capped product and end-capping method |
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| CN202011149023.0A CN112197000A (en) | 2020-10-23 | 2020-10-23 | Carbon fiber end-capped product and end-capping method |
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