CN1033498C - "Three base circle" winding shaping process for single tube type three-direction composite material load-carrying member - Google Patents
"Three base circle" winding shaping process for single tube type three-direction composite material load-carrying member Download PDFInfo
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- CN1033498C CN1033498C CN92101640A CN92101640A CN1033498C CN 1033498 C CN1033498 C CN 1033498C CN 92101640 A CN92101640 A CN 92101640A CN 92101640 A CN92101640 A CN 92101640A CN 1033498 C CN1033498 C CN 1033498C
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Abstract
The present invention relates to three base circle winding and shaping technology for joint pipe type three-way composite material force bearing members. Firstly, natural joint pipes (bamboo pipes) are used, or fiber is used for manufacturing the joint pipes with the characteristic of a three-way composite material structure by a winding method, and the joint pipes can be manufactured into joint pipe beams through any reinforcement; then, three joint pipes or joint pipe beams wind through a fiber or textile fabric circular direction or other directions to manufacture a three base circular beam. Three base circular beams are used for optional combination, connection and branch to manufacture engineering force bearing members with various shapes and structures. The method has the advantages of simple technology and low cost, and can be widely applied to the fields of aviation, spaceflight, construction, etc.
Description
The invention belongs to the forming method of composite material load-carrying member.
According to the direction of fortifying fibre, composite can divide single, double and the three-dimensional composite.Only there is two-way composite to be applied at present.Two-way composite also is laminate, and its production technology is to be laminated to the master.Be only applicable to do stressed less cladding material at the engineering la m,,, cause interlaminar strength low, be easy to destroy owing to can not get effective enhancing between the layer of laminate and the layer for the bigger load spare of carrying.
Since the eighties, developed the 3 D weaving moulding process both at home and abroad, used weaving method to make the three-dimensional composite, it has been used under the big load-up condition as main load-bearing part.But the complex process equipment of three dimensional knitting method, fiber subject to damage in the braiding process, braiding back impregnation quality is wayward, and therefore in fact the three-dimensional composite of 3 D weaving does not also enter the practical stage.
The another kind of forming method of composite, that twines exactly.Winding can the shape layer pipe, and layer tubing is similar to the laminate of composite, can control owing to twine the direction of fiber, so can be made into the layer pipe of different performance.Because the effect of fiber tension, the interlaminar strength of layer pipe is higher than laminate, but when layer pipe uses when bearing bending load as bearing beam, failure mode breaks based on the maximum stress zone, this zone is the outer marginal portion up and down of layer pipe just, and this regional stress is big and area is little, is easy to produce local failure, therefore the layer pipe of this winding as hold into the application of member also very limited.
Also having a kind of forming method is the group tubular construction.This structure utilizes adhering method to make Ji Liang the pipe fitting that a plurality of winding fibers form.As United States Patent (USP) 2238427.But because multitube spare does not have necessary stability, at first can't make gapless group of Guan Jiliang, secondly the group pipe is easy to the changing of the relative positions when load, can't keep the rigidity of Ji Liang, and therefore this structure can't be widely used so far.
So-called Ji Liang refers to a kind of no any branch, and the member of continuous outer surface is arranged.This basic beam can be a solid beam, can be hollow beam also, as I-steel, tubular or the like.Member through branch, no continuous outer surface then is called trusses.Trusses is made up of the Ji Liang of various branches form.Its branched structure and no continuous outer surface are the important evidence of distinguishing trusses and Ji Liang.
Purpose of the present invention, for guaranteeing the stability and the rigidity of member, twine three of the pipe joints made with natural pipe joint bamboo trunk or with composite fiber by certain technology, hoop wound composite fiber is made the Ji Liang of three basic circles, and promptly three basic circle Ji Liang are the base growth combination with three basic circle Ji Liang, methods such as branch, connection and reinforcement, make all size, the load-carrying member of different shape, thereby the complete moulding process of three basic circle composite material load-carrying member structures.
The present invention is a kind of three basic circle winding, molding methods of pipe joint formula three-dimensional composite material load-carrying member, it is to twine system pipe joint and beam with fiber, the preparation method who it is characterized in that pipe joint of the present invention is through joining glue, impregnation, and technical process such as fiber winding, cure under pressure, demoulding stripping band are made; Then, three pipe joints are formed one group, twine fiber mode with hoop and make three basic circle beams, make up through connecting with three basic circle beams at last, twine through fiber and make the combination load-carrying member with branch.
Bamboo is a kind of natural pipe joint of good mechanical performance, can directly make the member that three basic circle beams and three basic circle beams are formed.
The technical process of making three basic circle beams is basic identical with the technical process of making three basic circle beams, three basic circle combined members, both having used natural pipe joint--bamboo also is like this when making load-carrying member, though needn't twine with fiber and make pipe joint, but making three basic circle beams, still twine when making three basic circle beam combined members with fiber, these fibers also are the fibers behind the interior impregnation of glue (joining glue) for preparing when being used in the manufacturing pipe joint, and therefore the glue of joining and gum dipping process process are also arranged.
When making pipe joint, three basic circle beams and three basic circle combined members,, need sometimes reinforcement is carried out in its part for improving local mechanical property according to the stressing conditions difference; Connecting and during branch as three basic circle beams of member, also need to carry out reinforcement, but the reinforcement during this connection has reinforcement and the outer reinforcement of pipe joint in the pipe joint, outer reinforcement of pipe joint and aforesaid pipe joint, three basic circle beams are identical with the local reinforcement of three basic circle beam combined members, be about to go the unidirectional pre-immersion material after molten to be layered on the position that needs reinforcement by impregnation, then impregnation is gone molten back fibrous ring to being wrapped on this position, after winding is finished, go the unidirectional pre-immersion material after molten to be layered on this reinforcement position with impregnation again, carrying out hoop again twines, several times are promptly finished local reinforcement so repeatedly.For reinforcement in the pipe joint of three basic circle beams connection, be by the pipe joint internal diameter that connects, make the tubular type rod, among the endoporus with its rod insertion two connecting tubes, use bonding and reinforcing then.
This invention compared with prior art, has good stability, rigidity is big, process is simple, the characteristics of processing ease, and can be combined into the size dimension difference, stable load-carrying member that cross sectional shape is different and astable load-carrying member, and can carry out branch and connect, be a kind of desirable composite material I process.Description of drawings: Fig. 1 is the schematic side view of giving the selected earlier tube that will be wound in pipe joint; Fig. 2 is the front elevational schematic of giving the selected earlier tube that will be wound in pipe joint, and the fiber of winding is arranged on it
The material signal; Fig. 3 is the schematic side view of pipe joint beam, and projection is a signal reinforcement part about it; Fig. 4 is the front elevational schematic of pipe joint beam; Fig. 5 is by three basic circle beam generalized sections of the equilateral triangle that waits Guan Jingsan root pipe joint or pipe joint beam to form; Fig. 6 is equated by two calibers and three basic circle beam generalized sections of a caliber and its isosceles triangle that does not wait to form; Fig. 7 is by each unequal scalene three basic circle beam generalized section of forming of three calibers; The polygon load-carrying member generalized section that Fig. 8 is made up of a plurality of three basic circle beams; The I-beam load-carrying member schematic diagram that the three basic circle beams that Fig. 9 is made up of two equilateral triangles constitute; The wing load-carrying member schematic diagram that Figure 10 is made up of a plurality of three different basic circle beams; Figure 11 is three basic circle beam connection diagrams; Figure 12 is branch's schematic diagram of three basic circle beams.
Pipe joint, three basic circle beams and basic identical by the winding process process of three basic circle beams combination load-carrying member more than two, its technical process and different technical process describe in detail in following embodiment respectively.
Embodiment 1 makes three basic circle beams, with three different tube diameters or etc. the pipe joint of caliber make three basic circle beams (Fig. 5) of equilateral triangle, the three basic circle beams (Fig. 6) and the scalene three basic circle beams of isosceles triangle, its technological process is as follows:
(1) joins glue with heat cured epoxy resin,, add curing agent, be adjusted to suitable gelatin viscosity, can carry out impregnation with solvent (as acetone, ethanol etc.) dilution;
(2) impregnation immerses fiber (carbon fiber, glass fibre etc.) in the glue for preparing, the fibrous ring that will soak gluing then is to being wrapped on the beam barrel, note between every circulary fibres little gap being arranged, promptly two rings should not stick together, isolate with adhesive between layer and the layer simultaneously, the latex bonded fibre that these is entangled on the beam barrel is placed in the vacuum drying chamber then, 80 °～90 ℃ of temperature, under the 700 millimetres of mercury condition of high vacuum degree solvent in the latex bonded fibre is got rid of, used in order to twining;
(3) twining tubular article or three pipe joints that will give earlier selected diameter earlier is fixed on the wrapping machine, to take off the latex bonded fibre heating of solvent then as required, to reduce the viscosity of the resin on the fiber, the latex bonded fibre of heating is pressed the interlayer orthogonal direction to be twined, its fiber spacing is about the width of fibre bundle, layering is wrapped on three pipe joints or the pipe joint beam assembly, twines fibre bundle and repeatedly presses mutually;
(4) cure under pressure is with above-mentioned three pipe joint assemblys of pipe joint through the winding fiber, use fiberglass braided band afterburning winding on wrapping machine, after finishing, three pipe joint assemblys that fiberglass braided band is twined in reinforcing are placed in the baking oven and are cured, and its temperature is 80～90 ℃;
(5) the fiberglass braided band of reinforcing is peelled off after solidifying, cylindrical die is extracted then three basic circle beams and pipe joint are finished in the pipe joint.
Utilize above-mentioned technical process, a plurality of three basic circle beams combinations can be made difformity, different-diameter, the stable load-carrying member of different performance, polygon load-carrying member as shown in Figure 8 equally; And the wing load-carrying member of unstable load-carrying member such as Figure 10, and can be with three basic circle beams through the load-carrying member that connects, branch can make all size, different shape, these will describe in detail among the embodiment below.
Embodiment 2 is about making the technical process embodiment by the wing load-carrying member of a plurality of three basic circle beams combinations.It is basic identical that this technical process and embodiment 1 make five processes of three basic circles, as join glue, impregnation etc., and difference here only is described; A plurality of various triangles at first draw the section shape of load-carrying member, make its mould bases by the section shape of this load-carrying member that will make and the length of member, to be fixed on by the three basic circle beams that these triangles are made then on the corresponding mould bases position, again the fiber of precipitation behind the impregnation in the gap of three basic circle beams, winding direction is according to ab, bc ... rule is twined, twine so repeatedly in the gap that fiber is riddled these member three basic circle beams, thereby a plurality of three basic circle beams are intertwined, this is placed on heats in the baking oven 80～90 ℃ at last solidify combined member.
Embodiment 3, are the connection and the branches of three basic circle beams, as Figure 11 and Figure 12.For connection, only need the interface of three basic circle beams is scatter, certain root in another three basic circles beam or three pipe joints are linked up by tube is corresponding with it, then it is carried out reinforcement, reinforcement has reinforcement in the pipe joint, promptly by the pipe joint internal diameter that connects, makes rod in the pipe, among the endoporus with its rod insertion two pipes, use the adhering method reinforcement then; Another is the outer reinforcement of pipe joint that the fiber identical with the pipe joint local reinforcement twines; For branch, be to be intertwined with same two bend pipes connection of an end of two bend pipes in the three basic circle beams and with unidirectional pre-immersion material or its fabric, the other end with two bend pipes is intertwined with unidirectional pre-immersion material or its fabric again.
The member of making by technology of the present invention can be low with cost, the natural bamboo trunk of raw material wide material sources, good mechanical performance.Therefore the present invention has very strong economic and social benefit, has wide practical value.
Claims (13)
1, a kind of three basic circle winding, molding methods of pipe joint formula three-dimensional composite material load-carrying member, be to twine system pipe joint and beam with fiber, the preparation method who it is characterized in that base components pipe joint of the present invention is that glue, impregnation, fiber twine, cure under pressure through joining, and demoulding stripping band operation is made; Form one group with three pipe joints afterwards, twine fiber mode with hoop and make three basic circle beams; Make load-carrying member through connection or branch's combination through the fiber winding with three basic circle beams at last.
2, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, it is characterized in that making and join adhesive process in the pipe joint, comprise, dilute with acetone or alcohol with heat cured epoxy resin, the adjusting of adding curing agent, use to make impregnation.
3, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, it is characterized in that making the gum dipping process of pipe joint, comprise that carbon fiber or glass fibre immerse in the glue for preparing, the fibrous ring that will soak gluing then is to being wrapped on the beam barrel, when twining, do not allow between the fibrous ring mutually bonding, to isolate with adhesive between layer and the layer, the latex bonded fibre that these is entangled on the beam barrel is placed in the vacuum drying chamber then, 80～90 ℃ of temperature, under 700 millimeters vacuums the solvent in the latex bonded fibre is got rid of.
4, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, the winding process that it is characterized in that pipe joint is that the cylindrical die of determining earlier that gives that will make pipe joint is fixed on the wrapping machine, to take off the latex bonded fibre heating of solvent then, the latex bonded fibre of heating is pressed the interlayer orthogonal direction to be twined, its fiber spacing is about the width of fibre bundle, layering is wrapped on the cylindrical die, twines fibre bundle and repeatedly presses mutually.
5, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, it is characterized in that winding shaping process for three basic circle beams, be that three pipe joint combinations are fixed on the wrapping machine, to take off the latex bonded fibre heating of solvent then, the latex bonded fibre of heating is pressed the interlayer orthogonal direction twine, its fiber spacing is the width of fibre bundle; Layering is wrapped on three pipe joint compositions, twines fibre bundle and repeatedly presses mutually.
6, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, the winding process that it is characterized in that load-carrying member is that three basic circle beam compositions are fixed on the wrapping machine, to take off the latex bonded fibre heating of solvent then, the latex bonded fibre of heating is pressed the interlayer orthogonal direction to be twined, its fiber spacing is about the width of fibre bundle, layering is wrapped on the three basic circle beam compositions, twines fibre bundle and repeatedly presses mutually.
7, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, it is characterized in that cure under pressure and demoulding stripping band technology, comprising will be through pipe joint, three basic circle beams or a plurality of three basic circle beam composition after twining fibre technology, use fiberglass braided band afterburning winding on wrapping machine, after finishing, place it in the baking oven and be cured, its temperature is 80～90 ℃, after the curing, fiberglass braided band is peelled off, cylindrical die is transferred in the pipe joint then finished.
8, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, it is characterized in that also comprising part place's reinforcement technology to pipe joint, three basic circle beams and connection or branch, method is to be layered on the three basic circle beam reinforcement positions of pipe joint or member going unidirectional after molten to give to soak material by impregnation, then impregnation is gone fibrous ring after molten to being wrapped on this position.
9, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, the connecting process that it is characterized in that described three basic circle beams, comprise that the interface with three basic circle beams scatter, certain root in another three basic circles beam or three pipe joints are linked up by tube is corresponding with it, then it is carried out reinforcement.
10, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, the branch's technology that it is characterized in that described three basic circle beams, comprise that the end with two bend pipes in the three basic circle beams is linked together reinforcement then with two straight tubes.
11, according to three basic circle winding, molding methods of claim 9 or 10 described a kind of pipe joint formula three-dimensional composite material load-carrying members, it is characterized in that reinforcement in the described pipe joint, technology comprises by the pipe joint internal diameter that connects makes the tubular type rod, among the endoporus with its rod insertion two connecting tubes, use the adhering method reinforcement.
12, three basic circle winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1, it is characterized in that described three basic circle beams constitute the technology of load spare, comprise earlier section shape with load-carrying member a plurality of various triangles that draw, make its mould bases by the section shape of this load-carrying member and the length of member, the three basic circle beams of making by these triangles are fixed on the corresponding mould bases position then, again the fiber of precipitation behind the impregnation in the gap of three basic circle beams, twine according to certain orientation, twine so repeatedly in the gap that fiber is riddled these member three basic circle beams, thereby a plurality of three basic circle beams are intertwined, and this to be placed on heat in the baking oven 80～90 ℃ at last solidifies.
13, three basic circle beam winding, molding methods of a kind of pipe joint formula three-dimensional composite material load-carrying member according to claim 1 is characterized in that described pipe joint makes pipe joint for the natural composite material bamboo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92101640A CN1033498C (en) | 1992-03-14 | 1992-03-14 | "Three base circle" winding shaping process for single tube type three-direction composite material load-carrying member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92101640A CN1033498C (en) | 1992-03-14 | 1992-03-14 | "Three base circle" winding shaping process for single tube type three-direction composite material load-carrying member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1074641A CN1074641A (en) | 1993-07-28 |
| CN1033498C true CN1033498C (en) | 1996-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92101640A Expired - Fee Related CN1033498C (en) | 1992-03-14 | 1992-03-14 | "Three base circle" winding shaping process for single tube type three-direction composite material load-carrying member |
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| CN (1) | CN1033498C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392535B (en) * | 2011-08-02 | 2013-08-07 | 上海交通大学 | Preparation method of carbon fiber-reinforced moso bamboo serving as secondary structure of steel structure |
| CN103817763B (en) * | 2014-03-10 | 2016-07-06 | 李恒光 | Circle bamboo environment-friendly light shape extrusion method |
| CN108263496A (en) * | 2016-12-31 | 2018-07-10 | 郑州吉田专利运营有限公司 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
| CN109707989B (en) * | 2018-11-27 | 2020-12-25 | 航天特种材料及工艺技术研究所 | Composite material spherical gas cylinder and preparation method thereof |
| CN114766231B (en) * | 2022-03-10 | 2023-03-14 | 合肥水泥研究设计院有限公司 | Coil ribbon of wire metal silk of preventing inlaying |
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1992
- 1992-03-14 CN CN92101640A patent/CN1033498C/en not_active Expired - Fee Related
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| CN1074641A (en) | 1993-07-28 |
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