CN107351429A - A kind of method of the polymer matrix composites Forming Quality of raising Z Pin enhancings - Google Patents

A kind of method of the polymer matrix composites Forming Quality of raising Z Pin enhancings Download PDF

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Publication number
CN107351429A
CN107351429A CN201710499844.9A CN201710499844A CN107351429A CN 107351429 A CN107351429 A CN 107351429A CN 201710499844 A CN201710499844 A CN 201710499844A CN 107351429 A CN107351429 A CN 107351429A
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CN
China
Prior art keywords
pin
composite
blank
backing plate
pins
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Pending
Application number
CN201710499844.9A
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Chinese (zh)
Inventor
马金瑞
黄峰
刘强
赵龙
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AVIC TECHNOLOGY FOUNDATION ESTABLISHMENT
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AVIC TECHNOLOGY FOUNDATION ESTABLISHMENT
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Priority to CN201710499844.9A priority Critical patent/CN107351429A/en
Publication of CN107351429A publication Critical patent/CN107351429A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The invention belongs to polymer matrix composites forming technique, is related to a kind of method of the polymer matrix composites Forming Quality of raising Z Pin enhancings.The Pin pins on prominent composite product surface are removed after the inventive method curing molding again, cutter injures the risk of uncured stack surface when avoiding uncured preceding removal, and the article surface quality being molded is high.The present invention is by Pin pins implantation process and subsequent forming process, increase porous technique backing plate on composite blank, extraneous pressure is only acted upon at Pin pins when avoiding shaping, it is difficult to effectively be transferred to the risk of lamination between Pin pins and Pin pins, the Forming Quality of composite material parts is significantly improved.This method is applied widely, in terms of material to be reinforced, is not only suitable for Z Pin enhancing dry state fabrics, is applied to Z Pin enhancing prepreg blanks again, applies also for foam core filled composite material blank；In terms of structure type, Z Pin enhancing composite material flat plate parts are not only suitable for, are applied to the Z Pin enhancing composite products with certain curvature again.

Description

A kind of method of the polymer matrix composites Forming Quality of raising Z-Pin enhancings
Technical field
The invention belongs to polymer matrix composites forming technique, is related to a kind of resin base composite wood of raising Z-Pin enhancings Expect the method for Forming Quality.
Background technology
Z-Pin three-dimensional enhancing technologies are the new three-dimensional enhancing technologies developed on the basis of discontinuous suturing skill, its Enhancing mechanism is to introduce Pin pins in thickness of composite material direction, is combined together each layer of material, so as to improve the interlayer of product Performance and interface bonding strength.
After Pin pins to be implanted into uncured composite blank, the lamination between Pin pins and Pin pins is easy to by Pin pins Extruding supports, i.e. the composite blank of Z-Pin enhancings, the thickness of the composite blank in especially Z-Pin enhancings region Degree is more than the thickness of final composite product, and as the increase of Pin implant densities, this phenomenon are obvious all the more.Follow-up nothing By being that dry state fiber preform body is placed on die-filling matched moulds process in shaping mould, or prepreg blank is passed using tradition pressing plate Press through journey, the pressure that clamping pressure or autoclave provide by shaping mould or equal pressing plate function behind several Pin pins terminations, Pin Pin plays the effect of similar " bridge formation ", it is difficult to be effectively transferred to the lamination between Pin pins and Pin pins, so as to cause with Lower consequence：First, Pin pins occur crooked under pressure, the composite product surface quality after shaping is poor；Second, Pin pins Lamination between Pin pins is difficult to be compacted, and the composite product Z-Pin enhancings region after shaping produces loose, layering etc. Internal flaw.
The content of the invention
The purpose of the present invention is：It is poor for the polymer matrix composites surface quality and internal soundness of present Z-Pin enhancings The problem of, propose a kind of method of the polymer matrix composites Forming Quality of raising Z-Pin enhancings.
The present invention technical solution be,
Increase porous technique backing plate on composite blank, it is comprised the following steps that：
1) composite blank is prepared according to the laying scheme of design；
2) placed on composite blank and fix porous technique backing plate, the line-spacing and row of micropore on porous technique backing plate Away from the line-spacing with Pin pins to be implanted and row away from consistent；The thickness of porous technique backing plate [2] is 0.5mm~5mm, and the diameter in hole should Bigger 0.1mm~0.3mm than the actual diameter of Pin pin, the material of porous technique backing plate is metal or polytetrafluoroethylene (PTFE)；
3) Pin pins, the theoretic throat of thickness+composite material parts of length=porous technique backing plate of Pin pins are prepared；
4) the vertical composite implant material blank of micropore by Pin pins by porous technique backing plate, obtains assembly；
5) assembly is molded by the moulding process of composite blank；
6) it is to be combined it is body formed after, separate assembly on porous technique backing plate, the composite material parts after being molded Blank；
7) the Pin pins trimming of prominent composite material parts blank surface is polished smooth, obtains final composite zero Part.
The raw material of the composite blank are dry state fabric or prepreg.
The structure of the composite blank is laminate structures or foam sandwich construction.
The moulding process can use composite liquid moulding process, autoclave forming process, die press technology for forming or Non-autoclave vacuum forming technique.
The present invention has the advantage that and beneficial effect, the present invention by Pin pins implantation process and subsequent forming process, Increase porous technique backing plate on composite blank, extraneous pressure is only acted upon at Pin pins when avoiding shaping, it is difficult to effectively pass The risk of lamination between Pin pins and Pin pins is handed to, significantly improves the Forming Quality of composite material parts.
The technical advantage of the present invention is also embodied in：
1. moulding process simple possible, without making originaling forming technique occur to sexually revise at all, without special equipment, manufacture Cost is low；
After 2. porous technique backing plate introduces in Pin pin implantation process, forming process is remained into always, until part solidifies Separated after the demoulding with part.In addition to being play the guiding role in Pin pin implantation process, follow-up blank was molded the porous technique backing plate Cheng Zhong, under external pressure, Pin pins beyond composite blank thickness direction by the micropore of porous technique backing plate, Porous technique backing plate beyond micropore can give full play to the effect of equal pressing plate, and the lamination between Pin pins and Pin pins is compacted into famous dictum By thickness, avoid Z-Pin enhancings region and produce the internal flaws such as loose, layering；
3. porous technique backing plate can repeatedly use, easily separated after shaping with composite product；
4. this method is applied widely, in terms of material to be reinforced, Z-Pin enhancing dry state fabrics is not only suitable for, are fitted again Strengthen prepreg blank for Z-Pin, apply also for foam core filled composite material blank；In terms of structure type, Z- is not only suitable for Pin strengthens composite material flat plate part, is applied to the Z-Pin enhancing composite products with certain curvature again；In terms of moulding process, Available for kinds of processes such as composite liquid shaping, autoclave molding compression molding or non-autoclave vacuum formings.
5. the Pin pins on prominent composite product surface are removed after this method curing molding again, avoid it is uncured before go Except when cutter injure the risk of uncured stack surface, the article surface quality being molded is high.
The present invention is a kind of method of the polymer matrix composites Forming Quality of raising Z-Pin enhancings, and manufacturing process is simple, Without special equipment, manufacturing cost is low, improves the surface quality and internal soundness of Z-Pin reinforced resin based composites.
Brief description of the drawings
Fig. 1 is the structural representation of assembly 5 of the present invention；
Fig. 2 is the structural representation of composite material parts blank 6 of the present invention；
Fig. 3 is the structural representation of composite material parts 4 of the present invention.
Embodiment
The present invention is elaborated below in conjunction with the accompanying drawings.
Increase porous technique backing plate on composite blank, it is comprised the following steps that：
1) composite blank 1 is prepared according to the laying scheme of design；
2) placed on composite blank 1 and fix porous technique backing plate 2, the line-spacing of micropore on porous technique backing plate 2 Away from the line-spacing with Pin pins 3 to be implanted and arranged with row away from consistent；The thickness of porous technique backing plate 2 is 0.5mm~5mm, for the ease of Porous technique backing plate separates with Pin pins 3 below, and the diameter of micropore should be more bigger than the actual diameter of Pin pin 3；Porous technique backing plate 2 The maximum pressure and maximum temperature of technique initialization are resistant to, preferable material is metal or polytetrafluoroethylene (PTFE)；
3) Pin pins 3 are prepared, the theory of thickness+composite material parts 4 of length=porous technique backing plate 2 of Pin pins 3 is thick Spend the thickness of thickness+composite blank 1 of the porous technique backing plates 2 of ﹤；
4) bottom for the vertical composite implant material blank 1 of micropore that Pin pins 3 are passed through into porous technique backing plate 2, Pin is ensured Pin 3 obtains assembly 5 completely through in composite blank 1；
5) assembly 5 is molded by the moulding process of composite blank 1；
6) after body 5 to be combined is molded, the porous technique backing plate 2 on assembly 5, the composite zero after being molded are separated Part blank 6；
7) the Pin pins trimming on prominent composite material parts blank [6] surface is polished smooth, obtains final composite Part [4].
The raw material of the composite blank 1 are dry state fabric or prepreg；
The structure of the composite blank 1 is laminate structures or foam sandwich construction；
The thickness of described porous technique backing plate [2] is 0.5mm~3mm, and the diameter in hole should be than the actual diameter of Pin pin 3 Big 0.1mm~0.3mm, the arrangement in hole and the line-spacing of Pin pins implantation and is arranged away from consistent, the material of porous technique backing plate be metal or Polytetrafluoroethylene (PTFE)；
The moulding process can use composite liquid moulding process, autoclave forming process, die press technology for forming or Non-autoclave vacuum forming technique.
Embodiment 1
The present embodiment is related to Z-Pin enhancing dry state fiber preforms, then prepares composite zero using RTM moulding process Part.
Dry state fiber preform body to be reinforced is slab construction, and material is Zhoushan Zhejiang Mount Dai swift boat new material company U7192 carbon fiber one-way woven fabrics, thickness in monolayer 0.2mm, laying are [45/0/-45/90]4s, appearance and size is：600mm× 500mm × 6.4mm (length × width x thickness)
1) composite blank 1 is prepared according to the laying scheme of design；
2) placed on composite blank 1 and fix porous technique backing plate 2, the porous material of technique backing plate 2 is polytetrafluoro Vinyl plate, thickness 2mm, thereon micropore a diameter of 0.3mm, line-spacing and row are away from the line-spacing with Pin pins 3 to be implanted and row away from one Cause, be 3mm*3mm；
3) Pin pins 3 be using micro- pultrusion fibre reinforced bismaleimide resin based composites, a diameter of 0.28mm, The length of every Pin pin 3 to be implanted is 8.4mm.The vertical composite implant material of micropore that Pin pins 3 are passed through into porous technique backing plate 2 Blank 1, obtain the assembly 5 of porous technique backing plate 2 and composite blank 1 through Z-Pin enhancings；
4) assembly 5 is fixed in the female die of shaping mould, covers the upper mold section of shaping mould, Latch Lock is next, checks Mould sealing property, is vacuumized, and system carries out the injection of QY8911-IV resins when being warming up to 95 ± 5 DEG C；To be after the completion of injecting glue System is warming up to 190 DEG C, is incubated 1 hour, is then warming up to 230 DEG C again, is incubated 8 hours；
5) when mould is cooled to below 60 DEG C, the upper and lower half module of shaping mould is opened, takes out and separates porous technique backing plate 2 with shaping after composite material parts blank 6；
6) the Pin pins trimming on the prominent surface of composite material parts blank 6 is polished smooth, obtains final composite zero Part 4.
The presentation quality of part, internal soundness are satisfied by design requirement after testing.
Embodiment 2
The present embodiment is related to Z-Pin enhancing prepregs, then prepares composite material parts using autoclave forming process.
Prepreg lamination to be reinforced is slab construction, and thickness in monolayer 0.125mm, laying is [45/0/-45/90]4s。 Appearance and size is：400mm × 500mm × 4mm (length × width x thickness).
1) composite blank 1 is prepared according to the laying scheme of design；
2) to be placed on composite blank 1 and fix porous technique backing plate 2, the porous material of technique backing plate 2 is LY12CZ, Thickness is 1mm, thereon a diameter of 0.53mm of micropore, and line-spacing and row away from the line-spacing with Pin pins 3 to be implanted and are arranged away from consistent, For 5mm*5mm；
3) Pin pins 3 be using micro- pultrusion fibre reinforced bismaleimide resin based composites, a diameter of 0.5mm, often The length of root Pin pins 3 to be implanted is 5mm.The vertical composite implant material blank of micropore that Pin pins 3 are passed through into porous technique backing plate 2 1, obtain the assembly 5 of porous technique backing plate 2 and composite blank 1 through Z-Pin enhancings；
4) assembly 5 is fixed on shaping mould, encapsulated using vacuum bag, checked sealing property, be then placed in autoclave In, heated up, pressurizeed, solidified；
5) when mould is cooled to below 60 DEG C, vacuum bag is opened, after taking out and separating porous technique backing plate 2 and be molded Composite material parts blank 6；
6) the Pin pins trimming on the prominent surface of composite material parts blank 6 is polished smooth, obtains final composite zero Part 4.
The presentation quality of part, internal soundness are satisfied by design requirement after testing.

Claims (4)

1. a kind of method of the polymer matrix composites Forming Quality of raising Z-Pin enhancings, it is characterized in that, in composite blank [1] porous technique backing plate [2] is increased on, it is comprised the following steps that：
1) composite blank [1] is prepared according to the laying scheme of design；
2) placed on composite blank [1] and fix porous technique backing plate [2], the row of micropore on porous technique backing plate [2] Away from row away from the line-spacing with Pin pins [3] to be implanted and arrange away from consistent；The thickness of porous technique backing plate [2] is 0.5mm~5mm, micro- The diameter in hole should be bigger 0.1mm~0.3mm than the actual diameter of Pin pin [3], and the material of porous technique backing plate is metal or polytetrafluoro Ethene；
3) Pin pins [3], the reason of thickness+composite material parts [4] of length=porous technique backing plate [2] of Pin pins [3] are prepared By thickness；
4) the vertical composite implant material blank [1] of micropore by Pin pins [3] by porous technique backing plate [2], obtains assembly [5]；
5) assembly [5] is molded by the moulding process of composite blank [1]；
6) after body [5] shaping to be combined, the porous technique backing plate [2] on assembly [5], the composite after being molded are separated Part blank [6]；
7) Pin pins [3] trimming on prominent composite material parts blank [6] surface is polished smooth, obtains final composite Part [4].
2. the method for the polymer matrix composites surface quality of raising Z-Pin enhancings according to claim 1, its feature exist In the raw material of the composite blank [1] are dry state fabric or prepreg.
3. the method for the polymer matrix composites surface quality of raising Z-Pin enhancings according to claim 1, its feature exist In the structure of the composite blank [1] is laminate structures or foam sandwich construction.
4. the method for the polymer matrix composites surface quality of raising Z-Pin enhancings according to claim 1, its feature exist In the moulding process can use composite liquid moulding process, autoclave forming process, die press technology for forming or non-hot pressing Tank vacuum forming technique.
CN201710499844.9A 2017-06-27 2017-06-27 A kind of method of the polymer matrix composites Forming Quality of raising Z Pin enhancings Pending CN107351429A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110303696A (en) * 2019-07-09 2019-10-08 株洲时代新材料科技股份有限公司 Z-PIN enhances honeycomb sandwich board and its moulding process
CN112571828A (en) * 2020-11-25 2021-03-30 长春长光宇航复合材料有限公司 Z-Pin prefabricated structure and Z-direction enhanced implantation method using same
CN111531913B (en) * 2020-03-26 2021-05-04 吉林大学 Z-pin based on bionic interlocking, composite material and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166923A (en) * 1987-12-23 1989-06-30 Hitachi Ltd Vacuum mold for plastic forming
CN101668633A (en) * 2007-09-17 2010-03-10 韩国航空宇宙研究院 By the method for inserting composite laminated structure that pin strengthens and manufacturing method and apparatus thereof and making this device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166923A (en) * 1987-12-23 1989-06-30 Hitachi Ltd Vacuum mold for plastic forming
CN101668633A (en) * 2007-09-17 2010-03-10 韩国航空宇宙研究院 By the method for inserting composite laminated structure that pin strengthens and manufacturing method and apparatus thereof and making this device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110303696A (en) * 2019-07-09 2019-10-08 株洲时代新材料科技股份有限公司 Z-PIN enhances honeycomb sandwich board and its moulding process
CN110303696B (en) * 2019-07-09 2021-07-20 株洲时代新材料科技股份有限公司 Z-PIN reinforced honeycomb sandwich board and forming process thereof
CN111531913B (en) * 2020-03-26 2021-05-04 吉林大学 Z-pin based on bionic interlocking, composite material and preparation method thereof
CN112571828A (en) * 2020-11-25 2021-03-30 长春长光宇航复合材料有限公司 Z-Pin prefabricated structure and Z-direction enhanced implantation method using same

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Application publication date: 20171117