CN103817956B - A kind of forming method of continuous fiber reinforced thermoplastic resin based composites - Google Patents

A kind of forming method of continuous fiber reinforced thermoplastic resin based composites Download PDF

Info

Publication number
CN103817956B
CN103817956B CN201410116105.3A CN201410116105A CN103817956B CN 103817956 B CN103817956 B CN 103817956B CN 201410116105 A CN201410116105 A CN 201410116105A CN 103817956 B CN103817956 B CN 103817956B
Authority
CN
China
Prior art keywords
continuous fiber
resin
composite
composites
thermoplastic resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410116105.3A
Other languages
Chinese (zh)
Other versions
CN103817956A (en
Inventor
焦莎
赵国盟
何建平
张晓玲
于建政
郑晓冬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aerospace Precision Products Co Ltd
Original Assignee
Aerospace Precision Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aerospace Precision Products Co Ltd filed Critical Aerospace Precision Products Co Ltd
Priority to CN201410116105.3A priority Critical patent/CN103817956B/en
Publication of CN103817956A publication Critical patent/CN103817956A/en
Application granted granted Critical
Publication of CN103817956B publication Critical patent/CN103817956B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/40Shaping or impregnating by compression not applied
    • B29C70/42Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/46Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
    • B29C70/48Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/54Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing

Abstract

The invention provides the forming method of a kind of continuous fiber reinforced thermoplastic resin based composites, in advance resin monofilament and continuous fiber tow are woven to composite filament, in composite filament, resin matrix is wrapped in the surface of continuous fiber tow, heating and mould pressing afterwards, resin matrix and continuous fiber are preferably infiltrated combination in the process, and continuous fiber ratio in the composite can be accurately controlled, mould can design difform lumen type, it is thus possible to the solid bar of molding certain cross sectional.This method is suitable for the composite product that forming shape is more complicated, and can one-shot forming, production efficiency is high, continuous fiber is uniformly distributed in the composite, it is to avoid obvious fiber fractionation problem, and the composite product intensity of gained is greatly promoted.

Description

A kind of forming method of continuous fiber reinforced thermoplastic resin based composites
Technical field
The invention relates to technical field of material, relates to the forming method of a kind of composite.
Background technology
Along with the development of material science and technology, composite technology of preparing becomes the focus of world today's research One of.The most domestic method preparing continuous fiber reinforced thermoplastic resin based composites has pultrusion Method, roll process, extrusion molding, stamping of powder method, winding method etc., these methods are respectively arranged with pluses and minuses, but The common limitation that these methods exist be the composite of molding can only be sheet material, band or tubing, nothing Method shaping solid bar.
Further, existing forming method is difficult to meet reinforcing fiber and matrix resin is uniformly distributed and matrix tree The fat requirement to reinforcing fiber thorough impregnation, the composite that Chinese patent CN101259752 provides becomes Type method use fibrous layer add the mode of resin to realize resin wetting fibre after being placed in mold cavity, In the composite that this mode obtains, continuous fiber is layered distribution, and the bond strength of fiber interlayer is relative More weak, this allows for composite under certain loads, easily from fiber interlayer stripping damage so that it is strong Degree is substantially reduced.
Composite solid bar can be applicable to the system of the parts such as composite slender rod piece, securing member Make, there is huge using value, it is therefore desirable to a kind of continuous fiber reinforced thermoplastic resin base composite wood The forming method of material solid bar.
Summary of the invention
The problem that the invention is to be solved is to provide a kind of continuous fiber reinforced thermoplastic resin base and is combined The forming method of material solid bar, and realize continuous fiber being uniformly distributed in the cross section of solid bar.
For solving above-mentioned technical problem, the invention the technical scheme is that a kind of continuous fiber increases The forming method of strong thermoplastic resin based composite material, comprises the following steps:
Weave composite filament the most in advance: compiled by the outer layer fiber silk of thermoplastic resin monofilament with continuous fiber tow Knit, form the composite filament of resin monofilament parcel continuous fiber tow, then described composite filament is cut into silk section;
S2. throw in silk section and enter mould: according to the density needed for composite product and volume, weigh certain The described silk section of quality is put in the mold cavity of molded composite material, and described mould includes for compacting composite wood Material provides the formpiston of pressure and is used for the former of molding certain cross sectional bar, described silk section is thrown in Entering in described former, close formpiston;
S3. heating after mold: will assembling after mould be placed in heating mantle be heated to resin melting, resin With press ram, described formpiston is pressed into described former after being completely melt;
S4. the demoulding: mold to required specification and stop heating and keep the pressure molded, be cooled to Pressure relief after resin is firmly solid, the then demoulding.
Wherein, in S1 the quantity of resin monofilament according to resin required in composite and continuous fiber Ratio-dependent.Can control in composite by adjusting the count of resin monofilament and continuous tow Resin and the ratio of continuous fiber.
Wherein, the silk segment length described in S1 is directly proportional to the size of composite product, and i.e. size is more Silk segment length needed for little goods is the shortest, and the silk segment length needed for the goods that size is the biggest is the longest.
Further, in determining S1 on the premise of resin and continuous fiber ratio, silk section described in S2 Quality be multiplied by its volume equal to the density of composite product to be produced, add 3%~5% Volatile matter, the loss of burr.
Wherein, the heating-up temperature in S3 determines according to the build-in attribute of the thermoplastic resin used, The thermoplastic resin bigger for dissolving rear viscosity, maximum heating temperature is set to more than this melting point resin 25 DEG C~40 DEG C, the heating-up temperature in S3 gradually rises more than described melting point resin from room temperature 25 DEG C~40 DEG C, and 25 DEG C~40 DEG C insulation to resins are completely melt more than described melting point resin.
Wherein, on the premise of the density determining forming composite and volume specification, pressure in S3 Compressing head is molded composite material extremely required specification in 2s-4s, and pressurize is the most solid to resin.
Further, the mold pressing in S3 is quickly to mold, i.e. formpiston is pressed in 2s~4s by press ram Former, during this produce escaping gas will certainly cause in composite product produce bubble, The defects such as layering, before therefore putting into silk section in S2, arrange exhaust groove or aerofluxus in mold cavity wall Hole.
By above step, continuous fiber tow and resin monofilament shuffling are by the method that employing weaves in advance Composite filament, and throw in mold cavity by cutting the silk section, it is heated to resin melting, the resin after fusing Infiltration continuous fiber about, therefore can realize resin and continuous fiber preferably infiltrates combination, heating After composite under the pressure of formpiston, be shaped to the solid bar of cavity space shape.
During molding after heating, continuous fiber structure and performance there is not the change of matter, and set Aliphatic radical body is the most at high temperature molten into viscosity flow state, under pressure viscous wrap up in continuous fiber flowing until Filling up mold cavity, during this, resin and continuous fiber are able to good infiltration and combine, and composite Can be the solid bar of certain cross sectional according to mold cavity shapes one-shot forming.
The invention has the advantage that with good effect:
Weave composite filament the most in advance, and intercept silk section and put in mold cavity, use afterwards first to heat and mold afterwards Mode the silk section of composite filament is pressed into solid bar, resin matrix and continuous fiber obtain in the process Preferably to infiltrate combination, and mould can design difform lumen type, it is thus possible to molding is specific transversal The solid bar of face shape.
2. can accurately control resin and continuous fiber ratio in the composite in S1.
3. resin matrix and continuous fiber are tightly combined, and continuous fiber is uniformly distributed in the composite, keep away Having exempted from obvious fiber fractionation problem, the composite product intensity of gained is greatly promoted.
4. this method is suitable for the composite product that forming shape is more complicated, and can one-shot forming, raw Product efficiency is high, can realize mechanization and the automatization of production process, be used for producing composite system in enormous quantities Product.
Accompanying drawing explanation
Fig. 1 is the braiding structure schematic diagram of composite filament in the present invention;
Fig. 2 is the structural representation of mould in the present invention, and Design of Dies pattern of the present invention does not limits to With pattern shown in this figure.
In figure: 1 continuous fiber tow;2 resin monofilaments;3 press rams;4 formpistons; 5 formers;
Detailed description of the invention
The core thinking of the present invention is in advance resin monofilament 2 and continuous fiber tow 1 to be woven to composite filament, In composite filament, resin matrix is wrapped in the surface of continuous fiber tow 1, afterwards heating and mould pressing, heated Resin matrix fusing flowing in journey, thus combination, the pressure in mold process is preferably infiltrated with continuous fiber Power makes resin be wrapped in continuous fiber to flow in mold cavity until being full of mold cavity, thus molding mould The solid bar of chamber shape, and different moulds can be designed according to different bar cross sections with dimensional requirement Tool.
Continuous fiber involved in the present invention is various organic or inorganic fibers, does not limit certain specific Fiber;Thermoplastic resin involved in the present invention includes all thermoplastic resins, does not limit certain specific Thermoplastic resin, maximum heating temperature of the present invention need to consolidating according to the thermoplastic resin used Having attribute to determine, for the thermoplastic resin that viscosity after fusing is bigger, maximum heating temperature is with this thermoplastic More than property melting point resin it is advisable for 30 DEG C.
Below in conjunction with the accompanying drawings the specific embodiment of the invention is elaborated:
Embodiment 1:
The present invention uses and weaves the method for then heating and mould pressing in advance to prepare continuous fiber reinforced thermoplastic tree Resin composite material solid bar.This sentences and prepares continuous carbon fibre reinforced polyether ether ketone by accompanying drawing 2 mould The Technology of the present invention is illustrated as a example by polymer matrix composites semicircle column type solid bar.First with Braider is by a diameter of to several (determining according to the ratio of reinforcing fiber with resin matrix, such as 16) 0.1~0.2mm (such as 0.15mm) polyether-ether-ketomonofilament monofilament braiding be wrapped in a branch of continuous carbon fibre (as Specification is the carbon fiber of 3K) surface formation composite filament, composite filament is cut into Len req size (with the moon The length of mould die cavity is identical, such as 40mm) silk section, by several (diameter of rod according to final preparation Size determines, such as 23) silk section put in former 5 die cavity, close formpiston 4, the mould that will install Tool is placed in heating mantle heating, is heated to more than polyether-ether-ketone fusing point 25~40 DEG C (30 DEG C is optimal) and protects Temperature 10~15min, then uses press ram 3 with the power of 1.2~2.4T (such as 1.8T) by formpiston 4 Press-in former 5, until molding to required specification, cooling and demolding after pressurize 5~10min, obtains institute Need the continuous carbon fibre reinforced polyether ether ketone of specification (such as a diameter of 4.7mm, a length of 40mm) Polymer matrix composites semicircle column type solid bar.
Embodiment 2:
By uniform for nylon 6 monofilament of several (such as 8) a diameter of 0.1~0.2mm (such as 0.18mm) Braiding is wrapped in a branch of continuous aramid fiber (if specification is the aramid fiber of 600dtex) surface and makes multiple Plying, is cut into the silk section of identical with the length of former 5 die cavity (such as 80mm), by several by composite filament (such as 23) silk section is put in former 5 die cavity, and close formpiston 4, is placed in by the mould installed and adds hot charging Put middle heating, be heated to more than nylon 6 fusing point 25~40 DEG C (30 DEG C is optimal) insulation 10~15min, Then with the power of 2.4~4.8T (such as 3T), formpiston 4 is pressed into former 5 until mould with press ram 3 It is depressed into required specification, cooling and demolding after pressurize 5~10min, obtains required specification (such as length Degree is for 80mm) continuous aramid fiber reinforced nylon 6 polymer matrix composites solid bar.
Embodiment 3:
By equal for the polyphenylene sulfide filaments of several (such as 32) a diameter of 0.1~0.2mm (such as 0.16mm) Even braiding is wrapped in a branch of glass fibre (if specification is the glass fibre of 600tex) surface and makes composite filament, Composite filament is cut into the silk section of identical with the length of former 5 die cavity (such as 100mm), by several (as 16) silk section puts in former 5 die cavity, and close formpiston 4, is placed in heater by the mould installed Heating, is heated to more than polyphenylene sulfide fusing point 25~40 DEG C (30 DEG C is optimal) insulation 10~15min, Then with the power of 1.2~2.4T (such as 1.8T), formpiston 4 is pressed into former 5 with press ram 3 until Mold to required specification, cooling and demolding after pressurize 5~10min, obtain required specification (as A length of 100mm) continuous glass fibre strengthen polyphenylene sulfide resin resin-based composite solid bar.
Mould as shown in Figure 2 is only as a example by bar shape of cross section semicircular in shape, the mould in the present invention Tool design pattern does not limit to and pattern shown in this figure, and mould may be designed as the most required shape and size.
Above the embodiment of the invention is described in detail, but described content has been only present invention wound The preferred embodiment made, it is impossible to be considered the practical range for limiting the present invention.All according to the invention Equalization change and the improvement etc. that scope is made, within all should still belonging to this patent covering scope.

Claims (9)

1. the forming method of a continuous fiber reinforced thermoplastic resin based composites, it is characterised in that: Comprise the following steps:
Weave composite filament the most in advance: compiled by the cellosilk of thermoplastic resin monofilament with continuous fiber tow outer layer Knit, form the composite filament of resin monofilament parcel continuous fiber tow, then described composite filament is cut into silk section;
S2. throw in silk section and enter mould: according to the density needed for composite product and volume, weigh certain The described silk section of quality is put in the mold cavity of molded composite material, and described mould includes for compacting composite wood Material provides the formpiston of pressure and is used for the former of molding certain cross sectional bar, described silk section is thrown in Entering in described former, close formpiston;
S3. heating after mold: will assembling after mould be placed in heating mantle be heated to resin melting, resin With press ram, described formpiston is pressed into described former after being completely melt;
S4. the demoulding: mold to required specification and stop heating and keep the pressure molded, be cooled to Pressure relief after resin is firmly solid, the then demoulding.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 1 Type method, it is characterised in that: in S1 the quantity of resin monofilament according to resin required in composite with The ratio-dependent of continuous fiber.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 1 Type method, it is characterised in that: in determining S1 on the premise of resin and continuous fiber ratio, in S2 The quality of described silk section is multiplied by its volume equal to the density of composite product to be produced, adds The volatile matter of 3%~5%, the loss of burr.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 1 Type method, it is characterised in that: on the premise of the density determining forming composite and volume specification, Press ram molded composite material extremely required specification in 2s-4s in S3, and pressurize is hard to resin Gu.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 1 Type method, it is characterised in that: the heating-up temperature in S3 from room temperature gradually rise to described melting point resin with Upper 25 DEG C~40 DEG C, and 25 DEG C~40 DEG C insulation to resins are completely melt more than described melting point resin.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 5 Type method, it is characterised in that: the heating-up temperature in S3 from room temperature gradually rise to described melting point resin with Upper 30 DEG C, and 30 DEG C of insulation to resins are completely melt more than described melting point resin.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 1 Type method, it is characterised in that: before S2 puts into silk section, mold cavity wall is arranged exhaust groove or Steam vent.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 1 Type method, it is characterised in that: described resin monofilament is polyether-ether-ketomonofilament monofilament, nylon 6 monofilament or polyphenylene sulfide Ether monofilament.
The one-tenth of a kind of continuous fiber reinforced thermoplastic resin based composites the most according to claim 1 Type method, it is characterised in that: described continuous fiber tow be carbon fiber, glass fibre, aramid fiber, Boron fibre or polyester fiber is therein a kind of or wherein any two or more fiber combinations.
CN201410116105.3A 2014-03-26 2014-03-26 A kind of forming method of continuous fiber reinforced thermoplastic resin based composites Active CN103817956B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410116105.3A CN103817956B (en) 2014-03-26 2014-03-26 A kind of forming method of continuous fiber reinforced thermoplastic resin based composites

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410116105.3A CN103817956B (en) 2014-03-26 2014-03-26 A kind of forming method of continuous fiber reinforced thermoplastic resin based composites

Publications (2)

Publication Number Publication Date
CN103817956A CN103817956A (en) 2014-05-28
CN103817956B true CN103817956B (en) 2016-09-14

Family

ID=50753375

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410116105.3A Active CN103817956B (en) 2014-03-26 2014-03-26 A kind of forming method of continuous fiber reinforced thermoplastic resin based composites

Country Status (1)

Country Link
CN (1) CN103817956B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104325664B (en) * 2014-08-28 2016-09-14 航天精工股份有限公司 A kind of preparation method of continuous fiber polymer matrix composites securing member
CN104708835A (en) * 2014-11-06 2015-06-17 上海复合材料科技有限公司 RTM (resin transfer molding) molding method for carbon-fibre composite complex grid structure
CN104669630A (en) * 2015-02-10 2015-06-03 同济大学 Polyphenylene sulfide/carbon fiber cospun fabric and mold pressing molding method thereof
JP6807854B2 (en) * 2015-03-10 2021-01-06 ファイバ リーインフォースト サーモプラスティックス ベー.フェー. Fiber reinforced composite
CN106496744B (en) * 2016-10-31 2019-09-13 北京汽车集团有限公司 A kind of thermoplasticity carbon fibre composite and preparation method thereof
CN107557956B (en) * 2017-09-12 2021-01-05 江苏澳盛复合材料科技有限公司 Carbon fiber cloth

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101134368A (en) * 2006-08-30 2008-03-05 航天材料及工艺研究所 Thermoplasticity composite sheet material winded with composite fiber and technique of preparing the same

Also Published As

Publication number Publication date
CN103817956A (en) 2014-05-28

Similar Documents

Publication Publication Date Title
CN103817956B (en) A kind of forming method of continuous fiber reinforced thermoplastic resin based composites
US2948649A (en) Method of manufacturing sections and rods of glass fibre-reinforced plastic
DE60110937T2 (en) NOT ISOTHERMIC METHOD FOR PRODUCING HOLLOWED COMPONENTS
CN101870172B (en) Preparation mould of carbon fiber composite material casing of airplane and aircraft and forming method thereof
CN1404978A (en) Method for producing crank of bicycle
JP5460821B2 (en) Applicable blade
CN105003753B (en) About the thermoplastic pipe and production method of continuous lod
CN101728036B (en) Method for preparing solid core rod of one-step molded high-voltage composite insulator
TW201540468A (en) Continuous production of complex profiles having sandwich structure with foam cores in the pul-press process and Pul-shape process
KR20150024841A (en) Pul-core method with a pmi foam core
CN204955474U (en) Solidification equipment behind hollow section bar of pultrusion combined material
CN109624198A (en) A kind of fiber cloth composite material forming method
CN102615840A (en) Production equipment and using method for thermoplastic pultrusion product
CN106515041A (en) Three-dimensional printing forming method of long fiber thermoplastic composite material component
CN208469107U (en) A kind of foam core thin multilayer composite material tube rod part tinuous production
CN104693591A (en) Continuous fiber reinforced thermoplastic resin composite material safety-shoe protective toecap and preparation method thereof
CN110077013A (en) Continue the composite material and its method of fibre three-dimensional braiding manufacture using preimpregnation glue connection
CN109228399A (en) A kind of integral formation method of same with thermosetting compound material chopped strand and continuous fiber
Joshi The pultrusion process for polymer matrix composites
CN108327319A (en) A kind of fiberglass pultrusion progressive solution pre-shaping device and method
CN104723583A (en) Equipment and method for preparing composite material, Z-pin, by using electronic beam curing technology
US6007655A (en) Apparatus for and method of producing thick polymeric composites
CN205836107U (en) Pultrusion tubing
CN202507548U (en) Composite material pull-extrusion molding solidification equipment
CN105531101B (en) The manufacturing method of fiber reinforcement component

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant