CN108395671A - A kind of PEEK composite material and its manufacturing methods - Google Patents
A kind of PEEK composite material and its manufacturing methods Download PDFInfo
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- CN108395671A CN108395671A CN201810049735.1A CN201810049735A CN108395671A CN 108395671 A CN108395671 A CN 108395671A CN 201810049735 A CN201810049735 A CN 201810049735A CN 108395671 A CN108395671 A CN 108395671A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
-
- 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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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
- D06M15/41—Phenol-aldehyde or phenol-ketone resins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
Abstract
The present invention provides a kind of manufacturing method of PEEK composite materials, and this approach includes the following steps：Step 1：Broaden carbon fiber carbon filament；Step 2：PEEK aqueous liquid dispersions are prepared, the carbon filament after broadening described in step 1 presoaks in the dispersion liquid and dries to obtain preimpregnation carbon filament；Step 3：Preimpregnation carbon filament described in milling step 2 obtains carbon fibre initial rinse unidirectional cloth；Step 4：Laying is carried out with the preimpregnation unidirectional cloth described in step 3；Step 5：Ply angles obtained by step 4 are put into mold and are molded, PEEK composite materials are obtained.
Description
Technical field
The present invention relates to a kind of manufacturing method of high performance thermoplastic PEEK composite materials and the PEEK being prepared
Composite material.
Background technology
Polyether-ether-ketone (PEEK) is aromatics high polymer of new generation heat-resist, that intensity is high, before having wide application
Scape.The hemicrystalline high polymer of crystalline texture is strongly depend on as a kind of performance, due to the benzene containing rigidity on macromolecular chain
Ring, ehter bond flexible and the carbonyl for improving intermolecular force, PEEK compound with regular structure have high-fire resistance, high intensity, Gao Mo
The excellent comprehensive performances such as amount, high tenacity, processing performance be good.PEEK was initially succeeded in developing simultaneously by Britain's ICI Company in 1977
In 1980, the formal high performance engineering plastics for investing market, were mainly used for national defense industry the eighties, nearly ten years, PEEK and its
The application of composite material is extended to fields such as electronics, automobile, medical instruments rapidly.
PEEK can enhance the matrix of thermoplasticity prepreg as glass fibre, carbon fiber or aramid fiber, it is excellent
Mechanical property and moulding processability make can alternative metals and thermosetting in aerospace, ocean, medical treatment and commercial Application
Property plastics.Include dry fabric, multi-axial fabric, braided fabric, tow, unidirectional cloth, list by the PEEK composite products being modified
To piece etc..
Bottleneck prepared by PEEK composite materials is to presoak, and carbon fibre material is presoaked in PEEK prepreg solutions and obtains PEEK
Modified carbon fibre material is known, but the tensile strength of PEEK composite materials made from conventional prepreg method, drawing at present
It is less desirable to stretch the performances such as modulus, bending strength, bending modulus, impact strength, using T700 carbon filaments as made of raw material
For PEEK presoaks unidirectional cloth and composite material, 0 ° of tensile strength of preimpregnation unidirectional cloth of 800/mm density is 2600Mpa, is stretched
Modulus is 139Gpa, bending strength 2254Mpa, bending modulus 131Gpa, unidirectional cloth with 0 °, 30 °, 60 °, 90 °, 120 °,
150 °, 180 ° ... 360 ° of direction carries out the carbon fibre composite that laying obtains, and adds every 10 ° of samplings between 0-180 °
Work is about 800-1100Mpa at the tensile strength of stretch bending and impact batten, stretch modulus 40-50Gpa, and bending strength is
800-900Mpa, bending modulus 40-50Gpa, impact strength 18-19KJ/m2。
The purpose of the present invention is the improvement by process, obtain the PEEK composite materials of every excellent mechanical.
Invention content
The PEEK that the present invention provides a kind of manufacturing method of high performance thermoplastic PEEK composite materials and is prepared
Composite material.This approach includes the following steps：
Step 1：Broaden carbon fiber carbon filament；
Step 2：PEEK aqueous liquid dispersions are prepared, the carbon filament after broadening described in step 1 is presoaked and dried in the dispersion liquid
It is dry to obtain preimpregnation carbon filament；
Step 3：Preimpregnation carbon filament described in milling step 2 obtains carbon fibre initial rinse unidirectional cloth；
Step 4：Laying is carried out with the preimpregnation unidirectional cloth described in step 3；
Step 5：Ply angles obtained by step 4 are put into mold and are molded, PEEK composite materials are obtained；
It is characterized in that：In the step 1, carbon fiber carbon filament is stretched to 700-900 roots/millimeter；In the step 2,
The surface tension of the PEEK aqueous liquid dispersions of preparation is in 20dyn/cm hereinafter, viscosity is 1800-2000CPS；In the step 3,
The number of rolling is 1-3 times；In the step 4, when laying each layer be different angle staggeredly.
Further, step 3 further includes the preimpregnation unidirectional cloth described in cut portion step 3, is compiled into plain weave broadening preimpregnation
Woven cloth；Step 4 further include by described in step 3 preimpregnation unidirectional cloth and plain weave broadening preimpregnation woven cloth carry out mixing laying；
Preferably, dispersion liquid used by the step 2 is ultra-pure water；
Preferably, when presoaking unidirectional cloth and plain weave broadening preimpregnation woven cloth mixes laying, unidirectional cloth and plain weave exhibition are presoaked
Wide preimpregnation woven cloth is with 1:1-3：1 ratio mixes laying；It is highly preferred that preimpregnation unidirectional cloth and plain weave broadening preimpregnation woven cloth with
5:2 ratio mixes laying, and ply angles unit is：3 layers of unidirectional cloth/2 layers of 1 layer/unidirectional cloth of preimpregnation woven cloth/preimpregnation braiding
1 layer of cloth.
Preferably, in laying, the angle of each unidirectional layer of cloth originates the step 4 from 0 degree, as unit of 30-45 degree, respectively
Layer successively incrementally arrange by constant amplitude.
The present invention is as follows to the improved principle of PEEK composite technologies：
The Degree of Accord Relation of broadening is rolled to step 3, it has been found that and when 700/mm, rolls 1 time and disclosure satisfy that requirement, and
700/mm is often further added by 100/mm, and the operation of rolling need to be further added by once, and the operation of rolling is more than 3 times, carbon fiber wire can because
Rolling repeatedly causes fatigue fracture, PEEK resins also to degrade caused by the effect in high temperature, in addition, it has been found that carbon fiber
It, can be because though PEEK dispersion liquids can be in advance dipped into the gap in carbon fiber wire well when density is less than or equal to 600/mm
To be broken under the action of high temperature and draught pressure, this is because 600/mm carbon fibers are excessive rarefied, draught pressure meeting
Certain rolling stress is generated, the cooling meeting after high temperature and rolling is because of the greatest differences of PEEK and the carbon fiber thermal coefficient of expansion, production
Heat stress, when thermal stress and rolling stress are more than the intensity of material itself in time, carbon fiber will be broken.Therefore,
For synthesis, select 700-900 roots/millimeter that can realize preferable effect.
Step is presoaked for step 2, we select water-borne dispersions surface tension to be less than or equal to 20dyn/cm, dispersion liquid
Body viscosity is 1800-2000CPS, and excessively high surface tension of liquid can make dispersion liquid be dispersed in carbon fiber surface at droplet shape, and
It cannot be completely impregnated with carbon fiber broadening silk, i.e., can not be evenly distributed in the hole of carbon fiber.The liquid of PEEK dispersion liquids is viscous
Degree is more than 2000cps, and carbon fiber is by that can carry excessive PEEK dispersion liquids when PEEK dispersion liquids, as the excessive shadow of viscosity
Ring the immersion of PEEK dispersion liquids；The liquid viscosity of PEEK dispersion liquids is less than 1800cps, dipping of the PEEK dispersion liquids to carbon fiber
Performance improvement, but PEEK particles become proper sedimentation because of the decline of viscosity in PEEK dispersion liquids, influence PEEK powder and are disperseing
The uniformity being distributed in liquid causes final products PEEK and carbon fiber dimensional ratio unstable.
For the mixing laying of step 4, it is single to have critically important influence, conventional method to the mechanical property of final products
Laying is arranged according to certain angle to cloth, the present invention in unidirectional cloth ply angles by being added a certain proportion of plain weave
Cloth, and Dagwood structure is made according to special ratios, keep the mechanical property of final products, especially impact strength apparent
Better than existing procucts.
The present invention especially manufactures in link unidirectional cloth by the improvement to PEEK composite technologies, carbon filament broadening
Degree, and the selection to PEEK prepreg solutions surface tension, viscosity, and the selection to rolling number so that PEEK obtained
The porosity of unidirectional cloth, PEEK degradation rates and every mechanical property are obviously improved, and based on this PEEK unidirectional cloth, are led to
Cross the selection of the research to ply angles and angle so that the mechanical property of finally obtained PEEK composite materials, especially anti-impact
Hit intensity is substantially better than existing procucts.
Specific implementation mode
Embodiment 1
The manufacture of carbon fiber wire
Take the broadening equipment broadening of T700 carbon fiber carbon filaments to 700 every millimeter.
Embodiment 2
The manufacture of carbon fiber wire
Take the broadening equipment broadening of T700 carbon fiber carbon filaments to 800 every millimeter.
Embodiment 3
The manufacture of carbon fiber wire
Take the broadening equipment broadening of T700 carbon fiber carbon filaments to 900 every millimeter.
Embodiment 4
The manufacture of carbon fiber wire
Take the broadening equipment broadening of T700 carbon fiber carbon filaments to 600 every millimeter.
Embodiment 5
The manufacture of carbon fiber wire
Take the broadening equipment broadening of T700 carbon fiber carbon filaments to 1000 every millimeter.
Embodiment 6
The preparation of prepreg solution
PEEK powder is taken to be distributed in ultra-pure water；Biological grade dispersant is added in water makes mixed water-borne dispersions surface
Tension is equal to 20dyn/cm, and dispersion liquid viscosity is 1900CPS, solid content 32%.
Embodiment 7
The preimpregnation and rolling of carbon fiber wire
Carbon fiber wire after the broadening of Example 1 takes out after being presoaked in the PEEK water-borne dispersions of embodiment 6, passes through height
It is rolled once after warm baking oven drying, wherein preimpregnation speed 0.8m/min, 385 DEG C of high temperature oven temperature, carbon filament stops 7 in an oven
Minute, draught pressure 30N/mm.PEEK carbon fibre initial rinse unidirectional cloths are made.
Embodiment 8
The preimpregnation and rolling of carbon fiber wire
Carbon fiber wire after the broadening of Example 2 takes out after being presoaked in the PEEK water-borne dispersions of embodiment 7, passes through height
Roll secondary after the drying of warm baking oven, wherein preimpregnation speed 0.8m/min, 385 DEG C of high temperature oven temperature, carbon filament stops 7 in an oven
Minute, draught pressure 30N/mm.PEEK carbon fibre initial rinse unidirectional cloths are made.
Embodiment 9
The preimpregnation and rolling of carbon fiber wire
Carbon fiber wire after the broadening of Example 3 takes out after being presoaked in the PEEK water-borne dispersions of embodiment 6, passes through height
It is rolled three times after warm baking oven drying, wherein preimpregnation speed 0.8m/min, 385 DEG C of high temperature oven temperature, carbon filament stops 7 in an oven
Minute, draught pressure 30N/mm.PEEK carbon fibre initial rinse unidirectional cloths are made.
Embodiment 10
The preimpregnation and rolling of carbon fiber wire
Carbon fiber wire after the broadening of Example 4 takes out after being presoaked in the PEEK water-borne dispersions of embodiment 6, passes through height
It is rolled once after warm baking oven drying, wherein preimpregnation speed 0.8m/min, 385 DEG C of high temperature oven temperature, carbon filament stops 7 in an oven
Minute, draught pressure 30N/mm.PEEK carbon fibre initial rinse unidirectional cloths are made.
Embodiment 11
The preimpregnation and rolling of carbon fiber wire
Carbon fiber wire after the broadening of Example 5 takes out after being presoaked in the PEEK water-borne dispersions of embodiment 6, passes through height
It is rolled four times after warm baking oven drying, wherein preimpregnation speed 0.8m/min, 385 DEG C of high temperature oven temperature, carbon filament stops 7 in an oven
Minute, draught pressure 30N/mm.PEEK carbon fibre initial rinse unidirectional cloths are made.
PEEK carbon fibre initial rinse unidirectional cloth performance comparisons obtained by embodiment 7-11
| Embodiment 10 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 11 | |
| Fibre density | 600/mm | 700/mm | 800/mm | 900/mm | 1000/mm |
| Roll number | 1 | 1 | 2 | 3 | 4 |
| Porosity % | 0.1 | 0.15 | 0.15 | 0.2 | 0.3 |
| Rate of fiber breakage % | 5% | 2% | 2% | 2% | 5% |
| PEEK degradation rates % | 0.1 | 0.1 | 0.3 | 0.42 | 1.34 |
| 0 ° of tensile strength Mpa | 2560 | 2950 | 3140 | 2922 | 2440 |
| 0 ° of stretch modulus Gpa | 136 | 138 | 145 | 137 | 136 |
| 0 ° of bending strength Mpa | 2100 | 2450 | 2470 | 2340 | 2100 |
| 0 ° of bending die degree Gpa | 113 | 138 | 144 | 134 | 113 |
Embodiment 12
Laying and molding (single laying)
Take the unidirectional cloth presoaked with 0 °, 30 °, 60 °, 90 °, 120 °, 150 °, 180 ° ... 360 ° of direction is spread
Layer spreads 200 layers, is then placed in mold and is molded altogether, and from room temperature, heating rate is 12 DEG C/min, warming-up section pressure
0.7Mpa, pressurize 10min after being raised to 380 DEG C, pressure 1.5Mpa, then cool to 150 DEG C of taking-ups, and cooling rate is 3.5 DEG C/
Min, cooling pressurize 4Mpa.
Embodiment 13
Laying and molding (mixing laying)
It takes the unidirectional cloth presoaked to cut into the preimpregnation unidirectional cloth of 15mm wide, is then woven into plain weave broadening preimpregnation braiding
Cloth and original preimpregnation unidirectional cloth carry out mixing laying, and ply angles unit is：3 layers of unidirectional cloth/1 layer of preimpregnation woven cloth/unidirectional
The angular displacement of 2 layers of cloth/1 layer of preimpregnation woven cloth, unidirectional layer of cloth spreads 200 layers, is then placed in mold and carries out altogether with embodiment 12
Molding, from room temperature, heating rate is 12 DEG C/min, warming-up section pressure 0.7Mpa, pressurize 10min, pressure after being raised to 380 DEG C
1.5Mpa, then cools to 150 DEG C of taking-ups, and cooling rate is 3.5 DEG C/min, cooling pressurize 4Mpa.
Embodiment 14
Laying and molding (mixing laying)
It takes the unidirectional cloth presoaked to cut into the preimpregnation unidirectional cloth of 15mm wide, is then woven into plain weave broadening preimpregnation braiding
Cloth and original preimpregnation unidirectional cloth carry out mixing laying, and ply angles unit is：3 layers of unidirectional cloth/1 layer of preimpregnation woven cloth, unidirectionally
The angular displacement of layer of cloth spreads 200 layers, is then placed in mold and is molded, from room temperature, heating rate altogether with embodiment 12
It then cools to 150 DEG C for 12 DEG C/min, warming-up section pressure 0.7Mpa, pressurize 10min after being raised to 380 DEG C, pressure 1.5Mpa and takes
Go out, cooling rate is 3.5 DEG C/min, cooling pressurize 4Mpa.
Embodiment 15
Laying and molding (mixing laying)
It takes the unidirectional cloth presoaked to cut into the preimpregnation unidirectional cloth of 15mm wide, is then woven into plain weave broadening preimpregnation braiding
Cloth and original preimpregnation unidirectional cloth carry out mixing laying, and ply angles unit is：1 layer of unidirectional cloth/1 layer of preimpregnation woven cloth, unidirectionally
The angular displacement of layer of cloth spreads 200 layers, is then placed in mold and is molded, from room temperature, heating rate altogether with embodiment 12
For 20 DEG C/min, warming-up section pressure 4Mpa, pressurize 5 minutes after being raised to 380 DEG C, then pressure 3Mpa cools to 250 DEG C, cooling
Rate 25 DEG C/min, pressure 6Mpa then proceed to cool to 100 DEG C, 1.5 DEG C/min of rate of temperature fall, and pressure 10Mpa takes out.
Embodiment 16
Product properties compares
Carbon fiber made from embodiment 12-15/PEEK composite resin contents are 35-37% (weight ratio), and density is
1.54-1.56g/cm2, porosity is less than 1%, and meets the associated specifications such as biocompatibility, 350*350*10mm's
On model, stretch bending and impact batten are processed into every 10 ° of samplings between 0-180 °.
Note：The above performance test is tested under 23 DEG C, 50% humidity environment；Wherein extension test according to ASTM D3039,
Crooked test is according to ASTM D790；Shock-testing standard No. ISO180/A, jagged impact
Analysis of experimental results：
It is analyzed by result above it is found that presoaking the molding of carbon fiber wire unidirectional cloth laying by PEEK prepared by present invention process
Or the properties of laying molding PEEK composite products obtained are mixed with woven cloth and are significantly better than that the ginseng of the prior art
Number, wherein PEEK composite products made from 13 laying method of embodiment are keeping tensile strength, stretch modulus, bending strong
In the case of the excellent in mechanical performance such as degree, bending modulus, impact strength is also significantly higher than the system of other several ply sequences
Product, therefrom it was found that in mixing laying, the increase of woven cloth ratio, the impact strength of product is not linear to be become
Change, but in the woven cloth ratio of embodiment 13, it is optimal performance, therefore, embodiment 13 is the optimal implementation of the present invention
Mode.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (6)
1. a kind of manufacturing method of PEEK composite materials, this approach includes the following steps：
Step 1：Broaden carbon fiber carbon filament；
Step 2：PEEK aqueous liquid dispersions are prepared, the carbon filament after broadening described in step 1 is presoaked and dried in the dispersion liquid
To preimpregnation carbon filament；
Step 3：Preimpregnation carbon filament described in milling step 2 obtains carbon fibre initial rinse unidirectional cloth；
Step 4：Laying is carried out with the preimpregnation unidirectional cloth described in step 3；
Step 5：Ply angles obtained by step 4 are put into mold and are molded, PEEK composite materials are obtained；
It is characterized in that：In the step 1, carbon fiber carbon filament is stretched to 700-900 roots/millimeter；In the step 2, prepare
PEEK aqueous liquid dispersions surface tension in 20dyn/cm hereinafter, viscosity be 1800-2000CPS；In the step 3, rolling
Number be 1-3 times；In the step 4, when laying each layer be different angle staggeredly.
2. manufacturing method as described in claim 1, which is characterized in that step 3 further includes the preimpregnation described in cut portion step 3
Unidirectional cloth is compiled into plain weave broadening preimpregnation woven cloth；Step 4 further include by described in step 3 preimpregnation unidirectional cloth and plain weave broadening
Preimpregnation woven cloth carries out mixing laying.
3. manufacturing method as described in claim 1, which is characterized in that dispersion liquid used by the step 2 is ultra-pure water.
4. manufacturing method as described in claim 1, which is characterized in that the step 4 is in laying, the angle of each unidirectional layer of cloth
It is originated from 0 degree, as unit of 30-45 degree, each layer successively incrementally arrange by constant amplitude.
5. manufacturing method as described in claim 1 or 4, which is characterized in that when preimpregnation unidirectional cloth and plain weave broadening preimpregnation braiding
When cloth mixes laying, unidirectional cloth and plain weave broadening preimpregnation woven cloth are presoaked with 1:1-3：1 ratio mixes laying.
6. manufacturing method as claimed in claim 5, which is characterized in that preimpregnation unidirectional cloth and plain weave broadening preimpregnation woven cloth are with 5:
2 ratio mixes laying, and ply angles unit is：3 layers of unidirectional cloth/2 layers of 1 layer/unidirectional cloth of preimpregnation woven cloth/preimpregnation woven cloth
1 layer.
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|---|---|---|---|---|
| CN111361179A (en) * | 2020-03-30 | 2020-07-03 | 西安交通大学 | Thermoplastic composite material forming process suitable for complex large curvature |
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