CN109269855A - A kind of preparation method of fiber C precast body mechanical property sample - Google Patents
A kind of preparation method of fiber C precast body mechanical property sample Download PDFInfo
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- CN109269855A CN109269855A CN201811229437.7A CN201811229437A CN109269855A CN 109269855 A CN109269855 A CN 109269855A CN 201811229437 A CN201811229437 A CN 201811229437A CN 109269855 A CN109269855 A CN 109269855A
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- materialogy
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- 239000000835 fiber Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000011229 interlayer Substances 0.000 claims abstract description 39
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- 238000012512 characterization method Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000007598 dipping method Methods 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 48
- 239000010410 layer Substances 0.000 claims description 29
- 239000004744 fabric Substances 0.000 claims description 23
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 20
- 239000005011 phenolic resin Substances 0.000 claims description 20
- 229920001568 phenolic resin Polymers 0.000 claims description 20
- 235000019441 ethanol Nutrition 0.000 claims description 18
- 239000000047 product Substances 0.000 claims description 16
- 239000011265 semifinished product Substances 0.000 claims description 12
- 238000004132 cross linking Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000007605 air drying Methods 0.000 claims description 7
- 238000012372 quality testing Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 5
- 238000005470 impregnation Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000000805 composite resin Substances 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 235000002639 sodium chloride Nutrition 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001722 carbon compounds Chemical class 0.000 description 2
- 238000002803 maceration Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- RCHKEJKUUXXBSM-UHFFFAOYSA-N n-benzyl-2-(3-formylindol-1-yl)acetamide Chemical compound C12=CC=CC=C2C(C=O)=CN1CC(=O)NCC1=CC=CC=C1 RCHKEJKUUXXBSM-UHFFFAOYSA-N 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011160 polymer matrix composite Substances 0.000 description 1
- 229920013657 polymer matrix composite Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
Abstract
A kind of preparation method of fiber C precast body mechanical property sample, fiber C precast body sample blank is processed into the precast body mechanical property sample of the fiber C reinforced resin based composites with rigidity characteris using resin dipping, cured method, and gained prefabricated component is cold worked, respectively obtain tensile sample, materialogy characterization sample and interlayer shear sample.By obtained each sample, every mechanical property characterization in addition to compressive strength can be carried out, and have same or similar technical indicator with C/C composite material, realize in 1~2 day time and quality conformance detection is carried out to the mechanical property of each sample raw material.
Description
Technical field
The present invention relates to a kind of mechanical property preparation method of sample, are especially used for C/C composite preform mechanical property
The preparation method of energy sample
Background technique
Brake Discs For Aircraft Wheels are fiber C braiding precast body with the reinforcement of C/C composite material, and quality conformance is main
Depending on fiber C quality conformance, weaving, stabilization of equipment performance etc..Since fiber C precursor structure is more soft, currently
It is only capable of detecting its interior metal impurity or larger size defect by non-destructive testing technologies such as X-ray digital scan imagings, and nothing
Method carries out the related mechanics properties testing such as needling density, tensile strength, interlaminar shear strength.C/C composite material is compiled with fiber C
Knitting body is what precast body was prepared by chemical vapor deposition process, this technique duration is up to 4 months or more, production cost pole
It is high.Due to there is no available detection method to carry out quality to the fiber C precast body for C/C composite material wheel braking disk at this stage
Detection, if using underproof precast body carry out subsequent production and processing, will necessarily to the quality of product generate extreme influence and
It is difficult to detect and screening, economic loss caused by this kind of event will be inestimable, serious to will lead to aviation accident.
Summary of the invention
For fill up it is existing in the prior art still cannot be to the fiber C precast body for C/C composite material wheel braking disk
The deficiency of quality testing is carried out, the invention proposes a kind of preparation methods of fiber C precast body mechanical property sample.
Fiber C precast body mechanical property sample prepared by the present invention includes tensile sample, materialogy characterization sample and layer
Between shear sample, detailed process is:
Step 1, it samples., as raw material, to randomly select 3~5 wherein with a batch of fiber C precast body product
Quality testing is carried out as sample.The sample size should be greater than the contour dimension of blank, and in sample each layer laminated cloth with 90 °
It is staggeredly coated with, 90 ° of fiber of each layer laminated cloth is made to interlock；One layer of net tire has been plated between each layer laminated cloth.
Step 2, sample preparation.The sample of extraction is cut, tensile sample prefabricated component, materialogy characterization sample is respectively prepared
Prefabricated component and the sample prefabricated part of interlayer shear.
The tensile sample prefabricated component is dumbbell shaped, and quantity is 5.When making the tensile sample prefabricated component, make the drawing
Long side and the direction of laminated cloth fiber in the raw material for making the sample prefabricated part for stretching sample prefabricated part are parallel or vertical
Directly.5 tensile samples are taken respectively from each part with a batch of fiber C precast body product.
The materialogy characterize sample prefabricated part be it is rectangular, quantity is 5.When making material characterizes sample prefabricated part,
It is cut in the side surface that the materialogy characterizes sample prefabricated part, the surface of the sample prefabricated part made is perpendicular to for making this
Laying in the raw material of sample prefabricated part.It is prefabricated with a batch of fiber C that 5 tensile samples are taken respectively from each part
Body product.
The sample prefabricated part of interlayer shear is strip, and quantity is 15.When making the sample prefabricated part of the interlayer shear
Make there are 30 ° or 60 ° between the direction of laminated cloth fiber in the long side of the sample and the raw material for making the sample prefabricated part
Or 90 ° of angle, and each 5, sample of three kinds of different angles.15 sample prefabricated parts of interlayer shear are taken respectively from 5
Part is the same as a batch of fiber C precast body product.
Step 3, resin impregnates.By obtained tensile sample prefabricated component, materialogy characterization sample prefabricated component and interlayer shear
Sample prefabricated part immerses respectively carries out vacuum impregnation in the impregnating autoclave for filling phenolic resin ethanol solution；Impregnating autoclave vacuum degree is 1
± 0.05KPa, dip time are 3~5 hours, respectively obtain the tensile sample prefabricated component by resin dipping, materialogy characterization
Sample prefabricated component and the sample prefabricated part of interlayer shear.
In the phenolic resin ethanol solution of the resin dipping, phenolic resin: the mass percent of ethyl alcohol is 30%:
70%；
Step 4, sample air-dries.Sample is placed in the environment of aeration-drying after dipping and carries out air-dried, air-dry time
It is 3~5 hours；
Step 5, crosslinking curing, to by resin dipping tensile sample prefabricated component, materialogy characterization sample prefabricated component and
The sample prefabricated part of interlayer shear carries out crosslinking curing, obtains tensile sample semi-finished product, materialogy characterization sample semi-finished product and interlayer
Shear sample semi-finished product.
Heat treatment temperature is 165 ± 5 DEG C, and soaking time is 1.5~2.5 hours；
Step 6, sample finishes, and obtains tensile sample, materialogy characterization sample and interlayer shear sample.
It is the notch of 0.5mm that the upper and lower surfaces of the interlayer shear sample obtained after finishing have width respectively.Respectively
The distance between the center line in kerf width direction and the interlayer shear specimen length direction plane of symmetry are 3mm.It is each described
The depth of notch reaches the interlayer shear specimen height direction plane of symmetry.
In the processing method of mechanical property sample proposed by the present invention, in the preparation of each sample prefabricated part, fully consider
Relationship between each sample prefabricated part shape and raw material middle layer laminated cloth or laying, makes prepared tensile sample, material
It learns characterization sample and interlayer shear sample meets the Brake Discs For Aircraft Wheels C/C composite material matter in first time to preparation
The needs of consistency detection are measured, guarantee the qualification rate of C/C composite material wheel braking disk.
The present invention is using phenolic resin ethanol solution as maceration extract, and wherein Phenolic resin powder mass percent is 30%, work
Fiber C precast body sample blank to be checked is immersed in solution, then carries out crosslinking curing and cold by industry ethyl alcohol mass percent 70%
Processing, gained sample can carry out materialogy characterization and every mechanics properties testing.Wherein, materialogy characterization can be aobvious by optics
Micro mirror, the needling density of scanning electron microscope test sample, fiber distributing homogeneity, fibre diameter uniformity etc.；Mechanical property
It can then include tensile strength, bending strength, interlaminar shear strength etc..
The present invention uses for reference GB/T3354-2014, and " directional fiber enhances polymer matrix composite Erichsen test side
Method ", GB/T33501-2017 " carbon/carbon compound material Erichsen test method " and GB/T1450.1-2005 " fiber reinforcement plastic
Shear strength test method between the bed of material ", propose a kind of detection sample prepared for detecting fiber C precast body quality conformance
Method.
Fiber C precast body is to have again using fiber C as raw material by what the techniques such as braiding, weaving, needle thorn were prepared
The flexible body of miscellaneous structure, the present invention propose that fiber C precast body sample blank is processed into tool using resin dipping, cured method
There are the fiber C reinforced resin based composites of rigidity characteris, using for reference GB/T3354-2014, " it is multiple that directional fiber enhances polymer matrix
Condensation material Erichsen test method ", GB/T33501-2017 " carbon/carbon compound material Erichsen test method ", GB/
Sample ruler in the national standards such as T1450.1-2005 " shear strength test method between fiber-reinforced plastic layer " or other testing standards
Dipping gained blank is cold worked, it can be achieved that carrying out quality conformance inspection to it within 1~2 day time in very little related request
It surveys.It is maceration extract that the present invention, which selects phenolic resin ethanol solution, the resin have at low cost, dipping uniformly, curing process it is simple,
Curing time is short, dimensionally stable, it is almost not damaged to fiber C the features such as, sample prepared by the technique can be carried out except compression is strong
Every mechanical property characterization except degree, and have same or similar technical indicator with C/C composite material.
Detailed description of the invention
The precast body for being used to prepare C/C composite material wheel braking disk is that the fiber C produced using D refraction statics technique is compiled
Body is knitted, which is layer structure, and every layer is pierced by net tire and laminated cloth lamination needle, is still between layers by folded
The realization physical bond of layer needle-punching method.
Fig. 1 is the shape and size of dumbbell shaped tensile sample.
Fig. 2 is the sectional schematic diagram of materialogy characterization sample.
Fig. 3 is the front view and top view of interlayer shear sample.
Fig. 4 is flow chart of the invention.
In figure: 1. laminated cloths；2. net tire；3. notch.
Specific embodiment
The present invention relates to a kind of for detecting the preparation method of fiber C precast body mechanical property sample.The sample packet
Include tensile sample, materialogy characterization sample and interlayer shear sample.Preparation will be described in detail by three embodiments in the present invention
Detailed process.
Embodiment 1
The present embodiment is a kind of D refraction statics felt precast body method for preparing tensile sample, and detailed process is:
Step 1, it samples., as raw material, to randomly select 5 works wherein with a batch of fiber C precast body product
Quality testing is carried out for sample.The sample size should be greater than the contour dimension of blank, and in sample each layer laminated cloth 1 with 90 °
It is staggeredly coated with, 90 ° of fiber of each layer laminated cloth is made to interlock；One layer of net tire 2 has been plated between each layer laminated cloth.
Step 2, sample preparation.The sample of extraction is cut, tensile sample prefabricated component is made.
The tensile sample prefabricated component is dumbbell shaped, and quantity is 5.When making the tensile sample prefabricated component, make the drawing
Long side and the direction of laminated cloth fiber in the raw material for making the sample prefabricated part for stretching sample prefabricated part are parallel or vertical.
5 tensile sample prefabricated components are taken respectively from each part with a batch of fiber C precast body product.The tensile sample is prefabricated
The outer dimension of part is 128mm × 20mm × 9mm.
The materialogy made characterizes the surface of sample prefabricated part perpendicular to the raw material for making the sample prefabricated part
In laying.
Step 3, resin impregnates.Obtained tensile sample prefabricated component is immersed to the impregnating autoclave for filling phenolic resin ethanol solution
Middle carry out vacuum impregnation；Impregnating autoclave vacuum degree is 1 ± 0.05KPa, and dip time is 4 hours, obtains the drawing impregnated by resin
Stretch sample prefabricated part.
In the phenolic resin ethanol solution, phenolic resin: the mass percent of ethyl alcohol is 30%:70%.The phenolic aldehyde
Resin is the powdered resin of Zhejiang sea salt Hua Qiang Resins Corporation production, resin model 5160.
Step 4, sample is air-dried.Wind is carried out by being placed in the environment of aeration-drying by the tensile sample prefabricated component of dipping
It is dry, air-dry time 4h；
Step 5, crosslinking curing.It is solid that aerobic crosslinking is carried out in tensile sample prefabricated component merging heat-treatment furnace after air-drying
Change；Heat treatment temperature is 165 ± 5 DEG C, soaking time 2h.Obtain the tensile sample semi-finished product impregnated by resin.
Step 6, it finishes.Plus, the tensile sample semi-finished product after air-drying are finished by drawing, are drawn by machine
Stretch sample.
The outer dimension of the tensile sample prefabricated component is 120mm × 12mm × 6mm.
Embodiment 2,
The present embodiment is a kind of preparation method for materialogy characterization sample, and detailed process is:
Step 1, it samples., as raw material, to randomly select 5 works wherein with a batch of fiber C precast body product
Quality testing is carried out for sample.The sample size should be greater than the contour dimension of blank, and each layer laminated cloth is handed in sample with 90 °
Mistake is coated with, and 90 ° of fiber of each layer laminated cloth is made to interlock；One layer of net tire has been plated between each layer laminated cloth.
Step 2, sample preparation.The sample of extraction is cut, materialogy is made and characterizes sample prefabricated part.
The materialogy characterize sample prefabricated part be it is rectangular, quantity is 5.When making material characterizes sample prefabricated part,
It is cut in the side surface of the sample, the materialogy made characterizes the surface of sample prefabricated part perpendicular to pre- for making the sample
Laying in the raw material of product.5 tensile samples are taken respectively from each part with a batch of fiber C precast body product.
The outer dimension that the materialogy characterizes sample prefabricated part is 20mm × 20mm × 5mm.
Step 3, resin impregnates.Obtained materialogy is characterized into sample prefabricated part immersion and fills phenolic resin ethanol solution
Vacuum impregnation is carried out in impregnating autoclave；Impregnating autoclave vacuum degree is 1 ± 0.05KPa, and dip time is 3 hours, obtains soaking by resin
The materialogy of stain characterizes sample prefabricated part.
In the phenolic resin ethanol solution of the resin dipping, phenolic resin: the mass percent of ethyl alcohol is 30%:
70%.The phenolic resin is the powdered resin of Zhejiang sea salt Hua Qiang Resins Corporation production, resin model 5160.
Step 4, sample air-dries.The environment that sample prefabricated part is placed in aeration-drying will be characterized by the materialogy of resin dipping
In carry out it is air-dried, air-dry time be 3 hours；
Step 5, crosslinking curing.Materialogy after air-drying is characterized in sample prefabricated part merging heat-treatment furnace and carries out aerobic friendship
Connection solidification；Heat treatment temperature is 165 ± 5 DEG C, and soaking time is 1.5 hours；Obtain materialogy characterization sample semi-finished product.
Step 6, it finishes.The materialogy characterization sample semi-finished product after air-drying are finished by drawing, obtain material
Learn characterization sample.
The outer dimension of the materialogy characterization sample is 15mm × 15mm × 3mm.
Embodiment 3,
The present embodiment is a kind of preparation method of interlayer shear sample.
Sample preparation
Step 1, it samples., as raw material, to randomly select 3~5 wherein with a batch of fiber C precast body product
Quality testing is carried out as sample.The sample size should be greater than the contour dimension of blank, and in sample each layer laminated cloth with 90 °
It is staggeredly coated with, 90 ° of fiber of each layer laminated cloth is made to interlock；One layer of net tire has been plated between each layer laminated cloth.
Step 2, sample preparation.The sample of extraction is cut, the sample prefabricated part of interlayer shear is made.
The sample prefabricated part of interlayer shear is strip, quantity 15.Make when making the sample prefabricated part of the interlayer shear
The long side of the sample prefabricated part of the interlayer shear and the direction for making the laminated cloth fiber in the raw material of the sample prefabricated part
Between have the angles of 30 ° or 60 ° or 90 °, and the sample prefabricated part of interlayer shear each 5 of three kinds of different angles.The layer
Between shear sample prefabricated part outer dimension be 38mm × 23mm × 6mm.
Step 3, resin impregnates.The obtained sample prefabricated part of shearing is immersed to the impregnating autoclave for filling phenolic resin ethanol solution
Middle carry out vacuum impregnation；Impregnating autoclave vacuum degree is 1 ± 0.05KPa, and dip time is 3 hours, obtains cutting by what resin impregnated
Cut sample prefabricated part.
In the phenolic resin ethanol solution of the resin dipping, phenolic resin: the mass percent of ethyl alcohol is 30%:
70%.The phenolic resin is the powdered resin of Zhejiang sea salt Hua Qiang Resins Corporation production, resin model 5160.
Step 4, sample air-dries.It is carried out being placed in the environment of aeration-drying by the sample prefabricated part of shearing of resin dipping
It air-dries, air-dry time is 5 hours；
Step 5, crosslinking curing.It is solid by aerobic crosslinking is carried out in the sample prefabricated part merging heat-treatment furnace of the shearing after air-drying
Change；Heat treatment temperature is 165 ± 5 DEG C, and soaking time is 2.5 hours；Obtain shearing sample semi-finished product.
Step 6, it finishes.The shearing sample semi-finished product after air-drying are finished by drawing, obtain shearing sample.
It is the notch 3 of 0.5mm that the upper and lower surfaces of the interlayer shear sample have width respectively.Each kerf width side
To center line and the distance between the interlayer shear specimen length direction plane of symmetry be 3mm.The depth of each notch
Reach the interlayer shear specimen height direction plane of symmetry.
The outer dimension of the interlayer shear sample is 30mm × 15mm × 3.5mm.
The preparation process of three specific embodiments proposed by the present invention is identical.The preparation parameter of each embodiment are as follows:
Claims (8)
1. a kind of preparation method of fiber C precast body mechanical property sample, prepared fiber C precast body mechanical property sample packet
Include tensile sample, materialogy characterization sample and interlayer shear sample；It is characterized in that, detailed process is:
Step 1, it samples:, as raw material, to randomly select 3~5 conducts wherein with a batch of fiber C precast body product
Sample carries out quality testing；The sample size should be greater than the contour dimension of blank, and each layer laminated cloth is interlocked in sample with 90 °
It is coated with, 90 ° of fiber of each layer laminated cloth is made to interlock；One layer of net tire has been plated between each layer laminated cloth；
Step 2, sample preparation: cutting the sample of extraction, and it is sample prefabricated that tensile sample prefabricated component, materialogy characterization is respectively prepared
Part and the sample prefabricated part of interlayer shear；
Step 3, resin impregnates: by obtained tensile sample prefabricated component, materialogy characterization sample prefabricated component and interlayer shear sample
Prefabricated component immerses respectively carries out vacuum impregnation in the impregnating autoclave for filling phenolic resin ethanol solution；Impregnating autoclave vacuum degree be 1 ±
0.05KPa, dip time are 3~5 hours, respectively obtain the tensile sample prefabricated component by resin dipping, materialogy characterization sample
Product prefabricated component and the sample prefabricated part of interlayer shear；
Step 4, sample air-dries: to tensile sample prefabricated component, materialogy characterization sample prefabricated component and the interlayer by resin dipping
Sample prefabricated part is sheared to air-dry；
Step 5, crosslinking curing；To tensile sample prefabricated component, materialogy characterization sample prefabricated component and the interlayer by resin dipping
It shears sample prefabricated part and carries out crosslinking curing, obtain tensile sample semi-finished product, materialogy characterization sample semi-finished product and interlayer shear
Sample semi-finished product；
Step 6, it finishes, obtains tensile sample, materialogy characterization sample and interlayer shear sample.
2. the preparation method of fiber C precast body mechanical property sample as described in claim 1, which is characterized in that the stretching examination
Sample prefabricated component is dumbbell shaped, and quantity is 5；When making the tensile sample prefabricated component, make the long side of the tensile sample prefabricated component
It is parallel or vertical with the direction of laminated cloth fiber in the raw material for making the sample prefabricated part；5 stretchings examination
Sample is taken respectively from each part with a batch of fiber C precast body product.
3. the preparation method of fiber C precast body mechanical property sample as described in claim 1, which is characterized in that the materialogy
Characterize sample be it is rectangular, quantity be 5；When making material characterizes sample prefabricated part, sample prefabricated part is characterized in the materialogy
Side surface cut, the surface of the sample prefabricated part made is perpendicular to the paving in the raw material for making the sample prefabricated part
Layer；5 tensile samples are taken respectively from each part with a batch of fiber C precast body product.
4. the preparation method of fiber C precast body mechanical property sample as described in claim 1, which is characterized in that the interlayer is cut
Cutting sample is strip, and quantity is 15；When making the sample prefabricated part of the interlayer shear, make the long side of the sample and for making
There are the angle of 30 ° or 60 ° or 90 °, and three kinds of differences in the raw material of the sample prefabricated part between the direction of laminated cloth fiber
Each 5, the sample of angle；15 tensile samples are taken respectively from 5 with a batch of fiber C precast body product.
5. the preparation method of fiber C precast body mechanical property sample as described in claim 1, which is characterized in that the resin leaching
In the phenolic resin ethanol solution of stain, phenolic resin: the mass percent of ethyl alcohol is 30%:70%.
6. the preparation method of fiber C precast body mechanical property sample as described in claim 1, which is characterized in that described air-dried
Time is 3~5 hours.
7. the preparation method of fiber C precast body mechanical property sample as described in claim 1, which is characterized in that after air-drying
Aerobic crosslinking curing is carried out in sample merging heat-treatment furnace, heat treatment temperature: 165 ± 5 DEG C, soaking time: 1.5~2.5 hours.
8. the preparation method of fiber C precast body mechanical property sample as described in claim 1, which is characterized in that after finishing
It is the notch of 0.5mm that the upper and lower surfaces of interlayer shear sample have width respectively；The center line in each kerf width direction with
The distance between interlayer shear specimen length direction plane of symmetry is 3mm；The depth of each notch reaches the interlayer
Shear the specimen height direction plane of symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229437.7A CN109269855B (en) | 2018-10-22 | 2018-10-22 | Preparation method of mechanical property sample of C fiber preform |
Applications Claiming Priority (1)
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