CN109991060A - A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control - Google Patents
A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control Download PDFInfo
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- CN109991060A CN109991060A CN201910326732.2A CN201910326732A CN109991060A CN 109991060 A CN109991060 A CN 109991060A CN 201910326732 A CN201910326732 A CN 201910326732A CN 109991060 A CN109991060 A CN 109991060A
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- 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
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Abstract
The present invention relates to a kind of methods of carbon fiber multifilament tensile bars sample preparation constant tensile control, bifilar take in parallel of the fibre bundle for having soaked glue is placed on sample preparation frame body by operator, weight is directly hung on fibre bundle in the side of sample preparation frame, and living weight with hand rest is exactly in weight position between two weight levers, weight height is unlimited, and two strands of fibers of the other end knot；Another weight is hung at knotting, counterweight object location is finely adjusted；In operating process, two strands of fibers of same fibre bundle are respectively placed in the outside of same group of fiber bumping post on frame body；Sample preparation frame is placed in baking oven and is solidified according to technological temperature, carbon fiber multifilament tensile bars can be obtained.It is of the invention to be mainly characterized by utilizing suspension weight during sample preparation and cured later, provide constant tension, it ensures the consistency with tension between a collection of sample preparation tow, while also ensuring the consistency of different batches sample preparation tension, solve the problems, such as the identical tension of overall process.
Description
Technical field
The present invention relates to carbon fiber production technical fields, are that a kind of carbon fiber multifilament tensile bars sample preparation is permanent specifically
The method of tension force.
Background technique
Polyacrylonitrile-based carbon fibre is a kind of artificial synthetic fiber, is passed through by acrylonitrile and itaconic acid or other comonomers
The fibrous polymer obtained after the processing of the series of process such as polymerization, spinning, pre-oxidation and carbonization.Polyacrylonitrile-based carbon fibre
With high specific strength, high ratio modulus, high temperature resistant, resistant to chemical etching, endurance, heat-resisting, shock resistance, anti-radiation, easy conductive, heat transfer
With a series of excellent properties such as specific gravity is small, belong to typical high-performance fiber.And the mechanical performance index of carbon fiber is to judge carbon
The main foundation of fiber product specification and grade, from high-strength carbon fiber to high-strength and high-modulus type carbon fiber, the carbon fiber of various models
Tieing up product, none is divided by fibrous mechanical property.The mechanical property characterization of carbon fiber is divided into filament stretch and multifilament
It stretches, because the fluctuation of filament stretch result is larger, is difficult to symbolize the true mechanical property of carbon fiber, and the later period is answered in its test
Little with directive significance, therefore, the multifilament stretching of carbon fiber is the characterizing method being widely used in current field.
The multifilament drawing process of carbon fiber has carried out certain specification in national standard GBT3362-2017, and every beam is provided in national standard
Fiber needs sample preparation item 10, it is desirable that the fiber after impregnation " is straightened and tightens " on hanging wire frame, but without tension and sample preparation device
Clearly introduce.In the actual operation process, in order to realize " be straightened and tighten " of fiber after impregnation, used in each manufacturer of carbon fiber
Sample preparation device also respectively have feature, such as steel frame used in large scale test, first by fiber be wrapped on steelframe again into
Row impregnation, the tension during the method not can guarantee fiber impregnation and after impregnation, there are also producers to use the shelf with spring, a branch of
Fiber reciprocal 10 times, but tension when winding shelf is still the influence by human factor, causes tension between batten uneven.It faces
Requirement of the user for carbon fiber performance and stability is increasingly harsh, it is ensured that during carbon fiber multifilament tensile bars sample making course converges
Constant tensile control seems most important.
Summary of the invention
It is larger it is an object of the invention to solve the problems, such as to fluctuate between carbon fiber multifilament tensile bars, a kind of carbon fiber is provided
The method of multifilament tensile bars sample preparation constant tensile control；Mechanical property test of carbon fiber precision can be improved in the application, and operation is just
Victory reduces manual operation difference.
The purpose of the present invention is achieved through the following technical solutions:
A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control, the specific steps are that: in operation, operation
Bifilar take in parallel of the fibre bundle for having soaked glue is placed on sample preparation frame body by personnel, and weight is directly hung over fibre in the side of sample preparation frame
It ties up on tow, and living weight with hand rest is exactly in weight position between two weight levers, weight height is unlimited, but ensures
Weight is hanging, and two strands of fibers of the other end knot；Another weight is hung at knotting, counterweight object location is finely adjusted, it is ensured that same
Two weight heights of one tow are consistent and all hanging, and weight is between weight lever；In operating process, same fibre bundle
Two strands of fibers be respectively placed in the outside of same group of fiber bumping post on frame body, it is ensured that fiber is contactless and intersects；Sample preparation frame is put
It is placed in baking oven and is solidified according to technological temperature, carbon fiber multifilament tensile bars can be obtained.
Sample preparation frame is placed in baking oven and is solidified according to technological temperature, 1-2 is small generally at 110-140 DEG C for solidification
When.
A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control, in order to realize the identical tension in sample making course
Control needs a kind of carbon fiber multifilament to stretch identical tension sample preparation frame, and it includes pedestal, frame body, fiber bumping post, weight bumping posts, again
Object and connecting rod.
Sample preparation frame pedestal is made by stainless steel square pipe, and to ensure that sample preparation frame body is stablized, base width is not less than 30cm, pedestal
Length is determined according to mating baking oven size.
Sample preparation frame frame body is parallel by two groups, be rectangle, three side of rectangle is stainless more than or equal to 1.5cm by diameter
Steel round bar is processed into, and the endpoint of rectangle a line vacancy, two sides of vacancy is welded on pedestal, two groups of parallel framves
It is welded and fixed between body by connecting rod.
Sample preparation frame body length is 5-10cm smaller than base length, the horizontal space 8-10cm between two parallel frame bodies, system
Sample rack body height is 80-90cm.
The top of frame body welds the fiber bumping post of high 0.5cm according to constant spacing, for the sub-wire of fiber in sample making course,
Fiber bumping post center spacing 3-4cm, bumping post number is depending on frame body length, and in pairs, each group is used for one to fiber bumping post
Bundle fiber.
A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control needs to be provided by the weight of fixed weight permanent
Determine tension, weight is made of solid metal, and there is a hook on weight top, and when use hangs on fibre bundle.12K and following specification,
Weight weight is in 0.5-1kg, and 12K or more weight weight is in 1-1.5kg.
In the lower part of sample preparation frame body, at the above 20cm of pedestal, there is cross bar to be welded on frame body, weight gear is welded on cross bar
Column, weight bumping post and the fiber bumping post above it correspond, and effect prevents weight from shaking when being mobile sample preparation frame.
Compared with prior art, the positive effect of the present invention is:
It is of the invention to be mainly characterized by providing constant using suspension weight during sample preparation and cured later
Power, it is ensured that with the consistency of tension between a batch sample preparation tow, while also ensuring the consistency of different batches sample preparation tension, phase
For solving the problems, such as the identical tension of overall process with other means, the present invention such as spring sample preparation framves.
Detailed description of the invention
The front view of Fig. 1 the application
The side view of Fig. 2 the application；
The label in accompanying drawing is: 1, pedestal；2, frame body；3, fibre bundle；4, fiber bumping post；5, weight bumping post；6, weight；
7, connecting rod.
Specific embodiment
A kind of specific embodiment party of the method for carbon fiber multifilament tensile bars sample preparation constant tensile control of the present invention presented below
Formula.
Embodiment 1
A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control stretches permanent by a kind of carbon fiber multifilament
Power sample preparation frame realizes that it includes pedestal 1, frame body 2, fibre bundle 3, fiber bumping post 4, weight bumping post 5, weight 6 and connecting rods 7.
The comparison of using effect is carried out to 10 axis 24K carbon fibers, when using method provided by the invention, operator will
Bifilar take in parallel of fibre bundle 3 for having soaked glue is placed on sample preparation frame body 2, and weight 6 is directly hung over fiber in the side of sample preparation frame
On tow, and living weight with hand rest is exactly in weight position between two weight levers 5, and weight height is unlimited, but ensures
Weight is hanging, and two strands of fibers of the other end knot, and another weight is hung at knotting, counterweight object location is finely adjusted, it is ensured that same
Two weight heights of one tow are consistent and all hanging, and weight is between weight lever.In operating process, same fibre bundle
Two strands of fibers be respectively placed in the outside of same group of fiber bumping post 4 on frame body, it is ensured that fiber it is contactless and intersect.By sample preparation frame
It is placed in baking oven and is solidified according to technological temperature, carbon fiber multifilament tensile bars can be obtained.
Identical sampling and environment, the comparison of tensile strength of fiber index is such as following table institute before and after the method for the present invention use
Show, after apparatus of the present invention come into operation, tensile strength of fiber CV value is substantially reduced.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make several improvements and modifications, these improvements and modifications also should be regarded as
In protection scope of the present invention.
Claims (9)
1. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control, which is characterized in that the specific steps are that: it is grasping
When making, operator is taken the fibre bundle for having soaked glue is bifilar and is placed on sample preparation frame body in parallel, in the side of sample preparation frame by weight
It directly hangs on fibre bundle, and living weight with hand rest is exactly in weight position between two weight levers, weight height
It is unlimited, but ensure that weight is hanging, two strands of fibers of the other end knot；Another weight is hung at knotting, counterweight object location carries out
Fine tuning, it is ensured that two weight heights of same tow are consistent and all hanging, and weight is between weight lever；In operating process,
Two strands of fibers of same fibre bundle are respectively placed in the outside of same group of fiber bumping post on frame body, it is ensured that fiber is contactless and hands over
Fork；Sample preparation frame is placed in baking oven and is solidified according to technological temperature, carbon fiber multifilament tensile bars can be obtained.
2. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as described in claim 1, which is characterized in that
Sample preparation frame is placed in baking oven and is solidified according to technological temperature, curing time is 1-2 small at solidification temperature is 110-140 DEG C
When.
3. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as described in claim 1, which is characterized in that
The carbon fiber multifilament stretches identical tension sample preparation frame, and it includes pedestal, frame body, fiber bumping post, weight bumping post, weight and connections
Bar.
4. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as claimed in claim 3, which is characterized in that
Sample preparation frame pedestal is made by stainless steel square pipe, and to ensure that sample preparation frame body is stablized, base width is not less than 30cm.
5. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as claimed in claim 3, which is characterized in that
By two groups, stainless steel round bar parallel, that be rectangle, three side of rectangle is by diameter more than or equal to 1.5cm adds sample preparation frame frame body
Work is made, and the endpoint of rectangle a line vacancy, two sides of vacancy is welded on pedestal, between two groups of parallel frame bodies by
Connecting rod is welded and fixed.
6. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as claimed in claim 3, which is characterized in that
Sample preparation frame body length is 5-10cm smaller than base length, the horizontal space 8-10cm between two parallel frame bodies, and sample preparation frame body is high
Degree is 80-90cm.
7. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as claimed in claim 3, which is characterized in that
The top of frame body welds the fiber bumping post of high 0.5cm according to constant spacing, for the sub-wire of fiber in sample making course, fiber bumping post
Center spacing 3-4cm, bumping post number is depending on frame body length, and in pairs, each group is used for mass of fibers to fiber bumping post.
8. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as claimed in claim 3, which is characterized in that
It needs to provide constant-tension by the weight of fixed weight, weight is made of solid metal, and there is a hook on weight top, and when use hangs over
On fibre bundle；12K and following specification, weight weight is in 0.5-1kg, and 12K or more weight weight is in 1-1.5kg.
9. a kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control as claimed in claim 3, which is characterized in that
In the lower part of sample preparation frame body, at the above 20cm of pedestal, there is cross bar to be welded on frame body, weight bumping post, weight are welded on cross bar
Bumping post and the fiber bumping post above it correspond, and effect prevents weight from shaking when being mobile sample preparation frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910326732.2A CN109991060A (en) | 2019-04-23 | 2019-04-23 | A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control |
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| CN201910326732.2A CN109991060A (en) | 2019-04-23 | 2019-04-23 | A kind of method of carbon fiber multifilament tensile bars sample preparation constant tensile control |
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| US20100112322A1 (en) * | 2007-01-30 | 2010-05-06 | Georgia Tech Research Corporation | Carbon fibers and films and methods of making same |
| CN102759479A (en) * | 2012-07-20 | 2012-10-31 | 北京化工大学 | Gluing fixed support for tensile property tests on fiber multifilaments and fiber multifilament sample preparing method |
| CN103820908A (en) * | 2014-03-12 | 2014-05-28 | 江苏绿材谷新材料科技发展有限公司 | Method and device for eliminating twist of fiber strand |
| CN103981715A (en) * | 2014-05-28 | 2014-08-13 | 航天材料及工艺研究所 | No-solvent type glue solution for testing tensile property of carbon fiber multifilament and application method of no-solvent type glue solution |
| JP2015071663A (en) * | 2013-10-02 | 2015-04-16 | 三菱レイヨン株式会社 | Carbon fiber bundle for filament winding |
| CN104819877A (en) * | 2015-04-08 | 2015-08-05 | 中国建材检验认证集团股份有限公司 | Unidirectional carbon fiber cloth tension property testing sample preparation method |
| CN108303296A (en) * | 2018-01-18 | 2018-07-20 | 航天材料及工艺研究所 | A kind of method for making sample for the test of high model carbon fiber tensile property of multi-filament |
| CN108469366A (en) * | 2018-03-13 | 2018-08-31 | 航天材料及工艺研究所 | A kind of large-tow carbon fiber tensile property of multi-filament test sample and its method for making sample |
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2019
- 2019-04-23 CN CN201910326732.2A patent/CN109991060A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1258277A (en) * | 1968-10-03 | 1971-12-30 | ||
| JP2002266158A (en) * | 2001-03-13 | 2002-09-18 | Mitsubishi Rayon Co Ltd | Heat-resistant polypropylene fiber, heat-resistant polypropylene multifilament yarn, and method for producing heat-resistant polypropylene fiber |
| US20100112322A1 (en) * | 2007-01-30 | 2010-05-06 | Georgia Tech Research Corporation | Carbon fibers and films and methods of making same |
| CN102759479A (en) * | 2012-07-20 | 2012-10-31 | 北京化工大学 | Gluing fixed support for tensile property tests on fiber multifilaments and fiber multifilament sample preparing method |
| JP2015071663A (en) * | 2013-10-02 | 2015-04-16 | 三菱レイヨン株式会社 | Carbon fiber bundle for filament winding |
| CN103820908A (en) * | 2014-03-12 | 2014-05-28 | 江苏绿材谷新材料科技发展有限公司 | Method and device for eliminating twist of fiber strand |
| CN103981715A (en) * | 2014-05-28 | 2014-08-13 | 航天材料及工艺研究所 | No-solvent type glue solution for testing tensile property of carbon fiber multifilament and application method of no-solvent type glue solution |
| CN104819877A (en) * | 2015-04-08 | 2015-08-05 | 中国建材检验认证集团股份有限公司 | Unidirectional carbon fiber cloth tension property testing sample preparation method |
| CN108303296A (en) * | 2018-01-18 | 2018-07-20 | 航天材料及工艺研究所 | A kind of method for making sample for the test of high model carbon fiber tensile property of multi-filament |
| CN108469366A (en) * | 2018-03-13 | 2018-08-31 | 航天材料及工艺研究所 | A kind of large-tow carbon fiber tensile property of multi-filament test sample and its method for making sample |
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Address after: 312000 91 hills, Binhai Industrial Zone, Keqiao District, Shaoxing, Zhejiang Applicant after: Zhejiang Baojing carbon material Co.,Ltd. Applicant after: ZHEJIANG JINGYE XINXING MATERIAL Co.,Ltd. Address before: 312030 91 hills, Binhai Industrial Zone, Keqiao District, Shaoxing, Zhejiang Applicant before: ZHEJIANG JINGGONG CARBON FIBER Co.,Ltd. Applicant before: ZHEJIANG JINGYE XINXING MATERIAL Co.,Ltd. |
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Effective date of registration: 20220708 Address after: 312000 91 hills, Binhai Industrial Zone, Keqiao District, Shaoxing, Zhejiang Applicant after: Zhejiang Baojing carbon material Co.,Ltd. Address before: 312000 91 hills, Binhai Industrial Zone, Keqiao District, Shaoxing, Zhejiang Applicant before: Zhejiang Baojing carbon material Co.,Ltd. Applicant before: ZHEJIANG JINGYE XINXING MATERIAL Co.,Ltd. |