CN202757814U - Sample preparation device of carbon fiber tensile property performance test - Google Patents
Sample preparation device of carbon fiber tensile property performance test Download PDFInfo
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- CN202757814U CN202757814U CN 201220405443 CN201220405443U CN202757814U CN 202757814 U CN202757814 U CN 202757814U CN 201220405443 CN201220405443 CN 201220405443 CN 201220405443 U CN201220405443 U CN 201220405443U CN 202757814 U CN202757814 U CN 202757814U
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Abstract
The utility model discloses a sample preparation device of a carbon fiber tensile property performance test. The sample preparation device comprises a main body support, a central shaft, at least two wire winding frames, a fixed rod and a telescopic rod, wherein the central shaft is arranged on the main body support, and the fixed rod and the telescopic rod are used for supporting the wire winding frames. One end of the fixed rod and one end of the telescopic rod are respectively fixed with the wire winding frames, the other end of the fixed rod and the other end of the telescopic rod are fixed on the central shaft, at least one wire winding frame is supported through the telescopic rod, and at least one wire winding frame is supported through the fixed rod. The sample preparation device of the carbon fiber tensile property performance test not only can greatly reduce sample preparation time, but also can effectively adjust tow tension to enable the testing samples to be straight, guarantees uniformity of the testing samples, and can finally guarantee accuracy of testing results.
Description
Technical field
The utility model relates to the preparation facilities field of testing of materials sample, is specifically related to a kind of sample preparation device of carbon fiber tensile property test.
Background technology
Carbon fiber refers to that carbon fiber content is at the inorganic material fiber more than 90%, therefore a series of excellent properties such as it has that density is little, quality is light, high specific strength, high ratio modulus, thermal expansivity are little, high temperature resistant, wear-resistant, corrosion-resistant, endurance extensively are used in Aero-Space, Leisure Sport, the field such as civilian.
The content of mechanical property test of carbon fiber mainly comprises: pulling strengrth, tensile modulus of elasticity, breaking elongation, volume density, line density etc., its method of testing has had standard GB/T/T 3362-2005 carbon fiber tensile property of multi-filament method of testing, needs the carbon fiber multifilament is carried out the impregnation pre-service in this testing standard.The standard test method of Unite States Standard (USS) ASTM D 4018 carbon fiber filaments and graphite fiber tow performance also all adopts the method for resin prepreg glue to test carbon fiber multifilament pulling strengrth in the foreign standards such as Nippon Standard JIS K7073-1988.Standard GB/T/T 3362-2005 to sample size in the test process, use resin content in impregnation resin, the sample, temperature and time all has corresponding regulation and description when solidifying.This standard the manual method impregnation, namely the long multifilament of clip 500mm is arrested two ends with hand and is entered impregnation in the glue, the regulation specimen is 10 samples in the standard, therefore uses manual method impregnation operation steps complicated, consuming time longer; Simultaneously be difficult to guarantee that tow has identical tension force during manual impregnation, cause easily tow crooked, and finally affect the test result accuracy.
Application publication number is sample preparation and the method for testing that the Chinese patent application of CN 102507283A discloses a kind of 12K tensile property of multi-filament test sample, comprise: 1) join glue: be that 100: 45: 150 TDE-85, Powdered DDM and acetone mix with mass ratio, obtain glue; 2) impregnation: adopt the wrapping machine impregnation, wrapping machine glue groove temperature is 20 ℃～35 ℃, be 15～30min heat time heating time, pouring into the glue for preparing in 20 ℃～35 ℃ glue grooves and being incubated 10～30min makes glue reach 20 ℃～35 ℃, to carbon fiber multifilament impregnation, obtain the carbon fiber multifilament behind the impregnation, then take off ryce, prepare to solidify; 3) solidify: the carbon fiber multifilament that impregnation is finished is at room temperature placed 5～25min and is placed in the electric drying oven with forced convection, is incubated respectively 30～60min respectively when 60 ℃, 90 ℃ and 150 ℃, has finished the curing to the carbon fiber multifilament behind the impregnation; 4) after curing finishes, carbon fiber multifilament sample is carried out in fixed length and the sample bag of packing into; 5) carbon fiber multifilament sample to be tested is tested with gauze and sand paper parcel.Although this technical scheme has overcome the relatively long deficiency of the unsettled defective of manual sample preparation and sample preparation and test period, but adopt the wrapping machine impregnation in its sample making course, can not control the tension force of carbon fiber multifilament, easily so that carbon fiber multifilament discontinuity, thereby cause carbon fiber multifilament fracture.
The utility model content
The utility model provides a kind of sample preparation device of carbon fiber tensile property test, not only can greatly reduce the sample preparation time by this device, and can effectively regulate tow tension, so that specimen is straight, guarantee the specimen homogeneity, and finally guarantee the accuracy of test result.
A kind of sample preparation device of carbon fiber tensile property test, comprise: main body rack, the fixed bar and the expansion link that are installed in the central shaft on the described main body rack, at least two lacing stands and are used for supporting lacing stand, described fixed bar and expansion link homogeneous end and described lacing stand are fixed, the other end is fixed on the described central shaft, wherein, have at least a lacing stand to support by expansion link, have at least a lacing stand to pass through fixed rod support.
Described fixed bar and expansion link homogeneous end and lacing stand are fixed, and the other end is fixed on the central shaft, thereby so that lacing stand is arranged on the central shaft outside, just can twine the carbon fiber multifilament on lacing stand.
As preferably, described fixed bar is all vertical with described central shaft with expansion link, and is convenient fixing.Described lacing stand comprises two wire winding rods that are provided with anti-skidding breach, and when the winding of carbon fiber multifilament, the carbon fiber multifilament can be partially submerged in the anti-skidding breach of wire winding rod, thereby is conducive to the fixing of carbon fiber multifilament.Further preferred, two wire winding rod and described central shaft threes that are provided with anti-skidding breach are parallel to each other, thereby are conducive to twine carbon fiber multifilament, good stability.
Described lacing stand can be two, three, four or more, and the length of the number by lacing stand is set, the length of fixed bar, expansion link and the angle of fixed bar and expansion link can be controlled the length of carbon fiber multifilament when twining a circle.
As preferably, described fixed bar and expansion link are four, be arranged on two different from the axial plane, described center, each is perpendicular to two fixed bars of the axial plane layout in described center and two expansion links; Described lacing stand is four, and each lacing stand is fixed by being positioned at two different fixed bar or expansion links perpendicular on the axial plane, described center.Namely lacing stand is supported by two fixed bars or two expansion links, and these two fixed bars or two expansion links be positioned at two different from the axial plane, described center.Thereby can lacing stand stably be fixed on the central shaft by fixed bar or expansion link, make things convenient for the winding of carbon fiber multifilament.Further preferred, each is arranged alternately with expansion link perpendicular to the fixed bar on the axial plane, described center and is mutually vertical, thereby the carbon fiber multifilament that is conducive to be wrapped in lacing stand is stressed evenly, be conducive to sample preparation, and the specimen of preparation can accurately be carried out the test of carbon fiber tensile property.
The length of described fixed bar and expansion link has determined to twine the length of carbon fiber multifilament, and as further preferred, the length of described fixed bar and expansion link is 145mm～290mm; In each lacing stand, two spacings that are provided with the wire winding rod of anti-skidding breach are 10mm～50mm, convenient stably winding.In convenient winding carbon fiber multifilament, can satisfy the test of carbon fiber tensile property to the requirement of carbon fiber multifilament length, and can be better so that the carbon fiber multifilament that is wrapped on the lacing stand is stressed evenly.
Described expansion link can be realized the tension force control to the carbon fiber multifilament, as preferably, described expansion link comprises the interior bar that is connected with described lacing stand and the outer tube that is connected with described central shaft, described interior bar and outer tube clearance fit, be provided with holddown spring in the described outer tube, described holddown spring one end holds out against described central shaft, the other end holds out against the end of described interior bar, be arranged with inner screw sheath on the described interior bar, the end that described interior bar stretches into described inner screw sheath is provided with spacing preiection, so that can not fall down from interior bar, described outer tube be provided with described inner screw sheath on the external thread that matches of internal thread.Bar was connected with outer tube and is connected in threaded engagement by inner screw sheath and outer tube realized, and regulated the compression degree of holddown spring by inner screw sheath, thereby can to a certain degree control the tension force of carbon fiber multifilament.Further preferred, described outer tube is provided with pilot hole, and described interior bar is provided with the projection that cooperates with this pilot hole, thereby so that interior bar and outer tube stretch along guide path.
A kind of method for making sample of carbon fiber tensile property test, adopt the sample preparation device of the utility model carbon fiber tensile property test, can greatly reduce the sample preparation time, and can be so that specimen is straight, guarantee sample homogeneity, and finally guarantee the accuracy of test result.
A kind of method for making sample of carbon fiber tensile property test may further comprise the steps:
(a) epoxy resin, hardening agent and acetone 10: 0.5 in mass ratio～2: 10～30 is made into epoxy resin adhesive liquid;
(b) carbon fiber multifilament to be measured is wrapped on the lacing stand, the lacing stand that winds carbon fiber multifilament to be measured is taken off from main body rack together with central shaft, fixed bar and expansion link, at epoxy resin adhesive liquid impregnation 0.5min～10min;
(c) then shake lacing stand after impregnation is finished is put back to lacing stand on the main body rack together with central shaft, fixed bar and expansion link, wipes unnecessary glue away again, the tension force of carbon fiber multifilament behind the adjustable telescopic rod control impregnation, and it is straight to be adjusted to the carbon fiber multifilament;
(d) put the sample preparation device of carbon fiber tensile property test into air dry oven and dry, at 60 ℃～150 ℃ oven dry 30min～120min, oven dry finishes rear cooling, then cuts the carbon fiber multifilament of curing;
(e) the preparation reinforced sheet is fixed with kraft in the carbon fiber multifilament two ends of solidifying, and obtain the specimen of carbon fiber tensile property test in 5 ℃～40 ℃ lower placement 5h～48h.
In the step (a), epoxy resin, hardening agent and acetone 10: 0.8 in mass ratio～1.2: 15～25 is made into epoxy resin adhesive liquid, the epoxy resin adhesive liquid of preparing under this mass ratio has more excellent curing performance.
Described epoxy resin is E44 type epoxy resin or E51 type epoxy resin, E44 type epoxy resin, E51 type epoxy resin are the epoxy resin of the general trade mark, and E44 type epoxy resin and E51 type epoxy resin can adopt the product of producing such as blue star new material Wuxi resin processing plant.Described hardening agent is a kind of in triethylene tetramine, the diethylenetriamine etc.Select above-mentioned epoxy resin and hardening agent to be conducive to improve the curing performance of epoxy resin adhesive liquid.
Need place in the sealing appliance after described epoxy resin adhesive liquid preparation is finished and preserve, it is 1～72 hour and epoxy resin adhesive liquid is accomplished to the interval time of bringing into use from preparation, and can reuse, the prepolymerization of epoxy resin adhesive liquid generation therebetween, within this time period, use, can guarantee that epoxy resin adhesive liquid has preferably curing performance.5h～10h use was preserved in sealing after described epoxy resin adhesive liquid preparation was finished, can be so that epoxy resin adhesive liquid has more excellent curing performance.
In the step (b), at epoxy resin adhesive liquid impregnation 0.5min～3min, make it treat carbon determination fiber multifilament and have better solidification effect.
Compared with prior art, the utlity model has following advantage:
The sample preparation device of the utility model carbon fiber tensile property test, comprise main body rack, central shaft, lacing stand and the fixed bar and the expansion link that are used for supporting lacing stand, not only can greatly reduce the sample preparation time by this device, and can effectively regulate tow tension, so that specimen is straight, guarantee the specimen homogeneity, and finally guarantee the accuracy of test result.
The method for making sample of carbon fiber tensile property test, the sample preparation device that adopts the utility model carbon fiber tensile property to test is by the quantity that the number of turns can be set same sample to be measured that turns around of lacing stand; And can set the group number of testing sample by setting wire winding rod length in the lacing stand, than manual sample preparation, its efficient improves greatly.Adopt the sample preparation device sample preparation of carbon fiber tensile property test, use very simple.Simultaneously, with the mass ratio of epoxy resin, hardening agent and acetone among the preparation method and drying condition etc. in conjunction with lower, improved curing performance, and can control by adjustable telescopic rod the tension force of carbon fiber multifilament behind the impregnation, it is straight to be adjusted to the carbon fiber multifilament, thereby has guaranteed to detect the Stability and veracity of data.
Description of drawings
Fig. 1 is the structural representation of the sample preparation device of the utility model carbon fiber tensile property test;
Fig. 2 is the structural representation of expansion link in the sample preparation device of the utility model carbon fiber tensile property test;
Fig. 3 is the enlarged diagram at assigned address A place among Fig. 2.
Embodiment
As shown in Figure 1, sample preparation device for the test of carbon fiber tensile property, comprise: main body rack 1, central shaft 2, lacing stand 3 and the fixed bar 5 and the expansion link 4 that are used for supporting lacing stand 3, central shaft 2 is installed on the main body rack 1, fixed bar 5 and expansion link 4 homogeneous ends and lacing stand 3 are fixing, and the other end is fixed on the central shaft 2.Fixed bar 5 is all vertical with central shaft 2 with expansion link 4.The length of fixed bar 5 is 212mm, and the length of expansion link 4 is 212mm ± 25mm, and ± 25mm is adjustable distance.Fixed bar 5 and expansion link 4 are four, be arranged on two different axial planes perpendicular to central shaft 2, at each two fixed bars 5 of axial plane layout and two expansion link 4 perpendicular to central shaft 2, fixed bar 5 on each plane perpendicular to axial direction and expansion link 4 is mutually vertical and be arranged alternately, and two different being perpendicular to the fixed bar 5 on the axial plane of central shaft 2 and expansion link 4 are symmetrical arranged.Particularly, at central shaft 2 two circular mounting sheets (not marking) are installed, be fixed with two fixed bars 5 and two expansion links 4 at every circular mounting sheet, the circular mounting sheet is axial vertical with central shaft 2, mutually vertical with expansion link 4 with the fixed bar 5 on a slice circular mounting sheet, linearly arrange with two fixed bars 5 on a slice circular mounting sheet, linearly arrange with two expansion links 4 on a slice circular mounting sheet, fixed bar 5 on two circular mounting sheets is with expansion link 4 and is symmetrical arranged, and is symmetrical arranged and forms four support members that are used for supporting lacing stand 3.Lacing stand 3 is 4, each lacing stand 3 is by being positioned at two different fixing perpendicular to the fixed bar 5 on the axial plane of central shaft 2 or expansion link 4, be that a symmetrically arranged fixed bar 5 forms a support member on a fixed bar 5 and another sheet circular mounting sheet on a slice circular mounting sheet, a lacing stand 3 is installed, a symmetrically arranged expansion link 4 forms a support member on a expansion link 4 on same a slice circular mounting sheet and another sheet circular mounting sheet, a lacing stand 3 is installed, four support members are installed 4 lacing stands 3 altogether.
As shown in Figure 1, lacing stand 3 comprises the wire winding rod that is provided with anti-skidding breach (not shown) and the wire winding rod support (not marking) that is used for installing wire winding rod, in each lacing stand 3, the wire winding rod that is provided with anti-skidding breach is two and is parallel to each other that two spacings that are provided with the wire winding rod of anti-skidding breach are 38mm.The wire winding rod that is provided with anti-skidding breach in the lacing stand 3 is parallel with central shaft 2.
Such as Fig. 2, shown in Figure 3, expansion link 4 comprises the interior bar 41 that is connected with lacing stand 3 and the outer tube 42 that is connected with central shaft 2, interior bar 41 and outer tube 42 clearance fit, interior bar 41 1 ends insert in the outer tube 42, be provided with holddown spring 43 in the outer tube 42, holddown spring 43 1 ends hold out against central shaft 2, the other end holds out against interior bar 41 ends, be arranged with inner screw sheath 44 on the interior bar 41, the end that interior bar 41 stretches into inner screw sheath 44 is provided with spacing preiection, so that can not fall down from interior bar 41, outer tube 42 be provided with inner screw sheath 44 on the external thread that matches of internal thread, by being connected that the interior bar 41 of the realization of the threaded engagement on inner screw sheath 44 and the outer tube 42 is connected with outer tube, and pass through the compression degree that inner screw sheath 44 is regulated holddown springs 43.Outer tube 42 is provided with strip pilot hole 45, interior bar 41 is provided with the projection 46 that cooperates with this strip pilot hole 45, under the effect of holddown spring 43, projection 46 is in these strip pilot hole 45 interior slips, thereby so that interior bar 41 and outer tube 42 stretch along guide path.
A kind of method for making sample of carbon fiber tensile property test, the sample preparation device that adopts the utility model carbon fiber tensile property to test may further comprise the steps:
(a) E44 type epoxy resin (production of blue star new material Wuxi resin processing plant), hardening agent (triethylene tetramine) and acetone are made into epoxy resin adhesive liquid in mass ratio at 10: 1: 20, preparation is finished sealing and is preserved the 8h use;
(b) carbon fiber multifilament 6 to be measured is wrapped on the lacing stand 3, carbon fiber multifilament to be measured 6 two ends are fixed with medical proof fabric, when twining, twine 2 circles, the lacing stand 3 that winds carbon fiber multifilament 6 to be measured is taken off from main body rack 1 together with central shaft 2, fixed bar 5 and expansion link 4, sealing is preserved the epoxy resin adhesive liquid of 8h and pour in the metal chassis, again with impregnation 1min in the epoxy resin adhesive liquid of carbon fiber multifilament 6 to be measured in metal chassis;
(c) shake gently lacing stand 3 after impregnation is finished, then lacing stand 3 is put back on the main body rack 1 together with central shaft 2, fixed bar 5 and expansion link 4, re-use paper and wipe unnecessary glue away, compression degree by inner screw sheath 44 adjusting holddown springs 43, the tension force of carbon fiber multifilament 6 behind the control impregnation, it is straight to be adjusted to carbon fiber multifilament 6;
(d) sample preparation device of carbon fiber tensile property test is placed first 10min, and then put the sample preparation device of carbon fiber tensile property test into air dry oven and dry, at 120 ℃ of oven dry 120min, after finishing, oven dry cools off, then cut the carbon fiber multifilament of curing;
(e) utilize two liquid mixed hardening glue (AB glue; the HY-914 type; Tianjin Yan Hai chemistry company limited produces) the preparation reinforced sheet is fixed with kraft in the carbon fiber multifilament two ends of solidifying; in case the fibre bundle slippage in the test process; the length of each specimen; the length of namely testing tow is 200mm, and obtains the specimen that the carbon fiber tensile property is tested in 25 ℃ of lower 24h of placement of room temperature.
Use the sample preparation device of the utility model carbon fiber tensile property test that toray company's T 800H (12K) carbon fiber multifilament pulling strengrth is tested, the technical indicator that producer provides is 5.49GPa, use this device and reach tension force control when passing through sample preparation owing to overcome the complicated processes of manual sample preparation, thereby guaranteed the accuracy of final testing result, concrete test result is as follows:
Test turned around for two weeks with the carbon fiber multifilament at lacing stand 3 for the first time, made 8 parallel sample, and test result is as shown in table 1 for the first time.
Table 1
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Mean value | The cv value |
| 5.50 | 5.70 | 5.74 | 5.56 | 5.48 | 5.54 | 5.44 | 5.61 | 5.57 | 1.89％ |
Wherein cv value (coefficient of variation claims again coefficient of dispersion) refers to the ratio of standard deviation and mean value, represents that with percentage specific formula for calculation is as follows:
Wherein, X
iResult for test specimens;
Be test specimens mean value; N is the specimen number.
Test turned around for two weeks with the carbon fiber multifilament at lacing stand 3 for the second time, made 8 parallel sample, and test result is as shown in table 2 for the second time.
Table 2
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Mean value | The cv value |
| 5.35 | 5.73 | 5.58 | 5.64 | 5.53 | 5.57 | 5.56 | 5.52 | 5.56 | 1.96％ |
In twice test result, the pulling strengrth of test is very approaching with actual pulling strengrth, and the cv value is all very little and approaching, shows that the sample of this device preparation can guarantee the specimen homogeneity, and finally guarantees the Stability and veracity of test result.
Claims (8)
1. the sample preparation device of carbon fiber tensile property test, it is characterized in that, comprise: main body rack, the fixed bar and the expansion link that are installed in the central shaft on the described main body rack, at least two lacing stands and are used for supporting lacing stand, described fixed bar and expansion link homogeneous end and described lacing stand are fixed, the other end is fixed on the described central shaft, wherein, have at least a lacing stand to support by expansion link, have at least a lacing stand to pass through fixed rod support.
2. the sample preparation device of carbon fiber tensile property test according to claim 1 is characterized in that described fixed bar is all vertical with described central shaft with expansion link;
Described lacing stand comprises two wire winding rods that are provided with anti-skidding breach.
3. the sample preparation device of carbon fiber tensile property test according to claim 2 is characterized in that two wire winding rod and described central shaft threes that are provided with anti-skidding breach are parallel to each other.
4. the sample preparation device of carbon fiber tensile property according to claim 2 test, it is characterized in that, described fixed bar and expansion link are four, be arranged on two different from the axial plane, described center, each is perpendicular to two fixed bars of the axial plane layout in described center and two expansion links;
Described lacing stand is four, and each lacing stand is fixed by being positioned at two different fixed bar or expansion links perpendicular on the axial plane, described center.
5. the sample preparation device of carbon fiber tensile property test according to claim 4 is characterized in that, each is arranged alternately with expansion link perpendicular to the fixed bar on the axial plane, described center and is mutually vertical.
6. the sample preparation device of carbon fiber tensile property test according to claim 4 is characterized in that the length of described fixed bar and expansion link is 145mm～290mm;
In each lacing stand, two spacings that are provided with the wire winding rod of anti-skidding breach are 10mm～50mm.
7. the sample preparation device of carbon fiber tensile property according to claim 1 test, it is characterized in that, described expansion link comprises the interior bar that is connected with described lacing stand and the outer tube that is connected with described central shaft, described interior bar and outer tube clearance fit, be provided with holddown spring in the described outer tube, described holddown spring one end holds out against described central shaft, the other end holds out against the end of described interior bar, be arranged with inner screw sheath on the described interior bar, the end that described interior bar stretches into described inner screw sheath is provided with spacing preiection, described outer tube be provided with described inner screw sheath on the external thread that matches of internal thread.
8. the sample preparation device of carbon fiber tensile property test according to claim 7 is characterized in that described outer tube is provided with pilot hole, and described interior bar is provided with the projection that cooperates with this pilot hole.
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| CN 201220405443 CN202757814U (en) | 2012-08-15 | 2012-08-15 | Sample preparation device of carbon fiber tensile property performance test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698169A (en) * | 2012-09-27 | 2014-04-02 | 中国石油化工股份有限公司 | Sample making apparatus used for test of mechanical properties of carbon fiber |
| CN109230736A (en) * | 2018-09-01 | 2019-01-18 | 陕西智多搭智能科技有限公司 | Tension of aluminum foil detection device |
| CN110926892A (en) * | 2019-11-26 | 2020-03-27 | 湖北航天技术研究院总体设计所 | Tool and method for winding and sample preparation of carbon fiber multifilament |
-
2012
- 2012-08-15 CN CN 201220405443 patent/CN202757814U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698169A (en) * | 2012-09-27 | 2014-04-02 | 中国石油化工股份有限公司 | Sample making apparatus used for test of mechanical properties of carbon fiber |
| CN103698169B (en) * | 2012-09-27 | 2016-05-04 | 中国石油化工股份有限公司 | A kind of sample making apparatus for mechanical property test of carbon fiber |
| CN109230736A (en) * | 2018-09-01 | 2019-01-18 | 陕西智多搭智能科技有限公司 | Tension of aluminum foil detection device |
| CN110926892A (en) * | 2019-11-26 | 2020-03-27 | 湖北航天技术研究院总体设计所 | Tool and method for winding and sample preparation of carbon fiber multifilament |
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