CN108387458A - Carbon nano-tube fibre mechanical property testing system at high operating temperatures and method - Google Patents

Carbon nano-tube fibre mechanical property testing system at high operating temperatures and method Download PDF

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Publication number
CN108387458A
CN108387458A CN201810424031.8A CN201810424031A CN108387458A CN 108387458 A CN108387458 A CN 108387458A CN 201810424031 A CN201810424031 A CN 201810424031A CN 108387458 A CN108387458 A CN 108387458A
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CN
China
Prior art keywords
carbon nano
tube fibre
tested
test
mechanical property
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810424031.8A
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Chinese (zh)
Inventor
邸江涛
张超
宋彦辉
李清文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Institute of Nano Tech and Nano Bionics of CAS
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Suzhou Institute of Nano Tech and Nano Bionics of CAS
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Application filed by Suzhou Institute of Nano Tech and Nano Bionics of CAS filed Critical Suzhou Institute of Nano Tech and Nano Bionics of CAS
Priority to CN201810424031.8A priority Critical patent/CN108387458A/en
Publication of CN108387458A publication Critical patent/CN108387458A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/18Performing tests at high or low temperatures
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0017Tensile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/022Environment of the test
    • G01N2203/0222Temperature
    • G01N2203/0226High temperature; Heating means

Abstract

The invention discloses a kind of carbon nano-tube fibre mechanical property testing system at high operating temperatures and methods.The mechanical property testing system of the carbon nano-tube fibre at high operating temperatures includes:Mechanics Performance Testing device is used to apply the power needed for test to carbon nano-tube fibre to be tested;It for electric installation, is used to be passed through electric current to carbon nano-tube fibre to be tested, so that carbon nano-tube fibre self-heating to be tested;Gas shield device is at least used to provide protective gas environment to the carbon nano-tube fibre to be tested when test;And temperature testing device, it is used to detect the temperature of carbon nano-tube fibre to be tested.Mechanical property testing system provided by the invention realizes the Mechanics Performance Testing of carbon nano-tube fibre under the high temperature conditions, the temperature of carbon nano-tube fibre to be measured can be made to reach 2000 DEG C or more in a manner of electrified regulation, so as to the data of mechanical at a temperature of being paid no attention to.

Description

Carbon nano-tube fibre mechanical property testing system at high operating temperatures and method
Technical field
The present invention is more particularly directed to a kind of carbon nano-tube fibre mechanical property testing system at high operating temperatures and methods, belong to In carbon nanotube technical field of performance test.
Background technology
Carbon nanotube is a kind of nano material of one-dimentional structure, is curled into cyclic structure by similar mono-layer graphite, has The performances such as excellent mechanics, electricity, calorifics.In aerospace, electromagnetic shielding material, energy storage, lightweight wire, security protection, life The fields such as object material have broad application prospects.And carbon nano-tube fibre due between pipe less parallel arrange, be more advantageous to power, The conduction of electricity, heat.Using carbon nano-tube fibre lightweight, high-strength feature, the necks such as aerospace and security protection can be applied Domain;It is with a wide range of applications simultaneously in the fields such as thermal protection, fire-retardant, microwave absorption, heat radiation, composite material.Material is answered Used in aerospace field, need it that also there is good mechanical property under the high temperature conditions, currently, carbon nano-tube fibre is in height Mechanics Performance Testing under temperature state is also rarely reported.
Invention content
In view of the deficiencies of the prior art, at high operating temperatures the purpose of the present invention is to provide a kind of carbon nano-tube fibre Mechanical property testing system and method.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes:
An embodiment of the present invention provides a kind of mechanical property testing system of carbon nano-tube fibre at high operating temperatures, packets It includes:
Mechanics Performance Testing device is used to apply the power needed for test to carbon nano-tube fibre to be tested;
It for electric installation, is used to be passed through electric current to carbon nano-tube fibre to be tested, so that carbon nano-tube fibre to be tested is certainly Heating;
Gas shield device is at least used to provide protective gas ring to the carbon nano-tube fibre to be tested when test Border;And
Temperature testing device is used to detect the temperature of carbon nano-tube fibre to be tested.
The embodiment of the present invention additionally provides a kind of mechanic property test method of carbon nano-tube fibre at high operating temperatures, Including:
Carbon nano-tube fibre to be tested is placed in protective gas environment, and by carbon nano-tube fibre to be tested and mechanics Performance testing device connects;
It is enough to make carbon nano-tube fibre self-heating to be tested so that electric installation is passed through into carbon nano-tube fibre to be tested Electric current;
The temperature of carbon nano-tube fibre to be tested is monitored with temperature testing device;And
Apply the required power of test to carbon nano-tube fibre to be tested with Mechanics Performance Testing device.
Compared with prior art, the Mechanics Performance Testing system of carbon nano-tube fibre provided by the invention at high operating temperatures System, it is simple in structure, it is easy to build, it is reliable and stable;It realizes the mechanical property of carbon nano-tube fibre under the high temperature conditions and surveys Examination, can make the temperature of carbon nano-tube fibre to be measured reach 2000 DEG C or more, and can pass through change in a manner of electrified regulation Size of current and the temperature for changing carbon nano-tube fibre to be measured, so as to the Mechanics Performance Testing number at a temperature of being paid no attention to According to.
Description of the drawings
Fig. 1 is the Mechanics Performance Testing of a kind of carbon nano-tube fibre at high operating temperatures in an of the invention exemplary embodiments The structural schematic diagram of system;
Fig. 2 is the Mechanics Performance Testing of a kind of carbon nano-tube fibre at high operating temperatures in an of the invention exemplary embodiments The flow diagram of method;
Fig. 3 is the relational graph of the current value and temperature value that are passed through in carbon nano-tube fibre to be measured in 1-5 of the embodiment of the present invention;
Fig. 4 is the tensile strength change curve of different temperatures carbon nano-tube fibre to be measured in 1-5 of the embodiment of the present invention.
Specific implementation mode
In view of deficiency in the prior art, inventor is able to propose the present invention's through studying for a long period of time and largely putting into practice Technical solution.The technical solution, its implementation process and principle etc. will be further explained as follows.
An embodiment of the present invention provides a kind of mechanical property testing system of carbon nano-tube fibre at high operating temperatures, packets It includes:
Mechanics Performance Testing device is used to apply the power needed for test to carbon nano-tube fibre to be tested;
It for electric installation, is used to be passed through electric current to carbon nano-tube fibre to be tested, so that carbon nano-tube fibre to be tested is certainly Heating;
Gas shield device is at least used to provide protective gas ring to the carbon nano-tube fibre to be tested when test Border;And
Temperature testing device is used to detect the temperature of carbon nano-tube fibre to be tested.
Further, the Mechanics Performance Testing device includes universal testing machine.
Further, described for electric installation includes DC power supply, and the DC power supply passes through conducting wire and carbon nanometer to be tested Pipe fiber is electrically connected.
Further, the gas shield device includes container and inert gas feedway, the inert gas supply Device is connected to the inner cavity of the container, and in test, the lazy of the container intracavity is inputted by the inert gas feedway Property gas be at least enough to make the regional area of the container intracavity to form the protective gas environment.
Preferably, the container includes three mouthfuls of quartz ampoules.
Further, the temperature testing device uses non-contact temperature test device.
Preferably, the non-contact temperature test device includes infrared radiation thermometer.
The embodiment of the present invention additionally provides a kind of mechanic property test method of carbon nano-tube fibre at high operating temperatures, Including:
Carbon nano-tube fibre to be tested is placed in protective gas environment, and by carbon nano-tube fibre to be tested and mechanics Performance testing device connects;
It is enough to make carbon nano-tube fibre self-heating to be tested so that electric installation is passed through into carbon nano-tube fibre to be tested Electric current;
The temperature of carbon nano-tube fibre to be tested is monitored with temperature testing device;And
Apply the required power of test to carbon nano-tube fibre to be tested with Mechanics Performance Testing device.
Further, the test method further includes:Record the power of carbon nano-tube fibre to be tested at different temperatures Learn the performance test results.
Further, the power needed for the test includes the tensile strength for testing the carbon nano-tube fibre to be tested Power.
Further, the test method is the mechanical property based on the carbon nano-tube fibre at high operating temperatures What test system was implemented.
Further, the carbon nano-tube fibre to be measured includes that chemical vapour deposition technique or physical method prepare the carbon to be formed Nanotube fibers.
Further, the carbon nano-tube fibre to be measured include can spinning array membrane method or floating catalyst system prepare Carbon nano-tube fibre.
Preferably, at least carbon nano-tube fibre to be measured is kept to be vertically arranged during the test.
Preferably, the electrified regulation of carbon nano-tube fibre to be measured is synchronous with Mechanics Performance Testing carries out.
Preferably, the protective gas includes inert gas.
Further, the test method includes:Change be passed through size of current in carbon nano-tube fibre to be measured so that Carbon nano-tube fibre to be measured is heated to different test temperatures.
The technical solution, its implementation process and principle etc. will be further explained in conjunction with attached drawing as follows.
It please refers to Fig.1 and Fig. 2, a kind of mechanic property test method of carbon nano-tube fibre at high operating temperatures, including:
S1. the mechanical property testing system (as shown in Figure 1) of carbon nano-tube fibre at high operating temperatures is provided, by three mouthfuls of stones English pipe 2 is perpendicularly fixed on iron stand 1, the both ends of carbon nano-tube fibre 3 to be measured is connected via two conducting wires 4 respectively, through leading Line 4 is pierced by from three mouthfuls of 2 upper and lower ends mouths of quartz ampoule, and clamps two using two fixtures 7 of universal testing machine 6 are corresponding respectively Root conducting wire 4, carbon nano-tube fibre 3 keep plumbness;
S2. two conducting wires 4 are respectively connected to the positive terminal of DC power supply 5, negative pole end, setting electric current value simultaneously keeps current value Constant, test is passed through inert gas into three mouthfuls of quartz ampoules 2 from inert gas access mechanism 8 before starting and (is continued with excluding air It is passed through one minute), and it is continually fed into inert gas during the test;
S3., the eyepiece of infrared radiation thermometer 9 is aimed to the middle part of carbon nano-tube fibre 3 to be measured, and is opened in advance, record is powered Temperature change (the energy that infrared radiation thermometer is radiated during the energization by measuring carbon nano-tube fibre, to obtain in the process Obtain its temperature);
S4. start DC power supply 5 and universal testing machine 6 simultaneously, to test carbon nano-tube fibre to be measured in height The mechanical property that temperature state is write, and obtain the corresponding temperature value of different current values.
Preferably, carbon nano-tube fibre to be measured include can the carbon nanotube for preparing of spinning array membrane method or floating catalyst system Fiber.
Embodiment 1
The carbon nano-tube fibre prepared using floating catalyst system is worn copper wire with copper wire connecting carbon nanotube fiber both ends Go out quartz ampoule upper and lower ends mouth, two clamp conducting wires of universal testing machine, carbon nano-tube fibre is used in combination to keep vertical State;
DC power supply is accessed into conducting wire, setting electric current 0.3A, and is remained unchanged, is passed through indifferent gas in quartz ampoule in advance Body ventilates one minute to exclude air, and is continually fed into inert gas during the test;
The eyepiece of infrared radiation thermometer is aimed to the middle part of carbon nano-tube fibre, and opens infrared test switch, record in advance The temperature change of carbon nano-tube fibre in galvanization;
The start button for opening simultaneously DC power supply and universal testing machine, to test carbon nano-tube fibre in height The mechanical property of temperature state, and it is 1060 DEG C to obtain the corresponding temperature under the electric current;Test results are shown in figure 4.
Embodiment 2
The electric current of DC power supply is set as 0.4A, carbon nano-tube fibre temperature is 1340 DEG C, remaining the step of same embodiment 1, mechanical property of test carbon nano-tube fibre at a temperature of 1340 DEG C, test results are shown in figure 4.
Embodiment 3
The electric current of DC power supply is set as 0.5A, carbon nano-tube fibre temperature is 1600 DEG C, remaining the step of same embodiment 1, mechanical property of test carbon nano-tube fibre at a temperature of 1600 DEG C, test results are shown in figure 4.
Embodiment 4
The electric current of DC power supply is set as 0.6A, carbon nano-tube fibre temperature is 1820 DEG C, remaining the step of same embodiment 1, mechanical property of test carbon nano-tube fibre at a temperature of 1820 DEG C, test results are shown in figure 4.
Embodiment 5
The electric current of DC power supply is set as 0.7A, carbon nano-tube fibre temperature is 2020 DEG C, remaining the step of same embodiment 1, mechanical property of test carbon nano-tube fibre at a temperature of 2020 DEG C, test results are shown in figure 4.
The relational graph of size of current and corresponding temperature value is passed through in wherein embodiment 1-5 in carbon nano-tube fibre to be measured such as Shown in Fig. 3.
The mechanical property testing system of carbon nano-tube fibre provided by the invention at high operating temperatures, it is simple in structure, hold Easily build, it is reliable and stable;It realizes the Mechanics Performance Testing of carbon nano-tube fibre under the high temperature conditions, with the side of electrified regulation Formula can make the temperature of carbon nano-tube fibre to be measured reach 2000 DEG C or more, and can be changed by changing size of current to be measured The temperature of carbon nano-tube fibre, so as to the data of mechanical at a temperature of being paid no attention to.
It should be appreciated that the technical concepts and features of above-described embodiment only to illustrate the invention, its object is to allow be familiar with this The personage of item technology cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all According to equivalent change or modification made by spirit of the invention, should be covered by the protection scope of the present invention.

Claims (13)

1. a kind of mechanical property testing system of carbon nano-tube fibre at high operating temperatures, it is characterised in that including:
Mechanics Performance Testing device is used to apply the power needed for test to carbon nano-tube fibre to be tested;
It for electric installation, is used to be passed through electric current to carbon nano-tube fibre to be tested, so that carbon nano-tube fibre self-heating to be tested;
Gas shield device is at least used to provide protective gas environment to the carbon nano-tube fibre to be tested when test;With And
Temperature testing device is used to detect the temperature of carbon nano-tube fibre to be tested.
2. the mechanical property testing system of carbon nano-tube fibre according to claim 1 at high operating temperatures, feature exist In:The Mechanics Performance Testing device includes universal testing machine.
3. the mechanical property testing system of carbon nano-tube fibre according to claim 1 at high operating temperatures, feature exist In:Described for electric installation includes DC power supply, and the DC power supply is electrically connected by conducting wire with carbon nano-tube fibre to be tested.
4. the mechanical property testing system of carbon nano-tube fibre according to claim 1 at high operating temperatures, feature exist In:The gas shield device includes container and inert gas feedway, the inert gas feedway and the container Inner cavity connection, test when, the inert gas that the container intracavity is inputted by the inert gas feedway is at least enough The regional area of the container intracavity is set to form the protective gas environment.
5. the mechanical property testing system of carbon nano-tube fibre according to claim 4 at high operating temperatures, feature exist In:The container includes three mouthfuls of quartz ampoules.
6. the mechanical property testing system of carbon nano-tube fibre according to claim 1 at high operating temperatures, feature exist In:The temperature testing device uses non-contact temperature test device.
7. the mechanical property testing system of carbon nano-tube fibre according to claim 6 at high operating temperatures, feature exist In:The non-contact temperature test device includes infrared radiation thermometer.
8. a kind of mechanic property test method of carbon nano-tube fibre at high operating temperatures, it is characterised in that including:
Carbon nano-tube fibre to be tested is placed in protective gas environment, and by carbon nano-tube fibre to be tested and mechanical property Test device connects;
It is enough to make the electric current of carbon nano-tube fibre self-heating to be tested so that electric installation is passed through into carbon nano-tube fibre to be tested;
The temperature of carbon nano-tube fibre to be tested is monitored with temperature testing device;And
Apply the required power of test to carbon nano-tube fibre to be tested with Mechanics Performance Testing device.
9. test method according to claim 8, it is characterised in that further include:Carbon nano-tube fibre to be tested is recorded not Mechanical experimental results under synthermal.
10. test method according to claim 8, it is characterised in that:Power needed for the test includes for testing State the power of the tensile strength of carbon nano-tube fibre to be tested.
11. test method according to claim 8, it is characterised in that:The test method is to be based on claim 1-7 Any one of described in carbon nano-tube fibre mechanical property testing system at high operating temperatures implement.
12. test method according to claim 8, it is characterised in that:The carbon nano-tube fibre to be measured includes chemical gas Phase sedimentation or physical method prepare the carbon nano-tube fibre to be formed.
13. test method according to claim 12, it is characterised in that:The carbon nano-tube fibre to be measured includes can spinning Carbon nano-tube fibre prepared by array membrane method or floating catalyst system.
CN201810424031.8A 2018-05-04 2018-05-04 Carbon nano-tube fibre mechanical property testing system at high operating temperatures and method Pending CN108387458A (en)

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