CN116087079A - Polyimide film high temperature resistance testing device and method thereof - Google Patents

Polyimide film high temperature resistance testing device and method thereof Download PDF

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Publication number
CN116087079A
CN116087079A CN202310049868.XA CN202310049868A CN116087079A CN 116087079 A CN116087079 A CN 116087079A CN 202310049868 A CN202310049868 A CN 202310049868A CN 116087079 A CN116087079 A CN 116087079A
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test
pipe
polyimide film
temperature resistance
high temperature
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CN202310049868.XA
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Chinese (zh)
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任峰
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Jiangsu Yunsheng Insulation Technology Co ltd
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Jiangsu Yunsheng Insulation Technology Co ltd
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Priority to CN202310049868.XA priority Critical patent/CN116087079A/en
Publication of CN116087079A publication Critical patent/CN116087079A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/02—Supporting web roll
    • B65H16/06—Supporting web roll both-ends type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/02—Supporting web roll
    • B65H18/028—Both ends type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/103—Reel-to-reel type web winding and unwinding mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1133—Size of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Ecology (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Pathology (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses a polyimide film high temperature resistance testing device, which comprises: a main body unit, comprising: the device comprises a test platform, mounting seats symmetrically arranged on the test platform, and a winding roller and an unwinding roller which are respectively and rotatably arranged on the mounting seats at two sides, wherein a winding motor and an unwinding motor are respectively and fixedly arranged on the mounting seats at two sides, and the winding motor and the unwinding motor respectively drive the winding roller and the unwinding roller to rotate; a test unit, comprising: the test platform comprises a test channel arranged on the test platform and telescopic cylinders symmetrically arranged on the test channel. According to the invention, through synchronous heating of the electric heating pipes, the air flow sent into the straight-through pipe by the air inlet pipe is contacted with the electric heating pipes, so that heat is uniformly blown out from two sides of the test channel through the spray head, the temperature change of the inner side of the test channel is more uniform, the heating of the film is also more uniform, and the realization of test accuracy is facilitated.

Description

Polyimide film high temperature resistance testing device and method thereof
Technical Field
The invention relates to the technical field of film production, in particular to a polyimide film high temperature resistance testing device and a polyimide film high temperature resistance testing method.
Background
The polyimide film is a film which is formed by polycondensation and tape casting of pyromellitic dianhydride and diamine diphenyl ether in a strong polar solvent and imidization, and has excellent heat resistance due to the fact that a large number of aromatic rings are contained in the molecular chain of the polyimide film, and the decomposition temperature of the polyimide film for producing qualified polyimide films is generally higher than 500 ℃ and sometimes even higher, and is one of the varieties with high heat stability of the currently known organic polymers.
In order to ensure the heat resistance of the product after the polyimide film is produced, the performance of the film product needs to be tested, the conventional testing device is generally heated by an electric heating tube, the testing environment temperature of the film is not uniform, and staff cannot always make visual judgment after the film is subjected to micro deformation in a high-temperature environment.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The invention is provided in view of the problems of the conventional polyimide film high temperature resistance testing device and the method thereof.
In order to solve the technical problems, the invention provides the following technical scheme: a polyimide film high temperature resistance testing device comprises:
a main body unit, comprising: the device comprises a test platform, mounting seats symmetrically arranged on the test platform, and a winding roller and an unwinding roller which are respectively and rotatably arranged on the mounting seats at two sides, wherein a winding motor and an unwinding motor are respectively and fixedly arranged on the mounting seats at two sides, and the winding motor and the unwinding motor respectively drive the winding roller and the unwinding roller to rotate;
a test unit, comprising: the device comprises a test platform, a test channel, a telescopic cylinder, a tensioning assembly and a pressure monitoring mechanism, wherein the test channel is arranged on the test platform, the telescopic cylinder is symmetrically arranged on the test channel, the tensioning assembly is arranged at the output end of the telescopic cylinder, and the pressure monitoring mechanism is arranged on the upper side of the telescopic cylinder;
a heating unit, comprising: the device comprises heating boxes symmetrically arranged on two sides of a test channel, temperature controllers arranged on the outer sides of the heating boxes, a straight-through pipe arranged in the heating boxes and an electric heating pipe arranged in the straight-through pipe, wherein air flow is introduced into the straight-through pipe, one side of the straight-through pipe is fixedly communicated with a plurality of spray heads, and the spray heads extend to the inner side of the test channel.
As a preferable scheme of the polyimide film high temperature resistance testing device, the invention comprises the following steps: the number of the through pipes is not less than three, one ends of the through pipes penetrating through the heating box are fixedly communicated with the split pipes, the split pipes are fixedly communicated with the air inlet pipes, and the air inlet pipes are connected with the external fan.
As a preferable scheme of the polyimide film high temperature resistance testing device, the invention comprises the following steps: the pressure monitoring mechanism includes: the pressure sensor is fixedly connected with the upper side of the test channel through a fixed column, and a pressure display connected with an electric signal of the pressure sensor is further arranged on the test channel.
As a preferable scheme of the polyimide film high temperature resistance testing device, the invention comprises the following steps: the tensioning assembly includes: the tensioning device comprises a connecting support fixedly arranged at the output end of a telescopic cylinder and tensioning rollers symmetrically and rotationally connected to the connecting support.
As a preferable scheme of the polyimide film high temperature resistance testing device, the invention comprises the following steps: the apparatus further comprises: an air return unit comprising: the exhaust channel is arranged above the test channel, the exhaust fan is arranged on the inner side of the exhaust channel, the cover plate is fixedly arranged on the exhaust channel, the exhaust channel is symmetrically and fixedly communicated with an air return compensation pipe, and one end of the air return compensation pipe is communicated with the air inlet pipe.
As a preferable scheme of the polyimide film high temperature resistance testing device, the invention comprises the following steps: guide rollers are symmetrically arranged on two sides of the test channel in a rotating mode, and polyimide films pass through the upper guide roller and the lower guide roller during detection.
As a preferable scheme of the polyimide film high temperature resistance testing device, the invention comprises the following steps: the main body unit further comprises a plurality of supporting legs which are symmetrically and fixedly connected to the bottom side of the test platform, and a shock pad is fixedly connected to the bottom side of each supporting leg.
The testing method using the polyimide film high temperature resistance testing device comprises the following steps:
step one: the winding motor and the unwinding motor control the winding roller and the unwinding roller to rotate, so that the winding and unwinding work of the polyimide film is realized, and the film passes through the guide rollers at two sides;
step two: the connecting support is driven to move up and down through the telescopic cylinder, so that the tensioning roller is controlled to attach to the film, tensioning of the film is achieved, at the moment, the pressure sensor receives the tensioning force change to change the value, and the value is recorded;
step three: the hot air is introduced into the air inlet pipe, the electric heating pipe is started to heat the inner space of the straight-through pipe, the air flow is heated rapidly after passing through the straight-through pipe, heat is blown into the test channel through the spray heads, uniform opposite blowing of the inner part of the test channel is realized through the spray heads on the two sides, and therefore the high-temperature environment temperature of the film is simulated;
step four: along with the gradual rise of the ambient temperature, the film starts to be heated and deformed along with the change of the temperature, at the moment, the pressure value of the pressure sensor is observed again, and the temperature resistance limit of the film is intuitively judged according to the reading judgment.
The invention has the beneficial effects that:
1. according to the invention, through synchronous heating of the electric heating pipes, the air flow sent into the straight-through pipe by the air inlet pipe is contacted with the electric heating pipes, so that heat is uniformly blown out from two sides of the test channel through the spray head, the temperature change of the inner side of the test channel is more uniform, the heating of the film is more uniform, and the realization of test accuracy is facilitated;
2. according to the invention, the film is continuously unreeled after being reeled after the test is finished by one winding and one unwinding of the winding rollers and the unwinding rollers at two sides, and multiple test experiments are carried out according to the experiment requirements, so that the accuracy of the test is improved;
3. according to the invention, the plurality of pressure sensors are arranged, so that the tension force applied to the tension roller naturally changes when the film is deformed at high temperature, and a worker can clearly know whether the film is influenced by high temperature or not only by judging the numerical value change range of the pressure sensors, so that the test result is more visual.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of the overall structure of one side of a polyimide film high temperature resistance testing device according to the present invention;
FIG. 2 is a schematic diagram of the overall structure of the other side of the polyimide film high temperature resistance testing device according to the present invention;
FIG. 3 is a schematic diagram of the internal structure of the exhaust channel of the polyimide film high temperature resistance testing device according to the present invention;
FIG. 4 is a schematic diagram of the internal structure of a test channel of a polyimide film high temperature resistance testing device according to the present invention;
FIG. 5 is a schematic diagram of the internal structure of a heating box of the polyimide film high temperature resistance testing device according to the invention;
fig. 6 is a flow chart of a method for testing high temperature resistance of polyimide film according to the present invention.
In the figure: 100-main body unit, 101-test platform, 102-supporting leg, 103-mounting seat, 104-winding motor, 105-winding roller, 106-unwinding motor, 107-unwinding roller, 200-test unit, 201-test channel, 202-guiding roller, 203-pressure display, 204-top plate, 205-telescopic cylinder, 206-fixed column, 207-pressure sensor, 208-connecting bracket, 209-tensioning roller, 300-heating unit, 301-heating box, 302-temperature controller, 303-air inlet pipe, 304-shunt pipe, 305-straight pipe, 306-electrothermal pipe, 307-nozzle, 400-air return unit, 401-exhaust channel, 402-cover plate, 403-air return compensation pipe and 404-exhaust fan.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present invention in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1 to 5, in one embodiment of the present invention, a device and a method for testing high temperature resistance of a polyimide film are provided, the device includes: the main body unit 100, the test unit 200, the heating unit 300, and the return air unit 400.
Wherein the main body unit 100 includes: test platform 101, symmetry set up mount pad 103 on test platform 101, rotate the wind-up roll 105 and unreeling roller 107 that set up on mount pad 103 of both sides respectively, fixed mounting has wind-up motor 104 and unreeling motor 106 on the mount pad 103 of both sides respectively, and wind-up motor 104 and unreeling motor 106 drive wind-up roll 105, unreeling roller 107 rotation respectively, and main part unit 100 still includes a plurality of supporting legs 102 of symmetry fixed connection at test platform 101 bottom side, the bottom side of every supporting leg 102 all fixedly connected with shock pad.
The test unit 200 includes: test channel 201, symmetry that set up on test platform 101 set up on test channel 201 stretch out and draw back cylinder 205, set up in the tensioning assembly of stretch out and draw back cylinder 205 output and set up in the pressure monitoring mechanism of stretch out and draw back cylinder 205 upside, pressure monitoring mechanism includes: the top plate 204 of fixed connection in flexible cylinder 205 top side, top plate 204 bottom side symmetry is provided with pressure sensor 207, and pressure sensor 207 passes through fixed column 206 and the upside fixed connection of test channel 201, still installs on the test channel 201 and is provided with the pressure display 203 with pressure sensor 207 electrical signal connection.
Further, the tensioning assembly includes: the connecting support 208 fixedly arranged at the output end of the telescopic cylinder 205 and the tensioning rollers 209 symmetrically and rotationally connected to the connecting support 208 are contacted and attached with the film when the tensioning rollers 209 are pressed down, namely, the tensioning force of the film is changed, the pressure sensor 207 is used for detecting the change of the tension after the tensioning rollers 209 are contacted with the film, when the film is subjected to high-temperature deformation, the relaxation is necessarily generated, the pressure of the pressure sensor 207 is also changed along with the relaxation, the pressure display 203 is used for displaying the change range of the numerical value, the guide rollers 202 are symmetrically and rotationally arranged on two sides of the testing channel 201, and the polyimide film passes through the upper guide roller 202 and the lower guide roller 202 when being detected. Avoiding the membrane jumping in and out of the test tunnel 201.
The heating unit 300 includes: the device comprises a heating box 301 symmetrically arranged at two sides of a test channel 201, a temperature controller 302 arranged at the outer side of the heating box 301, a straight-through pipe 305 arranged in the heating box 301, and an electric heating pipe 306 arranged in the straight-through pipe 305, wherein air flow is introduced into the straight-through pipe 305, one side of the straight-through pipe 305 is fixedly communicated with a plurality of spray heads 307, the spray heads 307 extend to the inner side of the test channel 201, the number of the straight-through pipes 305 is not less than three, one ends of the plurality of straight-through pipes 305 penetrating through the heating box 301 are fixedly communicated with a shunt pipe 304, the shunt pipe 304 is fixedly communicated with an air inlet pipe 303, the air inlet pipe 303 is connected with an external fan, and a gap is reserved between the electric heating pipe 306 and the straight-through pipe 305 when the electric heating pipe 306 is installed, so that the air flow can pass through the gap conveniently;
the return air unit 400 includes: the test device comprises an exhaust channel 401 arranged above the test channel 201, an exhaust fan 404 arranged on the inner side of the exhaust channel 401, and a cover plate 402 fixedly arranged on the exhaust channel 401, wherein the exhaust channel 401 is symmetrically and fixedly communicated with an air return compensation pipe 403, one end of the air return compensation pipe 403 is communicated with an air inlet pipe 303, the exhaust fan 404 generates certain hot air circulation in the test channel 201 when being electrified, and the circulated hot air is used for compensating and feeding into the air inlet pipe 303, so that the waste of experimental heat is reduced.
The testing method of the polyimide film high temperature resistance testing device is used;
the method comprises the following steps:
step one: the winding motor 104 and the unwinding motor 106 control the winding roller 105 and the unwinding roller 107 to rotate, thereby realizing the winding and unwinding work of the polyimide film and allowing the film to pass through between the guide rollers 202 at two sides;
step two: the connecting support 208 is driven to move up and down through the telescopic cylinder 205, so that the tensioning roller 209 is controlled to be attached to the film, tensioning of the film is realized, at the moment, the pressure sensor 207 receives the tensioning force change to change the value, and the value is recorded;
step three: by introducing hot air into the air inlet pipe 303 and simultaneously starting the electric heating pipe 306 to start heating the inner space of the straight-through pipe 305, the air flow is heated rapidly after passing through the straight-through pipe 305, the heat is blown into the test channel 201 through the spray nozzles 307, and uniform opposite blowing of the inner part of the test channel 201 is realized through the spray nozzles 307 on two sides, so that the high-temperature environment temperature of the film is simulated;
step four: with the gradual rise of the ambient temperature, the film starts to be heated and deformed along with the change of the temperature, at the moment, the pressure value of the pressure sensor 207 is observed again, and the temperature resistance limit of the film is intuitively judged according to the reading judgment.
In the invention, the air flow sent into the straight-through pipe 305 by the air inlet pipe 303 is contacted with the electric heating pipe 306 by synchronous heating of the electric heating pipes 306, so that heat is uniformly blown out from two sides of the test channel 201 through the spray nozzle 307, the temperature change of the inner side of the test channel 201 is more uniform, the heating of a film is also more uniform, the test accuracy is convenient to realize, the film is continuously unreeled after the test is finished by one winding and one unwinding roll 107 through the winding and unwinding rolls 105 and the unwinding roll 107 on two sides, the test experiment is carried out for a plurality of times according to the experiment requirement, the test accuracy is improved, and by arranging the plurality of pressure sensors 207, when the film is deformed at a high temperature, the tensioning force born by the tensioning roll 209 is naturally changed, and a worker can clearly know whether the film is influenced by the high temperature or not only by judging the numerical value change range of the pressure sensors 207, so that the test result is more visual.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a polyimide film high temperature resistance capability test device which characterized in that includes:
a main body unit (100) comprising: test platform (101) symmetrically arranged on the test platform
(101) The upper mounting seat (103) and the winding shafts respectively rotatably arranged on the mounting seat (103) at two sides
The roller (105) and the unreeling roller (107) are respectively and fixedly provided with a reeling electricity on the mounting seat (103) at two sides
The winding machine comprises a machine (104) and an unwinding motor (106), wherein the winding motor (104) and the unwinding motor (106) are respectively arranged
Driving the wind-up roller (105) and the unreeling roller (107) to rotate;
a test unit (200), comprising: a test channel (201) arranged on the test platform (101),
Telescopic air cylinders (205) symmetrically arranged on the test channel (201), and telescopic air cylinders
(205) Tensioning assembly of output end and pressure monitoring arranged on upper side of telescopic cylinder (205)
A mechanism;
a heating unit (300) comprising: heating symmetrically arranged at two sides of the test channel (201)
A tank (301), a temperature controller (302) arranged outside the heating tank (301), and a control unit arranged outside the heating tank
A through pipe (305) in the heating box (301), and electricity installed in the through pipe (305)
A heat pipe (306) for introducing air flow into the straight-through pipe (305), one side of the straight-through pipe (305) being fixed
A plurality of spray heads (307) are communicated, and the spray heads (307) extend to the inner side of the test channel (201).
2. The polyimide film high temperature resistance testing device according to claim 1, wherein
The method comprises the following steps: the number of the through pipes (305) is not less than three, and a plurality of the through pipes (305) pass through
One end of the heating box (301) is fixedly communicated with a shunt tube (304), and the shunt tube (304) is fixedly connected with
An air inlet pipe (303) is communicated, and the air inlet pipe (303) is connected with an external fan.
3. The polyimide film high temperature resistance testing device according to claim 2, characterized in that
The method comprises the following steps: the pressure monitoring mechanism includes: a top plate (204) fixedly connected to the top side of the telescopic cylinder (205),
the bottom side of the top plate (204) is symmetrically provided with pressure sensors (207), and the pressure sensors (207)
Is fixedly connected with the upper side of the test channel (201) through a fixing column (206), and the test channel (201)
A pressure display (203) connected with the pressure sensor (207) through an electric signal is arranged on the pressure sensor.
4. The polyimide film high temperature resistance testing device according to claim 3, wherein
The method comprises the following steps: the tensioning assembly includes: connecting bracket fixedly arranged at output end of telescopic cylinder (205)
(208) And tensioning rollers (209) symmetrically rotatably connected to the connecting bracket (208).
5. The polyimide film high temperature resistance test device according to claim 4, wherein
The method comprises the following steps: the apparatus further comprises: -a return air unit (400), the return air unit (400) comprising: is arranged at
An exhaust channel (401) above the test channel (201) is arranged in the exhaust channel (401)
A side exhaust fan (404), and a cover plate (402) fixedly arranged on the exhaust passage (401),
the exhaust channel (401) is symmetrically and fixedly communicated with an air return compensation pipe (403), and the air return compensation pipe is used for supplementing air
One end of the compensation pipe (403) is communicated with the air inlet pipe (303).
6. The polyimide film high temperature resistance test device according to claim 5, wherein
The method comprises the following steps: the two sides of the test channel (201) are symmetrically provided with guide rollers (202) in a rotating way, and polyimide
The film passes through the upper and lower guide rollers (202) during detection.
7. The polyimide film high temperature resistance test device according to claim 6, wherein
The method comprises the following steps: the main body unit (100) also comprises a plurality of symmetrical fixing connection at the bottom side of the test platform (101)
And the bottom side of each supporting leg (102) is fixedly connected with a shock pad.
8. The testing method of the polyimide film high-temperature resistance testing device according to claim 7
The method is characterized in that: the method comprises the following steps:
step one: the winding roller (105) is controlled by a winding motor (104) and an unwinding motor (106)
The unwinding roller (107) rotates to realize the winding and unwinding of the polyimide film and to allow the film to be wound from both sides
The guide rollers (202) pass through;
step two: the connecting bracket (208) is driven to move up and down by the telescopic air cylinder (205), thereby
The tension roller (209) is controlled to attach the film and tension the film, and the pressure sensor (207) receives the film
When the tension changes, the value changes, and the value is recorded;
step three: by introducing hot air into the air inlet pipe (303) and simultaneously starting the electric heating pipe (306) to open
The internal space of the straight-through pipe (305) is heated initially, the air flow is heated rapidly after passing through the straight-through pipe (305),
blowing heat into the test channel (201) through the nozzle (307) through the plurality of nozzles (307) on both sides
The uniform blowing inside the test channel (201) is realized, so that the high-temperature environment temperature of the film is simulated;
step four: with the gradual rise of the ambient temperature, the film begins to be heated and shaped along with the change of the temperature
At this time, the pressure value of the pressure sensor (207) is observed again, and the thin is intuitively judged based on the reading judgment
Temperature resistance limit of the film.
CN202310049868.XA 2023-02-01 2023-02-01 Polyimide film high temperature resistance testing device and method thereof Withdrawn CN116087079A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310049868.XA CN116087079A (en) 2023-02-01 2023-02-01 Polyimide film high temperature resistance testing device and method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310049868.XA CN116087079A (en) 2023-02-01 2023-02-01 Polyimide film high temperature resistance testing device and method thereof

Publications (1)

Publication Number Publication Date
CN116087079A true CN116087079A (en) 2023-05-09

Family

ID=86204071

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310049868.XA Withdrawn CN116087079A (en) 2023-02-01 2023-02-01 Polyimide film high temperature resistance testing device and method thereof

Country Status (1)

Country Link
CN (1) CN116087079A (en)

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