CN219337458U

CN219337458U - Polyimide film water absorption testing device

Info

Publication number: CN219337458U
Application number: CN202223384971.XU
Authority: CN
Inventors: 陈建俊; 贾斌; 范圣男
Original assignee: Minseoa Beijing Advanced Materials Development Co Ltd
Current assignee: Minseoa Beijing Advanced Materials Development Co Ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-07-14
Anticipated expiration: 2032-12-15

Abstract

The utility model relates to a polyimide film water absorption testing device, which comprises: the outer cylinder is used for containing pure water, and the top of the outer cylinder is provided with an open end; the inner support bottom plate can be arranged in the outer cylinder through the opening end of the outer cylinder; the support frame is arranged on the periphery of the outer cylinder, and the top end of the support frame is higher than the height of the outer cylinder; one end of each of the plurality of pull rods is fixedly connected with the support frame, and the other ends of the plurality of pull rods are fixedly connected with the inner support bottom plate so that the inner support bottom plate is horizontally fixed on the support frame; the upright posts are vertically fixed on the inner support bottom plate; the clamp is arranged on the vertical rod and used for clamping a polyimide film sample to be tested; and the lifting platform is arranged below the outer cylinder and is used for carrying the outer cylinder and lifting. The utility model is suitable for testing the water absorption of the polyimide film which is not easy to be immersed in water, is convenient to operate, greatly reduces the pressed area of the polyimide film sample piece to be tested, and improves the accuracy of the water absorption test result of the polyimide film.

Description

Polyimide film water absorption testing device

Technical Field

The utility model relates to the technical field of material testing, in particular to a polyimide film water absorption testing device.

Background

The water absorption of plastics is a measure of the water absorption of plastics at standard atmospheric pressure. The water absorption of plastics is determined by the number and size of voids, the arrangement of particles, the existence of polar groups in the main chain with little molecular movement, the water resistance of the plastics, and other factors in a normal temperature range.

Polyimide is a polymer with imide ring in the main chain and is one of the organic polymer materials with optimal comprehensive performance. Polyimide is widely used as a special engineering material in the fields of aviation, aerospace, microelectronics, nanometer, liquid crystal, separation membrane, laser and the like, and is particularly attractive in the application of electronic and electrical equipment. As more and more electronic and electric devices tend to be miniaturized and highly integrated, polyimide is often used as a base film material of a flexible circuit board, and it is required to have high dimensional stability. And water absorption is one of the important indexes for measuring the dimensional stability, so it is necessary to test the water absorption of the polyimide film.

Because the polyimide film is very light, the polyimide film can float on the water surface and cannot be completely immersed in water without external force when the water absorption rate of the polyimide film is tested. Currently, a test method commonly used in laboratories uses a weight (e.g., a stainless steel block) to force a polyimide film against the bottom of a container (e.g., a glass beaker) containing water. However, since the beaker space is narrow, the above-mentioned test method is inconvenient to operate when placing and taking out the polyimide film and the weight, if the polyimide film and the beaker may be crashed if the polyimide film and the beaker are carelessly dropped when placing the weight, and the contact area between the weight and the bottom of the beaker and the polyimide film is large, so that the place where the polyimide film is held by the weight and the bottom of the beaker cannot be fully contacted with water, thereby resulting in lower accuracy of the water absorption test result.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a polyimide film water absorption testing device, which aims to reduce the pressed area of a polyimide film sample to be tested and improve the accuracy of a polyimide film water absorption testing result.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a polyimide film water absorption testing device, comprising: the outer cylinder is used for containing pure water, and the top of the outer cylinder is provided with an open end; an inner support bottom plate which can be placed in the outer cylinder through the opening end of the outer cylinder; a support frame arranged on the periphery of the outer cylinder, and the top end of the support frame is higher than the height of the outer cylinder; one end of each pull rod is fixedly connected with the supporting frame, and the other ends of the pull rods are fixedly connected with the inner supporting bottom plate so that the inner supporting bottom plate is horizontally fixed on the supporting frame; the upright posts are vertically fixed on the inner support bottom plate; the clamp is arranged on the vertical rod and used for clamping a polyimide film sample to be tested; and the lifting platform is arranged below the outer cylinder and is used for carrying the outer cylinder and lifting.

The polyimide film water absorption testing device preferably further comprises a cover plate, wherein the cover plate is matched with the opening end of the outer cylinder and is used for sealing the opening end of the outer cylinder, and a semicircular handle is arranged at the center of the cover plate.

In the polyimide film water absorption testing device, preferably, a water inlet and a water outlet with valves are arranged on the outer cylinder, the water inlet is arranged on the upper part of one side of the outer cylinder, the water outlet is arranged on the lower part of the other side of the outer cylinder opposite to the water inlet, the water inlet is suitable for being connected with a water delivery pipe and used for injecting pure water into the outer cylinder, and the water outlet is used for discharging the pure water in the outer cylinder.

In the polyimide film water absorption testing device, preferably, the outer cylinder and the inner supporting bottom plate are square, and the surface area of the inner supporting bottom plate is smaller than the bottom area of the outer cylinder, so that the inner supporting bottom plate can be placed in the outer cylinder.

In the polyimide film water absorption testing device, preferably, the inner support bottom plate is provided with a plurality of upright rod mounting holes, and the upright rods are vertically mounted on the inner support bottom plate through the upright rod mounting holes.

The polyimide film water absorption testing device is characterized in that preferably, a plurality of clamps are installed on each vertical rod at intervals along the height direction, the lower clamping plate of each clamp is longer than the upper clamping plate, the lower clamping plates are installed on the vertical rods, the included angle between the lower clamping plates and the vertical rods is 90 degrees, and meanwhile, the upper clamping plates of each clamp are engraved with digital numbers for distinguishing polyimide film sample pieces to be tested with different marks.

Polyimide film water absorption testing arrangement, preferably, the support frame comprises two horizontal poles, two montants and four bracing piece fixed connection, and two the length of horizontal pole is longer than the length of interior support bottom plate, two the length of perpendicular pole equals interior support bottom plate's width, two montant fixed connection be in two between the horizontal pole and with two broadsides parallel of interior support bottom plate, four bracing piece symmetry fixed connection respectively is in two the both ends point department of horizontal pole.

The polyimide film water absorption testing device is characterized in that preferably four pull rods are arranged, the lower ends of the four pull rods are fixedly connected with four corners of the inner supporting bottom plate respectively, and the upper ends of the four pull rods are fixedly connected with four connecting positions of two cross rods and two vertical rods respectively so as to fix the inner supporting bottom plate on the supporting frame.

In the polyimide film water absorption testing device, preferably, the upper ends of the left side surface and the right side surface of the outer cylinder are respectively provided with two grooves matched with the length and the width of the bottom surface of the cross rod of the supporting frame.

Due to the adoption of the technical scheme, the utility model has the following advantages:

1. the utility model is suitable for testing the water absorption of the polyimide film which is not easy to be immersed in water, is convenient to operate, greatly reduces the pressed area of the polyimide film sample piece to be tested, and improves the accuracy of the water absorption test result of the polyimide film.

2. According to the utility model, the number of the mounting upright rods and the clamps can be selected according to actual test requirements, so that the water absorption rate of a plurality of polyimide film samples can be tested simultaneously, the test time is shortened, and the test efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a polyimide film water absorption testing device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the structure of the inner support base plate, the pull rod and the support frame according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of an outer cylinder according to an embodiment of the present utility model.

The figures are marked as follows:

1-an outer cylinder; 2-an inner supporting bottom plate; 3-pull rod; 4-supporting frames; 5-cover plate; 6-a water inlet; 7-a water outlet; 8-standing a pole; 9-clamping; 10-lifting table.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "front", "rear", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Moreover, the use of the terms first, second, etc. to define elements is merely for convenience in distinguishing the elements from each other, and the terms are not specifically meant to indicate or imply relative importance unless otherwise indicated.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The utility model provides a polyimide film water absorption testing device, which comprises: the outer cylinder is used for containing pure water, and the top of the outer cylinder is provided with an open end; the inner support bottom plate can be arranged in the outer cylinder through the opening end of the outer cylinder; the support frame is arranged on the periphery of the outer cylinder, and the top end of the support frame is higher than the height of the outer cylinder; one end of each of the plurality of pull rods is fixedly connected with the support frame, and the other ends of the plurality of pull rods are fixedly connected with the inner support bottom plate so that the inner support bottom plate is horizontally fixed on the support frame; the upright posts are vertically fixed on the inner support bottom plate; the clamp is arranged on the vertical rod and used for clamping a polyimide film sample to be tested; and the lifting platform is arranged below the outer cylinder and is used for carrying the outer cylinder and lifting. The utility model is suitable for testing the water absorption of the polyimide film which is not easy to be immersed in water, is convenient to operate, greatly reduces the pressed area of the polyimide film sample piece to be tested, and improves the accuracy of the water absorption test result of the polyimide film.

The polyimide film water absorption testing device provided by the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the polyimide film water absorption testing device provided in this embodiment includes: an outer cylinder 1 for holding pure water, and the top of the outer cylinder 1 has an open end; an inner support bottom plate 2 which can be placed in the outer cylinder 1 through the opening end of the outer cylinder 1; a support frame 4 disposed at the outer circumference of the outer cylinder 1, and a top end of the support frame 4 is higher than the outer cylinder 1; the pull rods 3, one end of each pull rod 3 is fixedly connected with the support frame 4, and the other end of each pull rod 3 is fixedly connected with the inner support bottom plate 2, so that the inner support bottom plate 2 is horizontally fixed on the support frame 4; the upright posts 8, a plurality of upright posts 8 are vertically fixed on the inner support bottom plate 2; the clamp 9 is arranged on the vertical rod 8 and used for clamping a polyimide film sample to be tested; the lifting table 10 is provided below the outer cylinder 1, and is used for carrying the outer cylinder 1 and lifting. Through the arrangement, when water absorption test is needed, firstly, the lifting table 10 is downwards adjusted to the lowest position, pure water is injected into the outer cylinder 1, then a polyimide film sample to be tested is clamped on the clamp 9, then the lifting table 10 is upwards adjusted to enable the inner supporting bottom plate 2 to enter the outer cylinder 1, after the polyimide film sample to be tested on the clamp 9 is completely immersed in the pure water, the lifting table 10 stops lifting and stands for a period of time, finally, the lifting table 10 is downwards adjusted to the lowest position again, and the polyimide film sample to be tested on the clamp 9 is taken down, so that the water absorption test can be performed.

In the above embodiment, it is preferable that the device further includes a cover plate 5, where the cover plate 5 is matched with the open end of the outer cylinder 1 and is used for sealing the open end of the outer cylinder 1, and a semicircular ring handle is disposed at the center of the cover plate 5. Through foretell setting, can prevent to await measuring polyimide film sample piece and fall into impurity when submerging in pure water, the impurity of adsorbing when avoiding taking out the film causes the weighing value inaccurate.

In the above embodiment, it is preferable that the water inlet 6 with a valve and the water outlet 7 are provided on the outer cylinder 1, and the water inlet 6 is provided at an upper portion of one side of the outer cylinder 1, the water outlet 7 is provided at a lower portion of the other side of the outer cylinder 1 opposite to the water inlet 6, the water inlet 6 is adapted to be connected with a water pipe for injecting pure water into the outer cylinder 1, and the water outlet 7 is adapted to discharge pure water in the outer cylinder 1.

In the above embodiment, it is preferable that both the outer cylinder 1 and the inner tray base 2 are square, and the surface area of the inner tray base 2 is smaller than the bottom area of the outer cylinder 1 so that the inner tray base 2 can be placed in the outer cylinder 1.

In the above embodiment, preferably, as shown in fig. 2, the inner support base plate 2 is provided with a plurality of upright mounting holes, and the upright 8 is vertically mounted on the inner support base plate 2 through the upright mounting holes.

In the above embodiment, preferably, as shown in fig. 1, a plurality of clamps 9 are installed on each upright 8 at intervals along the height direction, the lower clamping plate of the clamps 9 is longer than the upper clamping plate, the lower clamping plate is installed on the upright 8, the included angle between the lower clamping plate and the upright 8 is 90 °, and meanwhile, the upper clamping plate of each clamp 9 is engraved with a digital number for distinguishing and marking different polyimide film samples to be tested. Through the arrangement, one polyimide film sample to be detected can be clamped on each clamp 9 so as to be immersed in water, and the effective clamping area between the clamp 9 and the polyimide film sample to be detected is as small as possible on the premise of ensuring that the polyimide film sample to be detected can be clamped and is not damaged, so that the clamped area of the polyimide film sample to be detected is greatly reduced, and the accuracy of the polyimide film water absorption test result is improved; and moreover, the quantity of the mounting upright rods 8 and the clamps 9 can be selected according to actual test requirements, so that the water absorption of a plurality of polyimide film sample pieces to be tested can be tested simultaneously, the test time is shortened, and the test efficiency is improved.

In the above embodiment, preferably, as shown in fig. 2, the supporting frame 4 is formed by fixedly connecting two cross bars, two vertical bars and four supporting bars, the lengths of the two cross bars are longer than the length of the inner supporting bottom plate 2, the lengths of the two vertical bars are equal to the width of the inner supporting bottom plate 2, the two vertical bars are fixedly connected between the two cross bars and parallel to two wide edges of the inner supporting bottom plate 2, and the four supporting bars are respectively and symmetrically fixedly connected at two end points of the two cross bars.

In the above embodiment, preferably, the number of the tie rods 3 is four, the lower ends of the four tie rods 3 are fixedly connected with four corners of the inner bottom plate 2 respectively, and the upper ends of the four tie rods 3 are fixedly connected with four joints of the two cross bars and the two vertical bars respectively, so that the inner bottom plate 2 is fixed on the support frame 4.

In the above embodiment, preferably, as shown in fig. 3, the upper ends of the left side surface and the right side surface of the outer cylinder 1 are respectively provided with two grooves matched with the length and the width of the bottom surface of the cross bar of the support frame 4. Through the arrangement, the opening end of the outer cylinder 1 can be tightly attached to the lower surface of the cover plate 5, so that the effect of sealing the outer cylinder 1 is achieved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The polyimide film water absorption testing device is characterized by comprising:

the outer cylinder is used for containing pure water, and the top of the outer cylinder is provided with an open end;

an inner support bottom plate which can be placed in the outer cylinder through the opening end of the outer cylinder;

a support frame arranged on the periphery of the outer cylinder, and the top end of the support frame is higher than the height of the outer cylinder;

one end of each pull rod is fixedly connected with the supporting frame, and the other ends of the pull rods are fixedly connected with the inner supporting bottom plate so that the inner supporting bottom plate is horizontally fixed on the supporting frame;

the upright posts are vertically fixed on the inner support bottom plate;

the clamp is arranged on the vertical rod and used for clamping a polyimide film sample to be tested;

and the lifting platform is arranged below the outer cylinder and is used for carrying the outer cylinder and lifting.

2. The polyimide film water absorption testing device according to claim 1, further comprising a cover plate, wherein the cover plate is matched with the open end of the outer cylinder and is used for sealing the open end of the outer cylinder, and a semicircular handle is arranged at the center of the cover plate.

3. The polyimide film water absorption test device according to claim 1, wherein a water inlet and a water outlet with valves are provided on the outer cylinder, and the water inlet is provided at an upper portion of one side of the outer cylinder, the water outlet is provided at a lower portion of the other side of the outer cylinder opposite to the water inlet, the water inlet is adapted to be connected with a water pipe for injecting pure water into the outer cylinder, and the water outlet is adapted to discharge pure water in the outer cylinder.

4. The polyimide film water absorption test device according to claim 1, wherein the outer cylinder and the inner tray base are square, and the surface area of the inner tray base is smaller than the bottom area of the outer cylinder, so that the inner tray base can be placed in the outer cylinder.

5. The polyimide film water absorption testing device according to claim 1, wherein a plurality of upright rod mounting holes are formed in the inner support bottom plate, and the upright rods are vertically mounted on the inner support bottom plate through the upright rod mounting holes.

6. The polyimide film water absorption testing device according to claim 5, wherein a plurality of clamps are installed on each upright rod at intervals along the height direction, a lower clamping plate of each clamp is longer than an upper clamping plate, the lower clamping plates are installed on the upright rods, the included angle between the lower clamping plates and the upright rods is 90 degrees, and meanwhile, a digital number is engraved on the upper clamping plate of each clamp for distinguishing and marking different polyimide film sample pieces to be tested.

7. The polyimide film water absorption testing device according to claim 2, wherein the supporting frame is formed by fixedly connecting two cross bars, two vertical bars and four supporting bars, the length of the two cross bars is longer than that of the inner supporting bottom plate, the length of the two vertical bars is equal to that of the inner supporting bottom plate, the two vertical bars are fixedly connected between the two cross bars and parallel to the two wide edges of the inner supporting bottom plate, and the four supporting bars are respectively and symmetrically fixedly connected at two end points of the two cross bars.

8. The polyimide film water absorption testing device according to claim 7, wherein four pull rods are provided, the lower ends of the four pull rods are fixedly connected with four corners of the inner support bottom plate respectively, and the upper ends of the four pull rods are fixedly connected with four connecting positions of the two cross rods and the two vertical rods respectively so as to fix the inner support bottom plate on the support frame.

9. The polyimide film water absorption testing device according to claim 7, wherein the upper ends of the left side surface and the right side surface of the outer cylinder are respectively provided with two grooves matched with the length and the width of the bottom surface of the cross rod of the supporting frame.