Method for testing performance of high-performance PE film

Abstract

The invention provides a method for testing the performance of a high-performance PE film, and relates to the technical field of PE film testing. The method for testing the performance of the high-performance PE film comprises the following steps: S1, taking a PE film with the length and the width of 1m, clamping the four edges of the PE film by using a movable clamp, and horizontally spreading the PE film; s2, a movable point-shaped light source is installed below the PE film, and light rays generated by the point-shaped light source face the PE film; and S3, a movable photosensitive sensor is installed below the PE film and used for receiving light, and the photosensitive sensor is externally connected with a signal converter and a computer. According to the invention, by utilizing a single light transmission test, not only can the light transmission of the high-performance PE film be tested, but also the uniformity, ductility, tensile resistance, heat resistance, cold resistance, tear resistance and elongation at break of the high-performance PE film can be detected, so that the test cost is low, the test time is short, the data volume embodied by a single test is richer, and the test efficiency is improved. And the test is more comprehensive.

Description

Technical Field

[0001] The invention relates to the technical field of PE film testing, and in particular to a high-performance PE film performance testing method. Background Art

[0002] PE film, full name is polyethylene film, is a film material made of polyethylene resin. Polyethylene is a polymer of ethylene and is one of the most widely used general resins in the world. PE film is moisture-proof and has low moisture permeability. Depending on the manufacturing method and control means, it can be manufactured into products with different properties such as low-density, medium-density, high-density polyethylene and cross-linked polyethylene. PE film is widely used in the construction industry, agriculture and other fields.

[0003] In the existing high-performance PE film performance test, it is generally necessary to perform multiple tests on multiple devices to accurately test the performance of the PE film, which leads to problems such as high testing cost, long testing time, and small amount of data reflected by a single test. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a high-performance PE film performance testing method, which solves the problems of high testing cost, long testing time, and small amount of data reflected by a single test.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented by the following technical scheme: a high-performance PE film performance testing method, comprising the following steps:

[0008] S1. Take a piece of PE film with a length and width of 1m, clamp the four sides with a movable clamp and spread it horizontally;

[0009] S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film;

[0010] S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer;

[0011] S4, move the fixture horizontally to stretch the PE film, and record the extension amount of the PE film;

[0012] S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed;

[0013] S6, recording the light transmittance data per unit area of ​​the PE film received by the photosensitive sensor during the movement of the point light source and the photosensitive sensor;

[0014] S7, remove the PE film, and then measure the length and width of the PE film;

[0015] S8, repeating S4, S5, S6 and S7 multiple times at -30°C to 100°C;

[0016] S9. Record all test data and summarize them.

[0017] Preferably, the signal converter and computer in S3 can convert the electrical signal converted by the light intensity received by the photosensor into visual data, and can visualize the data, thereby facilitating the recording and calculation of various data values.

[0018] Preferably, the unit area of ​​the PE film in S6 is 1 square millimeter. Taking this as a standard, it is convenient to calculate various data of the high-performance PE film.

[0019] Preferably, the movable fixtures are provided with a tensile gauge, and the elongation, tensile strength and elongation at break of the high-performance PE film can be measured by different tensile forces, making the test data of the high-performance PE film more comprehensive and richer.

[0020] Preferably, the point light source and the photosensitive sensor are arranged correspondingly up and down and move synchronously. When the point light source and the photosensitive sensor move uniformly up and down on the high-performance PE film, the light transmittance can be measured by the photosensitive sensor, and the uniformity of the high-performance PE film can also be measured.

[0021] Preferably, the PE films repeatedly tested in S8 are all from the same production batch, so as to ensure that the high-performance PE films are from the same source during the test, thereby making the measured data more accurate.

[0022] (III) Beneficial effects

[0023] The present invention provides a high-performance PE film performance testing method, which has the following beneficial effects:

[0024] Through the present invention, using a single light transmittance test, not only the light transmittance of the high-performance PE film can be tested, but also the uniformity, ductility, tensile strength, heat and cold resistance, tear resistance and elongation at break of the high-performance PE film can be tested, so that the test cost is low, the test time is short, the amount of data reflected in a single test is richer, and the test is more comprehensive. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1:

[0027] The embodiment of the present invention provides a high-performance PE film performance testing method, comprising the following steps:

[0028] S1. Under -30℃ environment, take a piece of PE film with a length and width of 1m, clamp the four sides with movable clamps and then spread it horizontally;

[0029] S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film;

[0030] S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer;

[0031] S4, move the fixture horizontally to stretch the PE film, and record the extension amount of the PE film;

[0032] S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed;

[0033] S6, recording the point light source and the photosensor during movement, the photosensor receives the light transmittance data per unit area of ​​the PE film and transmits it to the signal converter and the computer;

[0034] S7, remove the PE film, and then measure the length and width of the PE film;

[0035] S8. Record all test data and summarize them.

[0036] The signal converter and computer in S3 can convert the electrical signals converted from the light intensity received by the photosensor into visual data.

[0037] The unit area of ​​the PE film in S6 is 1 square millimeter.

[0038] The movable fixtures are all equipped with dynamometers.

[0039] The point light source and the light-sensitive sensor are arranged correspondingly up and down, and move synchronously.

[0040] Embodiment 2:

[0041] A high-performance PE film performance testing method comprises the following steps:

[0042] S1. Under 0℃ environment, take a piece of PE film with a length and width of 1m, clamp the four sides with movable clamps and then spread it horizontally;

[0043] S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film;

[0044] S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer;

[0045] S4, move the fixture horizontally to stretch the PE film, and record the extension amount of the PE film;

[0046] S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed;

[0047] S6, recording the point light source and the photosensor during movement, the photosensor receives the light transmittance data per unit area of ​​the PE film and transmits it to the signal converter and the computer;

[0048] S7, remove the PE film, and then measure the length and width of the PE film;

[0049] S8. Record all test data and summarize them.

[0050] The signal converter and computer in S3 can convert the electrical signals converted from the light intensity received by the photosensor into visual data.

[0051] The unit area of ​​the PE film in S6 is 1 square millimeter.

[0052] The movable fixtures are all equipped with dynamometers.

[0053] The point light source and the light-sensitive sensor are arranged correspondingly up and down, and move synchronously.

[0054] Embodiment three:

[0055] A high-performance PE film performance testing method comprises the following steps:

[0056] S1. Under 10℃ environment, take a piece of PE film with a length and width of 1m, clamp the four sides with movable clamps and then spread it horizontally;

[0057] S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film;

[0058] S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer;

[0059] S4, move the fixture horizontally to stretch the PE film, and record the extension amount of the PE film;

[0060] S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed;

[0061] S6, recording the point light source and the photosensor during movement, the photosensor receives the light transmittance data per unit area of ​​the PE film and transmits it to the signal converter and the computer;

[0062] S7, remove the PE film, and then measure the length and width of the PE film;

[0063] S8. Record all test data and summarize them.

[0064] The signal converter and computer in S3 can convert the electrical signals converted from the light intensity received by the photosensor into visual data.

[0065] The unit area of ​​the PE film in S6 is 1 square millimeter.

[0066] The movable fixtures are all equipped with dynamometers.

[0067] The point light source and the light-sensitive sensor are arranged correspondingly up and down, and move synchronously.

[0068] Embodiment 4:

[0069] A high-performance PE film performance testing method comprises the following steps:

[0070] S1. Under 30℃ environment, take a piece of PE film with a length and width of 1m, clamp the four sides with movable clamps and then spread it horizontally;

[0071] S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film;

[0072] S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer;

[0073] S4, move the fixture horizontally to stretch the PE film, and record the extension amount of the PE film;

[0074] S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed;

[0075] S6, recording the point light source and the photosensor during movement, the photosensor receives the light transmittance data per unit area of ​​the PE film and transmits it to the signal converter and the computer;

[0076] S7, remove the PE film, and then measure the length and width of the PE film;

[0077] S8. Record all test data and summarize them.

[0078] The signal converter and computer in S3 can convert the electrical signals converted from the light intensity received by the photosensor into visual data.

[0079] The unit area of ​​the PE film in S6 is 1 square millimeter.

[0080] The movable fixtures are all equipped with dynamometers.

[0081] The point light source and the light-sensitive sensor are arranged correspondingly up and down, and move synchronously.

[0082] Embodiment five:

[0083] A high-performance PE film performance testing method comprises the following steps:

[0084] S1. Under 60℃ environment, take a piece of PE film with a length and width of 1m, clamp the four sides with movable clamps and then spread it horizontally;

[0085] S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film;

[0086] S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer;

[0087] S4, move the fixture horizontally to stretch the PE film, and record the extension amount of the PE film;

[0088] S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed;

[0089] S6, recording the point light source and the photosensor during movement, the photosensor receives the light transmittance data per unit area of ​​the PE film and transmits it to the signal converter and the computer;

[0090] S7, remove the PE film, and then measure the length and width of the PE film;

[0091] S8. Record all test data and summarize them.

[0092] The signal converter and computer in S3 can convert the electrical signals converted from the light intensity received by the photosensor into visual data.

[0093] The unit area of ​​the PE film in S6 is 1 square millimeter.

[0094] The movable fixtures are all equipped with dynamometers.

[0095] The point light source and the light-sensitive sensor are arranged correspondingly up and down, and move synchronously.

[0096] Embodiment six:

[0097] A high-performance PE film performance testing method comprises the following steps:

[0098] S1. Under 100℃ environment, take a piece of PE film with a length and width of 1m, clamp the four sides with movable clamps and then spread it horizontally;

[0099] S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film;

[0100] S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer;

[0101] S4, move the fixture horizontally to stretch the PE film, and record the extension amount of the PE film;

[0102] S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed;

[0103] S6, recording the point light source and the photosensor during movement, the photosensor receives the light transmittance data per unit area of ​​the PE film and transmits it to the signal converter and the computer;

[0104] S7, remove the PE film, and then measure the length and width of the PE film;

[0105] S8. Record all test data and summarize them.

[0106] The signal converter and computer in S3 can convert the electrical signals converted from the light intensity received by the photosensor into visual data.

[0107] The unit area of ​​the PE film in S6 is 1 square millimeter.

[0108] The movable fixtures are all equipped with dynamometers.

[0109] The point light source and the light-sensitive sensor are arranged correspondingly up and down, and move synchronously.

[0110] The high-performance PE film was tested by the methods of Example 1, Example 2, Example 3, Example 4, Example 5 and Example 6, and various data were obtained and recorded respectively, as shown in Tables 1 and 2 below, wherein Table 1 shows the data on the rupture resistance and elongation at rupture of the high-performance PE film obtained by testing Example 1, Example 2, Example 3, Example 4, Example 5 and Example 6 when the tension on the four sides is 5 KN.

[0111] Table 1

[0112] temperature Light transmittance Uniformity Elongation Elongation Embodiment 1 -30℃ 90％ 98％ 0.9％ 98％ Embodiment 2 0℃ 90％ 98％ 0.95％ 97.5％ Embodiment 3 10℃ 90％ 98％ 1％ 97％ Embodiment 4 30℃ 90％ 98％ 1.1％ 96.7％ Embodiment 5 60℃ 90％ 98％ 1.2％ 95％ Embodiment 6 100℃ 90％ 98％ 1.4％ 91％

[0113] Table 2

[0114]

[0115] It can be seen from Table 1 that when the four-side tensile force is 5KN, the transmittance and uniformity at different temperatures are the same, and with the increase of temperature, the elongation of the high-performance PE film becomes larger and larger. Finally, after the high-performance PE film is removed, the final tensile strength becomes smaller and smaller, indicating that the temperature has a greater impact on the high-performance PE film. It can be seen from Table 2 that under different four-side tensile forces and temperatures, the high-performance PE film has good tensile strength. When it is broken, the elongation at break also increases, indicating that the high-performance PE film still has good ductility after breaking. At different temperatures, the performance displayed by the high-performance PE film also shows that it has obvious heat and cold resistance.

[0116] In summary, the testing method of the present invention can test multiple data of high-performance PE film more comprehensively and quickly, which not only reduces the testing cost but also improves the testing efficiency.

[0117] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high performance PE film performance testing method, characterized in that: The following steps are involved: S1. Take a piece of PE film with a length and width of 1m, clamp the four sides with a movable clamp and spread it horizontally; S2, a movable point light source is installed below the PE film, and the light generated by the point light source is directed toward the PE film; S3, a movable photosensor is installed under the PE film to receive light, and the photosensor is externally connected to a signal converter and a computer; S4, horizontally move the fixture to stretch the PE film, and record the extension amount of the PE film; S5, start the point light source and the photosensitive sensor to move them up and down the PE film at a uniform speed; S6, recording the light transmittance data per unit area of ​​the PE film received by the photosensitive sensor during the movement of the point light source and the photosensitive sensor; S7, remove the PE film, and then measure the length and width of the PE film; S8, repeating S4, S5, S6 and S7 multiple times at -30°C to 100°C; S9. Record all test data and summarize them.

2. A high performance PE film performance testing method according to claim 1, characterized in that: The signal converter and computer in S3 can convert the electrical signal converted from the light intensity received by the photosensor into visual data.

3. A high performance PE film performance testing method according to claim 1, characterized in that: The unit area of ​​the PE film in S6 is 1 square millimeter.

4. A high performance PE film performance testing method according to claim 1, characterized in that: The movable clamps are all provided with dynamometers.

5. A high performance PE film performance testing method according to claim 1, characterized in that: The point light source and the photosensitive sensor are arranged correspondingly up and down and move synchronously.

6. A high performance PE film performance testing method according to claim 1, characterized in that: The PE films repeatedly tested in S8 are all PE films from the same production batch.

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