Acid and alkali resistance detection device for polyolefin film

Abstract

The utility model discloses a polyolefin film acid and alkali resistance detection device which comprises an experiment container, a rotating shaft is fixedly installed on the inner wall face of the experiment container, a rotating wheel is rotationally sleeved on the surface of the rotating shaft, and a polyolefin film material is attached to the surface of the rotating wheel in a rolling mode. And a damping rotating shaft is fixedly mounted on one side of the inner wall of the experimental container and is positioned on the left upper part of the rotating shaft. According to the utility model, the fixed roller, the rotating wheel, the fixed wheel and the arc-shaped thin plate are arranged, and the included angle formed by cutting one end of a polyolefin film material into the liquid surface is changed through the arc-shaped thin plate on the fixed roller, so that the liquid surface tension can be broken to the maximum extent, and the contact area and length of the polyolefin film material and the liquid surface are reduced; therefore, bubbles in the air are prevented from being carried below the liquid level by the polyolefin film material, the influence of the bubbles on the solution detection process is reduced, and finally the intuition degree and the data accuracy of the polyolefin film material detected by an impregnation method are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of acid and alkali resistance detection of polyolefin films, in particular to an acid and alkali resistance detection device for polyolefin films. Background Art

[0002] Polyolefins usually refer to a class of thermoplastic resins obtained by polymerization or copolymerization of α-olefins such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 4-methyl-1-pentene, and some cyclic olefins. Polyolefin film is a new type of agricultural film produced by using raw materials of advanced olefins and other additives and external spray drying process. It usually refers to polymers of ethylene, propylene or advanced olefins, among which ethylene (PE) and propylene (PP) are the most important. After the production of polyolefin film is completed, it is usually necessary to conduct acid and alkali resistance testing to ensure that the corrosion resistance of polyolefin film after leaving the factory meets its common standards. The usual acid and alkali resistance test is mainly carried out by immersion method. The main process of immersion method is as follows: first prepare the test sample, prepare acid or alkali solution of different concentrations as needed, and then put the test sample into acid or alkali solution of different concentrations, and usually need to be tested at different temperatures. Finally, observe the changes of the test sample, such as weight change, color change, surface morphology change, etc., and record the test results.

[0003] At present, when polyolefin membranes pass the immersion test, due to their long strip shape and large overall width, when entering the test liquid, the surface of the material is easy to entrain air and bring it into the solution, resulting in local gaps between the material and the test liquid, thereby affecting the overall test effect of the sample and its intuitive changes, and further causing certain errors in the morphological changes and test structure of subsequent test samples, ultimately affecting the inspector's confirmation of the quality of the test samples produced in this batch, making it impossible to effectively guarantee the quality of the finished product. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a polyolefin film acid and alkali resistance detection device, which solves the specific problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polyolefin film acid and alkali resistance detection device, comprising an experimental container, the interior of the experimental container is filled with a detection solution, a rotating shaft is fixedly installed on the inner wall surface of the experimental container, a rotating wheel is rotatably mounted on the surface of the rotating shaft, and a polyolefin film material is rolled and bonded to the surface of the rotating wheel, a damping rotating shaft is fixedly installed on one side of the inner wall of the experimental container and located at the upper left of the rotating shaft, a fixed roller is mounted on the shaft surface of the damping rotating shaft, an arc-shaped thin plate is inlaid on one side of the surface of the fixed roller, and support ribs are equidistantly installed on the side of the arc-shaped thin plate close to the fixed roller from left to right, a fixed wheel is fixedly installed on one side of the inner wall of the experimental container and located at the upper right of the rotating shaft, a supporting side frame is inlaid on the surface of the fixed wheel, and fixing bolts are threadedly installed on the surface of the supporting side frame;

[0006] The distance between the arc-shaped thin plate and the fixed roller increases from left to right. One side of the arc-shaped thin plate is directly inlaid with the surface of the fixed roller, and the other side of the arc-shaped thin plate is installed with a semicircular arc surface, and a relative seal is formed between the semicircular arc surface and the surface of the fixed roller. The two ends of the support rib extend to the interior of the arc-shaped thin plate and the fixed roller respectively, and are inlaid between the two. The length of the support rib is consistent with the length of the fixed roller.

[0007] Preferably, a hemispherical block is embedded in the bottom end of the fixing bolt, and the diameter of the hemispherical block ranges from one centimeter to two centimeters.

[0008] Preferably, a rubber cushion layer is fixedly bonded to the surface of the hemispherical block, a rubber gasket is sleeved on the surface of the fixing bolt, and the surface of the rubber cushion layer is provided with anti-slip patterns.

[0009] Preferably, one side of the polyolefin film material is in sliding contact with the surface of the fixed roller, and the other side of the polyolefin film material is in sliding contact with the surface of the fixed wheel, and is detachably fixed to the surface of the fixed wheel by a hemispherical block.

[0010] Preferably, the angle between the rotating wheel and the fixed roller is smaller than the angle between the rotating wheel and the fixed wheel.

[0011] Preferably, the rotating wheel, the fixed roller and the fixed wheel are all made of corrosion-resistant materials.

[0012] Preferably, the internal cavity of the experimental container is rectangular.

[0013] The utility model provides a polyolefin film acid and alkali resistance detection device, which has the following beneficial effects:

[0014] (1) The utility model sets a fixed roller, a rotating wheel, a fixed wheel and an arc-shaped thin plate, and changes the angle at which one end of the polyolefin film material cuts into the liquid surface through the arc-shaped thin plate on the fixed roller, thereby maximizing the breaking of liquid surface tension and reducing the contact area and length between the polyolefin film material and the liquid surface, thereby preventing bubbles in the air from being entrained below the liquid surface by the polyolefin film material, thereby reducing the influence of bubbles on the solution detection process, and ultimately ensuring the intuitiveness and data accuracy of the polyolefin film material after the immersion method test, ensuring that the inspector can accurately confirm the quality of the test samples produced in this batch, and ensuring the factory quality of the finished product.

[0015] (2) The utility model provides a hemispherical block, a fixed wheel and a fixed bolt, and utilizes the mutual cooperation of the hemispherical block and the rubber cushion layer, so that when the hemispherical block is pressed downward on the surface of the polyolefin film material by the fixed bolt, it can effectively form contact with the surface of the polyolefin film material, thereby effectively clamping and fixing the polyolefin film material by the fixed wheel and the hemispherical block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure when the arc-shaped thin plate of the utility model rotates to the maximum angle;

[0019] Figure 4 It is a schematic diagram of the overall structure of the fixed roller of the utility model.

[0020] The accompanying drawings are marked as follows: 1. experimental container; 2. detection solution; 3. rotating shaft; 4. rotating wheel; 5. polyolefin film material; 6. damping rotating shaft; 7. fixed roller; 8. arc-shaped thin plate; 9. supporting ribs; 10. fixed wheel; 11. supporting side frame; 12. fixing bolt; 13. hemispherical block; 14. rubber cushion layer; 15. rubber gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As attached Figure 1 To Attachment Figure 4A polyolefin film acid and alkali resistance detection device shown in the figure comprises an experimental container 1, wherein the interior of the experimental container 1 is filled with a detection solution 2 of 1 / 3 to 2 / 3 of its maximum volume, a rotating shaft 3 is fixedly installed on the inner wall surface of the experimental container 1, a rotating wheel 4 is rotatably mounted on the surface of the rotating shaft 3, and a polyolefin film material 5 is rollingly bonded to the surface of the rotating wheel 4, a damping rotating shaft 6 is fixedly installed on one side of the inner wall of the experimental container 1 and located at the upper left of the rotating shaft 3, a fixed roller 7 is mounted on the shaft surface of the damping rotating shaft 6, an arc-shaped thin plate 8 is inlaid on one side of the surface of the fixed roller 7, and support ribs 9 are equidistantly installed on the side of the arc-shaped thin plate 8 close to the fixed roller 7 from left to right, a fixed wheel 10 is fixedly installed on one side of the inner wall of the experimental container 1 and located at the upper right of the rotating shaft 3, a supporting side frame 11 is inlaid on the surface of the fixed wheel 10, and a fixing bolt 12 is threadedly installed on the surface of the supporting side frame 11;

[0023] The shaft hole matching tolerance range between the damping shaft 6 and the fixed roller 7 is between -0.017 mm and -0.006 mm, the arc-shaped thin plate 8 occupies 2 / 3 to 4 / 5 of the overall circumference of the fixed roller 7, and the distance between the arc-shaped thin plate 8 and the fixed roller 7 increases from left to right. One side of the arc-shaped thin plate 8 is directly inlaid with the surface of the fixed roller 7, and the other side of the arc-shaped thin plate 8 is installed with a semicircular arc surface, and a relative seal is formed between the semicircular arc surface and the surface of the fixed roller 7. The two ends of the support rib 9 extend to the interior of the arc-shaped thin plate 8 and the fixed roller 7 respectively, and are inlaid between the two. The length of the support rib 9 is consistent with the length of the fixed roller 7.

[0024] A hemispherical block 13 is embedded in the bottom end of the fixing bolt 12, and the diameter of the hemispherical block 13 ranges from one centimeter to two centimeters. One side of the polyolefin film material 5 is slidably fitted with the surface of the fixed roller 7, and the other side of the polyolefin film material 5 is slidably fitted with the surface of the fixed wheel 10, and is detachably fixed to the surface of the fixed wheel 10 by the hemispherical block 13. The angle between the rotating wheel 4 and the fixed roller 7 is smaller than the angle between the rotating wheel 4 and the fixed wheel 10. The rotating wheel 4, the fixed roller 7 and the fixed wheel 10 are all made of corrosion-resistant materials. The internal cavity of the experimental container 1 is rectangular.

[0025] For details, please refer to the attached manual Figure 1-2 A rubber pad layer 14 is fixedly bonded to the surface of the hemispherical block 13 , a rubber gasket 15 is sleeved on the surface of the fixing bolt 12 , and an anti-skid pattern is provided on the surface of the rubber pad layer 14 .

[0026] The specific implementation method is: by utilizing the cooperation of the hemispherical block 13 and the rubber pad 14, the hemispherical block 13 can effectively form contact with the surface of the polyolefin film material 5 when the surface of the polyolefin film material 5 is pressed downward by the fixing bolt 12, so that the polyolefin film material 5 is effectively clamped and fixed by the fixing wheel 10 and the hemispherical block 13.

[0027] The working principle of this utility model:

[0028] Step 1: First, the operator assembles the various components of the device normally, and then uses the device normally.

[0029] Step 2: First, the operator fixes one end of the polyolefin film material 5 with an existing clamp, and uses tweezers to fit the other end through the surfaces of the fixed roller 7, the rotating wheel 4 and the fixed wheel 10 in turn, and operates the fixing bolt 12 to rotate, and then drives the hemispherical block 1 to uniformly squeeze the surface of the polyolefin film material 5 downward through the fixing bolt 12, and finally the polyolefin film material 5 is effectively clamped by the fixed wheel 10 and the hemispherical block 13. At the same time, when the polyolefin film material 5 slides and fits through the surface of the fixed roller 7, the fixed roller 7 can be adjusted by rotating the damping shaft 6, and the angle of the arc-shaped thin plate 8 on the surface of the fixed roller 7 can be adjusted synchronously. When the olefin film material 5 contacts the thinner end of the arc-shaped thin plate 8, the angle at which one end cuts into the liquid surface is closer to ninety degrees, and the angle between it and the rotor 4 is smaller. When the polyolefin film material 5 approaches ninety degrees and enters the water surface, it can maximize the removal of liquid surface tension and reduce the contact area and length between the polyolefin film material 5 and the liquid surface, thereby preventing bubbles in the air from being entrained by the polyolefin film material 5 below the liquid surface, thereby reducing the impact of bubbles on the solution detection process, and ultimately ensuring the intuitiveness and data accuracy of the polyolefin film material 5 after detection by the immersion method. Finally, the device completes the process of acid and alkali resistance detection of the entire polyolefin film material 5.

[0030] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aging and severely worn parts inside the device.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0032] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A polyolefin film acid and alkali resistance detection device, characterized in that: The experimental container (1) comprises an experimental container (1), wherein the interior of the experimental container (1) is filled with a detection solution (2), a rotating shaft (3) is fixedly mounted on the inner wall surface of the experimental container (1), a rotating wheel (4) is rotatably mounted on the surface of the rotating shaft (3), a polyolefin film material (5) is rollingly bonded to the surface of the rotating wheel (4), a damping rotating shaft (6) is fixedly mounted on one side of the inner wall of the experimental container (1) and located at the upper left of the rotating shaft (3), and a fixed roller is mounted on the shaft surface of the damping rotating shaft (6). A wheel (7), a curved thin plate (8) is inlaid on one side of the fixed roller (7), and support ribs (9) are installed equidistantly from left to right on the side of the curved thin plate (8) close to the fixed roller (7), a fixed wheel (10) is fixedly installed on one side of the inner wall of the experimental container (1) and located on the upper right of the rotating shaft (3), a supporting side frame (11) is inlaid on the surface of the fixed wheel (10), and a fixing bolt (12) is threadedly installed on the surface of the supporting side frame (11); The distance between the arc-shaped thin plate (8) and the fixed roller (7) increases from left to right. One side of the arc-shaped thin plate (8) is directly mounted on the surface of the fixed roller (7). The other side of the arc-shaped thin plate (8) is mounted with a semicircular arc surface, and a relative seal is formed between the semicircular arc surface and the surface of the fixed roller (7). The two ends of the support rib (9) extend to the inside of the arc-shaped thin plate (8) and the fixed roller (7) respectively, and are mounted inside the two. The length of the support rib (9) is consistent with the length of the fixed roller (7).

2. A polyolefin film acid and alkali resistance detection device according to claim 1, characterized in that: A hemispherical block (13) is embedded and installed at the bottom end of the fixing bolt (12), and the diameter of the hemispherical block (13) ranges from one centimeter to two centimeters.

3. A polyolefin film acid and alkali resistance detection device according to claim 2, characterized in that: A rubber cushion layer (14) is fixedly bonded to the surface of the hemispherical block (13), a rubber gasket (15) is sleeved on the surface of the fixing bolt (12), and an anti-slip pattern is provided on the surface of the rubber cushion layer (14).

4. A polyolefin film acid and alkali resistance detection device according to claim 1, characterized in that: One side of the polyolefin film material (5) is in sliding contact with the surface of the fixed roller (7), and the other side of the polyolefin film material (5) is in sliding contact with the surface of the fixed wheel (10), and is detachably fixed to the surface of the fixed wheel (10) via a hemispherical block (13).

5. The device for detecting acid and alkali resistance of polyolefin membrane according to claim 1, characterized in that: The angle between the rotating wheel (4) and the fixed roller (7) is smaller than the angle between the rotating wheel (4) and the fixed wheel (10).

6. A polyolefin film acid and alkali resistance detection device according to claim 5, characterized in that: The rotating wheel (4), the fixed roller (7) and the fixed wheel (10) are all made of corrosion-resistant materials.

7. A polyolefin film acid and alkali resistance detection device according to claim 1, characterized in that: The internal cavity of the experimental container (1) is rectangular.

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