Application evaluation method of titanium dioxide for plastics and spot counter

Abstract

The invention relates to a titanium dioxide evaluation method, and provides a plastic titanium dioxide application evaluation method, which comprises the following operation steps: (1) mixing titanium dioxide and resin, and preparing color master batch particles through a plastic extruding machine; (2) mixing the color master batch particles in the step (1) with resin, and detecting a filter pressing value by using an extruder and a filter pressing value tester in sequence; and (3) mixing the color master batch particles in the step (1) with resin, preparing a film by using an extruder and a film blowing machine in sequence, and then detecting the number of spots in the film by using a spot counter. The invention aims to provide a plastic titanium dioxide application evaluation method and a spot counter. The application evaluation of titanium dioxide can be detected more systematically before the titanium dioxide is applied to a specific field.

Description

Technical Field

[0001] The invention relates to the technical field of titanium dioxide evaluation methods, and in particular to an application evaluation method of titanium dioxide for plastics and a spot counter. Background Art

[0002] Titanium dioxide is an important inorganic chemical pigment, the main component of which is titanium dioxide. There are two production processes for titanium dioxide: sulfuric acid process and chlorination process. It has important uses in industries such as coatings, inks, papermaking, plastics and rubber, chemical fibers, and ceramics.

[0003] Although titanium dioxide has many application fields, high-end applications have very high requirements for titanium dioxide, especially in plastics. When titanium dioxide is applied to different types of plastics, the effects it produces and its impact on the performance of the plastic itself are difficult to predict directly. Therefore, before titanium dioxide is used in related applications, it is necessary to conduct application evaluation and testing on it. This can help understand the situation of titanium dioxide in actual application fields and facilitate the positioning of one's own products. Summary of the invention

[0004] The object of the present invention is to provide a titanium dioxide application evaluation method for plastics and a spot counter, which can more systematically detect the application evaluation of titanium dioxide before it is applied to a specific field.

[0005] The present invention is achieved through the following technical solution: The plastic titanium dioxide application evaluation method of the present invention comprises the following operating steps:

[0006] (1) Mixing titanium dioxide and resin into masterbatch particles through an extruder;

[0007] (2) After mixing the masterbatch particles in step (1) with the resin, the filter pressure value is tested using an extruder and a filter pressure value tester in sequence;

[0008] (3) After mixing the masterbatch particles in step (1) with the resin, a film is formed using an extruder and a blown film machine in sequence, and then a spot counter is used to detect the number of spots in the film.

[0009] The present invention also provides a spot counter based on the above-mentioned titanium dioxide application evaluation method for plastics, comprising a base plate, a transparent support plate arranged on the base plate, a light source arranged below the support plate, a hollow reel, and a film feeding device and a film rolling device respectively arranged on opposite sides of the support plate; the film passes through the film feeding device, the support plate, and the film rolling device in sequence; the film feeding device comprises a V-shaped and horizontally arranged first support frame; the film rolling device comprises a V-shaped and horizontally arranged second support frame, a driving block arranged at one end of the second support frame, a first driving device for driving the driving block to rotate, a second driving device for driving the driving block to move along the second support frame, and a storage rod horizontally arranged at one end of the second support frame away from the driving block; the driving block abuts against the end of the reel; the first support frame and the second support frame are both used to support the reel.

[0010] Furthermore, the first driving device includes a horizontally arranged first motor, a limit block provided on the driving block near one end of the reel, and a limit hole opened on the end of the reel near one end of the driving block; the limit block cooperates with the limit hole; and the first motor output shaft is connected to the driving block.

[0011] Furthermore, an insertion rod is provided at one end of the driving block close to the reel, and the insertion rod is inserted in the reel.

[0012] Furthermore, the driving block and the insertion rod are an integral structure and are both hollow structures; a through hole is provided at one end of the driving block close to the first motor, a friction block is provided inside the driving block, and a spring is provided inside the insertion rod; the output shaft of the first motor passes through the through hole and is connected to the friction block, one end of the spring is fixedly connected to the inner wall of the insertion rod, and the other end abuts against the friction block.

[0013] Furthermore, it also includes a traction device arranged between the support plate and the film rolling device; the traction device includes a pair of traction rollers arranged in parallel with each other, gears arranged at the ends of the traction rollers, a driven sprocket arranged at the end of one of the traction rollers, a bracket for supporting the traction roller, a second motor arranged on the bracket, a driving sprocket arranged on the output shaft of the second motor, and a transmission chain for connecting the driving sprocket and the driven sprocket; the film passes through the pair of traction rollers; the gears on the pair of traction rollers are meshed with each other.

[0014] Furthermore, the second driving device includes a slide rail arranged on the base plate, a slider slidably arranged on the slide rail, a screw threadedly connected to the slider, a third motor connected to the screw, and a connecting plate for connecting the first motor and the slider; the length direction of the slide rail is parallel to the length direction of the second support frame.

[0015] Furthermore, a pressure roller is provided above one side of the support plate close to the first support frame; the pressure roller is in contact with the upper surface of the film.

[0016] Furthermore, a support plate is provided above the support plate, a camera is provided on the support plate, and the camera is arranged directly above the support plate and facing the support plate.

[0017] The technical solution of the present invention has at least the following advantages and beneficial effects: the titanium dioxide application evaluation method for plastics and the spot counter of the present invention, by mixing titanium dioxide and resin to form masterbatch particles, and then mixing the masterbatch particles with resin to form a finished product, the finished product can be tested for filter press value to detect the processing fluidity of the finished product, and the film processed from the finished product can be tested for spots to detect the number of spots in the finished product, thereby reflecting the number of coarse particles in the finished product, and through different ratios of titanium dioxide and resin, the actual situation of titanium dioxide in different fields can be detected in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a spot counter provided in Example 2 of the present invention from one viewing angle;

[0020] Figure 2 A schematic diagram of the structure of a spot counter from two viewing angles provided in Example 2 of the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of a spot counter provided in Example 2 of the present invention;

[0022] Figure 4 A schematic diagram of the structure of the bottom plate portion provided in Example 2 of the present invention;

[0023] Figure 5 A schematic diagram of the structure of the traction device part provided in Example 2 of the present invention;

[0024] Figure 6 A schematic structural diagram of a first driving device portion provided in Example 2 of the present invention;

[0025] Figure 7 for Figure 6 A partial expanded view of

[0026] Figure 8 This is a schematic diagram of the internal structure of the traction device provided in Example 2 of the present invention.

[0027] Icons: 11-bottom plate, 12-first support frame, 13-support plate, 14-camera, 15-light source, 16-pressure roller, 17-storage rod, 20-film rolling device, 21-second support frame, 22-reel, 23-first driving device, 231-driving block, 232-first motor, 233-insertion rod, 234-spring, 235-friction block, 236-limiting rod, 237-limiting hole, 24-second driving device, 241-slide rail, 242-slider, 243-screw, 244-third motor, 245-connecting plate, 30-traction device, 31-traction roller, 32-gear, 33-driven sprocket, 34-second motor, 35-driving sprocket, 36-transmission chain, 37-bracket, 40-film. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example 1

[0034] The evaluation method for the application of titanium dioxide for plastics includes the following steps:

[0035] (1) Mix titanium dioxide and resin (LLDPE powder, Mobil 6101RQ, the same below) and form masterbatch particles through an extruder;

[0036] (2) After mixing the masterbatch particles in step (1) with the resin, the filter pressure value is tested using an extruder and a filter pressure value tester in sequence;

[0037] (3) After mixing the masterbatch particles in step (1) with the resin, a film is formed using an extruder and a blown film machine in sequence, and then a spot counter is used to detect the number of spots in the film.

[0038] In step (1), a twin-screw extruder is used to mix titanium dioxide and resin to form granules, wherein the mass ratio of titanium dioxide to resin is 7:3 (which can be adjusted according to the desired properties of the finished product), and a conventional extrusion process can be used.

[0039] In step (2), the masterbatch particles need to be mixed with the resin and then extruded using a single screw extruder, and then the filter pressure value of the extruded product can be tested using a filter pressure value tester. In the single screw extruder, the mass ratio of the resin to the masterbatch is 4:1, and other conditions can be used in a conventional single screw extrusion process. A conventional filter pressure value tester can be used.

[0040] In step (3), the mixing and extrusion conditions of the masterbatch and the resin are the same, except that the finished product after extrusion enters a film blowing machine to be blown into a film, and then a spot counter is used to calculate the density of the spots in the film.

[0041] Example 2

[0042] As attached Figure 1 -Attached Figure 8As shown, the present invention also provides a spot counter based on the above-mentioned titanium dioxide application evaluation method for plastics, comprising a base plate, a transparent support plate arranged on the base plate, a light source arranged below the support plate, a hollow reel, and a film feeding device and a film rolling device respectively arranged on opposite sides of the support plate; the film passes through the film feeding device, the support plate, and the film rolling device in sequence; the film feeding device comprises a V-shaped and horizontally arranged first support frame; the film rolling device comprises a V-shaped and horizontally arranged second support frame, a driving block arranged at one end of the second support frame, a first driving device for driving the driving block to rotate, a second driving device for driving the driving block to move along the second support frame, and a storage rod horizontally arranged at one end of the second support frame away from the driving block; the driving block abuts against the end of the reel; the first support frame and the second support frame are both used to support the reel. Specifically, a reel with a film is placed on the first support frame, an empty reel is placed on the second support frame, and then the film is passed through the support plate and rolled onto the reel of the second support frame. The film is projected by a light source, and the spots on the film can be clearly observed and counted. The first drive device drives the drive block and the reel to rotate, and the film can be rolled up so that the film is automatically rolled up. When the counting of a film is completed, the second drive device is used to push the reel and put the reel on the storage rod. Usually, a process parameter needs to produce multiple films to reduce errors, so multiple films with the same process can be collected on the same storage rod for data storage. This also facilitates the classification and storage of samples.

[0043] The first driving device in this embodiment includes a first motor arranged horizontally, a limit block arranged at the end of the driving block close to one end of the reel, and a limit hole opened at the end of the reel close to the driving block; the limit block cooperates with the limit hole; and the output shaft of the first motor is connected to the driving block. Specifically, after placing the empty reel on the second support frame, the second driving device drives the driving block close to the end of the reel so that the limit block is stuck in the limit hole, and then when the first driving device drives the driving block to rotate, the reel can be driven to rotate synchronously.

[0044] The drive block in this embodiment is provided with an insertion rod at one end close to the reel, and the insertion rod is inserted into the reel. The drive block and the insertion rod are an integrated structure and both are hollow structures; a through hole is provided at one end of the drive block close to the first motor, a friction block is provided inside the drive block, and a spring is provided inside the insertion rod; the output shaft of the first motor passes through the through hole and is connected to the friction block, one end of the spring is fixedly connected to the inner wall of the insertion rod, and the other end abuts against the friction block. It also includes a traction device arranged between the support plate and the film rolling device; the traction device includes a pair of traction rollers arranged parallel to each other, a gear arranged at the end of the traction roller, a driven sprocket arranged at the end of one of the traction rollers, a bracket for supporting the traction roller, a second motor arranged on the bracket, a driving sprocket arranged on the output shaft of the second motor, and a transmission chain for connecting the driving sprocket and the driven sprocket; the film passes through a pair of traction rollers; the gears on the pair of traction rollers are meshed with each other. Specifically, the movement of the film is mainly achieved by a pair of traction rollers which clamp the film and then drive it to move precisely. The first driving device is mainly used to drive the reel to rotate to tighten the film. During operation, the output shaft of the first motor is not rigidly connected to the reel. The output shaft of the first motor is connected to the friction block, and the friction block is attached to the inner wall of the driving block under the elastic force of the spring. The first motor drives the friction block to rotate, and the friction between the tube friction block and the driving block drives the driving block to rotate. The driving block drives the reel to rotate through the cooperation of the limit block and the limit hole. That is to say, when the speed at which the traction roller pulls the film is less than the rotation speed of the friction block (or the traction roller stops rotating), relative sliding (slipping) can occur between the friction block and the driving block, thereby preventing the reel from pulling the film rigidly.

[0045] The second driving device in this embodiment includes a slide rail arranged on the bottom plate, a slider slidably arranged on the slide rail, a screw threadedly connected to the slider, a third motor connected to the screw, and a connecting plate for connecting the first motor and the slider; the length direction of the slide rail is parallel to the length direction of the second support frame. Specifically, the third motor drives the slider to move along the slide rail by driving the screw to rotate, thereby driving the first motor to move through the connecting plate, so as to push the reel full of film to the storage rod, and allow the storage rod to penetrate into the reel.

[0046] In this embodiment, a pressure roller is provided on the upper side of the support plate close to the first support frame; the pressure roller contacts the upper surface of the film. Specifically, the film is pressed by the pressure roller, so that the film can be evenly attached to the support plate to avoid deformation.

[0047] In this embodiment, a support plate is provided above the support plate, and a camera is provided on the support plate. The camera is provided directly above the support plate and is arranged toward the support plate. Specifically, in addition to manually counting the spots on the film, automated equipment can also be used, such as taking a photo of the film with a camera and performing spot recognition on the photographed photo. For such methods, reference can be made to the technology in a polymer PE film surface crystal point detection system in CN117330582A. For related recognition equipment, existing equipment and technology can be used, such as "Thermo Fisher Professional PE Film Online Defect Detector". This can significantly improve the accuracy and efficiency of spot recognition and counting.

[0048] In summary, the titanium dioxide application evaluation method for plastics and the spot counter of this embodiment are achieved by mixing titanium dioxide with resin to form masterbatch particles, and then mixing the masterbatch particles with resin to form a finished product. The finished product can be subjected to a filter press value test to detect the processing fluidity of the finished product, and the film processed from the finished product can be subjected to spot detection to detect the number of spots in the finished product, thereby reflecting the number of coarse particles in the finished product. Through different ratios of titanium dioxide and resin, the actual situation of titanium dioxide in different fields can be detected in advance.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for evaluating the application of titanium dioxide for plastics, characterized in that: The steps are as follows: (1) Mixing titanium dioxide and resin into masterbatch particles through an extruder; (2) After mixing the masterbatch particles in step (1) with the resin, the filter pressure value is tested using an extruder and a filter pressure value tester in sequence; (3) After mixing the masterbatch particles in step (1) with the resin, a film is formed using an extruder and a blown film machine in sequence, and then a spot counter is used to detect the number of spots in the film.

2. A spot counter used in the titanium dioxide application evaluation method for plastics according to claim 1, characterized in that: It includes a bottom plate, a transparent support plate arranged on the bottom plate, a light source arranged below the support plate, a hollow reel, and a film feeding device and a film rolling device respectively arranged on opposite sides of the support plate; the film passes through the film feeding device, the support plate, and the film rolling device in sequence; The film feeding device comprises a V-shaped and horizontally arranged first support frame; The film rolling device comprises a V-shaped and horizontally arranged second support frame, a driving block arranged at one end of the second support frame, a first driving device for driving the driving block to rotate, a second driving device for driving the driving block to move along the second support frame, and a storage rod arranged horizontally at one end of the second support frame away from the driving block; The driving block is in contact with the end of the reel; the first support frame and the second support frame are both used to support the reel.

3. The spot counter according to claim 2, characterized in that: The first driving device comprises a first motor arranged horizontally, a limit block arranged on the driving block close to one end of the reel, and a limit hole opened on the end of the reel close to one end of the driving block; The limiting block matches the limiting hole; the first motor output shaft is connected to the driving block.

4. The spot counter according to claim 3, characterized in that: An insert rod is provided at one end of the driving block close to the reel, and the insert rod is inserted in the reel.

5. The spot counter according to claim 4, characterized in that: The driving block and the insertion rod are an integrated structure and both are hollow structures; a through hole is provided at one end of the driving block close to the first motor, a friction block is provided inside the driving block, and a spring is provided inside the insertion rod; The output shaft of the first motor is connected to the friction block after passing through the through hole. One end of the spring is fixedly connected to the inner wall of the insertion rod, and the other end abuts against the friction block.

6. The spot counter according to claim 2, characterized in that: It also includes a traction device disposed between the support plate and the film rolling device; The traction device comprises a pair of traction rollers arranged parallel to each other, gears arranged at the ends of the traction rollers, a driven sprocket arranged at the end of one of the traction rollers, a bracket for supporting the traction rollers, a second motor arranged on the bracket, a driving sprocket arranged on the output shaft of the second motor, and a transmission chain for connecting the driving sprocket and the driven sprocket; The film is arranged to pass through a pair of traction rollers; the gears on the pair of traction rollers are meshed with each other.

7. The spot counter according to claim 3, characterized in that: The second driving device includes a slide rail disposed on the bottom plate, a slider slidably disposed on the slide rail, a screw threadedly connected to the slider, a third motor connected to the screw, and a connecting plate for connecting the first motor and the slider; The length direction of the slide rail is parallel to the length direction of the second support frame.

8. The spot counter according to claim 2, characterized in that: A pressure roller is provided above one side of the support plate close to the first support frame; the pressure roller is in contact with the upper surface of the film.

9. The spot counter according to claim 2, characterized in that: A support plate is arranged above the support plate, and a camera is arranged on the support plate. The camera is arranged right above the support plate and toward the support plate.

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