Grinding pad for ITO glass polishing and preparation method thereof

Abstract

The invention discloses a grinding pad for ITO glass polishing and a preparation method thereof.The grinding pad comprises a cloth layer, damping cloth, a pressure-sensitive adhesive, a PET film, an adhesive layer and an abrasive layer, the preparation method comprises the following steps that stirring and mixing of an abrasive layer mixture are completed in proportion, and abrasive slurry is prepared; laying a cloth layer and damping cloth on a coating machine; coating a pressure-sensitive adhesive on the damping cloth and laying a PET (Polyethylene Terephthalate) film; s2, coating a PET film with an adhesive layer, and uniformly coating the adhesive layer with the mixed slurry in S1; heating and curing to obtain a semi-finished product; and cutting to obtain a finished product. The PET film layer is arranged between the base layer and the grinding material layer, tensile strength and impact strength are high, the service life is long, air tightness is good, small grinding material particles are prevented from leaking out, the surface of the grinding layer is arranged to be in a latticed shape, glass chippings and grinding pad particles can be conveniently discharged, and the glass grinding pad is high in cleaning capacity, free of scratches, long in service life and low in single piece cost.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printers, and in particular to a grinding pad for ITO glass polishing and a preparation method thereof. Background Art

[0002] Polishing pads, also known as polishing leather, polishing cloth, and polishing sheets, are important auxiliary materials that determine the surface quality in chemical mechanical polishing. They can be divided into abrasive polishing pads and non-abrasive polishing pads according to whether they contain abrasives; they can be divided into polyurethane polishing pads, non-woven polishing pads, and composite polishing pads according to different materials; they can be roughly divided into flat, grid, and spiral types according to different surface structures. When the polishing pad is in use, the polishing liquid needs to be evenly transported to different areas of the polishing pad, and then the polishing pad body contacts the workpiece for polishing and grinding operations.

[0003] When currently making polishing pads, the polishing surfaces of the polishing pads are usually made to the same height. When the workpiece is polished, the polishing pad applies the same force to the workpiece surface at all locations. When the raised areas on the workpiece surface are ground, the polishing effect of the polishing pad on the workpiece decreases, resulting in a poor polishing effect on the workpiece.

[0004] Therefore, how to provide a grinding pad for I TO glass polishing and a preparation method thereof to solve the problems existing in the prior art is of great significance for its application. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a grinding pad for I TO glass polishing and a preparation method thereof to solve the problem.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A grinding pad for ITO glass polishing, comprising a cloth layer, a damping cloth, a pressure-sensitive adhesive, a PET film, a glue layer and an abrasive layer;

[0008] The abrasive layer 100 is composed of the following components in percentage by mass: 45-65% adhesive, 10-20% cerium oxide powder, and 25-35% aluminum oxide powder;

[0009] The damping cloth is bonded to the top of the cloth layer, the PET film is bonded to the top of the damping cloth through a pressure-sensitive adhesive, an adhesive layer is coated on the top of the PET film, and an abrasive layer is coated on the adhesive layer.

[0010] Preferably, the method comprises the following steps:

[0011] S1: Stirring and mixing the abrasive layer mixture in proportion to obtain an abrasive slurry;

[0012] S2: Laying the cloth layer and the damping cloth on the coating machine;

[0013] S3: coating the damping cloth with a pressure-sensitive adhesive and laying a PET film;

[0014] S4: coating a glue layer on the PET film, and evenly coating the mixed slurry in S1 on the glue layer;

[0015] S5: heating and curing to obtain a semi-finished product;

[0016] S6: cutting to obtain finished products.

[0017] Preferably, the specific steps of S5 are as follows:

[0018] S5.1: The finished product obtained in step S4 is transported to a UV curing oven for preliminary curing:

[0019] S5.2: Use a screen to perform screen indentation on the surface of the finished product obtained in step S5.1;

[0020] S5.3: Continue to use the UV curing oven for secondary curing.

[0021] Preferably, the primary curing temperature in S5.1 is 80-160° C. and the fixation time is 5-8 min; the secondary curing temperature in S5.3 is 120-150° C. and the fixation time is 10-15 min.

[0022] Preferably, S1 is mixed by a mixer, and the mixer includes a mixing kettle, the top of the mixing kettle is rotatably connected to a first transmission pulley, the middle of the first transmission pulley is slidably connected to a stirring rod, the top of the mixing kettle is fixedly connected to a side plate, the side of the side plate is rotatably connected to a driving gear, the top of the first transmission pulley is fixedly connected to a ring gear, the ring gear is meshed with the driving gear, and the bottom end of the stirring rod is fixedly connected to a stirring frame.

[0023] Preferably, a motor is installed on one side of the mixing kettle, the output shaft of the motor is drivingly connected to a first driving pulley, the first driving pulley is connected to the first transmission pulley through a first transmission belt, and a resin inlet pipe is installed on the other side of the mixing kettle.

[0024] Preferably, a back plate is fixedly connected to the back of the top of the mixing kettle, two fixed blocks are fixedly connected to the front of the back plate, a sliding rod is fixedly connected between the two fixed blocks, a sliding block is slidably connected to the sliding rod, springs are provided at the top and bottom of the sliding block, the sliding block is fixedly connected to a bearing sleeve, a bearing is provided inside the bearing sleeve, and the bearing is rotatably connected to the stirring rod.

[0025] Preferably, one side of the bearing sleeve is fixedly connected to a sliding gear ring, one side of the driving gear is fixedly connected to a transmission rod, the end of the transmission rod is fixedly connected to a transmission gear, and the transmission gear is meshingly connected to the sliding gear ring.

[0026] Preferably, the top of the back plate is fixedly connected to a dosing cylinder, a particle hopper is installed on the top of the dosing cylinder, an inner tube is fixedly connected to the bottom of the dosing cylinder, the interior of the stirring rod is hollow, the inner tube is slidably connected to the stirring rod, and an oblique hole is provided on the side of the bottom of the inner tube. Preferably, a dosing wheel is rotatably connected to the inside of the dosing cylinder, a dosing groove is provided on the surface of the dosing wheel, a second transmission pulley is fixedly connected to one side of the dosing wheel, a second drive pulley is fixedly connected to the middle of the transmission rod, and the second drive pulley and the second transmission pulley are connected by a second transmission belt.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention provides a PET film layer between the base layer and the abrasive layer, which has tensile strength and impact strength, long service life, good air tightness, and prevents leakage of fine abrasive particles.

[0029] 2. The surface of the grinding layer of the present invention is arranged in a grid shape, so as to facilitate the removal of glass debris and grinding pad particles.

[0030] 3. The present invention has strong cleaning ability, zero scratching, long service life and low single chip cost.

[0031] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0032] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 is a flow chart of the preparation method of the present invention;

[0036] Figure 3 It is a structural schematic diagram of the mixer in the present invention;

[0037] Figure 4 for Figure 3 A magnified image of point A;

[0038] Figure 5 A schematic diagram of the structure of the transmission gear and the sliding gear ring in the present invention;

[0039] Figure 6 It is a structural schematic diagram of the quantitative rotating wheel in the present invention;

[0040] Figure 7 It is a schematic diagram of the structure when the inclined hole is closed in the present invention;

[0041] Figure 8 It is a schematic diagram of the structure when the oblique hole in the present invention is opened;

[0042] Fig. 9 It is a structural schematic diagram of the gas filling device in the present invention;

[0043] Fig.10 This is an electron micrograph of the polishing layer in the present invention.

[0044] In the figure: 1, mixing kettle; 2, stirring rod; 3, stirring frame; 4, motor; 5, first driving pulley; 6, first transmission belt; 7, first transmission pulley; 8, back plate; 9, dosing cylinder; 10, particle hopper; 11, second transmission pulley; 12, second transmission belt; 13, driving gear; 14, side plate; 15, resin inlet pipe; 16, second transmission pulley; 17, gear ring; 18, bearing sleeve; 19, inner tube; 20, sliding rod; 21, sliding block; 22, spring; 23, fixing block; 24, differential transmission rod; 25, dosing wheel; 26, dosing groove; 27, transmission gear; 28, inclined hole. DETAILED DESCRIPTION

[0045] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0046] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0047] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0048] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0049] See also Figure 1-10 The present invention provides a technical solution of a grinding pad for I TO glass polishing and a preparation method thereof: comprising a cloth layer 600, a damping cloth 500, a pressure-sensitive adhesive 400, a PET film 300, a glue layer 200 and an abrasive layer 100;

[0050] The abrasive layer 100 is composed of the following components in percentage by mass: 45-65% adhesive, 10-20% cerium oxide powder, and 25-35% aluminum oxide powder;

[0051] The damping cloth 500 is bonded to the top of the cloth layer 600 , the PET film 300 is bonded to the top of the damping cloth 500 via the pressure-sensitive adhesive 400 , the top of the PET film 300 is coated with a glue layer 200 , and the top of the glue layer 200 is coated with an abrasive layer 100 .

[0052] A method for preparing a grinding pad for ITO glass polishing comprises the following steps:

[0053] S1: Stirring and mixing the abrasive layer mixture in proportion to obtain an abrasive slurry;

[0054] S2: Laying the cloth layer and the damping cloth on the coating machine;

[0055] S3: coating the damping cloth with a pressure-sensitive adhesive and laying a PET film;

[0056] S4: coating a glue layer on the PET film, and evenly coating the mixed slurry in S1 on the glue layer;

[0057] S5: heating and curing to obtain a semi-finished product;

[0058] S6: cutting to obtain finished products.

[0059] The specific steps of S5 are as follows:

[0060] S5.1: The finished product obtained in step S4 is transported to a UV curing oven for preliminary curing:

[0061] S5.2: Use a screen to perform screen indentation on the surface of the finished product obtained in step S5.1;

[0062] S5.3: Continue to use the UV curing oven for secondary curing.

[0063] In S5.1, the initial curing temperature is 80-160°C and the fixing time is 5-8 minutes. In S5.3, the secondary curing temperature is 120-150°C and the fixing time is 10-15 minutes.

[0064] S1 adopts a mixer for mixing, and the mixer includes a mixing kettle 1, the top of the mixing kettle 1 is rotatably connected to a first transmission pulley 7, the middle of the first transmission pulley 7 is slidably connected to a stirring rod 2, the top of the mixing kettle 1 is fixedly connected to a side plate 14, the side of the side plate 14 is rotatably connected to a driving gear 13, the top of the first transmission pulley 7 is fixedly connected to a gear ring, the gear ring is meshed with the driving gear 13, and the bottom end of the stirring rod 2 is fixedly connected to a stirring frame 3.

[0065] A motor 4 is installed on one side of the mixing kettle 1, and the output shaft of the motor 4 is connected to the first driving pulley 5. The first driving pulley 5 is connected to the first transmission pulley 7 through the first transmission belt 6. A resin inlet pipe 15 is installed on the other side of the mixing kettle 1.

[0066] A back plate 8 is fixedly connected to the back of the top of the mixing kettle 1, two fixed blocks 23 are fixedly connected to the front of the back plate 8, a slide rod 20 is fixedly connected between the two fixed blocks 23, a slide rod 20 is slidably connected to a slider 21, springs 22 are provided at the top and bottom of the slider 21, the slider 21 is fixedly connected to a bearing sleeve 18, a bearing is provided inside the bearing sleeve 18, and the bearing is rotatably connected to the stirring rod 2.

[0067] A sliding gear ring 17 is fixedly connected to one side of the bearing sleeve 18, a transmission rod 24 is fixedly connected to one side of the driving gear 13, a transmission gear 27 is fixedly connected to the end of the transmission rod 24, and the transmission gear 27 is meshed with the sliding gear ring 17. The sliding gear ring 17 is elliptical in shape, and meshing teeth 1 and meshing teeth 2 are arranged on the inner sides of its two long sides, and the transmission gear 27 is only provided with meshing teeth 1 on one side. When the meshing teeth 1 and the meshing teeth 2 are meshed for transmission, the sliding gear ring 17 is driven to move downward, and when the meshing teeth 1 and the meshing teeth 2 are meshed for transmission, the sliding gear ring 17 is driven to move upward, thereby realizing the up and down reciprocating motion of the bearing sleeve 18.

[0068] The top of the back plate 8 is fixedly connected to a metering cylinder 9, the top of which is provided with a particle hopper 10, the bottom of which is fixedly connected to an inner tube 19, the interior of the stirring rod 2 is hollow, the inner tube 19 is slidably connected to the stirring rod 2, and an inclined hole 28 is provided on the bottom side of the inner tube 19.

[0069] The inside of the metering cylinder 9 is rotatably connected to a metering wheel 25, a metering groove 26 is provided on the surface of the metering wheel 25, a second transmission pulley 11 is fixedly connected to one side of the metering wheel 25, a second drive pulley 16 is fixedly connected to the middle of the transmission rod 24, and the second drive pulley 16 and the second drive pulley 11 are connected through a second transmission belt 12.

[0070] An air pipe 31 is fixedly connected below the metering cylinder 9, and a piston 30 is slidably connected inside the air pipe 31. A sliding rod 29 is fixedly connected to the bottom end of the piston 30, and the bottom end of the sliding rod 29 is fixedly connected to the stirring rod 2. The air outlet end of the air pipe 31 is connected to the inner tube 19 via a one-way air outlet valve 33, and the air inlet end of the air pipe 31 is connected to a one-way air inlet valve 32.

[0071] Specifically, when the abrasive layer mixture is stirred, first, 55% of the adhesive component is injected into the stirring kettle 1 through the resin inlet pipe 15, and then the motor 4 is turned on. During stirring, the motor 4 drives the first driving pulley 5 to rotate, and the first driving pulley 5 drives the first driving pulley 7 to rotate through the first transmission belt 6, and the first transmission pulley 7 drives the stirring frame 3 to rotate through the stirring rod 2, so as to stir and mix. At the same time, when the first transmission pulley 7 rotates, it drives the driving gear 13 to rotate through the gear ring above it, and the driving gear 13 drives the transmission gear 27 to rotate through the transmission rod 24, and the transmission gear 27 drives the sliding gear ring 17 to move up and down, thereby realizing the up and down reciprocating motion of the bearing sleeve 18, and the bearing sleeve 18 drives the stirring rod 2 to move up and down, so that the stirring frame 3 moves up and down while rotating, and the adhesive is pre-stirred, and then the 35% component aluminum oxide powder and the 10% component cerium oxide powder are poured into the particle hopper 10. At this time, under the action of gravity, the powder in the particle hopper 10 falls into the quantitative groove 26. 26 keeps catching you. When the opening of the quantitative groove 26 faces downward, a certain amount of aluminum oxide powder in the quantitative groove 26 is transported downward through the inner tube 19 to the location of the inclined hole 28, and then transported to the adhesive, and stirred at the same time, so that the adhesive and the aluminum oxide powder are mixed. When the transmission rod 24 rotates, it drives the second driving pulley 16 to rotate. The second driving pulley 16 drives the second driving pulley 11 to rotate through the second driving belt 12, thereby driving the quantitative rotating wheel 25 to rotate, and the quantitative amount of the aluminum oxide powder is realized. When the stirring rod 2 rises to a certain height, the inclined hole 28 is exposed, and the sliding rod 29 moves upward, so that the gas in the air pipe 31 is pressed into the interior of the inner tube 19 through the piston 30, and the powder gathered at the inclined 28 is blown outward, and a small amount of bubbles are generated at the same time. The powder adheres to the inner wall of the bubble, and then the stirring frame 3 descends and rotates to break the bubble to complete the stirring. Compared with the existing mixing and stirring equipment, the present invention can realize the addition of powder in quantity, avoid powder stirring and agglomeration, make the mixture more uniform, thereby improving the wear resistance of the abrasive layer.

[0072] Preparation method: 55% of the adhesive component is added to the mixer, and then 35% of the aluminum oxide powder and 10% of the cerium oxide powder are poured into the particle hopper 10, the motor 4 is started for mixing, and then the cloth layer and the damping cloth are laid on the coating machine; the pressure-sensitive adhesive is coated on the damping cloth and a PET film is laid; a glue layer is coated on the PET film, and the mixed slurry in S1 is evenly coated on the glue layer; heating and curing are performed to obtain a semi-finished product; and cutting is performed to obtain a finished product.

[0073] The above description is only the preferred embodiment of the present invention, which does not limit the protection scope of the present invention. For those skilled in the art, the present invention may have various modifications and changes. Within the spirit and principle of the present invention, the changes, modifications, replacements, integrations and parameter changes of these embodiments by conventional substitutions or capable of achieving the same functions without departing from the principles and spirit of the present invention all fall within the protection scope of the present invention.

Claims

1. A grinding pad for ITO glass polishing, characterized in that: It includes a cloth layer, a damping cloth, a pressure-sensitive adhesive, a PET film, a glue layer and an abrasive layer; The abrasive layer is composed of the following components in percentage by mass: 45-65% adhesive, 10-20% cerium oxide powder, and 25-35% aluminum oxide powder; The damping cloth is bonded to the top of the cloth layer, the PET film is bonded to the top of the damping cloth through a pressure-sensitive adhesive, an adhesive layer is coated on the top of the PET film, and an abrasive layer is coated on the adhesive layer.

2. A method for preparing a grinding pad for ITO glass polishing, characterized in that: The preparation method of the grinding pad comprises the following steps: S1: Stirring and mixing the abrasive layer mixture in proportion to obtain an abrasive slurry; S2: Laying the cloth layer and the damping cloth on the coating machine; S3: coating the damping cloth with a pressure-sensitive adhesive and laying a PET film; S4: coating a glue layer on the PET film, and evenly coating the mixed slurry in S1 on the glue layer; S5: heating and curing to obtain a semi-finished product; S6: cutting to obtain finished products.

3. A grinding pad for ITO glass polishing and a preparation method thereof as claimed in claim 2, characterized in that: The specific steps of S5 are as follows: S5.1: The finished product obtained in step S4 is transported to a UV curing oven for preliminary curing: S5.2: Using a screen to perform screen indentation on the surface of the finished product obtained in step S5.1; S5.3: Continue to use the UV curing oven for secondary curing.

4. A method for preparing a grinding pad for ITO glass polishing as claimed in claim 3, characterized in that: In the S5.1, the primary curing temperature is 80-160° C. and the fixing time is 5-8 min. In the S5.3, the secondary curing temperature is 120-150° C. and the fixing time is 10-15 min.

5. A method for preparing a grinding pad for ITO glass polishing as claimed in claim 4, characterized in that: The S1 is mixed by a mixer, the mixer comprising a mixing kettle (1), the top end of the mixing kettle (1) is rotatably connected to a first transmission pulley (7), the middle of the first transmission pulley (7) is slidably connected to a stirring rod (2), the top of the mixing kettle (1) is fixedly connected to a side plate (14), the side of the side plate (14) is rotatably connected to a driving gear (13), the top end of the first transmission pulley (7) is fixedly connected to a gear ring, the gear ring is meshed with the driving gear (13), and the bottom end of the stirring rod (2) is fixedly connected to a stirring frame (3).

6. A method for preparing a grinding pad for ITO glass polishing as claimed in claim 5, characterized in that: A motor (4) is installed on one side of the mixing kettle (1); the output shaft of the motor (4) is connected to a first driving pulley (5); the first driving pulley (5) is connected to a first transmission pulley (7) via a first transmission belt (6); and a resin inlet pipe (15) is installed on the other side of the mixing kettle (1).

7. A method for preparing a grinding pad for ITO glass polishing as claimed in claim 6, characterized in that: The back side of the top of the mixing kettle (1) is fixedly connected to a back plate (8), the front side of the back plate (8) is fixedly connected to two fixed blocks (23), a sliding rod (20) is fixedly connected between the two fixed blocks (23), the sliding rod (20) is slidably connected to a slider (21), the top and bottom ends of the slider (21) are both provided with springs (22), the slider (21) is fixedly connected to a bearing sleeve (18), a bearing is provided inside the bearing sleeve (18), and the bearing is rotatably connected to the stirring rod (2).

8. A grinding pad for ITO glass polishing and a preparation method thereof as claimed in claim 7, characterized in that: One side of the bearing sleeve (18) is fixedly connected to a sliding gear ring (17), one side of the driving gear (13) is fixedly connected to a transmission rod (24), the end of the transmission rod (24) is fixedly connected to a transmission gear (27), and the transmission gear (27) is meshingly connected to the sliding gear ring (17).

9. A method for preparing a grinding pad for ITO glass polishing as claimed in claim 8, characterized in that: The top end of the back plate (8) is fixedly connected to a metering cylinder (9), the top end of the metering cylinder (9) is equipped with a particle hopper (10), the bottom end of the metering cylinder (9) is fixedly connected to an inner tube (19), the interior of the stirring rod (2) is hollow, the inner tube (19) is slidably connected to the stirring rod (2), and an inclined hole (28) is provided on the side of the bottom end of the inner tube (19).

10. A method for preparing a grinding pad for ITO glass polishing as claimed in claim 9, characterized in that: A quantitative rotating wheel (25) is rotatably connected inside the quantitative cylinder (9), a quantitative groove (26) is provided on the surface of the quantitative rotating wheel (25), a second transmission pulley (11) is fixedly connected to one side of the quantitative rotating wheel (25), a second driving pulley (16) is fixedly connected to the middle of the transmission rod (24), and the second driving pulley (16) and the second transmission pulley (11) are connected in transmission via a second transmission belt (12).

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