CN114773792A - Voice coil motor inner wall track material and preparation method and application thereof - Google Patents
Voice coil motor inner wall track material and preparation method and application thereof Download PDFInfo
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- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
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Abstract
The application relates to the technical field of voice coil motor parts and part materials, and provides a voice coil motor inner wall track material and a preparation method thereof, wherein the preparation raw materials of the voice coil motor inner wall track material comprise the following components in parts by weight: 50-80 parts of liquid crystal polyester; 1-15 parts of polytetrafluoroethylene; 8-50 parts of a filler; wherein the filler does not comprise glass fibers. The raw materials are combined to form the wear-resistant and scratch-resistant liquid crystal polyester composite material, so that the inner wall track material of the voice coil motor can obviously improve the wear resistance of the track, and the service life of the voice coil motor can be prolonged.
Description
Technical Field
The application belongs to the technical field of voice coil motor parts and part materials, and particularly relates to a voice coil motor inner wall track material and a preparation method and application thereof.
Background
A Voice Coil Motor (VCM) is a kind of Motor, and is a special type of direct drive Motor, which has the characteristics of simple structure, small volume, high speed, fast response, etc. The working principle is that the force is generated when an electrified coil (conductor) is placed in a magnetic field, and the force is proportional to the current applied to the coil, so that people can provide a permanent magnetic field, and the stretching position of the elastic sheet or the rotor is controlled by changing the current of the coil in the motor so as to drive the elastic sheet or the rotor to move up and down.
At present, basically, a voice coil motor is used in a camera of a smart phone, and the camera can be in the clearest state by adjusting the position of a lens of the smart phone to change the focal length. However, with the recent ultrahigh pixel becoming the standard of high-end flagship type, the lens of the mobile phone is heavier, so the requirement for the voice coil motor therein is higher, and therefore, the selection of the voice coil motor material needs to consider the system performance, working environment, cost and other factors of the voice coil motor in many aspects. Conventional voice coil motors are typically suspension voice coil motors, however, the thrust of such suspension voice coil motors is not sufficient to push such heavy lenses in the face of the heavier and heavier lenses in the cell phone. Thus, memory metal (SMA) voice coil motors and ball type voice coil motors are emerging from the industry chain. The memory metal voice coil motor is too high in manufacturing cost and difficult to widely apply, and the ball type voice coil motor is larger in moving range than a suspension type voice coil motor, stable in structure, easy to control and higher in reliability.
Ball formula voice coil motor utilizes the ball slide rail to replace the suspension wire, use the X axle, the epaxial two-layer ball slide rail structure of Y carries out the translation to motor active cell (through the drive of voice coil system), based on the structural reason of ball, ball and the orbital frequent frictional process of inner wall can appear in ball formula voice coil motor during operation, such working process leads to inner wall track wearing and tearing easily, the condition that the ball is blocked even takes place, therefore, the track material wearability among the ball formula voice coil motor is very important, however the orbital requirement of ball formula voice coil motor is difficult to satisfy to conventional polyester material wearability.
Disclosure of Invention
The application aims to provide a voice coil motor inner wall track material and a preparation method and application thereof, and aims to solve the technical problem of how to improve the friction resistance of the voice coil motor inner wall track.
In order to achieve the purpose of the application, the technical scheme adopted by the application is as follows:
in a first aspect, the application provides a voice coil motor inner wall track material, the preparation raw materials of the voice coil motor inner wall track material comprise the following components in parts by weight:
50-80 parts of liquid crystal polyester;
1-15 parts of polytetrafluoroethylene;
8-50 parts of a filler;
wherein the filler does not include glass fibers.
In a second aspect, the present application provides a method for preparing a track material for an inner wall of a voice coil motor, comprising the following steps:
providing a preparation raw material in the voice coil motor inner wall track material;
mixing the liquid crystal polyester resin, the polytetrafluoroethylene and the filler to obtain a mixed material;
and melting and granulating the mixed material.
In a third aspect, the present application provides an application of a liquid crystal polyester composite material in an inner wall track of a voice coil motor, where the liquid crystal polyester composite material includes the following components in parts by weight:
50-80 parts of liquid crystal polyester;
1-15 parts of polytetrafluoroethylene;
8-50 parts of a filler;
wherein the filler does not include glass fibers.
The utility model provides a voice coil motor inner wall track material, its preparation material include certain weight portion's liquid crystal polyester, polytetrafluoroethylene and do not contain glass fiber's filler, and the combination of above-mentioned preparation raw materials forms a wear-resisting resistant liquid crystal polyester combined material, based on the stand wear and tear characteristics of this liquid crystal polyester combined material for the voice coil motor inner wall track material of this application can show the orbital degree of wear that improves, thereby can promote voice coil motor's life.
According to the preparation method of the voice coil motor inner wall track material provided by the second aspect of the application, the liquid crystal polyester resin, the polytetrafluoroethylene and the filler in certain parts by weight are used as preparation raw materials to be mixed, melted and granulated, so that the wear-resistant voice coil motor inner wall track material is obtained.
The application that this application third aspect provided has excellent wear-resisting resistant scraping performance based on this application liquid crystal polyester combined material, consequently can be used as voice coil motor inner wall track material, can show the wearing degree that improves the track like this to promote voice coil motor's life.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for preparing a voice coil motor inner wall track material according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
In the present application, "at least one" means one or more, "plural" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items.
It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, some or all of the steps may be executed in parallel or executed sequentially, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The weight of the related components mentioned in the description of the embodiments of the present application may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, the content of the related components is scaled up or down within the scope disclosed in the description of the embodiments of the present application as long as it is scaled up or down according to the description of the embodiments of the present application. Specifically, the mass described in the specification of the examples of the present application may be a mass unit known in the chemical field such as μ g, mg, g, kg, etc.
The terms "first" and "second" are used for descriptive purposes only and are used for distinguishing purposes such as substances from one another, and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. For example, a first XX may also be referred to as a second XX, and similarly, a second XX may also be referred to as a first XX, without departing from the scope of embodiments of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The embodiment of the application provides a voice coil motor inner wall track material in a first aspect, and the preparation raw materials of the voice coil motor inner wall track material comprise the following components in parts by weight:
50-80 parts of liquid crystal polyester;
1-15 parts of polytetrafluoroethylene;
8-50 parts of a filler;
wherein the filler does not comprise glass fibers.
The utility model provides a voice coil motor inner wall track material, its preparation material include certain weight portions's liquid crystal polyester, polytetrafluoroethylene and do not contain glass fiber's filler, and the combination of above-mentioned preparation raw materials forms a wear-resisting resistant liquid crystal polyester combined material that scrapes, based on the stand wear and tear characteristics of this liquid crystal polyester combined material for the voice coil motor inner wall track material of this application embodiment can show the orbital degree of wear that improves, thereby can promote voice coil motor's life.
Furthermore, the track material of the inner wall of the voice coil motor is a track material of the inner wall of the ball type voice coil motor, so that the defect that the track of the inner wall of the ball type VCM is easy to wear can be effectively overcome; the liquid crystal polyester, the polytetrafluoroethylene and the filler which does not contain glass fiber in parts by weight form the wear-resistant and scratch-resistant liquid crystal polyester composite material, so that the composite material can be used for preparing a high-performance ball-type VCM inner wall track material, and when the ball-type VCM is processed, the wear-resistant degree of the track can be obviously improved, and the service life of the ball-type VCM is prolonged.
In one embodiment, the liquid crystal polyester is selected from wholly aromatic liquid crystal polyester resins. The liquid crystal polyester is used as a matrix material, and the wholly aromatic liquid crystal polyester resin has excellent heat resistance, dimensional stability and high mechanical property, so that a good material for the inner wall track of the voice coil motor can be formed. Further, the number average molecular weight of the liquid crystal polyester resin is 25000-50000, such as 25000, 30000, 35000, 40000, 50000 and the like; the wholly aromatic liquid crystal polyester resin under high polymerization has better mechanical property.
The liquid crystal polyester is 50-80 parts by weight, such as 50 parts, 55 parts, 60 parts, 65 parts, 70 parts, 75 parts, 80 parts and the like. If the addition amount is too much, the addition of polytetrafluoroethylene and filler can be influenced, so that the friction resistance increasing effect on the track material on the inner wall of the voice coil motor is not ideal; if the addition amount is too small, the matrix material of the VCM inner wall track material compound is too small, and the mechanical property of the VCM inner wall track material is influenced.
In one embodiment, the amount of Polytetrafluoroethylene (PTFE) is 1 to 15 parts, such as 1 part, 2 parts, 4 parts, 5 parts, 8 parts, 10 parts, 15 parts, and the like. The polytetrafluoroethylene added as an additive can modify the liquid crystal polyester resin, for example, the polytetrafluoroethylene can be fused with the wholly aromatic liquid crystal polyester resin, and the friction resistance of the wholly aromatic liquid crystal polyester resin compound can be improved. In a specific application, for example, when a VCM rail is manufactured by injection molding of a liquid crystal polyester, a friction-resistant liquid crystal polymer obtained by modifying a wholly aromatic liquid crystal polyester resin with PTFE is injection molded, and the friction coefficient of the resulting VCM rail is reduced, so that the abrasion of the ball to the rail can be reduced.
In one embodiment, the filler is selected from at least one or two of mica, wollastonite, talc, barium sulfate, whiskers, and carbon black, and the filler does not include glass fibers. Because the glass fiber is easy to be brittle and has poor wear resistance, the glass fiber is difficult to be compounded with liquid crystal polyester and polytetrafluoroethylene to form the liquid crystal polyester composite material with high wear resistance and scraping resistance. Therefore, the embodiment of the application uses at least one or two of mica, wollastonite, talc, barium sulfate, whisker and carbon black as a filler to be compounded with the liquid crystal polyester and the polytetrafluoroethylene, so that the track material on the inner wall of the voice coil motor has good mechanical properties and friction resistance. Further, the filler is 8 to 50 parts by weight, such as 8 parts, 10 parts, 14 parts, 20 parts, 24 parts, 25 parts, 30 parts, 34 parts, 40 parts, 45 parts, 50 parts and the like.
In one embodiment, the filler is comprised of a first filler and a second filler, the first filler is carbon black and the second filler is selected from at least one of mica and wollastonite. The combination not only facilitates the sufficient dispersion of the filler, but also reduces the anisotropy of the VCM inner wall track material, thereby increasing the dimensional stability of the product. Further, the mass ratio of the first filler to the second filler is 1: (7-10), for example, 1: 7. 1: 8. 1: 10, etc.
In a preferred embodiment, the raw material for preparing the material of the inner wall track of the voice coil motor comprises:
68-78 parts of liquid crystal polyester;
2-9 parts of polytetrafluoroethylene;
15-22 parts of a filler;
wherein, the filler is composed of a first filler and a second filler, the first filler is carbon black, and the second filler is at least one selected from mica and wollastonite. Specifically, the mass ratio of the first filler to the second filler is 1: (7-10). The track material for the inner wall of the voice coil motor, which is prepared from the liquid crystal polyester, the polytetrafluoroethylene and the filler, has the best comprehensive effect of mechanical property and friction resistance.
The second aspect of the embodiments of the present application further provides a method for preparing a material for an inner wall track of a voice coil motor, as shown in fig. 1, the method includes the following steps:
s01: providing a preparation raw material in the material of the inner wall track of the voice coil motor in the embodiment of the application;
s02: mixing liquid crystal polyester resin, polytetrafluoroethylene and a filler to obtain a mixed material;
s03: and melting and granulating the mixed material.
The preparation method of voice coil motor inner wall track material provided by the embodiment of the application mixes the melting granulation through taking liquid crystal polyester resin, polytetrafluoroethylene and filler of certain weight part as the preparation raw materials to obtain the voice coil motor inner wall track material with wear resistance, the preparation method is simple in process and easy to obtain raw materials, the finally obtained voice coil motor inner wall track material can effectively prolong the service life of the voice coil motor, and therefore the preparation method has a good application prospect for the production of the voice coil motor.
According to the embodiment of the application, the liquid crystal polyester is used as the matrix, the polytetrafluoroethylene and the filler are added, and the voice coil motor inner wall track material is prepared through a melt blending technology. Meanwhile, the preparation method has the advantages of simple process, less used equipment and stable performance of the prepared material, effectively reduces the production cost and is suitable for large-scale use. The liquid crystal polyester resin composite material is used as the voice coil motor inner wall track material, has the characteristic of wear resistance, can obviously improve the wear resistance of a track, particularly a ball type VCM track, so that the service life of the ball type VCM is prolonged, and can be widely applied to the field of friction-resistant electrical plastic parts.
In the above step S01: the liquid crystal polyester, the PTFE and the filler can be weighed according to the preparation raw materials of the track material on the inner wall of the voice coil motor, so that corresponding raw materials are provided, the types and the addition amount of the preparation raw materials are explained in detail above, and the details are not repeated here for saving space.
In the above step S02: the preparation raw materials can be uniformly mixed by an automatic mixer to obtain a mixed material.
In one embodiment, the mixing process further comprises drying the liquid crystal polyester resin, the polytetrafluoroethylene and the filler, so that the dried preparation raw materials can be better mixed. Furthermore, the temperature of the drying treatment is 120 to 150 ℃, for example, 120 ℃, 135 ℃, 150 ℃ and the like, and the time of the drying treatment is 4 to 7 hours, for example, 4 hours, 5 hours, 7 hours and the like. The respective preparation raw materials can be dried more preferably under the above conditions.
In the above step S03: the inner wall track material of the voice coil motor can be prepared by melting and granulating.
In one embodiment, melt granulation comprises: and melting and mixing the mixture, and then sequentially extruding, drawing strips, cooling and granulating. Further, the above melt granulation process may be performed in a twin screw extruder.
In an embodiment, the preparation method is a preparation method of the ball type voice coil motor inner wall track material, and specifically, the ball type voice coil motor inner wall track material can be obtained by drying, uniformly mixing and melting the mixture after drying the wholly aromatic liquid crystal polyester resin, the polytetrafluoroethylene and the filler according to the weight components, extruding, drawing, cooling and granulating the mixture. The preparation method can fully disperse all components, so that the prepared high-performance ball type voice coil motor inner wall track material has a low friction coefficient, and the preparation method is simple in process, less in used equipment, stable in performance of the prepared material, capable of effectively reducing the production cost and suitable for large-scale use.
The embodiment of the application also provides an application of the liquid crystal polyester composite material in the track of the inner wall of the voice coil motor, wherein the liquid crystal polyester composite material comprises the following components in parts by weight: 50-80 parts of liquid crystal polyester; 1-15 parts of polytetrafluoroethylene; 8-50 parts of a filler; wherein the filler does not comprise glass fibers. Because the liquid crystal polyester composite material has excellent wear-resisting and scratch-resisting properties, the liquid crystal polyester composite material can be used as a track material of the inner wall of the voice coil motor, so that the wear-resisting degree of the track can be obviously improved, and the service life of the voice coil motor is prolonged.
Further, the liquid crystal polyester is selected from wholly aromatic liquid crystal polyester resins. The filler may be selected from at least one or two of mica, wollastonite, talc, barium sulfate, whiskers, and carbon black, the filler excluding glass fibers. Further, the liquid crystal polyester composite material can be used in the inner wall track of a ball type voice coil motor.
Further, the liquid crystal polyester composite material comprises: 68-78 parts of liquid crystal polyester; 2-9 parts of polytetrafluoroethylene; 15-22 parts of a filler; wherein, the filler is composed of a first filler and a second filler, the first filler is carbon black, and the second filler is at least one selected from mica and wollastonite. Specifically, the mass ratio of the first filler to the second filler is 1: (7-10). The liquid crystal polyester composite material formed by the liquid crystal polyester, the polytetrafluoroethylene and the filler has the best comprehensive effect of mechanical property and friction resistance.
The components of the liquid crystal polyester composite material are described in detail above, and are not repeated herein.
The following description will be given with reference to specific examples.
Example 1
A track material for the inner wall of a ball type voice coil motor comprises 76 parts of wholly aromatic Liquid Crystal Polyester (LCP), 2 parts of PTFE, 20 parts of mica and 2 parts of carbon black; the preparation method comprises the following steps:
weighing each raw material component according to the material of the inner wall track of the ball type voice coil motor; drying the wholly aromatic liquid crystalline polyester resin, PTFE and fillers (mica and carbon black) at 140 ℃ for 6 hours; putting the dried wholly aromatic liquid crystal polyester resin, PTFE and filler into an automatic mixer, and uniformly mixing to obtain a mixed material; and (3) putting the mixed material into a double-screw extruder for melting and mixing, and then extruding, drawing strips, cooling and granulating to prepare the ball type voice coil motor inner wall track material.
Example 2
A track material for the inner wall of a ball type voice coil motor comprises 73 parts of wholly aromatic liquid crystal polyester resin, 5 parts of PTFE (polytetrafluoroethylene), 20 parts of mica and 2 parts of carbon black. The preparation method is identical to that of example 1.
Example 3
A track material for an inner wall of a ball type voice coil motor comprises 69 parts of wholly aromatic liquid crystal polyester resin, 9 parts of PTFE (polytetrafluoroethylene), 20 parts of mica and 2 parts of carbon black. The preparation method is identical to that of example 1.
Example 4
A track material for the inner wall of a ball type voice coil motor comprises 77 parts of wholly aromatic liquid crystal polyester resin, 6 parts of PTFE (polytetrafluoroethylene), 15 parts of mica and 2 parts of carbon black. The preparation method is identical to that of example 1.
Example 5
The track material for the inner wall of the ball type voice coil motor comprises 73 parts of wholly aromatic liquid crystal polyester resin, 5 parts of PTFE (polytetrafluoroethylene), 20 parts of wollastonite and 2 parts of carbon black. The preparation method is identical to that of example 1.
Comparative example 1
A track material for the inner wall of a ball type voice coil motor comprises 78 parts of wholly aromatic liquid crystal polyester resin, 20 parts of mica and 2 parts of carbon black. The preparation process was identical to that of example 1, except that no PTFE was added.
Comparative example 2
The ball type voice coil motor inner wall track material comprises 73 parts of wholly aromatic liquid crystal polyester resin, 5 parts of elastomer, 20 parts of mica and 2 parts of carbon black. The preparation method was identical to that of example 1, except that PTFE was replaced with an elastomer.
Comparative example 3
The track material for the inner wall of the ball type voice coil motor comprises 73 parts of wholly aromatic liquid crystal polyester resin, 5 parts of PTFE (polytetrafluoroethylene), 20 parts of glass fiber and 2 parts of carbon black. The preparation method was identical to that of example 1, except that the filler was replaced with glass fiber.
Performance testing
In order to verify the performance of the ball type voice coil motor inner wall track material prepared in the examples and comparative examples of the present application, the ball type voice coil motor inner wall track material obtained in the examples and comparative examples was used as an injection molding raw material, injection molding was performed using an injection molding machine, and the performance of the ball type voice coil motor inner wall track material in the examples and comparative examples was tested and evaluated by the following methods:
(1) scratch resistance test
The scratch-resistant penetration depth referred to in the examples of the present application was determined according to the ISO 19252:2008 standard.
(2) Flexural strength
The flexural strength measurements referred to in the examples of this application follow ASTM D-790.
(3) Coefficient of friction
The heat distortion temperature measurement according to the examples of the present application was performed in accordance with ASTM D1894.
The test results are shown in table 1 below.
TABLE 1
As can be seen from table 1, the friction coefficient of the inner wall track material of the ball type voice coil motor prepared in example 1 was 0.25, and the scratch resistance depth was 67 μm; the friction coefficient of the track material on the inner wall of the ball type voice coil motor prepared in the embodiment 2 is 0.23, and the scratch-resistant depth is 63 microns; the friction coefficient of the track material on the inner wall of the ball type voice coil motor prepared in the embodiment 3 is 0.18, and the scratch-resistant depth is 61 microns; the friction coefficient of the track material on the inner wall of the ball type voice coil motor prepared in the embodiment 4 is 0.20, and the scratch-resistant depth is 59 micrometers; the friction coefficient of the track material on the inner wall of the ball type voice coil motor prepared in the embodiment 5 is 0.22, and the scratch-resistant depth is 62 microns; the friction coefficient of the track material on the inner wall of the ball type voice coil motor prepared in the comparative example 1 is 0.29, and the scratch-resistant depth is 70 microns; the friction coefficient of the track material on the inner wall of the ball type voice coil motor prepared in the comparative example 2 is 0.30, and the scratch-resistant depth is 80 micrometers; although the bending strength of the inner wall track material of the ball type voice coil motor prepared in comparative example 3 is increased, the friction coefficient of the product is too large (up to 0.4), and debris is easily generated after friction, so that the product is not suitable for VCM. Further analysis shows that when PTFE and a filler containing no glass fiber are added to the wholly aromatic liquid crystalline polyester resin for modification, the friction coefficient and the scratch depth of the inner wall track material of the ball type voice coil motor are reduced (as in examples 1 to 5), and the friction coefficient and the scratch depth of the inner wall track material of the ball type VCM obtained without adding PTFE (as in comparative examples 1 and 2) are relatively high. The ball type voice coil motor inner wall track material prepared in the embodiments 1-5 also has excellent bending strength, and is beneficial to preparing the voice coil motor inner wall track material.
Therefore, in the embodiment of the application, the PTFE and the filler are added into the liquid crystal polyester material in parts by weight, so that the scratch resistance of the material can be greatly improved, the material can be applied to a track material on the inner wall of a voice coil motor, and the abrasion condition of a ball VCM track can be effectively improved.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a voice coil motor inner wall track material which characterized in that, voice coil motor inner wall track material's preparation raw materials include the component of following part by weight:
50-80 parts of liquid crystal polyester;
1-15 parts of polytetrafluoroethylene;
8-50 parts of a filler;
wherein the filler does not include glass fibers.
2. The material for inner wall track of voice coil motor as claimed in claim 1, wherein the material for inner wall track of voice coil motor is prepared from the following raw materials:
68-78 parts of liquid crystal polyester;
2-9 parts of polytetrafluoroethylene;
15-22 parts of a filler;
wherein the filler is composed of a first filler and a second filler, the first filler is carbon black, and the second filler is at least one selected from mica and wollastonite.
3. The voice coil motor inner wall track material as claimed in claim 2, wherein the mass ratio of the first filler to the second filler is 1: (7-10).
4. The material for inner wall track of voice coil motor as claimed in any one of claims 1 to 3, wherein the liquid crystal polyester is selected from wholly aromatic liquid crystal polyester resin; and/or the presence of a gas in the gas,
the filler is selected from at least one or two of mica, wollastonite, talc, barium sulfate, whisker and carbon black.
5. A preparation method of a voice coil motor inner wall track material is characterized by comprising the following steps:
providing a preparation raw material in the material of the inner wall track of the voice coil motor as set forth in any one of claims 1 to 4;
mixing the liquid crystal polyester resin, the polytetrafluoroethylene and the filler to obtain a mixed material;
and melting and granulating the mixed material.
6. The method according to claim 5, further comprising drying the liquid-crystalline polyester resin, the polytetrafluoroethylene, and the filler, before the mixing.
7. The method of claim 5, wherein the melt-granulating comprises: and melting and mixing the mixed materials, and then sequentially extruding, bracing, cooling and granulating.
8. The application of the liquid crystal polyester composite material in the track of the inner wall of the voice coil motor comprises the following components in parts by weight:
50-80 parts of liquid crystal polyester;
1-15 parts of polytetrafluoroethylene;
8-50 parts of a filler;
wherein the filler does not include glass fibers.
9. The use of claim 8, wherein the liquid crystalline polyester composite is prepared from raw materials comprising:
68-78 parts of liquid crystal polyester;
2-9 parts of polytetrafluoroethylene;
15-22 parts of a filler;
wherein the filler is composed of a first filler and a second filler, the first filler is carbon black, and the second filler is at least one selected from mica and wollastonite.
10. The use according to claim 8, wherein the liquid crystalline polyester is selected from wholly aromatic liquid crystalline polyester resins; and/or the presence of a gas in the atmosphere,
the filler is selected from at least one or two of mica, wollastonite, talc, barium sulfate, whisker and carbon black.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210421650.8A CN114773792A (en) | 2022-04-21 | 2022-04-21 | Voice coil motor inner wall track material and preparation method and application thereof |
| KR1020227030572A KR20230150714A (en) | 2022-04-21 | 2022-05-12 | Voice coil motor inner wall track material and its manufacturing method, application |
| PCT/CN2022/092421 WO2023201788A1 (en) | 2022-04-21 | 2022-05-12 | Track material for inner wall of voice coil motor, preparation method therefor, and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210421650.8A CN114773792A (en) | 2022-04-21 | 2022-04-21 | Voice coil motor inner wall track material and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114773792A true CN114773792A (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210421650.8A Pending CN114773792A (en) | 2022-04-21 | 2022-04-21 | Voice coil motor inner wall track material and preparation method and application thereof |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20230150714A (en) |
| CN (1) | CN114773792A (en) |
| WO (1) | WO2023201788A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2004058916A2 (en) * | 2002-12-18 | 2004-07-15 | E.I. Du Pont De Nemours And Company | High temperature lcp for wear resistance |
| CN105504698A (en) * | 2015-12-29 | 2016-04-20 | 江苏沃特特种材料制造有限公司 | Heat-resistance liquid crystal polyester resin compound and preparation method thereof |
| JP2019014787A (en) * | 2017-07-04 | 2019-01-31 | Ｊｘｔｇエネルギー株式会社 | Liquid crystal polyester composition and molded article of the same |
| CN109561792A (en) * | 2016-08-04 | 2019-04-02 | 住友化学株式会社 | Liquid crystal polyester resin compositions are used in flameproof ware and flameproof ware formation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7354887B2 (en) * | 2002-12-18 | 2008-04-08 | E. I. Du Pont De Nemours And Company | High temperature LCP for wear resistance |
| CN105542408A (en) * | 2015-12-29 | 2016-05-04 | 江苏沃特特种材料制造有限公司 | Modified wholly aromatic liquid crystal polyester resin composition and preparation method thereof |
| CN105462191B (en) * | 2015-12-29 | 2017-12-26 | 江苏沃特特种材料制造有限公司 | A kind of liquid-crystal polyester resin compound and preparation method thereof |
| CN106633680A (en) * | 2016-12-29 | 2017-05-10 | 江苏沃特特种材料制造有限公司 | Modified liquid crystal polyester resin composition, preparation method thereof and application of composition |
| CN110323921A (en) * | 2019-07-15 | 2019-10-11 | 宜兴市贵鑫磁电高科技有限公司 | A kind of camera module auto-focusing voice coil motor |
| CN113121962B (en) * | 2019-12-30 | 2022-09-16 | 深圳市沃特新材料股份有限公司 | Polytetrafluoroethylene/liquid crystal polymer composite material and preparation method thereof |
-
2022
- 2022-04-21 CN CN202210421650.8A patent/CN114773792A/en active Pending
- 2022-05-12 KR KR1020227030572A patent/KR20230150714A/en unknown
- 2022-05-12 WO PCT/CN2022/092421 patent/WO2023201788A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004058916A2 (en) * | 2002-12-18 | 2004-07-15 | E.I. Du Pont De Nemours And Company | High temperature lcp for wear resistance |
| CN105504698A (en) * | 2015-12-29 | 2016-04-20 | 江苏沃特特种材料制造有限公司 | Heat-resistance liquid crystal polyester resin compound and preparation method thereof |
| CN109561792A (en) * | 2016-08-04 | 2019-04-02 | 住友化学株式会社 | Liquid crystal polyester resin compositions are used in flameproof ware and flameproof ware formation |
| JP2019014787A (en) * | 2017-07-04 | 2019-01-31 | Ｊｘｔｇエネルギー株式会社 | Liquid crystal polyester composition and molded article of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023201788A1 (en) | 2023-10-26 |
| KR20230150714A (en) | 2023-10-31 |
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