CN115895082A - Composite material for touch pen conductive pen point, touch pen conductive pen point and preparation method thereof - Google Patents
Composite material for touch pen conductive pen point, touch pen conductive pen point and preparation method thereof Download PDFInfo
- Publication number
- CN115895082A CN115895082A CN202211390172.5A CN202211390172A CN115895082A CN 115895082 A CN115895082 A CN 115895082A CN 202211390172 A CN202211390172 A CN 202211390172A CN 115895082 A CN115895082 A CN 115895082A
- Authority
- CN
- China
- Prior art keywords
- conductive
- powder
- composite material
- pen
- polyethylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 39
- 239000004698 Polyethylene Substances 0.000 claims abstract description 31
- -1 polyethylene Polymers 0.000 claims abstract description 30
- 229920000573 polyethylene Polymers 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 229920001187 thermosetting polymer Polymers 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Abstract
The invention relates to a composite material for a conductive pen point of a touch pen, the conductive pen point of the touch pen and a preparation method of the conductive pen point. The composite material for the conductive pen point of the touch pen comprises conductive powder, carbon powder, polyethylene, a coupling agent and a binder. The embodiment of the invention takes the polyethylene as the main material, the polyethylene material has stable chemical property, good weather resistance, aging resistance and wear resistance and excellent processing characteristics, and the polyethylene with single molecular weight is used, so that the control of production parameters in the production process is facilitated, and the producibility is better; meanwhile, the polyethylene is in a space conjugate structure, and further is matched with conductive powder added in the formula, so that the conductivity of the manufactured pen point can be effectively improved, the writing sensitivity is improved, the internal porosity is high and the pore size distribution is uniform after the composite material is molded, the structure can play a role in reducing the whole weight of the pen point material and absorbing sound and shock, and meanwhile, the screen impact sound during writing can be effectively reduced due to proper hardness, so that better writing experience is achieved.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to a composite material for a conductive pen point of a touch control pen, the conductive pen point of the touch control pen and a preparation method of the conductive pen point of the touch control pen.
Background
With the popularization of touch screens in life and work of people, touch pens with the advantages of high touch precision, rich expanded functions, accordance with the use habits of consumers and the like have gradually become one of mainstream human-computer interaction modes.
Aiming at a capacitance pen, the principle is to simulate the touch effect of a finger, a pen point is made of a conductive material and can cause capacitance change of a touch screen matrix when contacting with a touch screen, and the conductive pen point materials of the touch pen popular in the market at present comprise conductive foam, metal, conductive fibers, conductive silica gel or conductive cloth and the like. Wherein electrically conductive bubble is cotton, conductive fiber and electrically conductive cloth material all have the problem that wear resistance is not enough to a certain extent, and the nib of metal class is scraped the touch screen easily and is colored and striking the screen when writing sound great, and electrically conductive silica gel can effectively avoid the problem that wear resistance is not enough and damage the screen, and the screen impact sound is little, but is subject to the characteristic of material itself, and electrically conductive silica gel class nib damping is great when writing, writes not smooth enough, uses easy fatigue for a long time.
Disclosure of Invention
Based on the above, the invention aims to provide a composite material for a conductive pen point of a touch pen, and the conductive pen point of the touch pen prepared from the composite material has the advantages of high writing smoothness, good wear resistance, small screen impact sound, no damage to a screen, good conductivity and the like.
The composite material for the conductive pen point of the touch pen comprises the following raw material components in parts by weight:
the polyethylene has a single molecular weight of 140 to 300 ten thousand.
The composite material for the conductive pen point of the touch pen takes polyethylene as a main material, the polyethylene material has stable chemical property, good weather resistance, aging resistance and wear resistance and excellent processing characteristics, and the polyethylene with single molecular weight is used and the molecular weight of the polyethylene is controlled, so that the control of production parameters in the production process is facilitated, and the producibility is better; meanwhile, the polyethylene is of a space conjugate structure and has certain electron conduction capability, and the conductivity of the prepared pen point can be effectively improved by further matching with the conductive powder added in the formula, so that the writing sensitivity is improved; in addition, the surface friction coefficient of the polyethylene base material can be reduced by controlling the pressure and the particle size of the powder particles, and the smoothness of writing of the pen point is improved by utilizing the bearing effect of the conductive powder; the porosity and the pore size of the composite material for the conductive pen point of the touch pen can be adjusted by matching with conductive powder materials with different particle sizes, so that the overall hardness and the dead weight of the manufactured pen point are adjusted, the porosity of the inner part of the composite material is high after the composite material is formed, the pore size is uniformly distributed, the structure can play a role in reducing the overall weight of the pen point material, absorbing sound and shock, and meanwhile, the screen impact sound during writing can be effectively reduced due to proper hardness, so that better writing experience is achieved.
Furthermore, the conductive powder is spherical conductive powder, the particle size range of the conductive powder is 8-30 mu m, so that the porosity and the pore size of the composite material for the conductive pen point of the touch pen are adjusted, and the overall hardness and the self weight of the manufactured pen point are further adjusted.
Furthermore, the conductive powder is selected from one or more of silver powder, copper powder, aluminum powder, carbon fiber powder, carbon nano tubes and graphene, and has good conductivity, so that the conductivity of the composite material is enhanced.
Further, the coupling agent is a silane coupling agent selected from one or more of a silane coupling agent KH540, a silane coupling agent KH550 and a silane coupling agent K560.
Further, the binder is a low molecular weight thermoplastic or low temperature thermoset.
Further, the binder is linear low-density polyethylene or double-component thermosetting glue.
In addition, the embodiment of the invention also provides a touch pen conductive pen tip which is prepared from the composite material for the touch pen conductive pen tip.
The conductive pen point of the touch pen provided by the embodiment of the invention has the advantages of good conductivity, high writing sensitivity, high smoothness and appropriate hardness, is beneficial to reducing screen impact sound during writing, has light self weight, and can achieve better writing experience.
In addition, the embodiment of the invention also provides a preparation method of the conductive pen point of the touch pen, which comprises the following specific operation steps:
s1, weighing conductive powder, carbon powder, polyethylene, a coupling agent and a binder according to any one of the formulas for later use;
s2, adding conductive powder, carbon powder, polyethylene and a coupling agent into a mixer, stirring and mixing under a room temperature environment while adding a binder for multiple times, and uniformly mixing for later use;
and S3, filling the mixture obtained in the step S2 into a nib mold cavity with a preset shape, pressurizing, heating, exhausting, pressure maintaining and forming, then cooling to room temperature, demolding and finishing to obtain the conductive nib of the touch pen.
The conductive pen point of the touch pen is processed in a solid-state hot press forming mode, the process control is simple, the yield is high, the quality of a finished product is stable, and the requirement of industrial batch production is met.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following more detailed description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The invention aims to provide a composite material for a conductive pen point of a touch pen, and the prepared conductive pen point of the touch pen has the advantages of high writing smoothness, good wear resistance, small impact sound of a screen, no damage to the screen, good conductivity and the like.
The composite material for the conductive pen point of the touch pen comprises the following raw material components in parts by weight:
the polyethylene has a single molecular weight of 140 to 300 ten thousand.
The composite material for the conductive pen point of the touch pen takes polyethylene as a main material, the polyethylene material has stable chemical property, good weather resistance, aging resistance and wear resistance and excellent processing characteristics, and the polyethylene with single molecular weight is used and the molecular weight of the polyethylene is controlled, so that the control of production parameters in the production process is facilitated, and the producibility is better; meanwhile, the polyethylene is of a space conjugate structure and has certain electron conduction capability, and the conductivity of the prepared pen point can be effectively improved by further matching with the conductive powder added in the formula, so that the writing sensitivity is improved; in addition, the surface friction coefficient of the polyethylene base material can be reduced by controlling the pressure and the particle size of the powder particles, and the smoothness of writing of the pen point is improved by utilizing the bearing effect of the conductive powder; the porosity and the pore size of the composite material for the conductive pen point of the touch pen can be adjusted by further matching with conductive powder with different particle sizes, so that the overall hardness and the self weight of the manufactured pen point can be adjusted, the porosity of the composite material after molding is high, the pore size distribution is uniform, the structure can play a role in reducing the overall weight of the pen point material, absorbing sound and absorbing shock, and meanwhile, the screen impact sound during writing can be effectively reduced due to proper hardness, so that better writing experience is achieved.
The conductive powder is spherical, the particle size of the conductive powder ranges from 8 to 30 mu m, so that the porosity and the pore size of the composite material for the conductive pen point of the touch pen are adjusted, and the overall hardness and the self weight of the manufactured pen point are further adjusted.
Further preferably, the conductive powder is selected from one or more of silver powder, copper powder, aluminum powder, carbon fiber powder, carbon nanotubes and graphene, and the conductive powder has good conductivity and is beneficial to enhancing the conductivity of the composite material.
The coupling agent is a silane coupling agent and is selected from one or more of a silane coupling agent KH540, a silane coupling agent KH550 and a silane coupling agent K560.
The binder is a low molecular weight thermoplastic material, such as linear low density PE, or a low temperature thermoset material, such as a two-part thermoset glue.
The invention will be described in further detail below with reference to specific examples and comparative examples, and the composition of each example of the composite material for the nib of the capacitive pen of the invention and the composition of the other comparative examples of the nib material are shown in table 1 below:
TABLE 1 (unit: parts by weight)
Example 4
The preparation method of the conductive pen tip composite material for the touch pen in the embodiment 4 of the invention comprises the following specific operation steps:
s1, weighing 3 parts of conductive powder, 7 parts of carbon powder, 110 parts of polyethylene, 1 part of coupling agent and 2 parts of binder according to the parts by weight in the formula for later use, wherein the conductive powder is silver powder, copper powder and graphene, the coupling agent is a silane coupling agent KH540, and the binder is linear low-density polyethylene;
s2, adding conductive powder, carbon powder, polyethylene and a coupling agent into a mixer, stirring and mixing under a room temperature environment while adding a binder for multiple times, and uniformly mixing for later use;
and S3, filling the mixture obtained in the step S2 into a pen point mold cavity in a preset shape, pressurizing, heating, exhausting, maintaining pressure, forming, cooling to room temperature, demolding, and finishing to obtain the conductive pen point of the touch pen.
Example 5
The preparation method of the conductive pen tip composite material for the touch pen in the embodiment 5 of the invention comprises the following specific operation steps:
s1, weighing 4 parts of conductive powder, 8 parts of carbon powder, 120 parts of polyethylene, 2 parts of coupling agent and 3 parts of binder according to the parts by weight in the formula for later use, wherein the conductive powder is aluminum powder and carbon fiber powder, the coupling agent is silane coupling agent K560, and the binder is double-component thermosetting glue;
s2, adding conductive powder, carbon powder, polyethylene and a coupling agent into a mixer, stirring and mixing under a room temperature environment while adding a binder for multiple times, and uniformly mixing for later use;
and S3, filling the mixture obtained in the step S2 into a nib mold cavity with a preset shape, pressurizing, heating, exhausting, pressure maintaining and forming, then cooling to room temperature, demolding and finishing to obtain the conductive nib of the touch pen.
Example 6
The preparation method of the conductive pen tip composite material for the touch pen in the embodiment 6 of the invention comprises the following specific operation steps:
s1, weighing 5 parts of conductive powder, 9 parts of carbon powder, 130 parts of polyethylene, 3 parts of coupling agent and 4 parts of binder according to the parts by weight in the formula for later use, wherein the conductive powder is aluminum powder, carbon nano tubes and graphene, the coupling agent is a silane coupling agent KH550 and a silane coupling agent K560, and the binder is double-component thermosetting glue;
s2, adding the conductive powder, the carbon powder, the polyethylene and the coupling agent into a mixer, stirring and mixing under a room temperature environment, adding the binder for multiple times, and uniformly mixing for later use;
and S3, filling the mixture obtained in the step S2 into a pen point mold cavity in a preset shape, pressurizing, heating, exhausting, maintaining pressure, forming, cooling to room temperature, demolding, and finishing to obtain the conductive pen point of the touch pen.
Example 7
Inventive example 7 performance tests were conducted using various stylus tips obtained by the methods described in any of examples 4-6 prepared from the materials of examples 1-3 and comparative examples 1-2, and the test results are given in table 2 below:
TABLE 2
From the above table, the conductive pen point of the touch pen provided by the embodiment of the invention has the advantages of good wear resistance, proper hardness, drop resistance, good conductivity, high writing sensitivity, small writing resistance, small screen impact sound during writing and good writing experience.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The composite material for the conductive pen point of the touch pen is characterized by comprising the following raw material components in parts by weight:
the polyethylene has a single molecular weight of 140 to 300 ten thousand.
2. The composite material for a conductive tip of a stylus according to claim 1, wherein: the conductive powder is spherical conductive powder, and the particle size range of the conductive powder is 8-30 mu m.
3. The composite material for a conductive tip of a stylus according to claim 1, wherein: the conductive powder is selected from one or more of silver powder, copper powder, aluminum powder, carbon fiber powder, carbon nano tubes and graphene.
4. The composite material for a conductive tip of a stylus according to claim 1, wherein: the coupling agent is a silane coupling agent and is selected from one or more of a silane coupling agent KH540, a silane coupling agent KH550 and a silane coupling agent K560.
5. The composite material for a conductive tip of a stylus according to claim 1, wherein: the binder is a low molecular weight thermoplastic material or a low temperature thermoset material.
6. The composite material for a conductive tip of a stylus according to claim 5, wherein: the binder is linear low-density polyethylene or double-component thermosetting glue.
7. A conductive nib for a stylus, comprising: prepared from the composite material for the conductive pen tip of the touch pen as claimed in any one of claims 1 to 6.
8. A preparation method of a conductive pen point of a touch pen is characterized by comprising the following specific operation steps:
s1, weighing conductive powder, carbon powder, polyethylene, a coupling agent and a binder according to the formula of any one of claims 1 to 6 for later use;
s2, adding conductive powder, carbon powder, polyethylene and a coupling agent into a mixer, stirring and mixing under a room temperature environment while adding a binder for multiple times, and uniformly mixing for later use;
and S3, filling the mixture obtained in the step S2 into a nib mold cavity with a preset shape, pressurizing, heating, exhausting, pressure maintaining and forming, then cooling to room temperature, demolding and finishing to obtain the conductive nib of the touch pen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211390172.5A CN115895082A (en) | 2022-11-08 | 2022-11-08 | Composite material for touch pen conductive pen point, touch pen conductive pen point and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211390172.5A CN115895082A (en) | 2022-11-08 | 2022-11-08 | Composite material for touch pen conductive pen point, touch pen conductive pen point and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115895082A true CN115895082A (en) | 2023-04-04 |
Family
ID=86477746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211390172.5A Withdrawn CN115895082A (en) | 2022-11-08 | 2022-11-08 | Composite material for touch pen conductive pen point, touch pen conductive pen point and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115895082A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053737A (en) * | 2010-12-27 | 2011-05-11 | 清华大学 | Touch pen |
| CN109957165A (en) * | 2019-03-28 | 2019-07-02 | 广州视源电子科技股份有限公司 | Touch-control pen tip composite material, stylus and its pen tip forming method |
| CN110607072A (en) * | 2019-09-12 | 2019-12-24 | 广州视源电子科技股份有限公司 | Pen point composite material of capacitive pen, passive capacitive pen and pen point preparation method thereof |
| CN112416150A (en) * | 2020-11-19 | 2021-02-26 | 深圳普力美科技有限公司 | High-wear-resistance low-noise plastic pen point with conductive filler and production method thereof |
-
2022
- 2022-11-08 CN CN202211390172.5A patent/CN115895082A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053737A (en) * | 2010-12-27 | 2011-05-11 | 清华大学 | Touch pen |
| CN109957165A (en) * | 2019-03-28 | 2019-07-02 | 广州视源电子科技股份有限公司 | Touch-control pen tip composite material, stylus and its pen tip forming method |
| CN110607072A (en) * | 2019-09-12 | 2019-12-24 | 广州视源电子科技股份有限公司 | Pen point composite material of capacitive pen, passive capacitive pen and pen point preparation method thereof |
| CN112416150A (en) * | 2020-11-19 | 2021-02-26 | 深圳普力美科技有限公司 | High-wear-resistance low-noise plastic pen point with conductive filler and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 罗河胜 编: "《塑料材料手册》", 广东科技出版社, pages: 155 - 156 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104072881B (en) | A kind of thermoplasticity fretting map vibration-absorptive material and preparation method thereof | |
| CN107629443B (en) | Microcellular foamed conductive thermoplastic elastomer material with pressure-sensitive characteristic and production method thereof | |
| CN109233283B (en) | Three-dimensional graphene composite material capable of being used as strain sensor and preparation method thereof | |
| CN103012871B (en) | Natural rubber foam material and preparation method thereof | |
| CN109880221B (en) | Composite material for touch control pen point, pen point and preparation method | |
| CN110607072A (en) | Pen point composite material of capacitive pen, passive capacitive pen and pen point preparation method thereof | |
| CN107163567A (en) | It is a kind of for high-strength nylon composite of 3D printing and preparation method thereof | |
| CN115895082A (en) | Composite material for touch pen conductive pen point, touch pen conductive pen point and preparation method thereof | |
| CN103897228A (en) | Novel efficient non-slip rubber material and preparation process thereof | |
| CN1259281C (en) | Silicon nitride - boron nitride- silicon dioxide ceramic wave-transparent material and preparation process thereof | |
| CN105754361B (en) | A kind of facing bamboo modeling heat conduction wallboard and its processing method with anion | |
| CN111171572A (en) | Passive capacitive pen nib, passive capacitive pen and nib manufacturing method | |
| CN107522889A (en) | The preparation method of expandable thermoplastic graphene porous carbon materials | |
| CN103408859A (en) | Composite sound absorption plastic preparation method | |
| CN109957165B (en) | Touch pen point composite material, touch pen and pen point forming method thereof | |
| CN105820496A (en) | Graphene/ glass fiber reinforced ABS composite and preparation method thereof | |
| CN107501843B (en) | A kind of preparation method of the inexpensive expandable microspheres for flexibilizing ABS foamed plastics | |
| CN105528096B (en) | A kind of mouse | |
| CN110903639B (en) | Stylus pen point composite material, stylus pen and pen point preparation method | |
| CN110396234A (en) | The preparation method of touch-control pen tip | |
| CN107523033B (en) | A kind of PC bucket with good scratch resistance energy | |
| CN112157909A (en) | Manufacturing process of TPU (thermoplastic polyurethane) -based high-performance automobile instrument panel | |
| CN108623928A (en) | A kind of suction wave foam and preparation method thereof | |
| CN108864648B (en) | Preparation method of high-stability conductive plastic with good mechanical property | |
| CN109852045A (en) | A kind of microporous foam long carbon fiber enhancing PA11 material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230404 |