CN116021707A - Injection molding method of PEEK material - Google Patents
Injection molding method of PEEK material Download PDFInfo
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- CN116021707A CN116021707A CN202310302039.8A CN202310302039A CN116021707A CN 116021707 A CN116021707 A CN 116021707A CN 202310302039 A CN202310302039 A CN 202310302039A CN 116021707 A CN116021707 A CN 116021707A
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- blank
- peek
- injection molding
- heat treatment
- carbon fiber
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- 239000000463 material Substances 0.000 title claims abstract description 68
- 239000004696 Poly ether ether ketone Substances 0.000 title claims abstract description 46
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229920002530 polyetherether ketone Polymers 0.000 title claims abstract description 46
- 238000001746 injection moulding Methods 0.000 title claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000003754 machining Methods 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000001035 drying Methods 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 29
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 28
- 239000004917 carbon fiber Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 18
- 238000004321 preservation Methods 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 230000036314 physical performance Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an injection molding method of a PEEK material, which relates to the technical field of PEEK material molding and comprises the following steps of drying PEEK particles, preparing PEEK powder, proportioning materials, mixing materials, extruding granulation, secondary drying, injection molding, heat treatment of a blank, rough machining of the blank, finish machining of a workpiece and secondary heat treatment of the workpiece. The invention carries out primary heat treatment on the blank before rough machining and carries out secondary heat treatment on the blank after finish machining, reduces the internal stress generated in the injection molding process and the machining process of the workpiece, and ensures the physical performance and dimensional stability.
Description
Technical Field
The invention relates to the technical field of PEEK material molding, in particular to an injection molding method of PEEK material.
Background
The PEEK material is a novel semi-crystalline aromatic plastic engineering plastic, has extremely excellent physical and mechanical properties, can replace traditional materials such as metal and ceramic in a plurality of special fields, has outstanding contribution in the aspects of reducing the mass and improving the performance, and becomes one of the most popular high-performance engineering plastics at present.
At present, PEEK materials are easy to deform during processing after injection molding, and the quality of a workpiece is affected.
Disclosure of Invention
In view of the above, the present invention aims to provide an injection molding method for PEEK material, so as to alleviate the technical problem that the PEEK material is easy to deform and affect the quality of the product when processed after injection molding.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
an injection molding method of PEEK material comprises the following operation steps:
s1: drying PEEK particles, namely placing the PEEK particles on a tray, drying the PEEK particles through an oven, wherein the temperature is set to be 150-160 ℃ and the time is set to be 2-4 hours;
s2: preparing PEEK powder, namely putting PEEK particles into a pulverizer to prepare powder;
s3: the material is prepared from the following components in parts by weight: 70 parts of PEEK powder prepared in the step S2, 30 parts of carbon fiber, 0.1 part of antioxidant and 0.3 part of lubricant;
s4: mixing materials, namely uniformly mixing the materials proportioned in the step S3 by a high-speed mixer to obtain a mixed material;
s5: extruding and granulating, namely carrying out melt extrusion on the mixed material in the step S4 through a double-screw extruder, and carrying out bracing and water-cooling granulating on the extruded mixed material in a molten state to form material particles;
s6: drying the material particles in the step S5 for 2 to 8 hours by a drying oven at the temperature of between 150 and 160 ℃;
s7: injection molding, namely putting the dried material particles in the step S5 into an injection molding machine for injection molding, and cooling to obtain a blank;
s8: heat treatment of the blank, wherein the heat treatment is carried out on the blank in the step S7 to improve the crystallinity of the blank, thereby improving the strength and chemical resistance of the blank, reducing heat residues and internal stress and reducing dimensional change at high temperature;
s9: rough machining of the blank, polishing the blank subjected to the heat treatment in the step S8, removing burrs, and controlling the flatness and roughness of the surface of the blank to obtain a rough machined part;
s10: finish machining of the workpiece, namely finish machining the rough machined workpiece in the step S9 according to the machining process of the workpiece to obtain a finish machined workpiece;
s11: and (3) carrying out secondary heat treatment on the finished product, namely carrying out heat treatment on the finished product in the step S10 again, ensuring the dimensional stability of the finished product, and carrying out secondary toughening.
Further, the carbon fibers in the step S3 are high temperature resistant carbon fibers.
Further, the carbon fiber in the step S3 is the modified carbon fiber.
Further, the heat treatment in the step S8 includes the following operation steps,
(1) Drying the blank in the step S8 by using an oven, wherein the temperature is set to 150 ℃ and the time is 3-5 h;
(2) Heating the blank product dried in the step (1) to 200-250 ℃ at a heating speed of 10 ℃/h;
(3) Carrying out heat preservation on the blank subjected to the temperature rising treatment in the step (2) for 4-6 hours;
(4) Cooling the blank in the heat preservation in the step (3) to 130 ℃ at a cooling speed of-10 ℃/h;
(5) And (3) naturally cooling the blank piece subjected to the cooling treatment in the step (4) to room temperature.
Compared with the prior art, the injection molding method of the PEEK material has the following technical effects:
(1) In the technical scheme, in the injection molding process of the PEEK material, the blank before rough machining is subjected to one-time heat treatment, so that the crystallinity of the workpiece can be improved, the strength of the workpiece is improved, the internal stress of the workpiece in the injection molding process is reduced, the stability of the material is improved, and the blank is not easy to deform in the machining process; performing secondary heat treatment on the blank after finish machining, reducing internal stress remained in the workpiece and internal stress generated in the machining process, and ensuring physical properties and dimensional stability;
secondly, adding carbon fiber into PEEK material for reinforcement in the material proportion, so that the strength and the bearing performance of the material can be improved, and the impact resistance, the flame retardance and the permeability are good; the addition of the antioxidant can slow down the oxidation of the material in the production and processing process, and ensure the performance of the material; the addition of the lubricant can reduce the flow resistance of the melt, is easy to process and mold, and ensures that the surface of the material is smoother.
In addition, the content of the carbon fiber accounts for 30% of the total amount of the carbon fiber and the PEEK material, and as the tensile strength, the bending strength, the heat distortion temperature and other performances of the composite material are gradually enhanced along with the increase of the content of the carbon fiber, the impact strength is gradually reduced, and when the content of the carbon fiber is 30%, the composite material has better comprehensive performance.
(2) The high-temperature-resistant carbon fiber has higher heat-resistant temperature, and the high-temperature-resistant carbon fiber has better stability due to higher temperature in the whole injection molding process, so that the performance of a workpiece processed in a high-temperature processing environment is more stable.
(3) The modified carbon fiber can enhance the interfacial bonding strength between the melted carbon fiber and PEEK, and improve the performance of the material.
Drawings
Fig. 1 is a flow chart of injection molding of a PEEK material according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
The embodiment provides an injection molding method of PEEK material, referring to FIG. 1, comprising the following operation steps:
s1: drying PEEK particles, namely placing the PEEK particles on a tray, drying the PEEK particles through an oven, wherein the temperature is set to be 150-160 ℃ and the time is set to be 2-4 hours;
s2: preparing PEEK powder, namely putting PEEK particles into a pulverizer to prepare powder;
s3: the material is prepared from the following components in parts by weight: 70 parts of PEEK powder prepared in the step S2, 30 parts of carbon fiber, 0.1 part of antioxidant and 0.3 part of lubricant;
s4: mixing materials, namely uniformly mixing the materials proportioned in the step S3 by a high-speed mixer to obtain a mixed material;
s5: extruding and granulating, namely carrying out melt extrusion on the mixed material in the step S4 through a double-screw extruder, and carrying out bracing and water-cooling granulating on the extruded mixed material in a molten state to form material particles;
s6: drying the material particles in the step S5 for 2 to 8 hours by a drying oven at the temperature of between 150 and 160 ℃;
s7: injection molding, namely putting the dried material particles in the step S5 into an injection molding machine for injection molding, and cooling to obtain a blank;
s8: heat treatment of the blank, wherein the heat treatment is carried out on the blank in the step S7 to improve the crystallinity of the blank, thereby improving the strength and chemical resistance of the blank, reducing heat residues and internal stress and reducing dimensional change at high temperature;
s9: rough machining of the blank, polishing the blank subjected to the heat treatment in the step S8, removing burrs, and controlling the flatness and roughness of the surface of the blank to obtain a rough machined part;
s10: finish machining of the workpiece, namely finish machining the rough machined workpiece in the step S9 according to the machining process of the workpiece to obtain a finish machined workpiece;
s11: and (3) carrying out secondary heat treatment on the finished product, namely carrying out heat treatment on the finished product in the step S10 again, ensuring the dimensional stability of the finished product, and carrying out secondary toughening.
In the technical scheme, in the injection molding process of the PEEK material, the blank before rough machining is subjected to one-time heat treatment, so that the crystallinity of the workpiece can be improved, the strength of the workpiece is improved, the internal stress of the workpiece in the injection molding process is reduced, the stability of the material is improved, and the blank is not easy to deform in the machining process; performing secondary heat treatment on the blank after finish machining, reducing internal stress remained in the workpiece and internal stress generated in the machining process, and ensuring physical properties and dimensional stability;
secondly, adding carbon fiber into PEEK material for reinforcement in the material proportion, so that the strength and the bearing performance of the material can be improved, and the impact resistance, the flame retardance and the permeability are good; the addition of the antioxidant can slow down the oxidation of the material in the production and processing process, and ensure the performance of the material; the addition of the lubricant can reduce the flow resistance of the melt, is easy to process and mold, and ensures that the surface of the material is smoother.
In addition, the content of the carbon fiber accounts for 30% of the total amount of the carbon fiber and the PEEK material, and as the tensile strength, the bending strength, the heat distortion temperature and other performances of the composite material are gradually enhanced along with the increase of the content of the carbon fiber, the impact strength is gradually reduced, and when the content of the carbon fiber is 30%, the composite material has better comprehensive performance.
More preferably, the carbon fibers in step S3 are high temperature resistant carbon fibers. In the technical scheme, the high-temperature-resistant carbon fiber has higher heat-resistant temperature, and the high-temperature-resistant carbon fiber has better stability due to higher temperature in the whole injection molding process, so that the performance of a manufactured part processed in a high-temperature processing environment is more stable.
More preferably, the carbon fiber in the step S3 is a modified carbon fiber. In the technical scheme, the modified carbon fiber can enhance the interfacial bonding strength between the melted carbon fiber and PEEK, and improve the performance of the material.
More preferably, the heat treatment in step S8 comprises the following operative steps,
(1) Drying the blank in the step S8 by using an oven, wherein the temperature is set to 150 ℃ and the time is 3-5 h;
(2) Heating the blank product dried in the step (1) to 200-250 ℃ at a heating speed of 10 ℃/h;
(3) Carrying out heat preservation on the blank subjected to the temperature rising treatment in the step (2) for 4-6 hours;
(4) Cooling the blank in the heat preservation in the step (3) to 130 ℃ at a cooling speed of-10 ℃/h;
(5) And (3) naturally cooling the blank piece subjected to the cooling treatment in the step (4) to room temperature.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (4)
1. An injection molding method of PEEK material is characterized in that: the method comprises the following operation steps:
s1: drying PEEK particles, namely placing the PEEK particles on a tray, drying the PEEK particles through an oven, wherein the temperature is set to be 150-160 ℃ and the time is set to be 2-4 hours;
s2: preparing PEEK powder, namely putting PEEK particles into a pulverizer to prepare powder;
s3: the material is prepared from the following components in parts by weight: 70 parts of PEEK powder prepared in the step S2, 30 parts of carbon fiber, 0.1 part of antioxidant and 0.3 part of lubricant;
s4: mixing materials, namely uniformly mixing the materials proportioned in the step S3 by a high-speed mixer to obtain a mixed material;
s5: extruding and granulating, namely carrying out melt extrusion on the mixed material in the step S4 through a double-screw extruder, and carrying out bracing and water-cooling granulating on the extruded mixed material in a molten state to form material particles;
s6: drying the material particles in the step S5 for 2 to 8 hours by a drying oven at the temperature of between 150 and 160 ℃;
s7: injection molding, namely putting the dried material particles in the step S6 into an injection molding machine for injection molding, and cooling to obtain a blank;
s8: heat treatment of the blank, wherein the heat treatment is carried out on the blank in the step S7;
s9: rough machining of the blank, polishing the blank subjected to the heat treatment in the step S8, removing burrs, and controlling the flatness and roughness of the surface of the blank to obtain a rough machined part;
s10: finish machining of the workpiece, namely finish machining the rough machined workpiece in the step S9 according to the machining process of the workpiece to obtain a finish machined workpiece;
s11: and (3) carrying out secondary heat treatment on the finished product, namely carrying out heat treatment on the finished product in the step S10 again, ensuring the dimensional stability of the finished product, and carrying out secondary toughening.
2. The injection molding method of PEEK material according to claim 1, wherein: and the carbon fiber in the step S3 is high-temperature-resistant carbon fiber.
3. The injection molding method of PEEK material according to claim 1, wherein: and the carbon fiber in the step S3 is modified carbon fiber.
4. The injection molding method of PEEK material according to claim 1, wherein: the heat treatment in the step S8 includes the following operation steps,
(1) Drying the blank in the step S8 by using an oven, wherein the temperature is set to 150 ℃ and the time is 3-5 h;
(2) Heating the blank product dried in the step (1) to 200-250 ℃ at a heating speed of 10 ℃/h;
(3) Carrying out heat preservation on the blank subjected to the temperature rising treatment in the step (2) for 4-6 hours;
(4) Cooling the blank in the heat preservation in the step (3) to 130 ℃ at a cooling speed of-10 ℃/h;
(5) And (3) naturally cooling the blank piece subjected to the cooling treatment in the step (4) to room temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310302039.8A CN116021707A (en) | 2023-03-27 | 2023-03-27 | Injection molding method of PEEK material |
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| CN202310302039.8A CN116021707A (en) | 2023-03-27 | 2023-03-27 | Injection molding method of PEEK material |
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| CN116021707A true CN116021707A (en) | 2023-04-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1582860A (en) * | 2003-08-20 | 2005-02-23 | 中国科学院金属研究所 | Carbon fiber inforced poly(ether-ether-ketone) composite bone fracture plate |
| WO2011072212A2 (en) * | 2009-12-11 | 2011-06-16 | Difusion Technologies, Inc. | Method of manufacturing antimicrobial implants of polyetheretherketone |
| WO2016083591A1 (en) * | 2014-11-28 | 2016-06-02 | Elringklinger Ag | Sealing element and method for producing a sealing element |
| US20180222097A1 (en) * | 2017-02-07 | 2018-08-09 | Cherry Chief Maf., Corp. | Stainless steel and synthetic resin composite molded body, and preparation method thereof |
| CN115353713A (en) * | 2022-09-07 | 2022-11-18 | 吉林省中研高分子材料股份有限公司 | Composite material for electronic cigarette and preparation method thereof |
-
2023
- 2023-03-27 CN CN202310302039.8A patent/CN116021707A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1582860A (en) * | 2003-08-20 | 2005-02-23 | 中国科学院金属研究所 | Carbon fiber inforced poly(ether-ether-ketone) composite bone fracture plate |
| WO2011072212A2 (en) * | 2009-12-11 | 2011-06-16 | Difusion Technologies, Inc. | Method of manufacturing antimicrobial implants of polyetheretherketone |
| CN102834122A (en) * | 2009-12-11 | 2012-12-19 | 扩散技术公司 | Method of manufacturing antimicrobial implants of polyetheretherketone |
| WO2016083591A1 (en) * | 2014-11-28 | 2016-06-02 | Elringklinger Ag | Sealing element and method for producing a sealing element |
| US20180222097A1 (en) * | 2017-02-07 | 2018-08-09 | Cherry Chief Maf., Corp. | Stainless steel and synthetic resin composite molded body, and preparation method thereof |
| CN115353713A (en) * | 2022-09-07 | 2022-11-18 | 吉林省中研高分子材料股份有限公司 | Composite material for electronic cigarette and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘峥等: "《塑料成型工艺及模具-设计与实践》", 重庆大学出版社, pages: 4 * |
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Application publication date: 20230428 |