CN108384186B - Polyether-ether-ketone composite material for bearing and preparation method thereof - Google Patents
Polyether-ether-ketone composite material for bearing and preparation method thereof Download PDFInfo
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- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
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Abstract
The invention provides a polyether-ether-ketone composite material for a bearing and a preparation method thereof, belonging to the technical field of composite material preparation processes. The composite material comprises the following components in parts by weight: 40-50 parts of polyether-ether-ketone coarse powder, 30-40 parts of polyether-ether-ketone fine powder, 15-20 parts of antifriction materials, 10-15 parts of reinforcing materials and 5-10 parts of lubricating materials; the particle size of the polyether-ether-ketone coarse powder is less than 5mm, and the particle size of the polyether-ether-ketone fine powder is greater than 500 meshes. The invention also provides a preparation method of the polyether-ether-ketone composite material for the bearing. The composite material has lower abrasion and stronger impact strength, and can greatly improve the load capacity of the bearing and prolong the service life of the steel-backed bearing.
Description
Technical Field
The invention belongs to the technical field of composite material preparation processes, and particularly relates to a polyether-ether-ketone composite material for a bearing and a preparation method thereof.
Background
The bearing polyether-ether-ketone composite material is based on polyether-ether-ketone and is compounded with a material for improving the application performance of a bearing product, and has a series of advantages of low friction coefficient, high load, low abrasion, high temperature resistance, oil-free lubrication and the like. At present, the bearing is mainly applied to the use working conditions of high temperature, heavy load and large impact, and is successfully applied to the fields of heavy-duty automobile steering knuckle parts, rubber manufacturing equipment and the like, and the service life of the bearing made of the original material is prolonged. And simultaneously, the method is also applied to the field of oil-free lubrication of hydraulic engineering equipment.
The polyether-ether-ketone composite material for the bearing is applied to the field of the bearing, so that a bearing product with higher performance is provided, the polyether-ether-ketone composite material for the bearing is used for mechanical vulnerable parts such as oil-free self-lubricating parts, oil-containing lubricating parts and oil-less lubricating parts, particularly severe working conditions such as high temperature and polluted occasions, the maintenance period of equipment can be greatly prolonged, the use of lubricating oil is reduced, the production efficiency is improved, and great social benefits are brought to the society. The polyetheretherketone composite material for domestic bearings is in the stage of development and application field testing.
Disclosure of Invention
The invention aims to provide a polyether-ether-ketone composite material for a bearing and a preparation method thereof, wherein the composite material has lower abrasion and stronger impact strength, and greatly improves the load capacity and the service life of a steel-backed bearing.
The invention firstly provides a polyether-ether-ketone composite material for a bearing, which comprises the following components in parts by weight:
the particle size of the polyether-ether-ketone coarse powder is less than 5mm, and the particle size of the polyether-ether-ketone fine powder is greater than 500 meshes.
Preferably, the melt index of the polyether-ether-ketone coarse powder is 80-90g/10 min; the melt index of the polyetheretherketone fine powder is 80-90g/10 min.
Preferably, the particle size of the polyether-ether-ketone coarse powder is 1-5 mm; the particle size of the polyetheretherketone fine powder is 500-700 meshes.
Preferably, the friction reducing material comprises polytetrafluoroethylene and/or zinc sulphide.
Preferably, the particle size of the antifriction material is 300 meshes.
Preferably, the reinforcing material comprises short fibers with the surfaces treated by the high-temperature coupling agent, and the length of the short fibers is 5 mm.
Preferably, the short fibers comprise carbon fibers or glass fibers.
Preferably, the reinforcing material is a product model T700 manufactured by Dongli corporation of Japan.
Preferably, the lubricating material is graphite or molybdenum disulfide, and the particle size of the lubricating material is 300 meshes.
The invention also provides a preparation method of the polyether-ether-ketone composite material for the bearing, which comprises the following steps:
the method comprises the following steps: according to the formula, putting the polyether-ether-ketone fine powder, the antifriction material and the lubricating material into a dispersing machine for dispersing and mixing to obtain a mixed raw material;
step two: and (2) mixing the mixed raw material obtained in the step one with the polyether-ether-ketone coarse powder, putting the mixed material into a double-screw extruder, simultaneously carrying out side feeding on the reinforced material, cooling, screening and sealing and packaging the obtained particles to obtain the polyether-ether-ketone composite material for the bearing.
The invention has the advantages of
The invention provides a polyether-ether-ketone composite material for bearings, which takes polyether-ether-ketone coarse powder and polyether-ether-ketone fine powder as main components, and adds an antifriction material, a lubricating material and a reinforcing material at the same time to compound to form the polyether-ether-ketone composite material; compared with the I-type (polytetrafluoroethylene) and II-type (POM) steel back bearings in the prior art, the invention controls the content and the particle size of each component and the melt index of the polyether-ether-ketone, so that the finally obtained composite material has lower abrasion and stronger impact strength, and the composite material can greatly improve the load capacity of the bearing and the service life of the steel back bearing when applied to the bearing.
The invention also provides a preparation method of the polyether-ether-ketone composite material for the bearing, the preparation method is simple, the raw materials are easy to obtain, and the prepared composite material has lower abrasion and stronger impact strength.
Detailed Description
The invention firstly provides a polyether-ether-ketone composite material for a bearing, which comprises the following components in parts by weight:
the particle size of the polyether-ether-ketone coarse powder is less than 5mm, preferably 1-5 mm; the particle size of the polyetheretherketone fine powder is more than 500 meshes, preferably 500-700 meshes.
According to the invention, the composite material takes the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder as main components, when only the polyether-ether-ketone coarse powder exists, as the antifriction material and the lubricating material are both fine powder, the polyether-ether-ketone coarse powder is directly mixed with the antifriction material, and the coarse powder cannot be well mixed with the fine powder, so that the stability of the product is influenced; when only the polyetheretherketone fine powder is used, after the polyetheretherketone fine powder is mixed with the antifriction material and the lubricating material, the mixture is placed into an extruder at the later stage, the feeding is not smooth, the flowability is poor, and the stability of a final product is also influenced; therefore, only when the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder are matched with each other for use, the composite material with both properties can be obtained.
According to the invention, the melt index of the polyether-ether-ketone coarse powder is preferably 80-90g/10 min; the preferred melt index of the polyetheretherketone fine powder is 80-90g/10 min. The invention should strictly control the melt index of the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder, when the melt index of the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder is lower than 80g/10min, the viscosity is too high, and the moldability is poor when the later-stage extrusion granulation is carried out, so that the product performance is influenced; when the melt index of the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder is higher than 90g/10min, the viscosity is too low, and the toughness of a final product is influenced. Therefore, the composite material with both properties can be obtained only by simultaneously and reasonably controlling the melt indexes of the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder.
According to the invention, the friction-reducing material comprises polytetrafluoroethylene and/or zinc sulphide; the particle size of the antifriction material is preferably 300 meshes. According to the invention, the lubricating material is graphite or molybdenum disulfide, and the particle size of the lubricating material is 300 meshes.
The particle sizes of the antifriction material and the lubricating material of the invention depend on the particle size of the polyetheretherketone fine powder, and the antifriction material and the lubricating material can be better dispersed and uniformly mixed only when the particle sizes of the antifriction material and the lubricating material are equal, so that the finally obtained product has stable performance.
According to the invention, the reinforcing material comprises short fibers with the surface treated by a high-temperature coupling agent, the length of the short fibers is preferably 5mm, and the short fibers comprise carbon fibers or glass fibers. The short fiber treated at high temperature is adopted in the invention because the short fiber treated by the high-temperature coupling agent can enhance the bonding force with the polyetheretherketone and improve the performance of the material, the source of the reinforced material is not particularly limited, the reinforced material is available on the market, and the product model number of the reinforced material is T700 preferably produced by Nippon Dongli company.
The invention also provides a preparation method of the polyether-ether-ketone composite material for the bearing, which comprises the following steps:
the method comprises the following steps: according to the formula, the polyetheretherketone fine powder, the antifriction material and the lubricating material are placed into a dispersing machine for dispersion and mixing, before the raw materials are placed into the dispersing machine for mixing, the raw materials are preferably dried firstly, the drying temperature is 140 ℃, the drying time is preferably 4-6 hours, the dried raw materials are naturally cooled and placed into the dispersing machine for dispersing, the low-speed dispersion is preferably carried out firstly for 10-15 minutes, the rotating speed is preferably 200-300rpm, then the high-speed dispersion is carried out for 10-15 minutes, the rotating speed is preferably 2500-3000rpm, so that the components are fully and uniformly dispersed, and the mixed raw materials are obtained;
step two: putting the mixed raw material obtained in the step one and the polyether-ether-ketone coarse powder into a mixer for mixing, wherein the rotation speed of the mixer is preferably 200-300rpm to obtain a mixed material, putting the mixed material into a double-screw extruder, and simultaneously carrying out side feeding on a reinforcing material for feeding, wherein the extrusion temperature of the extruder is preferably 170-175 ℃, the aperture of a die of the extruder is 2mm to obtain particles, and the size of the particles is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing.
The present invention is described in further detail below with reference to specific examples, in which the starting materials are all commercially available.
Example 1
1) Drying the polyether-ether-ketone coarse powder, the polyether-ether-ketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fibers in a constant-temperature drying oven at the drying temperature of 120 ℃ for 6 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 3000g of polyetheretherketone fine powder (with a melt index of 80g/10min and a particle size of 500 meshes), 1000g of polytetrafluoroethylene (with a particle size of 300 meshes), 500g of graphite (with a particle size of 300 meshes) and 500g of zinc sulfide (with a particle size of 300 meshes) according to a formula, dispersing for 15 minutes at a rotating speed of 200rpm to fully mix the components, and then dispersing for 15 minutes at a rotating speed of 2500rpm to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 4000g of polyetheretherketone coarse powder (the melt index is 80g/10min, the particle size is 1mm), putting the mixed materials into a double-screw extruder at the rotating speed of 200rpm, and simultaneously feeding 1000g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 170 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in example 1 are shown in table 1.
Example 2
1) Drying the polyether-ether-ketone coarse powder, the polyether-ether-ketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fibers in a constant-temperature drying oven at the drying temperature of 140 ℃ for 4 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 4000g of polyetheretherketone fine powder (with a melt index of 90g/10min and a particle size of 700 meshes), 1500g of polytetrafluoroethylene (with a particle size of 300 meshes), 1000g of graphite (with a particle size of 300 meshes) and 1000g of zinc sulfide (with a particle size of 300 meshes) according to a formula, dispersing for 10 minutes at a rotating speed of 300rpm to fully mix the components, and then dispersing for 10 minutes at a rotating speed of 3000rpm to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 5000g of polyether-ether-ketone coarse powder (the melt index is 90g/10min, the particle size is 5mm), putting the mixed materials into a double-screw extruder at the rotating speed of 300rpm, and simultaneously feeding 1500g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 175 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in example 2 are shown in table 1.
Example 3
1) Drying the polyether-ether-ketone coarse powder, the polyether-ether-ketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fibers in a constant-temperature drying oven at the drying temperature of 130 ℃ for 5 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 3500g of polyetheretherketone fine powder (the melt index is 85g/10min, the particle size is 600 meshes), 1200g of polytetrafluoroethylene (the particle size is 300 meshes), 800g of graphite (the particle size is 300 meshes) and 600g of zinc sulfide (the particle size is 300 meshes) according to the formula, dispersing for 12 minutes at the rotating speed of 250rpm to fully mix the components, and then dispersing for 12 minutes at the rotating speed of 2800rpm to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 4500g of polyether ether ketone coarse powder (the melt index is 85g/10min, the particle size is 3mm), putting the mixed materials into a double-screw extruder at the rotating speed of 250rpm, and simultaneously feeding 1200g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 172 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in example 3 are shown in table 1.
Example 4
1) Drying the polyether-ether-ketone coarse powder, the polyether-ether-ketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fibers in a constant-temperature drying oven at the drying temperature of 130 ℃ for 5 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 3200g of polyetheretherketone fine powder (with a melt index of 85g/10min and a particle size of 600 meshes), 1100g of polytetrafluoroethylene (with a particle size of 300 meshes), 600g of graphite (with a particle size of 300 meshes) and 600g of zinc sulfide (with a particle size of 300 meshes) according to a formula, dispersing for 12 minutes at a rotating speed of 250rpm to fully mix the components, and then dispersing for 12 minutes at a rotating speed of 2700rpm to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 4200g of polyether ether ketone coarse powder (the melt index is 85g/10min, the particle size is 2mm), putting the mixed materials into a double-screw extruder at the rotating speed of 250rpm, and simultaneously feeding 1100g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 172 ℃, the aperture of a die of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in example 4 are shown in table 1.
Example 5
1) Drying the polyether-ether-ketone coarse powder, the polyether-ether-ketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fibers in a constant-temperature drying oven at the drying temperature of 130 ℃ for 5 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 3800g of polyetheretherketone fine powder (with a melt index of 85g/10min and a particle size of 600 meshes), 1400g of polytetrafluoroethylene (with a particle size of 300 meshes), 800g of graphite (with a particle size of 300 meshes) and 800g of zinc sulfide (with a particle size of 300 meshes) according to a formula, dispersing for 12 minutes at a rotating speed of 250rpm to fully mix the components, and then dispersing for 12 minutes at a rotating speed of 2800rpm to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 4800g of polyether-ether-ketone coarse powder (the melt index is 85g/10min, the particle size is 4mm), putting the mixed materials into a double-screw extruder at the rotating speed of 250rpm, and simultaneously feeding 1400g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli corporation) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 172 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in example 5 are shown in table 1.
Comparative example 1
1) Drying the polyether-ether-ketone coarse powder, the polyether-ether-ketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fibers in a constant-temperature drying oven at the drying temperature of 130 ℃ for 5 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 3500g of polyetheretherketone fine powder (with a melt index of 70g/10min and a particle size of 600 meshes), 1200g of polytetrafluoroethylene (with a particle size of 300 meshes), 800g of graphite (with a particle size of 300 meshes) and 600g of zinc sulfide (with a particle size of 300 meshes) according to a formula, dispersing for 12 minutes at a rotating speed of 250rpm to fully mix the components, and then dispersing for 12 minutes at a rotating speed of 2800rpm to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 4500g of polyether ether ketone coarse powder (the melt index is 70g/10min, the particle size is 3mm), putting the mixed materials into a double-screw extruder at the rotating speed of 250rpm, and simultaneously feeding 1200g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 172 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in comparative example 1 are shown in table 1.
Comparative example 2
1) Drying the polyether-ether-ketone coarse powder, the polyether-ether-ketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fibers in a constant-temperature drying oven at the drying temperature of 130 ℃ for 5 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 3500g of polyetheretherketone fine powder (with a melt index of 100g/10min and a particle size of 600 meshes), 1200g of polytetrafluoroethylene (with a particle size of 300 meshes), 800g of graphite (with a particle size of 300 meshes) and 600g of zinc sulfide (with a particle size of 300 meshes) according to a formula, dispersing for 12 minutes at a rotating speed of 250rpm to fully mix the components, and then dispersing for 12 minutes at a rotating speed of 2800rpm to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 4500g of polyether ether ketone coarse powder (the melt index is 100g/10min, the particle size is 3mm), putting the mixed materials into a double-screw extruder at the rotating speed of 250rpm, and simultaneously feeding 1200g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 172 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in comparative example 2 are shown in table 1.
Comparative example 3
1) Drying the polyether-ether-ketone coarse powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fiber in a constant-temperature drying oven at the drying temperature of 130 ℃ for 5 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 1200g of polytetrafluoroethylene (with the particle size of 300 meshes), 800g of graphite (with the particle size of 300 meshes) and 600g of zinc sulfide (with the particle size of 300 meshes) according to a formula, dispersing in a dispersing machine at the rotating speed of 250rpm for 12 minutes to fully mix the components, and then dispersing at the rotating speed of 2800rpm for 12 minutes to obtain a mixed raw material;
3) mixing the mixed raw materials obtained in the step 2) with 4500g of polyether ether ketone coarse powder (the melt index is 85g/10min, the particle size is 3mm), putting the mixed materials into a double-screw extruder at the rotating speed of 250rpm, and simultaneously feeding 1200g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company) in a side feeding way, wherein the extrusion temperature of the extruder is preferably 172 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the particle size is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in comparative example 3 are shown in table 1.
Comparative example 4
1) Drying the polyetheretherketone fine powder, polytetrafluoroethylene, graphite, zinc sulfide and carbon fiber in a constant-temperature drying oven at the drying temperature of 130 ℃ for 5 hours;
2) naturally cooling the dried raw materials to room temperature, weighing 3500g of polyetheretherketone fine powder (the melt index is 85g/10min, the particle size is 600 meshes), 1200g of polytetrafluoroethylene (the particle size is 300 meshes), 800g of graphite (the particle size is 300 meshes) and 600g of zinc sulfide (the particle size is 300 meshes) according to the formula, dispersing for 12 minutes at the rotating speed of 250rpm to fully mix the components, and then dispersing for 12 minutes at the rotating speed of 2800rpm to obtain a mixed raw material;
3) putting the mixed raw materials obtained in the step 2) into a double-screw extruder, and simultaneously carrying out side feeding and feeding on 1200g of chopped carbon fibers (the product model number is T700 produced by Nippon Dongli company), wherein the extrusion temperature of the extruder is preferably 172 ℃, the aperture of a mouth mold of the extruder is 2mm, so as to obtain particles, and the size of the particles is controlled to be 1-1.5mm in diameter and 1-1.5mm in length; and then cooling, screening by a 30-mesh grading screen, and sealing and packaging to obtain the polyether-ether-ketone composite material for the bearing. The properties of the polyetheretherketone composite prepared in comparative example 4 are shown in table 1.
TABLE 1
As can be seen from Table 1, the size of the melt index of the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder has an influence on the mechanical property of the composite material, and as can be seen from examples 1-5 and comparative example 1 of the invention, the product elongation at break is reduced due to the excessively small melt index, and the property is reflected as the product brittleness, which is not beneficial to the downstream application of the product; as can be seen from examples 1-5 and comparative example 2 of the invention, the mechanical bending property of the product is reduced due to the excessively large melt index, and the performance is reflected as insufficient rigidity of the product, so that the load resistance of the product is reduced; on the other hand, as can be seen from examples 1 to 5 and comparative examples 3 and 4 of the present invention, the ratio of the polyether ether ketone coarse powder and the polyether ether ketone fine powder seriously affects the extrusion granulation process, and both the friction coefficient and the abrasion are increased in the performance detection data of the product, so that the abrasion resistance of the product is reduced. Therefore, only when the polyether-ether-ketone coarse powder and the polyether-ether-ketone fine powder are matched with each other for use, the composite material with both properties can be obtained.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The polyether-ether-ketone composite material for the bearing is characterized by comprising the following components in parts by weight:
the melt index of the polyether-ether-ketone coarse powder is 80-90g/10 min; the melt index of the polyetheretherketone fine powder is 80-90g/10 min;
the particle size of the polyether-ether-ketone coarse powder is 1-5 mm; the particle size of the polyetheretherketone fine powder is 500-700 meshes.
2. The peek composite material of claim 1, wherein the friction-reducing material comprises ptfe and/or zn.
3. The polyetheretherketone composite material of claim 1, wherein the friction reducing material has a particle size of 300 mesh.
4. The polyetheretherketone composite material for a bearing according to claim 1, wherein the reinforcing material comprises short fibers having a surface treated with a high temperature coupling agent, and the length of the short fibers is 5 mm.
5. The PEEK composite material for bearings of claim 4, wherein the short fibers comprise carbon fibers or glass fibers.
6. The polyetheretherketone composite material of claim 1, wherein the reinforcing material is T700 manufactured by eastern japan.
7. The polyetheretherketone composite material of claim 1, wherein the lubricant material is graphite or molybdenum disulfide, and the particle size of the lubricant material is 300 meshes.
8. A method of preparing a PEEK composite for bearings according to any of claims 1 to 7, comprising:
the method comprises the following steps: according to the formula, putting the polyether-ether-ketone fine powder, the antifriction material and the lubricating material into a dispersing machine for dispersing and mixing to obtain a mixed raw material;
step two: and (2) mixing the mixed raw material obtained in the step one with the polyether-ether-ketone coarse powder, putting the mixed material into a double-screw extruder, simultaneously carrying out side feeding on the reinforced material, cooling, screening and sealing and packaging the obtained particles to obtain the polyether-ether-ketone composite material for the bearing.
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| CN110079048A (en) * | 2019-05-06 | 2019-08-02 | 辽宁华兴橡塑制品有限公司 | High temperature high voltage resistant sealing element and its production technology |
| CN117024910B (en) * | 2023-09-13 | 2024-04-05 | 江苏君华特种高分子材料股份有限公司 | PEEK modified material with high fluidity and transparency and preparation method thereof |
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| CN104788896A (en) * | 2015-04-27 | 2015-07-22 | 吉林省中研高性能工程塑料股份有限公司 | Anti-static polyether-ether-ketone composite and preparation method thereof |
| CN107383771A (en) * | 2017-08-16 | 2017-11-24 | 宜宾天原集团股份有限公司 | A kind of polyether-ether-ketone composite material and preparation method thereof |
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| DE102014222283A1 (en) * | 2014-10-31 | 2016-05-04 | Aktiebolaget Skf | Plastic self-lubricating bearing cage |
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| CN104788896A (en) * | 2015-04-27 | 2015-07-22 | 吉林省中研高性能工程塑料股份有限公司 | Anti-static polyether-ether-ketone composite and preparation method thereof |
| CN107383771A (en) * | 2017-08-16 | 2017-11-24 | 宜宾天原集团股份有限公司 | A kind of polyether-ether-ketone composite material and preparation method thereof |
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