CN107857970A - A kind of large scale PEEK/TPI alloy screws and its compression molding preparation method - Google Patents
A kind of large scale PEEK/TPI alloy screws and its compression molding preparation method Download PDFInfo
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- CN107857970A CN107857970A CN201711258840.8A CN201711258840A CN107857970A CN 107857970 A CN107857970 A CN 107857970A CN 201711258840 A CN201711258840 A CN 201711258840A CN 107857970 A CN107857970 A CN 107857970A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/16—Condensation polymers of aldehydes or ketones with phenols only of ketones with phenols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The present invention relates to a kind of large scale PEEK/TPI alloy screws, including it is the female screw of PEEK/TPI alloy materials and positive screw rod, above-mentioned PEEK/TPI alloy materials formula is in parts by mass：The mass parts of PEEK resin particles 70 90, the mass parts of TPI powder 10 30, the mass parts of molybdenum disulfide powder 5 15, granularity are the mass parts of carbon fiber 15 35 of the mesh of 50 mesh 300.The invention further relates to the method for the above-mentioned large scale screw rod of compression molding, first by PEEK resin particles and TPI powder mixed at high speed extrusion granulator, add auxiliary material mixed at high speed again, with the material compression molding large scale screw rod obtained by secondary mixed at high speed, screw rod has preferable self lubricity, thermostabilization dimensional performance is good, noise is low, wear-resisting and service life is grown, be exclusively used in uninterruptedly running at high speed, high temperature, oil-free lubrication condition of work under, the pollution to equipment and end product is avoided, it is green.
Description
Technical field
The present invention relates to a kind of alloy screw, and in particular to a kind of PEEK/TPI alloy screws and its compression molding preparation side
Method.
Background technology
Screw rod is the main rotation member of compressor and vavuum pump, and during running at high speed, the material of screw rod must have
There are high intensity, high temperature resistant, high-wear resistance, but traditional screw rod is generally metal material, wear rate in metal screw use
It is big to be lubricated, it is necessary to be used as by the use of oil.
Compressor, vavuum pump have oil or oil-free generally refer to oil content in the gas that compressor is discharged number,
General have that oil machine oil content is larger, and no oil machine oil content is 0.01ppm.Being increasingly being used for without oil machine will to air quality
Very high application scenario is asked, such as：The industries such as food, medicine and cotton spinning.
Polyether-ether-ketone, abbreviation PEEK, it is a kind of high intensity, high temperature resistant, corrosion-resistant, self-lubricating, the high-performance spy of rub resistance
Kind engineering plastics, addition carbon fiber, polytetrafluoroethylene (PTFE)（Abbreviation PTFE）And other packing materials, it is possible to increase PEEK intensity,
Thermostabilization is dimensional, self lubricity and wear rate, its is applied to the material demand of screw rod.
Chinese invention patent CN103457378B discloses a kind of PEEK rotor, and what the patent of invention solved is existing metal
Detent torque existing for material rotor is big, starts to the time length for playing work efficiency, and sealing is poor, frequent the problem of colliding rapid wear；
Meanwhile the conductivity issues of rotor are also solved, rotor is met the needs of the working environment for eliminating electrostatic.The patent of invention is although right
PEEK materials have done modified enhancing, if but the rotor of the patent of invention is applied into oilless (oil free) compressor or oilless vacuum pump etc., note
When weighing under 24 hours uninterrupted rotation, high temperature, oil-free lubrication conditions of work at a high speed, its thermostabilization dimensional performance is low, wear rate is inclined
Height, the in addition invention can not prepare large-size screw rod, gas easily be present by large scale PEEK parts made from injection moulding process
The problems such as line, filamentary silver, cracking, buckling deformation, inhomogeneous cooling, therefore large scale PEEK parts can not use injection moulding process to prepare.
The content of the invention
It is an object of the invention to overcome disadvantages mentioned above present in prior art, there is provided one kind is exclusively used in uninterrupted high speed
Under operating, high temperature, oil-free lubrication condition of work, thermostabilization dimensional performance is high, coefficient of friction is low, service life is long, light weight
Large scale is PEEK/TPI alloy screws；Meanwhile large scale PEEK/ is prepared by compression molding present invention also offers one kind
The method of TPI alloy screws.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, above-mentioned female screw and positive screw rod are PEEK/
TPI alloy materials, the PEEK/TPI alloy materials formula are in parts by mass：PEEK resin particle 70-90 mass parts, TPI
Powder 10-30 mass parts, molybdenum disulfide powder 5-15 mass parts, granularity are the carbon fiber 15-35 mass parts of the mesh of 50 mesh -300.
The method that above-mentioned large scale PEEK/TPI alloy screws are prepared by compression molding, is comprised the steps of：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, TPI is taken respectively
Powder and PEEK resin particles, elimination Electrostatic Treatment is done to TPI powder and PEEK resin particles, prevents material from reuniting, then at a high speed
It is mixed into compound；Compound is granulated by double screw extruder, wherein：The screw speed of double screw extruder is 100r/
Min, each phase temperature is respectively 100-120 DEG C at charge door, 340-350 DEG C of transportation section, 360-365 DEG C of melt zone, metering section
360-365 DEG C, 340-350 DEG C at machine head port mould；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy material powder that granularity is 200 mesh is made, matches somebody with somebody by alloy material
Mass fraction in side, molybdenum disulfide powder and granularity are added to PEEK/TPI alloy materials for the carbon fiber of the mesh of 50 mesh -300
In feed powder end, 5-15 minutes are mixed in high speed mixer, the temperature of high speed mixer is less than 60 DEG C during mixing；
3rd step, screw rod is prepared with the PEEK/TPI mixing materials compression moulding as made from second step：By mixing material made from second step
Material dries 4-6 hours at 150 DEG C, and inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 300-
400bar, heating and holding stage temperature are 380-400 DEG C, and heating and holding stage pressure are 20-30bar, cooling stage pressure
Power is 100-200bar；Compression moulding part is finished on lathe after the demoulding.
In the above-mentioned technical solutions, the size for finishing front screw compression moulding part can reach a diameter of 160-800mm, length is
288-1440mm。
In the above-mentioned technical solutions, TPI is the abbreviation of TPI, and TPI is sub- in traditional thermosetting polyamides
What is grown up on the basis of amine (abbreviation PI) has one of good special engineering plastics of thermoplastic processability, and it has excellent
Different heat resistance, superpower dimensional stability, excellent in mechanical performance, anticorrosive, antifatigue, damage tolerant, impact resistance, density is small,
The features such as noise is low, service life is long, and excellent high temperature performance.
In the above-mentioned technical solutions, molybdenum disulfide is good non-oil kollag, its high-low temperature resistant, coefficient of friction
It is low, to high temperature, low temperature, high load capacity, high rotating speed, there is equipment under the conditions of chemical attack and ultravacuum, there is excellent lubrication.
By molybdenum disulfide addition in PEEK/TPI alloy materials, the lubrication and antifriction quality of material can be improved, lubrication interval, drop can be extended
Low cost, improve working conditions, reduce the abrasion of plant equipment, extension device service life and maintenance period.
In the above-mentioned technical solutions, carbon fiber has the characteristic of general carbon materials, such as high temperature resistant, rub resistance and corrosion resistant
Erosion etc., its profile has significant anisotropy, softness, can be processed into various fabrics, is shown along fiber direction of principal axis very high strong
Degree, in light weight, tensile strength is high.
The beneficial effects of the invention are as follows：The large scale screw rod of the present invention is with special engineered material PEEK/TPI alloy material generations
For traditional metal material, molybdenum disulfide and carbon fiber are added, the screw compression part before the lathe finishing step of preparation, diameter
Up to 1000mm, length is much larger than PEEK moulding screw rods up to 1500mm, its size, and finished product screw rod has preferable self-lubricating
Property, thermostabilization dimensional performance is good, noise is low, tensile strength reaches 80-120 MPA, coefficient of friction as little as 0.15-0.18, abrasion
The rate order of magnitude reaches 10-7Mm3/（Nm）, more than the wear rate order of magnitude two orders of magnitude of decline of pure PEEK materials, this
The large scale PEEK/TPI alloy screws of invention are exclusively used in oilless (oil free) compressor or oilless vacuum pump etc., focus on 24 hours uninterrupted height
Fast rotation, high temperature, oil-free lubrication condition of work under, avoid the pollution to equipment and end product, it is green；In addition,
Due to PEEK mass be metal material 20% or so, screw rod light weight of the invention, equipment energy consumption can be greatly lowered, carry
Rise industrial economic benefit.
The method that large scale PEEK/TPI alloy screws are prepared using compression molding of the present invention, first prepares PEEK/TPI alloys
Material granule, TPI and PEEK capacity increasing modifying, which can be effectively improved the enhancing of PEEK fillers, causes toughness to reduce the negative effect brought
Should, the resilience of material is improved, the thermal dimensional stability of material is improved, filler is added simultaneously in PEEK/TPI alloy material particles
Compression molding, the wearability and self lubricity of alloy material screw rod are improved, reduces its coefficient of friction.
Embodiment
Embodiment 1
A kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, wherein：Female screw and positive screw rod are
PEEK/TPI alloy materials, the PEEK/TPI alloy material formulas are in parts by mass：The mass parts of PEEK resin particles 70, TPI
The mass parts of powder 30, the mass parts of molybdenum disulfide powder 5, granularity are the mass parts of carbon fiber 25 of 120 mesh.
The method that the large scale PEEK/TPI alloy screws as described in above-mentioned embodiment 1 are prepared by compression molding, by following
Step forms：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, 30 matter are taken respectively
Part TPI powder and 70 mass parts PEEK resin particles are measured, and elimination Electrostatic Treatment is done to TPI powder and PEEK resin particles, are prevented
Only material is reunited, then mixed at high speed is into compound；Compound is granulated by double screw extruder, wherein：Double screw extruder
Screw speed be 100r/min, each phase temperature is respectively 120 DEG C at charge door, 350 DEG C of transportation section, 365 DEG C of melt zone, meter
350 DEG C at 365 DEG C of section of amount, machine head port mould；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy material powder that granularity is 200 mesh is made, matches somebody with somebody by alloy material
Mass fraction in side, 5 mass parts molybdenum disulfide powders and 25 mass parts granularities are added to for the carbon fiber of 120 mesh
In PEEK/TPI alloy material powder, mixed 10 minutes in high speed mixer, the temperature of high speed mixer is less than 60 during mixing
℃；
3rd step, screw rod is prepared with the PEEK/TPI mixing materials compression moulding as made from second step：It will be mixed as made from second step
Material is dried 6 hours at 150 DEG C, and inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 350bar,
Heating and holding stage temperature are 400 DEG C, and heating and holding stage pressure are 20 bar, and cooling stage pressure is 150 bar；It is de-
Compression moulding part is finished on lathe after mould.
Above-described embodiment 1 can prepare a diameter of 160 ± 0.5mm before lathe finishing step, the mm of length 289 ± 1 screw rod
Compression moulding part.
Pass through the finished product screw rod obtained by above-described embodiment 1, tensile strength 103MPA, coefficient of friction 0.18, abrasion
The rate order of magnitude 10-7Mm3/（Nm）, disclosure satisfy that oilless (oil free) compressor running temperature be 80 DEG C, pressure 12.5bar, rotating speed be
1500-2500r/min working condition.
Embodiment 2
A kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, wherein：Female screw and positive screw rod are
PEEK/TPI alloy materials, the PEEK/TPI alloy material formulas are in parts by mass：The mass parts of PEEK resin particles 70, TPI
The mass parts of powder 30, the mass parts of molybdenum disulfide powder 15, granularity are the mass parts of carbon fiber 35 of 300 mesh.
The method that the large scale PEEK/TPI alloy screws as described in above-mentioned embodiment 2 are prepared by compression molding, by following
Step forms：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, 30 matter are taken respectively
Part TPI powder and 70 mass parts PEEK resin particles are measured, and elimination Electrostatic Treatment is done to TPI powder and PEEK resin particles, are prevented
Only material is reunited, then mixed at high speed is into compound；Compound is granulated by double screw extruder, wherein：Double screw extruder
Screw speed be 100r/min, each phase temperature is respectively 120 DEG C at charge door, 350 DEG C of transportation section, 365 DEG C of melt zone, meter
350 DEG C at 365 DEG C of section of amount, machine head port mould；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy material powder that granularity is 200 mesh is made, matches somebody with somebody by alloy material
Mass fraction in side, 15 mass parts molybdenum disulfide powders and 35 mass parts granularities are added to for the carbon fiber of 300 mesh
In PEEK/TPI alloy material powder, mixed 15 minutes in high speed mixer, the temperature of high speed mixer is less than 60 during mixing
℃；
3rd step, screw rod is prepared with the PEEK/TPI mixing materials compression moulding as made from second step：It will be mixed as made from second step
Material is dried 6 hours at 150 DEG C, and inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 360bar, is risen
Temperature and holding stage temperature are 400 DEG C, and heating and holding stage pressure are 30bar, and cooling stage pressure is 150 bar；The demoulding
Compression moulding part is finished on lathe afterwards.
Above-described embodiment 2 can prepare a diameter of 250 ± 0.5mm before lathe finishing step, 451 ± 1mm of length screw rod
Compression moulding part.
Pass through the finished product screw rod obtained by above-described embodiment 2, tensile strength 115MPA, coefficient of friction 0.15, abrasion
The rate order of magnitude 10-7Mm3/（Nm）, disclosure satisfy that oilless (oil free) compressor running temperature be 80 DEG C, pressure 12.5bar, rotating speed be
2000-4000r/min working condition.
Embodiment 3
A kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, wherein：Female screw and positive screw rod are
PEEK/TPI alloy materials, the PEEK/TPI alloy material formulas are in parts by mass：The mass parts of PEEK resin particles 80, TPI
The mass parts of powder 20, the mass parts of molybdenum disulfide powder 10, granularity are the mass parts of carbon fiber 15 of 50 mesh.
The method that the large scale PEEK/TPI alloy screws as described in above-mentioned embodiment 3 are prepared by compression molding, by following
Step forms：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, 80 matter are taken respectively
Part TPI powder and 20 mass parts PEEK resin particles are measured, and elimination Electrostatic Treatment is done to TPI powder and PEEK resin particles, are prevented
Only material is reunited, then mixed at high speed is into compound；Compound is granulated by double screw extruder, wherein：Double screw extruder
Screw speed be 100r/min, each phase temperature is respectively 110 DEG C at charge door, 345 DEG C of transportation section, 360 DEG C of melt zone, meter
345 DEG C at 360 DEG C of section of amount, machine head port mould；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy material powder that granularity is 200 mesh is made, matches somebody with somebody by alloy material
Mass fraction in side, 10 mass parts molybdenum disulfide powders and 15 mass parts granularities are added to for the carbon fiber of 50 mesh
In PEEK/TPI alloy material powder, mixed 5 minutes in high speed mixer, the temperature of high speed mixer is less than 60 during mixing
℃；
3rd step, screw rod is prepared with the PEEK/TPI mixing materials compression moulding as made from second step：It will be mixed as made from second step
Material is dried 5 hours at 150 DEG C, and inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 360bar, is risen
Temperature and holding stage temperature are 395 DEG C, and heating and holding stage pressure are 20 bar, and cooling stage pressure is 150bar；The demoulding
Compression moulding part is finished on lathe afterwards.
Above-described embodiment 3 can prepare a diameter of 400 ± 0.5mm before lathe finishing step, the mm of length 721 ± 1 screw rod
Compression moulding part.
Pass through the finished product screw rod obtained by above-described embodiment 3, tensile strength 98MPA, coefficient of friction 0.17, wear rate
The order of magnitude 10-7Mm3/（Nm）, disclosure satisfy that oilless (oil free) compressor running temperature be 80 DEG C, pressure 12.5bar, rotating speed be
1500-2500r/min working condition.
Embodiment 4
A kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, wherein：Female screw and positive screw rod are
PEEK/TPI alloy materials, the PEEK/TPI alloy material formulas are in parts by mass：The mass parts of PEEK resin particles 80, TPI
The mass parts of powder 20, the mass parts of molybdenum disulfide powder 10, granularity are the mass parts of carbon fiber 35 of 200 mesh.
The method that the large scale PEEK/TPI alloy screws as described in above-mentioned embodiment 4 are prepared by compression molding, by following
Step forms：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, 80 matter are taken respectively
Part TPI powder and 20 mass parts PEEK resin particles are measured, and elimination Electrostatic Treatment is done to TPI powder and PEEK resin particles, are prevented
Only material is reunited, then mixed at high speed is into compound；Compound is granulated by double screw extruder, wherein：Double screw extruder
Screw speed be 100r/min, each phase temperature is respectively 110 DEG C at charge door, 345 DEG C of transportation section, 360 DEG C of melt zone, meter
345 DEG C at 360 DEG C of section of amount, machine head port mould；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy material powder that granularity is 200 mesh is made, matches somebody with somebody by alloy material
Mass fraction in side, 10 mass parts molybdenum disulfide powders and 35 mass parts granularities are added to for the carbon fiber of 200 mesh
In PEEK/TPI alloy material powder, mixed 15 minutes in high speed mixer, the temperature of high speed mixer is less than 60 during mixing
℃；
3rd step, screw rod is prepared with the PEEK/TPI mixing materials compression moulding as made from second step：It will be mixed as made from second step
Material is dried 5 hours at 150 DEG C, and inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 360bar, is risen
Temperature and holding stage temperature are 400 DEG C, and heating and holding stage pressure are 25bar, and cooling stage pressure is 150 bar；The demoulding
Compression moulding part is finished on lathe afterwards.
Above-described embodiment 4 can prepare a diameter of 500 ± 0.5 mm before lathe finishing step, the mm of length 901 ± 1 spiral shell
Bar compression moulding part.
Pass through the finished product screw rod obtained by above-described embodiment 4, tensile strength 118MPA, coefficient of friction 0.16, abrasion
The rate order of magnitude 10-7Mm3/（Nm）, disclosure satisfy that oilless (oil free) compressor running temperature be 80 DEG C, pressure 12.5bar, rotating speed be
2000-3000r/min working condition.
Embodiment 5
A kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, wherein：Female screw and positive screw rod are
PEEK/TPI alloy materials, the PEEK/TPI alloy material formulas are in parts by mass：The mass parts of PEEK resin particles 90, TPI
The mass parts of powder 10, the mass parts of molybdenum disulfide powder 10, granularity are the mass parts of carbon fiber 25 of 300 mesh.
The method that the large scale PEEK/TPI alloy screws as described in above-mentioned embodiment 5 are prepared by compression molding, by following
Step forms：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, 90 matter are taken respectively
Part TPI powder and 10 amount part PEEK resin particles are measured, and elimination Electrostatic Treatment is done to TPI powder and PEEK resin particles, are prevented
Material is reunited, then mixed at high speed is into compound；Compound is granulated by double screw extruder, wherein：Double screw extruder
Screw speed is 100r/min, each phase temperature is respectively 100 DEG C at charge door, 340 DEG C of transportation section, 360 DEG C of melt zone, metering
340 DEG C at 360 DEG C of section, machine head port mould；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy material powder that granularity is 200 mesh is made, matches somebody with somebody by alloy material
Mass fraction in side, 10 mass parts molybdenum disulfide powders and 25 mass parts granularities are added to for the carbon fiber of 300 mesh
In PEEK/TPI alloy material powder, mixed 12 minutes in high speed mixer, the temperature of high speed mixer is less than 60 during mixing
℃；
3rd step, screw rod is prepared with the PEEK/TPI mixing materials compression moulding as made from second step：It will be mixed as made from second step
Material is dried 4 hours at 150 DEG C, and inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 350bar, is risen
Temperature and holding stage temperature are 400 DEG C, and heating and holding stage pressure are 30bar, and cooling stage pressure is 150bar；After the demoulding
Compression moulding part is finished on lathe.
Above-described embodiment 5 can prepare a diameter of 630 ± 0.5 mm before lathe finishing step, the mm of length 1135 ± 1 spiral shell
Bar compression moulding part.
Pass through the finished product screw rod obtained by above-described embodiment 5, tensile strength 107MPA, coefficient of friction 0.16, abrasion
The rate order of magnitude 10-7Mm3/（Nm）, disclosure satisfy that oilless (oil free) compressor running temperature be 80 DEG C, pressure 12.5bar, rotating speed be
2000-3000r/min working condition.
Embodiment 6
A kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, wherein：Female screw and positive screw rod are
PEEK/TPI alloy materials, the PEEK/TPI alloy material formulas are in parts by mass：The mass parts of PEEK resin particles 90, TPI
The mass parts of powder 10, the mass parts of molybdenum disulfide powder 10, granularity are the mass parts of carbon fiber 35 of 200 mesh.
The method that the large scale PEEK/TPI alloy screws as described in above-mentioned embodiment 6 are prepared by compression molding, by following
Step forms：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, 90 matter are taken respectively
Part TPI powder and 10 mass parts PEEK resin particles are measured, and elimination Electrostatic Treatment is done to TPI powder and PEEK resin particles, are prevented
Only material is reunited, then mixed at high speed is into compound；Compound is granulated by double screw extruder, wherein：Double screw extruder
Screw speed be 100r/min, each phase temperature is respectively 100 DEG C at charge door, 340 DEG C of transportation section, 360 DEG C of melt zone, meter
340 DEG C at 360 DEG C of section of amount, machine head port mould；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy material powder that granularity is 200 mesh is made, matches somebody with somebody by alloy material
Mass fraction in side, 10 mass parts molybdenum disulfide powders and 35 mass parts granularities are added to for the carbon fiber of 200 mesh
In PEEK/TPI alloy material powder, mixed 15 minutes in high speed mixer, the temperature of high speed mixer is less than 60 during mixing
℃；
3rd step, screw rod is prepared with the PEEK/TPI mixing materials compression moulding as made from second step：It will be mixed as made from second step
Material is dried 4 hours at 150 DEG C, and inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 360bar, is risen
Temperature and holding stage temperature are 390 DEG C, and heating and holding stage pressure are 25bar, and cooling stage pressure is 150bar；After the demoulding
Compression moulding part is finished on lathe.
Above-described embodiment 6 can prepare a diameter of 800 ± 0.5mm before lathe finishing step, 1441 ± 1mm of length screw rod
Compression moulding part.
By the finished product screw rod obtained by above-described embodiment 6, tensile strength is 115 MPA, coefficient of friction 0.16, abrasion
The rate order of magnitude 10-7Mm3/（Nm）, disclosure satisfy that oilless (oil free) compressor running temperature be 80 DEG C, pressure 12.5bar, rotating speed be
2000-4000r/min working condition.
Claims (2)
1. a kind of large scale PEEK/TPI alloy screws, including female screw and positive screw rod, it is characterised in that：The female screw and sun
Screw rod is PEEK/TPI alloy materials, and the PEEK/TPI alloy materials formula is in parts by mass：PEEK resin particles 70-
90 mass parts, TPI powder 10-30 mass parts, molybdenum disulfide powder 5-15 mass parts, granularity are the carbon fiber of the mesh of 50 mesh -300
15-35 mass parts.
2. a kind of method that compression molding prepares large scale PEEK/TPI alloy screws as claimed in claim 1, it is characterised in that
Comprise the steps of：
The first step, prepare PEEK/TPI alloy material particles：According to the mass fraction in being formulated in alloy material, TPI is taken respectively
Powder and PEEK resin particles, do elimination Electrostatic Treatment to TPI powder and PEEK resin particles, then mixed at high speed is into compound；
Compound is granulated by double screw extruder, wherein：The screw speed of double screw extruder is 100r/min, each phase temperature
100-120 DEG C respectively at charge door, 340-350 DEG C of transportation section, 360-365 DEG C of melt zone, 360-365 DEG C of metering section, head
340-350 DEG C at mouth mold；
Second step, grind PEEK/TPI alloy materials particle made from the first step and add auxiliary material：By PEEK/ made from the first step
TPI alloy material particles are ground, and the PEEK/TPI alloy powder materials that granularity is 200 mesh are made, match somebody with somebody by alloy material
Mass fraction in side, molybdenum disulfide powder and carbon fiber are added in PEEK/TPI alloy powder materials, in high speed batch mixing
5-15 minutes are mixed in machine, the temperature of high speed mixer is less than 60 DEG C during mixing；
3rd step, screw rod is prepared with the mixing material compression moulding as made from second step：By mixing material made from second step at 150 DEG C
Lower dry 4-6 hours, inserts compression molding is added on mould, wherein：Cold pressing staged pressure is 300-400bar, heating and
Holding stage temperature is 380-400 DEG C, and heating and holding stage pressure are 20-30bar, and cooling stage pressure is 100-
200bar；Compression moulding part is finished on lathe after the demoulding.
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| CN201711258840.8A CN107857970A (en) | 2017-12-04 | 2017-12-04 | A kind of large scale PEEK/TPI alloy screws and its compression molding preparation method |
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| CN109553921A (en) * | 2018-11-09 | 2019-04-02 | 苏州聚泰新材料有限公司 | A kind of thermally conductive wearing composite material having metallic luster |
| CN109880286A (en) * | 2019-02-28 | 2019-06-14 | 武汉材料保护研究所有限公司 | A kind of antifriction antiwear composite material and preparation method for kinematic pair of paddling |
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| CN101092988A (en) * | 2007-07-09 | 2007-12-26 | 南京工业大学 | Base thrust washer of thermoplastic polymer, and preparation method |
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| CN109553921A (en) * | 2018-11-09 | 2019-04-02 | 苏州聚泰新材料有限公司 | A kind of thermally conductive wearing composite material having metallic luster |
| CN109880286A (en) * | 2019-02-28 | 2019-06-14 | 武汉材料保护研究所有限公司 | A kind of antifriction antiwear composite material and preparation method for kinematic pair of paddling |
| CN109880286B (en) * | 2019-02-28 | 2021-09-03 | 武汉材料保护研究所有限公司 | Antifriction and antiwear composite material for wading kinematic pair and preparation method thereof |
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Application publication date: 20180330 |