CN115011050A - Polytetrafluoroethylene composite material and preparation method thereof - Google Patents
Polytetrafluoroethylene composite material and preparation method thereof Download PDFInfo
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- CN115011050A CN115011050A CN202210819820.8A CN202210819820A CN115011050A CN 115011050 A CN115011050 A CN 115011050A CN 202210819820 A CN202210819820 A CN 202210819820A CN 115011050 A CN115011050 A CN 115011050A
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- -1 Polytetrafluoroethylene Polymers 0.000 title claims abstract description 137
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 133
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 133
- 239000002131 composite material Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229920006389 polyphenyl polymer Polymers 0.000 claims abstract description 25
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005245 sintering Methods 0.000 claims abstract description 22
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 39
- 239000000843 powder Substances 0.000 claims description 28
- 150000002148 esters Chemical class 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 16
- 238000000498 ball milling Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000009775 high-speed stirring Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000007710 freezing Methods 0.000 claims description 7
- 230000008014 freezing Effects 0.000 claims description 7
- 239000011858 nanopowder Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- 238000004381 surface treatment Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000003760 magnetic stirring Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 229910001495 sodium tetrafluoroborate Inorganic materials 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 230000002195 synergetic effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 21
- 229910010271 silicon carbide Inorganic materials 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2244—Oxides; Hydroxides of metals of zirconium
-
- 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
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a polytetrafluoroethylene composite material and a preparation method thereof, relates to the technical field of composite materials, solves the problem that the application range of polytetrafluoroethylene is limited due to the lower wear resistance of the existing polytetrafluoroethylene, and comprises the following components in percentage by mass: 50 to 70 percent of polytetrafluoroethylene, 10 to 20 percent of nano SiC and 10 to 20 percent of polyphenyl ester5% -10% of MoS 2 2-3% of zirconium oxide; the preparation method comprises the following steps: mixing the raw materials in proportion, and then rolling and sintering to obtain the polytetrafluoroethylene composite material; the polytetrafluoroethylene is modified through the mutual synergistic effect of the raw materials, so that the effect of improving the wear resistance of the polytetrafluoroethylene is realized, the service life of the polytetrafluoroethylene is prolonged, the mechanical property of the polytetrafluoroethylene is enhanced, the application range of the polytetrafluoroethylene composite material is expanded, and the functionality of the polytetrafluoroethylene composite material is enhanced.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a polytetrafluoroethylene composite material and a preparation method thereof.
Background
The composite material is a material with new performance formed by two or more than two materials with different properties by a physical or chemical method on a macroscopic (microscopic) scale, and various materials mutually make up for each other in performance to generate a synergistic effect, so that the comprehensive performance of the composite material is superior to that of the original composition material to meet various different requirements, and the matrix material of the composite material is divided into two major types of metal and nonmetal; common metal substrates include aluminum, magnesium, copper, titanium and alloys thereof; the non-metal matrix mainly comprises synthetic resin, rubber, ceramic, graphite, carbon and the like; the reinforced material mainly comprises glass fiber, carbon fiber, boron fiber, aramid fiber, silicon carbide fiber, asbestos fiber, crystal whisker, metal wire, hard fine particles and the like.
Polytetrafluoroethylene, commonly known as "plastic king", is a high molecular compound polymerized from tetrafluoroethylene, has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-adhesiveness, electrical insulation property and good anti-aging endurance, can be used as engineering plastic to be made into polytetrafluoroethylene tubes, rods, belts, plates, films and the like, and is generally applied to corrosion-resistant pipelines, containers, pumps, valves, radar, high-frequency communication equipment, radio equipment and the like with higher performance requirements.
Although the polytetrafluoroethylene has more excellent performances, the polytetrafluoroethylene also has the defects that the friction coefficient is very small and is generally between 0.04 and 0.1 because the mutual attraction among polytetrafluoroethylene macromolecules is small and the attraction of the surface to other molecules is also small, and the application range of the polytetrafluoroethylene is limited to a certain extent by the defects.
Disclosure of Invention
The invention aims to solve the problem that the application range of polytetrafluoroethylene is limited due to low wear resistance of the existing polytetrafluoroethylene, and provides a polytetrafluoroethylene composite material and a preparation method thereof in order to solve the technical problem.
The invention specifically adopts the following technical scheme for realizing the purpose:
the polytetrafluoroethylene composite material comprises the following components in percentage by mass: 50 to 70 percent of polytetrafluoroethylene, 10 to 20 percent of nano SiC, 10 to 20 percent of polyphenyl ester and 5 to 10 percent of MoS 2 2 to 3 percent of zirconium oxide.
Further, by mass percent, 55 to 65 percent of polytetrafluoroethylene, 12 to 16 percent of nano SiC, 12 to 16 percent of polyphenyl ester and 6 to 9 percent of MoS 2 2 to 3 percent of zirconium oxide.
Further, the paint comprises the following components in percentage by mass: 60% of polytetrafluoroethylene, 15% of nano SiC, 15% of polyphenyl ester and 7.5% of MoS 2 And 2.5% of zirconium oxide.
By adding nano SiC and MoS 2 Can play a good role in supporting load and simultaneously add MoS 2 The polyphenyl ester is an aromatic polyester heat-resistant polymer, the polymer with high crystallinity is prepared by taking p-hydroxybenzoic acid as a basic raw material, the polyphenyl ester is compounded with the polytetrafluoroethylene, the compression, bending and abrasion performance of the polytetrafluoroethylene are improved, macromolecular chains can be adsorbed on the surfaces of the polyphenyl ester, the macromolecular chains are mutually entangled, particles adsorbing the macromolecular chains can play a role in uniformly distributing load, and when one macromolecular chain receives stress, the crosslinked particles can be used for uniformly distributing loadForce is distributed on each molecular chain, so that stress is uniformly distributed, and the composition not only can enhance the wear resistance, but also can improve the mechanical property; the added zirconium oxide and SiC form a synergistic effect, so that the large-area damage of the polytetrafluoroethylene band-shaped structure is effectively prevented, the wear form is changed from adhesion-tearing wear to shearing wear, and the wear resistance of the modified polytetrafluoroethylene is further enhanced.
The application uses nano SiC, polyphenyl ester and MoS 2 The zirconium oxide modifies the polytetrafluoroethylene by the mutual synergistic effect, so that the effect of improving the wear resistance of the polytetrafluoroethylene is realized, the service life of the polytetrafluoroethylene is prolonged, the mechanical property of the polytetrafluoroethylene is enhanced, the application range of the polytetrafluoroethylene composite material is expanded, and the functionality of the polytetrafluoroethylene composite material is enhanced.
Further, the polytetrafluoroethylene is polytetrafluoroethylene obtained after surface treatment.
Further, the specific treatment method of the polytetrafluoroethylene comprises the following steps: firstly, polishing the surface of polytetrafluoroethylene by using abrasive paper, then cleaning by using acetone, then placing in a furnace for drying, inserting a Pt electrode into the surface of the polytetrafluoroethylene, and locally reducing the surface of a sample to carbonize the sample; and finally, placing the sample in sodium tetrafluoroborate dielectric medium for reaction under the atmosphere of inert gas, and then magnetically stirring in methanol solution.
The surface treatment method can destroy C-F bonds of the polytetrafluoroethylene, tear off partial fluorine atoms on the surface, leave a carbonized layer on the surface and introduce certain polar groups, and the polar groups enable the surface energy of the polymer to be increased, the contact angle to be reduced and the wettability to be improved, so that the polytetrafluoroethylene is changed from difficult adhesion to adhesive.
Further, the drying temperature of the furnace is controlled to be 90-95 ℃; the depth of the Pt electrode inserted into the surface of the polytetrafluoroethylene is 5-8 mu m; the magnetic stirring time is controlled to be 9-10 hours.
Further, the dielectric is tetrafluoroborate.
In order to achieve the above purpose, the present application also provides a preparation method of a polytetrafluoroethylene composite material, which specifically comprises the following steps:
step 1: putting the polytetrafluoroethylene micro powder into a refrigerator for freezing, taking out the polytetrafluoroethylene micro powder, putting the polytetrafluoroethylene micro powder into ball milling equipment for ball milling to form nano powder, and then proportionally mixing the nano SiC, the polyphenyl ester and the MoS 2 Adding zirconium oxide into polytetrafluoroethylene powder and uniformly stirring to obtain a mixed material;
step 2: pressing the mixed material after high-speed stirring to obtain a pressed material;
and step 3: and sintering the pressed material to obtain the polytetrafluoroethylene composite material.
Furthermore, the high-speed stirring time in the step 2 is 30 minutes, and the stirring rotating speed is 2000 r/min.
Further, the sintering method in step 3 is as follows: and (3) placing the pressed material into a sintering box, heating to 350 ℃ at the speed of 10 ℃/min, then preserving heat for 30min, heating to 400 ℃ at the speed of 5 ℃/min, preserving heat for 1.5h, then cooling to 350 ℃ at the speed of 5 ℃/min, preserving heat for 20min, and then cooling to room temperature at the speed of 25 ℃/min to obtain the polytetrafluoroethylene composite material.
The invention has simple production process and lower production cost, simultaneously, the added SiC can not only improve the dimensional thermal stability, the mechanical property and the wear resistance of the polytetrafluoroethylene, but also improve the heat resistance and the creep resistance of the polytetrafluoroethylene composite material, and can reduce the thermal expansion coefficient, and the conditions in the whole process are convenient to control.
The invention has the following beneficial effects:
(1) the application uses nano SiC, polyphenyl ester and MoS 2 The zirconium oxide modifies the polytetrafluoroethylene by the mutual synergistic effect, thereby not only realizing the effect of improving the wear resistance of the polytetrafluoroethylene, extending the service life of the polytetrafluoroethylene, but also enhancing the mechanical property of the polytetrafluoroethylene and expanding the service life of the polytetrafluoroethyleneThe application range of the polytetrafluoroethylene composite material is widened, and the functionality of the polytetrafluoroethylene composite material is enhanced;
(2) the surface treatment method can destroy C-F bonds of the polytetrafluoroethylene, tear off partial fluorine atoms on the surface, leave a carbonized layer on the surface and introduce certain polar groups, and the polar groups enable the surface energy of the polymer to be increased, the contact angle to be reduced and the wettability to be improved, so that the polytetrafluoroethylene is changed from difficult adhesion to adhesive;
(3) the invention has simple production process and lower production cost, simultaneously, the added SiC can not only improve the dimensional thermal stability, the mechanical property and the wear resistance of the polytetrafluoroethylene, but also improve the heat resistance and the creep resistance of the polytetrafluoroethylene composite material, and can reduce the thermal expansion coefficient, and the conditions in the whole process are convenient to control.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments.
Thus, the detailed description of the embodiments of the present invention provided below 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1
The polytetrafluoroethylene composite material in the embodiment comprises the following components in percentage by mass: 50% of polytetrafluoroethylene, 20% of nano SiC, 20% of polyphenyl ester and 7% of MoS 2 3% of zirconium oxide.
The preparation method specifically comprises the following steps:
step 1: putting the polytetrafluoroethylene micro powder into a refrigerator for freezing, taking out the polytetrafluoroethylene micro powder, putting the polytetrafluoroethylene micro powder into ball milling equipment for ball milling to form nano powder, and then proportionally mixing the nano SiC, the polyphenyl ester and the MoS 2 Adding zirconium oxide into polytetrafluoroethylene powder and uniformly stirring to obtain a mixed material;
step 2: pressing the mixed material after high-speed stirring to obtain a pressed material; wherein the high-speed stirring time is 30 minutes, and the stirring rotating speed is 2000 r/min;
and step 3: sintering the pressed material to obtain the polytetrafluoroethylene composite material; the sintering method comprises the following steps: and (3) placing the pressed material into a sintering box, heating to 350 ℃ at the speed of 10 ℃/min, then preserving heat for 30min, heating to 400 ℃ at the speed of 5 ℃/min, preserving heat for 1.5h, then cooling to 350 ℃ at the speed of 5 ℃/min, preserving heat for 20min, and then cooling to room temperature at the speed of 25 ℃/min to obtain the polytetrafluoroethylene composite material.
Example 2
The polytetrafluoroethylene composite material in the embodiment comprises the following components in percentage by mass: 70 percent of polytetrafluoroethylene, 10 percent of nano SiC, 10 percent of polyphenyl ester and 8 percent of MoS 2 And 2% of zirconium oxide.
The preparation method specifically comprises the following steps:
step 1: putting the polytetrafluoroethylene micro powder into a refrigerator for freezing, taking out the polytetrafluoroethylene micro powder, putting the polytetrafluoroethylene micro powder into ball milling equipment for ball milling to form nano powder, and then proportionally mixing the nano SiC, the polyphenyl ester and the MoS 2 Adding zirconium oxide into polytetrafluoroethylene powder and uniformly stirring to obtain a mixed material;
step 2: pressing the mixed material after high-speed stirring to obtain a pressed material; wherein the high-speed stirring time is 30 minutes, and the stirring rotating speed is 2000 r/min;
and step 3: sintering the pressed material to obtain the polytetrafluoroethylene composite material; the sintering method comprises the following steps: and (3) placing the pressed material into a sintering box, heating to 350 ℃ at the speed of 10 ℃/min, then preserving heat for 30min, heating to 400 ℃ at the speed of 5 ℃/min, preserving heat for 1.5h, then cooling to 350 ℃ at the speed of 5 ℃/min, preserving heat for 20min, and then cooling to room temperature at the speed of 25 ℃/min to obtain the polytetrafluoroethylene composite material.
Example 3
The polytetrafluoroethylene composite material in the example comprises, by mass, 55% of polytetrafluoroethylene, 16% of nano SiC, 18% of polyphenyl ester and 9% of MoS 2 And 2% of zirconium oxide.
The preparation method specifically comprises the following steps:
step 1: putting the polytetrafluoroethylene micro powder into a refrigerator for freezing, taking out the polytetrafluoroethylene micro powder, putting the polytetrafluoroethylene micro powder into ball milling equipment for ball milling to form nano powder, and then proportionally mixing the nano SiC, the polyphenyl ester and the MoS 2 Adding zirconium oxide into polytetrafluoroethylene powder and uniformly stirring to obtain a mixed material;
step 2: pressing the mixed material after high-speed stirring to obtain a pressed material; wherein the high-speed stirring time is 30 minutes, and the stirring rotating speed is 2000 r/min;
and step 3: sintering the pressed material to obtain the polytetrafluoroethylene composite material; the sintering method comprises the following steps: and (3) placing the pressed material into a sintering box, heating to 350 ℃ at the speed of 10 ℃/min, then preserving heat for 30min, heating to 400 ℃ at the speed of 5 ℃/min, preserving heat for 1.5h, then cooling to 350 ℃ at the speed of 5 ℃/min, preserving heat for 20min, and then cooling to room temperature at the speed of 25 ℃/min to obtain the polytetrafluoroethylene composite material.
Example 4
The polytetrafluoroethylene composite material in the example comprises, by mass, 65% of polytetrafluoroethylene, 12% of nano SiC, 12% of polyphenyl ester and 9% of MoS 2 And 2% of zirconium oxide.
The preparation method specifically comprises the following steps:
step 1: putting the polytetrafluoroethylene micro powder into a refrigerator for freezing, taking out the polytetrafluoroethylene micro powder, putting the polytetrafluoroethylene micro powder into ball milling equipment for ball milling to form nano powder, and then proportionally mixing the nano SiC, the polyphenyl ester and the MoS 2 Adding zirconium oxide into polytetrafluoroethylene powder and uniformly stirring to obtain a mixed material;
and 2, step: pressing the mixed material after high-speed stirring to obtain a pressed material; wherein the high-speed stirring time is 30 minutes, and the stirring rotating speed is 2000 r/min;
and step 3: sintering the pressed material to obtain the polytetrafluoroethylene composite material; the sintering method comprises the following steps: and (3) placing the pressed material into a sintering box, heating to 350 ℃ at the speed of 10 ℃/min, then preserving heat for 30min, heating to 400 ℃ at the speed of 5 ℃/min, preserving heat for 1.5h, then cooling to 350 ℃ at the speed of 5 ℃/min, preserving heat for 20min, and then cooling to room temperature at the speed of 25 ℃/min to obtain the polytetrafluoroethylene composite material.
Example 5
The polytetrafluoroethylene composite material in the embodiment comprises the following components in percentage by mass: 60% of polytetrafluoroethylene, 15% of nano SiC, 15% of polyphenyl ester and 7.5% of MoS 2 And 2.5% of zirconium oxide.
The preparation method specifically comprises the following steps:
step 1: putting the polytetrafluoroethylene micro powder into a refrigerator for freezing, taking out the polytetrafluoroethylene micro powder, putting the polytetrafluoroethylene micro powder into ball milling equipment for ball milling to form nano powder, and then proportionally mixing the nano SiC, the polyphenyl ester and the MoS 2 Adding zirconium oxide into polytetrafluoroethylene powder and uniformly stirring to obtain a mixed material;
step 2: pressing the mixed material after high-speed stirring to obtain a pressed material; wherein the high-speed stirring time is 30 minutes, and the stirring speed is 2000 r/min;
and step 3: sintering the pressed material to obtain the polytetrafluoroethylene composite material; the sintering method comprises the following steps: and (3) placing the pressed material into a sintering box, heating to 350 ℃ at the speed of 10 ℃/min, then preserving heat for 30min, heating to 400 ℃ at the speed of 5 ℃/min, preserving heat for 1.5h, then cooling to 350 ℃ at the speed of 5 ℃/min, preserving heat for 20min, and then cooling to room temperature at the speed of 25 ℃/min to obtain the polytetrafluoroethylene composite material.
Comparative example 1
The difference from example 1 is that no nano-SiC is contained.
Comparative example 2
And implementation ofExample 1 differs in not containing MoS 2 。
Comparative example 3
The difference from example 1 is that no polyphenyl ester is present.
Comparative example 4
The difference from example 1 is that no zirconia is present.
The abrasion resistance of the polytetrafluoroethylene composites prepared in examples 1 to 5 and comparative examples 1 to 3 was examined, wherein the friction coefficient, abrasion and wear scar width were measured according to the relevant regulations in GB/T3960-1989 test method for sliding friction and abrasion of plastics. The results of the measurements are shown in the following table.
| Examples/comparative examples | Coefficient of friction | Grinding crack width (mum) |
| Example 1 | 0.07 | 438.23 |
| Example 2 | 0.09 | 435.19 |
| Example 3 | 0.08 | 441.25 |
| Example 4 | 0.11 | 439.76 |
| Example 5 | 0.10 | 440.12 |
| Comparative example 1 | 0.20 | 580.06 |
| Comparative example 2 | 0.18 | 579.45 |
| Comparative example 3 | 0.19 | 596.3 |
| Comparative example 4 | 0.18 | 578.5 |
According to the detection data, the wear resistance of the polytetrafluoroethylene composite material prepared by the technical scheme is greatly improved, and meanwhile, the components of the raw materials have synergistic promotion effects, so that the wear resistance of the prepared polytetrafluoroethylene composite material is reduced due to the lack of any component.
Claims (10)
1. The polytetrafluoroethylene composite material is characterized by comprising the following components in percentage by mass: 50 to 70 percent of polytetrafluoroethylene, 10 to 20 percent of nano SiC, 10 to 20 percent of polyphenyl ester and 5 to 10 percent of MoS 2 2 to 3 percent of zirconium oxide.
2. The polytetrafluoroethylene composite material according to claim 1, wherein the polytetrafluoroethylene composite material is 55% by mass65 percent of polytetrafluoroethylene, 12 to 16 percent of nano SiC, 12 to 18 percent of polyphenyl ester and 6 to 9 percent of MoS 2 2 to 3 percent of zirconium oxide.
3. The polytetrafluoroethylene composite material as set forth in claim 1, comprising the following components in percentage by mass: 60% of polytetrafluoroethylene, 15% of nano SiC, 15% of polyphenyl ester and 7.5% of MoS 2 And 2.5% of zirconium oxide.
4. The polytetrafluoroethylene composite according to any one of claims 1 to 3, wherein the polytetrafluoroethylene is polytetrafluoroethylene obtained by surface treatment.
5. The polytetrafluoroethylene composite material as set forth in claim 4, wherein the specific processing method of polytetrafluoroethylene is: firstly, polishing the surface of polytetrafluoroethylene by using abrasive paper, then cleaning by using acetone, then placing in a furnace for drying, inserting a Pt electrode into the surface of the polytetrafluoroethylene, and locally reducing the surface of a sample to carbonize the sample; and finally, placing the sample in sodium tetrafluoroborate dielectric medium for reaction under the atmosphere of inert gas, and then magnetically stirring in methanol solution.
6. A polytetrafluoroethylene composite material according to claim 5, wherein the temperature of oven drying is controlled to 90-95 ℃; the depth of the Pt electrode inserted into the surface of the polytetrafluoroethylene is 5-8 mu m; the magnetic stirring time is controlled to be 9-10 hours.
7. A polytetrafluoroethylene composite according to claim 5 wherein the dielectric is tetrafluoroborate.
8. A preparation method of the polytetrafluoroethylene composite material as set forth in any one of claims 1-3, comprising the following steps:
step 1: putting the polytetrafluoroethylene micro powder into a refrigerator for freezing, taking out the polytetrafluoroethylene micro powder, putting the polytetrafluoroethylene micro powder into ball milling equipment for ball milling to form nano powder, and then proportionally mixing the nano SiC, the polyphenyl ester and the MoS 2 Adding zirconium oxide into polytetrafluoroethylene powder and uniformly stirring to obtain a mixed material;
step 2: pressing the mixed material after high-speed stirring to obtain a pressed material;
and step 3: and sintering the pressed material to obtain the polytetrafluoroethylene composite material.
9. A preparation method of polytetrafluoroethylene composite according to claim 8, wherein the stirring speed in step 2 is 2000r/min for 30 minutes.
10. A preparation method of polytetrafluoroethylene composite according to claim 8, wherein the sintering method in step 3 is as follows: and (3) placing the pressed material into a sintering box, heating to 350 ℃ at the speed of 10 ℃/min, then preserving heat for 30min, heating to 400 ℃ at the speed of 5 ℃/min, preserving heat for 1.5h, then cooling to 350 ℃ at the speed of 5 ℃/min, preserving heat for 20min, and then cooling to room temperature at the speed of 25 ℃/min to obtain the polytetrafluoroethylene composite material.
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| CN101696311A (en) * | 2009-10-22 | 2010-04-21 | 洛阳轴研科技股份有限公司 | Bearing retainer material and preparation method thereof |
| CN105387078A (en) * | 2015-12-11 | 2016-03-09 | 浙江大学 | Composite material for rolling bearings and application of composite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101696311A (en) * | 2009-10-22 | 2010-04-21 | 洛阳轴研科技股份有限公司 | Bearing retainer material and preparation method thereof |
| CN105387078A (en) * | 2015-12-11 | 2016-03-09 | 浙江大学 | Composite material for rolling bearings and application of composite material |
Non-Patent Citations (1)
| Title |
|---|
| "聚四氟乙烯的六大表面改性技术", 人人文库网 * |
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