CN106566160A - Preparation method of polytetrafluoroethylene sheet for automobiles - Google Patents
Preparation method of polytetrafluoroethylene sheet for automobiles Download PDFInfo
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- CN106566160A CN106566160A CN201610981629.8A CN201610981629A CN106566160A CN 106566160 A CN106566160 A CN 106566160A CN 201610981629 A CN201610981629 A CN 201610981629A CN 106566160 A CN106566160 A CN 106566160A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
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- C09K3/14—Anti-slip materials; Abrasives
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a preparation method of a polytetrafluoroethylene sheet for automobiles. The preparation method includes the steps that a carbon nanotube is subjected to acidification so that an acidified carbon nanotube can be obtained; acryloyl chloride reacts with the acidified carbon nanotube so that a modified carbon nanotube can be obtained; polytetrafluoroethylene micro powder is subjected to argon plasma treatment, and is added into a dimethylformamide solution of glycidyl methacrylate and the modified carbon nanotube, and after a reaction, modified polytetrafluoroethylene micro powder is obtained; samarium oxide, molybdenum disulfide, aluminum trioxide, calcium carbonate, silicon carbide, zirconium oxide, wollastonite, ferroferric oxide, copper sulfide and copper fluoride are added in acetone, hexadecyl trimethyl ammonium bromide, polyethylene glycol and a silane coupling agent are added, a stirring reaction is performed, and a modified filler is obtained; and aramid fibers, glass fibers, zinc dialkyl dithiophosphate and the modified filler are mixed uniformly, and after the modified polytetrafluoroethylene micro powder, polyacrylonitrile, epoxy resin, polyether ether ketone, polyformaldehyde and polyimide are added and stirred uniformly, the polytetrafluoroethylene sheet is obtained by means of cold pressing forming and sintering.
Description
Technical field
The present invention relates to polytetrafluoroethylene (PTFE) technical field, more particularly to a kind of preparation of gasoline envelope teflon plate
Method.
Background technology
In the rotary motion type sealing device of plant equipment, oil sealing is extremely widely applied, to prevent work to be situated between
The leakage of matter and prevent dust, moisture and air etc. invade work internal body.The common used material of oil sealing before 100 years by using
Leather, asbestos fibre, it is the synthetic rubber finally applied, such as nitrile rubber, fluorubber, silicon rubber, ACM, poly-
Urethane, chlorohydrin rubber etc..Polytetrafluoroethylene (PTFE) be a kind of high-low temperature resistant, strong acid-base resistance corrosion and weatherability material, its performance phase
More more excellent than rubber, use range is wider, and oil sealing field is widely used at present.But there is mechanical strength in polytetrafluoroethylene (PTFE)
Low, wearability and heat endurance difference defect, existing polytetrafluoroethyloil oil seals material exist during use low intensity,
Wear no resistance, the defect that heat resistance is less desirable, limit its application.
The content of the invention
Based on the technical problem that background technology is present, the present invention proposes the system that a kind of gasoline seals teflon plate
Preparation Method, its step is simple, mild condition, and the gasoline envelope teflon plate for obtaining has intensity height, good toughness, wear-resisting
Excellent performance, thermal coefficient of expansion are little, heat resistance and the characteristics of excellent oil resistance, and the use that can meet automobile oil seal field will
Ask.
A kind of gasoline proposed by the present invention seals the preparation method of teflon plate, comprises the following steps：
S1, by CNT acidifying obtain be acidified CNT；Acryloyl chloride is added in dioxane, idol is subsequently adding
The dioxane solution of nitrogen bis-isobutyronitrile, is passed through nitrogen, stirring reaction 30-45h at 65-75 DEG C, is subsequently adding acidifying carbon and receives
Mitron, adjust temperature be 65-75 DEG C after under the protection of nitrogen stirring reaction 30-45h, reaction terminate rear suction filtration, washing, drying
Obtain modified carbon nano-tube；Ptfe micropowder is carried out into argon plasma process, Glycidyl methacrylate is subsequently adding sweet
In the dimethyl formamide solution of grease and modified carbon nano-tube, 25-30h is reacted at 85-95 DEG C, Jing is cleaned after reaction terminates
Obtain modified Teflon micro mist；
S2, by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide,
Copper sulfide, copper fluoride are added in acetone, are subsequently adding cetyl trimethylammonium bromide, polyethylene glycol and silane coupler, are adjusted
The pH value of section system be 5-6 after at 60-75 DEG C stirring reaction 2-5h, reaction terminate after Jing filter, be dried to obtain modified filler；
S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate and modified filler are well mixed, are subsequently adding
Modified Teflon micro mist, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde and polyimides are uniformly mixing to obtain mixed
Material；
S4, by batch mixing cold moudling, it is then sintered to obtain the gasoline envelope teflon plate.
Preferably, in S1, acryloyl chloride is 10-20 with the weight ratio of acidifying CNT：1-2.
Preferably, in S1, when argon plasma process is carried out, discharge gas pressure is 20-45Pa, and discharge power is
50-70W, discharge time is 3-8min.
Preferably, in S1, ptfe micropowder, GMA, the weight of modified carbon nano-tube
Than for 6-15：1-2：1-3.
Preferably, in S2, samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, four
Fe 3 O, copper sulfide, copper fluoride, cetyl trimethylammonium bromide, polyethylene glycol, the weight ratio of silane coupler are 5-
10：3-12：1-5：2-10：3-10：2-12：1-5：2-11：3-15：2-10：3-10：1-2：1-2.
Preferably, in S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate, modified filler, modified poly- four
PVF micro mist, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde, the weight ratio of polyimides are 2-10：2-10：1-5：
15-25：60-70：3-15：2-15：2-15：2-10：3-15.
Preferably, in S4, during cold moudling, the pressure colded pressing is 42-48MPa, and the time colded pressing is 45-
55min。
Preferably, in S4, the concrete technology of sintering is：With the heating rate of 11-23 DEG C/h by temperature from room temperature
To 65-75 DEG C, 140-160 DEG C of insulation 2-3h is warming up to the heating rate of 140-180 DEG C/h, with the intensification speed of 20-40 DEG C/h
Rate is warming up to 220-250 DEG C of insulation 2-3h, and with the heating rate of 220-280 DEG C/h 350-370 DEG C of insulation 4-6h is warming up to, with
The rate of temperature fall of 35-50 DEG C/h is cooled to 220-250 DEG C, is incubated 0.5-1.5h, is cooled to the rate of temperature fall of 30-55 DEG C/h
140-160 DEG C of insulation 2-4h, with the rate of temperature fall of 35-45 DEG C/h room temperature is cooled to；In sintering process, according to polytetrafluoroethylene (PTFE)
The property of each raw material of piece, to temperature and time steps control has been carried out, and have passed through the intensification and cooling in 7 stages, is prevented
The slight metamorphosis of semi-finished product, reduces the impact brought because of Volume Changes in sintering process, makes being optimal property of product
Energy.
In the preparation method of gasoline envelope teflon plate of the present invention, first, CNT is acidified
CNT, afterwards reacts acidifying CNT with acryloyl chloride, by the condition of control reaction, makes acryloyl chloride with acidifying
The hydroxyl of carbon nano tube surface there occurs reaction, so as to double bond to be incorporated into the surface of acidifying CNT；By polytetrafluoroethyl-ne
The process of alkene micro mist Jing argon plasmas, the high-energy particle bombardment ptfe micropowder during process, in plasma
Energy transmission is produced during surface, during bond energy of its energy more than C-F, C-F keys are opened, and are generated on ptfe micropowder surface
Oxygen in substantial amounts of free radical, with air there occurs reaction, and on the surface of ptfe micropowder peroxide or hydroxyl are introduced
Base peroxide, so as to the surface in ptfe micropowder introduces polar group, with GMA and
After modified carbon nano-tube mixing, it can produce oxygen radical, with GMA and modified carbon nano-tube
The double bond containing alkene on surface there occurs glycerol polymerization, so as to epoxide group and CNT have been incorporated into into ptfe micropowder
Surface, has obtained modified Teflon micro mist；Afterwards by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, oxygen
Change zirconium, wollastonite, ferroso-ferric oxide, copper sulfide, copper fluoride and employ cetyl trimethylammonium bromide, polyethylene glycol and silane
Coupling agent has carried out being modified and has obtained modified filler, improves the surface nature of each filler, improves its dispersion in system
Property；Afterwards with modified Teflon micro mist as major ingredient, while adding polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde
Coordinate with polyimides and modified Teflon micro mist, give the excellent intensity of product, heat endurance and wearability；Add simultaneously
Zinc dialkyl dithiophosphate is entered, it greatly reduces the friction factor of material, and aramid fiber, glass fibre and modified has filled out
Material cooperation serves excellent wear-resistant effect；In addition, in modified filler, with samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate,
Carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide, copper sulfide, copper fluoride be raw material, by control samarium oxide, molybdenum bisuphide,
Alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide, copper sulfide, the ratio of copper fluoride, make each material
Performance cooperateed with, excellent lubrication is served in addition system and the effect of fiber attrition is prevented, significantly improve material
Mechanical property and friction and wear behavior.
Teflon plate progressive prepared by the preparation method of teflon plate is sealed to gasoline of the present invention
Can detect, its hardness is 56.3-57.5HRL, and compressive strength is 25.3-26.5MPa, and impact strength is 23-24.5kJ/m2, break
It is 205-230% to split elongation, and tensile strength is 36-36.5MPa, and coefficient of friction is 0.1780-0.1790, and wear rate is
0.1050-0.1065×10-6cm3/N.m。
Specific embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of gasoline proposed by the present invention seals the preparation method of teflon plate, comprises the following steps：
S1, by CNT acidifying obtain be acidified CNT；Acryloyl chloride is added in dioxane, idol is subsequently adding
The dioxane solution of nitrogen bis-isobutyronitrile, is passed through nitrogen, stirring reaction 30h at 75 DEG C, is subsequently adding acidifying CNT, adjusts
Section temperature be after 75 DEG C under the protection of nitrogen stirring reaction 30h, reaction terminates rear suction filtration, washs, is dried to obtain carbon modified and receives
Mitron；Ptfe micropowder is carried out into argon plasma process, GMA and carbon modified is subsequently adding
In the dimethyl formamide solution of nanotube, 25h is reacted at 95 DEG C, Jing cleanings after reaction terminates obtain modified Teflon
Micro mist；
S2, by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide,
Copper sulfide, copper fluoride are added in acetone, are subsequently adding cetyl trimethylammonium bromide, polyethylene glycol and silane coupler, are adjusted
The pH value of section system be 5 after at 75 DEG C stirring reaction 2h, reaction terminate after Jing filter, be dried to obtain modified filler；
S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate and modified filler are well mixed, are subsequently adding
Modified Teflon micro mist, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde and polyimides are uniformly mixing to obtain mixed
Material；
S4, by batch mixing cold moudling, it is then sintered to obtain the gasoline envelope teflon plate.
Embodiment 2
A kind of gasoline proposed by the present invention seals the preparation method of teflon plate, comprises the following steps：
S1, by CNT acidifying obtain be acidified CNT；Acryloyl chloride is added in dioxane, idol is subsequently adding
The dioxane solution of nitrogen bis-isobutyronitrile, is passed through nitrogen, stirring reaction 45h at 65 DEG C, is subsequently adding acidifying CNT, adjusts
Section temperature be after 65 DEG C under the protection of nitrogen stirring reaction 45h, reaction terminates rear suction filtration, washs, is dried to obtain carbon modified and receives
Mitron；Ptfe micropowder is carried out into argon plasma process, GMA and carbon modified is subsequently adding
In the dimethyl formamide solution of nanotube, 30h is reacted at 85 DEG C, Jing cleanings after reaction terminates obtain modified Teflon
Micro mist；
S2, by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide,
Copper sulfide, copper fluoride are added in acetone, are subsequently adding cetyl trimethylammonium bromide, polyethylene glycol and silane coupler, are adjusted
The pH value of section system be 6 after at 60 DEG C stirring reaction 5h, reaction terminate after Jing filter, be dried to obtain modified filler；
S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate and modified filler are well mixed, are subsequently adding
Modified Teflon micro mist, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde and polyimides are uniformly mixing to obtain mixed
Material；
S4, by batch mixing cold moudling, it is then sintered to obtain the gasoline envelope teflon plate.
Embodiment 3
A kind of gasoline proposed by the present invention seals the preparation method of teflon plate, comprises the following steps：
S1, by CNT acidifying obtain be acidified CNT；Acryloyl chloride is added in dioxane, idol is subsequently adding
The dioxane solution of nitrogen bis-isobutyronitrile, is passed through nitrogen, stirring reaction 36h at 72 DEG C, is subsequently adding acidifying CNT, its
In, acryloyl chloride is 20 with the weight ratio of acidifying CNT：1, it is to stir anti-under the protection of nitrogen after 73 DEG C to adjust temperature
37h, reaction is answered to terminate rear suction filtration, wash, be dried to obtain modified carbon nano-tube；Ptfe micropowder is carried out into argon plasma
Process, wherein, when carrying out argon plasma and processing, discharge gas pressure is 45Pa, and discharge power is 50W, and discharge time is
8min, in being subsequently adding the dimethyl formamide solution of GMA and modified carbon nano-tube, wherein, poly- four
PVF micro mist, GMA, the weight ratio of modified carbon nano-tube are 6：2：1,26h is reacted at 93 DEG C,
Jing cleanings after reaction terminates obtain modified Teflon micro mist；
S2, by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide,
Copper sulfide, copper fluoride are added in acetone, are subsequently adding cetyl trimethylammonium bromide, polyethylene glycol and silane coupler, its
In, samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide, copper sulfide, fluorine
It is 5 to change copper, cetyl trimethylammonium bromide, polyethylene glycol, the weight ratio of silane coupler：12：1：10：3：12：1：11：3：
10：3：2：1, the pH value of regulation system be after 5 at 72 DEG C stirring reaction 3h, reaction terminate after Jing filter, be dried to obtain it is modified
Filler；
S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate and modified filler are well mixed, are subsequently adding
Modified Teflon micro mist, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde and polyimides are uniformly mixing to obtain mixed
Material, wherein, aramid fiber, glass fibre, zinc dialkyl dithiophosphate, modified filler, modified Teflon micro mist, poly- third
Alkene nitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde, the weight ratio of polyimides are 2：10：1：25：60：15：2：15：2：15；
S4, by batch mixing cold moudling, wherein, the pressure colded pressing be 42MPa, the time colded pressing be 55min, it is then sintered
The gasoline envelope teflon plate is obtained, wherein, the concrete technology of sintering is：With the heating rate of 11 DEG C/h by temperature
From room temperature to 75 DEG C, 160 DEG C of insulation 2h are warming up to the heating rate of 140 DEG C/h, are heated up with the heating rate of 40 DEG C/h
To 220 DEG C of insulation 3h, 370 DEG C of insulation 4h are warming up to the heating rate of 220 DEG C/h, are cooled to the rate of temperature fall of 50 DEG C/h
220 DEG C, 1.5h is incubated, 160 DEG C of insulation 2h are cooled to the rate of temperature fall of 30 DEG C/h, room is cooled to the rate of temperature fall of 45 DEG C/h
Temperature.
Embodiment 4
A kind of gasoline proposed by the present invention seals the preparation method of teflon plate, comprises the following steps：
S1, by CNT acidifying obtain be acidified CNT；Acryloyl chloride is added in dioxane, idol is subsequently adding
The dioxane solution of nitrogen bis-isobutyronitrile, is passed through nitrogen, stirring reaction 42h at 68 DEG C, is subsequently adding acidifying CNT, its
In, acryloyl chloride is 10 with the weight ratio of acidifying CNT：2, to adjust the temperature to and stir anti-under the protection of nitrogen after 68 DEG C
43h, reaction is answered to terminate rear suction filtration, wash, be dried to obtain modified carbon nano-tube；Ptfe micropowder is carried out into argon plasma
Process, wherein, when carrying out argon plasma and processing, discharge gas pressure is 20Pa, and discharge power is 70W, and discharge time is
3min, in being subsequently adding the dimethyl formamide solution of GMA and modified carbon nano-tube, wherein, poly- four
PVF micro mist, GMA, the weight ratio of modified carbon nano-tube are 15：1：3,28h is reacted at 88 DEG C,
Jing cleanings after reaction terminates obtain modified Teflon micro mist；
S2, by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide,
Copper sulfide, copper fluoride are added in acetone, are subsequently adding cetyl trimethylammonium bromide, polyethylene glycol and silane coupler, its
In, samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide, copper sulfide, fluorine
It is 10 to change copper, cetyl trimethylammonium bromide, polyethylene glycol, the weight ratio of silane coupler：3：5：2：10：2：5：2：15：
2：10：1：2, the pH value of regulation system be after 6 at 64 DEG C stirring reaction 4.8h, Jing is filtered, is dried to obtain and changes after reaction terminates
Property filler；
S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate and modified filler are well mixed, are subsequently adding
Modified Teflon micro mist, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde and polyimides are uniformly mixing to obtain mixed
Material；Wherein, aramid fiber, glass fibre, zinc dialkyl dithiophosphate, modified filler, modified Teflon micro mist, poly- third
Alkene nitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde, the weight ratio of polyimides are 10：2：5：15：70：3：15：2：10：3；
S4, by batch mixing cold moudling, wherein, the pressure colded pressing be 48MPa, the time colded pressing be 45min, it is then sintered
The gasoline envelope teflon plate is obtained, wherein, the concrete technology of sintering is：With the heating rate of 23 DEG C/h by temperature
From room temperature to 65 DEG C, 140 DEG C of insulation 3h are warming up to the heating rate of 180 DEG C/h, are heated up with the heating rate of 20 DEG C/h
To 250 DEG C of insulation 2h, 350 DEG C of insulation 6h are warming up to the heating rate of 280 DEG C/h, are cooled to the rate of temperature fall of 35 DEG C/h
250 DEG C, 0.5h is incubated, 140 DEG C of insulation 4h are cooled to the rate of temperature fall of 55 DEG C/h, room is cooled to the rate of temperature fall of 35 DEG C/h
Temperature.
Embodiment 5
A kind of gasoline proposed by the present invention seals the preparation method of teflon plate, comprises the following steps：
S1, by CNT acidifying obtain be acidified CNT；Acryloyl chloride is added in dioxane, idol is subsequently adding
The dioxane solution of nitrogen bis-isobutyronitrile, is passed through nitrogen, stirring reaction 40h at 70 DEG C, is subsequently adding acidifying CNT, its
In, acryloyl chloride is 17 with the weight ratio of acidifying CNT：1.3, it is the stirring under the protection of nitrogen after 70 DEG C to adjust temperature
Reaction 40h, reaction terminates rear suction filtration, washs, is dried to obtain modified carbon nano-tube；Ptfe micropowder is carried out into argon plasma
Body process, wherein, when carrying out argon plasma and processing, discharge gas pressure is 35Pa, and discharge power is 60W, discharge time
For 5min, in being subsequently adding the dimethyl formamide solution of GMA and modified carbon nano-tube, wherein, gather
Tetrafluoroethene micro mist, GMA, the weight ratio of modified carbon nano-tube are 11：1.7：2, react at 90 DEG C
28h, Jing cleanings after reaction terminates obtain modified Teflon micro mist；
S2, by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide,
Copper sulfide, copper fluoride are added in acetone, are subsequently adding cetyl trimethylammonium bromide, polyethylene glycol and silane coupler, its
In, samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide, copper sulfide, fluorine
It is 7 to change copper, cetyl trimethylammonium bromide, polyethylene glycol, the weight ratio of silane coupler：10：3：7：8：7：3：9：11：7：
6：1.6：1.3, the pH value of regulation system be after 5 at 70 DEG C stirring reaction 3h, reaction terminate after Jing filter, be dried to obtain it is modified
Filler；
S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate and modified filler are well mixed, are subsequently adding
Modified Teflon micro mist, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde and polyimides are uniformly mixing to obtain mixed
Material, wherein, aramid fiber, glass fibre, zinc dialkyl dithiophosphate, modified filler, modified Teflon micro mist, poly- third
Alkene nitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde, the weight ratio of polyimides are 6：7：3：18：65：12：11：12：7：12；
S4, by batch mixing cold moudling, wherein, the pressure colded pressing be 45MPa, the time colded pressing be 50min, it is then sintered
The gasoline envelope teflon plate is obtained, wherein, the concrete technology of sintering is：With the heating rate of 20 DEG C/h by temperature
From room temperature to 70 DEG C, 150 DEG C of insulation 2.5h are warming up to the heating rate of 150 DEG C/h, with the heating rate liter of 30 DEG C/h
Temperature is warming up to 360 DEG C of insulation 5h to 240 DEG C of insulation 2.5h with the heating rate of 260 DEG C/h, is lowered the temperature with the rate of temperature fall of 42 DEG C/h
To 230 DEG C, 1h is incubated, 150 DEG C of insulation 3h are cooled to the rate of temperature fall of 50 DEG C/h, room is cooled to the rate of temperature fall of 40 DEG C/h
Temperature.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (8)
1. a kind of gasoline seals the preparation method of teflon plate, it is characterised in that comprise the following steps：
S1, by CNT acidifying obtain be acidified CNT；Acryloyl chloride is added in dioxane, azo two is subsequently adding
The dioxane solution of isobutyronitrile, is passed through nitrogen, stirring reaction 30-45h at 65-75 DEG C, is subsequently adding acidifying CNT,
Adjust temperature be 65-75 DEG C after under the protection of nitrogen stirring reaction 30-45h, reaction terminate rear suction filtration, wash, be dried to obtain
Modified carbon nano-tube；Ptfe micropowder is carried out into argon plasma process, GMA is subsequently adding
In the dimethyl formamide solution of modified carbon nano-tube, 25-30h is reacted at 85-95 DEG C, Jing cleanings after reaction terminates are obtained
Modified Teflon micro mist；
S2, by samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide, sulfuration
Copper, copper fluoride are added in acetone, are subsequently adding cetyl trimethylammonium bromide, polyethylene glycol and silane coupler, adjust body
The pH value of system be 5-6 after at 60-75 DEG C stirring reaction 2-5h, reaction terminate after Jing filter, be dried to obtain modified filler；
S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate and modified filler are well mixed, are subsequently adding modified
Ptfe micropowder, polyacrylonitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde and polyimides are uniformly mixing to obtain batch mixing；
S4, by batch mixing cold moudling, it is then sintered to obtain the gasoline envelope teflon plate.
2. according to claim 1 gasoline seals the preparation method of teflon plate, it is characterised in that in S1, and third
Alkene acyl chlorides is 10-20 with the weight ratio of acidifying CNT：1-2.
3. gasoline according to claim 1 or claim 2 seals the preparation method of teflon plate, it is characterised in that in S1,
When argon plasma process is carried out, discharge gas pressure is 20-45Pa, and discharge power is 50-70W, and discharge time is 3-
8min。
4. gasoline seals the preparation method of teflon plate according to any one of claim 1-3, it is characterised in that
In S1, ptfe micropowder, GMA, the weight ratio of modified carbon nano-tube are 6-15：1-2：1-
3。
5. gasoline seals the preparation method of teflon plate according to any one of claim 1-4, it is characterised in that
In S2, samarium oxide, molybdenum bisuphide, alchlor, calcium carbonate, carborundum, zirconium oxide, wollastonite, ferroso-ferric oxide, sulfuration
Copper, copper fluoride, cetyl trimethylammonium bromide, polyethylene glycol, the weight ratio of silane coupler are 5-10：3-12：1-5：2-
10：3-10：2-12：1-5：2-11：3-15：2-10：3-10：1-2：1-2.
6. gasoline seals the preparation method of teflon plate according to any one of claim 1-5, it is characterised in that
In S3, aramid fiber, glass fibre, zinc dialkyl dithiophosphate, modified filler, modified Teflon micro mist, poly- third
Alkene nitrile, epoxy resin, polyether-ether-ketone, polyformaldehyde, the weight ratio of polyimides are 2-10：2-10：1-5：15-25：60-70：3-
15：2-15：2-15：2-10：3-15.
7. gasoline seals the preparation method of teflon plate according to any one of claim 1-6, it is characterised in that
In S4, during cold moudling, the pressure colded pressing is 42-48MPa, and the time colded pressing is 45-55min.
8. gasoline seals the preparation method of teflon plate according to any one of claim 1-7, it is characterised in that
In S4, the concrete technology of sintering is：With the heating rate of 11-23 DEG C/h by temperature from room temperature to 65-75 DEG C, with 140-
The heating rate of 180 DEG C/h is warming up to 140-160 DEG C of insulation 2-3h, and with the heating rate of 20-40 DEG C/h 220-250 DEG C is warming up to
Insulation 2-3h, is warming up to 350-370 DEG C of insulation 4-6h, with the rate of temperature fall of 35-50 DEG C/h with the heating rate of 220-280 DEG C/h
220-250 DEG C is cooled to, 0.5-1.5h is incubated, 140-160 DEG C of insulation 2-4h is cooled to the rate of temperature fall of 30-55 DEG C/h, with
The rate of temperature fall of 35-45 DEG C/h is cooled to room temperature.
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| CN201610981629.8A CN106566160A (en) | 2016-11-09 | 2016-11-09 | Preparation method of polytetrafluoroethylene sheet for automobiles |
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| CN201610981629.8A CN106566160A (en) | 2016-11-09 | 2016-11-09 | Preparation method of polytetrafluoroethylene sheet for automobiles |
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| CN109486177A (en) * | 2018-10-22 | 2019-03-19 | 全豐國際有限公司 | A kind of imitation gold copper-base alloy and production and processing technology of included magnetite function |
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| CN109486177A (en) * | 2018-10-22 | 2019-03-19 | 全豐國際有限公司 | A kind of imitation gold copper-base alloy and production and processing technology of included magnetite function |
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| CN111269521A (en) * | 2019-06-20 | 2020-06-12 | 中原工学院 | Preparation method of copper sulfide flexible composite conductive film |
| CN111269521B (en) * | 2019-06-20 | 2022-03-04 | 中原工学院 | Preparation method of copper sulfide flexible composite conductive film |
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| CN115572577A (en) * | 2022-01-27 | 2023-01-06 | 淄博理研泰山涂附磨具有限公司 | High-fluidity grinding material and preparation method thereof |
| CN115403031B (en) * | 2022-09-22 | 2023-10-27 | 江西紫宸科技有限公司 | Modified nitrogen-doped carbon nanotube and preparation method and application thereof |
| CN115403031A (en) * | 2022-09-22 | 2022-11-29 | 江西紫宸科技有限公司 | Modified nitrogen-doped carbon nanotube and preparation method and application thereof |
| CN115895009A (en) * | 2022-12-16 | 2023-04-04 | 杨宗文 | Wear-resistant and super-hydrophobic polycarbonate substrate and preparation method thereof |
| CN115895009B (en) * | 2022-12-16 | 2024-04-05 | 福州恒美光电材料有限公司 | Wear-resistant super-hydrophobic polycarbonate substrate and preparation method thereof |
| CN116082837A (en) * | 2023-03-07 | 2023-05-09 | 无锡惠源高级润滑油有限公司 | Preparation method of lubricating resin composition |
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