CN1699494A - Nano packing filling and method for making same - Google Patents
Nano packing filling and method for making same Download PDFInfo
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- CN1699494A CN1699494A CN 200510017669 CN200510017669A CN1699494A CN 1699494 A CN1699494 A CN 1699494A CN 200510017669 CN200510017669 CN 200510017669 CN 200510017669 A CN200510017669 A CN 200510017669A CN 1699494 A CN1699494 A CN 1699494A
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Abstract
The invention provides a nano packing filling material comprising packing base material and additive, the additive contains special type nano antiwearing inhibitor whose content is 8-46 wt% of the total packing filling material. The invention also discloses the process of preparation.
Description
Technical field
The invention belongs to sealing, relate in particular to the sealing material of fluid medium, is nano packing filling specifically, the invention still further relates to the manufacture method of this nano packing filling.
Background technology
Field of sealing technology is divided into sealing static seal and dynamic seal usually.Packing filling is sealed in quiet, all be widely used in the dynamic seal, when correctly using packing filling, basically can not change the sealing base reason of packing filling, at this moment the sealing property of packing filling just depends primarily on the material composition of packing filling, this just requires packing filling that the good compression rate of static sealing materials should be arranged, performance such as rebound degree and stress relaxation rate, but also requirement should have the good toughness of dynamic sealing material, pull resistance, recovery, wear resistance, self lubricity, heat conductivity, performances such as preservative property are so material and material behavior are the emphasis of field of sealing technology research always.
Packing filling is made up of sealing material matrix, binding agent, lubricant and specialist additive basically.The sealing material matrix has asbestos, high purity graphite, polytetrafluoroethylene fiber, aramid fiber, carbon fiber, ceramic fiber, glass fibre or the like usually.Binding agent has natural rubber, synthetic rubber etc. usually.Lubricant has graphite, PTFE solution, molybdenumdisulphide, mineral oil, vegetable and animals oils or the like usually.Specialist additive has zinc particulate, barrier agent, molybdenum base inhibiter or the like usually.Though and these materials all have some excellent characteristic, but also has certain defective simultaneously, as: high purity graphite is frangible, carbon fiber is easily crisp, the aramid fiber self lubricity is poor, PTFE fiber pull resistance difference etc., only overcome the defective that these sealing material body materials itself exist, could achieve remarkable sealing effectiveness and extraordinary work-ing life.
Though existing packing filling constantly improves its purity and its complete processing on starting material, its performance at aspects such as tensile strength, thermal conductivity, thermal expansivity, density, chemical stabilities all is significantly increased, but the frictional coefficient of packing and the etching problem of equipment do not obtained big improvement all the time, thereby the sealing property of packing and the work-ing life of equipment have directly been influenced.
Analyze the sealing shortcoming of traditional pump with packing filling, topmost terms of settlement is exactly the corrosion that effectively reduces the frictional coefficient of packing filling and axle or axle sleeve and prevent pump shaft or axle sleeve.Because big frictional coefficient can produce bigger frictional force, make pump shaft produce wearing and tearing, thereby the breakseal face cause revealing.Generate a large amount of heat of friction simultaneously, the sulphur in the material, chlorion be meeting corrosion and destruction trim under the effect of temperature, thereby strengthens spillage, and this has just influenced the sealing property of packing and the work-ing life of equipment greatly.
Analyze the sealing shortcoming of traditional valve with packing filling, topmost terms of settlement is exactly the frictional coefficient that effectively prevents the corrosion of valve rod and reduce packing and valve rod., produce bigger frictional force simultaneously, thereby the work-ing life that easily makes packing and stem wear reduce packing and valve because thereby the corrosion of valve rod easily makes sealing face damage cause revealing.
Nanometer is length metering unit (nm), be one meter part per billion, be about five or six ten thousand of number of people hair/.When material is refine to nanometer scale, extremely active-sound, light, magnetic, heat, mechanics etc. may produce special variation in its physics reflection, nanoparticle will demonstrate small-size effect, surface interface effect, quantum size effect and quantum tunneling effect, make nanoparticle have this material not available many unusual physics, chemical property when macro-size, this four big characteristic effect has been laid solid theory for development nanotechnology series product.
Summary of the invention
The objective of the invention is to overcome existing above-mentioned deficiency in the prior art, and a kind of low-friction coefficient and low corrosive nano packing filling are provided, to reach sealing property that improves packing and the purpose that prolongs the work-ing life of packing and equipment.Another object of the present invention provides the method for making this nano packing filling.
The task that the present invention proposes is finished by following technical proposal: a kind of nano packing filling, comprise packing body material and additive, comprise extraordinary nano abrasion-resistant inhibiter in the described additive, extraordinary nano abrasion-resistant inhibiter accounts for 8%～46% of packing filling gross weight.
Described extraordinary nano abrasion-resistant inhibiter is made up of extraordinary nm inorganic compound and lubricating oil, and the content of extraordinary nm inorganic compound in lubricating oil is 12～36%, and the particle diameter of extraordinary nm inorganic compound is 10～50 nanometers.
Described extraordinary nm inorganic compound is silicon carbide SiC and silicon nitride Si
3N
4In at least a.
Described lubricating oil is common exposed gear oil, Industrial Closed gear oil or food grade lubricating oil.
The manufacture method of this nano packing filling, comprise the process that the packing body material is woven into packing, also comprise and the packing body material being flooded in extraordinary nano abrasion-resistant inhibiter or/and the process that the packing after the shaping is flooded in extraordinary nano abrasion-resistant inhibiter, this steeping process is pulled the back out and was dried by the fire under 30～80 ℃ envrionment temperature 2～8 hours for packing body material or the good packing of braiding were flooded 2～24 hours in extraordinary nano abrasion-resistant inhibiter.
The production method of described extraordinary nano abrasion-resistant inhibiter is: take by weighing extraordinary nm inorganic compound and lubricating oil by prescription, extraordinary nm inorganic compound is added in the lubricating oil, fully stir the back and placed under 30～45 ℃ temperature 2～3 hours.
The present invention is with the body material of present various packings such as soft graphite; ramee; polytetrafluoroethylene fiber; aramid fiber; carbon fiber; ceramic fiber; wire rods such as glass fibre; flooded extraordinary nano abrasion-resistant inhibiter; carry out the processing of packing by various packing weaving machineries again; after processing, can flood extraordinary nano abrasion-resistant inhibiter once more; by flooding extraordinary nano abrasion-resistant inhibiter; can make this nano material adhere to fully and infiltrate packing the surface and inner; in use; this nano material can be under the effect of pressure and envrionment temperature; nano nonmetal protective membrane in packing and the densification of equipment surface formation one deck; this nano nonmetal protective membrane can be repaired the irregularity degree of metal material surface; greatly reduce the frictional coefficient of storeroom; thereby prevented wearing and tearing, this nano nonmetal film has stoped the chemistry and the electrochemical corrosion of metallic substance simultaneously.
The wear-resistant principle of work and the application of nano packing filling:
When using nano packing filling; extraordinary nano abrasion-resistant inhibitor in the packing; under the effect of preliminary tension, squeezed; and be diffused into rapidly on the trim, taking them to all metallic surfaces that friction is arranged along with the running of machinery is trim, activates under certain temperature and pressure; firm oozing is embedded in metal part surface pitting and the micropore; and, make original intermetallic oil membrane or chemical films become nanometer film, thereby reduce frictional force greatly at metallic surface formation nanometer protective membrane.After testing, the frictional coefficient of common packing filling is 0.1～0.2, and the present invention can drop to 0.04～0.07 with frictional coefficient.On-the-spot comparison: use aramid fiber as the sealing material matrix, be applied on the sump pump of thermal power plant through the nanometer aramid fiber packing that the inventive method produces, the pump shaft diameter is 80mm, and rotating speed 1290r/min, medium are sewage, grain amount 30%, temperature is 80～100 degrees centigrade, and pressure is 20bar, and continuous operation is after 2 months, when changing packing, there is not noticeable wear on the axle sleeve.And adopt common aramid fiber packing, the same operating mode and the cycle of operation, have the dark wearing and tearing of 0.8～1.1mm on the axle sleeve, the work-ing life of as seen adopting nano packing filling can effectively reduce wearing and tearing and improve equipment.
The corrosion protection principle of work and the application of nano packing filling:
When compressing nano packing filling; extraordinary nano abrasion-resistant inhibitor in the packing is extruded; and be diffused on the trim rapidly; nano molecular penetrates in the pore of metallic surface; having formed the 0.03-0.05 micron in the metallic surface can't destructive unit molecule nanometer protective film, to prevent the galvanic corrosion of metallic substance.On-the-spot comparison; With soft graphite is the packing_seal material matrix, and the nano high purity degree graphite packing with the inventive method is produced is applied on thermal power plant's thermal oil valve, medium is No. 68 L-TSA turbine oils, and temperature is 80～120 ℃, and pressure is 60bar, use after 3 months, valve rod does not have corrosion phenomenon, does not have to leak.And adopting traditional high purity graphite packing in same operating mode and life cycle, valve rod has heavy corrosion to peel off and wear phenomenon, and has serious leakage phenomenon.The remarkable anti-corrosion performance of nano packing filling can be described thus, effectively raise the work-ing life of equipment.
By as seen above-mentioned, the present invention compared with prior art, have the following advantages: nano packing filling is with existing packing body material, packing has flooded extraordinary nano abrasion-resistant inhibiter, in the tensile strength that does not change packing, thermal conductivity, thermal expansivity, density, on the basis of aspect performances such as chemical stability, most importantly with the frictional coefficient of packing filling from 0.1～0.2, dropped to 0.04～0.07, reduce frictional force greatly, reduced wearing and tearing, thereby in that fundamentally to have solved traditional packing not wear-resisting, axle there are wearing and tearing, shortcomings such as shaft power consumption is big.Monomolecular nanometer protective membrane has effectively prevented the corrosion of equipment simultaneously.Therefore, greatly improve the sealing property of packing and prolong work-ing life of equipment, this is that nano packing filling is different from two the most outstanding characteristics of traditional packing and effect.
Embodiment
Embodiment 1: produce extraordinary nano abrasion-resistant inhibiter: take by weighing silicon carbide (SiC) 1.5 kilogram, the silicon nitride (Si of particle diameter less than 20 nanometers
3N
4) 0.25 kilogram, 10 kilograms of No. 32 commercially available food grade lubricating oil are passed through 400 purpose strainer filterings, and lubricating oil is warmed to 30 ℃, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 30 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the aramid fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 12 hours, pull the aramid fiber wire rod out and drench dried wear-resistant inhibiter, the aramid fiber wire rod is put into thermostat container, under 30 ℃ temperature, placed 6 hours.Be woven into packing according to specification and complete processing then, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 10 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing was dried 4 hours under 80 ℃ temperature, promptly make nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about about 22% in this nano packing filling.
Applying working condition difference according to nano packing filling, No. 32 food grade lubricating oil in the present embodiment can be with the replacement of other viscosity, such as No. 15, No. 46, No. 68 or No. 100, also available 68,100,150,220 or No. 320 common exposed gear oil replace, and perhaps replace with 68,100,150,220,320,460 or No. 680 Industrial Closed gear oils.The selection of lubricating oil will be decided the service requirements of packing filling on field working conditions, as just needing use food grade lubricating oil in food service industry, in industries such as electric power, metallurgy with regard to available industrial gear oil.
Embodiment 2: produce extraordinary nano abrasion-resistant inhibiter: take by weighing particle diameter less than 1.2 kilograms in the silicon carbide of 30 nanometers, No. 320 common exposed gear oil are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon carbide that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 45 ℃ temperature, placed 2.5 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the aramid fiber wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 12 hours, and pulled out the aramid fiber wire rod and drench dried wear-resistant inhibiter, the aramid fiber wire rod is put into thermostat container, under 50 ℃ temperature, placed 5 hours.The aramid fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 12 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 40 ℃ temperature and dried in 6 hours, promptly make nano packing filling.
Embodiment 3: produce extraordinary nano abrasion-resistant inhibiter: 3.6 kilograms of silicon nitrides that take by weighing particle diameter 30～50 nanometers, No. 220 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, gear oil is warmed to 35 ℃, the silicon nitride that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: the aramid fiber wire rod is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 10 hours, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 75 ℃ temperature and dried in 4.5 hours, promptly make nano packing filling.
Embodiment 4: produce extraordinary nano abrasion-resistant inhibiter: 1.5 kilograms in the silicon carbide, 1.5 kilograms of the silicon nitrides that take by weighing particle diameter 20～40 nanometers, 12 kilograms of No. 100 food grade lubricating oil are passed through 400 purpose strainer filterings, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 35 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the aramid fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 12 hours, pull the aramid fiber wire rod out and drench dried wear-resistant inhibiter, again the aramid fiber wire rod is put into thermostat container, under 60 ℃ temperature, place and dried in 5.5 hours.The aramid fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, promptly makes nano packing filling.
Embodiment 5: produce extraordinary nano abrasion-resistant inhibiter: take by weighing silicon carbide 1.5 kilogram, the silicon nitride 2.5 kilogram of particle diameter less than 50 nanometers, No. 68 commercially available Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 20 kilograms of gear oils after the filtration and put into stainless steel cask, gear oil is warmed to 40 ℃, silicon carbide that weighs up and silicon nitride are added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the ceramic fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 24 hours, pull the ceramic fiber wire rod out and drench dried wear-resistant inhibiter, the ceramic fiber wire rod is put into thermostat container, under 30 ℃ temperature, place and dried in 3 hours.The ceramic fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 24 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 80 ℃ temperature and dried in 2 hours, promptly make nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about about 10% in this nano packing filling.
Embodiment 6: produce extraordinary nano abrasion-resistant inhibiter: take by weighing particle diameter less than 2.4 kilograms in the silicon carbide of 30 nanometers, No. 150 common exposed gear oil are passed through 400 purpose strainer filterings, get 15 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon carbide that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 45 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the ceramic fiber wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 20 hours, pull the ceramic fiber wire rod out and drench dried wear-resistant inhibiter, the ceramic fiber wire rod is put into thermostat container, under 50 ℃ temperature, place and dried in 2.5 hours.The ceramic fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 22 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 40 ℃ temperature and dried in 3 hours, promptly make nano packing filling.
Embodiment 7: produce extraordinary nano abrasion-resistant inhibiter: 2.8 kilograms of silicon nitrides that take by weighing particle diameter 30～50 nanometers, No. 680 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 20 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon nitride that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the ceramic fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 23 hours, pull the ceramic fiber wire rod out and drench dried wear-resistant inhibiter, the ceramic fiber wire rod is put into thermostat container, under 75 ℃ temperature, place and dried in 2 hours.The ceramic fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and the packing that braiding is good carries out shaping by trimmer, promptly makes nano packing filling.
Embodiment 8: produce extraordinary nano abrasion-resistant inhibiter: take by weighing silicon carbide 1.5 kilogram, the silicon nitride 1.25 kilogram of particle diameter less than 50 nanometers, No. 460 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the glass fibre wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 18 hours, pull the glass fibre wire rod out and drench dried wear-resistant inhibiter, the glass fibre wire rod is put into thermostat container, under 33 ℃ temperature, place and dried in 3 hours.The glass fibre wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 22 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing was placed 2 hours under 70 ℃ temperature, promptly made nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about about 12% in this nano packing filling.
Embodiment 9: produce extraordinary nano abrasion-resistant inhibiter: take by weighing particle diameter less than 2.7 kilograms in the silicon carbide of 30 nanometers, No. 100 common exposed gear oil are passed through 400 purpose strainer filterings, get 12 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon carbide that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 42 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the glass fibre wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 20 hours, pull the glass fibre wire rod out and drench dried wear-resistant inhibiter, the glass fibre wire rod is put into thermostat container, under 50 ℃ temperature, place and dried in 3 hours.The glass fibre wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and the packing that braiding is good carries out shaping by trimmer, promptly makes nano packing filling.
Embodiment 10: produce extraordinary nano abrasion-resistant inhibiter: 6.6 kilograms of silicon nitrides that take by weighing particle diameter 30～40 nanometers, No. 100 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 20 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon nitride that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 38 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the glass fibre wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 21 hours, pull glass fibre out and drench dried wear-resistant inhibiter, the glass fibre wire rod is put into thermostat container, under 55 ℃ temperature, place and dried in 2 hours.The glass fibre wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 18 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 40 ℃ temperature and dried in 3 hours, promptly make nano packing filling.
Embodiment 11: produce extraordinary nano abrasion-resistant inhibiter: take by weighing silicon carbide 1.5 kilogram, the silicon nitride 5 kilogram of particle diameter less than 20 nanometers, No. 46 food grade lubricating oil are passed through 400 purpose strainer filterings, get 20 kilograms of food grade lubricating oil after the filtration and put into stainless steel cask, oil is warmed to 30 ℃, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 37 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: the carbon fiber wire rod is woven into packing according to specification and complete processing, the packing that braiding is good carries out shaping by trimmer, then orthopedic packing was put into extraordinary nano abrasion-resistant inhibiter dipping 10 hours, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 70 ℃ temperature and dried in 4 hours, promptly make nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about about 28% in this nano packing filling.
Embodiment 12: produce extraordinary nano abrasion-resistant inhibiter: 1.3 kilograms in the silicon carbide that takes by weighing particle diameter 20～40 nanometers, No. 220 common exposed gear oil are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon carbide that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 45 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the carbon fiber wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 11 hours, and pulled out the carbon fiber wire rod and drench dried wear-resistant inhibiter, the carbon fiber wire rod is put into thermostat container, under 60 ℃ temperature, place and dried in 5 hours.The carbon fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 10 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 30 ℃ temperature and dried in 6 hours, promptly make nano packing filling.
Embodiment 13: produce extraordinary nano abrasion-resistant inhibiter: 2.6 kilograms of silicon nitrides that take by weighing particle diameter 30～50 nanometers, No. 320 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, gear oil is warmed to 35 ℃, the silicon nitride that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 35 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the carbon fiber wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 11 hours, and pulled out the carbon fiber wire rod and drench dried wear-resistant inhibiter, the carbon fiber wire rod is put into thermostat container, under 50 ℃ temperature, place and dried in 5.5 hours.The carbon fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 12 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 75 ℃ temperature and dried in 4.5 hours, promptly make nano packing filling.
Embodiment 14: produce extraordinary nano abrasion-resistant inhibiter: 1.5 kilograms in the silicon carbide, 1.8 kilograms of the silicon nitrides that take by weighing particle diameter 20～40 nanometers, No. 68 food grade lubricating oil are passed through 400 purpose strainer filterings, get 12 kilograms of lubricating oil after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 30 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the carbon fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 12 hours, pull the carbon fiber wire rod out and drench dried wear-resistant inhibiter, the carbon fiber wire rod is put into thermostat container, under 60 ℃ temperature, place and dried in 5.5 hours.The carbon fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and the packing that braiding is good carries out shaping by trimmer, promptly makes nano packing filling.
Embodiment 15: produce extraordinary nano abrasion-resistant inhibiter: take by weighing silicon carbide 5 kilogram, the silicon nitride 2.5 kilogram of particle diameter less than 50 nanometers, No. 150 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 30 kilograms of gear oils after the filtration and put into stainless steel cask, gear oil is warmed to 40 ℃, silicon carbide that weighs up and silicon nitride are added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the polytetrafluoroethylene fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 14 hours, pull the polytetrafluoroethylene fiber wire rod out and drench dried wear-resistant inhibiter, the polytetrafluoroethylene fiber wire rod is put into thermostat container, under 45 ℃ temperature, place and dried in 4 hours.The polytetrafluoroethylene fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 16 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 80 ℃ temperature and dried in 3 hours, promptly make nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about about 28% in this nano packing filling.
Embodiment 16: produce extraordinary nano abrasion-resistant inhibiter: take by weighing particle diameter less than 4 kilograms in the silicon carbide of 30 nanometers, No. 68 common exposed gear oil are passed through 400 purpose strainer filterings, get 15 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon carbide that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 45 ℃ temperature, placed 2.5 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the polytetrafluoroethylene fiber wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 18 hours, pull the polytetrafluoroethylene fiber wire rod out and drench dried wear-resistant inhibiter, the polytetrafluoroethylene fiber wire rod is put into thermostat container, under 50 ℃ temperature, place and dried in 5 hours.The polytetrafluoroethylene fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 15 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 70 ℃ temperature and dried in 3 hours, promptly make nano packing filling.
Embodiment 17: produce extraordinary nano abrasion-resistant inhibiter: 2 kilograms of silicon nitrides that take by weighing particle diameter 30～50 nanometers, No. 680 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon nitride that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the polytetrafluoroethylene fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 17 hours, pull the polytetrafluoroethylene fiber wire rod out and drench dried wear-resistant inhibiter, the polytetrafluoroethylene fiber wire rod is put into thermostat container, under 75 ℃ temperature, place and dried in 3.5 hours.The polytetrafluoroethylene fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and the packing that braiding is good carries out shaping by trimmer, promptly makes nano packing filling.
Embodiment 18: produce extraordinary nano abrasion-resistant inhibiter: 0.5 kilogram in the silicon carbide, 2 kilograms of the silicon nitrides that take by weighing particle diameter 20～50 nanometers, No. 68 food grade lubricating oil are passed through 400 purpose strainer filterings, get 20 kilograms of lubricating oil after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 35 ℃ temperature, placed 2.5 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the polytetrafluoroethylene fiber wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 16 hours, pull the polytetrafluoroethylene fiber wire rod out and drench dried wear-resistant inhibiter, the polytetrafluoroethylene fiber wire rod is put into thermostat container, under 60 ℃ temperature, place and dried in 3.5 hours.The polytetrafluoroethylene fiber wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 16 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 60 ℃ temperature and dried in 4.5 hours, promptly make nano packing filling.
Embodiment 19: produce extraordinary nano abrasion-resistant inhibiter: take by weighing silicon carbide 1.5 kilogram, the silicon nitride 1.25 kilogram of particle diameter less than 50 nanometers, No. 460 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the ramee wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 8 hours, pull the ramee wire rod out and drench dried wear-resistant inhibiter, the ramee wire rod is put into thermostat container, under 38 ℃ temperature, placed 8 hours.The ramee wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 6 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 70 ℃ temperature and dried in 6 hours, promptly make nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about 35% in this nano packing filling.
Embodiment 20: produce extraordinary nano abrasion-resistant inhibiter: take by weighing particle diameter less than 3 kilograms in the silicon carbide of 30 nanometers, No. 150 common exposed gear oil are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon carbide that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 40 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the ramee wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 7 hours, and pulled out the ramee wire rod and drench dried wear-resistant inhibiter, the ramee wire rod is put into thermostat container, under 50 ℃ temperature, placed 7 hours.The ramee wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and the packing that braiding is good carries out shaping by trimmer, promptly makes nano packing filling.
Embodiment 21: produce extraordinary nano abrasion-resistant inhibiter: 6 kilograms of silicon nitrides that take by weighing particle diameter 30～40 nanometers, No. 68 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 25 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon nitride that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 36 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the ramee wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 6.5 hours, pull the ramee wire rod out and drench dried wear-resistant inhibiter, the ramee wire rod is put into thermostat container, under 55 ℃ temperature, placed 6 hours.The ramee wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 7 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 40 ℃ temperature and dried in 8 hours, promptly make nano packing filling.
Embodiment 22: produce extraordinary nano abrasion-resistant inhibiter: 2 kilograms in the silicon carbide, 2 kilograms of the silicon nitrides that take by weighing particle diameter 20～50 nanometers, No. 46 food grade lubricating oil are passed through 400 purpose strainer filterings, get 12 kilograms of food grade lubricating oil after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 35 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: the ramee wire rod is woven into packing according to specification and complete processing, the packing that braiding is good carries out shaping by trimmer, then orthopedic packing was put into extraordinary nano abrasion-resistant inhibiter dipping 8 hours, pull packing out and drench dried wear-resistant inhibiter, at last packing was placed 8 hours under 70 ℃ temperature, promptly made nano packing filling.
Embodiment 23: produce extraordinary nano abrasion-resistant inhibiter: take by weighing silicon carbide 1.5 kilogram, the silicon nitride 2.5 kilogram of particle diameter less than 20 nanometers, No. 32 food grade lubricating oil are passed through 400 purpose strainer filterings, get 20 kilograms of lubricating oil after the filtration and put into stainless steel cask, lubricating oil is warmed to 30 ℃, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 37 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: the organic synthetic fibers wire rod is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 18 hours, pull packing out and drench dried wear-resistant inhibiter, at last packing was placed 4 hours under 70 ℃ temperature, promptly made nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about 28% in this nano packing filling.
Embodiment 24: produce extraordinary nano abrasion-resistant inhibiter: 3 kilograms in the silicon carbide that takes by weighing particle diameter 20～40 nanometers, No. 220 common exposed gear oil are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, the silicon carbide that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 45 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the organic synthetic fibers wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 16 hours, pull the organic synthetic fibers wire rod out and drench dried wear-resistant inhibiter, the organic synthetic fibers wire rod is put into thermostat container, under 60 ℃ temperature, placed 4.5 hours.The organic synthetic fibers wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 16 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 60 ℃ temperature and dried in 4.5 hours, promptly make nano packing filling.
Embodiment 25: produce extraordinary nano abrasion-resistant inhibiter: 5 kilograms of silicon nitrides that take by weighing particle diameter 30～50 nanometers, No. 320 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 16 kilograms of gear oils after the filtration and put into stainless steel cask, gear oil is warmed to 35 ℃, the silicon nitride that weighs up is added in the gear oil, after fully stirring, put it in the thermostat container, under 35 ℃ temperature, placed 2 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the organic synthetic fibers wire rod was put into extraordinary nano abrasion-resistant inhibiter dipping 17 hours, pull the organic synthetic fibers wire rod out and drench dried wear-resistant inhibiter, the organic synthetic fibers wire rod is put into thermostat container, under 30 ℃ temperature, place and dried in 5 hours.The organic synthetic fibers wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and orthopedic packing put into extraordinary nano abrasion-resistant inhibiter dipping 18 hours once more, pull packing out and drench dried wear-resistant inhibiter, at last packing is placed under 75 ℃ temperature and dried in 3 hours, promptly make nano packing filling.
Embodiment 26: produce extraordinary nano abrasion-resistant inhibiter: 1.8 kilograms in the silicon carbide, 1.8 kilograms of the silicon nitrides that take by weighing particle diameter 20～40 nanometers, No. 68 food grade lubricating oil are passed through 400 purpose strainer filterings, get 10 kilograms of lubricating oil after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the lubricating oil, after fully stirring, put it in the thermostat container, under 30 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the organic synthetic fibers wire rod is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 16 hours, pull the organic synthetic fibers wire rod out and drench dried wear-resistant inhibiter, the organic synthetic fibers wire rod is put into thermostat container, under 40 ℃ temperature, place and dried in 8 hours.The organic synthetic fibers wire rod that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and the packing that braiding is good carries out shaping by trimmer, promptly makes nano packing filling.
Embodiment 27: produce extraordinary nano abrasion-resistant inhibiter: 2 kilograms in the silicon carbide, 1.5 kilograms of the silicon nitrides that take by weighing particle diameter 20～40 nanometers, No. 100 Industrial Closed gear oils are passed through 400 purpose strainer filterings, get 10 kilograms of gear oils after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the gear oil, after fully stirring, put it in the thermostat container, under 30 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: earlier the soft graphite line is put into the extraordinary nano abrasion-resistant inhibiter of producing and flooded 2 hours, pull the soft graphite line out and drench dried wear-resistant inhibiter, the soft graphite line is put into thermostat container, under 40 ℃ temperature, place and dried in 8 hours.The soft graphite line that flooded extraordinary nano abrasion-resistant inhibiter is woven into packing according to specification and complete processing, and the packing that braiding is good carries out shaping by trimmer, promptly makes nano packing filling.
Embodiment 28: produce extraordinary nano abrasion-resistant inhibiter: 2 kilograms in the silicon carbide, 2 kilograms of the silicon nitrides that take by weighing particle diameter 20～50 nanometers, No. 320 common exposed gear oil are passed through 400 purpose strainer filterings, get 12 kilograms of gear oils after the filtration and put into stainless steel cask, silicon carbide that weighs up and silicon nitride are added in the gear oil, after fully stirring, put it in the thermostat container, under 35 ℃ temperature, placed 3 hours, promptly make extraordinary nano abrasion-resistant inhibiter.
Produce nano packing filling: the soft graphite line is woven into packing according to specification and complete processing, the packing that braiding is good carries out shaping by trimmer, then orthopedic packing was put into extraordinary nano abrasion-resistant inhibiter dipping 3 hours, pull packing out and drench dried wear-resistant inhibiter, at last packing was placed 6 hours under 80 ℃ temperature, promptly made nano packing filling.The ratio of contained extraordinary nano abrasion-resistant inhibiter is about 45% in this nano packing filling.
In the various embodiments described above, the time that the packing that body material or braiding are good floods in extraordinary nano abrasion-resistant inhibiter is generally decided by the absorption property of body material, high such as the sealing substrate that contains soft graphite to the adsorptive power of lubricating oil, therefore the time of dipping just can not be long, and the absorption property of glass fibre, ceramic fiber is relatively poor, then need long dipping time, the content that could guarantee the nonmetal wear-resistant inhibiter of nano inorganic in the made nano packing filling meets the requirements, thereby guarantees the performance of nano packing filling.
Use manufacture method of the present invention, do not changing existing installation and acquiring on the basis of a large amount of new installations and can realize continuous production, and obtain different size easily, the nano packing filling of differing materials, can solve various pump classes, the valve class, the static and dynamic sealing of equipment such as wide aperture and profiled holes, can arbitrarily intercept according to the needs of sealing, be wrapped in sealing position pressure seal, give the user and use and all bring great convenience, and production cost is than original not too big raising, but can make the sealing property of conventional disc root filler and be greatly improved the work-ing life of equipment, thereby the social benefit that the present invention had and economic benefit all are significant.
Claims (6)
1, a kind of nano packing filling comprises packing body material and additive, it is characterized in that: comprise extraordinary nano abrasion-resistant inhibiter in the described additive, extraordinary nano abrasion-resistant inhibiter accounts for 8%～46% of packing filling gross weight.
2, nano packing filling as claimed in claim 1, it is characterized in that: described extraordinary nano abrasion-resistant inhibiter, form by extraordinary nm inorganic compound and lubricating oil, the content of extraordinary nm inorganic compound in lubricating oil is 12～36%, and the particle diameter of extraordinary nm inorganic compound is 10～50 nanometers.
3, nano packing filling as claimed in claim 2 is characterized in that: described extraordinary nm inorganic compound is silicon carbide SiC and silicon nitride Si
3N
4In at least a.
4, nano packing filling as claimed in claim 2 is characterized in that: described lubricating oil is common exposed gear oil, Industrial Closed gear oil or food grade lubricating oil.
5, as the manufacture method of claim 1,2,3 or 4 described nano packing fillings, comprise the process that the packing body material is woven into packing, it is characterized in that: also comprise and the packing body material being flooded in extraordinary nano abrasion-resistant inhibiter or/and the process that the packing after the shaping is flooded in extraordinary nano abrasion-resistant inhibiter, this steeping process is pulled the back out and was dried by the fire under 30～80 ℃ envrionment temperature 2～8 hours for packing body material or the good packing of braiding were flooded 2～24 hours in extraordinary nano abrasion-resistant inhibiter.
6, the manufacture method of nano packing filling as claimed in claim 5, it is characterized in that: the production method of described extraordinary nano abrasion-resistant inhibiter is: take by weighing extraordinary nm inorganic compound and lubricating oil by prescription, extraordinary nm inorganic compound is added in the lubricating oil, fully stir the back and under 30～45 ℃ temperature, placed 2～3 hours.
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| CNB2005100176692A CN100341972C (en) | 2005-06-10 | 2005-06-10 | Nano packing filling and method for making same |
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| CNB2005100176692A CN100341972C (en) | 2005-06-10 | 2005-06-10 | Nano packing filling and method for making same |
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| CN1699494A true CN1699494A (en) | 2005-11-23 |
| CN100341972C CN100341972C (en) | 2007-10-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002339A (en) * | 2010-09-29 | 2011-04-06 | 浙江国泰密封材料股份有限公司 | Method for removing harmful elements of braided packing |
| CN104152106A (en) * | 2014-07-30 | 2014-11-19 | 苏州通力电气有限公司 | Low-friction-factor soft filler and preparation method thereof |
| CN104178086A (en) * | 2014-07-30 | 2014-12-03 | 苏州通力电气有限公司 | Low-friction coefficient soft filler |
| CN104177670A (en) * | 2014-07-30 | 2014-12-03 | 苏州通力电气有限公司 | Preparation method of sheet soft packing |
| CN106370594A (en) * | 2016-10-14 | 2017-02-01 | 河南科技大学 | Method and device for measuring key technical parameters of packing-plate spring floating sealing system |
| CN107906202A (en) * | 2017-11-14 | 2018-04-13 | 吴迪 | A kind of preparation method of fiber packing |
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| CN1091781C (en) * | 2000-06-14 | 2002-10-02 | 许凤山 | Plastic type flexible gasket |
| CN1171967C (en) * | 2002-04-02 | 2004-10-20 | 关晓辉 | Reformable soft gasket |
| CN1269931C (en) * | 2004-04-23 | 2006-08-16 | 马季元 | Sealing filling for well pumping unit and its using method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002339A (en) * | 2010-09-29 | 2011-04-06 | 浙江国泰密封材料股份有限公司 | Method for removing harmful elements of braided packing |
| CN102002339B (en) * | 2010-09-29 | 2013-07-17 | 浙江国泰密封材料股份有限公司 | Method for removing harmful elements of braided packing |
| CN104152106A (en) * | 2014-07-30 | 2014-11-19 | 苏州通力电气有限公司 | Low-friction-factor soft filler and preparation method thereof |
| CN104178086A (en) * | 2014-07-30 | 2014-12-03 | 苏州通力电气有限公司 | Low-friction coefficient soft filler |
| CN104177670A (en) * | 2014-07-30 | 2014-12-03 | 苏州通力电气有限公司 | Preparation method of sheet soft packing |
| CN104152106B (en) * | 2014-07-30 | 2015-12-30 | 苏州赛斯德工程设备有限公司 | A kind of low-friction coefficient wadding and preparation method thereof |
| CN104178086B (en) * | 2014-07-30 | 2015-12-30 | 苏州赛斯德工程设备有限公司 | A kind of low-friction coefficient wadding |
| CN104177670B (en) * | 2014-07-30 | 2016-03-23 | 苏州赛斯德工程设备有限公司 | A kind of preparation method of sheet wadding |
| CN106370594A (en) * | 2016-10-14 | 2017-02-01 | 河南科技大学 | Method and device for measuring key technical parameters of packing-plate spring floating sealing system |
| CN106370594B (en) * | 2016-10-14 | 2019-02-01 | 河南科技大学 | Packing-leaf spring floating seal system core technical parameter measuring method and device |
| CN107906202A (en) * | 2017-11-14 | 2018-04-13 | 吴迪 | A kind of preparation method of fiber packing |
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