CN106366370B - A kind of sealing ring - Google Patents
A kind of sealing ring Download PDFInfo
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- CN106366370B CN106366370B CN201610760819.7A CN201610760819A CN106366370B CN 106366370 B CN106366370 B CN 106366370B CN 201610760819 A CN201610760819 A CN 201610760819A CN 106366370 B CN106366370 B CN 106366370B
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- 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
- C08K3/02—Elements
- C08K3/04—Carbon
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- C08K2201/001—Conductive additives
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- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C08K2201/004—Additives being defined by their length
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- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The present invention relates to a kind of sealing rings, belong to technical field of polymer materials.The sealing ring includes the ingredient of following parts by weight：Nitrile rubber：100 parts, carbon black：50 100 parts, modified carbon nano-tube：25 parts, organic zinc：28 parts, age resister：12 35 parts, vulcanizing agent：38 parts.The carbon black is the mixture of spray carbon black and carbon black N330.And it is formed by blanking, one section of mixing, two-stage mixing, processing and forming.The sealing ring of the present invention compounds on nitrile matrix and is added to modified carbon nano-tube, the carbon black of compounding makees reinforcing agent, and it is further added with machine zinc, the age resister of compounding, vulcanizing agent, it is made up of the simple processing technology of some, further increase wearability, the crush resistance of the comprehensive performance of sealing ring, especially sealing ring.
Description
Technical field
The present invention relates to a kind of sealing rings, belong to technical field of polymer materials.
Background technology
Sealing ring is very common very necessary part in life production, except the general requirement that should have sealing ring material
Outside, sealing ring is also noted that following requirement：High resilience and resilience；Mechanical strength appropriate, including tensile strength, elongation
Rate and tearing toughness etc.；Performance is stablized, and is not easy to be swollen in the medium, thermal pinch (Joule effect)；Easy processing is molded, and
It can keep accurate size；Do not corrode contact surface, not pollution medium etc..Meet the most suitable and most common material of above-mentioned requirements
Material is rubber, so sealing ring rubber material multi-purpose greatly is made.The selection of the various types of rubber, sealing ring material seals it
Performance and used life important in inhibiting.The performance of material directly affects the performance of sealing ring.And NBR nitrile rubber systems
At sealing ring be suitable for petroleum hydraulic oil, glycol system hydraulic oil, diester-based lubricating oil, gasoline, water, silicone grease, silicone oil
It is used in equal media, general use temperature range is -40~120 DEG C, is the rubber seal that current purposes is most wide, cost is minimum
Part.Those skilled in the art, which are also constantly dedicated to improving, improves nitrile rubber sealing ring.
Invention content
For the problems of prior art defect, provide one kind having preferable tear resistance, wearability, resists the present invention
The sealing ring of Squeezing ground.
The above-mentioned purpose of the present invention can be realized by following technical proposal：A kind of sealing ring, the sealing ring include
The ingredient of following parts by weight：
Nitrile rubber：100 parts
Carbon black：50-100 parts
Modified carbon nano-tube：2-5 parts
Organic zinc：2-8 parts
Age resister：12-35 parts
Vulcanizing agent：3-8 parts.
Carbon black (CB) has good conductive property, and has good strengthening action to rubber matrix as conductive filler, makes
Sealing ring obtained have preferable air-tightness, watertightness, pressure sealing, corrosion resistance, also have density it is small, elasticity it is good,
The advantages that performance is stable, cheap.Carbon black granularity is minimum, is filled in rubber matrix and is led by the secondary structure participation reunited
Electricity, for the electric conductivity of system by rubber matrix viscosity, the viscosity of rubber, polarity can also influence point of carbon black in mixing process
It dissipates.And the polarity of matrix and carbon blacksurface Electronic interactions and the compatibility and dispersibility of carbon black and matrix can be influenced
Energy.Nitrile rubber is polar rubber, and polarity carbochain and the carbon blacksurface polar molecule group of matrix attract each other to increase base
The compatibility of body and carbon black, carbon black pellet are attracted in matrix polar molecule chain.Increase with content of carbon black, in mixing process
The shear action that the secondary structure particle of carbon black is subject to constantly increases, and is also increased by the probability of failure by shear, causes the two of carbon black
Secondary structure breaking, so dispersion is evenly.Carbon nanotube be a diameter of 1-10nm, length be tens microns of even greater single layers
(single wall) or multilayer (multi wall) graphite cylinder.The chemical composition and atom combining form of carbon nanotube are simple, and single layer is six faces
Shape planar structure, radial is nano-scale, and draw ratio is big (100-1000), compound with regular structure, large specific surface area, and intensity is high, has
Preferable heat-resisting, the corrosion-resistant, heat shock resistance of graphite and self lubricity, biocompatibility, thermal conductance, electrical conductance.But carbon nanometer
Pipe assembles (entanglements) tendency and chemical inertness is strong, dispersibility in rubber and limits it in rubber with the bond properties difference of rubber
Application in glue need to carry out surface modification to carbon nanotube, improve dispersibility of the carbon nanotube in rubber.Sealing ring of the present invention
Middle carbon nanotube and carbon black and when as reinforcing agent, due to synergistic effect between the two, carbon nanotube and carbon black are in rubber-based
Become " grape cluster " structure of real meaning in body, wherein carbon nanotube is equivalent to " stalk " of " grape cluster ", and this structure can
It is efficiently modified the performance deficiency of sizing material when carbon nanotube or carbon black is applied alone, while reducing the resistance that sealing ring uses.By carbon modified
Nanotube (CNTs) is added in black-reinforced filling system nitrile rubber, is led to rubber vulcanization time lengthening, is improved the sulphur of sizing material
Change degree, can be improved the antistatic property of sizing material, and production antistatic property is excellent and the good rubber product of oil resistance.With
Modified CNTs dosages increase, and black-reinforced fills hardness, 100% stress at definite elongation and the tearing strength of system nitrile rubber in increase
Trend, tensile strength slowly decline, and elongation rate of tensile failure reduces.The dispersion performance of carbon black is in opposite trend in nitrile rubber, with
Content of carbon black increases and improves, therefore comprehensive each factor, and modified carbon nano-tube and carbon black are being used in compounding in sealing ring of the present invention
Under the action of making reinforcing agent, need to add 50-100 parts of carbon blacks and 2-5 parts of modified carbon nano-tubes.
In addition, zinc oxide is the vulcanizing agent of the traditional vulcanizing activator of rubber and certain specific rubbers, China rubber at present
Glue industry zinc oxide Year's consumption is estimated in 200,000 t or more.Common zinc oxide heavy metal zinc content is about 80%, and organic zinc zinc
Content can be reduced to 40% or lower.Compared with zinc oxide, organic zinc that the present invention selects has that good dispersion, density be small, sulphur
Change fireballing feature, and price is relatively low.Present invention organic zinc substitute common zinc oxide not only can with the feature of environmental protection of sealing ring,
Heavy metal zinc resource is saved, the wear-resisting property and ageing-resistant performance of sealing ring can also be significantly improved.
Preferably, the carbon black is the mixture of spray carbon black and carbon black N330, spray carbon black is with carbon black N330's
Mass ratio is 1-3:1.Spray carbon black has the spy that particle is big, structure is high, filler gum intensity is medium and is permanently deformed very little
Point, carbon black N330 are a kind of good carbon blacks of reinforcing property, can assign the preferable tensile property of sizing material, tear resistance, wear-resisting
Property and elasticity.Carbon black in the present invention is used in compounding spray carbon black and carbon black N330, further increases the strengthening action of carbon black, drop
The compression set of low sealing ring improves resistance to medium, tear resistance, wearability and the crush resistance of sealing ring.
Further preferably, the carbon black N330 is that maleic anhydride is grafted to carbon blacksurface modified carbon black N330.Carbon black
The graft modification on surface is to be grafted upper polymer chain in carbon blacksurface, since the polymer in the grafting of this method can be tied securely
It closes in carbon blacksurface, while stretching, extension provides enough repulsion in water, is reassembled between tissue particles.By chemical bond in carbon black
The upper macromolecular chain of particle surface grafting, and it is formed on its surface the macromolecule layer of package.The horse being grafted up by this method
Carbon blacksurface can be firmly bonded to by carrying out acid anhydrides, at the same be grafted on carbon blacksurface maleic anhydride amount than with carbon blacksurface knot
The high molecular amount closed is much larger, extensible to provide enough repulsion in water, to improve point of the carbon black in rubber matrix
Stability is dissipated, can also make that the interaction between carbon black and rubber can also be made to be enhanced.
Preferably, the modified carbon nano-tube is to be modified with dopamine cladding process.Coating modification carbon is received
Mitron has good dispersibility, promotes its reinforcing effect, improves the tensile strength and elongation rate of tensile failure of sealing ring composite material,
Improve its thermal stability.
Preferably, the age resister includes that light stabilizer, heat stabilizer, anti ultraviolet agent, antioxidant, rubber are anti-
It is one or more in aging agent.
Further preferably, the age resister is dioctyl sebacate (DOS), rubber antioxidant, antioxidant 445 are pressed
Mass ratio 15-30:1-2:1 mixture.
Preferably, the vulcanizing agent is sulphur, N, one kind in N '-penylene bismaleimide, peroxide
Or it is a variety of.Before sealing ring is uncured, lack good physical mechanical property, practical value is little.When through addition vulcanizing agent,
After vulcanization aid is vulcanized, due to the variation of molecular structure, and make its comprehensive notable modification, especially tensile strength, fixed
Stress, elongation, elasticity, wearability, hardness etc. is stretched to become apparent.And the vulcanizing agent being added also helps the solution of carbon nanotube
It twines.
Further preferably, sulphur and N in the vulcanizing agent, the mass ratio 1.5- of N '-penylene bismaleimide
2.5:1.Through testing, when vulcanizing agent selects sulphur and N, N '-penylene bismaleimide 1.5-2.5 in mass ratio:1 compounding
When, vulcanization effect is more preferable, which is because, N, N '-penylene bismaleimide conduct auxiliary vulcanizing agent, significantly improve association
Performance improves heat resistance, significantly reduces compression set, moreover it is possible to reduce the dosage of peroxide.
The present invention also provides a kind of processing method of above-mentioned sealing ring, the processing method include blanking, one section it is mixed
Refining, two-stage mixing, molding；
Blanking sequence is followed successively by nitrile rubber, organic zinc, age resister, carbon black, modified carbon nano-tube, vulcanizing agent.
One section of mixing carries out in mixer, rotor speed 40-45r.min-1, 35-38 DEG C of cooling water, pressure pressure 0.8-
1.2MPa, fill factor 0.65, slice parks 5-8h after dumping.Blanking control of the present invention m- power curve joint control when using
Preparation method, i.e. subsection charging use time control act.Last discharge uses power curve control methods, i.e., power rise arrives after oiling
Then maximum value declines and steadily carries out discharge after a certain period of time.
Two-stage mixing carries out in open mill, and roller temperature is 55-70 DEG C, mixing time 60-120s.
The molding can be compression molding, and upper mold temperature is 183-190 DEG C in compression molding, and lower die temperature is 178-
182 DEG C, molding time 120-180s.
The processing method further includes post-cure processing after compression molding, and the temperature of post-cure processing is 140-
160 DEG C, vulcanization time 60-100min.
Described is shaped to be injection moulded, and injection pressure is 1.52-1.82kN, sulfide stress 1.92- in injection moulding
2.05kN, vulcanization time 60-100s.It is handled using injection moulding vulcanization, sizing material has been fully warmed-up before injecting mold
And preplasticizing, good fluidity, be conducive to stabilize and increase product quality；Especially improve compactness, the precision size of sealing ring
Degree.
Compared with prior art, the present invention has the following advantages：
1, sealing ring of the invention compounds on nitrile matrix and is added to modified carbon nano-tube, the carbon black of compounding is mended
Strong agent, and it is further added with the comprehensive performance that machine zinc, the age resister of compounding, vulcanizing agent further increase sealing ring, especially
It is wearability, the crush resistance of sealing ring.
2, the processing technology of sealing ring of the present invention is simple and practicable, and the performance for further increasing sealing ring is kneaded by being segmented,
Forming method after especially two sections mixings can be selected to be molded also use and be injection moulded.Temperature appropriate and two in compression molding
Secondary vulcanizing treatment further increases the intensity of sealing ring, wearability.The good fluidity of sizing material in injection moulding, is conducive to improve close
The compactness of seal, and then improve wearability, the crush resistance of sealing ring.
Specific implementation method
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention be more clearly understood, in conjunction with implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.
Table 1：The ingredient and its parts by weight of sealing ring in embodiment
Embodiment 1
Blanking：Raw material is weighed by the raw material described in 1 embodiment 1 of table, blanking successively in the following order：Nitrile rubber has
Machine zinc, age resister, carbon black, modified carbon nano-tube, vulcanizing agent.
One section of mixing：One section of mixing carries out in mixer, rotor speed 42r.min-1, 36 DEG C of cooling water, pressure pressure
1.0MPa, fill factor 0.65, slice parks 6h after dumping.
Two-stage mixing：Two-stage mixing carries out in open mill, and roller temperature is 65 DEG C, mixing time 100s.
Molding：Sealing ring of the present invention is obtained by injection moulding vulcanization, injection pressure is 1.65kN, vulcanization pressure in injection moulding
Power is 1.98kN, vulcanization time 80s.
Embodiment 2
With differing only in for embodiment 1, it is shaped in the present embodiment through compression molding, upper mold temperature in compression molding
It it is 187 DEG C, lower die temperature is 180 DEG C, molding time 150s；Post-cure processing, post-cure processing are carried out after compression molding
Temperature be 150 DEG C, vulcanization time 80min.
Embodiment 3
Blanking：Raw material is weighed by the raw material described in 1 embodiment 3 of table, blanking successively in the following order：Nitrile rubber has
Machine zinc, age resister, carbon black, modified carbon nano-tube, vulcanizing agent.
One section of mixing：One section of mixing carries out in mixer, rotor speed 43r.min-1, 37 DEG C of cooling water, pressure pressure
0.9MPa, fill factor 0.65, slice parks 7h after dumping.
Two-stage mixing：Two-stage mixing carries out in open mill, and roller temperature is 68 DEG C, mixing time 80s.
Molding：Sealing ring of the present invention is obtained by injection moulding vulcanization, injection pressure is 1.7kN, vulcanization pressure in injection moulding
Power is 2.02kN, vulcanization time 70s.
Embodiment 4
With differing only in for embodiment 3, it is shaped in the present embodiment through compression molding, upper mold temperature in compression molding
It it is 188 DEG C, lower die temperature is 180 DEG C, molding time 160s；Post-cure processing, post-cure processing are carried out after compression molding
Temperature be 145 DEG C, vulcanization time 90min.
Embodiment 5
Blanking：Raw material is weighed by the raw material described in 1 embodiment 5 of table, blanking successively in the following order：Nitrile rubber has
Machine zinc, age resister, carbon black, modified carbon nano-tube, vulcanizing agent.
One section of mixing：One section of mixing carries out in mixer, rotor speed 44r.min-1, 36 DEG C of cooling water, pressure pressure
1.1MPa, fill factor 0.65, slice parks 6h after dumping.
Two-stage mixing：Two-stage mixing carries out in open mill, and roller temperature is 60 DEG C, mixing time 70s.
Molding：Sealing ring of the present invention is obtained by injection moulding vulcanization, injection pressure is 1.58kN, vulcanization pressure in injection moulding
Power is 1.96kN, vulcanization time 95s.
Embodiment 6
With differing only in for embodiment 5, it is shaped in the present embodiment through compression molding, upper mold temperature in compression molding
It it is 184 DEG C, lower die temperature is 179 DEG C, molding time 170s；Post-cure processing, post-cure processing are carried out after compression molding
Temperature be 155 DEG C, vulcanization time 70min.
Embodiment 7
Blanking：Raw material is weighed by the raw material described in 1 embodiment 7 of table, blanking successively in the following order：Nitrile rubber has
Machine zinc, age resister, carbon black, modified carbon nano-tube, vulcanizing agent.
One section of mixing：One section of mixing carries out in mixer, rotor speed 41r.min-1, 37 DEG C of cooling water, pressure pressure
1.0MPa, fill factor 0.65, slice parks 7h after dumping.
Two-stage mixing：Two-stage mixing carries out in open mill, and roller temperature is 58 DEG C, mixing time 100s.
Molding：Sealing ring of the present invention is obtained by injection moulding vulcanization, injection pressure is 1.78kN, vulcanization pressure in injection moulding
Power is 2.02kN, vulcanization time 65s.
Embodiment 8
With differing only in for embodiment 7, it is shaped in the present embodiment through compression molding, upper mold temperature in compression molding
It it is 185 DEG C, lower die temperature is 181 DEG C, molding time 130s；Post-cure processing, post-cure processing are carried out after compression molding
Temperature be 148 DEG C, vulcanization time 95min.
Embodiment 9
Blanking：Raw material is weighed by the raw material described in 1 embodiment 9 of table, blanking successively in the following order：Nitrile rubber has
Machine zinc, age resister, carbon black, modified carbon nano-tube, vulcanizing agent.
One section of mixing：One section of mixing carries out in mixer, rotor speed 40r.min-1, 38 DEG C of cooling water, pressure pressure
0.8MPa, fill factor 0.65, slice parks 8h after dumping.
Two-stage mixing：Two-stage mixing carries out in open mill, and roller temperature is 55 DEG C, mixing time 120s.
Molding：Sealing ring of the present invention is obtained by injection moulding vulcanization, injection pressure is 1.52kN, vulcanization pressure in injection moulding
Power is 1.92kN, vulcanization time 100s.
Embodiment 10
With differing only in for embodiment 9, it is shaped in the present embodiment through compression molding, upper mold temperature in compression molding
It it is 190 DEG C, lower die temperature is 182 DEG C, molding time 120s；Post-cure processing, post-cure processing are carried out after compression molding
Temperature be 160 DEG C, vulcanization time 60min.
Embodiment 11
Blanking：Raw material is weighed by the raw material described in 1 embodiment 11 of table, blanking successively in the following order：Nitrile rubber has
Machine zinc, age resister, carbon black, modified carbon nano-tube, vulcanizing agent.
One section of mixing：One section of mixing carries out in mixer, rotor speed 45r.min-1, 35 DEG C of cooling water, pressure pressure
1.2MPa, fill factor 0.65, slice parks 5h after dumping.
Two-stage mixing：Two-stage mixing carries out in open mill, and roller temperature is 70 DEG C, mixing time 60s.
Molding：Sealing ring of the present invention is obtained by injection moulding vulcanization, injection pressure is 1.82kN, vulcanization pressure in injection moulding
Power is 2.05kN, vulcanization time 60s.
Embodiment 12
With differing only in for embodiment 11, it is shaped in the present embodiment through compression molding, upper mold temperature in compression molding
Degree is 183 DEG C, and lower die temperature is 178 DEG C, molding time 180s；Post-cure processing is carried out after compression molding, at post-cure
The temperature of reason is 140 DEG C, vulcanization time 100min.
Comparative example 1
For common commercially available sealing ring in the prior art.
Comparative example 2
With differing only in for embodiment 1, modified carbon nano-tube is not added in the comparative example.
Comparative example 3
With differing only in for embodiment 1, carbon black is not added in the comparative example.
Sealing ring in embodiment 1-12 and comparative example 1-3 is tested for the property, test result is as shown in table 2.
Table 2：The performance test of embodiment 1-12 and the sealing ring in comparative example 1-3
In conclusion by comparative example 1-12 and comparative example 1-3 it is found that sealing ring compatibility of the present invention is reasonable, processing
Simple for process, the sealing ring processed has preferable intensity, wearability, crush resistance.Pass through comparative example embodiment 1
With embodiment 2, embodiment 3 and embodiment 4, embodiment 5 and embodiment 6, embodiment 7 and embodiment 8, embodiment 9 and embodiment
10, embodiment 11, it is found that by being injection moulded after two-stage mixing, improves the mobility of sizing material, favorably with embodiment 12
In the compactness for improving sealing ring, and then improve wearability, the crush resistance of sealing ring.Pass through comparative example 1 and embodiment
3, embodiment 1 and embodiment 5, embodiment 1 and embodiment 7, embodiment 1 and embodiment 9, embodiment 1 with embodiment 11 it is found that this
Invention sealing ring compatibility is reasonable, be especially added to modified carbon nano-tube, the carbon black of compounding, compounding age resister, compounding
Vulcanizing agent further improves the comprehensive performance of sealing ring.
Specific embodiment described in the present invention is only an illustration of the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
It is skilled to this field although present invention has been described in detail and some specific embodiments have been cited
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (5)
1. a kind of sealing ring, which is characterized in that the sealing ring includes the ingredient of following parts by weight：
Nitrile rubber：100 parts
Carbon black：50-100 parts
Modified carbon nano-tube：2-5 parts
Organic zinc：2-8 parts
Age resister：12-35 parts
Vulcanizing agent：3-8 parts；
The carbon black is the mixture of spray carbon black and carbon black N330, and the mass ratio of spray carbon black and carbon black N330 are 1-3:1；
The carbon black N330 is that maleic anhydride is grafted to carbon blacksurface modified carbon black N330；The modified carbon nano-tube is with more
Bar amine cladding process is modified；The age resister is dioctyl sebacate, rubber antioxidant, antioxidant 445 are pressed
Mass ratio 15-30:1-2:1 mixture；The vulcanizing agent is sulphur and N, and N '-penylene bismaleimide is in mass ratio
1.5-2.5:1 mixture.
2. a kind of processing method of sealing ring as described in claim 1, which is characterized in that under the processing method includes
Material, one section of mixing, two-stage mixing, molding, blanking sequence are followed successively by nitrile rubber, organic zinc, age resister, carbon black, carbon modified
Nanotube, vulcanizing agent；One section of mixing carries out in mixer, rotor speed 40-45r.min-1, 35-38 DEG C of cooling water, pressure pressure
Power 0.8-1.2MPa, fill factor 0.65, slice parks 5-8h after dumping；Two-stage mixing carries out in open mill, roller temperature 55-
70 DEG C, mixing time 60-120s.
3. the processing method of sealing ring according to claim 2, which is characterized in that described is shaped to compression molding, mould
Molded middle upper mold temperature is 183-190 DEG C, and lower die temperature is 178-182 DEG C, molding time 120-180s.
4. the processing method of sealing ring according to claim 3, which is characterized in that after compression molding further include secondary sulphur
Change is handled, and the temperature of post-cure processing is 140-160 DEG C, vulcanization time 60-100min.
5. the processing method of sealing ring according to claim 2, which is characterized in that described is shaped to be injection moulded, note
It is 1.52-1.82kN, sulfide stress 1.92-2.05kN, vulcanization time 60-100s to penetrate injection pressure in molding.
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| CN109627516A (en) * | 2018-11-21 | 2019-04-16 | 宁波旭泰橡胶工业有限公司 | A kind of sealing ring |
| CN109535510A (en) * | 2018-11-21 | 2019-03-29 | 宁波旭泰橡胶工业有限公司 | A kind of sealing ring |
| CN109942918A (en) * | 2019-04-02 | 2019-06-28 | 合肥核舟电子科技有限公司 | A kind of high-frequency electromagnetic valve nitrile rubber gasket and preparation method thereof |
| CN115286850B (en) * | 2022-08-31 | 2023-12-08 | 宁波纽兰得轴承有限公司 | Rubber material for bearing sealing element and preparation method thereof |
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| CN1554693A (en) * | 2003-12-26 | 2004-12-15 | 江汉石油钻头股份有限公司 | Modified hydrogenated nitrile-butadiene rubber and its preparing method |
| CN102321279A (en) * | 2011-09-29 | 2012-01-18 | 北京化工大学 | Dopamine modified carbon nanotube/rubber composite material and preparation method thereof |
| CN104945702A (en) * | 2015-05-21 | 2015-09-30 | 青岛科凯达橡塑有限公司 | High-performance electric-conducting rubber material for aerospace, and preparation method and application thereof |
| CN105524313A (en) * | 2016-01-28 | 2016-04-27 | 青岛科技大学 | High/low-temperature-resistant NBR (nitrile butadiene rubber) |
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| JP2010254744A (en) * | 2009-04-21 | 2010-11-11 | Fujikura Rubber Ltd | Rubber composition, electroconductive rubber layer containing the same, method for forming the layer, electric double layer capacitor equipped with the layer, and electroconductive laminate equipped with the layer |
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| CN1554693A (en) * | 2003-12-26 | 2004-12-15 | 江汉石油钻头股份有限公司 | Modified hydrogenated nitrile-butadiene rubber and its preparing method |
| CN102321279A (en) * | 2011-09-29 | 2012-01-18 | 北京化工大学 | Dopamine modified carbon nanotube/rubber composite material and preparation method thereof |
| CN104945702A (en) * | 2015-05-21 | 2015-09-30 | 青岛科凯达橡塑有限公司 | High-performance electric-conducting rubber material for aerospace, and preparation method and application thereof |
| CN105524313A (en) * | 2016-01-28 | 2016-04-27 | 青岛科技大学 | High/low-temperature-resistant NBR (nitrile butadiene rubber) |
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