CN106750651A - A kind of heat-resistant antifriction seal ring rubber material and preparation method thereof - Google Patents
A kind of heat-resistant antifriction seal ring rubber material and preparation method thereof Download PDFInfo
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- CN106750651A CN106750651A CN201611156332.4A CN201611156332A CN106750651A CN 106750651 A CN106750651 A CN 106750651A CN 201611156332 A CN201611156332 A CN 201611156332A CN 106750651 A CN106750651 A CN 106750651A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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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
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention discloses a kind of heat-resistant antifriction seal ring rubber material, its raw material includes：Nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber, modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, carbon black, fine particle calcium carbonate, zinc oxide, stearic acid, oleic acid diethanol amine borate, drying oil alkyd resin, 2 mercaptan ylmethylbenzimidazole zinc salts, anti-aging agent RD, diphenylguanidine, altax, accelerator TT, sulphur, vulcanization aid, dibutyl phthalate, Methyl Hydrogen Polysiloxane Fluid.The seal ring rubber material has good heat resistance, wearability and excellent weather resistance, long service life, and production efficiency is high, low cost.
Description
Technical field
The present invention relates to technical field of rubber material, particularly a kind of heat-resistant antifriction seal ring rubber material and its preparation side
Method.
Background technology
Sealing ring is the sealing original paper commonly used on automobile, is mainly used in static seal and reciprocating movement sealing.Automobile fuel pump
In the seal commonly used be sealing ring, sealing ring has good sealing property, wide using scope, therefore in the design of automobile
More and more applied.The selection of sealing ring material to its sealing property and service life important in inhibiting, material
Performance directly affects the performance of sealing ring.It is low and easy to be old generally to there is strength character in the material of sealing ring of the prior art
The defect of change, thus the serious shadow service life of sealing ring.
Sealing ring is the integrated application of material mechanical performance, chemical property, to ensure that sealing ring has the permanent use longevity
Life and good sealing property, when sealing ring is selected, first have to avoid producing strength failure and face deformation, it is therefore necessary to select
Select the material with certain anti-wear performance.It is simultaneously to prevent the continuous expanded by heating of sealing ring, its stress to should be greater than the license of material
Stress, it is therefore necessary to material of the selection with heat resistance.Additionally, stretching, compression stress still to keep sealing position
Relaxation property stability, makes the sealing property of sealing ring keep stabilization, and encapsulant must have good weather resistance.
The content of the invention
Based on the problem that background technology is present, the present invention proposes a kind of heat-resistant antifriction seal ring rubber material and its preparation
Method, the seal ring rubber material has good heat resistance, wearability and an excellent weather resistance, long service life,
And production efficiency is high, low cost.
A kind of heat-resistant antifriction seal ring rubber material proposed by the present invention, its raw material includes by weight：Nitrile rubber 75-
90 parts, polybutadiene rubber 20-40 parts, ethylene propylene diene rubber 20-40 parts, modified molybdenum disulfide 5-10 parts, polytetrafluoroethylene (PTFE) 6-
12 parts, short glass fiber 3-10 parts, carbon black 6-12 parts, fine particle calcium carbonate 4-10 parts, zinc oxide 2-5 parts, stearic acid 0.5-1 parts, oleic acid
0.4-0.6 parts of diethanol amine borate, drying oil alkyd resin 3-5 parts, 2- mercaptan ylmethylbenzimidazole zinc salts 0.8-1.2
Part, anti-aging agent RD 0.1-0.3 parts, diphenylguanidine 0.2-0.4 parts, altax 0.3-0.6 parts, accelerator TT 0.2-0.4
Part, sulphur 0.1-0.3 parts, vulcanization aid 0.1-0.3 parts, dibutyl phthalate 0.5-1 parts, Methyl Hydrogen Polysiloxane Fluid 3-10
Part；
The preparation method of the modified molybdenum disulfide includes：By MoS2Particle diameter is ground to for 20-40 mesh, ethanol stirring is added
Uniformly, CTAB and PEG is sequentially added, 70-85 DEG C is warming up to, 20-24h is stirred, after standing 10-12h, suction filtration, washing, vacuum is done
It is dry, obtain the modified molybdenum disulfide.
In a specific embodiment, the weight portion of nitrile rubber can be 76,78,80,82,84,86,88；Polybutadiene
The weight portion of rubber can be 21,23,25,27,29,31,33,35,37,39 parts；The weight portion of ethylene propylene diene rubber can be
21st, 23,25,27,29,31,33,35,37,39 parts；The weight portion of modified molybdenum disulfide can for 6.5,7.2,7.9,8.3,
8.8、9.1、9.7；The weight portion of polytetrafluoroethylene (PTFE) can for 6.5,7.2,7.9,8.3,8.8,9.1,9.7,10.3,10.8,
11.5；The weight portion of short glass fiber can be 3.7,4.5,5.2,5.9,6.3,6.8,7.1,8.7,9.3,9.8；Carbon black
Weight portion can be 6.5,7.2,7.9,8.3,8.8,9.1,9.7,10.3,10.8,11.5；The weight portion of fine particle calcium carbonate can for 4.5,
5.2、5.9、6.3、6.8、7.1、8.7、9.3、9.8；The weight portion of zinc oxide can for 2.2,2.3,2.5,2.7,2.8,3.3,
3.6、3.8、4.3、4.5、4.7；Stearic weight portion can for 0.52,0.58,0.61,0.67,0.72,0.78,0.74,
0.88、0.95。
Preferably, MoS2, CTAB, PEG weight proportion be 100:5-10:10-20.
Preferably, the nitrile rubber is made up of nitrile rubber 2707 and nitrile rubber 6240, the He of nitrile rubber 2707
The weight proportion of nitrile rubber 6240 is 6-8:1.
Preferably, the carbon black is made up of carbon black N330 and carbon black N550, and the weight of carbon black N330 and carbon black N550 is matched somebody with somebody
Than being 1:3-5.
Preferably, the vulcanization aid is made up of metal oxide and adjuvant；Preferably, the vulcanization aid be by
Zinc oxide and 2- mercaptoimidazolines are constituted, and the weight proportion of zinc oxide and 2- mercaptoimidazolines is 1：0.8-1.
Preferably, nitrile rubber, polybutadiene rubber, the weight proportion of ethylene propylene diene rubber is：80-85:25-30:30-
35。
Preferably, described heat-resistant antifriction seal ring rubber material, its raw material includes by weight：Nitrile rubber 80-85
Part, polybutadiene rubber 25-35 parts, ethylene propylene diene rubber 30-35 parts, modified molybdenum disulfide 7-9 parts, polytetrafluoroethylene (PTFE) 8-10
Part, short glass fiber 5-8 parts, carbon black 8-10 parts, fine particle calcium carbonate 6-8 parts, zinc oxide 3-4 parts, stearic acid 0.7-0.9 parts, oleic acid two
0.4-0.5 parts of monoethanolamine borate, drying oil alkyd resin 4-5 parts, 0.9-1.1 parts of 2- mercaptan ylmethylbenzimidazole zinc salt,
Anti-aging agent RD 0.1-0.2 parts, diphenylguanidine 0.3-0.4 parts, altax 0.4-0.5 parts, 0.3-0.4 parts of accelerator TT, sulphur
Sulphur 0.2-0.3 parts, vulcanization aid 0.1-0.2 parts, dibutyl phthalate 0.7-0.9 parts, Methyl Hydrogen Polysiloxane Fluid 5-8 parts.
The invention allows for a kind of preparation method of above-mentioned heat-resistant antifriction seal ring rubber material, comprise the following steps：
S1, will plasticate in nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury it is uniform after, then successively
Add modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid, oleic acid diethanol amine boric acid
Ester, drying oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, dibutyl phthalate, first
Base containing hydrogen silicone oil, mixing is uniform, discharge, and cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax,
Accelerator TT, mixing is uniform, slice, cooling, obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, is vulcanized, vulcanization is cooled to room temperature after terminating,
The demoulding obtains the heat-resistant antifriction seal ring rubber material.
Preferably, the preparation method of the heat-resistant antifriction seal ring rubber material, comprises the following steps：
In S1, will be plasticated at 60-80 DEG C in nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury
After 35-45min, sequentially add modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid,
Oleic acid diethanol amine borate, drying oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, adjacent benzene
Dibutyl carboxylic acid, Methyl Hydrogen Polysiloxane Fluid, in 15-25min is kneaded at 70-100 DEG C, discharge, cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax,
Accelerator TT, kneads 10-20min at 35-55 DEG C, and slice, cooling obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, 30-40min is vulcanized at 175-195 DEG C, cooled down
To room temperature, the demoulding obtains the heat-resistant antifriction seal ring rubber material.
In the present invention, used cooperatively using nitrile rubber, polybutadiene rubber and ethylene propylene diene rubber, not only intersolubility
It is good, heat resistance, cohesive force, rigidity and the degree of cross linking of sizing material are further improved, the polarity of resulting product, elastic and adhesive property are excellent
It is different；Nitrile rubber has excellent elasticity, oil resistivity, media-resistant and fatigue durability in itself, and coordinating with epoxy natural rubber makes
With the heat resistance of sealing ring, ageing-resistant performance can be made to be significantly improved；And the fourth of a certain proportion of different acrylonitrile contents
Nitrile rubber 2707 and it is used in combination with nitrile rubber 6240, the heat resistance and medium-resistance of rubber itself can be improved, and to greatest extent
Ensure that sealing, the weatherability of sealing ring material；Be modified the molybdenum bisuphide for obtaining by CTAB and PEG, due to MoS2It is micro-
Grain surface is presented negative electrical charge, after the CTAB addition systems with cation group, necessarily changes with the presence of sulfur-rich adsorption layer, surface
MoS2The charging property of microparticle surfaces, this amphiphile, amphiphilic molecule is with its polar group towards solid, and the surface of solids with adsorption layer is exposed
Go out be it is hydrocarbon wait lipophilic group, form good compatibility with the base-material such as nitrile rubber；At the same time modifying agent is also used
Polyethylene glycol (PEG), comprises only two kinds of hydrophilic groups of hydroxyl and ether and without hydrophobic group, can be attracted to and be divided in its molecular formula
Scattered MoS2Particle surface, foring one layer has stronger " steric hindrance " effect macromolecular hydrophilic film, can further increase
Big MoS2Intergranular repulsive energy, the dispersiveness and stability of enhancing system, and cut the organic macromolecule chain by means of high concentration
To MoS2Particle carries out coating modification, makes MoS2Each particle be in the state of relative insulation, MoS2 particles can be suppressed
Agglomeration；By the composite modified molybdenum bisuphide for obtaining of above two modifying agent, butyronitrile can be dispersed in micro-meter scale
In the base-material of rubber etc., remain its distinctive lamellar structure, so can significantly increase sealing ring anti-wear performance and other
Mechanical property；Additionally, being also added into a certain proportion of carbon black N330 in the present invention and carbon black N550 is used in mixed way and controls both
Addition, it is ensured that the elasticity of sealing ring material, it is ensured that stretching, the compress stress relaxation of material are in a rational scope
It is interior, the sealing property of product is changed over time without significant change, increase the service life；Add polytetrafluoroethylene (PTFE) and staple glass
The reinforcing filler of fiber, further increases anti-wear performance of the invention, lowers cost of the invention, and in elastomeric material
Supporting structure is formed, such that it is able to further improve the mechanical performance and heat resistance of product；Stearic acid, zinc oxide can be improved
The physical mechanics property of curing efficiency, the heat resistance of raising sealing ring material and improvement sealing member material during the vulcanization of rubber
Energy；It is anti-that the short vulcanization system being made up of sulphur, diphenylguanidine, altax, accelerator TT makes the strand of base-material play crosslinking
Should, linear molecule is formed space network, plasticity reduction, elastic strength increase, and material is in preparation process
The sulfidization molding time is greatly shortened, and mechanical property is greatly improved after vulcanization；The 2- mercaptan ylmethylbenzimidazole zinc salts of addition and
P phenylenediamine type antioxidant RD, can form continuous macromolecular protecting film on vulcanizate surface, improve the decay resistance of material；
Add sulphur as vulcanizing agent, be consequently formed a kind of efficient vulcanization system, reversion resistance is good, and vulcanization is uniform, it is adaptable to
Thick product vulcanizes, and the vulcanizate for obtaining also has good heat resistance and compression resistant morphotropism；A certain proportion of zinc oxide and 2-
The vulcanization aid system that mercaptoimidazoline is formed, it can suppress with the appropriate reaction such as nitrile rubber and polybutadiene rubber
The change of the cross-linked form in high temperature atmosphere, the cut-out of polymer chain, with being also difficult to produce even for long-term heat ageing
The effect of physical property reduction；Coumarone indene resin and dibutyl phthalate are used as plasticizer, can improve plasticity of the present invention,
Temperature when material viscosity and mixing is reduced, improves dispersiveness and Combination；Using Methyl Hydrogen Polysiloxane Fluid class plasticizer, can carry
For good processing characteristics.
In the present invention, according to the heat-resistant antifriction seal ring rubber material that above-mentioned formula and preparation method are made, can meet close
The production domesticization of seal material, with good heat resistance and excellent wearability, sealing and mechanical property, while using the longevity
Life length, and production efficiency is high, low cost.
Specific embodiment
Technical scheme is described in detail below by specific embodiment.
Embodiment 1
A kind of heat-resistant antifriction seal ring rubber material, its raw material includes by weight：75 parts of nitrile rubber, polybutadiene rubber
40 parts of glue, 20 parts of ethylene propylene diene rubber, 10 parts of modified molybdenum disulfide, 6 parts of polytetrafluoroethylene (PTFE), 10 parts of short glass fiber, carbon black 6
Part, 10 parts of fine particle calcium carbonate, 2 parts of zinc oxide, 1 part of stearic acid, 0.4 part of oleic acid diethanol amine borate, 5 parts of drying oil alkyd resin, 2-
0.8 part of mercaptan ylmethylbenzimidazole zinc salt, 0.3 part of anti-aging agent RD, 0.2 part of diphenylguanidine, 0.6 part of altax promotes
0.2 part of agent TT, 0.3 part of sulphur, 0.1 part of vulcanization aid, 1 part of dibutyl phthalate, 3 parts of Methyl Hydrogen Polysiloxane Fluid；
The preparation method of the modified molybdenum disulfide includes：By MoS2Particle diameter is ground to for 20 mesh, adds ethanol stirring equal
It is even, CTAB and PEG is sequentially added, 85 DEG C are warming up to, 20h is stirred, after standing 12h, suction filtration, washing, vacuum drying obtains described
Modified molybdenum disulfide, MoS2, CTAB, PEG weight proportion be 100:5:20；
The nitrile rubber is made up of nitrile rubber 2707 and nitrile rubber 6240, nitrile rubber 2707 and nitrile rubber
6240 weight proportion is 6:1；The carbon black is made up of carbon black N330 and carbon black N550, the weight of carbon black N330 and carbon black N550
Amount proportioning is 1:5；The vulcanization aid be by weight proportion be 1:0.8 zinc oxide and 2- mercaptoimidazolines composition；
In the present embodiment 1, the preparation method of above-mentioned heat-resistant antifriction seal ring rubber material comprises the following steps：
In S1, will be plasticated at 60 DEG C in nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury
After 45min, modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid, oil are sequentially added
Sour diethanol amine borate, drying oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, adjacent benzene two
Formic acid dibutyl ester, Methyl Hydrogen Polysiloxane Fluid, in 25min is kneaded at 70 DEG C, discharge, cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax,
Accelerator TT, kneads 20min at 35 DEG C, and slice, cooling obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, 40min is vulcanized at 175 DEG C, be cooled to room temperature,
The demoulding, obtains the heat-resistant antifriction seal ring rubber material.
Embodiment 2
A kind of heat-resistant antifriction seal ring rubber material, its raw material includes by weight：90 parts of nitrile rubber, polybutadiene rubber
20 parts of glue, 40 parts of ethylene propylene diene rubber, 5 parts of modified molybdenum disulfide, 12 parts of polytetrafluoroethylene (PTFE), 3 parts of short glass fiber, carbon black 12
Part, 4 parts of fine particle calcium carbonate, 5 parts of zinc oxide, 0.5 part of stearic acid, 0.6 part of oleic acid diethanol amine borate, 3 parts of drying oil alkyd resin, 2-
1.2 parts of mercaptan ylmethylbenzimidazole zinc salt, 0.1 part of anti-aging agent RD, 0.4 part of diphenylguanidine, 0.3 part of altax promotes
0.4 part of agent TT, 0.1 part of sulphur, 0.3 part of vulcanization aid, 0.5 part of dibutyl phthalate, 10 parts of Methyl Hydrogen Polysiloxane Fluid；
The preparation method of the modified molybdenum disulfide includes：By MoS2Particle diameter is ground to for 40 mesh, adds ethanol stirring equal
It is even, CTAB and PEG is sequentially added, 70 DEG C are warming up to, 24h is stirred, after standing 10h, suction filtration, washing, vacuum drying obtains described
Modified molybdenum disulfide, MoS2, CTAB, PEG weight proportion be 100:10:10；
The nitrile rubber is made up of nitrile rubber 2707 and nitrile rubber 6240, nitrile rubber 2707 and nitrile rubber
6240 weight proportion is 8:1；The carbon black is made up of carbon black N330 and carbon black N550, the weight of carbon black N330 and carbon black N550
Amount proportioning is 1:3；The vulcanization aid be by weight proportion be 1:1 zinc oxide and 2- mercaptoimidazolines composition；
In the present embodiment 2, the preparation method of above-mentioned heat-resistant antifriction seal ring rubber material comprises the following steps：
In S1, will be plasticated at 80 DEG C in nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury
After 35min, modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid, oil are sequentially added
Sour diethanol amine borate, drying oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, adjacent benzene two
Formic acid dibutyl ester, Methyl Hydrogen Polysiloxane Fluid, in 15min is kneaded at 100 DEG C, discharge, cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax,
Accelerator TT, kneads 10min at 55 DEG C, and slice, cooling obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, 30min is vulcanized at 195 DEG C, be cooled to room temperature,
The demoulding, obtains the heat-resistant antifriction seal ring rubber material.
Embodiment 3
A kind of heat-resistant antifriction seal ring rubber material, its raw material includes by weight：80 parts of nitrile rubber, polybutadiene rubber
35 parts of glue, 30 parts of ethylene propylene diene rubber, 9 parts of modified molybdenum disulfide, 8 parts of polytetrafluoroethylene (PTFE), 8 parts of short glass fiber, carbon black 8
Part, 8 parts of fine particle calcium carbonate, 3 parts of zinc oxide, 0.9 part of stearic acid, 0.4 part of oleic acid diethanol amine borate, 5 parts of drying oil alkyd resin, 2-
0.9 part of mercaptan ylmethylbenzimidazole zinc salt, 0.2 part of anti-aging agent RD, 0.3 part of diphenylguanidine, 0.5 part of altax promotes
0.3 part of agent TT, 0.3 part of sulphur, 0.1 part of vulcanization aid, 0.9 part of dibutyl phthalate, 5 parts of Methyl Hydrogen Polysiloxane Fluid；
The preparation method of the modified molybdenum disulfide includes：By MoS2Particle diameter is ground to for 30 mesh, adds ethanol stirring equal
It is even, CTAB and PEG is sequentially added, 75 DEG C are warming up to, 22h is stirred, after standing 11h, suction filtration, washing, vacuum drying obtains described
Modified molybdenum disulfide, MoS2, CTAB, PEG weight proportion be 100:7:15；
The nitrile rubber is made up of nitrile rubber 2707 and nitrile rubber 6240, nitrile rubber 2707 and nitrile rubber
6240 weight proportion is 7:1；The carbon black is made up of carbon black N330 and carbon black N550, the weight of carbon black N330 and carbon black N550
Amount proportioning is 1:4；The vulcanization aid be by weight proportion be 1:0.9 zinc oxide and 2- mercaptoimidazolines composition；
In the present embodiment 3, the preparation method of above-mentioned heat-resistant antifriction seal ring rubber material comprises the following steps：
In S1, will be plasticated at 70 DEG C in nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury
After 40min, modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid, oil are sequentially added
Sour diethanol amine borate, drying oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, adjacent benzene two
Formic acid dibutyl ester, Methyl Hydrogen Polysiloxane Fluid, in 20min is kneaded at 85 DEG C, discharge, cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax,
Accelerator TT, kneads 15min at 45 DEG C, and slice, cooling obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, 35min is vulcanized at 185 DEG C, be cooled to room temperature,
The demoulding, obtains the heat-resistant antifriction seal ring rubber material.
Embodiment 4
A kind of heat-resistant antifriction seal ring rubber material, its raw material includes by weight：85 parts of nitrile rubber, polybutadiene rubber
25 parts of glue, 35 parts of ethylene propylene diene rubber, 7 parts of modified molybdenum disulfide, 10 parts of polytetrafluoroethylene (PTFE), 5 parts of short glass fiber, carbon black 10
Part, 6 parts of fine particle calcium carbonate, 4 parts of zinc oxide, 0.7 part of stearic acid, 0.5 part of oleic acid diethanol amine borate, 4 parts of drying oil alkyd resin, 2-
1.1 parts of mercaptan ylmethylbenzimidazole zinc salt, 0.1 part of anti-aging agent RD, 0.4 part of diphenylguanidine, 0.4 part of altax promotes
0.4 part of agent TT, 0.2 part of sulphur, 0.2 part of vulcanization aid, 0.7 part of dibutyl phthalate, 8 parts of Methyl Hydrogen Polysiloxane Fluid；
The preparation method of the modified molybdenum disulfide includes：By MoS2Particle diameter is ground to for 30 mesh, adds ethanol stirring equal
It is even, CTAB and PEG is sequentially added, 80 DEG C are warming up to, 23h is stirred, after standing 11h, suction filtration, washing, vacuum drying obtains described
Modified molybdenum disulfide, MoS2, CTAB, PEG weight proportion be 100:8:13；
The nitrile rubber is made up of nitrile rubber 2707 and nitrile rubber 6240, nitrile rubber 2707 and nitrile rubber
6240 weight proportion is 7:1；The carbon black is made up of carbon black N330 and carbon black N550, the weight of carbon black N330 and carbon black N550
Amount proportioning is 1:4；The vulcanization aid be by weight proportion be 1:0.9 zinc oxide and 2- mercaptoimidazolines composition；
In the present embodiment 4, the preparation method of above-mentioned heat-resistant antifriction seal ring rubber material comprises the following steps：
In S1, will be plasticated at 75 DEG C in nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury
After 42min, modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid, oil are sequentially added
Sour diethanol amine borate, drying oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, adjacent benzene two
Formic acid dibutyl ester, Methyl Hydrogen Polysiloxane Fluid, in 22min is kneaded at 90 DEG C, discharge, cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax,
Accelerator TT, kneads 16min at 40 DEG C, and slice, cooling obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, 32min is vulcanized at 190 DEG C, be cooled to room temperature,
The demoulding, obtains the heat-resistant antifriction seal ring rubber material.
Heat-resistant antifriction seal ring rubber material described in above-described embodiment 1-4 is carried out into performance test, it is as a result as follows：
Respectively according to DIN53505, ISO 48, DIN53504-2, ISO 815-B, DIN 53508, ISO 1817 and
The testing standard of DIN 53509 is to the hardness of product, tensile strength, elongation at break, buckling, anti-aging, media-resistant, low temperature resistant
And ozone resistance is tested, as a result it is as shown in the table：
According to the heat-resistant antifriction seal ring rubber material that above-mentioned formula and preparation method are made, sealing ring material can be met
Production domesticization, with good heat resistance and excellent wearability, sealing and mechanical property, while long service life, and it is raw
Produce efficiency high, low cost.
In embodiment 1-4, used cooperatively using nitrile rubber, polybutadiene rubber and ethylene propylene diene rubber, not only mutually
Dissolubility is good, further improves heat resistance, cohesive force, rigidity and the degree of cross linking of sizing material, the polarity of resulting product, elastic and caking property
Can be excellent；Nitrile rubber has excellent elasticity, oil resistivity, media-resistant and fatigue durability in itself, matches somebody with somebody with epoxy natural rubber
Conjunction is used, and the heat resistance of sealing ring, ageing-resistant performance can be made to be significantly improved；And a certain proportion of different acrylonitrile contents
Nitrile rubber 2707 and be used in combination with nitrile rubber 6240, can improve the heat resistance and medium-resistance of rubber itself, and maximum
Ensure that to limit sealing, the weatherability of sealing ring material；Be modified the molybdenum bisuphide for obtaining by CTAB and PEG, due to
MoS2With the presence of sulfur-rich adsorption layer, surface is presented negative electrical charge to microparticle surfaces, after the CTAB addition systems with cation group, must
So change MoS2The charging property of microparticle surfaces, this amphiphile, amphiphilic molecule is with its polar group towards solid, the solid table with adsorption layer
What face exposed be it is hydrocarbon wait lipophilic group, form good compatibility with the base-material such as nitrile rubber；At the same time modifying agent
Polyethylene glycol (PEG) is additionally used, two kinds of hydrophilic groups of hydroxyl and ether is comprised only in its molecular formula and without hydrophobic group, can be adsorbed
By scattered MoS2Particle surface, foring one layer has stronger " steric hindrance " effect macromolecular hydrophilic film, Ke Yijin
One step increases MoS2Intergranular repulsive energy, the dispersiveness and stability of enhancing system, and cut by means of the organic big of high concentration
Strand is to MoS2Particle carries out coating modification, makes MoS2Each particle be in the state of relative insulation, can suppress
The agglomeration of MoS2 particles；By the composite modified molybdenum bisuphide for obtaining of above two modifying agent, can be with micro-meter scale point
It is dispersed in the base-material of nitrile rubber etc., remains its distinctive lamellar structure, and then the wearability of sealing ring can be significantly increased
Can be with other mechanical properties；Additionally, being also added into a certain proportion of carbon black N330 in the present invention and carbon black N550 is used in mixed way simultaneously
The addition of both control, it is ensured that the elasticity of sealing ring material, it is ensured that the stretching of material, compress stress relaxation are closed one
In the range of reason, the sealing property of product is changed over time without significant change, increase the service life；Add polytetrafluoroethylene (PTFE) and
The reinforcing filler of short glass fiber, further increases anti-wear performance of the invention, lowers cost of the invention, and in rubber
Supporting structure is formed in glue material, such that it is able to further improve the mechanical performance and heat resistance of product；Stearic acid, zinc oxide
Curing efficiency when can improve the vulcanization of rubber, improve the heat resistance of sealing ring material and improve the physics of sealing member material
Mechanical property；The short vulcanization system being made up of sulphur, diphenylguanidine, altax, accelerator TT makes the strand of base-material play friendship
Connection reaction, makes linear molecule form space network, plasticity reduction, elastic strength increase, and material is in preparation process
In the sulfidization molding time greatly shorten, mechanical property is greatly improved after vulcanization；The 2- mercaptan ylmethylbenzimidazole zinc of addition
Salt and p phenylenediamine type antioxidant RD, can form continuous macromolecular protecting film on vulcanizate surface, improve the corrosion-resistant of material
Performance；Add sulphur as vulcanizing agent, be consequently formed a kind of efficient vulcanization system, reversion resistance is good, and vulcanization is uniform, fits
For thick product vulcanization, the vulcanizate for obtaining also has good heat resistance and compression resistant morphotropism；A certain proportion of zinc oxide
The vulcanization aid system formed with 2- mercaptoimidazolines, it appropriate with nitrile rubber and polybutadiene rubber etc. can react,
Suppress change, the cut-out of polymer chain of the cross-linked form in high temperature atmosphere, with being also difficult to even for long-term heat ageing
Produce the effect of physical property reduction；Coumarone indene resin and dibutyl phthalate are used as plasticizer, and can improve the present invention can
Plasticity, reduces temperature when material viscosity and mixing, improves dispersiveness and Combination；It is plasticized using Methyl Hydrogen Polysiloxane Fluid class
Agent, it is possible to provide good processing characteristics.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (9)
1. a kind of heat-resistant antifriction seal ring rubber material, it is characterised in that its raw material includes by weight：Nitrile rubber 75-90
Part, polybutadiene rubber 20-40 parts, ethylene propylene diene rubber 20-40 parts, modified molybdenum disulfide 5-10 parts, polytetrafluoroethylene (PTFE) 6-12
Part, short glass fiber 3-10 parts, carbon black 6-12 parts, fine particle calcium carbonate 4-10 parts, zinc oxide 2-5 parts, stearic acid 0.5-1 parts, oleic acid two
0.4-0.6 parts of monoethanolamine borate, drying oil alkyd resin 3-5 parts, 0.8-1.2 parts of 2- mercaptan ylmethylbenzimidazole zinc salt,
Anti-aging agent RD 0.1-0.3 parts, diphenylguanidine 0.2-0.4 parts, altax 0.3-0.6 parts, 0.2-0.4 parts of accelerator TT, sulphur
Sulphur 0.1-0.3 parts, vulcanization aid 0.1-0.3 parts, dibutyl phthalate 0.5-1 parts, Methyl Hydrogen Polysiloxane Fluid 3-10 parts；
The preparation method of the modified molybdenum disulfide includes：By MoS2Particle diameter is ground to for 20-40 mesh, adds ethanol to stir,
CTAB and PEG is sequentially added, 70-85 DEG C is warming up to, 20-24h is stirred, after standing 10-12h, suction filtration, washing, vacuum drying is obtained
To the modified molybdenum disulfide.
2. heat-resistant antifriction seal ring rubber material according to claim 1, it is characterised in that MoS2, CTAB, PEG weight
Match is 100:5-10:10-20.
3. heat-resistant antifriction seal ring rubber material according to claim 1 and 2, it is characterised in that the nitrile rubber is
It is made up of nitrile rubber 2707 and nitrile rubber 6240, the weight proportion of nitrile rubber 2707 and nitrile rubber 6240 is 6-8:1.
4. the heat-resistant antifriction seal ring rubber material according to any one of claim 1-3, it is characterised in that the carbon black
It is made up of carbon black N330 and carbon black N550, the weight proportion of carbon black N330 and carbon black N550 is 1:3-5.
5. the heat-resistant antifriction seal ring rubber material according to any one of claim 1-4, it is characterised in that the vulcanization
Auxiliary agent is made up of metal oxide and adjuvant；Preferably, the vulcanization aid is by zinc oxide and 2- mercaptoimidazoline groups
Into the weight proportion of zinc oxide and 2- mercaptoimidazolines is 1:0.8-1.
6. the heat-resistant antifriction seal ring rubber material according to any one of claim 1-5, it is characterised in that butyronitrile rubber
Glue, polybutadiene rubber, the weight proportion of ethylene propylene diene rubber is：80-85:25-30:30-35.
7. the heat-resistant antifriction seal ring rubber material according to any one of claim 1-5, it is characterised in that its raw material is pressed
Weight portion includes：Nitrile rubber 80-85 parts, polybutadiene rubber 25-35 parts, ethylene propylene diene rubber 30-35 parts, be modified curing
Molybdenum 7-9 parts, polytetrafluoroethylene (PTFE) 8-10 parts, short glass fiber 5-8 parts, carbon black 8-10 parts, fine particle calcium carbonate 6-8 parts, zinc oxide 3-4 parts,
Stearic acid 0.7-0.9 parts, 0.4-0.5 parts of oleic acid diethanol amine borate, drying oil alkyd resin 4-5 parts, 2- mercaptan ylmethyls
0.9-1.1 parts of benzimidazole zinc salt, anti-aging agent RD 0.1-0.2 parts, diphenylguanidine 0.3-0.4 parts, altax 0.4-0.5
Part, 0.3-0.4 parts of accelerator TT, sulphur 0.2-0.3 parts, vulcanization aid 0.1-0.2 parts, dibutyl phthalate 0.7-0.9
Part, Methyl Hydrogen Polysiloxane Fluid 5-8 parts.
8. the preparation method of a kind of heat-resistant antifriction seal ring rubber material according to any one of claim 1-7, it is special
Levy and be, comprise the following steps：
S1, will plasticate in nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury it is uniform after, sequentially add
It is modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid, oleic acid diethanol amine borate, dry
Property oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, dibutyl phthalate, methyl hydrogen
Silicone oil, mixing is uniform, discharge, and cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax, promotion
Agent TT, mixing is uniform, slice, cooling, obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, is vulcanized, vulcanization is cooled to room temperature, the demoulding after terminating
Obtain the heat-resistant antifriction seal ring rubber material.
9. the preparation method of heat-resistant antifriction seal ring rubber material according to claim 8, it is characterised in that including as follows
Step：
In S1, by nitrile rubber, polybutadiene rubber, ethylene propylene diene rubber input banbury in the 35- that plasticated at 60-80 DEG C
After 45min, modified molybdenum disulfide, polytetrafluoroethylene (PTFE), short glass fiber, fine particle calcium carbonate, zinc oxide, stearic acid, oil are sequentially added
Sour diethanol amine borate, drying oil alkyd resin, 2- mercaptan ylmethylbenzimidazoles zinc salt, anti-aging agent RD, carbon black, adjacent benzene two
Formic acid dibutyl ester, Methyl Hydrogen Polysiloxane Fluid, in 15-25min is kneaded at 70-100 DEG C, discharge, cooling obtains masterbatch；
S2, the masterbatch that S1 is obtained put into mill, add sulphur, vulcanization aid, diphenylguanidine, altax, promotion
Agent TT, kneads 10-20min at 35-55 DEG C, and slice, cooling obtains finished composition；
S3, the finished composition that S2 is obtained is put into the mould of vulcanizer, 30-40min is vulcanized at 175-195 DEG C, be cooled to room
Temperature, the demoulding obtains the heat-resistant antifriction seal ring rubber material.
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| CN107474299A (en) * | 2017-09-12 | 2017-12-15 | 成都新柯力化工科技有限公司 | A kind of nitrile rubber and preparation method using the foaming of paste system |
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| CN107474299A (en) * | 2017-09-12 | 2017-12-15 | 成都新柯力化工科技有限公司 | A kind of nitrile rubber and preparation method using the foaming of paste system |
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| CN108395588A (en) * | 2018-01-17 | 2018-08-14 | 宁国市顺鑫金属制品有限公司 | The strong forging press cushion pad and preparation method thereof of wear-resistant antibacterial ability |
| CN108250508A (en) * | 2018-02-08 | 2018-07-06 | 合肥康之恒机械科技有限公司 | A kind of mining machinery cushion pad high temperature resistant pressure resistance anti-deformation rubber |
| CN108299781A (en) * | 2018-03-26 | 2018-07-20 | 山东冬瑞高新技术开发有限公司 | A kind of wear-resistant tyre rubber material and preparation method thereof |
| CN108299781B (en) * | 2018-03-26 | 2020-07-17 | 浙江富铭工业机械有限公司 | Rubber material for wear-resistant tire and preparation method thereof |
| CN110240758A (en) * | 2019-06-18 | 2019-09-17 | 宁国市正道橡塑零部件有限公司 | A kind of self-lubricating abrasion-resistant rubber material and preparation method thereof |
| CN114752085A (en) * | 2022-04-25 | 2022-07-15 | 天台县合润橡胶厂 | Wear-resistant heat-dissipation rubber master batch and preparation method thereof |
| CN114854137A (en) * | 2022-04-29 | 2022-08-05 | 贵州省材料产业技术研究院 | Rubber sealing composite material based on modified molybdenum disulfide and preparation method thereof |
| CN114957961A (en) * | 2022-07-09 | 2022-08-30 | 鑫宝智能制造唐山有限公司 | Polyphenyl ether composite material for wear-resistant pipeline and preparation method thereof |
| CN115558175A (en) * | 2022-09-23 | 2023-01-03 | 浙江国泰萧星密封材料股份有限公司 | Oil-resistant rubber gasket, preparation method and high-strength oil-resistant rubber expansion joint |
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