CN105623003B - Railway vehicle vibration damping sizing composition of resistance to less than 50 DEG C low temperature and preparation method thereof - Google Patents
Railway vehicle vibration damping sizing composition of resistance to less than 50 DEG C low temperature and preparation method thereof Download PDFInfo
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- CN105623003B CN105623003B CN201610101406.8A CN201610101406A CN105623003B CN 105623003 B CN105623003 B CN 105623003B CN 201610101406 A CN201610101406 A CN 201610101406A CN 105623003 B CN105623003 B CN 105623003B
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- C—CHEMISTRY; METALLURGY
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention relates to the vibration isolation rubber field of track traffic, more particularly to a kind of railway vehicle vibration damping composition of resistance to less than 50 DEG C low temperature sizing materials and preparation method thereof, the sizing composition includes following component by weight：40 60 parts of liquid isoprene rubber；40 60 parts of EP rubbers；20 70 parts of carbon black N550；10 30 parts of carbon black N990；30 50 parts of plasticizer；4 10 parts of age resistor；3 10 parts of zinc oxide；15 parts of stearic acid；0.5 10 parts of cumyl peroxide；1 10 parts of Sulfur；1.5 3 parts of accelerator.Rubber damping product of the present invention effectively raises the ageing-resistant performance of sizing material（Hot air aging and ozone aging performance）And resistance to low temperature（Black brittleness, the cold-resistant coefficient of compression and Ji Men are reversed）, substantially it is better than the rubber damping product of traditional sizing material production in 50 DEG C of low temperature toughness rates of change.
Description
Technical field
The present invention relates to the vibration isolation rubber field of track traffic, more particularly to a kind of railway vehicle vibration damping with resistance to -50 DEG C with
Composition of lower low temperature sizing material and preparation method thereof.
Background technology
The elastic force of rubber is produced by the change of coiled molecule conformation completely.Because rubber molecule interphase interaction can hinder point
The motion of subchain, viscosity or viscosity are shown as, so that stress and strain is often in non-equilibrium state.Act on rubber molecule
Power, a part be used for overcome intermolecular viscous drag, portion of energy is absorbed during viscous friction；Another part is
Make molecule deformation of chain, the viscoelastic properties of rubber is formed both this.Rubber is in dynamic deformation, due to there is viscoelastic viscous resistance to make
With making strain lag behind stress, the rubber damping property of interior friction is rubber when this hysteresis characteristic for resulting from rubber and deformation
One excellent specific property of glue vibration damping.
So rubber shock-absorbing product is the essential important component of modern railway vehicle, rubber shock-absorbing product closes
Be to rail vehicle security, comfortableness and stability be rail vehicle important component.
Crystallization and glass transition phenomenon occurs in rubber at low ambient temperatures so that rubber vulcanizate module increased dramatically, therefore
An important factor for temperature condition is into limitation rubber shock-absorbing product application.
For the problem, prior art has done many researchs and improvement, such as in change sizing material gum content, from new plasticising
Agent etc. is improved.By these improvement, rubber shock-absorbing product can meet -40 DEG C of high and cold temperature requirement.
But can not also in face of -50 DEG C of even lower temperature conditions, these improvement of vibration damping sizing material such as Northeast Area of China, Russia, Northern Europe
Meet to require.
The content of the invention
The present invention is directed to the deficiencies in the prior art, there is provided a kind of resistance to less than -50 DEG C low temperature of railway vehicle vibration damping
Composition of sizing material and preparation method thereof.
The technical scheme is that：
A kind of composition of resistance to less than -50 DEG C low temperature sizing material of railway vehicle vibration damping, include by weight as follows
Component：Liquid isoprene rubber 40-60 parts；EP rubbers 40-60 parts；Carbon black N550 20-70 parts；Carbon black N990 10-30
Part；Plasticizer 30-50 parts；Age resistor 4-10 parts；Zinc oxide 3-10 parts；Stearic acid 1-5 parts；Cumyl peroxide 0.5-10
Part；Sulfur 1-10 parts；Accelerator 1.5-3 parts.
Preferably, on the basis of above scheme, railway vehicle vibration damping with the composition of resistance to less than -50 DEG C low temperature sizing material by
Following component forms by weight：Liquid isoprene rubber 40-60 parts；EP rubbers 40-60 parts；Carbon black N550 20-70
Part；Carbon black N990 10-30 parts；Plasticizer 30-50 parts；Age resistor 4-10 parts；Zinc oxide 3-10 parts；Stearic acid 1-5 parts；Peroxide
Change diisopropylbenzene (DIPB) 0.5-10 parts；Sulfur 1-10 parts；Accelerator 1.5-3 parts.
Preferably, described age resistor is the mixture of anti-aging agent RD and antioxidant BLE, according to weight fraction than 2：1 is mixed
Conjunction forms.
Preferably, described accelerator is the mixture of Vulcanization accelerator TMTD and accelerant NOBS, according to weight fraction than 1：2
Mix.
Preferably, on the basis of above scheme, railway vehicle vibration damping with the composition of resistance to less than -50 DEG C low temperature sizing material by
Following component forms by weight：50 parts of liquid isoprene rubber；50 parts of EP rubbers；50 parts of carbon black N550；Carbon black
30 parts of N990；50 parts of plasticizer；4 parts of anti-aging agent RD；2 parts of antioxidant BLE；6 parts of zinc oxide；2.5 parts of stearic acid；Peroxidating
5 parts of diisopropylbenzene (DIPB)；3 parts of Sulfur；0.8 part of Vulcanization accelerator TMTD；1.6 parts of accelerant NOBS.
Preferably, ethylene contents are 45-55% in described EP rubbers.
Preferably, the number-average molecular weight of described liquid isoprene rubber is 30000-50000.
Preferably, described plasticizer selects cold resistant plasticizer TP-90B.Cold resistant plasticizer TP-90B is alkyl, polyether, purchase
Buy producer：Hao Site chemicals (Shanghai) Co., Ltd. lot number：1A1837004660
It is another object of the present invention to disclose combination of the above-mentioned railway vehicle vibration damping with resistance to less than -50 DEG C low temperature sizing material
The preparation method of thing：
(1) prepared by liquid isoprene rubber master batch：By liquid isoprene rubber, carbon black N990 and cold resistant plasticizer TP-90B
Add in homogenizer, speed setting 500rad/min, stir 3-5 minutes, it is standby after being taken out from homogenizer.
(2) prepared by low temperature resistant sizing material：EP rubbers is added into mixer mixing 1-1.5 minutes, adds age resistor, stearic acid
1-1.5min is kneaded with zinc oxide, adds carbon black N550 and the liquid isoprene milling maternal rubber 2-5 minutes prepared, is finally added
Enter accelerator, Sulfur and cumyl peroxide and be kneaded 1.5-2 minute discharges.
Liquid polyisoprene rubber is the liquid rubber prepared using chemical synthesis, molecular structure and natural rubber base
This is identical.It is narrower with relative molecular mass distribution, the characteristics of cis-Isosorbide-5-Nitrae-structural content is small.
The liquid isoprene rubber that the equal relative molecular masses of number are 30,000-5 ten thousand had both demonstrated flexibility the property (reaction of body
Property) show the property (liquid fluidity) of plasticizer again, and can completely can be with vulcanization crosslinking.
Respectively there is an end of the chain segment at two of rubber molecular chain, and the mobility of this end of the chain segment is come than general segment
It is big, when molecular weight is lower, the ratio of end of the chain segment is higher, so glass transition temperature is also lower.Molecular weight and vitrifying
The relation of transition temperature is shown below.
Tg is glass transition temperature in formula；The glass transition temperature of rubber when Tg (∞) is molecular weight infinity；K is
Characteristic constant；Mn is number-average molecular weight.
Common natural rubber number-average molecular weight is 26.7 ten thousand, and liquid polyisoprene rubber number-average molecular weight is 3-5 ten thousand,
Lower glass transition temperature is had according to the relational expression liquid polyisoprene rubber of molecular weight and glass transition temperature.
EP rubbers is monomer copolymerization and a kind of synthetic rubber for synthesizing based on ethene and propylene, is in ethylene contents
When 40%~60%, EP rubbers has minimum glass transition temperature, and ethene and third have been broken in this random copolymerization
The original crystallization of alkene forms noncrystalline rubber.
General vibration isolation rubber is using natural rubber as main body rubber, it is known that natural rubber can have knot at low ambient temperatures
Brilliant and glass transition problem, causes rubber to occur becoming fragile, modulus increased dramatically, phenomena such as following the string, and causes rubber damping
Product destruction.The problem of existing at low ambient temperatures for vibration isolation rubber needs from reduction sizing material crystallinity and reduces sizing material glass
Change the aspect of transition temperature two to solve.
The present invention using molecular structure and performance is essentially identical and liquid that glass transition temperature is lower than natural gum gather it is different
Pentadiene rubber and the blending of non crystallized EP rubbers, are on the one hand reduced by the liquid polyisoprene rubber of low molecule amount
The glass transition temperature of blended rubber, on the other hand add noncrystalline EP rubbers and broken liquid polyisoprene rubber original
Some regularities are so as to solving sizing material crystallisation problems at low temperature.
Solve liquid polyisoprene rubber and EP rubbers by adding cumyl peroxide in sizing compound formula
Co-vulcanization problem, ensure that sizing material has enough intensity and bearing capacity, meet the work(of rubber shock-absorbing product used for rail vehicle
Can property requirement.
Beneficial effects of the present invention are：
1st, the present invention effectively raises the resistance to of sizing material on the basis of meeting rubber damping product to properties of rubber requirement
(black brittleness, the cold-resistant coefficient of compression and Ji Men are turned round for ageing properties (hot air aging and ozone aging performance) and resistance to low temperature
Turn).
2nd, the rubber damping product of sizing material production of the present invention is substantially better than traditional sizing material in -50 DEG C of low temperature toughness rates of change
The rubber damping product of production.
Embodiment
The embodiment of the present invention is as follows：
Embodiment 1：
A kind of composition of resistance to less than -50 DEG C low temperature sizing material of railway vehicle vibration damping, its main raw material(s) composition and quality
Number matches：50 parts of liquid isoprene rubber (number-average molecular weight 30000)；EP rubbers (ethylene contents 45-
55%) 50 parts；50 parts of carbon black N550；30 parts of carbon black N990；50 parts of cold resistant plasticizer TP-90B；4 parts of anti-aging agent RD；It is anti-old
2 parts of agent BLE；6 parts of zinc oxide；2.5 parts of stearic acid；5 parts of cumyl peroxide；3 parts of Sulfur；0.8 part of Vulcanization accelerator TMTD；Promote
Enter 1.6 parts of agent NOBS.
Cold resistant plasticizer TP-90B is alkyl, polyether, buys producer：Hao Site chemicals (Shanghai) Co., Ltd. lot number：
1A1837004660
Step of preparation process is as follows.
(1) prepared by liquid isoprene rubber master batch：By liquid isoprene rubber, carbon black N990 and cold resistant plasticizer TP-90B
Add in homogenizer, speed setting 500rad/min, stir 3-5 minutes, it is standby after being taken out from homogenizer.
(2) prepared by low temperature resistant sizing material：EP rubbers is added into mixer mixing 1-1.5 minutes, adds age resistor, stearic acid
1-1.5min is kneaded with zinc oxide, adds carbon black N550 and the liquid isoprene milling maternal rubber 2-5 minutes prepared, is finally added
Enter accelerator, Sulfur and cumyl peroxide and be kneaded 1.5-2 minute discharges.
Embodiment 2：
A kind of composition of resistance to less than -50 DEG C low temperature sizing material of railway vehicle vibration damping, its main raw material(s) composition and quality
Number matches：40 parts of liquid isoprene rubber (number-average molecular weight 30000)；EP rubbers (ethylene contents 45-
55%) 60 parts；25 parts of carbon black N550；20 parts of carbon black N990；30 parts of cold resistant plasticizer TP-90B；3 parts of anti-aging agent RD；It is anti-old
1.5 parts of agent BLE；3 parts of zinc oxide；1 part of stearic acid；10 parts of cumyl peroxide；1 part of Sulfur；0.5 part of Vulcanization accelerator TMTD；
1 part of accelerant NOBS.
Preparation method is as described in Example 1.
Embodiment 3：
A kind of composition of resistance to less than -50 DEG C low temperature sizing material of railway vehicle vibration damping, its main raw material(s) composition and quality
Number matches：60 parts of liquid isoprene rubber (number-average molecular weight 30000)；EP rubbers (ethylene contents 45-
55%) 40 parts；70 parts of carbon black N550；10 parts of carbon black N990；40 parts of cold resistant plasticizer TP-90B；6.6 parts of anti-aging agent RD；It is anti-
Old 3.3 parts of agent BLE；10 parts of zinc oxide；5 parts of stearic acid；0.5 part of cumyl peroxide；10 parts of Sulfur；Vulcanization accelerator TMTD 1
Part；2 parts of accelerant NOBS.
Preparation method is as described in Example 1.
Conventional rails rubber vehicle damped products sizing material, its main raw material(s) composition and quality proportioning are：Natural rubber
50 parts；50 parts of cis-butadiene rubber；Carbon black N774 20-70 parts；Carbon black N550 20-60 parts；Aromatic naphtha 5-15 parts；Age resistor
RD 6-10 parts；Antioxidant BLE 3-5 parts；Zinc oxide 3-10 parts；Stearic acid 1-5 parts；Sulfur 1-10 parts；Vulcanization accelerator TMTD 0.5-3
Part；Accelerant NOBS 0.5-4.5 parts.
Elastomeric material of the present invention and the contrast of traditional elastomeric material basic performance are as shown in table 1.
The sizing material basic performance of table 1 contrasts
From the data of table 1 as can be seen that compared with traditional sizing material, the present invention is meeting damping products to rubber performance requirement
On the basis of effectively raise sizing material ageing-resistant performance (hot air aging and ozone aging performance) and resistance to low temperature it is (low
Warm fragility, the cold-resistant coefficient of compression and Ji Men are reversed).
Typical rubber damped products low temperature toughness performance used for rail vehicle is as shown in table 2.
The rubber shock-absorbing product low temperature toughness of table 2
From the data of table 2 as can be seen that compared with traditional sizing material, the rubber damping product of sizing material production of the present invention is -50
DEG C low temperature toughness rate of change is substantially better than the rubber damping product of traditional sizing material production.
Embodiment 4：
A kind of composition of resistance to less than -50 DEG C low temperature sizing material of railway vehicle vibration damping, its main raw material(s) composition and quality
Number matches：50 parts of liquid isoprene rubber (number-average molecular weight 50000)；EP rubbers (ethylene contents 45-
55%) 50 parts；50 parts of carbon black N550；30 parts of carbon black N990；50 parts of cold resistant plasticizer TP-90B；4 parts of anti-aging agent RD；It is anti-old
2 parts of agent BLE；6 parts of zinc oxide；2.5 parts of stearic acid；5 parts of cumyl peroxide；3 parts of Sulfur；0.8 part of Vulcanization accelerator TMTD；Promote
Enter 1.6 parts of agent NOBS.
Preparation technology is as described in Example 1.
Embodiment 5：
A kind of composition of resistance to less than -50 DEG C low temperature sizing material of railway vehicle vibration damping, its main raw material(s) composition and quality
Number matches：40 parts of liquid isoprene rubber (number-average molecular weight 50000)；EP rubbers (ethylene contents 45-
55%) 60 parts；25 parts of carbon black N550；20 parts of carbon black N990；30 parts of cold resistant plasticizer TP-90B；3 parts of anti-aging agent RD；It is anti-old
1.5 parts of agent BLE；3 parts of zinc oxide；1 part of stearic acid；10 parts of cumyl peroxide；1 part of Sulfur；0.5 part of Vulcanization accelerator TMTD；
1 part of accelerant NOBS.
Preparation method is as described in Example 1.
Embodiment 6：
A kind of composition of resistance to less than -50 DEG C low temperature sizing material of railway vehicle vibration damping, its main raw material(s) composition and quality
Number matches：60 parts of liquid isoprene rubber (number-average molecular weight 50000)；EP rubbers (ethylene contents 45-
55%) 40 parts；70 parts of carbon black N550；10 parts of carbon black N990；40 parts of cold resistant plasticizer TP-90B；6.6 parts of anti-aging agent RD；It is anti-
Old 3.3 parts of agent BLE；10 parts of zinc oxide；5 parts of stearic acid；0.5 part of cumyl peroxide；10 parts of Sulfur；Vulcanization accelerator TMTD 1
Part；2 parts of accelerant NOBS.
Preparation method is as described in Example 1.
Conventional rails vehicle rubber shock-absorbing product sizing material, its main raw material(s) composition and quality proportioning are：Natural rubber
100 parts；Carbon black N774 20-70 parts；Carbon black N550 20-60 parts；Aromatic naphtha 5-15 parts；Anti-aging agent RD 6-10 parts；Age resistor
BLE 3-5 parts；Zinc oxide 3-10 parts；Stearic acid 1-5 parts；Sulfur 1-10 parts；Vulcanization accelerator TMTD 0.5-3 parts；Accelerant NOBS
0.5-4.5 parts.
Elastomeric material of the present invention and the contrast of traditional elastomeric material basic performance are as shown in table 3.
The sizing material basic performance of table 3 contrasts
From the data of table 3 as can be seen that compared with traditional sizing material, the present invention is meeting rubber damping product to properties of rubber
The ageing-resistant performance (hot air aging and ozone aging performance) and lower temperature resistance of sizing material are effectively raised on the basis of it is required that
(black brittleness, cold-resistant coefficient and Ji Men torsion can be compressed).
Typical rubber damped products low temperature toughness performance used for rail vehicle is as shown in table 4.
The rubber shock-absorbing product low temperature toughness of table 4
From the data of table 4 as can be seen that compared with traditional sizing material, the rubber damping product of sizing material production of the present invention is -50
DEG C low temperature toughness rate of change is substantially better than the rubber damping product of traditional sizing material production.
Claims (7)
1. a kind of railway vehicle vibration damping composition of resistance to less than -50 DEG C low temperature sizing material, it is characterised in that include by weight
The following component of meter：Liquid isoprene rubber 40-60 parts；EP rubbers 40-60 parts；Carbon black N550 20-70 parts；Carbon black
N990 10-30 parts；Plasticizer 30-50 parts；Age resistor 4-10 parts；Zinc oxide 3-10 parts；Stearic acid 1-5 parts；Peroxidating diisopropyl
Benzene 0.5-10 parts；Sulfur 1-10 parts；Accelerator 1.5-3 parts；
Ethylene contents are 45-55% in described EP rubbers；The number-average molecular weight of described liquid isoprene rubber is
30000-50000。
2. the railway vehicle vibration damping according to claim 1 composition of resistance to less than -50 DEG C low temperature sizing material, its feature exist
In being made up of by weight following component：Liquid isoprene rubber 40-60 parts；EP rubbers 40-60 parts；Carbon black N550
20-70 parts；Carbon black N990 10-30 parts；Plasticizer 30-50 parts；Age resistor 4-10 parts；Zinc oxide 3-10 parts；Stearic acid 1-5 parts；
Cumyl peroxide 0.5-10 parts；Sulfur 1-10 parts；Accelerator 1.5-3 parts.
3. the railway vehicle vibration damping according to claim 1 or 2 composition of resistance to less than -50 DEG C low temperature sizing material, its feature
It is, described age resistor is the mixture of anti-aging agent RD and antioxidant BLE, according to weight fraction than 2：1 mixes.
4. the railway vehicle vibration damping according to claim 1 or 2 composition of resistance to less than -50 DEG C low temperature sizing material, its feature
It is, described accelerator is the mixture of Vulcanization accelerator TMTD and accelerant NOBS, according to weight fraction than 1：2 mix.
5. the railway vehicle vibration damping according to claim 1 or 2 composition of resistance to less than -50 DEG C low temperature sizing material, its feature
It is, is made up of by weight following component：50 parts of liquid isoprene rubber；50 parts of EP rubbers；Carbon black N550 50
Part；30 parts of carbon black N990；50 parts of plasticizer；4 parts of anti-aging agent RD；2 parts of antioxidant BLE；6 parts of zinc oxide；2.5 parts of stearic acid；
5 parts of cumyl peroxide；3 parts of Sulfur；0.8 part of Vulcanization accelerator TMTD；1.6 parts of accelerant NOBS.
6. the railway vehicle vibration damping according to claim 1 or 2 composition of resistance to less than -50 DEG C low temperature sizing material, its feature
It is, described plasticizer selects cold resistant plasticizer TP-90B.
7. a kind of prepare system of the railway vehicle vibration damping as claimed in claim 6 with the composition of resistance to less than -50 DEG C low temperature sizing material
Preparation Method：
(1) prepared by liquid isoprene rubber master batch：Liquid isoprene rubber, carbon black N990 and cold resistant plasticizer TP-90B are added
In homogenizer, speed setting 500rad/min, 3-5 minutes are stirred, it is standby after being taken out from homogenizer；
(2) prepared by low temperature resistant sizing material：EP rubbers is added into mixer mixing 1-1.5 minutes, adds age resistor, stearic acid and oxygen
Change zinc and be kneaded 1-1.5min, add carbon black N550 and the liquid isoprene milling maternal rubber 2-5 minutes prepared, be eventually adding rush
Enter agent, Sulfur and cumyl peroxide and be kneaded 1.5-2 minute discharges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610101406.8A CN105623003B (en) | 2016-02-24 | 2016-02-24 | Railway vehicle vibration damping sizing composition of resistance to less than 50 DEG C low temperature and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610101406.8A CN105623003B (en) | 2016-02-24 | 2016-02-24 | Railway vehicle vibration damping sizing composition of resistance to less than 50 DEG C low temperature and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105623003A CN105623003A (en) | 2016-06-01 |
| CN105623003B true CN105623003B (en) | 2018-02-16 |
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ID=56038377
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| Application Number | Title | Priority Date | Filing Date |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408635A (en) * | 2011-09-22 | 2012-04-11 | 四川巴斯迪科机械有限公司 | High-strength rubber for damping pulley of car |
| CN102585379A (en) * | 2011-01-13 | 2012-07-18 | 北京橡胶工业研究设计院 | Ethylene propylene diene rubber composition and preparation method |
| CN102775685A (en) * | 2012-06-25 | 2012-11-14 | 安徽中鼎减震橡胶技术有限公司 | Torsional damper rubber for engine and manufacturing process of torsional damper rubber |
| CN105086856A (en) * | 2015-08-31 | 2015-11-25 | 北京龙苑伟业新材料有限公司 | Preformed automobile-damping expandable rubber belt with good oil surface construction and preparation method therefor |
-
2016
- 2016-02-24 CN CN201610101406.8A patent/CN105623003B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585379A (en) * | 2011-01-13 | 2012-07-18 | 北京橡胶工业研究设计院 | Ethylene propylene diene rubber composition and preparation method |
| CN102408635A (en) * | 2011-09-22 | 2012-04-11 | 四川巴斯迪科机械有限公司 | High-strength rubber for damping pulley of car |
| CN102775685A (en) * | 2012-06-25 | 2012-11-14 | 安徽中鼎减震橡胶技术有限公司 | Torsional damper rubber for engine and manufacturing process of torsional damper rubber |
| CN105086856A (en) * | 2015-08-31 | 2015-11-25 | 北京龙苑伟业新材料有限公司 | Preformed automobile-damping expandable rubber belt with good oil surface construction and preparation method therefor |
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| Publication number | Publication date |
|---|---|
| CN105623003A (en) | 2016-06-01 |
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