CN106432841A - Steam chamber rubber diaphragm - Google Patents
Steam chamber rubber diaphragm Download PDFInfo
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- CN106432841A CN106432841A CN201610927278.2A CN201610927278A CN106432841A CN 106432841 A CN106432841 A CN 106432841A CN 201610927278 A CN201610927278 A CN 201610927278A CN 106432841 A CN106432841 A CN 106432841A
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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
- C08L9/06—Copolymers with styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/02—Copolymers with acrylonitrile
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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
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to a steam chamber rubber diaphragm, which is prepared from the following raw materials: styrene butadiene rubber, ethylene propylene diene monomer, modified nitrile butadiene rubber, modified filler, silicon nitride crystal whisker, N-cyclohexyl-N'-phenyl para-phenylene diamine, 4, 4'-methylene bis (2-chloroaniline), zinc dialkyl-dithio-phosphate, (1-myristyl) trimethyl ammonium bromide, meta-toluenediamine, carbon black, aluminum oxide, glass fiber, calcium peroxide, 1, 1'-(4-thio two-carbon sulfur) two piperidine and diethylene glycol dimethacrylate. The steam chamber rubber diaphragm has excellent tensile mechanical property, corrosion resistance and ageing resistance.
Description
Technical field
The present invention relates to a kind of rubber diaphragm for vapor chamber, belongs to Material Field.
Background technology
Rubber diaphragm of automobile brake chamber, be one kind be widely used in all kinds brake system of car, in aor brake
Play sealing, the critical component of transmission press-brake.With automobile high-speed, comfortable, reliability（Safety）Requirement more and more higher, right
The diaphragm of rubber of one of automobile brake chamber critical component is put forward higher requirement.
Content of the invention
It is an object of the present invention to provide a kind of rubber diaphragm for vapor chamber, with excellent drawing mechanical performance and corrosion resistance, resistance to old
The property changed.
The solution of the present invention is as follows：A kind of rubber diaphragm for vapor chamber, is made up of following raw material：Butadiene-styrene rubber 82-95
Part, ethylene propylene diene rubber 16-22 part, modified nitrile rubber 35-45 part, modified filler 15-20 part, silicon nitride crystal whisker 8-12 part,
N cyclohexyl N' phenyl P phenylene diamine 4-8 part, 4,4' methylene bis (2- chloroaniline) 5-8 part, zinc dialkyl dithiophosphate
6-9 part, (1- myristyl) trimethylammonium bromide 2-5 part, toluylenediamine 1-4 part, white carbon black 8-11 part, aluminium sesquioxide 2-4
Part, glass fibre 3-6 part, calper calcium peroxide 2-6 part, 1,1'- (two carbon sulfenyl of tetrathio) bipiperidine 4-8 part, diethylene glycol diformazan
Base acrylate 2-6 part；
Described modified nitrile rubber is obtained by following methods：By nitrile rubber 30-40 part of weight portion, tetren 8-
12 parts, trithiocyanuric acid 4-6 part, 5- sulfonic acid -1,3- dimethyl isophthalate sodium salt 2-5 part, trifluoromethayl sulfonic acid calcium 0.3-
0.6 part, calcium sulfate hemihydrate 0.1-0.2 part, aluminium borate whisker 0.4-0.8 part be put on banbury, at a temperature of 82-86 DEG C,
11-15min is refined in banburying, is obtained final product after cooling；
Described modified filler is obtained by following methods：
By tremolite 30-45 part of weight portion, Pulvis Talci 12-18 part, graphite 5-9 part, diopside 12-16 part at 580-610 DEG C
At a temperature of calcined, the time be 5-6h；Grind after calcining, be subsequently adding polyvinyl alcohol 3-6 part, acetylbutyrylcellulose 5-9
Part, trifluoromethayl sulfonic acid calcium 3-5 part, 2- amino butanol 1-2 part, the mixing of metaboric acid 1.8-2.5 part, grinding, stirring, are eventually adding
Clout, mixing, grinding, stirring, obtain final product.
Further, described modified nitrile rubber is obtained by following methods：By 33 parts of the nitrile rubber of weight portion, four sub- second
9 parts of five amine of base, 5 parts of trithiocyanuric acid, 4 parts of 5- sulfonic acid -1,3- dimethyl isophthalate sodium salt, trifluoromethayl sulfonic acid calcium 0.45
Part, 0.17 part of calcium sulfate hemihydrate, 0.63 part of aluminium borate whisker are put on banbury, and at a temperature of 85 DEG C, 11- is refined in banburying
15min, obtains final product after cooling.
Further, described modified filler is obtained by following methods：By 41 parts of the tremolite of weight portion, 15 parts of Pulvis Talci,
8 parts of graphite, 15 parts of diopside are calcined at a temperature of 580-610 DEG C, and the time is 5-6h；Grind after calcining, be subsequently adding poly-
4 parts of vinyl alcohol, 6 parts of acetylbutyrylcellulose, 3.6 parts of trifluoromethayl sulfonic acid calcium, 1.5 parts of 2- amino butanol, 2.1 parts of metaboric acid,
Mix, grind, stir, clout is eventually adding, mix, grind, stir, obtain final product.
A kind of rubber diaphragm for vapor chamber, is made up of following raw material：88 parts of butadiene-styrene rubber, 19 parts of ethylene propylene diene rubber,
41 parts of modified nitrile rubber, 16 parts of modified filler, 10 parts of silicon nitride crystal whisker, 6 parts of N cyclohexyl N' phenyl P phenylene diamine, 4,
7 parts of 4'- di-2-ethylhexylphosphine oxide (2- chloroaniline), 7 parts of zinc dialkyl dithiophosphate, 4 parts of (1- myristyl) trimethylammonium bromide,
3 parts of toluylenediamine, 10 parts of white carbon black, 3 parts of aluminium sesquioxide, 5 parts of glass fibre, 4 parts of calper calcium peroxide, 1,1'- (two carbon of tetrathio
Sulfenyl) 6 parts of bipiperidine, 4 parts of dimethacrylate.
A kind of rubber diaphragm for vapor chamber, is made up of following raw material：93 parts of butadiene-styrene rubber, 21 parts of ethylene propylene diene rubber,
39 parts of modified nitrile rubber, 18 parts of modified filler, 9 parts of silicon nitride crystal whisker, 5 parts of N cyclohexyl N' phenyl P phenylene diamine, 4,4'-
5 parts of di-2-ethylhexylphosphine oxide (2- chloroaniline), 8 parts of zinc dialkyl dithiophosphate, 3 part, first of (1- myristyl) trimethylammonium bromide
2 parts of phenylenediamine, 9 parts of white carbon black, 2.4 parts of aluminium sesquioxide, 4.1 parts of glass fibre, 3 parts of calper calcium peroxide, 1,1'- (two carbon of tetrathio
Sulfenyl) 6 parts of bipiperidine, 5 parts of dimethacrylate.
The present invention is coordinated with butadiene-styrene rubber, ethylene propylene diene rubber by adding modified nitrile rubber and modified filler so that
Rubber raw materials are tightly combined, ageing-resistant, and mechanical performance is excellent, and with preferable Corrosion Protection.Coordinate with other formula, make
Obtain rubber mass and there is more preferably mechanical performance.
Specific embodiment
Modified nitrile rubber is obtained by following methods：By 33 parts of the nitrile rubber of weight portion, 9 parts of tetren, three
5 parts of polysulfide cyanic acid, 4 parts of 5- sulfonic acid -1,3- dimethyl isophthalate sodium salt, 0.45 part of trifluoromethayl sulfonic acid calcium, half hydration sulfur
0.17 part of sour calcium, 0.63 part of aluminium borate whisker are put on banbury, and at a temperature of 85 DEG C, 11-15min is refined in banburying, after cooling i.e.
?.
Described modified filler is obtained by following methods：By 41 parts of the tremolite of weight portion, 15 parts of Pulvis Talci, 8 parts of graphite,
15 parts of diopside is calcined at a temperature of 580-610 DEG C, and the time is 5-6h；Grind after calcining, be subsequently adding polyvinyl alcohol 4
Part, 6 parts of acetylbutyrylcellulose, 3.6 parts of trifluoromethayl sulfonic acid calcium, 1.5 parts of 2- amino butanol, 2.1 parts of metaboric acid, mix, grind
Mill, stirring, are eventually adding clout, mix, grind, stir, obtain final product.
Embodiment 1
A kind of rubber diaphragm for vapor chamber, is made up of following raw material：88 parts of butadiene-styrene rubber, 19 parts of ethylene propylene diene rubber, modification
41 parts of nitrile rubber, 16 parts of modified filler, 10 parts of silicon nitride crystal whisker, 6 parts of N cyclohexyl N' phenyl P phenylene diamine, 4,4'- Asia
7 parts of methyl double (2- chloroanilines), 7 parts of zinc dialkyl dithiophosphate, 4 part, toluene of (1- myristyl) trimethylammonium bromide
3 parts of diamidogen, 10 parts of white carbon black, 3 parts of aluminium sesquioxide, 5 parts of glass fibre, 4 parts of calper calcium peroxide, 1,1'- (two carbon sulfenyl of tetrathio)
6 parts of bipiperidine, 4 parts of dimethacrylate.
Embodiment 2
A kind of rubber diaphragm for vapor chamber, is made up of following raw material：93 parts of butadiene-styrene rubber, 21 parts of ethylene propylene diene rubber, modification
39 parts of nitrile rubber, 18 parts of modified filler, 9 parts of silicon nitride crystal whisker, 5 parts of N cyclohexyl N' phenyl P phenylene diamine, 4,4'- methylene
5 parts of base double (2- chloroanilines), 8 parts of zinc dialkyl dithiophosphate, 3 part, toluene two of (1- myristyl) trimethylammonium bromide
2 parts of amine, 9 parts of white carbon black, 2.4 parts of aluminium sesquioxide, 4.1 parts of glass fibre, 3 parts of calper calcium peroxide, 1,1'- (two carbon sulfenyl of tetrathio)
6 parts of bipiperidine, 5 parts of dimethacrylate.
Embodiment 3
A kind of rubber diaphragm for vapor chamber, is made up of following raw material：85 parts of butadiene-styrene rubber, 17 parts of ethylene propylene diene rubber, modification
38 parts of nitrile rubber, 16 parts of modified filler, 9 parts of silicon nitride crystal whisker, 5 parts of N cyclohexyl N' phenyl P phenylene diamine, 4,4'- methylene
6.8 parts of base double (2- chloroanilines), 7 parts of zinc dialkyl dithiophosphate, 3.3 part, first of (1- myristyl) trimethylammonium bromide
2.5 parts of phenylenediamine, 10 parts of white carbon black, 2.8 parts of aluminium sesquioxide, 4 parts of glass fibre, 3 parts of calper calcium peroxide, 1,1'- (two carbon of tetrathio
Sulfenyl) 7 parts of bipiperidine, 5 parts of dimethacrylate.
Comparative example 1
Be at 1 difference of embodiment, modified nitrile rubber replaces with conventional nitrile rubber, modified filler and replaces with the tremolite.
Comparative example 2
Be at 1 difference of embodiment, modified nitrile rubber replaces with conventional nitrile rubber, modified filler and replaces with the tremolite.
Comparative example 3
Be at 1 difference of embodiment, modified nitrile rubber replaces with conventional nitrile rubber, modified filler and replaces with the tremolite.
Comparative example 4
Conventional rubber diaphragm for vapor chamber.
Routinely production method is obtained the diaphragm of rubber of above-described embodiment and comparative example.
The rubber diaphragm for vapor chamber of above-described embodiment 1-3, comparative example 1-4 is carried out performance test, as a result as shown in the table.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Tensile strength （MPa） | 26 | 28 | 27 | 21 | 23 | 22 | 16 |
| Extension at break Rate (%) | 579 | 588 | 581 | 510 | 526 | 518 | 390 |
| Resistance to ozone： 26℃、 24h, ozone Concentration 0.026% | No ftracture | No ftracture | No ftracture | No ftracture | No ftracture | No ftracture | Cracking |
| Hot air Aging：80 ℃、70h | Tensile strength changes Rate -7.6%, breaks Split elongation change Rate -19.1% | Tensile strength changes Rate -6.5%, breaks Split elongation change Rate -18.3% | Tensile strength changes Rate -8.3%, breaks Split elongation change Rate -19.5% | Tensile strength changes Rate -10.1%, breaks Split elongation change Rate -21.3% | Tensile strength changes Rate -9.3%, breaks Split elongation change Rate -20.2% | Tensile strength changes Rate -11.4%, breaks Split elongation change Rate -22% | Tensile strength becomes Rate -14%, Elongation at break Rate of change -24% |
Although above to the specific embodiment of the present invention give detailed description and illustrate, but it should be noted that we
Various equivalent changes can be carried out to above-mentioned embodiment according to the conception of the present invention and change, the function produced by which is still
Without departing from description covered spiritual when, all should be within protection scope of the present invention.
Claims (5)
1. a kind of rubber diaphragm for vapor chamber, it is characterised in that be made up of following raw material：Butadiene-styrene rubber 82-95 part, ternary second
Third rubber 16-22 part, modified nitrile rubber 35-45 part, modified filler 15-20 part, silicon nitride crystal whisker 8-12 part, N- cyclohexyl-
N'- diphenyl-para-phenylene diamine 4-8 part, 4,4' methylene bis (2- chloroaniline) 5-8 part, zinc dialkyl dithiophosphate 6-9 part,
(1- myristyl) trimethylammonium bromide 2-5 part, toluylenediamine 1-4 part, white carbon black 8-11 part, aluminium sesquioxide 2-4 part, glass
Fiber 3-6 part, calper calcium peroxide 2-6 part, 1,1'- (two carbon sulfenyl of tetrathio) bipiperidine 4-8 part, diethylene glycol dimethacrylate
Ester 2-6 part；
Described modified nitrile rubber is obtained by following methods：By nitrile rubber 30-40 part of weight portion, tetren 8-
12 parts, trithiocyanuric acid 4-6 part, 5- sulfonic acid -1,3- dimethyl isophthalate sodium salt 2-5 part, trifluoromethayl sulfonic acid calcium 0.3-
0.6 part, calcium sulfate hemihydrate 0.1-0.2 part, aluminium borate whisker 0.4-0.8 part be put on banbury, at a temperature of 82-86 DEG C,
11-15min is refined in banburying, is obtained final product after cooling；
Described modified filler is obtained by following methods：
By tremolite 30-45 part of weight portion, Pulvis Talci 12-18 part, graphite 5-9 part, diopside 12-16 part at 580-610 DEG C
At a temperature of calcined, the time be 5-6h；Grind after calcining, be subsequently adding polyvinyl alcohol 3-6 part, acetylbutyrylcellulose 5-9
Part, trifluoromethayl sulfonic acid calcium 3-5 part, 2- amino butanol 1-2 part, the mixing of metaboric acid 1.8-2.5 part, grinding, stirring, are eventually adding
Clout, mixing, grinding, stirring, obtain final product.
2. a kind of rubber diaphragm for vapor chamber according to claim 1, it is characterised in that described modified nitrile rubber is by following
Method is obtained：By 33 parts of the nitrile rubber of weight portion, 9 parts of tetren, 5 parts of trithiocyanuric acid, 5- sulfonic acid -1,3- isophthalic
4 parts of dicarboxylic acid dimethyl ester sodium salt, 0.45 part of trifluoromethayl sulfonic acid calcium, 0.17 part of calcium sulfate hemihydrate, 0.63 part of aluminium borate whisker
It is put on banbury, at a temperature of 85 DEG C, 11-15min is refined in banburying, is obtained final product after cooling.
3. a kind of rubber diaphragm for vapor chamber according to claim 1, it is characterised in that described modified filler is by following methods
It is obtained：41 parts of the tremolite of weight portion, 15 parts of Pulvis Talci, 8 parts of graphite, 15 parts of diopside are carried out at a temperature of 580-610 DEG C
Calcining, the time is 5-6h；Grind after calcining, be subsequently adding 4 parts of polyvinyl alcohol, 6 parts of acetylbutyrylcellulose, trifluoromethayl sulfonic acid
3.6 parts of calcium, 1.5 parts of 2- amino butanol, 2.1 parts of metaboric acid, mixing, grinding, stirring, clout is eventually adding, is mixed, grind, stir
Mix, obtain final product.
4. a kind of rubber diaphragm for vapor chamber according to claim 1, it is characterised in that be made up of following raw material：Fourth
88 parts of benzene rubber, 19 parts of ethylene propylene diene rubber, modified 41 parts of nitrile rubber, 16 parts of modified filler, 10 parts of silicon nitride crystal whisker, N- ring
6 parts of hexyl-N'- diphenyl-para-phenylene diamine, 7 parts of 4,4' methylene bis (2- chloroaniline), 7 parts of zinc dialkyl dithiophosphate, (1-
Myristyl) 4 parts of trimethylammonium bromide, 3 parts of toluylenediamine, 10 parts of white carbon black, 3 parts of aluminium sesquioxide, 5 parts of glass fibre, mistake
4 parts of calcium oxide, 1,1'- (two carbon sulfenyl of tetrathio) 6 parts of bipiperidine, 4 parts of dimethacrylate.
5. a kind of rubber diaphragm for vapor chamber according to claim 1, it is characterised in that be made up of following raw material：, fourth
93 parts of benzene rubber, 21 parts of ethylene propylene diene rubber, modified 39 parts of nitrile rubber, 18 parts of modified filler, 9 parts of silicon nitride crystal whisker, N- ring
5 parts of hexyl-N'- diphenyl-para-phenylene diamine, 5 parts of 4,4' methylene bis (2- chloroaniline), 8 parts of zinc dialkyl dithiophosphate, (1-
Myristyl) 3 parts of trimethylammonium bromide, 2 parts of toluylenediamine, 9 parts of white carbon black, 2.4 parts of aluminium sesquioxide, 4.1 parts of glass fibre,
3 parts of calper calcium peroxide, 1,1'- (two carbon sulfenyl of tetrathio) 6 parts of bipiperidine, 5 parts of dimethacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610927278.2A CN106432841B (en) | 2016-10-31 | 2016-10-31 | A kind of rubber diaphragm for vapor chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610927278.2A CN106432841B (en) | 2016-10-31 | 2016-10-31 | A kind of rubber diaphragm for vapor chamber |
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| Publication Number | Publication Date |
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| CN106432841A true CN106432841A (en) | 2017-02-22 |
| CN106432841B CN106432841B (en) | 2018-05-04 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004083622A (en) * | 2002-08-22 | 2004-03-18 | Jsr Corp | Rubber composition, method for producing the same, rubber molded product and method for producing the same |
| CN101302311A (en) * | 2008-07-11 | 2008-11-12 | 贵州精忠橡塑实业有限公司 | Formula of highly anti-fatigue automobile brake chamber rubber diaphragm material |
| CN102617899A (en) * | 2012-03-29 | 2012-08-01 | 程旻 | Automobile braking air chamber rubber diaphragm sizing material formula taking butadiene-styrene rubber as main sizing material |
| CN103724735A (en) * | 2013-12-16 | 2014-04-16 | 芜湖万润机械有限责任公司 | Rubber diaphragm material for automobile brake chamber |
| CN104861234A (en) * | 2015-04-28 | 2015-08-26 | 安徽同丰橡塑工业有限公司 | Wear-resistant styrene butadiene rubber material |
| CN105968461A (en) * | 2016-05-30 | 2016-09-28 | 安徽省丰蓼农业开发有限公司 | Diaphragm rubber material for water pump for farm irrigation |
-
2016
- 2016-10-31 CN CN201610927278.2A patent/CN106432841B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004083622A (en) * | 2002-08-22 | 2004-03-18 | Jsr Corp | Rubber composition, method for producing the same, rubber molded product and method for producing the same |
| CN101302311A (en) * | 2008-07-11 | 2008-11-12 | 贵州精忠橡塑实业有限公司 | Formula of highly anti-fatigue automobile brake chamber rubber diaphragm material |
| CN102617899A (en) * | 2012-03-29 | 2012-08-01 | 程旻 | Automobile braking air chamber rubber diaphragm sizing material formula taking butadiene-styrene rubber as main sizing material |
| CN103724735A (en) * | 2013-12-16 | 2014-04-16 | 芜湖万润机械有限责任公司 | Rubber diaphragm material for automobile brake chamber |
| CN104861234A (en) * | 2015-04-28 | 2015-08-26 | 安徽同丰橡塑工业有限公司 | Wear-resistant styrene butadiene rubber material |
| CN105968461A (en) * | 2016-05-30 | 2016-09-28 | 安徽省丰蓼农业开发有限公司 | Diaphragm rubber material for water pump for farm irrigation |
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| CN106432841B (en) | 2018-05-04 |
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