CN106750658A - A kind of temperature-sensing element rubber diaphragm - Google Patents
A kind of temperature-sensing element rubber diaphragm Download PDFInfo
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- CN106750658A CN106750658A CN201611225847.5A CN201611225847A CN106750658A CN 106750658 A CN106750658 A CN 106750658A CN 201611225847 A CN201611225847 A CN 201611225847A CN 106750658 A CN106750658 A CN 106750658A
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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
- C08L9/02—Copolymers with acrylonitrile
-
- 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
-
- 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
- C08J2309/02—Copolymers with acrylonitrile
-
- 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
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
-
- 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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses a kind of temperature-sensing element rubber diaphragm, its raw material includes by weight：60 80 parts of nitrile rubber, 30 50 parts of polytetrafluoroethylene (PTFE), 48 parts of isopropanol, 24 parts of trichloroethanes, 25 parts of epoxidized soybean oil, 4 10 parts of modified gelatin, 550 37 parts of coupling agent KH, 15 25 parts of magnesium hydroxide, 10 15 parts of ceramic microsphere, 10 20 parts of oil shale, 8 16 parts of silicon nitride calcines 25 45 parts of montmorillonite, 24 parts of cumyl peroxide, 12 parts of benzoyl peroxide, 36 parts of accelerator, 8 12 parts of zinc oxide, 48 parts of magnesia, 15 20 parts of microencapsulated powder oil, 28 12 parts of fire retardant HZR, 1.5 2.5 parts of age resistor ODA.Waterproof of the invention, anti-wear performance are excellent, and anti-fatigue performance is outstanding, and resistance to deformation, anti-wear performance are good, long service life.
Description
Technical field
The present invention relates to technical field of sealing technology, more particularly to a kind of temperature-sensing element rubber diaphragm.
Background technology
Temperature control valve action is bad to be caused profit temperature too high and influence equipment normal work.The failure of current temperature-sensing valve is
As one of inertial defect for perplexing each locomotive depot.Wherein temperature-sensing element failure is the main cause of temperature control defective valve.And temperature-sensitive
Component failure is commonly considered as caused by rubber diaphragm failure.Rubber is flexible, but elastic telescopic also should degree of having, if
Rubber diaphragm deformed the change of conference sealing state, and effect is deteriorated.
The content of the invention
Based on the technical problem that background technology is present, the present invention proposes a kind of temperature-sensing element rubber diaphragm, resilience
Can be outstanding, anti-deformation is good, and anti-fatigue performance is outstanding, and waterproof, anti-wear performance are excellent, long service life.
A kind of temperature-sensing element rubber diaphragm proposed by the present invention, its raw material includes by weight：Nitrile rubber 60-80
Part, polytetrafluoroethylene (PTFE) 30-50 parts, isopropanol 4-8 parts, trichloroethanes 2-4 parts, epoxidized soybean oil 2-5 parts, modified gelatin 4-10
Part, 3-7 parts of coupling agent KH-550, magnesium hydroxide 15-25 parts, ceramic microsphere 10-15 parts, oil shale 10-20 parts, silicon nitride 8-
16 parts, calcine 25-45 parts of montmorillonite, cumyl peroxide 2-4 parts, benzoyl peroxide 1-2 parts, accelerator 3-6 parts, oxidation
Zinc 8-12 parts, magnesia 4-8 parts, microencapsulated powder oil 15-20 parts, 8-12 parts of fire retardant HZR-2, age resistor ODA 1.5-2.5
Part.
Preferably, epoxidized soybean oil, modified gelatin, coupling agent KH-550, magnesium hydroxide, ceramic microsphere, oil shale, nitridation
Silicon, the weight ratio of calcining montmorillonite are 3-4：6-8：4-6：18-22：12-14：12-18：10-14：30-40.
Preferably, cumyl peroxide, benzoyl peroxide, accelerator, zinc oxide, the weight ratio of magnesia are 2.5-
3.5：1.2-1.8：4-5：9-11：5-7.
Preferably, its raw material includes by weight：Nitrile rubber 65-75 parts, polytetrafluoroethylene (PTFE) 35-45 parts, isopropanol 5-7
Part, trichloroethanes 2.5-3.5 parts, epoxidized soybean oil 3-4 parts, modified gelatin 6-8 parts, 4-6 parts of coupling agent KH-550, hydroxide
Magnesium 18-22 parts, ceramic microsphere 12-14 parts, oil shale 12-18 parts, silicon nitride 10-14 parts, calcine 30-40 parts of montmorillonite, peroxide
Change 2.5-3.5 parts of diisopropylbenzene (DIPB), benzoyl peroxide 1.2-1.8 parts, accelerator 4-5 parts, zinc oxide 9-11 parts, magnesia 5-7
Part, microencapsulated powder oil 16-18 parts, 9-11 parts of fire retardant HZR-2,1.8-2.2 parts of age resistor ODA.
Preferably, modified gelatin is prepared using following technique：Glutamic acid feeding combined stirring is obtained pre-
System material；Add absolute ethyl alcohol to carry out ball milling bamboo powder, hydrogen peroxide, water stirring, filtering, washing, filter, washing, air-tight state
Heat up, insulation, cooling, filtering, washing adds gelatin, water, heats up, stirring, add carbodiimides, the stirring of prefabricated material, do
Dry, crushing obtains modified gelatin.
Preferably, modified gelatin is prepared using following technique：8-16 parts of glutamic acid is sent into 30-50 parts of concentration by weight
For the combined stirring of 1-2.5mol/L obtains prefabricated material；By weight by 6-12 parts of bamboo powder, 8-16 parts of peroxidating
Hydrogen, 60-80 part of water stirring, filtering, washing adds 30-50 parts of absolute ethyl alcohol to carry out ball milling, filters, washing, air-tight state liter
Temperature, insulation, cooling is filtered, and washing adds 4-8 parts of gelatin, 50-70 parts of water, and heat up stirring, 1-2 parts of carbodiimides of addition,
4-10 parts of prefabricated material stirring, dry, pulverize and obtain modified gelatin.
Preferably, modified gelatin is prepared using following technique：8-16 parts of glutamic acid is sent into 30-50 parts of concentration by weight
For the combined of 1-2.5mol/L stirs 20-40min, whipping temp is 65-75 DEG C, obtains prefabricated material；By weight
6-12 parts of bamboo powder, 8-16 parts of hydrogen peroxide, 60-80 parts of water stirring 60-100min, filtering, washing are added 30-50 parts of nothing by part
Water-ethanol carries out ball milling 20-40min, filtering, washing, and air-tight state is warming up to 650-850 DEG C of insulation 25-45min, cooling, mistake
Filter, washing adds 4-8 parts of gelatin, 50-70 parts of water, is warming up to 70-78 DEG C of stirring 40-80min, adds 1-2 parts of carbonization two sub-
Amine, 4-10 part of prefabricated material stirring 40-60min, whipping temp is 80-100 DEG C, dry, pulverize and obtains modified gelatin.
The present invention is obtained using conventional fabrication process.
In modified gelatin of the invention, bamboo powder under certain condition through hydrogen peroxide, Urea treatment after, not only with height compare
Surface area, pore volume high, surface are smooth, while surface is rich in active group, and contain great amount of hydroxy group, carboxylic in gelatin molecule structure
Base and amino, add carbodiimides to promote to be crosslinked between polypeptide and pretreatment bamboo powder in gelatin, while glutamic acid also enters one
Amino and carboxyl in step cross-linked gelatin, make modified gelatin not only sticky good, and water proofing property is fabulous, and wearability is good, filling capacity
It is excellent；Coupling agent KH-550 and calcining montmorillonite, ceramic microsphere, silicon nitride, oil shale, magnesium hydroxide mating reaction, reduce
Elastomeric material strand spatial joint clearance, resistance to deformation, not only anti-wear performance is good, and waterproof, and filling capacity is excellent, then coordinates modified
Gelatin, epoxidized soybean oil effect, can effectively raise anti-fatigue performance of the present invention, and waterproof, wear-resisting and filling capacity are further
Enhancing, rebound performance is good.
Specific embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of temperature-sensing element rubber diaphragm proposed by the present invention, its raw material includes by weight：60 parts of nitrile rubber, gathers
50 parts of tetrafluoroethene, 4 parts of isopropanol, 4 parts of trichloroethanes, 2 parts of epoxidized soybean oil, 10 parts of modified gelatin, coupling agent KH-550 3
Part, 25 parts of magnesium hydroxide, 10 parts of ceramic microsphere, 20 parts of oil shale, 8 parts of silicon nitride calcines 45 parts of montmorillonite, peroxidating diisopropyl
2 parts of benzene, 2 parts of benzoyl peroxide, 3 parts of accelerator, 12 parts of zinc oxide, 4 parts of magnesia, 20 parts of microencapsulated powder oil, fire retardant
2.5 parts of 8 parts of HZR-2, age resistor ODA.
Embodiment 2
A kind of temperature-sensing element rubber diaphragm proposed by the present invention, its raw material includes by weight：80 parts of nitrile rubber, gathers
30 parts of tetrafluoroethene, 8 parts of isopropanol, 2 parts of trichloroethanes, 5 parts of epoxidized soybean oil, 4 parts of modified gelatin, coupling agent KH-550 7
Part, 15 parts of magnesium hydroxide, 15 parts of ceramic microsphere, 10 parts of oil shale, 16 parts of silicon nitride calcines 25 parts of montmorillonite, and peroxidating two is different
4 parts of propyl benzene, 1 part of benzoyl peroxide, 6 parts of accelerator, 8 parts of zinc oxide, 8 parts of magnesia, 15 parts of microencapsulated powder oil, fire retardant
HZR-212 parts, 1.5 parts of age resistor ODA.
Modified gelatin is prepared using following technique：Glutamic acid feeding combined stirring is obtained into prefabricated material；Will
Bamboo powder, hydrogen peroxide, water stirring, filtering, washing add absolute ethyl alcohol to carry out ball milling, filter, and washing, air-tight state heats up, and protects
Temperature, cooling, filtering, washing adds gelatin, water, heats up, stirring, adds carbodiimides, the stirring of prefabricated material, dry, pulverize
To modified gelatin.
Embodiment 3
A kind of temperature-sensing element rubber diaphragm proposed by the present invention, its raw material includes by weight：65 parts of nitrile rubber, gathers
45 parts of tetrafluoroethene, 5 parts of isopropanol, 3.5 parts of trichloroethanes, 3 parts of epoxidized soybean oil, 8 parts of modified gelatin, coupling agent KH-550 4
Part, 22 parts of magnesium hydroxide, 12 parts of ceramic microsphere, 18 parts of oil shale, 10 parts of silicon nitride calcines 40 parts of montmorillonite, and peroxidating two is different
2.5 parts of propyl benzene, 1.8 parts of benzoyl peroxide, 4 parts of accelerator, 11 parts of zinc oxide, 5 parts of magnesia, 18 parts of microencapsulated powder oil,
2.2 parts of 9 parts of fire retardant HZR-2, age resistor ODA.
Modified gelatin is prepared using following technique：It is 1.5mol/L's that 12 parts of glutamic acid are sent into 40 parts of concentration by weight
Combined stirring obtains prefabricated material；By weight by 9 parts of bamboo powders, 12 parts of hydrogen peroxide, 70 parts of water stirrings, filtering,
Washing, adds 40 parts of absolute ethyl alcohols to carry out ball milling, filters, and washing, air-tight state heats up, insulation, cooling, filtering, and washing is added
6 parts of gelatin, 60 parts of water, heat up stirring, adds 1.5 parts of carbodiimides, 7 parts of prefabricated material stirrings, dry, pulverize and obtains modified bright
Glue.
Embodiment 4
A kind of temperature-sensing element rubber diaphragm proposed by the present invention, its raw material includes by weight：75 parts of nitrile rubber, gathers
35 parts of tetrafluoroethene, 7 parts of isopropanol, 2.5 parts of trichloroethanes, 4 parts of epoxidized soybean oil, 6 parts of modified gelatin, coupling agent KH-550 6
Part, 18 parts of magnesium hydroxide, 14 parts of ceramic microsphere, 12 parts of oil shale, 14 parts of silicon nitride calcines 30 parts of montmorillonite, and peroxidating two is different
3.5 parts of propyl benzene, 1.2 parts of benzoyl peroxide, 5 parts of accelerator, 9 parts of zinc oxide, 7 parts of magnesia, 16 parts of microencapsulated powder oil, resistance
11 parts of combustion agent HZR-2,1.8 parts of age resistor ODA.
Modified gelatin is prepared using following technique：It is the salt of 1mol/L that 8 parts of glutamic acid are sent into 50 parts of concentration by weight
Aqueous acid mixes 40min, and whipping temp is 65 DEG C, obtains prefabricated material；By weight by 12 parts of bamboo powders, 8 parts of peroxidating
Hydrogen, 80 parts of water stirring 60min, filtering, washing add 50 parts of absolute ethyl alcohols to carry out ball milling 20min, filter, washing, air-tight state
850 DEG C of insulation 25min are warming up to, cooling, filtering, washing adds 8 parts of gelatin, 50 parts of water, are warming up to 78 DEG C of stirring 40min, plus
Enter 2 parts of carbodiimides, 4 parts of prefabricated material stirring 60min, whipping temp is 80 DEG C, dry, pulverize and obtains modified gelatin.
Embodiment 5
A kind of temperature-sensing element rubber diaphragm proposed by the present invention, its raw material includes by weight：70 parts of nitrile rubber, gathers
40 parts of tetrafluoroethene, 6 parts of isopropanol, 3 parts of trichloroethanes, 3.5 parts of epoxidized soybean oil, 7 parts of modified gelatin, coupling agent KH-550 5
Part, 20 parts of magnesium hydroxide, 13 parts of ceramic microsphere, 15 parts of oil shale, 12 parts of silicon nitride calcines 35 parts of montmorillonite, and peroxidating two is different
3 parts of propyl benzene, 1.5 parts of benzoyl peroxide, 4.5 parts of accelerator, 10 parts of zinc oxide, 6 parts of magnesia, 17 parts of microencapsulated powder oil,
2 parts of 10 parts of fire retardant HZR-2, age resistor ODA.
Modified gelatin is prepared using following technique：It is 2.5mol/L's that 16 parts of glutamic acid are sent into 30 parts of concentration by weight
Combined stirs 20min, and whipping temp is 75 DEG C, obtains prefabricated material；By weight by 6 parts of bamboo powders, 16 parts of peroxides
Change hydrogen, 60 parts of water stirring 100min, filtering, washing adds 30 parts of absolute ethyl alcohols to carry out ball milling 40min, filters, and washing is closed
State is warming up to 650 DEG C of insulation 45min, and cooling, filtering, washing adds 4 parts of gelatin, 70 parts of water, is warming up to 70 DEG C of stirrings
80min, adds 1 part of carbodiimides, 10 parts of prefabricated material stirring 40min, and whipping temp is 100 DEG C, dry, pulverize and is modified
Gelatin.
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 (7)
1. a kind of temperature-sensing element rubber diaphragm, it is characterised in that its raw material includes by weight：Nitrile rubber 60-80 parts, gather
Tetrafluoroethene 30-50 parts, isopropanol 4-8 parts, trichloroethanes 2-4 parts, epoxidized soybean oil 2-5 parts, modified gelatin 4-10 parts, coupling
3-7 parts of agent KH-550, ceramic microsphere 10-15 parts, oil shale 10-20 parts, silicon nitride 8-16 parts, forges by magnesium hydroxide 15-25 parts
Burn 25-45 parts of montmorillonite, cumyl peroxide 2-4 parts, benzoyl peroxide 1-2 parts, accelerator 3-6 parts, zinc oxide 8-12
Part, magnesia 4-8 parts, microencapsulated powder oil 15-20 parts, 8-12 parts of fire retardant HZR-2,1.5-2.5 parts of age resistor ODA.
2. temperature-sensing element rubber diaphragm according to claim 1, it is characterised in that epoxidized soybean oil, modified gelatin, coupling
Agent KH-550, magnesium hydroxide, ceramic microsphere, oil shale, silicon nitride, the weight ratio of calcining montmorillonite are 3-4：6-8：4-6：18-
22：12-14：12-18：10-14：30-40.
3. temperature-sensing element rubber diaphragm according to claim 1 or claim 2, it is characterised in that cumyl peroxide, peroxidating
Benzoyl, accelerator, zinc oxide, the weight ratio of magnesia are 2.5-3.5：1.2-1.8：4-5：9-11：5-7.
4. the temperature-sensing element rubber diaphragm according to claim any one of 1-3, it is characterised in that its raw material is wrapped by weight
Include：Nitrile rubber 65-75 parts, polytetrafluoroethylene (PTFE) 35-45 parts, isopropanol 5-7 parts, trichloroethanes 2.5-3.5 parts, epoxidized soybean oil
3-4 parts, modified gelatin 6-8 parts, 4-6 parts of coupling agent KH-550, magnesium hydroxide 18-22 parts, ceramic microsphere 12-14 parts, oil shale
12-18 parts, silicon nitride 10-14 parts, calcine 30-40 parts of montmorillonite, cumyl peroxide 2.5-3.5 parts, benzoyl peroxide
1.2-1.8 parts, accelerator 4-5 parts, zinc oxide 9-11 parts, magnesia 5-7 parts, microencapsulated powder oil 16-18 parts, fire retardant HZR-
29-11 parts, 1.8-2.2 parts of age resistor ODA.
5. the temperature-sensing element rubber diaphragm according to claim any one of 1-4, it is characterised in that modified gelatin is using as follows
It is prepared by technique：Glutamic acid feeding combined stirring is obtained into prefabricated material；By bamboo powder, hydrogen peroxide, water stirring, mistake
Filter, washing adds absolute ethyl alcohol to carry out ball milling, filters, and washing, air-tight state heats up, insulation, cooling, filtering, and washing is added
Gelatin, water, heat up, stirring, add carbodiimides, the stirring of prefabricated material, dry, pulverize and obtain modified gelatin.
6. the temperature-sensing element rubber diaphragm according to claim any one of 1-5, it is characterised in that modified gelatin is using as follows
It is prepared by technique：8-16 parts of glutamic acid is sent into 30-50 parts of concentration for the combined of 1-2.5mol/L is stirred by weight
Mix and obtain prefabricated material；By weight by 6-12 parts of bamboo powder, 8-16 parts of hydrogen peroxide, 60-80 parts of water stirring, filtering, washing is added
30-50 parts of absolute ethyl alcohol carries out ball milling, and filtering, washing, air-tight state heats up, insulation, cooling, filtering, and washing adds 4-8 parts
Gelatin, 50-70 part water, heat up stirring, adds 1-2 parts of carbodiimides, 4-10 parts of prefabricated material stirring, dry, pulverize and is changed
Property gelatin.
7. the temperature-sensing element rubber diaphragm according to claim any one of 1-6, it is characterised in that modified gelatin is using as follows
It is prepared by technique：8-16 parts of glutamic acid is sent into 30-50 parts of concentration for the combined of 1-2.5mol/L is stirred by weight
20-40min is mixed, whipping temp is 65-75 DEG C, obtains prefabricated material；By weight by 6-12 parts of bamboo powder, 8-16 parts of hydrogen peroxide,
60-80 parts of water stirs 60-100min, and filtering, washing adds 30-50 parts of absolute ethyl alcohol to carry out ball milling 20-40min, filters, washes
Wash, air-tight state is warming up to 650-850 DEG C of insulation 25-45min, cooling, filtering, washing, add 4-8 parts of gelatin, 50-70 parts
Water, is warming up to 70-78 DEG C of stirring 40-80min, adds 1-2 parts of carbodiimides, 4-10 parts of prefabricated material stirring 40-60min, stirs
Temperature is mixed for 80-100 DEG C, be dry, pulverize and obtained modified gelatin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611225847.5A CN106750658A (en) | 2016-12-27 | 2016-12-27 | A kind of temperature-sensing element rubber diaphragm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611225847.5A CN106750658A (en) | 2016-12-27 | 2016-12-27 | A kind of temperature-sensing element rubber diaphragm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109177563A (en) * | 2018-08-17 | 2019-01-11 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of blotting material |
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| CN103319819A (en) * | 2013-05-27 | 2013-09-25 | 镇江春环密封件集团有限公司 | Rubber sealing member |
| CN103627048A (en) * | 2013-11-01 | 2014-03-12 | 国网河南省电力公司漯河供电公司 | Compression-resistant, abrasion-resistant and corrosion-resistant transformer seal ring as well as production method thereof |
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