CN106750660A - A kind of high pressure resistant hydraulic jack U-shaped sealing ring and preparation method thereof - Google Patents
A kind of high pressure resistant hydraulic jack U-shaped sealing ring and preparation method thereof Download PDFInfo
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- CN106750660A CN106750660A CN201611256636.8A CN201611256636A CN106750660A CN 106750660 A CN106750660 A CN 106750660A CN 201611256636 A CN201611256636 A CN 201611256636A CN 106750660 A CN106750660 A CN 106750660A
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- parts
- sealing ring
- hydraulic jack
- high pressure
- shaped sealing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/06—Sulfur
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
-
- 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
Abstract
The invention discloses a kind of U-shaped sealing ring of high pressure resistant hydraulic jack, it is composed of the following components in parts by weight：70 100 parts of nitrile rubber, 15 35 parts of magnesinm methacrylate, 20 45 parts of carbon black, 8 15 parts of sulphur, 36 parts of o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers 25 parts of dibutyl ester of acid, 210 25 parts of assistant crosslinking agent HVA, 15 parts of vulcanizing agent DCP10,3 10 parts of age resistor.The method of present invention black-reinforced improves the hardness and pressure-resistant performance of nitrile rubber, choose suitable vulcanizing system, antiaging system, Plasticising system and add a certain amount of assistant crosslinking agent to improve the reinforcing property to rubber, magnesinm methacrylate and a certain amount of carbon black synergism greatly improve the pressure-resistant performance of nitrile rubber, make the voltage endurance capability up to 15Mpa of the U-shaped sealing ring of high pressure resistant hydraulic jack obtained in this rubber compounding.
Description
Technical field
The present invention relates to seal field, and in particular to a kind of high pressure resistant hydraulic jack U-shaped sealing ring and its preparation side
Method.
Background technology
Seal be prevent fluid or solia particle from leaked between adjacent faying face and prevent introduced contaminants such as dust with
Moisture etc. invades the material or part of the parts inside machinery equipment.Though seal is small, its effect make it national defence,
Basic components and accessory in the national economy main industries such as chemical industry, oil, coal, communications and transportation and machine-building, in its people
Occupy considerable status in economic development.
In Hydraulic Elements, the seal request of hydraulic jack is comparing high, particularly some special hydraulic cylinders.Hydraulic cylinder
Do not only have static seal, more positions are dynamic sealings, and operating pressure is high, and this requires that the sealing property of seal will get well,
Wear-resistant, the accommodation to temperature is big, it is desirable to which elasticity is good, is permanently deformed small, there is appropriate mechanical strength, and frictional resistance is small,
Easy to manufacture and assembly and disassembly, can improve sealability and beneficial to automatic compensation abrasion with the rising of pressure.
The U-shaped circle for being generally used for hydraulic jack can only be used when operating pressure is less than 10MPa, the hydraulic oil high to pressure
Cylinder is not applied to, therefore, the use of U-shaped circle is extremely limited, and the pressure-resistant performance for improving U-shaped circle is to improve hydraulic jack U-shaped
Enclose an important channel in life-span.
The content of the invention
The invention provides a kind of high pressure resistant hydraulic jack U-shaped sealing ring and preparation method thereof, U-shaped sealing ring is improve
Voltage endurance capability, make its compression resistance up to 15Mpa.
To realize object above, the present invention is practiced by the following technical programs：
A kind of U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：Nitrile rubber 70-100
Part, magnesinm methacrylate 15-35 parts, carbon black 20-45 parts, sulphur 8-15 parts, o-phthalic acid dibutyl ester 3-6 parts, certain herbaceous plants with big flowers acid two is pungent
Fat 2-5 parts, assistant crosslinking agent HVA-210-25 parts, vulcanizing agent DCP10-15 parts, age resistor 3-10 parts.
Preferably, the U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：Nitrile rubber
80-90 parts, magnesinm methacrylate 20-30 parts, carbon black 30-40 parts, sulphur 10-13 parts, o-phthalic acid dibutyl ester 4-5 parts, certain herbaceous plants with big flowers
Sour dibutyl ester 3-4 parts, assistant crosslinking agent HVA-215-20 parts, vulcanizing agent DCP12-14 parts, age resistor 5-8 parts.
Preferably, the U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：Nitrile rubber
85 parts, 25 parts of magnesinm methacrylate, 35 parts of carbon black, 12 parts of sulphur, 4.5 parts of o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers acid dibutyl ester 3.5
Part, assistant crosslinking agent HVA-217 parts, vulcanizing agent DCP13 parts, 6 parts of age resistor.
Preferably, the carbon black is the mixture of N774 and N330.
Preferably, the age resistor is 4010NA and anti-aging agent RD.
The high pressure resistant hydraulic jack preparation method of U-shaped sealing ring, comprises the following steps：
(1) nitrile rubber is placed in mill, rubber of plasticating, at 70-90 DEG C, the time of plasticating is for 3- for temperature control
5min；
(2) broken-down rubber is placed in banbury, adds magnesinm methacrylate, carbon black, sulphur, o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers
Sour dibutyl ester, assistant crosslinking agent HVA-2, vulcanizing agent DCP, age resistor mixing are made elastomeric compound, and melting temperature is controlled at 130-150 DEG C
Hereinafter, mixing time is 10-15min；
(3) elastomeric compound is placed in vulcanizer and is vulcanized, curing temperature is 150-160 DEG C, and pressure limit is in 20-50Mpa, sulphur
Change time control in 10-15min.
Beneficial effect of the present invention：The method of present invention black-reinforced improves the hardness and pressure-resistant performance of nitrile rubber,
Choose suitable vulcanizing system, antiaging system, Plasticising system and add a certain amount of assistant crosslinking agent to improve the benefit to rubber
Epistasis energy, magnesinm methacrylate and a certain amount of carbon black synergism greatly improve the pressure-resistant performance of nitrile rubber, match somebody with somebody this rubber
The obtained high pressure resistant hydraulic jack in side is up to 15Mpa with the voltage endurance capability of U-shaped sealing ring.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of protection of the invention.
Embodiment 1：
A kind of U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：70 parts of nitrile rubber, first
15 parts of base Magnesium Acrylate Prepared, carbon black N77410 parts, carbon black N33010 parts, 3 parts of o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers 2 parts of dibutyl ester of acid is helped
Crosslinking agent HVA-210 parts, vulcanizing agent DCP10 parts, 1 part of antioxidant 4010NA, 2 parts of anti-aging agent RD.
The high pressure resistant hydraulic jack preparation method of U-shaped sealing ring, comprises the following steps：
(1) nitrile rubber is placed in mill, rubber of plasticating, at 70-90 DEG C, the time of plasticating is for 3- for temperature control
5min；
(2) broken-down rubber is placed in banbury, adds magnesinm methacrylate, carbon black N774, carbon black N330, sulphur, adjacent benzene two
Formic acid dibutyl ester, certain herbaceous plants with big flowers acid dibutyl ester, assistant crosslinking agent HVA-2, vulcanizing agent DCP, age resistor mixing are made elastomeric compound, melting temperature control
Below 130-150 DEG C, mixing time is 10-15min to system；
(3) elastomeric compound is placed in vulcanizer and is vulcanized, curing temperature is 150-160 DEG C, and pressure limit is in 20-50Mpa, sulphur
Change time control in 10-15min.
Embodiment 2：
A kind of U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：100 parts of nitrile rubber, first
35 parts of base Magnesium Acrylate Prepared, carbon black N77430 parts, carbon black N33015 parts, 15 parts of sulphur, 6 parts of o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers acid two
5 parts of pungent fat, assistant crosslinking agent HVA-225 parts, vulcanizing agent DCP15 parts, 5 parts of antioxidant 4010NA, 5 parts of anti-aging agent RD.
The high pressure resistant hydraulic jack preparation method of U-shaped sealing ring, comprises the following steps：
(1) nitrile rubber is placed in mill, rubber of plasticating, at 70-90 DEG C, the time of plasticating is for 3- for temperature control
5min；
(2) broken-down rubber is placed in banbury, adds magnesinm methacrylate, carbon black N774, carbon black N330, sulphur, adjacent benzene two
Formic acid dibutyl ester, certain herbaceous plants with big flowers acid dibutyl ester, assistant crosslinking agent HVA-2, vulcanizing agent DCP, age resistor mixing are made elastomeric compound, melting temperature control
Below 130-150 DEG C, mixing time is 10-15min to system；
(3) elastomeric compound is placed in vulcanizer and is vulcanized, curing temperature is 150-160 DEG C, and pressure limit is in 20-50Mpa, sulphur
Change time control in 10-15min.
Embodiment 3：
A kind of U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：80 parts of nitrile rubber, first
20 parts of base Magnesium Acrylate Prepared, carbon black N77415 parts, carbon black N33015 parts, 10 parts of sulphur, 4 parts of o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers acid two
3 parts of pungent fat, assistant crosslinking agent HVA-215 parts, vulcanizing agent DCP12 parts, 2 parts of antioxidant 4010NA, 3 parts of anti-aging agent RD.
The high pressure resistant hydraulic jack preparation method of U-shaped sealing ring, comprises the following steps：
(1) nitrile rubber is placed in mill, rubber of plasticating, at 70-90 DEG C, the time of plasticating is for 3- for temperature control
5min；
(2) broken-down rubber is placed in banbury, adds magnesinm methacrylate, carbon black N774, carbon black N330, sulphur, adjacent benzene two
Formic acid dibutyl ester, certain herbaceous plants with big flowers acid dibutyl ester, assistant crosslinking agent HVA-2, vulcanizing agent DCP, age resistor mixing are made elastomeric compound, melting temperature control
Below 130-150 DEG C, mixing time is 10-15min to system；
(3) elastomeric compound is placed in vulcanizer and is vulcanized, curing temperature is 150-160 DEG C, and pressure limit is in 20-50Mpa, sulphur
Change time control in 10-15min.
Embodiment 4：
A kind of U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：90 parts of nitrile rubber, first
30 parts of base Magnesium Acrylate Prepared, carbon black N77420 parts, carbon black N33020 parts, 13 parts of sulphur, 5 parts of o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers acid two
4 parts of pungent fat, assistant crosslinking agent HVA-220 parts, vulcanizing agent DCP14 parts, 4 parts of antioxidant 4010NA, 4 parts of anti-aging agent RD.
The high pressure resistant hydraulic jack preparation method of U-shaped sealing ring, comprises the following steps：
(1) nitrile rubber is placed in mill, rubber of plasticating, at 70-90 DEG C, the time of plasticating is for 3- for temperature control
5min；
(2) broken-down rubber is placed in banbury, adds magnesinm methacrylate, carbon black N774, carbon black N330, sulphur, adjacent benzene two
Formic acid dibutyl ester, certain herbaceous plants with big flowers acid dibutyl ester, assistant crosslinking agent HVA-2, vulcanizing agent DCP, age resistor mixing are made elastomeric compound, melting temperature control
Below 130-150 DEG C, mixing time is 10-15min to system；
(3) elastomeric compound is placed in vulcanizer and is vulcanized, curing temperature is 150-160 DEG C, and pressure limit is in 20-50Mpa, sulphur
Change time control in 10-15min.
Embodiment 5：
A kind of U-shaped sealing ring of high pressure resistant hydraulic jack, is composed of the following components in parts by weight：85 parts of nitrile rubber, first
25 parts of base Magnesium Acrylate Prepared, carbon black N77420 parts, carbon black N33015 parts, 12 parts of sulphur, 4.5 parts of o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers acid
3.5 parts of dibutyl ester, assistant crosslinking agent HVA-217 parts, vulcanizing agent DCP13 parts, 3 parts of antioxidant 4010NA, 3 parts of anti-aging agent RD.
The high pressure resistant hydraulic jack preparation method of U-shaped sealing ring, comprises the following steps：
(1) nitrile rubber is placed in mill, rubber of plasticating, at 70-90 DEG C, the time of plasticating is for 3- for temperature control
5min；
(2) broken-down rubber is placed in banbury, adds magnesinm methacrylate, carbon black N774, carbon black N330, sulphur, adjacent benzene two
Formic acid dibutyl ester, certain herbaceous plants with big flowers acid dibutyl ester, assistant crosslinking agent HVA-2, vulcanizing agent DCP, age resistor mixing are made elastomeric compound, melting temperature control
Below 130-150 DEG C, mixing time is 10-15min to system；
(3) elastomeric compound is placed in vulcanizer and is vulcanized, curing temperature is 150-160 DEG C, and pressure limit is in 20-50Mpa, sulphur
Change time control in 10-15min.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these modification or
Replace, do not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (6)
1. a kind of U-shaped sealing ring of high pressure resistant hydraulic jack, it is characterised in that be composed of the following components in parts by weight：Butyronitrile rubber
Glue 70-100 parts, magnesinm methacrylate 15-35 parts, carbon black 20-45 parts, sulphur 8-15 parts, o-phthalic acid dibutyl ester 3-6 parts,
Certain herbaceous plants with big flowers 2-5 parts, assistant crosslinking agent HVA-210-25 parts, vulcanizing agent DCP10-15 parts, age resistor 3-10 parts of dibutyl ester of acid.
2. the U-shaped sealing ring of high pressure resistant hydraulic jack as claimed in claim 1, it is characterised in that by following weight portion into
It is grouped into：Nitrile rubber 80-90 parts, magnesinm methacrylate 20-30 parts, carbon black 30-40 parts, sulphur 10-13 parts, phthalic acid
Dibutyl ester 4-5 parts, certain herbaceous plants with big flowers 3-4 parts of dibutyl ester of acid, assistant crosslinking agent HVA-215-20 parts, vulcanizing agent DCP12-14 parts, age resistor 5-8
Part.
3. the U-shaped sealing ring of high pressure resistant hydraulic jack as claimed in claim 2, it is characterised in that by following weight portion into
It is grouped into：85 parts of nitrile rubber, 25 parts of magnesinm methacrylate, 35 parts of carbon black, 12 parts of sulphur, 4.5 parts of o-phthalic acid dibutyl ester,
Certain herbaceous plants with big flowers 3.5 parts of dibutyl ester of acid, assistant crosslinking agent HVA-217 parts, vulcanizing agent DCP13 parts, 6 parts of age resistor.
4. the U-shaped sealing ring of high pressure resistant hydraulic jack as claimed in claim 3, it is characterised in that the carbon black be N774 with
The mixture of N330.
5. the U-shaped sealing ring of high pressure resistant hydraulic jack as claimed in claim 3, it is characterised in that the age resistor is
4010NA and anti-aging agent RD.
6. a kind of high pressure resistant hydraulic jack as described in claim 1-5 is any preparation method of U-shaped sealing ring, its feature exists
In comprising the following steps：
(1) nitrile rubber is placed in mill, rubber of plasticating, at 70-90 DEG C, the time of plasticating is for 3-5min for temperature control；
(2) broken-down rubber is placed in banbury, adds magnesinm methacrylate, carbon black, sulphur, o-phthalic acid dibutyl ester, certain herbaceous plants with big flowers acid two
Pungent fat, assistant crosslinking agent HVA-2, vulcanizing agent DCP, age resistor mixing are made elastomeric compound, melting temperature control 130-150 DEG C with
Under, mixing time is 10-15min；
(3) elastomeric compound is placed in vulcanizer and is vulcanized, curing temperature is 150-160 DEG C, and pressure limit is in 20-50Mpa, vulcanization
Between control in 10-15min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256636.8A CN106750660A (en) | 2016-12-30 | 2016-12-30 | A kind of high pressure resistant hydraulic jack U-shaped sealing ring and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611256636.8A CN106750660A (en) | 2016-12-30 | 2016-12-30 | A kind of high pressure resistant hydraulic jack U-shaped sealing ring and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106750660A true CN106750660A (en) | 2017-05-31 |
Family
ID=58954423
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611256636.8A Pending CN106750660A (en) | 2016-12-30 | 2016-12-30 | A kind of high pressure resistant hydraulic jack U-shaped sealing ring and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107955103A (en) * | 2017-11-29 | 2018-04-24 | 宁波泰科威橡胶科技有限公司 | A kind of washing machine inflow valve seal nitrile rubber and preparation method thereof |
| CN110684250A (en) * | 2019-11-19 | 2020-01-14 | 江苏创合橡塑有限公司 | Ultrahigh-hardness nitrile rubber composition material and preparation method thereof |
| CN113321890A (en) * | 2021-06-16 | 2021-08-31 | 大庆市东蕾橡胶制品有限公司 | Shale oil-reservoir drilling cylinder sleeve sealing ring and preparation method thereof |
| CN113896960A (en) * | 2021-10-22 | 2022-01-07 | 青岛三祥科技股份有限公司 | Rubber composition, application thereof and rubber core glue injection |
-
2016
- 2016-12-30 CN CN201611256636.8A patent/CN106750660A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107955103A (en) * | 2017-11-29 | 2018-04-24 | 宁波泰科威橡胶科技有限公司 | A kind of washing machine inflow valve seal nitrile rubber and preparation method thereof |
| CN110684250A (en) * | 2019-11-19 | 2020-01-14 | 江苏创合橡塑有限公司 | Ultrahigh-hardness nitrile rubber composition material and preparation method thereof |
| CN113321890A (en) * | 2021-06-16 | 2021-08-31 | 大庆市东蕾橡胶制品有限公司 | Shale oil-reservoir drilling cylinder sleeve sealing ring and preparation method thereof |
| CN113896960A (en) * | 2021-10-22 | 2022-01-07 | 青岛三祥科技股份有限公司 | Rubber composition, application thereof and rubber core glue injection |
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