CN109679168A - A kind of chemical pump nitrile rubber sealing element - Google Patents
A kind of chemical pump nitrile rubber sealing element Download PDFInfo
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- CN109679168A CN109679168A CN201910023317.XA CN201910023317A CN109679168A CN 109679168 A CN109679168 A CN 109679168A CN 201910023317 A CN201910023317 A CN 201910023317A CN 109679168 A CN109679168 A CN 109679168A
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- nitrile rubber
- sealing element
- rubber sealing
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- chemical pump
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K2201/011—Nanostructured additives
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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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Graft Or Block Polymers (AREA)
Abstract
The invention discloses a kind of chemical pump nitrile rubber sealing elements, it is related to chemical industry pump technical field, is made of following component: nitrile rubber, modified graft copolymer, nano zine oxide, attapulgite, n-butyl sebacate, diaryl-p-phenylenediamine, graphene, sulphur, γ mercaptopropyitrimethoxy silane, anti-aging agent；Chemical pump prepared by the present invention has relatively low infiltration coefficient and higher chemical stability with nitrile rubber sealing element, can prevent the diffusion of vapor, oxygen and sulfur dioxide etc., and abrasion resistance properties are good.
Description
Technical field
The invention belongs to chemical industry pump technical fields, and in particular to a kind of chemical pump nitrile rubber sealing element.
Background technique
Chemical industry occupies very important position in national economy, chemical pump as crucial corollary equipment also increasingly
It is concerned by people, since the characteristic of chemical medium is intricate, the requirement of user is continuously improved in addition, to the zero of chemical pump
The performance requirement of component is higher and higher, and rubber seal has indispensable effect in the normal work of the Ministry of Chemical Industry.
Nitrile rubber has good tear resistance, lower compressive deformation, excellent wear-resisting property and oil resistivity
Can, it is widely used in multiple fields as most general oil resistant rubber sealing material.However existing nitrile rubber sealing element is resistance to
Heat aging performance is general, leads to the effect after a period of work due to heat ageing, so that its service life significantly reduces.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of chemical pump nitrile rubber sealing element is provided.
The present invention is achieved by the following technical solutions:
A kind of chemical pump nitrile rubber sealing element, is made of following component: nitrile rubber 101-105, modification by weight
Graft copolymer 10-12, nano zine oxide 5-7, attapulgite 5.2-6.8, n-butyl sebacate 4-5, diaryl are to benzene two
Amine 1-3, graphene 2.4-3.6, sulphur 0.6-1.0, γ mercaptopropyitrimethoxy silane 2.2-3.3, anti-aging agent 1.2-2.2.
Further, acrylonitrile content is 36-41% in the nitrile rubber.
Further, the modified graft copolymer preparation method the following steps are included:
110 parts of deionized water, 12 parts of four sodium of pyrophosphoric acid acid anhydride, 5 parts of glucose, hydroxypropyl first are added by weight into reaction kettle
10 parts of base cellulose, 6 parts of ferrous sulfate solution, are heated to 60 DEG C, stir 40min with 120r/min revolving speed, then adjust again anti-
System pH to 8 is answered, then adds 5 parts of emulsifier, continues to stir 35min, 40 parts of polybutadiene latex of addition is then added again, to anti-
It answers and is passed through inert gas in kettle, the air in reaction kettle is discharged, then water-bath keeps the temperature 1 hour at 72 DEG C again, while with 150r/
Min is stirred, and is adopted and is added into reaction kettle by starch, 2-Hydroxy ethyl acrylate, cumyl hydroperoxide, tertiary dodecane
52 parts of mixture of base mercaptan and diisocyanate, ethanol solution composition, are then heated to 78 DEG C, with the stirring of 500r/min revolving speed
2 hours, after cooled to room temperature, then through flocculation, dehydration, drying, obtain modified graft copolymer.
Further, the ferrous sulfate solution concentration is 1.28mol/L.
Further, the emulsifier is rosin acid potash soap.
Further, the polybutadiene latex solid content 61.8%, 305 nm of partial size.
Further, the inert gas is nitrogen or neon.
Further, the mixture is made of following component by weight:
Starch 18,2-Hydroxy ethyl acrylate 3, cumyl hydroperoxide 0.25, tertiary dodecyl sulphur 6, diisocyanate 3, second
Alcoholic solution 35；The ethanol solution mass fraction is 55%.
Further, the anti-aging agent is anti-aging agent rd.
The utility model has the advantages that chemical pump prepared by the present invention nitrile rubber sealing element has relatively low infiltration coefficient and more
High chemical stability can prevent the diffusion of vapor, oxygen and sulfur dioxide etc., and abrasion resistance properties are good, system of the present invention
Standby chemical pump has good heat aging property with nitrile rubber sealing element, and the present invention passes through in chemical pump nitrile rubber
A certain amount of modified graft copolymer is added in sealing element, it can be uniform in nitrile rubber system by modified graft copolymer
Dispersion, by using graphene as tie point, modified graft copolymer molecule and nitrile rubber molecule are by the connection of graphene, greatly
It is mutually wound between strand, atom can be closely arranged in around graphene carbon atom, form more stable change
Key is learned, so that good shielding action is generated to carbon-carbon bond (C-C), to ensure that carbon-carbon bond has very high thermal stability
And chemical inertness, and then the heat aging property of chemical pump seal made of effectively raising, when do not add graphene or
When not adding 2-Hydroxy ethyl acrylate and diisocyanate in person's modified graft copolymer preparation process, sealing element is ageing-resistant
Performance is substantially reduced, this is because lacking the graphene for containing carbon-carbon bond when not adding graphene as bridge point, leading to fourth
Obvious decrease is acted between nitrile rubber and modified graft copolymer, heat aging property reduces, without adding acrylic acid -2- hydroxyl
The graft copolymer structure stability prepared when ethyl ester and diisocyanate reduces.
Specific embodiment
Embodiment 1
A kind of chemical pump nitrile rubber sealing element, is made of following component by weight: nitrile rubber 101, modified grafting
Copolymer 10, nano zine oxide 5, attapulgite 5.2, n-butyl sebacate 4, diaryl-p-phenylenediamine 1, graphene 2.4, sulphur
Sulphur 0.6, γ mercaptopropyitrimethoxy silane 2.2, anti-aging agent 1.2.
Further, acrylonitrile content is 36% in the nitrile rubber.
Further, the modified graft copolymer preparation method the following steps are included:
110 parts of deionized water, 12 parts of four sodium of pyrophosphoric acid acid anhydride, 5 parts of glucose, hydroxypropyl first are added by weight into reaction kettle
10 parts of base cellulose, 6 parts of ferrous sulfate solution, are heated to 60 DEG C, stir 40min with 120r/min revolving speed, then adjust again anti-
System pH to 8 is answered, then adds 5 parts of emulsifier, continues to stir 35min, 40 parts of polybutadiene latex of addition is then added again, to anti-
It answers and is passed through inert gas in kettle, the air in reaction kettle is discharged, then water-bath keeps the temperature 1 hour at 72 DEG C again, while with 150r/
Min is stirred, and is adopted and is added into reaction kettle by starch, 2-Hydroxy ethyl acrylate, cumyl hydroperoxide, tertiary dodecane
52 parts of mixture of base mercaptan and diisocyanate, ethanol solution composition, are then heated to 78 DEG C, with the stirring of 500r/min revolving speed
2 hours, after cooled to room temperature, then through flocculation, dehydration, drying, obtain modified graft copolymer.
Further, the ferrous sulfate solution concentration is 1.28mol/L.
Further, the emulsifier is rosin acid potash soap.
Further, the polybutadiene latex solid content 61.8%, 305 nm of partial size.
Further, the inert gas is nitrogen or neon.
Further, the mixture is made of following component by weight:
Starch 18,2-Hydroxy ethyl acrylate 3, cumyl hydroperoxide 0.25, tertiary dodecyl sulphur 6, diisocyanate 3, second
Alcoholic solution 35；The ethanol solution mass fraction is 55%.
Further, the anti-aging agent is anti-aging agent rd.
Embodiment 2
A kind of chemical pump nitrile rubber sealing element, is made of following component by weight: nitrile rubber 105, modified grafting
Copolymer 12, nano zine oxide 7, attapulgite 6.8, n-butyl sebacate 5, diaryl-p-phenylenediamine 3, graphene 3.6, sulphur
Sulphur 1.0, γ mercaptopropyitrimethoxy silane 3.3, anti-aging agent 2.2.
Further, acrylonitrile content is 41% in the nitrile rubber.
Further, the modified graft copolymer preparation method the following steps are included:
110 parts of deionized water, 12 parts of four sodium of pyrophosphoric acid acid anhydride, 5 parts of glucose, hydroxypropyl first are added by weight into reaction kettle
10 parts of base cellulose, 6 parts of ferrous sulfate solution, are heated to 60 DEG C, stir 40min with 120r/min revolving speed, then adjust again anti-
System pH to 8 is answered, then adds 5 parts of emulsifier, continues to stir 35min, 40 parts of polybutadiene latex of addition is then added again, to anti-
It answers and is passed through inert gas in kettle, the air in reaction kettle is discharged, then water-bath keeps the temperature 1 hour at 72 DEG C again, while with 150r/
Min is stirred, and is adopted and is added into reaction kettle by starch, 2-Hydroxy ethyl acrylate, cumyl hydroperoxide, tertiary dodecane
52 parts of mixture of base mercaptan and diisocyanate, ethanol solution composition, are then heated to 78 DEG C, with the stirring of 500r/min revolving speed
2 hours, after cooled to room temperature, then through flocculation, dehydration, drying, obtain modified graft copolymer.
Further, the ferrous sulfate solution concentration is 1.28mol/L.
Further, the emulsifier is rosin acid potash soap.
Further, the polybutadiene latex solid content 61.8%, 305 nm of partial size.
Further, the inert gas is nitrogen or neon.
Further, the mixture is made of following component by weight:
Starch 18,2-Hydroxy ethyl acrylate 3, cumyl hydroperoxide 0.25, tertiary dodecyl sulphur 6, diisocyanate 3, second
Alcoholic solution 35；The ethanol solution mass fraction is 55%.
Further, the anti-aging agent is anti-aging agent rd.
Embodiment 3
A kind of chemical pump nitrile rubber sealing element, is made of following component by weight: nitrile rubber 103, modified grafting
Copolymer 11, nano zine oxide 6, attapulgite 5.9, n-butyl sebacate 4.5, diaryl-p-phenylenediamine 2, graphene 2.8,
Sulphur 0.7, γ mercaptopropyitrimethoxy silane 2.7, anti-aging agent 1.5.
Further, acrylonitrile content is 38% in the nitrile rubber.
Further, the modified graft copolymer preparation method the following steps are included:
110 parts of deionized water, 12 parts of four sodium of pyrophosphoric acid acid anhydride, 5 parts of glucose, hydroxypropyl first are added by weight into reaction kettle
10 parts of base cellulose, 6 parts of ferrous sulfate solution, are heated to 60 DEG C, stir 40min with 120r/min revolving speed, then adjust again anti-
System pH to 8 is answered, then adds 5 parts of emulsifier, continues to stir 35min, 40 parts of polybutadiene latex of addition is then added again, to anti-
It answers and is passed through inert gas in kettle, the air in reaction kettle is discharged, then water-bath keeps the temperature 1 hour at 72 DEG C again, while with 150r/
Min is stirred, and is adopted and is added into reaction kettle by starch, 2-Hydroxy ethyl acrylate, cumyl hydroperoxide, tertiary dodecane
52 parts of mixture of base mercaptan and diisocyanate, ethanol solution composition, are then heated to 78 DEG C, with the stirring of 500r/min revolving speed
2 hours, after cooled to room temperature, then through flocculation, dehydration, drying, obtain modified graft copolymer.
Further, the ferrous sulfate solution concentration is 1.28mol/L.
Further, the emulsifier is rosin acid potash soap.
Further, the polybutadiene latex solid content 61.8%, 305 nm of partial size.
Further, the inert gas is nitrogen or neon.
Further, the mixture is made of following component by weight:
Starch 18,2-Hydroxy ethyl acrylate 3, cumyl hydroperoxide 0.25, tertiary dodecyl sulphur 6, diisocyanate 3, second
Alcoholic solution 35；The ethanol solution mass fraction is 55%.
Further, the anti-aging agent is anti-aging agent rd.
Comparative example 1: it is only that with the difference of embodiment 1 and does not add modified graft copolymer.
Comparative example 2: acrylic acid -2- hydroxyl second is not added when being only that modified graft copolymer preparation with the difference of embodiment 1
Ester and diisocyanate.
Comparative example 3: it is only that with the difference of embodiment 1 and does not add graphene.
The chemical pump sealing element of same size is processed into embodiment and comparative example using same process, then progressive
Comparison can be detected:
Nitrile rubber, modified graft copolymer, nano zine oxide, graphene, attapulgite are kneaded on mixer first
3min is added n-butyl sebacate and is kneaded 4min, and diaryl-p-phenylenediamine is added and is kneaded 3min, γ-mercaptopropyi three is added
Methoxy silane, anti-aging agent are kneaded 3min, and as 62 DEG C of preliminary roller, radiate 5min on the opening rubber mixing machine that back roller is 58 DEG C, so
Sulphur mixing 3.5min is added afterwards to form；
Hot air aging is tested by GB/T3512-2001, and test condition is 280 DEG C, 72 h；
The resistant to liquid experiment of vulcanized rubber is tested by GB/T1690-92；
Table 1
As can be seen from Table 1, chemical pump prepared by the present invention has good heat aging property with nitrile rubber sealing element, this
Invention is by, with a certain amount of modified graft copolymer is added in nitrile rubber sealing element, passing through modified graft copolymerization in chemical pump
Object can be evenly dispersed in nitrile rubber system, by using graphene as tie point, modified graft copolymer molecule and butyronitrile
Rubber molecule is mutually wound, atom can be closely arranged in graphene carbon between macromolecular chain by the connection of graphene
Around atom, more stable chemical bond is formed, so that good shielding action is generated to carbon-carbon bond (C-C), to guarantee
Carbon-carbon bond has very high thermal stability and chemical inertness, and then chemical pump seal made of effectively raising is heat-resisting
Ageing properties, when do not add do not added in graphene or modified graft copolymer preparation process 2-Hydroxy ethyl acrylate and
When diisocyanate, sealing element ageing-resistant performance is substantially reduced, this is because lacking when not adding graphene containing carbon-carbon bond
Graphene as bridge point, cause to act between nitrile rubber and modified graft copolymer it is obvious weaken, heat aging property
It reduces, the graft copolymer structure stability prepared when without adding 2-Hydroxy ethyl acrylate and diisocyanate reduces.
Claims (9)
1. a kind of chemical pump nitrile rubber sealing element, which is characterized in that be made by weight of following component: nitrile rubber
101-105, modified graft copolymer 10-12, nano zine oxide 5-7, attapulgite 5.2-6.8, n-butyl sebacate 4-5,
Diaryl-p-phenylenediamine 1-3, graphene 2.4-3.6, sulphur 0.6-1.0, γ mercaptopropyitrimethoxy silane 2.2-3.3, prevent
Old agent 1.2-2.2.
2. a kind of chemical pump nitrile rubber sealing element as described in claim 1, which is characterized in that third in the nitrile rubber
Alkene nitrile content is 36-41%.
3. a kind of chemical pump nitrile rubber sealing element as described in claim 1, which is characterized in that the modified graft copolymerization
Object preparation method the following steps are included:
110 parts of deionized water, 12 parts of four sodium of pyrophosphoric acid acid anhydride, 5 parts of glucose, hydroxypropyl first are added by weight into reaction kettle
10 parts of base cellulose, 6 parts of ferrous sulfate solution, are heated to 60 DEG C, stir 40min with 120r/min revolving speed, then adjust again anti-
System pH to 8 is answered, then adds 5 parts of emulsifier, continues to stir 35min, 40 parts of polybutadiene latex of addition is then added again, to anti-
It answers and is passed through inert gas in kettle, the air in reaction kettle is discharged, then water-bath keeps the temperature 1 hour at 72 DEG C again, while with 150r/
Min is stirred, and is adopted and is added into reaction kettle by starch, 2-Hydroxy ethyl acrylate, cumyl hydroperoxide, tertiary dodecane
52 parts of mixture of base mercaptan and diisocyanate, ethanol solution composition, are then heated to 78 DEG C, with the stirring of 500r/min revolving speed
2 hours, after cooled to room temperature, then through flocculation, dehydration, drying, obtain modified graft copolymer.
4. a kind of chemical pump nitrile rubber sealing element as claimed in claim 3, which is characterized in that the ferrous sulfate solution
Concentration is 1.28mol/L.
5. a kind of chemical pump nitrile rubber sealing element as claimed in claim 3, which is characterized in that the emulsifier is rosin
Sour potash soap.
6. a kind of chemical pump nitrile rubber sealing element as claimed in claim 3, which is characterized in that the polybutadiene latex
Solid content 61.8%, 305 nm of partial size.
7. a kind of chemical pump nitrile rubber sealing element as claimed in claim 3, which is characterized in that the inert gas is nitrogen
Gas or neon.
8. a kind of chemical pump nitrile rubber sealing element as claimed in claim 3, which is characterized in that the mixture is by weight
Part meter is made of following component:
Starch 18,2-Hydroxy ethyl acrylate 3, cumyl hydroperoxide 0.25, tertiary dodecyl sulphur 6, diisocyanate 3, second
Alcoholic solution 35；The ethanol solution mass fraction is 55%.
9. a kind of chemical pump nitrile rubber sealing element as described in claim 1, which is characterized in that the anti-aging agent is anti-old
Agent rd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023317.XA CN109679168A (en) | 2019-01-10 | 2019-01-10 | A kind of chemical pump nitrile rubber sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023317.XA CN109679168A (en) | 2019-01-10 | 2019-01-10 | A kind of chemical pump nitrile rubber sealing element |
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| Publication Number | Publication Date |
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| CN109679168A true CN109679168A (en) | 2019-04-26 |
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| CN201910023317.XA Pending CN109679168A (en) | 2019-01-10 | 2019-01-10 | A kind of chemical pump nitrile rubber sealing element |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05112673A (en) * | 1991-10-18 | 1993-05-07 | Nok Corp | Nbr composition |
| CN1648164A (en) * | 2004-12-28 | 2005-08-03 | 中国科学院长春应用化学研究所 | High toughness polyburylene terephthalate blend material and its preparing method |
| CN102199253A (en) * | 2010-03-26 | 2011-09-28 | 中国石油天然气股份有限公司 | Method for preparing acrylonitrile butadiene-styrene (ABS) resin through double peak emulsion grafting |
| CN108688266A (en) * | 2018-04-16 | 2018-10-23 | 东台市岳东橡胶密封件厂 | A kind of hollow out attaching type caulking gum material and preparation method thereof |
| CN108713038A (en) * | 2016-02-10 | 2018-10-26 | 卡博特公司 | Elastomer blend |
-
2019
- 2019-01-10 CN CN201910023317.XA patent/CN109679168A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05112673A (en) * | 1991-10-18 | 1993-05-07 | Nok Corp | Nbr composition |
| CN1648164A (en) * | 2004-12-28 | 2005-08-03 | 中国科学院长春应用化学研究所 | High toughness polyburylene terephthalate blend material and its preparing method |
| CN102199253A (en) * | 2010-03-26 | 2011-09-28 | 中国石油天然气股份有限公司 | Method for preparing acrylonitrile butadiene-styrene (ABS) resin through double peak emulsion grafting |
| CN108713038A (en) * | 2016-02-10 | 2018-10-26 | 卡博特公司 | Elastomer blend |
| CN108688266A (en) * | 2018-04-16 | 2018-10-23 | 东台市岳东橡胶密封件厂 | A kind of hollow out attaching type caulking gum material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 周炳炎: "《固体废物鉴别原料与方法》", 31 October 2016, 中国环境出版社 * |
| 贾瑛: "《轻质碳材料的应用》", 30 November 2013, 国防工业出版社 * |
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Application publication date: 20190426 |