CN112795063A - N-pentane-resistant environment-friendly rubber composition and preparation method thereof - Google Patents
N-pentane-resistant environment-friendly rubber composition and preparation method thereof Download PDFInfo
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- CN112795063A CN112795063A CN202110098766.8A CN202110098766A CN112795063A CN 112795063 A CN112795063 A CN 112795063A CN 202110098766 A CN202110098766 A CN 202110098766A CN 112795063 A CN112795063 A CN 112795063A
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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
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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
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Abstract
The invention discloses an n-pentane-resistant environment-friendly rubber composition and a preparation method thereof, which relate to the technical field of rubber and are prepared from the following raw materials in parts by weight: 80-120 parts of nitrile rubber, 60-70 parts of reinforcing agent, 20-25 parts of softener, 7-12 parts of compounding agent and 3-4 parts of vulcanization accelerator; the novel rubber is prepared by taking the nitrile rubber as a main material and 4 functional additives as auxiliary materials, has good processing formability, can be processed into rubber products with different shapes, does not contain free sulfur, has strong safety and environmental protection, can be recycled, is beneficial to saving resources, has good n-pentane resistance, and is particularly suitable for being used as a processing material of a sealing element of a gas stove.
Description
Technical Field
The invention relates to the technical field of rubber, in particular to an n-pentane-resistant environment-friendly rubber composition and a preparation method thereof.
Background
The main component of natural gas is methane, which is non-toxic, high in heat value and stable in combustion, and is the best gas source for city gas. Only carbon dioxide and water are generated after combustion, and the influence on the atmospheric greenhouse effect can be reduced. In recent years, along with the gradual improvement of the urbanization level of China, a large number of rural population is poured into cities, so that the consumption of natural gas is gradually increased year by year.
The sealing element made of rubber is needed in the gas stove, the sealing element can be contacted with n-pentane in natural gas, so that the rubber used for manufacturing the sealing element needs to have the performance of resisting the n-pentane, common vulcanizing agents used for rubber processing are used as functional auxiliaries, the most commonly used vulcanizing agents are elemental sulfur and sulfur-containing compounds, the rubber processed by the vulcanizing agents contains bound sulfur and free sulfur, and the existence of the free sulfur can seriously influence the use environmental protection of the rubber. In view of the above, we propose an n-pentane resistant environment-friendly rubber composition and a preparation method thereof.
Disclosure of Invention
The invention provides an n-pentane-resistant environment-friendly rubber composition and a preparation method thereof, aiming at the defects in the background art.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the n-pentane-resistant environment-friendly rubber composition is prepared from the following raw materials in parts by weight: 80-120 parts of nitrile rubber, 60-70 parts of reinforcing agent, 20-25 parts of softening agent, 7-12 parts of compounding agent and 3-4 parts of vulcanization accelerator.
Further, the reinforcing agent is carbon black N774.
Further, the softener is DPHP.
Further, the compounding ingredient is a mixture of zinc oxide ZNO, stearic acid ester SA, an anti-aging agent RD and an anti-aging agent 4010 in a weight ratio of 4-6:0.5-1.5:1-3: 1-2.
Further, the vulcanization accelerator is a mixture of a vulcanizing agent S-80H, an accelerator CZ and an accelerator TT according to the weight portion ratio of 0.5-1:1-1.5: 1-1.5.
Further, the preparation method of the n-pentane resistant environment-friendly rubber composition comprises the following steps:
s1, preparing materials: selecting a precise electronic balance, sequentially weighing raw materials of nitrile butadiene rubber, carbon black N774, a softener DPHP, zinc oxide ZNO, stearic acid ester SA, an anti-aging agent RD, an anti-aging agent 4010, a vulcanizing agent S-80H, an accelerator CZ and an accelerator TT, and placing the weighed raw materials into a container for later use;
s2, mixing: firstly, introducing water into an internal mixer for preheating, selecting a proper amount of nitrile rubber in proportion, adding the nitrile rubber into the internal mixer, starting the internal mixer, mixing for 50-70 seconds, then adding zinc oxide ZNO, stearic acid ester SA, antioxidant RD and antioxidant 4010, mixing for 20-40 seconds, then adding carbon black N774 and softener DPHP, mixing, discharging rubber through a rubber discharge port of the internal mixer after the temperature of the internal mixer reaches 120-140 ℃, and standing for 24 hours after the discharged rubber is subjected to sheet opening of an open mill to obtain a section of rubber;
s3, two-stage mixing: and putting the rubber in the first section after standing for 24 hours into an internal mixer, adding a vulcanizing agent S-80H, an accelerator CZ and an accelerator TT, carrying out internal mixing for 160-plus 200 seconds, carrying out rubber discharge through a rubber discharge port of the internal mixer, and then carrying out thin pass rubber turnover for 110-plus 130 seconds on the discharged rubber by using an open mill, discharging, cooling and packaging to obtain the n-pentane-resistant environment-friendly rubber composition.
The invention has the following beneficial effects:
the novel rubber is prepared by taking the nitrile rubber as a main material and 4 functional additives as auxiliary materials, has good processing formability, can be processed into rubber products with different shapes, does not contain free sulfur, has strong safety and environmental protection, can be recycled, is beneficial to saving resources, has good n-pentane resistance, and is particularly suitable for being used as a processing material of a sealing element of a gas stove.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The nitrile rubber NBR4155 in the following examples was from Nadi Zhenjiang, NBR3350 from Nanjing Yinssa, carbon black N774 from Longxing chemical company Ltd, softener DPHP from Acer. Anhui, Zinc oxide ZNO from New Metal Co Ltd, stearate SA from Hangzhou grease chemical company Ltd, antioxidant RD and antioxidant 4010 from China petrochemical company, vulcanizing agent S-80H from Sichuan Antai rubber, accelerator CZ and accelerator TT from Yanggu Huatai.
Example 1
An n-pentane-resistant environment-friendly rubber composition is prepared from the following raw materials in parts by weight: 70 parts of nitrile rubber NBR4155, 30 parts of nitrile rubber NBR3350, 67 parts of carbon black N774, 22 parts of softener DPHP, 5 parts of zinc oxide ZNO, 1 part of stearic acid ester SA, 2 parts of antioxidant RD, 1.5 parts of antioxidant 4010, 0.8 part of vulcanizing agent S-80H, 1.3 parts of accelerator CZ and 1.3 parts of accelerator TT.
The preparation method of the n-pentane resistant environment-friendly rubber composition comprises the following steps:
s1, preparing materials: selecting a precise electronic balance, sequentially weighing raw materials of 70 parts of nitrile rubber NBR4155, 30 parts of nitrile rubber NBR3350, 67 parts of carbon black N774, 22 parts of softener DPHP, 5 parts of zinc oxide ZNO, 1 part of stearate SA, 2 parts of antioxidant RD, 1.5 parts of antioxidant 4010, 0.8 part of vulcanizing agent S-80H, 1.3 parts of accelerator CZ and 1.3 parts of accelerator TT, and placing the weighed raw materials in a container for later use;
s2, mixing: firstly, introducing water into an internal mixer for preheating, adding 70 parts of nitrile rubber NBR4155 and 30 parts of nitrile rubber NBR3350 into the internal mixer, then starting the internal mixer, mixing for 60 seconds, then adding 5 parts of zinc oxide ZNO, 1 part of stearic acid ester SA, 2 parts of antioxidant RD and 1.5 parts of antioxidant 4010, mixing for 30 seconds, then adding 67 parts of carbon black N774 and 22 parts of softener DPHP, mixing after the temperature of the internal mixer reaches 130 ℃, discharging rubber through a rubber discharge port of the internal mixer, and then placing the discharged rubber for 24 hours after the rubber is opened by an open mill to obtain a section of rubber;
s3, two-stage mixing: and putting the rubber in the first section after standing for 24 hours into an internal mixer, adding 0.8 part of vulcanizing agent S-80H, 1.3 parts of accelerator CZ and 1.3 parts of accelerator TT, carrying out internal mixing for 180 seconds, carrying out rubber discharge through a rubber discharge port of the internal mixer, then carrying out sheet discharge on the discharged rubber by using an open mill to thin pass through rubber turning for 120 seconds, cooling and packaging to obtain the n-pentane-resistant environment-friendly rubber composition.
Example 2
An n-pentane-resistant environment-friendly rubber composition is prepared from the following raw materials in parts by weight: 70 parts of nitrile rubber NBR4155, 30 parts of nitrile rubber NBR3350, 60 parts of carbon black N774, 20 parts of softener DPHP, 4 parts of zinc oxide ZNO, 0.5 part of stearic acid ester SA, 1 part of antioxidant RD, 1 part of antioxidant 4010, 0.5 part of vulcanizing agent S-80H, 1 part of accelerator CZ and 1 part of accelerator TT.
The preparation method of the n-pentane resistant environment-friendly rubber composition comprises the following steps:
s1, preparing materials: selecting a precise electronic balance, sequentially weighing 70 parts of nitrile rubber NBR4155, 30 parts of nitrile rubber NBR3350, 60 parts of carbon black N774, 20 parts of softener DPHP, 4 parts of zinc oxide ZNO, 0.5 part of stearate SA, 1 part of antioxidant RD, 1 part of antioxidant 4010, 0.5 part of vulcanizing agent S-80H, 1 part of accelerator CZ and 1 part of accelerator TT, and putting the weighed raw materials into a container for later use;
s2, mixing: firstly, introducing water into an internal mixer for preheating, adding 70 parts of nitrile rubber NBR4155 and 30 parts of nitrile rubber NBR3350 into the internal mixer, then starting the internal mixer, mixing for 50 seconds, then adding 4 parts of zinc oxide ZNO, 0.5 part of stearic acid ester SA, 1 part of antioxidant RD and 1 part of antioxidant 4010, mixing for 20 seconds, then adding 60 parts of carbon black N774 and 20 parts of softener DPHP, mixing after the temperature of the internal mixer reaches 130 ℃, discharging rubber through a rubber discharge port of the internal mixer, and then placing the discharged rubber for 24 hours after the rubber is split by an open mill to obtain a section of rubber;
s3, two-stage mixing: and putting the rubber in the first section after standing for 24 hours into an internal mixer, adding 0.5 part of vulcanizing agent S-80H, 1 part of accelerator CZ and 1 part of accelerator TT, carrying out internal mixing for 160 seconds, carrying out rubber discharge through a rubber discharge port of the internal mixer, then carrying out thin rubber turning on the discharged rubber by using an open mill for 110 seconds, discharging, cooling and packaging to obtain the n-pentane-resistant environment-friendly rubber composition.
Example 3
An n-pentane-resistant environment-friendly rubber composition is prepared from the following raw materials in parts by weight: 70 parts of nitrile rubber NBR4155, 30 parts of nitrile rubber NBR3350, 70 parts of carbon black N774, 25 parts of softener DPHP, 6 parts of zinc oxide ZNO, 1.5 parts of stearic acid ester SA, 3 parts of antioxidant RD, 2 parts of antioxidant 4010, 1 part of vulcanizing agent S-80H, 1.5 parts of accelerator CZ and 1.5 parts of accelerator TT.
The preparation method of the n-pentane resistant environment-friendly rubber composition comprises the following steps:
s1, preparing materials: selecting a precise electronic balance, sequentially weighing 70 parts of nitrile rubber NBR4155, 30 parts of nitrile rubber NBR3350, 70 parts of carbon black N774, 25 parts of softener DPHP, 6 parts of zinc oxide ZNO, 1.5 parts of stearate SA, 3 parts of antioxidant RD, 2 parts of antioxidant 4010, 1 part of vulcanizing agent S-80H, 1.5 parts of accelerator CZ and 1.5 parts of accelerator TT, and placing the weighed raw materials in a container for later use;
s2, mixing: firstly, introducing water into an internal mixer for preheating, adding 70 parts of nitrile rubber NBR4155 and 30 parts of nitrile rubber NBR3350 into the internal mixer, then starting the internal mixer, mixing for 60 seconds, then adding 6 parts of zinc oxide ZNO, 1.5 parts of stearic acid ester SA, 3 parts of antioxidant RD, 2 parts of antioxidant and 4010, mixing for 40 seconds, then adding 70 parts of carbon black N774 and 25 parts of softener DPHP, mixing after the temperature of the internal mixer reaches 130 ℃, discharging rubber through a rubber discharge port of the internal mixer, and standing for 24 hours after the discharged rubber is flaked through an open mill to obtain a section of rubber;
s3, two-stage mixing: and putting the rubber in the first section after standing for 24 hours into an internal mixer, adding 1 part of vulcanizing agent S-80H, 1.5 parts of accelerator CZ and 1.5 parts of accelerator TT, carrying out internal mixing for 200 seconds, discharging the rubber through a rubber discharge port of the internal mixer, and then thinly turning the discharged rubber by using an open mill for 130 seconds, discharging, cooling and packaging to obtain the n-pentane-resistant environment-friendly rubber composition.
The novel rubber is prepared by taking the nitrile rubber as a main material and 4 functional additives as auxiliary materials, has good processing formability, can be processed into rubber products with different shapes, does not contain free sulfur, has strong safety and environmental protection, can be recycled, is beneficial to saving resources, has good n-pentane resistance, and is particularly suitable for being used as a processing material of a sealing element of a gas stove.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An n-pentane-resistant environment-friendly rubber composition is characterized by comprising the following raw materials in parts by weight: 80-120 parts of nitrile rubber, 60-70 parts of reinforcing agent, 20-25 parts of softening agent, 7-12 parts of compounding agent and 3-4 parts of vulcanization accelerator.
2. The n-pentane resistant environment-friendly rubber composition as claimed in claim 1, wherein: the reinforcing agent is carbon black N774.
3. The n-pentane resistant environment-friendly rubber composition as claimed in claim 1, wherein: the softener is DPHP.
4. The n-pentane resistant environment-friendly rubber composition as claimed in claim 1, wherein: the compounding agent is a mixture of zinc oxide ZNO, stearic acid ester SA, an anti-aging agent RD and an anti-aging agent 4010 according to the weight part ratio of 4-6:0.5-1.5:1-3: 1-2.
5. The n-pentane resistant environment-friendly rubber composition as claimed in claim 1, wherein: the vulcanization accelerator is a mixture of a vulcanizing agent S-80H, an accelerator CZ and an accelerator TT according to the weight part ratio of 0.5-1:1-1.5: 1-1.5.
6. The n-pentane resistant environment-friendly rubber composition as claimed in claim 1, wherein: the preparation method comprises the following steps:
s1, preparing materials: selecting a precise electronic balance, sequentially weighing raw materials of nitrile butadiene rubber, carbon black N774, a softener DPHP, zinc oxide ZNO, stearic acid ester SA, an anti-aging agent RD, an anti-aging agent 4010, a vulcanizing agent S-80H, an accelerator CZ and an accelerator TT, and placing the weighed raw materials into a container for later use;
s2, mixing: firstly, introducing water into an internal mixer for preheating, selecting a proper amount of nitrile rubber in proportion, adding the nitrile rubber into the internal mixer, starting the internal mixer, mixing for 50-70 seconds, then adding zinc oxide ZNO, stearic acid ester SA, antioxidant RD and antioxidant 4010, mixing for 20-40 seconds, then adding carbon black N774 and softener DPHP, mixing, discharging rubber through a rubber discharge port of the internal mixer after the temperature of the internal mixer reaches 120-140 ℃, and standing for 24 hours after the discharged rubber is subjected to sheet opening of an open mill to obtain a section of rubber;
s3, two-stage mixing: and putting the rubber in the first section after standing for 24 hours into an internal mixer, adding a vulcanizing agent S-80H, an accelerator CZ and an accelerator TT, carrying out internal mixing for 160-plus 200 seconds, carrying out rubber discharge through a rubber discharge port of the internal mixer, and then carrying out thin pass rubber turnover for 110-plus 130 seconds on the discharged rubber by using an open mill, discharging, cooling and packaging to obtain the n-pentane-resistant environment-friendly rubber composition.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348164A (en) * | 2005-06-16 | 2006-12-28 | Jsr Corp | Oil and weather resistant rubber composition and molded article of the same |
| JP2007039557A (en) * | 2005-08-03 | 2007-02-15 | Nok Corp | Nbr composition |
| CN107446200A (en) * | 2017-10-12 | 2017-12-08 | 铁岭尔凡橡塑研发有限公司 | A kind of nitrile rubber sizing material of resistance to fuel oil and its processing technology |
| CN107936324A (en) * | 2017-12-12 | 2018-04-20 | 宣城市健龙橡塑密封件有限公司 | A kind of sealing elastomeric material and preparation method thereof |
| CN110157058A (en) * | 2019-06-20 | 2019-08-23 | 河北旭龙液压密封件有限公司 | A kind of low temperature resistant nitrile rubber and preparation method thereof |
-
2021
- 2021-01-25 CN CN202110098766.8A patent/CN112795063A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348164A (en) * | 2005-06-16 | 2006-12-28 | Jsr Corp | Oil and weather resistant rubber composition and molded article of the same |
| JP2007039557A (en) * | 2005-08-03 | 2007-02-15 | Nok Corp | Nbr composition |
| CN107446200A (en) * | 2017-10-12 | 2017-12-08 | 铁岭尔凡橡塑研发有限公司 | A kind of nitrile rubber sizing material of resistance to fuel oil and its processing technology |
| CN107936324A (en) * | 2017-12-12 | 2018-04-20 | 宣城市健龙橡塑密封件有限公司 | A kind of sealing elastomeric material and preparation method thereof |
| CN110157058A (en) * | 2019-06-20 | 2019-08-23 | 河北旭龙液压密封件有限公司 | A kind of low temperature resistant nitrile rubber and preparation method thereof |
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Application publication date: 20210514 |