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Butadiene-acrylonitrile rubber used in low-temperature vulcanized high-performance screw pump stator and preparation method thereof

A low-temperature vulcanization technology for nitrile rubber, which is applied in the chemical industry, climate sustainability, sustainable manufacturing/processing, etc., can solve problems such as high vulcanization temperature, easy aggregation and growth of nanoparticles, loss of nano-performance, etc., to achieve improved Oil swelling and aging resistance, broadened application range, and improved wear resistance

Inactive Publication Date: 2015-11-25
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned nano-zinc oxide reinforced screw pump stator rubber vulcanization temperature is too high, and the nanoparticles are easy to agglomerate and grow up and lose the unique properties of nano

Method used

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  • Butadiene-acrylonitrile rubber used in low-temperature vulcanized high-performance screw pump stator and preparation method thereof
  • Butadiene-acrylonitrile rubber used in low-temperature vulcanized high-performance screw pump stator and preparation method thereof
  • Butadiene-acrylonitrile rubber used in low-temperature vulcanized high-performance screw pump stator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the above-mentioned low-temperature vulcanization high-performance screw pump stator is characterized in that: the method steps are as follows:

[0029] (1) Weigh the materials according to the above ratio for later use; adjust the roll distance of the open mill to 0.5-1mm, weigh the nitrile rubber and put it into Botong plastication for 3 minutes and cover the rolls.

[0030] (2) Add the compounding ingredients to the open mill for mixing in turn; the order of feeding is: nitrile rubber→sulfur→stearic acid→nanometer zinc oxide→γ-aminopropyltriethoxysilane→4010 anti-aging agent→N330 high Wear-resistant carbon black → dioctyl phthalate (DOP) → DM+TMTD+MgO, use the triangular bag method to pack 8-10 times to make it evenly mixed.

[0031] (3) After the obtained mixed rubber is left for 24 hours, it is re-milled for 3-5 minutes, and the vulcanization temperature is changed to measure the vulcanization time; according to the vulcanization temperatu...

Embodiment 1

[0035] According to the ratio of parts by mass, it consists of the following raw materials: 100 parts of nitrile rubber, 60 parts of high wear-resistant carbon black, 5 parts of nano-zinc oxide, 2 parts of γ-aminopropyl triethoxysilane (KH550), 1 part of stearic acid 1 part, 1 part of 4010 anti-aging agent, 1.5 parts of vulcanizing agent, 2.5 parts of DM, 0.25 parts of TMTD, 0.15 parts of MgO, 2 parts of dioctyl phthalate (DOP).

[0036] The above-mentioned preparation method of nitrile rubber for high-performance screw pump stator with low-temperature vulcanization, the steps are as follows: take the material according to the above ratio for use; 3 minutes and cover the rolls; add the compounding ingredients in turn to the open mill for mixing. The feeding sequence is: nitrile rubber → sulfur → stearic acid → nano-zinc oxide → γ-aminopropyltriethoxysilane → 4010 anti-aging agent → N330 high wear-resistant carbon black → dioctyl phthalate (DOP) → DM+TMTD+MgO, use the triangul...

Embodiment 2

[0040] The above-mentioned parts by mass are the same as in Example 1, and will not be repeated here.

[0041] The mixing process in the preparation method is the same as that in Example 1, and will not be repeated here. After leaving the obtained mixed rubber for 24 hours, re-mill for 3-5 minutes, fix the vulcanization temperature at 140°C, and measure the vulcanization time tc 90 ;according to the obtained tc 90 , vulcanize the compound rubber in a flat vulcanizing machine.

[0042] Table 1 shows the mechanical property test results of the low-temperature vulcanized high-performance screw pump stator nitrile rubber obtained in this example, see Table 2 for the hardness test results, see Table 3 for the vulcanization time test results, and see Table 4 for the swelling resistance test results. The wear test is shown in Table 5.

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Abstract

The invention discloses butadiene-acrylonitrile rubber used in a low-temperature vulcanized high-performance screw pump stator and a preparation method thereof. The rubber is prepared from, by mass, 100 parts of butadiene-acrylonitrile rubber bodies, 60 parts of N330 high-abrasion-resistance carbon black, 5 parts of nano-zinc oxide, 2 parts of gamma-amine propyle triethoxysilane (KH550), 1 part of stearic acid, 1 part of 4010 anti-aging agents, 1.5 parts of sulphur, 2.5 parts of accelerant-DM, 0.25 part of accelerant-TMTD, 0.15 part of accelerant-MgO and 2 parts of phthalic acid dioctylterephthalate (DOP). The butadiene-acrylonitrile rubber bodies, the sulphur, the stearic acid, the nano-zinc oxide, the gamma-amine propyle triethoxysilane, the 4010 anti-aging agents, the N330 high-abrasion-resistance carbon black, the phthalic acid dioctylterephthalate (DOP) and a mixture of the DM, the TMTD and the MgO are added in sequence, and slab vulcanization is conducted on a rubber compound according to the set vulcanizing temperature and the measured vulcanizing time. The preparation method is simple in process, high in production efficiency and capable of saving energy and reducing consumption, and the obtained vulcanized rubber is excellent in swelling resistance and abrasion resistance.

Description

technical field [0001] The invention relates to a nitrile rubber and a preparation method thereof, in particular to a low-temperature vulcanized high-performance screw pump stator nitrile rubber and a preparation method thereof, belonging to the technical field of material modification. Background technique [0002] Nitrile rubber has good oil resistance, wear resistance and heat resistance because it contains polar CN groups, and is widely used to manufacture oil production stators for oil field screw pumps. As the oil production process gradually transitions from primary production to secondary and tertiary production, the working conditions of oil wells are more complex, often accompanied by high temperature, high pressure, strong corrosive media, high sand content, etc., resulting in premature failure of nitrile stator rubber . [0003] In order to meet the needs of complex well conditions, people often modify nitrile rubber to greatly improve the original performance o...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08K13/02C08K3/04C08K3/22C08K5/544C08K5/09C08K3/06C08K5/47C08K5/40C08K5/12B29C35/02
CPCY02P20/10
Inventor 吕晓仁王世杰唐黎明何恩球
Owner SHENYANG POLYTECHNIC UNIV
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