Multifunctional ZnO whisker reinforced stator rubber for screw pump

A screw pump, multi-functional technology, applied in the field of multi-functional ZnO whisker reinforced screw pump stator rubber, can solve the problems of low rubber strength, insufficient wear resistance and chemical stability, poor plasticity, etc. The effect of improving the service life and improving the service life

Inactive Publication Date: 2010-11-24
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a multifunctional ZnO whisker reinforced screw pump stator rubber in order to overcome the defects of low rubber strength, poor plasticity, insufficient wear resistance and chemical stability.

Method used

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  • Multifunctional ZnO whisker reinforced stator rubber for screw pump

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Comparison scheme
Effect test

example 1

[0008] Example 1: Reinforced rubber formulation and preparation process

[0009] The mastication of nitrile rubber is different from that of general-purpose rubber. It requires low temperature, small roller distance, and low-capacity thin pass method, so as to effectively obtain a certain degree of plasticity. Under normal temperature conditions, masticate the nitrile rubber raw rubber on the open mill for about 10 minutes until it is covered with rolls. The temperature of the roll is 45-55°C. Note that the temperature of the front roll of the double-roller plastic mixer must be higher than the temperature of the rear roll by 10°C, and the roll distance is 1mm. Put the masticated nitrile rubber in the air for 2 to 6 hours before kneading. The mixing of nitrile rubber adopts low temperature mixing, and the roller temperature is 40-60°C. First take 65% of nitrile rubber, then add 1% of sulfur powder in turn; 3% of modified nano-zinc oxide; 7% of modified ZnO whiskers; 0.7% of ...

example 2

[0010] Example 2: Modification method of rubber reinforcement additive nanometer

[0011] The multifunctional ZnO whisker reinforced rubber formulation provided by the invention is characterized in that, in the experimental process, a silane coupling agent is used, i.e. two-[Y-(triethoxysilyl) propyl]-tetrasulfide or emulsifier OP-10 That is, the condensation product of alkylphenol and ethylene oxide, the ZnO whisker is modified by spray treatment. The contents involved in the experiment include: surface modification and anti-aggregation mechanism, selection of surfactant and combination of dispersant, etc. The main principles of the design are to reduce the surface energy state of the particles, eliminate the surface charge of the particles, and improve the affinity between the particles and the organic phase.

[0012] The modification steps of ZnO whiskers and nano ZnO are as follows:

[0013] Modification of nano-ZnO: Dry nano-ZnO at 200-210°C for 1.5 hours to make it ful...

example 3

[0015] Example 3: Enhancement effect of ZnO whiskers on NBR

[0016] Since the amount of ZnO whiskers and nano-ZnO is directly related to economic factors, it is impossible to increase the amount indefinitely for industrial production considerations. Therefore, when the additions of ZnO whiskers and nano-ZnO are selected to be 7% and 3% respectively, the above-mentioned The multifunctional ZnO whisker-reinforced rubber formula is characterized in that its comprehensive performance in indoor testing is shown in Table 1.

[0017] Table 1 Reinforcing effect of ZnO whiskers on rubber

[0018]

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Abstract

The invention relates to a multifunctional ZnO whisker reinforced stator rubber for a screw pump applied in the fields of oil well control devices, special mechanical equipment and chemistry and chemical engineering. The stator rubber can overcome the defects of low rubber strength, low plasticity and insufficient wear-resisting property and chemical stability. The invention adopts a technical scheme that: the prepared rubber comprises the following raw materials: 65 percent of nitrile-butadiene rubber, 1 percent of sulfur powder, 3 percent of modified nano zinc oxide, 7 percent of modified ZnO whisker, 0.7 percent of antioxidant 264, 20 percent of carbon black, 1 percent of dioctyl phthalate, 0.8 percent of stearic acid, 0.5 percent of accelerator-DM and 1 percent of accelerator-CZ. The rubber product is finally obtained by the technical processes of plastication, mixing and vulcanization molding of the nitrile-butadiene rubber. The rubber is a multicomponent disperse system with thermodynamic stability and isotropy, is difficult to conglomerate, can remarkably improve the strength and the plasticity of the rubber, and is applied in the industries of oilfield well control, the special mechanical equipment and the chemistry and chemical engineering.

Description

technical field [0001] The invention relates to a multifunctional ZnO whisker-reinforced screw pump stator rubber used in petroleum well control devices, special mechanical equipment, and chemical and chemical fields. technical background [0002] Special working environments such as petroleum well control devices and special mechanical equipment require rubber parts to have excellent plastic properties. With the development of the petroleum industry, new requirements are put forward for rubber materials: ① During the mining of heavy oil by screw pumps, there are often more fine silt, which requires the rubber materials used as stators to have strong wear resistance; ② At the same time The rubber material itself should not be too hard, otherwise it will affect the rotation of the rotor; ③The working conditions of the screw pump for oil production are harsh, such as high temperature, high pressure, long working time, corrosive medium, periodic extrusion, etc. Traditional rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K13/06C08K9/06C08K3/22C08K3/06C08K7/08C08K3/04C08K5/47
Inventor 王霞陈玉祥张建国刘承杰赵竹轩
Owner SOUTHWEST PETROLEUM UNIV
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