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Oil-resistant air-encapsulated capsules and preparation method thereof

An air bag and capsule technology, which is applied in the field of oil-resistant air bag capsules and its preparation, can solve the problems of weak corrosion resistance, reduced air bag service life, low tear resistance, bending fatigue resistance and aging resistance, and the like. Increase plasticity, improve physical and mechanical properties and aging resistance, and improve the effect of tear resistance

Active Publication Date: 2016-04-20
PUYANG HENGXIN RUBBER & PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing air bag capsules have weak corrosion resistance in oil-based mud. In addition, in a high-pressure environment, their tear resistance, bending fatigue resistance and aging resistance are not outstanding, which reduces the service life of the air bag.

Method used

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  • Oil-resistant air-encapsulated capsules and preparation method thereof

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preparation example Construction

[0016] The preparation method of the oil-resistant air-encapsulated capsule comprises the following steps:

[0017] (1) Cut the nitrile rubber into blocks with a rubber cutter, place it in an open mill for 5 times of thin pass plasticizing, and then discharge the material, and place it for 8~12h;

[0018] (2) Put the plastic compounded by Botong into the internal mixer, and add zinc oxide, stearic acid, accelerator DM, accelerator CZ, dioctyl phthalate, and coumarone resin , anti-aging agent DMBPPD, anti-aging agent MB, anti-aging agent HB-5, spray carbon black and white carbon black were mixed evenly, and mixed for 10 minutes;

[0019] (3) Send the mixed rubber after mixing into the open mill to produce a piece with a thickness of 10~13mm and a size of 45cm×65cm, and then place it for more than 10h;

[0020] (4), re-send the film from the open mill in step (3) into the open mill, add sulfur and dicumyl peroxide for refining, and then release the film;

[0021] (5) Prelimina...

Embodiment 1

[0024] Oil-resistant air-encapsulated capsules, in parts by weight, are composed of: 15 parts of nitrile rubber, 0.5 parts of zinc oxide, 0.1 part of stearic acid, 0.1 part of accelerator DM, 0.1 part of accelerator CZ, and 1 part of phthalic acid Dioctyl ester, 0.5 part of coumarone resin, 0.1 part of anti-aging agent DMBPPD, 0.1 part of anti-aging agent MB, 0.1 part of anti-aging agent HB-5, 3 parts of spray carbon black, 1 part of white carbon black, 0.2 part of sulfur and 0.1 part of super Dicumyl oxide.

Embodiment 2

[0026] Oil-resistant air-encapsulated capsules, in parts by weight, are composed of: 20 parts of nitrile rubber, 1 part of zinc oxide, 0.3 parts of stearic acid, 0.3 parts of accelerator DM, 0.2 parts of accelerator CZ, and 2 parts of phthalic acid Dioctyl ester, 1 part of coumarone resin, 0.15 part of antioxidant DMBPPD, 0.15 part of antioxidant MB, 0.2 part of antioxidant HB-5, 5 parts of spray carbon black, 2 parts of white carbon black, 0.3 part of sulfur and 0.12 part of super Dicumyl oxide.

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Abstract

The invention discloses an oil-resistant air tank capsule and a preparation method thereof and relates to an air tank capsule for a slurry pump. The oil-resistant air tank capsule is prepared by plastifying, mixing, vulcanizing and shaping the following components in parts by weight: 15-25 parts of butyronitrile rubber, 0.5-1.5 parts of zinc oxide, 0.1-0.5 part of stearic acid, 0.1-0.5 part of accelerator DM, 0.1-0.3 part of accelerator CZ, 1-3 parts of dioctyl phthalate, 0.5-1.5 parts of coumarone resin, 0.1-0.2 part of anti-aging agent DMBPPD, 0.1-0.2 part of anti-aging agent MB, 0.1-0.3 part of anti-aging agent HB-5, 3-6 parts of spraying carbon black, 1-3 parts of white carbon black, 0.2-0.4 part of sulfur and 0.1-0.2 part of dicumyl peroxide. The air tank capsule disclosed by the invention has the advantages of prominent corrosion resistance in oil-based slurry as well as excellent tear resistance, flexural resistance, fatigue resistance and ageing resistance under a high-pressure environment. The service life of the air tank capsule is prolonged in multiples and the service cycle of an air tank is increased.

Description

technical field [0001] The invention relates to a preparation method of an air-encapsulated rubber product for a drilling mud pump, in particular to an oil-resistant air-encapsulated capsule and a preparation method thereof. Background technique [0002] The air bag is an important component for vibration reduction, buffering, pressure and flow stabilization in oil drilling mud pumps, and the air bag capsule is the core component of the air bag. The function of the air bag is to use its own volume to continuously store and compensate the discharge liquid of a part of the pump in the pipeline, so as to reduce the fluctuation of the pumped liquid. The air capsule is a thin-walled large rubber product. Its application environment determines that it must have good high temperature and high pressure resistance, oil resistance, aging resistance, corrosion resistance and other properties, as well as good mechanical properties. The existing air bag has weak corrosion resistance in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L45/02C08K13/02C08K3/22C08K5/09C08K5/47C08K5/12C08K3/04C08K3/36C08K5/18C08K5/3447C08K5/3415C08K3/06C08K5/14
Inventor 王晓彬
Owner PUYANG HENGXIN RUBBER & PLASTIC
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