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Oil-absorptive resin and oil-absorptive expanding rubber comprising same

An oil-absorbing resin and oil-absorbing swelling technology, which is applied in the field of oil-absorbing swelling rubber, can solve the problems of low compressive strength and achieve high expansion ratio, easy operation, and excellent mechanical properties

Active Publication Date: 2014-06-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its relatively low compressive strength, it still cannot meet the requirements for the application of horizontal wells for fracturing, acidizing and other measures. Therefore, it is necessary to develop a new type of oil-absorbing swelling rubber

Method used

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  • Oil-absorptive resin and oil-absorptive expanding rubber comprising same
  • Oil-absorptive resin and oil-absorptive expanding rubber comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides an oil-absorbing resin, which comprises the following components in parts by weight:

[0048] 50 parts of butyl methacrylate, 20 parts of lauryl methacrylate, 1.5 parts of diethanol, 1 part of benzoyl peroxide (BPO), 0.01 part of 1,4-butylene glycol diacrylate, 30 parts of water .

[0049] The above-mentioned oil-absorbing resin is prepared by the following method:

[0050] Step 1, adding butyl methacrylate and lauryl methacrylate into the reaction kettle at a temperature of 25° C., stirring evenly to obtain a mixed solution;

[0051] Step 2, adding diethanol, benzoyl peroxide (BPO), and 1,4-butanediol diacrylate in batches to the mixed liquid, adding water as the dispersed phase for dispersion, and stirring to obtain a reaction liquid;

[0052] Step 3: Stir the reaction solution uniformly for 30 minutes before discharging, polymerize after 3 hours to form fluffy particles with small holes inside, and obtain the oil-absorbing resin.

[0053] Th...

Embodiment 2

[0060] This embodiment provides an oil-absorbing resin, which comprises the following components in parts by weight:

[0061] 60 parts of butyl methacrylate, 10 parts of 2-ethylhexyl acrylate, 15 parts of isobutyl methacrylate, 1.5 parts of diethanol, 1 part of benzoyl peroxide (BPO), 1,4 parts of diacrylic acid - 0.01 part of butanediol ester, 30 parts of water.

[0062] The above-mentioned oil-absorbing resin is prepared by the following method:

[0063] Step 1, adding butyl methacrylate, 2-ethylhexyl acrylate, and isobutyl methacrylate into the reaction kettle at a temperature of 25° C., stirring evenly to obtain a mixed solution;

[0064] Step 2, adding diethanol, benzoyl peroxide (BPO), and 1,4-butanediol diacrylate in batches to the mixed liquid, adding water as the dispersed phase for dispersion, and stirring to obtain a reaction liquid;

[0065] Step 3: Stir the reaction solution uniformly for 20 minutes before discharging, and after 2 hours, polymerize to form fluff...

Embodiment 3

[0073] This embodiment provides an oil-absorbing swelling rubber comprising the oil-absorbing resin of Embodiment 1. In parts by weight, the oil-absorbing swelling rubber includes the following components:

[0074] 100 parts of nitrile rubber, 80 parts of oil-absorbing resin, 60 parts of carbon black, 2 parts of stearic acid, 0.5 parts of sulfur, 10 parts of dibutyl phthalate (DBP), tetramethylthiuram disulfide (TMTD) 1 part, 0.5 parts of 2,2'-dithiodibenzothiazole (DM), 1 part of N-isopropyl-N'-phenyl-p-phenylenediamine (4010NA), 8 parts of zinc oxide.

[0075] The above-mentioned oil-absorbing swelling rubber is prepared according to the following steps:

[0076] Step 1: Mix the nitrile rubber and the oil-absorbing resin prepared in Example 1 in an internal mixer, the internal mixer is GK400 type, the internal mixing temperature is controlled at 120-130°C, the rotor speed is controlled at 50r / min, and The top bolt pressure is 0.3MPa, the glue discharge temperature is 90°C, ...

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Abstract

The invention provides oil-absorptive resin and oil-absorptive expanding rubber comprising the same. The oil-absorptive resin comprises the following components in parts by weight: 60 to 75 parts of polymer monomer, 0.5 to 2.5 parts of catalyst, 0.5 to 1 part of initiator, 0.01 to 0.03 part of cross-linking agent and 25 to 30 parts of dispersing phase. The invention also provides expanding rubber comprising the oil-absorptive resin. The oil-absorptive expanding rubber comprises the following components in parts by weight: 100 parts of rubber, 40 to 100 parts of oil-absorptive resin, 40 to 80 parts of reinforcing agent, 10 to 20 parts of softening agent, 0.5 to 2 parts of vulcanizing agent, 0.5 to 2 parts of promoter, 0.5 to 2 parts of anti-aging agent and 6 to 8 parts of active agent. By utilizing the characteristic of the oil-absorptive resin that the oleophylic group (ester group) is interactively affine to oil molecules to absorb the oil, the prepared oil-absorptive resin has porosity, so that the expanding rubber utilizing the oil-absorptive resin has better oil-absorptive effect in comparison with the traditional oil-absorptive expanding rubber, and the pressure resisting effect is also improved.

Description

technical field [0001] The invention relates to an oil-absorbing resin and an oil-absorbing swelling rubber containing the oil-absorbing resin, belonging to the field of industrial swelling rubber. Background technique [0002] In the prior art, due to the harsh environment in oil wells, ordinary oil-absorbing swellable rubber often fails to meet the operating requirements. Therefore, it is important to study multi-purpose fine, functional and structural oil-absorbing swellable rubbers that can withstand the environment and special occasions for a long time. A direction for the development of oil-absorbing swelling rubber. [0003] Oil-absorbing swellable rubber (oil swellable rubber referred to as OSR) is a new type of functional oil-absorbing rubber material, which is made by chemically introducing lipophilic functional groups or blending with lipophilic components on the traditional rubber matrix. Combination with non-polar lipophilic components. Oil-absorbing swelling ...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08L9/02C08L11/00C08L7/00C08L23/16C08L33/10C08K13/02C08K3/04C08K5/12C08K3/22C08K5/09C08K5/18B29B7/00C09K8/467C09K8/44
Inventor 周坤曹建王斌常鹏梅王昊陈健李彪姜韦韦郑亮曲玉辰马培静刘杰
Owner PETROCHINA CO LTD
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