Hydrophobic low-density high-strength polystyrene microspheres and preparation method thereof

A polystyrene microsphere, hydrophobic technology, used in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problems of inapplicability and poor hydrophobicity, and achieve strong hydrophobic performance and The effect of long-lasting stability and high binding capacity

Active Publication Date: 2022-07-19
ZHANJIANG BRANCH OF CHINA NATIONAL OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of poor hydrophobicity of polystyrene microspheres in the prior art and unsuitability in acid and alkali fluid environments, the present invention provides a long-lasting hydrophobic low-density high-strength polystyrene microspheres with stable and long-lasting hydrophobic properties. , suitable for acid and alkali fluid environment

Method used

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  • Hydrophobic low-density high-strength polystyrene microspheres and preparation method thereof
  • Hydrophobic low-density high-strength polystyrene microspheres and preparation method thereof
  • Hydrophobic low-density high-strength polystyrene microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A preparation method of durable hydrophobic low-density high-strength polystyrene microspheres, the process is as follows

[0058] Step 1, dissolving 0.4 part of polyvinyl alcohol in 400 parts of deionized water to obtain an aqueous phase with a concentration of 0.1%.

[0059] Step 2, premix 20 parts of styrene, 5 parts of divinylbenzene, 5 parts of γ-methacryloyloxypropyltrimethoxysilane and 0.1 part of dibenzoyl peroxide to obtain an oil phase.

[0060] Step 3, the oil phase is slowly added to the water phase, and the stirring speed is controlled at 40 rpm and the temperature is 40° C. until the oil phase is completely added to the water phase.

[0061] Step 4, after all the oil phase is added to the water phase, the stirring speed is controlled to 60 rpm, and the temperature is gradually raised to 65° C. and then reacted for 1 hour.

[0062] Step 5: Suction filtration and washing to obtain spherical cores.

[0063] Step 6, add 10 parts of potassium type silica sol ...

Embodiment 2

[0067] A preparation method of durable hydrophobic low-density high-strength polystyrene microspheres, the process is as follows

[0068] Step 1: Dissolve 4 parts of cellulose ether in 400 parts of deionized water to obtain an aqueous phase with a concentration of 1%.

[0069] Step 2, premix 40 parts of styrene, 6 parts of divinylbenzene, 1 part of vinyltrimethoxysilane and 1.2 parts of azobisisobutyronitrile to obtain an oil phase.

[0070] Step 3, the oil phase is slowly added to the water phase, and the stirring speed is controlled at 100 rpm and the temperature is 60° C. until the oil phase is completely added to the water phase.

[0071] Step 4, after all the oil phase is added to the water phase, the stirring speed is controlled to 130 rpm, and the temperature is gradually raised to 100° C. and then reacted for 5 hours.

[0072] Step 5: Suction filtration and washing to obtain spherical cores.

[0073] Step 6, add 10 parts of potassium-type silica sol and 0.01 part of ...

Embodiment 3

[0077] A preparation method of durable hydrophobic low-density high-strength polystyrene microspheres, the process is as follows

[0078] Step 1, dissolving 3 parts of sodium dodecylbenzenesulfonate in 200 parts of deionized water to obtain an aqueous phase with a concentration of 1.5%.

[0079] In step 2, 26 parts of styrene, 5 parts of divinylbenzene, 3 parts of vinyltriethoxysilane and 0.25 parts of dibenzoyl peroxide are premixed to obtain an oil phase.

[0080] Step 3, the oil phase is slowly added to the water phase, and the stirring speed is controlled at 100 rpm and the temperature is 45° C. until the oil phase is completely added to the water phase.

[0081] Step 4: After the oil phase is all added to the water phase, the stirring speed is controlled to be 150 rpm, and the temperature is gradually raised to 70° C. and then reacted for 2.5 hours.

[0082] Step 5: Suction filtration and washing to obtain spherical cores.

[0083] Step 6, add 5 parts of potassium-type ...

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Abstract

In order to overcome the problems of poor hydrophobicity of polystyrene microspheres in the prior art and inapplicability in acid and alkali fluid environments, the present invention discloses a durable hydrophobic low-density and high-strength polystyrene microsphere, comprising a sphere core; And the membrane layer, covering the outside of the core. The invention also discloses a preparation method of the durable hydrophobic low-density and high-strength polystyrene microspheres, including the steps of core preparation, configuration of low-temperature cured film layer raw materials, and film layer wrapping. The invention provides a durable hydrophobic low-density high-strength polystyrene microsphere, which has stable and durable hydrophobicity and is suitable for acid and alkali fluid environments. The invention also provides a preparation method of durable hydrophobic low-density high-strength polystyrene microspheres, which has high yield, does not use organic solvent, and is simple and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of functional polymer materials, in particular to a durable hydrophobic low-density high-strength polystyrene microsphere and a preparation method. Background technique [0002] As a polymer functional material, polystyrene microspheres have very broad application prospects in the fields of biomedicine, analytical chemistry, organic synthesis, and oil extraction. For example, polystyrene microspheres are used as proppants in oil and gas extraction, or polystyrene microspheres are used as hydrophobic materials in coatings. In the application of the above-mentioned polystyrene microspheres, it is required to have good hydrophobicity, acid resistance and alkali resistance. [0003] In the prior art, hydrophobic polystyrene microspheres are usually prepared by introducing functional monomers such as methyl methacrylate and tert-butyl styrene into a free-radical copolymerization system of styrene and divinylbenz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/12C08F212/08C08F212/36C09K8/80C08L25/08
CPCC08J3/126C08F212/08C09K8/80C08J2325/08C08J2427/18C08F212/36
Inventor 龚云蕾李程浩宋立志袁辉任先艳郑华安吴绍伟廖云虎周泓宇万小进
Owner ZHANJIANG BRANCH OF CHINA NATIONAL OFFSHORE OIL CORP
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