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Preparation method and application of polystyrene plastic pellet

A technology of polystyrene plastic and polystyrene, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of difficult preparation and small particle size of plastic balls, and achieve good circularity of products, The effect of uniform particle size

Active Publication Date: 2013-11-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the prepared plastic pellets have a small particle size, and it is not easy to prepare products larger than 2 μm

Method used

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  • Preparation method and application of polystyrene plastic pellet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Wash the computer packaging with polystyrene foam and dry it for later use;

[0036] (1) Prepare the oil phase: weigh 0.63g of the above-mentioned clean polystyrene foam, add 31.5g of styrene monomer, 0.0063g of dibenzoyl peroxide, and 800.65g of Span, and mix evenly to obtain the oil phase; Styrene is 2% of the weight of styrene, the initiator is 0.02% of the weight of styrene monomer, the weight of crosslinking agent is 0% of the weight of styrene monomer, and the weight of Span 80 is the weight of polystyrene and styrene monomer 2% of the sum;

[0037] (2) Configure the dispersed water phase: add 0.48g of gelatin, 0.35g of sodium dodecylbenzenesulfonate and 0.05g of sorbitan oleate into 400ml of distilled water, stir well to obtain the water phase; the oil-water ratio is 1 : 12.2, dispersant weight is 0.12% of water weight, emulsifier weight is 0.1% of water weight;

[0038] (3) Pour the water phase into a three-necked flask with a condensation recovery tube, and p...

Embodiment 2

[0041] Wash the computer packaging with polystyrene foam and dry it for later use;

[0042](1) Prepare the oil phase: weigh 7.38g of the above-mentioned clean polystyrene foam, add 24.6g of styrene monomer and 0.738g of dibenzoyl peroxide, add 0.615g of ethylene glycol dimethacrylate, Siban 603.198g, mixed evenly to obtain an oil phase; wherein the weight of polystyrene is 30% of the weight of styrene monomer, the initiator is 3.0% of the weight of styrene monomer; the weight of cross-linking agent is 2.5% of the weight of styrene monomer %, emulsifier weight is 10% of the sum of polystyrene weight and styrene monomer weight;

[0043] (2) Configure the dispersed water phase: add 8g of polyvinyl alcohol to 100ml of distilled water and stir evenly; the oil-water ratio is 1:3.0, the weight of the dispersant is 8% of the weight of the water, and the weight of the emulsifier is 0% of the weight of the water;

[0044] (3) Pour the water phase into a three-necked flask with a conden...

Embodiment 3

[0047] Wash the computer packaging with polystyrene foam and dry it for later use;

[0048] (1) Prepare the oil phase: weigh 4g of the above-mentioned clean polystyrene foam, add 100g of styrene monomer and 0.5g of dibenzoyl peroxide, add 3g of ethylene glycol dimethacrylate, and 605.2g of Span , after mixing evenly, the oil phase is obtained; wherein the weight of polystyrene is 4% of the weight of styrene monomer, and the initiator is 0.5% of the weight of styrene monomer; the weight of cross-linking agent is 3% of the weight of styrene monomer, emulsified The agent weight is 5% of the sum of polystyrene weight and styrene monomer weight;

[0049] (2) Configure the dispersed water phase: add 6.6g of polyvinyl alcohol to 220ml of distilled water, then add 2.2g of sodium lauryl sulfate, stir well as the water phase; the oil-water ratio is 1:2.0, and the weight of the dispersant is the weight of water 3% of the weight of the emulsifier is 1.0% of the weight of the water;

[0...

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Abstract

The invention relates to a preparation method and application of polystyrene plastic pellets. A self-dissolving method is employed to dissolve polystyrene in styrene monomers; then the mixture is added into an aqueous solution containing a dispersant and an emulsifier; and styrene monomer polymerization is initiated by controlling a certain temperature under dynamic dispersion conditions, so as to obtain the polystyrene plastic pellets. The prepared polystyrene plastic pellets can be added to a drilling fluid to reduce an adhesion coefficient of the drilling fluid.

Description

technical field [0001] The invention relates to a preparation method and application of polystyrene plastic pellets. More specifically, the present invention relates to a preparation method of a solid lubricant plastic pellet for drilling fluid and its application as a solid lubricant. Background technique [0002] With the development of oil exploration, the drilling depth continues to increase, and the number of cluster wells, high-inclination directional wells and horizontal wells is also increasing rapidly. Avoiding pipe sticking, reducing drill torque, and reducing drill string wear have become urgent solutions Problem, adding lubricant to the drilling fluid can effectively avoid accidents such as pipe sticking. Compared with liquid lubricants, solid lubricants are added to the drilling fluid in the form of solids to lubricate the well wall and prevent sticking and sticking. It has the advantages of convenient transportation, no fluorescence, and good lubrication perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/16C08L25/06C08F112/08C09K8/035
Inventor 赵素丽陈铖李胜李涛石秉忠常连玉
Owner CHINA PETROLEUM & CHEM CORP
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