Hollow polystyrene plastic spheres, and preparation method and application thereof

Abstract

The invention provides a preparation method for hollow polystyrene plastic spheres, and spheres prepared by the method, and an application of the spheres, and relates to the plastic field. The preparation method for the hollow polystyrene plastic spheres comprises the steps of dissolving an oil-phase solute in an organic solvent, adding a foaming agent, mixing uniformly to obtain an oil phase, wherein the oil-phase solute is polystyrene or a mixture of polystyrene and styrene monomers; dissolving a dispersing agent or the dispersing agent and an emulsifying agent in water to obtain a water phase; mixing the oil phase and the water phase uniformly, so as to make the oil phase dispersed uniformly in the water phase to obtain an emulsion; heating to evaporate the organic solvent while curing and foaming the oil-phase droplets; then separating a solid phase from the emulsion; and drying to obtain the hollow polystyrene plastic spheres. The hollow polystyrene plastic spheres have an internal hollow-core structure, are small in particles and controllable in particle size distribution, and can be well applied in the fields of petroleum drilling fluids, cosmetics, coatings, etc. The preparation method is simple in process and short in preparation time and can be easily industrialized.

Description

technical field

[0001] The invention relates to the field of plastic processing, and more particularly, relates to a hollow polystyrene plastic ball, a preparation method and application thereof. Background technique

[0002] Hollow microsphere materials have unique chemical and physical properties due to their special hollow structure. In recent years, they have attracted more and more attention and become a research hotspot in the field of materials. So far, inorganic materials, polymer materials, metal oxide materials and semiconductor materials (gallium oxide, gallium nitride) have all been tried to be prepared into hollow microsphere materials by domestic and foreign researchers. Different special features for solid materials. These hollow microsphere materials with special characteristics are expected to be used in microreactors, drug delivery, controlled release, photocatalysis, enzyme coating, photonic crystals, etc. In addition, due to the low density, large effec...

Examples

Embodiment 1

[0054] Wash the computer packaging with polystyrene foam and dry it for later use;

[0055] (1) Prepare the oil phase: weigh 2.4g of the above-mentioned clean polystyrene foam, add it to 59.4g of dichloromethane, add 0.0024g of azobisisobutyronitrile after the polystyrene is completely dissolved, and stir evenly to obtain Oil phase; wherein the oil phase solute is 100%wt polystyrene, its weight is 4% of the organic solvent weight, and the foaming agent consumption is 0.1% of the oil phase solute weight;

[0056] (2) Configure the dispersed water phase: add 2g of gelatin and 2g of sodium lauryl sulfate to 200ml of distilled water, and stir evenly to form a water phase; the weight of the dispersant in the water phase is 1% of the water weight, and the weight of the emulsifier is 1% of water weight; oil-water ratio is 1:3.3;

[0057] (3) Pour the water phase into a three-necked flask with a condensation recovery tube, and put it into a water bath; adjust the rotation speed to 20...

Embodiment 2

[0061] Wash the computer packaging with polystyrene foam and dry it for later use;

[0062] (1) Prepare the oil phase: weigh 3.70g of the above-mentioned clean polystyrene foam and add it to 92.4g of chloroform. After the polystyrene is completely dissolved, add 0.111g of 5%wt ammonium bicarbonate aqueous solution and stir Obtain an oil phase evenly; Wherein the oil phase solute is 100%wt polystyrene, its weight is 4% of organic solvent weight; Foaming agent consumption is 3% of oil phase solute weight;

[0063] (2) Configure the dispersed water phase: Add 0.5g of gelatin and 1.2g of sodium lauryl sulfate into 400ml of distilled water, and stir evenly to form a water phase; the weight of the dispersant in the water phase is 0.125% of the water weight, and the emulsifier The weight is 0.3% of the water weight; the oil-water ratio is 1:4.2;

[0064] (3) Pour the water phase into a three-necked flask with a condensation recovery tube, and put it in a water bath; adjust the rotat...

Embodiment 3

[0067] Wash and dry the waste plastic whose main component is polystyrene;

[0068] (1) Prepare the oil phase: Weigh 10g of the above-mentioned clean waste plastic, add it to 92.4g of 1,1-dichloroethane, add 1.0g of benzoyl peroxide after the polystyrene is completely dissolved, and stir evenly to prepare Obtain oil phase; Wherein oil phase solute is 100%wt polystyrene, its weight is 10.8% of organic solvent weight, blowing agent consumption is 10% of oil phase solute weight;

[0069] (2) Configure the dispersed water phase: add 5.0g of gelatin and 0.4g of sodium dodecylbenzenesulfonate into 200ml of distilled water, and stir evenly to make a water phase; the weight of the dispersant in the water phase is 2.5% of the water weight, The emulsifier weight is 0.2% of the water weight; the oil-water ratio is 1:2;

[0070] (3) Use the SPG membrane with a pore size of 10 μm to emulsify the water phase and oil phase obtained above to prepare an oil-in-water emulsion to obtain a unifo...

technical field

[0001] The invention relates to the field of plastic processing, and more particularly, relates to a hollow polystyrene plastic ball, a preparation method and application thereof. Background technique

[0002] Hollow microsphere materials have unique chemical and physical properties due to their special hollow structure. In recent years, they have attracted more and more attention and become a research hotspot in the field of materials. So far, inorganic materials, polymer materials, metal oxide materials and semiconductor materials (gallium oxide, gallium nitride) have all been tried to be prepared into hollow microsphere materials by domestic and foreign researchers. Different special features for solid materials. These hollow microsphere materials with special characteristics are expected to be used in microreactors, drug delivery, controlled release, photocatalysis, enzyme coating, photonic crystals, etc. In addition, due to the low density, large effec...

Examples

Embodiment 1

[0054] Wash the computer packaging with polystyrene foam and dry it for later use;

[0055] (1) Prepare the oil phase: weigh 2.4g of the above-mentioned clean polystyrene foam, add it to 59.4g of dichloromethane, add 0.0024g of azobisisobutyronitrile after the polystyrene is completely dissolved, and stir evenly to obtain Oil phase; wherein the oil phase solute is 100%wt polystyrene, its weight is 4% of the organic solvent weight, and the foaming agent consumption is 0.1% of the oil phase solute weight;

[0056] (2) Configure the dispersed water phase: add 2g of gelatin and 2g of sodium lauryl sulfate to 200ml of distilled water, and stir evenly to form a water phase; the weight of the dispersant in the water phase is 1% of the water weight, and the weight of the emulsifier is 1% of water weight; oil-water ratio is 1:3.3;

[0057] (3) Pour the water phase into a three-necked flask with a condensation recovery tube, and put it into a water bath; adjust the rotation speed to 20...

Embodiment 2

[0061] Wash the computer packaging with polystyrene foam and dry it for later use;

[0062] (1) Prepare the oil phase: weigh 3.70g of the above-mentioned clean polystyrene foam and add it to 92.4g of chloroform. After the polystyrene is completely dissolved, add 0.111g of 5%wt ammonium bicarbonate aqueous solution and stir Obtain an oil phase evenly; Wherein the oil phase solute is 100%wt polystyrene, its weight is 4% of organic solvent weight; Foaming agent consumption is 3% of oil phase solute weight;

[0063] (2) Configure the dispersed water phase: Add 0.5g of gelatin and 1.2g of sodium lauryl sulfate into 400ml of distilled water, and stir evenly to form a water phase; the weight of the dispersant in the water phase is 0.125% of the water weight, and the emulsifier The weight is 0.3% of the water weight; the oil-water ratio is 1:4.2;

[0064] (3) Pour the water phase into a three-necked flask with a condensation recovery tube, and put it in a water bath; adjust the rotat...

Embodiment 3

[0067] Wash and dry the waste plastic whose main component is polystyrene;

[0068] (1) Prepare the oil phase: Weigh 10g of the above-mentioned clean waste plastic, add it to 92.4g of 1,1-dichloroethane, add 1.0g of benzoyl peroxide after the polystyrene is completely dissolved, and stir evenly to prepare Obtain oil phase; Wherein oil phase solute is 100%wt polystyrene, its weight is 10.8% of organic solvent weight, blowing agent consumption is 10% of oil phase solute weight;

[0069] (2) Configure the dispersed water phase: add 5.0g of gelatin and 0.4g of sodium dodecylbenzenesulfonate into 200ml of distilled water, and stir evenly to make a water phase; the weight of the dispersant in the water phase is 2.5% of the water weight, The emulsifier weight is 0.2% of the water weight; the oil-water ratio is 1:2;

[0070] (3) Use the SPG membrane with a pore size of 10 μm to emulsify the water phase and oil phase obtained above to prepare an oil-in-water emulsion to obtain a unifo...

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