Flame-retardant polystyrene nano-composite material and preparation method thereof

A technology of nano-composite materials and polystyrene, which is applied in the field of polystyrene composite flame-retardant materials, can solve problems such as flammability, and achieve improved thermal stability, improved compatibility and thermal stability, and good flame-retardant effects Effect

Inactive Publication Date: 2012-06-20
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polystyrene and its homologous polymer materials, like most other polymer materials, burn easily in air and produce a large amount of black smoke when burning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The first step, montmorillonite modification

[0017] a. Mix montmorillonite with deionized water at 60°C, the weight ratio of montmorillonite and deionized water is 1:0.5 and stir evenly to obtain montmorillonite slurry;

[0018] B, with the sodium hydroxide solution of concentration 3% by weight, adjust described montmorillonite slurry pH value to 8-9, obtain alkaline montmorillonite slurry;

[0019] c, the alkaline montmorillonite slurry is mixed with octadecyltrimethylammonium chloride according to the weight ratio of 30:1, and stirred evenly to obtain the montmorillonite modified mixture;

[0020] d, putting the montmorillonite modified mixture into a ball mill, and ball milling for 1 hour to obtain crude organic modified montmorillonite;

[0021] e. Put the crude organic modified montmorillonite into an oven for drying at a temperature of 70° C. for 15 hours to obtain dry crude organic modified montmorillonite;

[0022] f. Mill the dried crude organically modifi...

Embodiment 2

[0026] The first step, montmorillonite modification

[0027] a. Mix montmorillonite with deionized water at 65°C, the weight ratio of montmorillonite and deionized water is 1:1 and stir evenly to obtain montmorillonite slurry;

[0028] B, with the sodium hydroxide solution of concentration 4% by weight, adjust described montmorillonite slurry pH value to 8-9, obtain alkaline montmorillonite slurry;

[0029] c, the alkaline montmorillonite slurry is mixed with octadecyltrimethylammonium chloride according to the weight ratio of 40:1, and stirred evenly to obtain the montmorillonite modified mixture;

[0030] d. Put the modified montmorillonite mixture into a ball mill, mill it for 2 hours, put it into an oven at 72° C., and dry it for 17 hours to obtain organically modified montmorillonite.

[0031] In the second step, polystyrene, polyphenylene ether, and organically modified montmorillonite are mixed in parts by weight: 7.5 parts of polystyrene, 1.2 parts of polyphenylene et...

Embodiment 3

[0034] The first step, montmorillonite modification

[0035] a. Mix montmorillonite with deionized water at 70° C., the weight ratio of montmorillonite and deionized water is 1:1 and stir evenly to obtain montmorillonite slurry;

[0036] B, with the sodium hydroxide solution of 5% concentration by weight percentage, adjust described montmorillonite slurry pH value to 8-9, obtain alkaline montmorillonite slurry;

[0037] c, the alkaline montmorillonite slurry and octadecyltrimethylammonium chloride are mixed according to the weight ratio of 45:1, and stirred evenly to obtain the montmorillonite modified mixture;

[0038] d, put the montmorillonite modified mixture into a ball mill, and ball mill for 2.5 hours to obtain crude organic modified montmorillonite;

[0039] e. Put the crude organic modified montmorillonite into an oven for drying at a temperature of 75° C. for 20 hours to obtain dry crude organic modified montmorillonite;

[0040] f. Mill the dried crude organically...

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Abstract

The invention relates to a flame-retardant polystyrene nano-composite material with high thermal stability and a preparation method thereof, belonging to the technical field of flame-retardant polystyrene composite materials. The invention adopts the following technical scheme: the flame-retardant polystyrene nano-composite material is obtained by mixing polystyrene and organically-modified montmorillonoid at a certain proportion, and carrying out melt extrusion molding of the raw material mixture with a dual-screw extruding machine. The flame-retardant polystyrene nano-composite material disclosed by the invention has a good flame-retardant effect and an oxygen index up to 24%, a montmorillonoid nanometer sheet can be stripped from polystyrene, the thermal stability is greatly improved with respect to polystyrene, and the flame-retardant polystyrene nano-composite material can be prepared to flame-retardant polystyrene material or the flame-retardant masterbatch for future application. The flame-retardant polystyrene nanocomposite material can be widely used in the field of flame-retardant polystyrene nano-composite materials.

Description

technical field [0001] The invention discloses a polystyrene flame-retardant nanocomposite material and a preparation method thereof, belonging to the technical field of polystyrene composite flame-retardant materials. Background technique [0002] Polystyrene has the advantages of excellent electrical insulation, processing fluidity, good chemical resistance and rigidity, making it the third largest plastic in the world. However, polystyrene and its homologous polymer materials, like most other polymer materials, burn easily in air and produce large amounts of black smoke when burned. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides a polystyrene flame-retardant nano-composite material with high thermal stability and a preparation method thereof. [0004] In order to solve the above problems, the technical solution of the present invention is: [0005] A polystyrene flame-retardant nanocomposite material, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L71/12C08K9/04C08K3/34B29C47/92B29C48/92
CPCB29C48/40
Inventor 晏泓张猛董波王慧芳魏丽乔许并社
Owner TAIYUAN UNIV OF TECH
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