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Montmorillonite/polyaniline nano flame-retardant polystyrene composite material

A composite material and nano flame retardant technology, applied in the field of polymer flame retardant, can solve the problems of poor dispersion, easy agglomeration, damage to processing performance, etc., and achieve the effects of improving agglomeration, alleviating layer-by-layer accumulation and easy operation.

Active Publication Date: 2015-12-23
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic layered nano-flame retardants such as montmorillonite are easily agglomerated in the polymer matrix, which is their biggest defect. Poor dispersion leads to damage to the mechanical properties and processing properties of the polymer matrix.
It can be alleviated by particle refinement and surface treatment, but it cannot fundamentally solve the problem

Method used

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  • Montmorillonite/polyaniline nano flame-retardant polystyrene composite material
  • Montmorillonite/polyaniline nano flame-retardant polystyrene composite material
  • Montmorillonite/polyaniline nano flame-retardant polystyrene composite material

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Effect test

Embodiment 1

[0029] A kind of montmorillonite / polyaniline nano flame-retardant polystyrene composite material, its preparation method comprises the following steps:

[0030] (1) Add 5 mol of sodium dodecylbenzene sulfonate into 5 L of water, stir to dissolve and form a modifier solution.

[0031] (2) 50g of montmorillonite was added to the above solution, after ultrasonic dispersion for 6h, stirring and reacting for 48h to obtain a chemically modified montmorillonite suspension;

[0032] (3) Add 5g (0.0538mol) of aniline monomer to the above-mentioned chemically modified montmorillonite suspension, stir and disperse by ultrasonic waves;

[0033] (4) Add 0.269mol ammonium persulfate to the above-mentioned dispersion liquid, stir and react at room temperature for 12 hours, and prepare the montmorillonite / polyaniline nanocomposite;

[0034] (5) Put 1 part of montmorillonite / polyaniline nanocomposite prepared in step (4) and 99 parts of general polystyrene resin (PG-383, purchased from Taiwan...

Embodiment 2

[0043] A kind of montmorillonite / polyaniline nano flame-retardant polystyrene composite material, its difference with embodiment 1 is that the sodium dodecylbenzene sulfonate of 5mol in step (1) becomes 2.5mol hexadecyl Trimethylammonium bromide, the quality of montmorillonite changed from 50g to 40g, 0.269mol ammonium persulfate into 0.1076mol potassium persulfate, montmorillonite / polyaniline nanocomposite changed from 1 part to 2 parts, general poly The styrene resin becomes 98 parts.

Embodiment 3

[0045] A kind of montmorillonite / polyaniline nano flame-retardant polystyrene composite material, its difference with embodiment 1 is that the sodium dodecylbenzene sulfonate of 5mol in step (1) becomes 1.5mol polystyrene sulfonate Sodium acid, the quality of montmorillonite changed from 50g to 30g, 0.269mol ammonium persulfate into 0.1614mol anhydrous ferric chloride, montmorillonite / polyaniline nanocomposite changed from 1 part to 3 parts, general polyphenylene Vinyl resin becomes 97 parts.

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Abstract

The invention relates to a montmorillonite / polyaniline nano flame-retardant polystyrene composite material. The preparation method comprises: adding montmorillonite to a modifying agent, reacting under stirring, adding an aniline monomer, stirring, ultrasonically dispersing uniformly, adding an oxidation agent, and reacting at room temperature under stirring to obtain a montmorillonite / polyaniline nano complex; and mixing the material with polystyrene resin in a torque rheometer, and extruding and granulating with a double screw extruder to obtain the montmorillonite / polyaniline nano flame-retardant polystyrene composite material. The montmorillonite / polyaniline nano complex is prepared by adopting an in-situ polymerization method, and the flame retardance of the material is effectively improved by synergistic action between one-dimensional polyaniline and two-dimensional nano montmorillonite lamellae.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant polymers, and in particular relates to a halogen-free flame-retardant polymer nanocomposite material, in particular to a montmorillonite / polyaniline nanocomposite flame-retardant polystyrene composite material. Background technique [0002] Polystyrene (PS) is a thermoplastic polymer material second only to polyolefin and polyvinyl chloride. Since its appearance in the 1930s, it has been widely used in home improvement, construction, electrical appliances, automotive interior parts and aviation because of its excellent electrical insulation, good dimensional stability, chemical corrosion resistance and processing performance. . However, PS and its homologous polymer materials, like most other polymer materials, are easy to burn, have a large heat release, and produce a large amount of smoke. They are flammable materials, which limits their application. Therefore, the research on the flam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L79/02C08K9/04C08K3/34C08G73/02B29C47/92B29C48/92
Inventor 韩永芹李廷希王天琪高萧萧王圣武张强田秀娟
Owner SHANDONG UNIV OF SCI & TECH
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