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White graphene modified polystyrene composite material and preparation method thereof

A technology of white graphene and polystyrene, which is applied in the field of white graphene modified polystyrene composite materials and its preparation, and can solve problems affecting mechanical strength and the like

Inactive Publication Date: 2018-08-10
GUANGDONG NANOLUTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although various tougheners, heat-resistant modifiers and flame retardants have improved the toughness, heat resistance and flame retardancy of PS to a certain extent, they have seriously affected the mechanical strength of PS.

Method used

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  • White graphene modified polystyrene composite material and preparation method thereof

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preparation example Construction

[0036] The present invention also provides the preparation method of above-mentioned white graphene modified polystyrene composite material, comprises the following steps:

[0037] Mix 90-110 parts of styrene, 0.5-10 parts of polymer-modified white graphene, 0.05-2 parts of flame retardant, 0.05-2 parts of antioxidant and 0.01-0.1 part of initiator, and mix well under the protection of inert gas , react at a temperature of 80°C-90°C for 3-6h to obtain a reaction solution, then mix the reaction solution with 100-150 parts of a dispersion medium, then pour it into an inert solvent, collect the resulting precipitate and dry it to obtain white graphene Modified polystyrene composite.

[0038]The order of adding the above materials is not particularly limited. In one embodiment, the initiator is added first, and then the remaining components are slowly added in an inert gas atmosphere to promote the complete reaction of the styrene monomer. In addition, after the polymerization re...

Embodiment 1

[0063] Step 1) Preparation of polymer-modified white graphene: Take 0.5 parts of white graphene powder and add it to a round-bottomed flask, and add 100 parts of distilled water to the round-bottomed flask, then ultrasonically disperse it, and add 0.1 parts to the round-bottomed flask Sodium lauryl sulfate, ultrasonically stirred at high speed to obtain lipophilic modified white graphene; after heating the lipophilic modified white graphene aqueous dispersion to 60°C, add 0.5 parts of initiator azobisisobutyronitrile, After stirring for 10 minutes, start to add 0.05 parts of styrene dropwise, and finish dropping in 0.5 hours. After the dropwise addition, keep warm for 0.5h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, dry and grind in vacuum at 60°C to obtain pol...

Embodiment 2

[0067] Step 1) Preparation of polymer-modified white graphene: Take 2 parts of white graphene powder and add it to a round-bottomed flask, and add 100 parts of ethanol to the round-bottomed flask, then ultrasonically disperse it, and add 0.2 parts to the round-bottomed flask Sodium dodecyl sulfate, ultrasonically stirred at high speed to obtain lipophilic modified white graphene; after heating the lipophilic modified white graphene ethanol dispersion to 90°C, add 1 part of initiator ammonium persulfate, and stir for 15 minutes Start to add 0.5 parts of styrene dropwise, and finish dropping in 0.6h. After the dropwise addition, keep warm for 1 h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, and vacuum dry and grind at 70°C to obtain polystyrene coating modificatio...

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Abstract

The invention provides a white graphene modified polystyrene composite material and a preparation method thereof. The white graphene modified polystyrene composite material is prepared from the following raw materials in parts by weight: 90-110 parts of styrene, 0.5-10 parts of polymer modified white graphene, 0.05-2 parts of flame retardant, 0.05-2 parts of antioxidant and 0.01-0.1 part of initiator. The white graphene modified polystyrene composite material has higher mechanical strength while having flame retardance and smoke suppression performance.

Description

technical field [0001] The invention relates to the technical field of polymer material modification, in particular to a white graphene modified polystyrene composite material and a preparation method thereof. Background technique [0002] Polystyrene (PS) is a polymer synthesized by free radical addition polymerization of styrene monomer. It has the advantages of transparency, good formability, good rigidity, good electrical insulation performance, easy dyeing, low hygroscopicity and low price. It has been widely used in electronics, automobiles, construction, packaging, home appliances, daily necessities, toys and other industries. However, PS is brittle, not resistant to impact, poor in heat resistance, low in heat distortion temperature (generally at 78-98°C), easy to burn and produces a large amount of smoke, and is a flammable material, so its application is limited. [0003] At present, in order to solve the shortcomings of PS, the toughness and stress crack resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K9/10C08K7/00C08K3/38
CPCC08K3/38C08K7/00C08K9/10C08K2003/385C08L25/06
Inventor 段曦东赵涛楠王剑
Owner GUANGDONG NANOLUTION SCI & TECH CO LTD
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