A graphene-containing static-electricity-conducting polystyrene foaming material and a preparing method thereof

A technology of polystyrene foaming and polystyrene, which is applied in the field of polystyrene foaming materials and its preparation, can solve the problems of complex graphene preparation process, human dust hazards, and large amount of addition, so as to improve the perforation of beads Phenomenon, avoiding electrostatic hazards, reducing the effect of perforation problems

Inactive Publication Date: 2017-11-10
无锡兴达泡塑新材料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technology, the preparation process of graphene is more complicated, the addition amount is more (3.5wt%-5.5wt%), the cost is high, and the dispersion in styrene is not good, and the improvement effect is not ideal
[0006] In addition, the density of graphene is small, and it is easy to cause dust hazards to the human body during use. At the same time, some trace elements on graphene have a certain inhibitory effect on the polymerization of styrene. Under the traditional foaming process conditions, carbon materials ( The addition of carbon black, graphite, carbon nanotubes) can easily cause the perforation of the foam particles

Method used

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  • A graphene-containing static-electricity-conducting polystyrene foaming material and a preparing method thereof
  • A graphene-containing static-electricity-conducting polystyrene foaming material and a preparing method thereof
  • A graphene-containing static-electricity-conducting polystyrene foaming material and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Disperse the surface-treated graphene into styrene to prepare a 0.4wt% graphene styrene dispersion, stir at high speed for 30 minutes, then grind it with a sand mill for 0.5 hour, and 20kg of the above-mentioned ground graphene styrene Add ethylene slurry, 30kg deionized water, and 60g compound dispersant to the reaction kettle in turn, stir for 30 minutes for pre-dispersion, the stirring speed is 280 rpm, add 200g of low-temperature initiator benzoyl peroxide, start to heat up, heat up Add 20g of high-temperature initiator tert-butyl peroxybenzoate to 60°C, continue to heat up to 90°C, add 40g of compound dispersant after constant temperature for 30 minutes, and then react at constant temperature for 5.5 hours, after that, add 1kg of pentane, and continue the reaction Heat up the kettle to make the temperature of the reactor reach 120°C and the pressure reach 0.6 MPa, and keep it at this temperature and pressure for 4 hours, stop the heating after the reaction is comple...

Embodiment 2

[0046] Disperse the surface-treated graphene into styrene to prepare a 0.6wt% graphene styrene dispersion, stir at high speed for 30 minutes, then grind it with a sand mill for 1 hour, and 20 kg of the above-mentioned ground graphene styrene Ethylene slurry, 40kg deionized water, and 80g compound dispersant were added to the reaction kettle in turn, stirred for 30 minutes for pre-dispersion, the stirring speed was 280 rpm, and 300g of low-temperature initiator benzoyl peroxide was added, and the temperature began to rise. Add 40g of high-temperature initiator tert-butyl peroxybenzoate to 60°C, continue to heat up to 90°C, add 80g of compound dispersant after constant temperature for 30 minutes, and then react at constant temperature for 6 hours, after that, add 1.1kg of pentane, and continue to The reaction kettle is heated up so that the temperature of the reaction kettle reaches 120° C. and the pressure reaches 0.6 MPa, and is maintained at this temperature and pressure for 4...

Embodiment 3

[0048] Disperse the surface-treated graphene into styrene to prepare a 0.8wt% graphene styrene dispersion, stir at high speed for 30 minutes, then grind it with a sand mill for 1.5 hours, and 20 kg of the above-mentioned ground graphene styrene Add ethylene slurry, 50kg deionized water, and 100g compound dispersant to the reaction kettle in turn, stir for 30 minutes for pre-dispersion, the stirring speed is 280 rpm, add 400g of low-temperature initiator benzoyl peroxide, start to heat up, heat up Add 60g of high-temperature initiator tert-butyl peroxybenzoate to 60°C, continue to heat up to 90°C, add 100g of compound dispersant after constant temperature for 30 minutes, and then react at constant temperature for 6.5 hours, after that, add 1.2kg of pentane, and continue to The reaction kettle is heated up so that the temperature of the reaction kettle reaches 120° C. and the pressure reaches 0.6 MPa, and is maintained at this temperature and pressure for 4 hours. After the react...

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Abstract

A graphene-containing static-electricity-conducting polystyrene foaming material and a preparing method thereof are disclosed. The weight of graphene in the material is 0.4-1 wt% of the total weight of a styrene monomer and graphene before polymerization. Prepared graphene/polystyrene beads are subjected to foaming, plate pressing and molding to obtain a foam plate. The surface resistance of the foam plate is 10<6>-10<8> [omega], the antistatic requirement is met, the flame retardance grade of the foam plate can be the B1 grade, the heat conductivity decreases from original 0.039-0.042 W/(m.K) to 0.030-0.034 W/(m.K), and the drawing performance increases from original 90 KPa to 220-260 KPa.

Description

technical field [0001] The invention relates to a polystyrene foam material and a preparation method thereof, in particular to a polystyrene foam material with an antistatic function and a preparation method thereof, belonging to the field of high molecular polymers. Background technique [0002] In the actual use of EPS, for high-precision electronic products, especially for modern electrical appliances, when packaging large-scale integrated block structural components, in order to avoid electrostatic hazards to the packaging, the surface must have a certain antistatic ability. The traditional method to improve the antistatic performance of foam plastics is to add antistatic agents to the system. During use, the antistatic agents will gradually migrate from the inside of the matrix to improve the antistatic performance of foam plastics. , the antistatic agent is gradually lost, and the antistatic performance becomes worse or even disappears, so the antistatic stability of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K3/04C08K9/00C08F112/08C08J9/14
CPCC08F112/08C08J9/141C08J2203/14C08J2325/06C08K3/04C08K9/00C08K2201/001C08K2201/003C08K2201/006C08K2201/017C08L25/06
Inventor 刘莉莉田振宇陈坤唐润理瞿研华啸威
Owner 无锡兴达泡塑新材料股份有限公司
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