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Foamable polystyrene and a preparing method thereof

A polystyrene and foaming technology, applied in the field of high molecular polymers, can solve the problems of complex graphene preparation process, poor dispersion of styrene, unsatisfactory improvement effect, etc., and achieves short reaction time and good isolation. The effect of heat and small additions

Active 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

Method used

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  • Foamable polystyrene and a preparing method thereof
  • Foamable polystyrene and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Add 75 grams of styrene, 0.15 grams of SE1430 graphene, 112 grams of deionized water, and 0.3 grams of compound dispersant to the reaction kettle in turn, and mechanically stir for 30 minutes for pre-dispersion at a stirring speed of 280 rpm. Benzoyl 0.75g, start to heat up, heat up to 60°C, add 0.4g of high-temperature initiator tert-butyl peroxybenzoate, continue to heat up to 90°C, add 0.3g of dispersant after constant temperature for 30min, and then react at constant temperature at 90°C After 5.5 hours, add 6 g of pentane to the mixture, continue heating to 120° C., keep the temperature constant for 5 hours, cool to 40° C., discharge, wash and dry to obtain expandable polystyrene beads of the present invention.

Embodiment 2

[0046] Add 75 grams of styrene, 0.30 grams of SE1430 graphene, 150 grams of deionized water, and 0.3 grams of compound dispersant to the reaction kettle in sequence, and mechanically stir for 30 minutes for pre-dispersion at a stirring speed of 280 rpm. Benzoyl 0.75g, start to heat up, heat up to 60°C, add 0.4g of high-temperature initiator tert-butyl peroxybenzoate, continue to heat up to 90°C, add 0.3g of dispersant after constant temperature for 30min, and then react at constant temperature at 90°C After 5.5 hours, add 9 g of pentane to the mixture, continue heating to 120° C., keep the temperature constant for 5 hours, cool to 40° C., discharge, wash and dry to obtain expandable polystyrene beads.

Embodiment 3

[0048] Add 75 grams of styrene, 0.15 grams of SE1231 graphene, 112 grams of deionized water, and 0.3 grams of compound dispersant to the reaction kettle in sequence, and mechanically stir for 30 minutes for pre-dispersion at a stirring speed of 280 rpm. Benzoyl 0.75g, start to heat up, heat up to 60°C, add 0.4g of high-temperature initiator tert-butyl peroxybenzoate, continue to heat up to 90°C, add 0.3g of dispersant after constant temperature for 30min, and then react at constant temperature at 90°C After 5.5 hours, add 6 g of pentane to the mixture, continue heating to 120° C., keep the temperature constant for 5 hours, cool to 40° C., discharge, wash and dry to obtain expandable polystyrene beads.

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Abstract

Foamable polystyrene and a preparing method thereof are disclosed. The weight of graphene in the foamable polystyrene is 0.2-1 wt% of the total weight of a styrene monomer before polymerization. The foamable polystyrene prepared can be subjected to plate pressing and molding to obtain a foam plate. 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 260 KPa.

Description

technical field [0001] The invention relates to a foamable polystyrene and a preparation method thereof, in particular to a polystyrene foam compounded with graphene and a preparation method thereof, belonging to the field of high molecular polymers. Background technique [0002] Expandable polystyrene (EPS) is a foam material prepared by physical foaming. It has the advantages of low thermal conductivity, good electrical insulation, low water absorption, excellent sound insulation, shock resistance, moisture resistance, and simple molding process. , so it is widely used in sound insulation materials, shockproof materials and thermal insulation materials, especially in the field of building insulation, expandable polystyrene has a very good application prospect, and plays the role of energy saving and environmental protection. [0003] It has been more than 60 years since BASF in Germany developed expandable polystyrene in 1949. The performance of pure EPS can no longer meet...

Claims

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Application Information

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IPC IPC(8): C08F112/08C08F2/44C08K7/00C08K3/04C08J9/14C08L25/06
Inventor 刘莉莉田振宇陈坤瞿研华啸威
Owner 无锡兴达泡塑新材料股份有限公司
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