Flame-retardant high-impact polystyrene composite material and preparation method thereof

A technology of polystyrene and composite materials, which is applied in the field of polymer flame retardant materials, can solve problems such as limiting the scope of application, and achieve the effects of increasing the amount of carbon residue, improving thermal stability, and reducing the peak value of heat release rate

Active Publication Date: 2020-08-11
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flammability of high-impact polystyrene limits its application range. Therefore, the increasing commercial demand has prompted people to develop effective and environmentally friendly flame retardants to enhance the fire performance of high-impact polystyrene.

Method used

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  • Flame-retardant high-impact polystyrene composite material and preparation method thereof
  • Flame-retardant high-impact polystyrene composite material and preparation method thereof
  • Flame-retardant high-impact polystyrene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. Preparation of high-impact polystyrene / modified ammonium polyphosphate / graphene composite (12:85:3)

[0052] Add 1.5 g of silane coupling agent Si-171 to 50 mL of absolute ethanol and stir for 11 min, heat the stirred solution to 90° C., and stir for 55 min to obtain solution A.

[0053] Disperse 50g of ammonium polyphosphate in 200mL of absolute ethanol, stir well to disperse it evenly, the stirring time is 33min, and obtain solution B. Then solution B was added to solution A, keeping the temperature of the reaction system at 45°C, fully reacting for 130min under stirring to obtain product C. Finally, product C was subjected to suction filtration, dried in a vacuum oven at 90° C. for 4.5 hours, ground and pulverized, and then passed through a 300-mesh sieve to obtain modified product D (the stirring speeds above were all 500 r / min).

[0054] Add the modified product D, high-impact polystyrene and graphene into the torque rheometer at a ratio of 12:85:3, adjust the ...

Embodiment 2

[0058] 1. Preparation of high-impact polystyrene / modified ammonium polyphosphate / graphene composite (9:85:6)

[0059] Add 1.5 g of silane coupling agent Si-171 to 50 mL of absolute ethanol and stir for 13 min, heat the stirred solution to 90° C., and stir for 50 min to obtain solution A.

[0060] Disperse 50g of ammonium polyphosphate in 200mL of absolute ethanol, stir well to disperse evenly, and stir for 28min to obtain solution B. Then solution B was added to solution A, keeping the temperature of the reaction system at 50°C, and fully reacted for 115 minutes under stirring to obtain product C. Finally, product C was subjected to suction filtration, dried in a vacuum oven at 85° C. for 5 hours, ground and pulverized, and passed through a 300-mesh sieve to obtain modified product D (the above stirring speeds were all 400 r / min).

[0061] Add the modified product D, high-impact polystyrene and graphene into the torque rheometer at a ratio of 9:85:6, adjust the roll temperatu...

Embodiment 3

[0065] 1. Preparation of high-impact polystyrene / modified ammonium polyphosphate / graphene composite (7.5:85:7.5)

[0066] Add 1.5 g of silane coupling agent Si-171 to 50 mL of absolute ethanol and stir for 8 min, heat the stirred solution to 85° C., and stir for 65 min to obtain solution A.

[0067] Disperse 50g of ammonium polyphosphate in 200mL of absolute ethanol, stir well to disperse evenly, the stirring time is 34min, and obtain solution B. Then solution B was added to solution A, keeping the temperature of the reaction system at 55°C, and fully reacted for 125 minutes under stirring to obtain product C. Finally, product C was subjected to suction filtration, dried in a vacuum oven at 95° C. for 4 hours, ground and pulverized, and then passed through a 300-mesh sieve to obtain modified product D (the above stirring speeds were all 300 r / min).

[0068] Add the modified product D, high-impact polystyrene and graphene into the torque rheometer at a ratio of 7.5:85:7.5, adj...

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Abstract

The invention provides a flame-retardant high-impact polystyrene composite material and a preparation method thereof. The flame-retardant high-impact polystyrene composite material comprises the following components in parts by mass: 85 parts of high-impact polystyrene, 3-15 parts of a modified phosphorus-based flame retardant, and 3-15 parts of a nano flame retardant. Wherein the modified phosphorus-based flame retardant is a silane coupling agent modified phosphorus-based flame retardant, and the mass ratio of the silane coupling agent to the phosphorus-based flame retardant is (2-7): 100. The phosphorus-containing flame retardant and the nano flame retardant have a synergistic effect in flame retardant effect, so that the flame retardant property of the composite flame retardant can beimproved, and the flame retardant property of the high-impact polystyrene composite material is enhanced. The preparation method is simple in process flow, wide in raw material source, non-toxic, harmless, green and environment-friendly, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of polymer flame-retardant materials, in particular to a flame-retardant high-impact polystyrene composite material and a preparation method thereof. Background technique [0002] High-impact polystyrene is a typical rubber-toughened resin material. It has the advantages of rigidity, good processability, easy coloring, and dimensional stability. It is widely used in industry, agriculture, national defense, science and technology and other fields. However, the flammability of high-impact polystyrene limits its application range. Therefore, the increasing commercial demand has prompted people to develop effective and environmentally friendly flame retardants to enhance the fire performance of high-impact polystyrene. [0003] At present, a variety of flame retardant methods such as fireproof coating technology, flame retardant filler technology, flame retardant solution soaking and chemical grafting flame reta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08K9/06C08K3/32C08K3/04C08K3/02B29B7/00B29C35/02
CPCC08K9/06C08K3/32C08K3/042C08K3/041C08K3/02B29B7/002B29C35/02C08L2201/02C08L2201/08C08K2201/011C08K2003/323C08K2201/014C08K2003/026C08K2003/321C08L51/04B29B7/005B29B7/90
Inventor 潘勇贾志猛石祥辉冯鑫蒋军成
Owner NANJING UNIV OF TECH
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