Halogen-free flame retarding high-impact polystyrene (HIPS) composite material and preparation method thereof

A technology for flame-retardant high-impact polystyrene and composite materials, which is applied in the field of polymer materials and can solve problems such as low mechanical properties

Inactive Publication Date: 2010-07-07
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the continuous improvement of people's requirements for environmental protection, halogen-free flame-retardant HIPS materials have been developed, such as a HIPS compound disclosed in Chinese patent application CN101372548A, but it has the problem of low mechanical properties

Method used

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  • Halogen-free flame retarding high-impact polystyrene (HIPS) composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Formula: 85 parts by weight of high-impact polystyrene, 15 parts by weight of polyphenylene ether as a char-forming agent, 20 parts by weight of flame retardant microcapsule red phosphorus, and toughening agent styrene-ethylene-butylene-styrene block copolymer 15 parts by weight, 1.5 parts of auxiliary flame retardant polytetrafluoroethylene, 1.5 parts of auxiliary flame retardant nanoclay, and 10100.5 parts of antioxidant.

[0020] Preparation:

[0021] 1. Preparation of HIPS / co-flame retardant masterbatch

[0022] The HIPS, auxiliary flame retardant PTFE, and auxiliary flame retardant nanoclay are mixed uniformly under high-speed stirring at a weight ratio of 70 parts, 15 parts, and 15 parts, and then melted, mixed and granulated in a twin-screw extruder. The temperature of each section of the barrel is controlled at 170-190°C, and the twin-screw speed is 100r / min.

[0023] 2. Preparation of halogen-free flame-retardant HIPS composites

[0024] HIPS, char-forming a...

Embodiment 2

[0026] Formula: 65 parts by weight of high-impact polystyrene, 35 parts by weight of polyphenylene ether as a char-forming agent, 5 parts by weight of flame retardant microcapsule red phosphorus, and toughening agent styrene-ethylene-butylene-styrene block copolymer 4 parts by weight, 0.3 part of auxiliary flame retardant polytetrafluoroethylene, 0.3 part of auxiliary flame retardant boehmite, 0.1 part of antioxidant 1010.

[0027] Preparation:

[0028] 1. Preparation of HIPS / co-flame retardant masterbatch

[0029] HIPS, auxiliary flame retardant PTFE, and auxiliary flame retardant nanoclay are mixed uniformly under high-speed stirring at a weight ratio of 90 parts, 5 parts, and 5 parts, and then melted, kneaded and granulated in a twin-screw extruder. The temperature of each section of the barrel is controlled at 170-190°C, and the twin-screw speed is 400r / min.

[0030] 2. Preparation of halogen-free flame-retardant HIPS composites

[0031] HIPS, char-forming agent, flame ...

Embodiment 3

[0033] Formula: 72 parts by weight of high-impact polystyrene, 28 parts by weight of polyphenylene ether as a char-forming agent, 10 parts by weight of flame retardant microcapsule red phosphorus, and toughening agent styrene-ethylene-butylene-styrene block copolymer 8 parts by weight, 0.5 part of auxiliary flame retardant polytetrafluoroethylene, 0.5 part of auxiliary flame retardant nanoclay, 0.2 part of antioxidant 1010, and 0.2 part of antioxidant 168.

[0034] Preparation:

[0035] 1. Preparation of HIPS / co-flame retardant masterbatch

[0036] The HIPS, auxiliary flame retardant PTFE, and auxiliary flame retardant nanoclay are mixed uniformly under high-speed stirring at a weight ratio of 80 parts, 10 parts, and 10 parts, and then melted, mixed and granulated in a twin-screw extruder. The temperature of each section of the barrel is controlled at 170-190°C, and the twin-screw speed is 200r / min.

[0037] 2. Preparation of halogen-free flame-retardant HIPS composites

[...

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Abstract

The invention discloses a halogen-free flame retarding high-impact polystyrene (HIPS) composite material and a preparation method thereof, belonging to the macromolecular material technical field. The halogen-free flame retarding HIPS composite material includes the following weight parts of components: 65-85 parts of HIPS, 15-35 parts of charring agent PPO, 5-20 parts of flame retardant MRP, 4-15 parts of toughener SEBS, 0.3-1.5 part(s) of assistant flame retardant PTFE, 0.3-1.5 part(s) of assistant flame retardant nano inorganic filling, and 0.1-0.5 part of antioxidant. The preparation method includes that firstly, the HIPS, the assistant flame retardant PTFE and the assistant flame retardant nano inorganic filling are stirred at high speed and mixed evenly in a certain weight proportion, melted and pelletized in a double-screw extruder to produce the HIPS and assistant flame retardant master batch; secondly, the HIPS, the charring agent, the flame retardant, the toughener, the HIPS and assistant flame retardant master batch and the antioxidant are stirred at high speed and mixed evenly in a certain weight proportion and then melted and pelletized in the double-screw extruder. The halogen-free flame retarding HIPS composite material includes no halogen and maintains excellent mechanical performances while reaching the high flame retarding level.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a halogen-free flame-retardant high-impact polystyrene composite material and a preparation method thereof. Background technique [0002] High-impact polystyrene (HIPS) is a modified variety of polystyrene (PS), containing 2% to 15% of styrene-butadiene or butadiene rubber. Compared with PS, it has higher toughness and impact strength, and It retains the advantages of easy molding and processing of PS, and can be processed by injection molding, extrusion molding, vacuum blister, etc., and is widely used in household appliances, office equipment, instruments, auto parts, daily appliances and packaging materials. The limiting oxygen index (LOI) of HIPS is 18%. It is a flammable plastic and produces toxic gas and black smoke when burned, which limits its use in some occasions requiring flame retardancy. With the increasing requirements for fire protection in v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08L71/12C08L53/02C08L27/18C08K13/06C08K9/10C08K3/02C08K3/34C08K3/22C08K5/13C08K5/524B29B9/06B29C47/92B29C48/40B29C48/92
CPCB29C48/04B29C48/40
Inventor 刘颖吴大鸣林春平许红赵利涛陈聪
Owner BEIJING UNIV OF CHEM TECH
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