Application of silicon carbide whisker as flame-retardant anti-dripping agent of resin composition and resin composition containing silicon carbide whisker

A technology of resin composition and silicon carbide whiskers, which is applied in the field of flame retardant modification of polymer materials, can solve problems such as secondary combustion and dripping, achieve wider application range, improve anti-dripping effect, and break singleness Effect

Active Publication Date: 2016-04-13
SHANGHAI KINGFA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some polymers will drip when they burn, which is easy to cause secondary combustion. In order to prevent the dripping phenomenon of polymers when they burn, it is necessary to add anti-dripping agents. The anti-dripping agents currently used in polymers Basically all polytetrafluoroethylene type anti-dripping agents

Method used

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  • Application of silicon carbide whisker as flame-retardant anti-dripping agent of resin composition and resin composition containing silicon carbide whisker
  • Application of silicon carbide whisker as flame-retardant anti-dripping agent of resin composition and resin composition containing silicon carbide whisker
  • Application of silicon carbide whisker as flame-retardant anti-dripping agent of resin composition and resin composition containing silicon carbide whisker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The parts by weight are 100 parts of polypropylene, 21 parts of flame retardant A, 7 parts of flame retardant C, 0.32 parts of silicon carbide whiskers A, 0.12 parts of antioxidant A, 0.1 part of antioxidant D, 0.12 parts of Add lubricant A, 0.07 parts of light stabilizer A, and 0.05 part of light stabilizer B into a high-speed mixer for uniform mixing. Wherein, the temperature of the high-speed mixer is 63° C., and the speed of the high-speed mixer is 130 rpm. Then put the mixed material into a twin-screw extruder for extrusion, cooling, granulation, and packaging. The temperature of the extruder is 180°C, 195°C, 195°C, 190°C, 190°C, 190°C, 185°C, 185°C from the feeding section to the machine head, the screw speed is 180 rpm, and the screw length-to-diameter ratio for 36. Its flame retardant properties are shown in Table-1.

Embodiment 2

[0036] The parts by weight are 100 parts of polypropylene, 23 parts of flame retardant B, 7 parts of flame retardant C, 0.65 parts of silicon carbide whiskers B, 0.2 parts of antioxidant A, 0.25 parts of antioxidant D, 0.28 parts of Add lubricant A, 0.15 parts of light stabilizer A, and 0.13 parts of light stabilizer B into a high-speed mixer for uniform mixing. Wherein, the temperature of the high-speed mixer is 63° C., and the speed of the high-speed mixer is 130 rpm. Then put the mixed material into a twin-screw extruder for extrusion, cooling, granulation, and packaging. The temperature of the extruder is 180°C, 195°C, 195°C, 190°C, 190°C, 190°C, 185°C, 185°C from the feeding section to the machine head, the screw speed is 180 rpm, and the screw length-to-diameter ratio for 36. Its flame retardant properties are shown in Table-1.

Embodiment 3

[0040] 100 parts by weight of polypropylene, 30 parts of flame retardant D, 0.93 parts of silicon carbide whiskers C, 0.15 parts of antioxidant A, 0.25 parts of antioxidant D, 0.2 parts of lubricant A, 0.1 part of light stabilizer Add agent A and 0.1 part of light stabilizer B into a high-speed mixer and mix evenly. Wherein, the temperature of the high-speed mixer is 60° C., and the speed of the high-speed mixer is 120 rpm. Then put the mixed material into a twin-screw extruder for extrusion, cooling, granulation, and packaging. The temperature of the extruder is 180°C, 195°C, 195°C, 190°C, 190°C, 190°C, 185°C, 185°C from the feeding section to the machine head, the screw speed is 180 rpm, and the screw length-to-diameter ratio for 40. Its flame retardant properties are shown in Table-1.

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Abstract

The invention provides an application of a silicon carbide whisker as a flame-retardant anti-dripping agent of a composition and the resin composition containing the silicon carbide whisker. The diameter D of the silicon carbide whisker is smaller than 1.5mu m and the length-diameter ratio L/D of the silicon carbide whisker is (20 to 1)-(30 to 1). The silicon carbide whisker can be added to flame retardant materials as an anti-dripping agent instead of traditional polytetrafluoroethylene anti-dripping agents and has better effects than the polytetrafluoroethylene anti-dripping agents under the condition of the same content.

Description

technical field [0001] The invention relates to the field of flame-retardant modification of polymer materials, in particular to the use of silicon carbide whiskers as a flame-retardant and anti-dripping agent for resin compositions and a resin composition containing silicon carbide whiskers. Background technique [0002] With the development of society, people's flame retardant requirements for materials are also constantly improving, including flame retardant requirements for polymers, such as polyethylene, polypropylene, polyamide, polycarbonate, acrylonitrile-butadiene-benzene For materials such as vinyl resin and polyester, some flame retardant requirements even need to meet the V0 level or higher level of UL-94. [0003] In order to improve the flame retardancy of polymers, a common method is to add flame retardants to polymers. Flame retardants are divided into two categories: halogenated flame retardants and halogen-free flame retardants according to whether they con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K7/10C08L23/12C08L69/00C08L55/02C08L77/02C08L67/02C08K13/04
CPCC08K7/10C08K13/04C08K2201/003C08K2201/004C08L2201/02C08L23/12C08L55/02C08L69/00C08L77/02C08L67/02
Inventor 赵鹏伟夏建盟
Owner SHANGHAI KINGFA SCI & TECH
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