Halogen-free flame retarding polymer sheet material

A technology of flame retardant polymer and flame retardant polyester, which is applied in plastic/resin/wax insulators, organic insulators, etc., can solve the problems of large amount of flame retardant, decreased tear resistance and folding resistance, and high water absorption rate of products. , to achieve the effect of high flame retardancy and high heat resistance

Inactive Publication Date: 2009-05-20
JINAN UNIVERSITY
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  • Abstract
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Problems solved by technology

Hydroxide flame retardants are represented by magnesium hydroxide and aluminum hydroxide, but even if the addition amount is more than 60wt%, it is difficult to make polypropylene reach the UL94 V0 flame retardant level required by the 0.125mm-0.75mm insulating sheet, which leads to Flame-retardant polypropylene is difficult to process, and the tear resistance and bending resistance are seriously reduced
Phosphorus-based flame retardants are represented by red phosphorus and organic phosphates. The addition amount is lower than that of hydroxide, and a large amount of addition is required to achieve a high flame-retardant grade. Because of the large amount of flame retardants, the water absorption rate of the product is large and High ex

Method used

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  • Halogen-free flame retarding polymer sheet material
  • Halogen-free flame retarding polymer sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare halogen-free flame-retardant polymer particles by step-by-step method. First, 10 kilograms of N-substituted alkoxy hindered amine Flamestab NOR 116FF of American Ciba Company, 0.3 kilogram of Ciba Antioxidant 1010 and 100 kilograms of German Basel Company The copolymerized polypropylene EP332K is extruded and granulated by a twin-screw extruder to obtain halogen-free flame-retardant polypropylene pellets. Then, 110.3 kg of halogen-free flame-retardant polypropylene pellets, 40 kg of U.S. DuPont's halogen-free flame-retardant polyethylene terephthalate RE19041 and 10 kg of French ARKEMA company's ethylene and glycidyl methacrylate AX8840 were passed through The halogen-free flame-retardant polymer particles of the present invention are obtained by extruding and granulating with a twin-screw extruder. Finally, the heat distortion temperature of the halogen-free flame-retardant polymer particles is measured according to the ASTM D648 standard, and then pressed into...

Embodiment 2

[0025] To prepare halogen-free flame-retardant polymer particles by direct method, 20 kg of red phosphorus RPM650 from Zhonglan Research Institute of Chemical Industry, 0.3 kg of Ciba Antioxidant 168 and 100 kg of copolymerized polypropylene EP332K from Basel, Germany, were passed through a twin-screw The feed port at the front of the extruder is fed into the extruder, and the material reaches the second feed port after preliminary melting, 80 kg of halogen-free flame-retardant polyethylene terephthalate RE19041 from DuPont of the United States and 25 kg of ethylene and Glycidyl methacrylate AX8840 is fed into the extruder by a forced feeding device, melted, extruded and granulated to obtain the halogen-free flame-retardant polymer particles of the present invention. Finally, the heat distortion temperature of the halogen-free flame-retardant polymer particles is measured according to the ASTM D648 standard, and then pressed into 0.125mm, 0.25mm, 0.41mm and 0.75mm thick sheets ...

Embodiment 3

[0027]Prepare halogen-free flame-retardant polymer particles by step-by-step method. First, 80 kg of ammonium polyphosphate-based composite flame retardant AP 750, 0.3 kg of Ciba Antioxidant 1010 and 100 kg of German Basel The company's copolymerized polypropylene EP332K is extruded and granulated by a twin-screw extruder to obtain halogen-free flame-retardant polypropylene pellets. Then, 180.3 kg of halogen-free flame-retardant polypropylene pellets, 100 kg of halogen-free flame-retardant polybutylene terephthalate PB40G10HU from Polyone Company of the United States, and 40 kg of ethylene and glycidyl methacrylate from French ARKEMA Company The ester AX8840 is extruded and granulated by a twin-screw extruder to obtain the halogen-free flame-retardant polymer particles of the present invention. Finally, the heat distortion temperature of the halogen-free flame-retardant polymer particles is measured according to the ASTM D648 standard, and then pressed into 0.125mm, 0.25mm, 0....

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Abstract

The invention discloses a halogen-free fire-retardant polymer sheet and pertains to the field of insulation material. The halogen-free fire-retardant polymer sheet is characterized by mainly being prepared by the following components according to the weight portions: 100 portions of polypropylene, 10 portions to 80 portions of halogen-free polypropylene fire retardant, 20 portions to 100 portions of halogen-free fire-retardant polyester and 5 portions to 40 portions of compatilizer, wherein, the compatilizer refers to as functionalized macromolecule capable of realizing compatibilization effect between the polypropylene and the halogen-free fire-retardant polyester. The method disperses one or more halogen-free polyesters with lower combustibility into thin halogen-free fire-retardant polypropylene sheet by a melt blending method, solves the technological difficulty that the existing halogen-free fire-retardant system is very hard to lead thin polypropylene sheet to reach a higher fire-retardant degree at the mentioned thickness. The fire-retardant polypropylene sheet has the properties of environmental protection, high fire-retardancy and high heat resistance, and is mainly used for insulation in live components in the electrical and electronic industries.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polymer sheet, more specifically, the invention relates to a polypropylene-based gasket material with environmental protection, high flame retardancy and high heat resistance, which belongs to an insulating material . Background technique [0002] Calendering flame-retardant polypropylene into a sheet between 0.125mm and 0.75mm has the advantages of flame retardancy, pressure resistance, temperature resistance, tear resistance and bending resistance, and has been widely used as a spacer insulation material for live parts in electrical and electronic products. . Today, the most widely used in the world market is the flame-retardant FORMEX of ITW Company of the United States. TM 、FORMEX TM GK and STATEX TM A series of flame-retardant polypropylene insulating gaskets, ITW company patent US 5521003 discloses flame-retardant polypropylene sheets prepared from homopolypropylene, copolymerized polyp...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L67/00C08K5/17C08K5/3492C08K3/02C08K3/32C08K5/527C08K5/52C08L51/06C08L23/08H01B3/44
Inventor 林志丹张秀菊
Owner JINAN UNIVERSITY
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