Nanometer flame-proof polyethylene glycol terephthalate engineering plastics and preparation thereof

A technology of polyethylene terephthalate and polyethylene terephthalate, which is applied in the field of nano-flame-retardant polyethylene terephthalate engineering plastics and its preparation, and can solve the problem of affecting the mechanical properties of materials, etc. problem, to achieve good gloss, excellent flame retardant performance, low price effect

Inactive Publication Date: 2008-10-08
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the modified nano-MH is used alone as a flame retardant, although it can be uniformly dispersed, the dosage is generally 40-60%, which seriously affects the mechanical properties of the material

Method used

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  • Nanometer flame-proof polyethylene glycol terephthalate engineering plastics and preparation thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Prepare materials according to the formula of the sample in the table below; mix the dried polyethylene terephthalate masterbatch, flame retardant, nucleating agent, lubricant, antioxidant, toughener, compatibilizer and chain extender After the additives and additives are fully mixed in the high-speed mixer, they are added to the twin-screw extruder, and at the same time of melt extrusion, the reinforcing agent is added to the second feeding port of the twin-screw for melt extrusion, and the temperature of the extruder is set to As follows: 240 for the first zone; 245 for the second zone; 250 for the third zone; 255 for the fourth zone; 260 for the fifth zone; 260 for the sixth zone; 260 for the seventh zone; 260 for the eighth zone; -0.08Pa, extrusion granulation. Main engine speed during extrusion: 15~20r / min; feeding speed 7~10r / min. The extruded material is cooled, air-dried, pelletized, and dried to obtain nano flame-retardant polyethylene terephthalate engineerin...

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PUM

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Abstract

The invention relates to a nano-flame-retardant PET engineering plastic, which is composed of PET, composite flame retardant, toughener, compatibilizer and chain extender, wherein, the composite flame-retardant is the mixture of nano-magnesium hydroxide, nano-montmorillonite and melamine cyanurate. The preparation method is that dried PET master batches and various promoters are fully mixed in a high-speed mixer and then added into a twin-screw extruder; at the time when the master batches are melted and extruded out of the extruder, intensifier is added to a second feeding port of the twin-screws and then melted and extruded for granulation. The product of the invention has excellent flame retardant properties, good luster, stable size, low warpage, high modulus, high impact resistance and other performances; the product is of the original color and will not be restricted by color in follow-up processing, which can be widely used in electronic, electrical, automotive and other fields.

Description

technical field [0001] The invention relates to a nano flame-retardant polyethylene terephthalate (PET) engineering plastic and a preparation method thereof, belonging to the technical field of modified engineering plastics. Background technique [0002] PET engineering plastics have good mechanical properties, electrical insulation, chemical resistance, creep resistance, fatigue resistance, etc. PET is used as engineering plastics, and most of them use modified PET. The main purpose is to improve the strength. Heat resistance, combustion resistance, etc. Especially as PET is widely used in electronics, electrical, automobile and other industries, these industries have strict requirements on combustion and safety performance, so flame retardants are added to the polyester to improve the flame retardancy of the material and ensure the use of the product Safety has become an important topic in the research and development of polyester in recent years. Adding effective flame ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/06C08K3/22C08K3/34C08K5/3492C08J5/06B29B9/14B29C47/92B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/9259B29C2948/92828B29C2948/92866B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 施利毅丁鹏杨慧葛春华陈德杰胡秀兰
Owner SHANGHAI UNIV
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