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Halogen-free flame-resistant polypropylene composition containing triazine expansion flame retardants and preparation of composition

A technology of intumescent flame retardant and flame retardant polypropylene, applied in the field of polymer materials, can solve the problems of easy reaction with ammonium polyphosphate, reduced mechanical properties of flame retardant polypropylene, easy migration, etc., and achieves good mechanical properties and flame retardant. High efficiency and the effect of improving flame retardant efficiency

Inactive Publication Date: 2017-06-30
江苏启蓝新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pentaerythritol (PER) is a small molecular polar substance that is easy to migrate in the polymer matrix and reacts easily with ammonium polyphosphate during processing And other shortcomings, resulting in reduced mechanical properties of flame retardant polypropylene

Method used

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  • Halogen-free flame-resistant polypropylene composition containing triazine expansion flame retardants and preparation of composition
  • Halogen-free flame-resistant polypropylene composition containing triazine expansion flame retardants and preparation of composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix 73 parts of PP 1215C, 9 parts of CFA, 9 parts of MEL and 9 parts of APP in a high-speed mixer for 2 minutes by weight, and then add them to the main hopper of a co-rotating parallel twin-screw extruder at 190-220 ° C Melting and kneading at a certain temperature, the obtained melt is extruded by a twin-screw extruder, cooled in a water tank, introduced into a pelletizer for pelletizing operation, and the obtained pellets are the high-performance halogen-free flame-retardant PP composition.

Embodiment 2

[0029] Mix 76 parts of PP 1215C, 8 parts of CFA, 8 parts of MEL and 8 parts of APP in a high-speed mixer for 2 minutes by weight, and then add them to the main hopper of the co-rotating parallel twin-screw extruder, at 190-220 ° C Melting and kneading at a certain temperature, the obtained melt is extruded by a twin-screw extruder, cooled in a water tank, introduced into a pelletizer for pelletizing operation, and the obtained pellets are the high-performance halogen-free flame-retardant PP composition.

Embodiment 3

[0031] Mix 79 parts of PP 1215C, 7 parts of CFA, 7 parts of MEL and 7 parts of APP in a high-speed mixer for 2 minutes by weight, and then add them to the main hopper of a co-rotating parallel twin-screw extruder at 190-220 ° C Melting and kneading at a certain temperature, the obtained melt is extruded from a twin-screw extruder, cooled in a water tank, introduced into a pelletizer for pelletizing operation, and the obtained pellets are the high-performance halogen-free flame-retardant PP composition.

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Abstract

The invention relates to a halogen-free flame-resistant polypropylene composition containing triazine expansion flame retardants and preparation of the composition. The halogen-free flame-resistant polypropylene composition is prepared by a method including the steps: weighing 65-90 parts of polypropylene and 15-35 parts of triazine expansion flame retardants according to a formula; mixing the polypropylene and the triazine expansion flame retardants; adding mixture into a double-screw extruder; performing melt mixing, extrusion and granulation at the temperature of 190-220 DEG C to obtain the halogen-free flame-resistant polypropylene composition. Compared with the prior art, the composition has the advantages that the expansion flame retardants are adopted, a triazine derivative serving as a charring agent is used for modifying the polypropylene in a flame-resistant manner, fewer flame retardants are added, and the halogen-free flame-resistant polypropylene composition is good in mechanical property and high in flame-resistant efficiency.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a halogen-free flame-retardant polypropylene composition containing a triazine-based expansion flame retardant and its preparation. Background technique [0002] Polypropylene is a widely used thermoplastic, its limiting oxygen value LOI is only about 18%, it is easy to burn, and there is a droplet phenomenon when burning, its application in many fields is limited, so it needs to be modified by flame retardancy. Halogenated flame retardants have the characteristics of less addition, obvious flame retardant effect and moderate price, but because halogenated flame retardants generate toxic and corrosive smoke when burning, pollute the environment, and do not conform to the current concept of environmental protection. Therefore, the use of halogenated flame retardants is subject to a lot of restrictions. Therefore, the development of environmentally friendly halogen-free flame reta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L79/04C08K3/32C08K5/3492C08K5/134C08K5/526C08K5/372
Inventor 张蔚王铄
Owner 江苏启蓝新材料有限公司
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