High tenacity low smoke zero halogen flame retardant polypropylene and preparation method thereof

Abstract

The invention discloses a high tenacity low smoke zero halogen flame retardant polypropylene and a preparation method thereof and the polypropylene comprises the following components according to the parts by weight; 10-90 parts of polypropylene, 10-90 parts of flexibilizer, 100-160 parts of inorganic flame retardant, 2-20 parts of flame-retardant synergist, 2-5 parts of reactive compatibilizer, 0.1-2 parts of antioxidant, 0.5-5 parts of flow modifier, 0.1-5 parts of surface modifier and a defined amount of coloring agent. The low smoke zero halogen flame retardant polypropylene has the advantage of good mechanical properties, good flame resistance (the vertical flame test of the polypropylene passes UL94V-0 level), low smoke density which is not more than 20%, good aging resistance and low cost, and can meet the processing demands for injection and extrusion molding.

Description

Technical field [0001] The invention relates to a low-smoke halogen-free flame-retardant polypropylene with high toughness and a preparation method thereof, and belongs to the technical field of new materials. Background technique [0002] Polypropylene (PP) has the characteristics of low density, good heat resistance, high hardness and excellent processing performance, so it is widely used in various fields, but polypropylene has a low oxygen index, only 17.4, and is easy to burn, and it generates a large amount of heat. A large number of droplets can easily spread the flame. In recent years, fire accidents have occurred frequently, causing huge damage to people's lives and property. The call for flame retardancy of polypropylene and other synthetic resins is becoming stronger and stronger. [0003] There are many varieties of PP flame retardants which can be classified into two categories according to chemical composition: organic flame retardants and inorganic flame retardants...

AI Technical Summary

Problems solved by technology

Its disadvantages are: since the flame retardant system is composed of intumescent flame retardant and coated red phosphorus synergistic flame retardant, the environmental protection performance and smoke suppression performance of the material are poor

But its disadvantages are: the flame retardant used is ammonium polyphosphate, which has poor environmental performance and smoke suppression performance, and the processing performance of EPDM material as the toughening agent is also poor.

The disadvantages are: air bubbles are easy to appear during the processing of intumescent flame retardant products, and the smoke suppression performance is not good

The disadvantage is: similar to the patent document CN 101412830A, application number 200810203878.X), because it is also an intumescent flame retardant, it is easy to cause bubbles in the process of product processing, and the problem of smoke suppression performance cannot be solved

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