Multicomponent flame-retardant polypropylene material and preparation method thereof

Abstract

The invention discloses a multicomponent flame-retardant polypropylene material and a preparation method thereof. The multicomponent flame-retardant polypropylene material comprises the following components in parts by weight: 70-80 parts of polypropylene, 10-30 parts of ammonium polyphosphate, 5-30 parts of aluminum hypophosphite, 5-30 parts of melamine cyanurate, 0.5-3 parts of a compatilizer, 0.5-3 parts of a coupling agent and 1-3 parts of an antioxidant. According to the invention, the polypropylene material has excellent flame retardant performance by optimizing the proportion among themulti-component flame retardants, and the mechanical property of the polypropylene material can be well maintained. In addition, processing difficulty is low, the application range is wide, and the production process is environmentally friendly and pollution free.

Description

technical field [0001] The invention relates to the technical field of polypropylene material production, in particular to a multi-component flame-retardant polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a widely used thermoplastic, which has the advantages of high crystallinity, regular structure, good heat resistance, etc., and is widely used in various fields in daily life. However, the limiting oxygen index of pure polypropylene resin is extremely low, only 18%, and a large number of molten droplets will be generated during the combustion process, which will cause the fire to continue to expand and lead to serious fire accidents. [0003] In view of the flammability of polypropylene materials, flame retardant modification of polypropylene is required. At present, there are many types of polypropylene flame retardants, mainly divided into halogen flame retardants and halogen-free flame retardants. Among them, ...

AI Technical Summary

Problems solved by technology

As one of the commonly used halogen-free flame retardants, ammonium polyphosphate does not produce corrosive gas during the decomposition process, has low hygroscopicity and high thermal stability, and is a halogen-free flame retardant with excellent performance; aluminum hypophosphite is a High-efficiency inorganic phosphorus-containing flame retardant, with a phosphorus content of up to 41.9%, has high flame-retardant efficiency, excellent thermal stability and hydrolytic stability, and is not easy to cause polymer decomposition during processing. It can be added alone , and can also be compounded with other flame retardants. It is a widely used flame retardant. The disadvantage is that the price is relatively high and the application cost is high; melamine cyanurate is a nitrogen-based halogen-free flame retardant. Odorless and tasteless, with high decomposition temperature, it is an ideal flame retardant synergist in industrial production

Usually, when a single flame retardant is added to polypropylene, the flame retardant effect is often poor, so the compounding of multiple flame retardants in an appropriate ratio is an effective means for flame retardant polypropylene at present.

Images