Halogen-free expansion type fire retardant and flame-proof polypropylene material

Abstract

The invention relates to halogen-free expansion-type fire retardant and fire-retarding polypropylene material. The fire retardant is a composite expansion-type fire retardant consisting of melamine salt of bis (melabis) expansion-type fire retardant component, poly ammonium phosphate, triethylolisocyanurate, melamine cyanurate and melamine polyphosphate. Halogen-free expansion-type fire-retarding polypropylene material is made from polypropylene component, antioxidant, char-forming catalyst, phosphate ester coupling agent and the halogen-free expansion-type fire retardant through common milling. The halogen-free expansion-type fire retardant adopts MC or THEIC as one of the gas sources of the fire retardant, and is matched with melabis to substantially increase fire-retarding performance; moreover, the dosage of the halogen-free expansion-type fire retardant is less while ensuring fire-retarding performance, thereby furthest reducing the influence on the physical and mechanical properties of body materials such as polypropylene.

Description

technical field [0001] The invention relates to a halogen-free expansion flame retardant and a halogen-free expansion flame-retardant polypropylene material. Background technique [0002] Polypropylene (PP) is currently one of the resin materials widely used in many industries such as packaging, textiles, building materials, automobiles, electronics, office supplies and daily necessities. Its main disadvantage is that it is flammable, the oxygen index (LOI) is only 17.4-18.5, and a large number of molten droplets are generated during combustion, which is easy to spread the flame, which limits its partial application, so it is extremely important to solve the flame retardant problem of PP. [0003] In the research process of flame-retardant polypropylene materials in the past, halogen-containing flame retardants have been valued and occupied a dominant position because of their low addition amount, obvious flame-retardant effect and moderate price. But in its combustion proc...

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Problems solved by technology

[0005] Although the polypropylene treated by the intumescent flame retardant method reported in the above literature can show low smoke, non-toxicity, good flame retardant effect and certain droplet resistance, there are still problems such as the flame retardant effect is not ideal, and the flame retardant The amount of flame retardant added is relatively large, and the added intumescent flame retardant component has problems such as hygroscopicity

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