Elastomer-coated inorganic particle-filled modified PET material with flame retardation and antistatic properties

Abstract

The invention discloses an elastomer-coated inorganic particle-filled modified PET material with flame retardation and antistatic properties. The elastomer-coated inorganic particle-filled modified PET material comprises, by mass, 50-80% of PET, 8-15% of calcium carbonate particles, 0.5-2% of diisocyanate, 1-4% of dihydric alcohol, 10-18% of a fire retardant, 3-8% of a maleic anhydride graft polymer, 5-15% of antistatic master batch, 0.5-2% of a nucleating agent and 0.1-1% of an anti-oxidant. Diisocyanate and dihydric alcohol are stirred in a mixer and undergo an addition polymerization reaction to produce a polyurethane elastomer and the polyurethane elastomer coats a calcium carbonate particle so that a core-shell structure with the calcium carbonate particle as a core and the elastomer as a shell is formed and has good toughening synergism on PET. The elastomer-coated inorganic particle-filled modified PET material realizes PET flame retardation modification on the premise of no halogen, low smoke, no toxicity and environmental friendliness, can realize PBT antistatic modification, realizes product surface resistivity of 10<8> to 10<10> omega. cm, and has lasting and excellent antistatic performances.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an elastomer-coated inorganic particle-filled PET material with flame-retardant and antistatic modification. Background technique [0002] Polyethylene terephthalate (PET) has the characteristics of high strength, good wear resistance, good resilience and low cost, so it occupies a considerable proportion in textiles. At the same time, PET is an engineering project with excellent performance and wide application. plastic. However, the mechanical properties, heat resistance and impact properties of pure PET materials are poor, and the crystallization rate is slow, molding processing is difficult, the flame retardancy is poor, and the antistatic effect is not good. Under the conditions of 65% relative humidity and 25 °C, The moisture absorption rate is only 0.4%, and the resistivity is as high as 10 14 Ω·cm, it is very easy to generate static electricity; the limiting o...

AI Technical Summary

Problems solved by technology

However, the mechanical properties, heat resistance and impact properties of pure PET materials are poor, and the crystallization rate is slow, molding processing is difficult, the flame retardancy is poor, and the antistatic effect is not good. Under the conditions of 65% relative humidity and 25 °C, The moisture absorption rate is only 0.4%, and the resistivity is as high as 10 14 Ω·cm, it is very easy to generate static electricity; the limiting oxygen index of PET material is only about 22%, which is easy to burn and cannot meet the requirements for flame retardancy in some fields