Polyolefin elastomer and application thereof in photovoltaic packaging film

Abstract

Provided are a polyolefin elastomer for photovoltaic packaging films and a composition thereof, a preparation method therefor and an application thereof. The polyolefin elastomer is an atactic polymer or a block polymer composed of ethylene and α-olefin, and the polyolefin elastomer has a molecular mass Mw of 30000-200000, PDI of 1.5-3, MFR measured of 1-50 g/10 min at a temperature of 190° C. and a load of 2.16 kg, a density of 0.85-0.95 g/cm3, and a monomer insertion rate of 10-65 wt %, and in the temperature rising elution process of TGIC-trichlorobenzene, the polyolefin resin has a soluble substances content of 0.1%-20% at a temperature of less than or equal to 40° C. Photovoltaic encapsulation films used a composition prepared by the elastomer have better optical performance, electrical insulation performance and anti-PID performance.

Dependencies are inferred from the claim text.