Transparent flame-retardant sheet having high chlorine content and polyvinyl chloride composition thereof

Abstract

A transparent flame-retardant sheet having a high chlorine content is provided. The transparent flame-retardant sheet is made of a polyvinyl chloride composition that includes 100 parts by weight of a polyvinyl chloride raw material component, 0.1 to 1 parts by weight of at least one carbon forming agent, and 2 to 5 parts by weight of at least one heat stabilizer. The polyvinyl chloride raw material component includes a polyvinyl chloride raw material and a chlorinated polyvinyl chloride raw material in a content ratio of 1:1.22 to 1:4. Therefore, the transparent flame-retardant sheet has a fire propagation index (FPI) of less than 6 and a smoke damage index (SDI) of less than 0.4 according to the FM4910 standard under the condition of having a thickness of 5 mm.

Dependencies are inferred from the claim text.