【国外标准】 Standard Specification for Reinforced CSM (Chlorosulfonated Polyethylene) Sheet Used in Single-Ply Roof Membrane (Withdrawn 2011)

This specification covers fiber or fabric reinforced non-vulcanized polymeric sheet made from chlorosulfonated polyethylene (CSM) intended for use as a single-ply roof membrane exposed to the weather. In-place roof systems design criteria such as fire resistance, field seaming strength, impact/puncture resistance, material compatibility, and uplift resistance, among others, are beyond the scope of this specification. Backed or reinforced sheets shall conform to the following physical properties: thickness; breaking strength; elongation; tearing strength; low temperature bend; linear dimensional change; ply adhesion; hydrostatic resistance; ozone resistance; and weather resistance. On the other hand, coating portions on the weather side of the sheet containing neither backing nor internal reinforcement shall adhere to the following physical properties: tensile strength; elongation; tear resistance; ozone resistance; and water absorption.1.1 This specification covers reinforced non-vulcanized polymeric sheet made from chlorosulfonated polyethylene (CSM) (see Note 1 ) intended for use as a single-ply roof membrane exposed to the weather. The sheet shall be reinforced with fiber or fabric.Note 1The term CSPE for chlorosulfonated polyethylene is commonly used in the roofing industry.1.1.1 The polymers used in these sheets have thermoplastic characteristics at time of installation. The chlorosulfonated polyethylene will vulcanize in place under ambient conditions.1.2 The tests and property limits used to characterize these sheets are minimum values.1.2.1 In-place roof systems design criteria such as fire resistance, field seaming strength, impact/puncture resistance, material compatibility, and uplift resistance, among others, are factors that must be considered, but are beyond the scope of this specification.1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.4 The following precautionary caveat pertains to the test methods portion only, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.