GB/T 24282-2021

Active

Plastics—Determination of xylene-soluble matter fraction in polypropylene

塑料 聚丙烯中二甲苯可溶物含量的测定

Standard Type
GBT
ICS
83.080.01
CCS
G31
Status
Active
Issue Date
2021-12-31
Implementation
2022-07-01
Centralized Committee
中国石油和化学工业联合会
Issuing Authority
国家市场监督管理总局、中国国家标准化管理委员会

Application Summary AI generated

This standard specifies a gravimetric method for determining the fraction of polypropylene that dissolves in xylene at a controlled temperature, which is used to quantify the amorphous and low-molecular-weight polymer content. It is applied in the quality control and material characterization of polypropylene resins and products, particularly in the plastics industry for assessing material consistency, processing behavior, and mechanical properties. The method is relevant for manufacturers, testing laboratories, and procurement professionals evaluating polypropylene grades for applications such as packaging, automotive components, and consumer goods.

Related Standards

GB/T 7141-2008 Plastics—Methods of heat aging GB/T 9350-2003 Plastics--Homopolymer andcopolymer resins of vinyl chloride--Determination of pH of aqueous extract GB/T 19275-2003 Evaluation of the potential biodegradability and disintegration of plastic materials by the action of the specific microorganisms GB/T 19276.2-2003 Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium--Method by analysis of evolved carbon dioxide GB/T 19276.1-2003 Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium--Method by measuring the oxygen demand in a closed respirometer GB/T 12004.4-2003 Polyvinyl chloride paste--Determination of apparent viscosity by the Brookfield test method GB/T 12000-2003 Determination of the effects of exposure to damp heat，water spray and salt mist for plastics GB/T 17931-2003 Poly(ethylene terephthalate)(PET)resin for bottles
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.