GB/T 36214.3-2018

Active

Plastics—Determination of average molecular mass and molecular mass distribution of polymers using size-exclusion chromatography—Part 3:Low-temperature method

塑料 体积排除色谱法测定聚合物的平均分子量和分子量分布 第3部分：低温法

Standard Type
GBT
ICS
83.080.20
CCS
G31
Status
Active
Issue Date
2018-05-14
Implementation
2018-12-01
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 low-temperature size-exclusion chromatography method for determining the average molecular mass and molecular mass distribution of polymers that are soluble only at low temperatures, such as certain polyolefins. It is applied in the plastics industry for quality control, material characterization, and research on polymers that degrade or are unstable at higher temperatures. The method is particularly relevant for testing polyethylene, polypropylene, and other crystalline or sensitive polymers in laboratory and production settings.

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 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 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 19275-2003 Evaluation of the potential biodegradability and disintegration of plastic materials by the action of the specific microorganisms 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.