GB/T 20022-2005 《Plastics -- Homopolymer and Copolymer resins of vinyl chloride Determination of apparent density》 Related products

GB/T 20022-2005 specifies the determination method of Resin apparent density (pb) for homopolymerization and copolymerization of plastic vinyl chloride. The standard specifies the test principle, specifies the preparation requirements for instruments and equipment, and explains the determination steps in detail, covering the operation procedures such as free flow method and vibration funnel method, and gives the result calculation and precision regulations. It provides a unified technical standard for the accurate determination of this type of Resin apparent density (pb), and helps product quality control and performance evaluation.