Home / Standards / GB/T 23442-2009 GB/T 23442-2009 Active Determination of structure and morphology for the precursors of polyacrylonitrile-based carbon fibers 聚丙烯腈基碳纤维原丝结构和形态的测定 Standard Type GBT ICS 83.120 CCS Q23 Status 现行 Issue Date 2009-03-25 Implementation 2010-01-01 Responsible Dept 国家标准委 Drafting Unit N/A