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Preparation and properties of piperazine pyrophosphate based flame retardant rigid polyurethane foam
Mengru LIU Fulin HUANG Junjie SUN Xiuyu LIU Qingming ZHU Gang TANG
The Chinese Journal of Process Engineering . 2023, (4): 571 -579 .  DOI: 10.12034/j.issn.1009-606X.222160