Bio-based intumescent flame retardant and synthesis method thereof

The invention relates to the technical field of flame retardants, in particular to a bio-based intumescent flame retardant and a synthesis method thereof. The invention relates to a bio-based intumescent flame retardant, which is characterized in that the structural formula of the bio-based intumescent flame retardant is # imgabs0 #, in which R1 is one of-H,-CH3,-OCH3,-CH2CH3 and-OCH2CH3; r < 2 + > is one of-NH (CH2) 6NH < 3 + >,-NH (CH2) 2NH < 3 + >,-NHCH2 (NHCH2) NH < 3 + >,-NHCH2 (NHCH2) NH < 3 + >,-NHCH2 (NHCH2) NH < 3 + >, # imgabs 1 # and # imgabs 2 #; and m is an integer of 2-6. The rigid bio-based intumescent flame retardant which is excellent in flame retardant property, strong in hydrophobicity and good in compatibility with a matrix is constructed. In the synthesis process, raw materials are easy to obtain, the treatment process is simple, and operation is easy. 本发明涉及阻燃剂技术领域，具体涉及一种基于生物基的膨胀型阻燃剂及其合成方法。一种基于生物基的膨胀型阻燃剂，其特征在于，结构式为：#imgabs0#其中，R1为-H，-CH3，-OCH3，-CH2CH3和-OCH2CH3中的一种；R2+为-NH(CH2)6NH3+，-NH(CH