An effective modification of bismaleimide resin with PES/PEK

The introduction of the full papar reviews some relevant matters and then proposes the modification mentioned in the title, which we believe improves bismaleimide resin and which is explained in section 1. Its core consists of: "The modified resin system of N, N'-4, 4'-diphenylmethanebismaleimide (BMI)/o, o'-diallylbisphenol (DBA)/Polyether sulphone (PES)/Polyether ketone (PEK) was prepared by melting prepolymerization. The curing reactive, mechanical properties and thermal stability were also investigated. The performances of the PES/PEK toughening resin system under different proportions were contrasted. " The results, presented in Figs. 1 through 4 and Tables 1 and 2, and their analysis show preliminarily that both the toughness and the strength of the resin could obviously increase by adding PEK/PES. The 5% PEK/PES addition could make the modified resin system's impact strength increase by 68.5% and its bending strength increased by 50.8%. In addition, the thermal stability of the modified resin system improves more than either that of the pure system or that of a single thermoplastically modified system. The effect of modification with PES/PEK was more effective than either with PES or PEK individually.