High Performance Miscible Polyetherimide/Bismaleimide Resins with Simultaneously Improved Integrated Properties Based on a Novel Hyperbranched Polysiloxane Having a High Degree of Branching

Abstract

Amino-terminated hyperbranched polysiloxane (AHBSi) with high degree of branching (= 0.8) was synthesized by a control hydrolysis of γ-aminopropyl triethoxysilane (APTES) without using any catalyst. Besides, AHBSi was used as the compatibilizer of the miscible polyetherimide (PEI)/bismaleimide (BD) blend, and the influence of the content of AHBSi on the compatibility and integrated performance of the PEI/BD blend was systematically investigated. The corresponding investigation of the APTES/PEI/BD system was also carried out for comparison. Results show that although AHBSi and APTES have similar chemical segments, their different topological structures endow them with completely different effects. AHBSi can remarkably improve the compatibility between PEI and BD resin, and the AHBSi/PEI/BD system not only has obviously improved toughness and decreased brittleness while maintaining good stiffness. It also exhibits decreased dielectric constant and loss. Conversely, the APTES/PEI/BD system has greatly deteriorated compatibility and integrated performance. These interesting results demonstrate that AHBSi is a super multifunctional compatibilizer.

Unique liquid multi-maleimide terminated branched polysiloxane and its flame retarding bismaleimide resin with outstanding thermal and mechanical properties

“…This increase is higher than those of hyperbranched polysiloxane modified BMI or cyanate ester resins reported [28,[32][33][34].…”

Flame Retardancy and Mechanism of Bismaleimide Resins Based on a Unique Inorganic–Organic Hybridized Intumescent Flame Retardant

“…About 10.0 mg of the sample was put in an alumina crucible and heated from Limited oxygen index (OI) values were measured on a Stanton Redcrat Flame Meter (England) according to ASTM D2863-2009; at least five samples for each formulation were tested. The dimensions of each sample were (100 ± 0.02) × (6.5 ± 0.02) × (3 ± 0.02) mm 3 .…”

Preparation and characterization of a novel composite of polythioetherimide/bismaleimide/2,2′-diallylbisphenol A

“…Similar phenomena have also been reported in other systems. 1,3 Note that the physical interaction between PTEI and BMI/BA resin is enhanced with an increase in the amount of PTEI. Two influences obviously lead to the phenomena shown in Figures 5 and 6.…”

“…1 Given the rapid development of aviation and aerospace technology, such materials have attracted the attention of both scientists and engineers and have seen an increased demand in the aviation and aerospace industries.…”