Synthesis and characterization of silicon-containing arylacetylene ether of bisphenol a resins and their composites

Abstract

Two novel resins, silicon-containing arylacetylene ether of bisphenol A (PSAP-A) and 1, 3-diethynylbenzene-terminatedsilicon-containing arylacetylene ether of bisphenol A (DPSAP-A), were synthesized from dipropargyl ether of bisphenol A (BADPE) and dimethyldichlorosilane through Grignard reaction. The structures of the resins were characterized by protonnuclearmagnetic resonance(1H-NMR), and thermal properties was explored by thermogravimetric analysis(TGA)and dynamic thermo-mechanical analysis (DMA). In addition, T300 carbon fiber(T300CF) reinforced PSAP-A composite (T300CF/PSAP-A)and T300 carbon fiber reinforced DPSAP-A composite (T300CF/DPSAP-A) were prepared by a solution-impregnation process using tetrahydrofuran as solvent. The results showed that the cured PSAP-A resin and DPSAP-A resin displayed good heat resistance and processing properties. Degradation temperatures of the cured PSPA-A resin and DPSAP-A resin at 5% weight loss (Td5) were 421.5°C and 486.3°C, respectively. The flexural strengths of T300CF/PSAP-A and T300CF/PSAP-Acomposites reached 458.2 MPa and 287.6 MPa, respectively.