Abstract:A silicon-containing arylacetylene resin( PSA) was modified by blending bis(3-acetylenephenyl)
dimethylsilazane(SZ) synthesized by an aminolysis procedure. A series of test methods were used to investigate the
rheological behavior, curing reaction,thermal stability,flexural and dielectric properties of PSA/ SZ. The mechanical
properties of quartz fiber reinforced composites were also measured. The results show that with the increase of SZ, the
viscosities of PSA/ SZ resins decrease remarkably, the flexural strength of PSA/ SZ resin increases by 62. 7%, the
flexural strength and interlaminar shear strength of quartz fiber reinforced PSA/ SZ resin composite increase by 18. 7%
and 60. 4%, respectively.
