Three aromatic diynes with para-, meta-, and ortho-oxyphenyloxy structures and dichlorodimethylsilane were used to prepare the corresponding poly(silane arylether arylacetylene) (PSEA) resins, that is, ppp-PSEA, pmp-PSEA, and pop-PSEA, and effect of the linking positions on the benzene ring on properties of PSEA resins was explored. The results show that pmp-PSEA and pop-PSEA resins exhibit lower crystallinity but better processability as compared with ppp-PSEA resin. For the cured PSEA resins, the density increases but the maximum water uptake decreases with the change in the linking position of the benzene ring from para-position to meta-position followed by ortho-position. Cured pmp-PSEA and pop-PSEA resins possess higher mechanical property in comparison with cured ppp-PSEA resin. The cured pop-PSEA resin shows the highest flexural strength (68.4 MPa) and flexural modulus (2.75 GPa). Furthermore, three cured resins possess excellent heat resistance with the decomposition temperature (T d5 ) of over 505 C.

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