INVESTIGATION OF BLENDING MODIFIED POLY (SILYLENE-ARYLACETYLENE) WITH DIFFERENT GROUPS

Abstract

Abstract: Poly(silylene-arylacetylene) (PSA) resin is a new high-temperature resin. The cured resin exhibits excellent mechanical properties and good wave transmission properties. PSA resin usually prepared by Grignard reagent, and the resin (PSA-G) is brittle because of the high crosslink density after being cured. PSA prepared by catalyst zinc is a new method with high efficiency. PSA prepared by zinc (PSA-Zn) is a kind of PSA resin with terminal olefinic bond. PSA-Zn has low viscosity and the flexural properties of the cured resin are better than PAS-G while the thermal property is a little lower than PSA-G. In this paper, PSA-G was used to blend with PSA-Zn to obtain a modified resin. The curing process, the viscosity and the heat resistance of the modified resin was studied. Quartz fiber reinforced composite and casting of the modified resin (PSA-Zn′s content is 70 wt%) were prepared and the mechanical properties of the composite and the casting were tested. The results show that the modified resin (PSA-Zn′s content is 70 wt%) kept a low viscosity, the T_d5 (temperature that the weight decreases 5%) of the resin reached to 564 ℃, the composite has good mechanical properties and the flexural strength of the casting increased by 11% relative to PSA-G.

Key words: poly(silylene-arylacetylene), blending modification, high-temperature resistance, composite

CLC Number:

TB332

JIANG Xiao-jie, DENG Shi-feng, DU Lei. INVESTIGATION OF BLENDING MODIFIED POLY (SILYLENE-ARYLACETYLENE) WITH DIFFERENT GROUPS[J]. Fiber Reinforced Plastics/Composites, 2016, 0(7): 63-68.

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