QIAN Yiqing, ZHAO Ping, WANG Weihua. CHARACTERIZATION OF EMULSION POLYMERIC PRODUCT OF ALKYL -NANO-SiO2/MMA AND MODIFYING PC WITH IT[J]. Acta Materiae Compositae Sinica, 2003, 20(1): 79-84.
Citation:
QIAN Yiqing, ZHAO Ping, WANG Weihua. CHARACTERIZATION OF EMULSION POLYMERIC PRODUCT OF ALKYL -NANO-SiO2/MMA AND MODIFYING PC WITH IT[J]. Acta Materiae Compositae Sinica, 2003, 20(1): 79-84.
QIAN Yiqing, ZHAO Ping, WANG Weihua. CHARACTERIZATION OF EMULSION POLYMERIC PRODUCT OF ALKYL -NANO-SiO2/MMA AND MODIFYING PC WITH IT[J]. Acta Materiae Compositae Sinica, 2003, 20(1): 79-84.
Citation:
QIAN Yiqing, ZHAO Ping, WANG Weihua. CHARACTERIZATION OF EMULSION POLYMERIC PRODUCT OF ALKYL -NANO-SiO2/MMA AND MODIFYING PC WITH IT[J]. Acta Materiae Compositae Sinica, 2003, 20(1): 79-84.
Surface of nano-SiO2 particles was covered with PMMA by emulsion polymerization to prevent their reunion. The structures of emulsion polymeric products of alkyl-nano-SiO2/MMA were characterized by TEM and FTIR. The results indicate that the particles of emulsion polymeric products are approximate ball in shape and that the particle consists of centered core(SiO2) and shell (PMMA) and that chemical bonds exist between the core and shell of alkylaed-nano-silica/PMMA. The toughness, process flowability and heat resistance of PC were notably raised by core-shell particles of alkylated-nano-silica/PMMA with the cooperation of a third component.Its toughening mechanism was studied with the newest theory of multi-layer crack extension.
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