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Study on the Mechanical and Aging Performances of Rubber Matrix Nanocomposites

Author: ZhuangTao
Tutor: ZhouLiLing
School: Qingdao University of Science and Technology
Course: Polymer Chemistry and Physics
Keywords: Rubber Nano-ZnO Nano-CaCO3 Mechanical Properties Thermal-oxidative aging UV aging
CLC: TQ330.14
Type: Master's thesis
Year: 2006
Downloads: 335
Quote: 3
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Abstract


Inorganic nano-fillers in the rubber matrix composites have a unique modification effect and broad application prospects. This article was prepared by mechanical blending nano ZnO / NR, nano, ZnO / SBR the nano the CaCO 3 / NR and nano CaCO , 3 / SBR four composite. Of nano-ZnO and nano CaCO , 3 different dosage is used as a filler for rubber processing performance, curing properties, mechanical properties, heat-resistant oxygen aging resistance, resistance to UV aging properties, and ordinary filler for comparison. Experiment was observed by scanning electron microscopy (SEM) dispersion of nano-fillers in rubber; nano-fillers rubber processing performance and dynamic viscoelastic properties investigated by rubber process analyzer (RPA); thermal gravimetric analyzer and stress relaxation experimental study nano-filler to improve rubber heat-resistant mechanism of oxidative aging and resistance to ultraviolet aging properties. Experimental results show that: the surface treatment of nano ZnO and nano of CaCO 3 in NR and SBR can be uniformly dispersed, the particle diameter of about 100nm. Nano-ZnO and nano-CaCO 3 adding improved heat aging properties of the composites. 100 ℃ × 48 hours of aging, nano ZnO / NR nano-ZnO / SBR composite tensile properties retention rate was 90.64% and 86.7%, respectively, 10% and 15% respectively, compared with ordinary ZnO; nano-CaCO 3 < / sub> / NR tensile properties of composite materials to maintain the rate of 87.4%, 8% higher than the ordinary the CaCO 3 ; nano CaCO 3 / SBR composite tensile properties retention rate CaCO 3 is basically the same: and the protective effect increased with the increase in the amount of nano-fillers. Nano-ZnO is added to improve the resistance of composite ultraviolet aging properties, UV wavelength of 275 to 360 nm at 40 ℃ (150W) 72 hours after irradiation, nano ZnO / NR nano-ZnO / SBR retention of tensile properties of composite materials 96.8% and 55.3%, respectively, higher than the regular ZnO 9.2% and 12%, respectively; nano CaCO 3 / NR composite tensile properties retention rate was 81.7%, more than common CaCO 3 < an increase of 9.5%; / sub> with nano-fillers increased use of UV protective effect increased. Nano CaCO 3 the only NR play a UV protective effect, almost no protective effect in the SBR. Nano-ZnO and nano CaCO , 3 have a reinforcing effect on the tear strength of the composites increased about

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CLC: > Industrial Technology > Chemical Industry > Rubber Industry > General issues > Basic theory > Aging theory
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