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- W2370296465 abstract "Hydrophobic nano-SiO2 particles were prepared through the reaction of coupling agent KH-550 with nano SiO2 particles under the action of ultrasound,and subsequently dispersed in polyurethane solution modified by castor oil(CO).The performance of polyurethane was characterized by means of fourier transform infrared(FTIR) spectroscopy,thermal gravimetric analysis(TGA) and scanning electron microscopy(SEM).The FTIR analysis indicates the formation of chemical bond between PU and nano-SiO2,thus forming the Si—O—Si particle structure.When castor oil dosage was 10% of the total amount of polyol,the tensile strength of the film increased from 6.8 MPa to 16.2 MPa,and the water absorption also decreased by more than two times.When the mass fraction of nano-SiO2 increased from 0% to 2%,the highest point temperature of mass loss rate of PU film increased from 345 ℃ to 369 ℃,with an incidental increase of thermal decomposition temperature.TGA curves of the coating manifested a shift to the right." @default.
- W2370296465 created "2016-06-24" @default.
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- W2370296465 date "2012-01-01" @default.
- W2370296465 modified "2023-09-26" @default.
- W2370296465 title "Synthesis and Characterization of Alcohol-soluble Polyurethane Modified by Castor Oil and Nano-SiO_2" @default.
- W2370296465 hasPublicationYear "2012" @default.
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