Novel sandwich-type C@TiO2@C nanostructures were designed as efficient sulfur hosts for advanced lithium–sulfur batteries.

A novel imide modified vinyl-containing fluorosilicone resin (MP-VFS) was firstly prepared from maleopimaric acid (MPA), and characterized by 1 H NMR and 13 C NMR. Containing MPA based imide heterocycle (MPABI), MP-VFS was further used as a novel cross-linker to prepare MPA modified fluorosilicone rubber (MP-FSR). Morphology, mechanical and oil-resistance properties, thermal properties, and low temperature resistance of MP-FSR had been studied. Microphase separation was observed in MP-FSR. Although the tensile strength of fluorosilicone rubber was not significantly enhanced, the tearing strength, breaking elongation, rebound resilience and hardness were effectively improved. When the MP-VFS content was 2.0 wt %, the tearing strength of MP-FSR was increased by 23.5%, breaking elongation by 18.6% and rebound resilience by 9.7%. The thermal stability was enhanced due to the incorporation of MPABI. V C 2015 Wiley Periodicals, Inc. J. Polym.

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As the importance of failure is widely recognized, there is increasing research interest in the antecedents of learning from failure. Basing on affective event theory, the current study cast light on individuals’ cognition of error and proposed that employees with higher levels of error learning orientation tend to show more positive grieving after project failure, which in turn increases their learning from failure. Using a sample of 752 employees from 140 project teams, we found empirical evidence to support this theoretical model. Our results indicated that positive grieving mediated the relationship between error learning orientation and learning from failure. Besides, the relationship between error learning orientation and positive grieving is more positive for employees with lower levels of fear of face loss. Our findings help enrich the antecedents of learning from failure by shedding light on how and when error learning orientation matters. Theoretical and practical implications are discussed.

Imide-containing vinyl fluorosilicone resin (MR-VFS) was synthesized from maleated rosin (MR). And then, with MR-VFS as a new polar cross-linking agent in a heat curable fluorosilicone rubber composition, a series of maleated rosin-modified fluorosilicone rubbers (MR-FSR) were obtained. The effects of MR-VFS on the mechanical properties, oil resistance, thermal stability, and low-temperature performance were studied in detail. It was found that MR-VFS could increase the tearing strength and hightemperature thermal stability of fluorosilicone rubber. When the MR-VFS weight content reached to 2 wt %, the tearing strength of MR-FSR increased by 20.1% compared with that of common fluorosilicone rubber. However, MR-FSR showed a similar lowtemperature resistance and a little worse oil resistance. The morphological study showed that incorporation of maleated rosin could intensify the microphase separation of fluorosilicone rubber.