Time filter

Source Type

Xu J.,Nanjing University of Posts and Telecommunications | Xu J.,Nanjing University of Science and Technology | Feng X.,Nanjing University of Posts and Telecommunications | Yang F.-G.,Shanghai Kumho Sunny Plastics Co. | And 2 more authors.
Tien Tzu Hsueh Pao/Acta Electronica Sinica | Year: 2015

In the mobile sink based sensor networks, the energy consumption issue becomes the key point because of energy constraint on sensor nodes. We established a maximizing minimum probability of energy consumption model, and gave a strong mathematical proof. We also proposed a maximizing minimum probability of energy consumption (MMPEC) data collection algorithm based on this model. MMPEC optimize the length of path distributed between child nodes and the aggregation nodes, and achieves low energy consumption of the whole network. The simulation results show that MMPEC is far superior to other hierarchical data collection methods based on a mobile sink in energy consumption. © 2015, Chinese Institute of Electronics. All right reserved.

Gu X.,Qiqihar University | Song X.,Qiqihar University | Shao C.,Shanghai Kumho Sunny Plastics Co. | Zeng P.,Qiqihar University | And 3 more authors.
International Journal of Electrochemical Science | Year: 2014

The aim of this work was to learn the solvent effect on preparation of poly(butylenes-carbonate)(PBC) electrospinning nanofiber filmes. For this purpose, the dissolvability and electro-spinnability of PBC in seventeen pure solvents and two blend solvents, together with morphology of the result PBC nanofiber films were investigated in detail. Results revealed that the solvent dielectric constant had a strong influence on the split process, and that affected the morphology of as-spun PBC nanofibers. Compared with poly(ε-caprolactone) (PCL) nanofibers, PBC nanofiber films appeared better hydrophilic performance, and enhanced mechanical property which can be attributed to its low crystallization speed. © 2014 The Authors.

A copier/printer exterior part uses a halogen-free flame-retardant resin composition. The halogen-free flame-retardant resin composition includes 5 wt % to 50 wt % of unused polycarbonate, 20 wt % to 63 wt % of recycled polycarbonate 5 wt % to 35 wt % of recycled polyethylene terephthalate, 0.2 wt % to 2 wt % of a styrene-acrylonitrile-glycidyl methacrylate terpolymer, 5 wt % to 15 wt % of a toughener, 10 wt % to 20 wt % of a flame retardant, 0.1 wt % to 0.8 wt % of a flame-retardant antidrip agent, 0.1 wt % to 1 wt % of an antioxidant, and 0.1 wt % to 2 wt % of a lubricant. The styrene-acrylonitrile-glycidyl methacrylate terpolymer includes 1 wt % to 5 wt % of glycidyl methacrylate and 20 wt % to 33 wt % of acrylonitrile.

Zhou T.,Shanghai Kumho Sunny Plastics Co. | Tang Y.-H.,Shanghai Kumho Sunny Plastics Co. | Tian Y.,Shanghai Kumho Sunny Plastics Co. | Li R.-Q.,Shanghai Kumho Sunny Plastics Co.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2010

Microencapsulized red phosphorus and phosphorus flame retardants named RC200 were employed to prepare fire retardant high-performance ABS composites which were toughened by different impact modifiers via twin-screw extrusion. An addition of 10phr ethylene-methyl acrylate copolymer(EMA) elastomer was proved to toughen flame retardant ABS composite efficiently. And furthermore, the flame retardant ABS composite exhibited excellent physical properties including favorable melt fluidity, better impact strength of 78 J/m and V-0 class for UL94 rating testing. Compared to thermoplastic polyurethane(TPU) containing soft component (polyether), TPU comprised hard ingredient (polyester) indicated more significant flame retardancy. Combustion and limiting oxygen index(LOI) testing reveal that nano-montmorillonite(MMT) shows a remarkable synergistic effects on flame-retardance enhancement of ABS. Thermogravimetric analysis demonstrates that adding MMT leads to greatly improved thermal stability and much larger residual quantity.

Shan G.,Shanghai Kumho Sunny Plastics Co. | Zhou T.,Shanghai Kumho Sunny Plastics Co. | Luo M.,Shanghai Kumho Sunny Plastics Co. | Xin M.,Shanghai Kumho Sunny Plastics Co.
Annual Technical Conference - ANTEC, Conference Proceedings | Year: 2013

The effect of the blending sequence and the viscosity ratio on the phase morphology and mechanical properties of blends of polypropylene and polyphenylene ether was investigated in present study. It is found that that the Izod impact strength of PPE/PP alloy compounded via two step extrusion method can be improved significantly. A preblending SEBS with PPE can make the compatibilizer SEBS move easily to the PPE/PP interface and the blends had finer dispersion and better properties. Also, the experimental results have showed a clear dependence of the blend phase morphology and properties on the viscosity ratio. The Izod impact strength of PPE/PP blend can be improved by decreaseing the viscosity ratio ηPPE/ηPP. In addition, the screw configuration containing an elongational flow field has proved to be more effective in deforming particles than a shear flow field, leading to finer dispersion and better properties.

Discover hidden collaborations