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Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO)-based compounds containing resorcinol bis(diphenyl phosphate) (RDP) and poly(dimethyl-diphenyl siloxane) (PDMDPS) were prepared through melt extrusion, and their flammability characteristics and mechanical properties were evaluated. The incorporation of RDP enhanced the flame retardancy of PPO compounds, but hardly made them obtain the UL 94 V-0 rating unless RDP and PDMDPS were combined. Studies on the residual chars after vertical burning test suggested that the excellent flame retardancy be correlated with the retention from the combination effects of silica and phosphate in the char, whose cross-linked silica enhanced the formation of a compact char to retard combustion. Thermogravimetric analysis indicated that the presence of PDMDPS and RDP improved the char yielding as well as the decomposition temperature of PPO compounds. Moreover, the Izod impact strength was improved significantly in the presence of RDP and PDMDPS, and this toughening effect was attributed to the deformation and multiple cracks induced by PDMDPS, which enhances the impact energy absorption of the matrix. This work provides a very effective flame retarding formulation for PPO compounds with improved impact toughness. POLYM. ENG. SCI., 52:927-936,

Body shape research is an interdisciplinary comprehensive subject Five colleges and universities of Xinjiang Bortala Mongolian Autonomous Prefecture, Bayinger Mongolian Autonomous Prefecture and Urumqi were selected as the body shape test observation points. The artificial intelligence detection of body shape indicators was carried out for Mongolian college students of the 17th, 18th, 19th and 20th years of age. From this, 368 effective card tests for 17-20 year old Mongolian young students were obtained. Through the sorting and statistical analysis, the conclusions and suggestions for the control intervention of the Mongolian students' body shape were obtained. Research Purposes Known as the "child of the grassland", the Mongolian people have lived a nomadic life of "migrating by water and grass" for thousands of years. Most grasslands in China have left the footprints of Mongolian herders. The Mongolian people have a very long history of living in Xinjiang and have a great influence on the social, cultural and economic development of Xinjiang. The research group focused on the artificial intelligence survey, statistical analysis and comparative study on the data of the body shape of Mongolian young students, and found out the age characteristics, national characteristics, advantages and gaps of the development of Mongolian students' body shape. Strengthen and control the specific conclusions and recommendations of the Mongolian school sports work. It provides a reference for improving the health care work and physical education work of Mongolian schools; provides a basis for the selection of Mongolian athletes; and provides a quantitative basis for the education authorities to conduct sports management and decision-making in minority schools. Research Object Content and Method Research Objects 400 Mongolian young students aged 17-20 years old from five colleges and universities in Xinjiang Bortala Mongolian Autonomous Prefecture, Bayinger Mongolian Autonomous Prefecture and Urumqi City were tested. Get 368 valid cards from it. It is divided into three age groups: 17 years old, 18 years old, and 19-20 years old. Research ContentMorphological Indicators. mainly six indicators such as height, weight, chest circumference, systolic blood pressure, diastolic blood pressure and vital capacity.