Journal of Petrochemical Universities
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Research on the Modified PC/ABS Alloy Materials and Mechanical Performance
SI Chun-lei, BAO Jian-hua, WU Quan-cai
Abstract411)      PDF (1973KB)(514)      
PC/ABS alloy was prepared through melt blending process by using PC,ABS and different kinds of compatibilizing agents. The structure and mechanical properties were characterized by DSC and normal mechanical measurement methods. The results show that PC/ABS belongs to partially-compatible system, the compatibility and mechanical properties could be improved when compatibilizing agents ABS-g-MAH and PE-g-MAH were added to the blending system. The modification effect of ABS-g-MAH is better than that of PE-g-MAH. The reason is that the similar molecular structure of ABS-g-MAH and PC/ABS alloy, at the same time, the interface adhesion could be improved through ester exchange reaction between acid anhydride in ABS-g-MAH and PC.
2008, 21 (2): 45-47.
 
Performance of Environmental Friendly Phosphorous Flame-Retardant Polyester
WU Quan-cai, JIANG Tao, CHEN Xin
Abstract364)      PDF (974KB)(253)      
Structures of environmental friendly phosphorous flame-retardant polyester were characterized through infrared spectra (IR), the performance of its properties such as intrinsic viscosity, differential scanning calorimeter (DSC), oxygen index (OI) and its spinnability was investigated. The results show that the flexible segments in phosphorous flame-retardant monomer were also introduced into the backbone of the polyester macromolecules, which causes the decrease of the phosphorous flame-retardant polyester glass transition temperature (θ g) and melting transition temperature(θ m). The synthesized phosphorous flame-retardant polyester resins have a very good flame retardantability and spinnability; when the mass fraction of phosphorous flame-retardant monomer was 4.5%, the oxygen index of phosphorous flame-retardant polyester reached to 32.8%. The tensile strength and crystallinity decreased owing to the much more space volume of phosphorous flame-retardant polyester. The results indicate that the properties for phosphorous flame-retardant polyester can satisfy the requirements for the manufacture of polyester fibers.
2007, 20 (2): 47-49.