Changbo Zhang , Rongke You , Hongyang Cheng, Yongfang Jiang, Xue-Qing Zhan, Ning Ma, Fang-Chang Tsai
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Flame retardant and smoke inhibition properties of microencapsulated ammonium polyphosphate on polyvinyl chloride
In this study, a network compound (HP-DP) was produced by polymerization of phosphonitrilic chloride trimer (HCCP) and p-phenylenediamine (PPD), and microencapsulated ammonium polyphosphate (APP) to create flame-retardant APP@HP-DP, which was then incorporated into polyvinyl chloride (PVC) to prepare PVC composites. Adding APP@HP-DP flame retardant to PVC composites enhanced carbon yield, thermal stability and increased LOI of the composites from 23.1 % to 28.6 %. With 9.5 wt% APP@HP-DP, the peak heat release rate (PHRR) and peak smoke production rate (PSPR) dropped by 47.2 % and 23.2 %, respectively, compared to the original PVC composite. Mechanical property tests showed no change in tensile strength or elongation at the break for PVC composites with APP@HP-DP addition. Therefore, the addition of APP@HP-DP to PVC composites has significantly improved its flame retardancy and smoke suppression without affecting its mechanical properties, which can effectively reduce the potential danger of fire.
期刊介绍:
Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings.
As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.