Title: COMBUSTION BEHAVIOUR AND SYNERGISTIC EFFECT OF ZINC BORATE AND MICROENCAPSULATED RED PHOSPHORUS WITH MAGNESIUM HYDROXIDE IN FLAME-RETARDED POLYPROPYLENE COMPOSITES
Page Range: p.491-496
Author(s): Xiaolang Chen; Jie Yu; Jun Qin; Zhu Luo; Shuchun Hu; Min He
File size: 284K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 19
Issue No: No.6
Abstract
In this paper, the limiting oxygen index (LOI), Underwriters’ Laboratories-94 (UL-94) test, cone calorimeter test (CCT), and thermogravimetric analysis (TGA) were used to study the flame-retardant properties of polypropylene (PP) composites and the synergistic flame-retardant effects of zinc borate (ZB) and/or microencapsulated red phosphorus (MRP) with modified magnesium hydroxide (MH) on PP. The experimental results showed that the addition of ZB and MRP had a great effect on the flammability of the PP composites. The data obtained from the CCT indicated that the heat release rate (HRR), the effective heat of combustion (EHC), and the mass loss of the flame-retarded PP composites decreased markedly with increasing addition of ZB and/or MRP. The data obtained from the TGA curves indicated that the thermal stabilities of PP/MH/ZB and PP/MH/ZB/MRP composites were better than those of PP/MH composites. 28 Refs.
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