Recent advances in the use of zinc borates in flame retardancy of EVA
Recent advances in the use of zinc borates in flame retardancy of EVA
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DOI：
10.1016/s0141-3910(98)00130-x
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发表时间：
1999-01-01
影响因子：
5.9
通讯作者：
Schubert, D
中科院分区：
文献类型：
--
作者：
Bourbigot, S;Le Bras, M;Schubert, D
在这项工作中，硼酸锌被用作EVA-ATH和EVA-Mg（OH）（2）阻燃剂（FR）配方中的协同剂和烟雾抑制剂。此外，在配方EVA-ATH和EVA-ATH/硼酸锌的锥形量热仪实验期间，通过固态NMR对在不同时间取样的残留物进行研究，从而提出FR体系的作用机制。结果表明，在聚合物的加热过程中，氢氧化铝（ATH）分解为Al 2 O 3，导致点火时间增加。此外，在聚合物的燃烧过程中由ATH原位形成Al 2 O3是第一个事件。同时，硼酸锌降解，并提出产生玻璃质保护涂层，其产生更有效的炭。(C)1999 Elsevier Science Ltd.保留所有权利。
In this work, zinc berates are used as synergistic agents in EVA-ATH and EVA-Mg(OH)(2) flame-retardant (FR) formulations and as smoke suppressants. Moreover, the study by solid state NMR of the residues sampled at different times during cone calorimeter experiments of the formulations EVA-ATH and EVA-ATH/Zinc berate allows to propose a mechanism of action of the FR systems. it is demonstrated that the decomposition of Aluminium trihydroxide (ATH) to Al2O3 during the heating of the polymer results in an increase of the ignition time. Moreover the formation of Al2O3 in situ from ATH during the combustion of the polymer is the first event. Concurrently zinc berate degrades and it is proposed that a vitreous protective coating is created, which yields a more efficient char. (C) 1999 Elsevier Science Ltd. All rights reserved.