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首页> 外文会议>10th International Conference on Additives 2001: Plastics for the New Millennium, 10th, Mar 18-21, 2001, Hilton Head Island, South Carolina >Influence of Molybdates on Char Formation and Smoke Suppression in PVC
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Influence of Molybdates on Char Formation and Smoke Suppression in PVC

机译：钼酸盐对聚氯乙烯中焦炭形成和烟雾抑制的影响

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摘要

In recent years, the use of flexible PVC for plenum cable jackets has grown markedly. In order to meet the smoke requirement of UL910, molybdate smoke suppressants are commonly added to plenum jacket compound. It has long been recognized that molybdates act in the condensed phase by promoting the formation of protective char. In this work we examine the influence of common molybdate additives (Kemgard 911C, AOM) on char formation in a number of PVC compounds. Various analytical methods were used to study the composition and structure of PVC char. It is seen that in addition to influencing the organic char layer, molybdates can influence the fate of other inorganic FR additives in char. Using TGA and DSC, we have also studied the interaction of smoke suppressants with FR plasticizers. Analytical and thermogravimetric results are discussed in context of apparent FR synergies seen in NBS smoke and cone calorimeter tests.
机译：近年来，在充气电缆护套中使用柔性PVC的趋势显着增加。为了满足UL910的烟雾要求，通常将钼酸盐抑烟剂添加到充气套复合物中。长期以来人们就认识到，钼酸盐通过促进保护性炭的形成而在缩合相中起作用。在这项工作中，我们研究了常见的钼酸盐添加剂（Kemgard 911C，AOM）对许多PVC化合物中焦炭形成的影响。各种分析方法被用来研究PVC炭的组成和结构。可以看出，除了影响有机碳层外，钼酸盐还可以影响碳中其他无机FR添加剂的命运。使用TGA和DSC，我们还研究了抑烟剂与FR增塑剂的相互作用。分析和热重分析结果是在NBS烟气和锥形量热仪测试中看到的明显的FR协同作用下讨论的。

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