التفاصيل البيبلوغرافية
| العنوان: |
羟基锡酸钴在软质聚氯乙烯中的高效 阻燃消烟作用. (Chinese) |
| العنوان البديل: |
High efficient flame retardancy and smoke suppression effect of cobalt hydroxystannate on flexible polyvinyl chloride. (English) |
| المؤلفون: |
胡伟东, 赵贺, 焦运红, 吴静 |
| المصدر: |
Acta Materiae Compositae Sinica; Sep2019, Vol. 36 Issue 9, p2067-2075, 9p |
| مصطلحات موضوعية: |
HEAT release rates, POLYVINYL chloride, FIREPROOFING agents, TENSILE tests, FLAME, COMBUSTION, FLAMMABILITY |
| الملخص (بالإنجليزية): |
Submicrometer-sized cobalt hydroxystannate (CHS) flame retardant was prepared via coprecipitation method and applied to flexible polyvinyl chloride (PVC) to obtained CHS/PVC composites. The flame retardancy, thermal stability and mechanical properties of CHS/PVC composites were investigated by limiting oxygen index (LOI), cone calorimeter, TG analysis and universal tensile tests. The results show that the CHS effectively enhances the flame retardancy and maintains the mechanical property of CHS/PVC composites. Compared with blank PVC, when the mass ratio of CHS to PVC is 10%, the LOI of CHS/PVC composite is increased by 2.3%, the peaks of heat release rate and smoke production rate are reduced by 39.6% and 57.4%, respectively. The enhancement for CHS/PVC composites in flame retardation mainly attributes to the water dehydration from CHS when heating which dilutes heat. On the other hand, the CoCl2 generated during the combustion process can effectively catalyze the early decomposition of PVC and then a denser and continuous residual charlayer is formed, thereby the combustion of PVC is effectively suppress. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
通过共沉淀法制备了亚微米尺寸的羟基锡酸钴（CHS）阻燃剂，并将其应用于软质聚氯乙烯（PVC）中，制得CHS/PVC复合材料。采用极限氧指数仪（LOI）、锥形量热仪、TG和拉伸仪研究了CHS/PVC复合材料的阻燃性能、热稳定性和力学性能。结果表明，CHS可以有效提高CHS/PVC复合材料的阻燃性能，并对CHS/PVC复合材料的力学性能保护较好；与空白PVC相比，当CHS添加量（CHS与PVC质量比）为10%时，CHS/PVC复合材料的LOI增加了2.3%，热释放速率峰值和烟释放速率峰值分别下降了39.6%和57.4%。这主要是由于CHS受热后脱除的水具有冷却和稀释热量的作用；另一方面在燃烧过程中生成的CoCl2可以有效催化PVC早期分解，形成更加致密且连续的残炭，从而有效抑制PVC的燃烧。 [ABSTRACT FROM AUTHOR] |
|
Copyright of Acta Materiae Compositae Sinica is the property of Acta Materiea Compositae Sinica Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
