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首页> 外文期刊>Journal of Applied Polymer Science >Intumescent Flame-Retarded Building Parts Manufactured from Polyolefines as Well as from Composites of Polyolefines and Bismaleinimides
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Intumescent Flame-Retarded Building Parts Manufactured from Polyolefines as Well as from Composites of Polyolefines and Bismaleinimides

机译：用聚烯烃以及聚烯烃和双马来酰亚胺的复合材料制造的膨胀型阻燃建筑构件

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摘要

Commercial intumescent flame retardants and intumescent compounds were tested as flame retardants for polypropylene. Their routes of decomposition were followed up by thermal gravimetric analysis, differential scanning calorimetry as well as thermal mechanic analysis and described by chemical formula, balances of weight, and heats of formation. These investigations showed that the combination of ammonium polyphosphate, polyols, and melamine exerted intumescence at 400C and melamine was no blowing agent but reacted to melamine polyphosphate. Further they made clear that bisethylenediamine phosphate exerted intumescence at 350C and degraded to piperazine phosphate. Intumescent flame-retarded building parts exemplified the advantage of intumescent flame retardance by the time delay until they still fulfilled their function. F15 classification was achieved for thick walled intumescent polypropylene pipes and thin walled electrical boxes consisting of a flame-retarded glass reinforced bismaleinimide core and an intumescent polyolefine shell in furnace fire tests. The difference in temperatures inside and outside of the building parts was calculated and compared with measurements in fire tests.
机译：测试了商业膨胀型阻燃剂和膨胀型化合物作为聚丙烯的阻燃剂。通过热重量分析，差示扫描量热法和热力学分析来跟踪它们的分解途径，并用化学式，重量平衡和形成热来描述。这些研究表明，聚磷酸铵，多元醇和三聚氰胺的组合在400℃下膨胀，而三聚氰胺不是发泡剂，而是与三聚氰胺反应。此外，他们清楚地表明，磷酸二亚乙基二胺在350℃下膨胀并降解为磷酸哌嗪。膨胀型阻燃建筑部件通过直到它们仍能发挥功能的时间延迟来体现膨胀型阻燃的优势。对于厚壁膨胀型聚丙烯管和薄壁配电箱，在燃烧室燃烧测试中均达到F15分类，该薄壁配电箱由阻燃玻璃纤维增​​强的双马来酰亚胺芯和膨胀型聚烯烃外壳组成。计算出建筑部件内部和外部的温度差，并将其与防火测试中的测量值进行比较。

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