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基于磷酸酯的新型阻燃定型相变材料的制备及其性能

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针对石蜡定型相变材料(PCM)存在的可燃性等缺陷,本文采用一种新型的聚磷酸酯阻燃剂(OL1001),并探索OL1001 与二乙基次磷酸铝(ADP)复配后对定型相变材料(高密度聚乙烯/石蜡)阻燃性能的影响,随后引入自由基捕捉剂NOR116,研究了3 种阻燃剂在不同比例下对定型PCM阻燃性、热稳定性、储热性、泄漏量等性能的影响规律,并探索了其阻燃机理.燃烧结果显示,当ADP∶OL1001∶NOR116 的质量比为16∶8∶1 时,总添加质量分数为23%时,PCM可以通过V-2级(0.8 mm),极限氧指数(LOI)达到25.1%,并具有较好的热稳定性和成炭性.同时,差示扫描量热仪(DSC)测试显示,阻燃后的PCM的储热性可以达到91.4 J/g,具有良好的储热性.热降解动力学显示,表观活化能提高到83.4 kJ/mol,表明引入该体系到材料中后可以显著的提高材料的热稳定性,延缓材料降解.泄露测试表明,阻燃PCM材料在 70℃以下无泄漏.力学测试结果显示,阻燃体系对PCM材料的力学性能会产生少量不利影响.扫描电镜(SEM)显示,在凝聚相形成了稳定的炭层.
Preparation and Performances of Novel Flame-Retardant Form-Stable Phase Materials Based on Phosphate
For the fire defects of paraffin-based form-stable phase change materials (PCM),a novel polyphosphate flame retardant (OL1001) was adopted. The influences of OL1001 and diethylaluminum phosphite (ADP) on the flame retardancy of form-stable PCM (high-density polyethylene/paraffin) were also studied. Meanwhile,the free radical catcher NOR116 was introduced to study the effects of three flame retardants on the flame retardancy,thermstability,heat storage and leakage properties of form-stable PCM in different proportions,and the flame retardancy mechanism was explored. The combustion results show that when the mass ratio of ADP:OL1001:NOR116 is 16:8:1 with a total addition amount of 23％,PCM could achieve a V-2 rating (0. 8 mm) and its LOI could reach 25. 1％,it also has good thermal stability and char formation performance. DSC test shows that the heat storage performance of the flame-retardant PCM could reach 91. 4 J/g,revealing a good heat storage performance. The thermal degradation kinetics shows that the apparent activation energy is increased to 83. 4 kJ/mol,and the thermal stability of the material is significantly improved after the system is introduced. Leakage test shows that the flame-retardant PCM material has no leakage below 70 ℃ . The mechanical test results show that the flame-retardant system has a small adverse effect on the mechanical properties of PCM materials. Scanning electron microscope (SEM) shows that the system forms a stability char layer in the condensed phase.

Phase Change MaterialFlame RetardancyPolyphosphateFree Radical TrappingHigh-density PolyethyleneParaffin

肖雄、叶文、艾波、李平阳、林倬仕、陈彦昊、杨朱承、许保云

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上海化工研究院有限公司,上海 200062

聚烯烃催化技术与高性能材料国家重点实验室,上海 200062

中西先进材料技术联合实验室,上海 200062

上海功能阻燃材料工程技术研究中心,上海 200062

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相变材料 阻燃性 聚磷酸酯 自由基捕捉 高密度聚乙烯 石蜡

中西先进材料技术联合实验室上海功能阻燃材料工程技术研究中心上海市"科技创新计划"国际合作项目上海市"科技创新计划"启明星项目

2023YFE011650019DZ22537002152073060023QB1402900

2024

10.3969/j.issn.1005-5770.2024.08.022

塑料工业
中蓝晨光化工研究院有限公司

塑料工业

CSTPCD北大核心
影响因子：0.685
ISSN：1005-5770
年,卷(期)：2024.52(8)