Aminotrimethylene phosphonic acid and 1,10-diaminodecane modified ammonium polyphosphate for polypropylene composites with satisfactory flame retardancy and mechanical properties while maintaining transparency

IF 7.4 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-08-27 DOI:10.1016/j.polymdegradstab.2025.111628

Xinyu Chen , Pengyu Wang , Shuang Qiu , Xiaowei Su , Jun Sun , Xiaoyu Gu , Hanwei Wang , Sheng Zhang

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引用次数: 0

Abstract

Ammonium polyphosphate (APP) is a halogen-free flame retardant with good thermal stability and char-forming ability. However, APP often leads to interface incompatibility, reducing the strength and transparency of the polymer. In this study, a surface modification strategy has been designed and applied in APP to address these challenges. APP is modified with aminotrimethylene phosphonic acid (ATMP) and long-chain alkane 1,10-diaminodecane (DAD) to obtain APP-DA. The prepared APP-DA is then introduced into polypropylene (PP) through melt blending. The flammability tests demonstrate that the APP-DA greatly enhances the fire resistance of PP. Compared with the control PP, the incorporation of 25 wt.% APP-DA into PP increases the limiting oxygen index (LOI) value to 26.7 %, achieves a UL-94 V-0 rating. In addition, the peak heat release rate (pHRR) and the smoke release rate (SPR) are decreased by 66.2 % and 40.0 %, respectively. Moreover, the presence of APP-DA increases the mechanical properties and maintains good transparency. Compared with PP, the impact strength of PP/APP-DA (25 %) sample increases by 19.6 %, and the transparency retains 91.2 %. This APP surface modification strategy offers a practical method for preparing PP composites to meet industrial application requirements.

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氨基三亚甲基膦酸和1,10-二氨基癸烷改性聚磷酸铵制备的聚丙烯复合材料具有良好的阻燃性能和力学性能，同时保持透明度

聚磷酸铵（APP）是一种无卤阻燃剂，具有良好的热稳定性和成炭能力。然而，APP往往会导致界面不相容，降低聚合物的强度和透明度。在本研究中，设计并应用了一种表面改性策略来解决这些挑战。应用氨基三亚甲基膦酸（ATMP）和长链烷烃1,10-二氨基癸烷（DAD）对APP进行修饰，得到APP- da。将制备好的APP-DA通过熔融共混引入聚丙烯（PP）中。可燃性试验结果表明，添加25 wt.%的APP-DA后，PP的极限氧指数（LOI）提高到26.7%，达到UL-94 V-0等级。此外，峰值热释放率（pHRR）和烟气释放率（SPR）分别降低了66.2%和40.0%。此外，APP-DA的存在提高了材料的力学性能，并保持了良好的透明度。与PP相比，PP/APP-DA（25%）样品的冲击强度提高了19.6%，透明度保持了91.2%。这种APP表面改性策略为制备满足工业应用要求的PP复合材料提供了一种实用的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Degradation and Stability 化学-高分子科学

CiteScore

10.10

自引率

10.20%

发文量

325

审稿时长

23 days

期刊介绍： Polymer Degradation and Stability deals with the degradation reactions and their control which are a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology. Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical stress, and during the useful life of the materials when oxygen and sunlight are the most important degradative agencies. In more specialised applications, degradation may be induced by high energy radiation, ozone, atmospheric pollutants, mechanical stress, biological action, hydrolysis and many other influences. The mechanisms of these reactions and stabilisation processes must be understood if the technology and application of polymers are to continue to advance. The reporting of investigations of this kind is therefore a major function of this journal. However there are also new developments in polymer technology in which degradation processes find positive applications. For example, photodegradable plastics are now available, the recycling of polymeric products will become increasingly important, degradation and combustion studies are involved in the definition of the fire hazards which are associated with polymeric materials and the microelectronics industry is vitally dependent upon polymer degradation in the manufacture of its circuitry. Polymer properties may also be improved by processes like curing and grafting, the chemistry of which can be closely related to that which causes physical deterioration in other circumstances.