H3PO3-modified hyperbranched polyethyleneimine/montmorillonite coatings for flame-retardant polyester/cotton fabrics

IF 6.3 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-04-10 DOI:10.1016/j.polymdegradstab.2025.111374

Chunyuan Luo, Nan Li, Ping Zhu, Yuanyuan Yin, Yingjun Xu

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引用次数: 0

Abstract

Polyelectrolyte complex coatings have been developed for flame-retardant fabrics, which demonstrate advantages in simplified operations and high flame retardancy. In this study, a polyelectrolyte complex coating (called PPM) was developed through the integration of H₃PO₃, hyperbranched polyethyleneimine, and montmorillonite, and was subsequently applied onto polyester/cotton fabrics using a one-step blade coating method. We thoroughly investigated the chemical structure, surface morphology, flame retardancy performance, thermal decomposition behavior, and mechanical properties of the coated fabrics. It was found that H₃PO₃ was incorporated into the PPM coating via ionic bonds, with a phosphorus atomic content of 0.9 %. Homogeneous and continuous coatings were formed on the surface of fabrics because of good film-forming ability of PPM. When the PPM loading was 15.3 %, the coated fabric showed a limiting oxygen index value of 64.9 % and quickly self-extinguished during the vertical flammability test with a damage length of 63 mm. In the cone calorimetry test, the PPM-coated fabric presented a 50 % reduction in peak heat release rate and a 52 % decrease in total smoke production. The PPM coating exhibited flame-retardant activities in both condensed and gaseous phases.

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h3po3改性超支化聚乙烯亚胺/蒙脱土阻燃涤棉织物涂料

聚电解质复合涂料是一种用于阻燃织物的涂料，具有操作简单、阻燃性高等优点。本研究通过H3PO3、超支化聚乙烯亚胺和蒙脱土的整合，开发了一种聚电解质复合涂层（PPM），随后采用一步刀涂法将其应用于涤纶/棉织物上。研究了涂层织物的化学结构、表面形貌、阻燃性能、热分解性能和力学性能。发现H3PO3通过离子键进入PPM涂层，磷原子含量为0.9%。PPM具有良好的成膜能力，可在织物表面形成均匀连续的涂层。当PPM浓度为15.3%时，涂层织物的极限氧指数值为64.9%，在垂直可燃性测试中，涂层织物的损伤长度为63 mm，可快速自熄。在锥形量热测试中，ppm涂层织物的峰值热释放率降低了50%，总烟雾产生率降低了52%。PPM涂层在凝聚态和气相均表现出阻燃活性。

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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.