A green and highly efficient sodium alginate based flame retardant polystyrene coating solution

IF 6.3 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-05-22 DOI:10.1016/j.polymdegradstab.2025.111443

Linlin Zhang, Wei Zhang, Yifu Xiang, Wantong Jiang, Zhixin Yang, Bin Li

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引用次数: 0

Abstract

To improve the flame retardancy of EPS, a kind of flame retardant expandable polystyrene foam (EPS) was prepared by coating method using biobased sodium alginate (SA) as binder and flame retardant, adding ammonium polyphosphate (APP) and dipentaerythritol (DPER). The flame retardancy, mechanical properties and smoke suppression properties of different components of flame retardants were studied. When the ratio of SA:APP:DPER is 9:250:250, the peak heat release rate is 121.92 kW/m², which is 71.15 % lower than that of pure EPS, and the peak time is delayed. The maximum smoke density and smoke density grade decreased significantly. The vertical combustion test can pass the UL-94 test to V-0 level. In the combustion process, APP decomposes to produce acid source, which promotes the dehydration of DPER to char reaction. The two work together to participate in char formation, forming a C/N/P mixed carbon layer, which can isolate the transfer of heat, oxygen and combustible substances and play a flame retardant role. The coated EPS/SA/APP/DPER-1 samples showed the best comprehensive properties, providing a new strategy for the use of bio-based coated flame retardant EPS.

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一种绿色高效的海藻酸钠基阻燃聚苯乙烯涂料溶液

为提高EPS的阻燃性，以生物基海藻酸钠（SA）为粘结剂和阻燃剂，加入聚磷酸铵（APP）和二季戊四醇（DPER），采用包覆法制备了一种阻燃型可膨胀聚苯乙烯泡沫塑料（EPS）。研究了不同组分阻燃剂的阻燃性能、力学性能和抑烟性能。当SA:APP:DPER为9:250:250时，峰值放热率为121.92 kW/m2，比纯EPS低71.15%，且峰值时间延迟。最大烟密度和烟密度等级显著降低。垂直燃烧测试可通过UL-94测试至V-0级。APP在燃烧过程中分解生成酸源，酸源促进DPER脱水成焦反应。两者共同参与成炭，形成C/N/P混合碳层，可以隔绝热量、氧气和可燃物的传递，起到阻燃作用。包覆的EPS/SA/APP/DPER-1样品综合性能最佳，为生物基包覆阻燃EPS的使用提供了新的策略。

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.