Min Li, Zhaoqi Zhu, Yanjun Chen, Yue Pan, Xiaoyin Cao, Yanju Jing, Rui Jiao, Hanxue Sun, Jiyan Li, An Li
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引用次数: 0
Abstract
The development of high-quality thermal insulation material with exceptional flame-retardant qualities is crucial to reducing energy consumption in buildings and minimizing the risk of fire. Herein, we report the preparation of organic-inorganic composite aerogel by coating Mg/Al-LDH and phytic acid onto the exterior of hollow glass microspheres to obtain PLHGM, mixing PLHGM with the solution of sodium alginate and carboxymethyl cellulose to prepare the SA/CMC-PLHGM aerogel. The synthetic aerogel has exceptional thermal insulation with a thermal conductivity of 0.046 Wm−1K−1. Meanwhile, SA/CMC-PLHGM aerogel has a high limiting oxygen index value is greater than 90%, reaching the UL-94 test V-0 rating. In the cone calorimetry test, the peak heat release rate (pHRR) is 32.97 kW/m2, a 55.19% reduction from the sodium alginate/carboxymethyl cellulose aerogel (SA/CMC aerogel), and the SA/CMC-PLHGM aerogel has lower CO and CO2 production rates compared to the SA/CMC aerogel. The SA/CMC-PLHGM aerogel has properties of lightweight, porous, thermally stable, flame-retardant properties, and superior thermal insulating properties which provide a novel strategy for the practical use of aerogel in the field of modern building construction thermal insulation materials with flame-retardant properties.
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.