Chao Yan , Yiqun Fang , Ruofan Yang , Mengfan Yan , Weihong Wang , Yongming Song , Qingwen Wang
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引用次数: 0
Abstract
The development of efficient, eco-friendly and cost-effective transparent fire-retardant coatings is crucial for maximizing the value of wood resources. In this study, an all-biobased flame retardant (PA-CS) was synthesized from corn starch (CS) and phytic acid (PA). A modified melamine resin (MFGT) with intrinsic flame-retardant properties was prepared by incorporating melamine, formaldehyde, allyl glycidyl ether, and tannic acid. The resulting MFGT@xPA-CS system demonstrated excellent thermal stability and low curing activation energy. Additionally, the system was used on the surface of wood and demonstrated good transparency, outstanding flame retardancy, smoke suppression, and char-forming ability. Cone calorimeter tests revealed that the peak heat release rate (PHRR) of [email protected] decreased by 31.12%, and total smoke production was reduced by 48.03%. Additionally, the residual char increased from 34.93% (c-MFGT) to 43.25% ([email protected]), and the ID/IG ratio of the residual char decreased by 40.58% from 3.08 (c-MFGT) to 1.83 ([email protected]). Gas-phase and condensed-phase pyrolysis products revealed synergistic effects between the phosphorus in PA-CS and the nitrogen in MFGT. Based on these results, a potential flame-retardant mechanism was proposed. This study presents a novel strategy for developing transparent intumescent flame-retardant coatings and broadens the application of biomass-based flame retardants.
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.
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