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dc.contributor.authorWang, Zhiwen
dc.contributor.authorJiang, Yan
dc.contributor.authorYang, Xiaomei
dc.contributor.authorZhao, Junhuan
dc.contributor.authorFu, Wanlu
dc.contributor.authorWang, Na
dc.contributor.authorDe-Yi, Wang 
dc.date.accessioned2023-02-16T12:26:17Z
dc.date.available2023-02-16T12:26:17Z
dc.date.issued2022
dc.identifier.issn1996-1944spa
dc.identifier.urihttps://hdl.handle.net/10641/3265
dc.description.abstractCurrently, the development of efficient and environmentally friendly flame-retardant thermoplastic polyurethane (TPU) composite materials has caused extensive research. Ammonium polyphosphate (APP) is used as a general intumescent flame retardant to improve the flame retardancy of TPU. In this paper, we developed a functionalized APP flame retardant (APP-Cu@PDA). Adding only 5 wt% of APP-Cu@PDA into TPU can significantly improve the flame-retardant’s performance of the composite material, reflected by a high LOI value of 28% with a UL-94 test of V-0 rating. Compared with pure TPU, the peak heat release rate, total heat release, peak smoke release rate, and total smoke release were reduced by 82%, 25%, 50%, and 29%, respectively. The improvements on the flame-retardant properties of the TPU/5%APP-Cu@PDA composites were due to the following explanations: Cu2+-chelated PDA has a certain catalytic effect on the carbonization process, which can promote the formation of complete carbon layers and hinder the transfer of heat and oxygen. In addition, after adding 5% APP-Cu@PDA, the tensile strength and elongation at the break of TPU composites did not decrease significantly. In summary, we developed a new flame-retardant APP-Cu@PDA, which has better flame-retardant properties than many reported TPU composites, and its preparation process is simple and environmentally friendly. This process can be applied to the industrial production of flame retardants in the future.spa
dc.language.isoengspa
dc.publisherMaterialsspa
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectThermoplastic polyurethanespa
dc.subjectFlame-retardantspa
dc.subjectAmmonium polyphosphatespa
dc.subjectPolydopaminespa
dc.titleSurface Modification of Ammonium Polyphosphate for Enhancing Flame-Retardant Properties of Thermoplastic Polyurethane.spa
dc.typejournal articlespa
dc.type.hasVersionAMspa
dc.rights.accessRightsopen accessspa
dc.description.extent4370 KBspa
dc.identifier.doi10.3390/ma15061990spa
dc.relation.publisherversionhttps://www.mdpi.com/1996-1944/15/6/1990spa


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