文献类型：期刊文献

英文题名：Preparation and properties of ceramifiable flame-retarded silicone rubber composites

作者：Lou, Feipeng[1];Yan, Wei[1];Guo, Weihong[1,2];Wei, Ting[1];Li, Qiuying[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Preparat & Applicat Ultrafine Mat, Polymer Proc Lab,Minist Educ, Shanghai 200237, Peoples R China;[2]Collaborat Innovat Ctr Petrochem New Mat, Anqing 246011, Anhui, Peoples R China

年份：2017

卷号：130

期号：2

起止页码：813

外文期刊名：JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY

收录：;EI(收录号：20172203710743);WOS:【SCI-EXPANDED(收录号:WOS:000413264100021)】；

基金：The authors sincerely acknowledge 'Scientific and Technological Achievements Transformation Program of Jiangsu Province (SBA2014010034)' and 'Ningbo Industrial Major Projects (201601ZD-A01026)'.

语种：英文

外文关键词：Silicone rubber; Flammability; Ceramifiable; Sintering; Flame-retardant

摘要：Ceramifiable flame-retardant silicone rubber composites were prepared by silicone rubber (SR) as the base polymer, and ammonium polyphosphate, calcium carbonate, sericite mica, and glass frits were utilized as additives. The flammability and thermal stability properties of ceramifying silicone rubber composites were studied by the limiting oxygen index (LOI), microscale combustion calorimetry (MCC), and thermogravimetric analysis (TG). The ceramic residues formed at various temperatures were studied by mechanical testing, scanning electron microscopy (SEM), and X-ray diffraction (XRD). The results indicated that the ceramifying silicone rubber achieved a LOI value of 31.2% and the flexural strength of ceramic residues formed at 1000 A degrees C was 19.7 MPa. Moreover, the MCC results demonstrated that the heat release rate and total release rate of the composites were reduced significantly compared to the corresponding value of neat SR. The TG showed that the residue of composites was approximately 61.5% at 700 A degrees C, as significantly higher than that the residue of neat SR. The XRD results demonstrated that fluoroapatite and Ca2SiO4 crystals were produced in the ceramic residue at high temperatures. The SEM analysis depicted that the number of holes was reduced and a dense structure was formed as the sintering temperature increased, leading to the excellent mechanical properties of formed ceramics at high temperatures.