阻燃剂及加工助剂对三元乙丙橡胶性能的影响  

Effect of Flame Retardant and Processing Aid on Properties of Ethylene Propylene Diene Monomer

作　　者：乔羽 李向梅 汪书苹 高飞[4] 何吉宇[1] 杨荣杰 Yu Qiao;Xiangmei Li;Shuping Wang;Fei Gao;Jiyu He;Rongjie Yang(School of Materials Science&Engineering,Beijing Institute of Technology,National Engineering Research Center of Flame Retardant Materials,Beijing 100081,China;Anhui Province Key Laboratory for Electric Fire and Safety Protection of State Grid Anhui Electric Power Research Institute,Hefei 230022,China;State Grid Laboratory of Fire Protection for Transm ission and Distribution Facilities,Hefei 230022,China;State Key Laboratory of Operation and Control of Renewable Energy&Storage Systems,China Electric Power Research Institute,Beijing 100192,China)

机构地区：[1]北京理工大学材料学院国家阻燃材料工程技术研究中心,北京100081 [2]国网安徽省电力有限公司电力科学研究院电力火灾与安全防护安徽省重点实验室,安徽合肥230022 [3]国家电网公司输变电设施火灾防护实验室,安徽合肥230022 [4]中国电力科学研究院新能源与储能运行控制国家重点实验室,北京100192

出　　处：《高分子材料科学与工程》2019年第12期60-68,共9页Polymer Materials Science & Engineering

基　　金：国家电网公司科技项目(DGB17201800021)

摘　　要：研究了三元乙丙橡胶(EPDM)绝热材料配方中的阻燃体系和交联剂对其性能的影响。结果发现,引入次磷酸铝复合物(AHP)、聚磷酸铵(APP)阻燃体系能降低EPDM绝热材料的线性烧蚀率,次磷酸铝复合物阻燃剂能够有效地提高EPDM的耐烧蚀性能和隔热性能。扫描电镜显示,AHP还可以促进EPDM形成隔热性能更好的炭层。随着烧蚀时间的延长,添加了次磷酸铝复合物的EPDM烧蚀率相比添加了APP阻燃剂的更低,在60 s时为0.046 mm/s,绝热层隔热性能最佳,仅为46.4℃。采用力学性能测试、热重分析、隔热性能测试、热裂解气相色谱/质谱联用(Py-GC/MS)测试分别对含AHP体系,交联剂分别为过氧化二异丙苯(DCP)和二-(叔丁基过氧化异丙基)苯(BIPB)的EPDM及其裂解产物进行了分析。发现添加BIPB的EPDM的力学性能虽然下降约30%,背面温度上升17℃,但其热稳定性几乎不受影响,有害的热裂解产物种类明显减少。The effects of flame retardant systems and crosslinking agents on the properties of ethylene propylene diene monomer(EPDM)insulation materials were investigated.It is found that the introduction of aluminum hypophosphite composite(AHP)and ammonium polyphosphate(APP)flame retardant system can reduce the linear ablation rate of EPDM insulation materials.The AHP flame retardant can effectively improve the ablation performance and the heat insulation performance of EPDM.SEM shows that AHP can promote EPDM to form a carbon layer with better heat insulation performance.With the increase of ablation time,the ablation rate of EPDM with AHP is lower than that with APP flame retardant,and it is 0.046 mm/s at 60 s.The thermal insulation layer of EPDM with AHP has the best heat insulation performance,only 46.4℃.Mechanical test,thermogravimetric analysis(TGA),heat insulation performance test,and pyrolysis gas chromatography/mass spectrometry(Py-GC/MS)test were used to analyze EPDM and its pyrolysis products under the AHP-containing system with dicumyl peroxide(DCP)and bis(t-butylperoxyisopropyl)benzene(BIPB)crosslinking agent respectively.It is found that the mechanical properties of EPDM with BIPB decrease by about 30%and the back temperature is increased by 17℃,but its thermal stability is almost unaffected,and the number of harmful pyrolysis products is significantly reduced.

关 键 词：三元乙丙橡胶 阻燃 交联剂 烧蚀性能 隔热性能 

分 类 号：TQ333.4[化学工程—橡胶工业]