焦磷酸哌嗪/聚磷酸三聚氰胺复配阻燃体系在三元乙丙橡胶中的应用  

Application of Piperazine Pyrophosphate/Melamine Polyphosphate Compound Flame Retardant System in Ethylene Propylene Diene Monomer

作　　者：颜泽培 刘鸣 阮成煜 苏路遥 李波 吕庆 王鹤[1] Zepei Yan;Ming Liu;Chengyu Ruan;Luyao Su;Bo Li;Qing Lü;He Wang(College of Polymer Science and Engineering/Key Laboratory of Rubber and Plastic Materials and Engineering,Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China;Jiangyin Haida Rubber&Plastic Co.,Ltd.,Jiangyin 214400,China)

机构地区：[1]青岛科技大学高分子科学与工程学院/橡塑材料与工程教育部重点实验室,山东青岛266042 [2]江阴海达橡塑股份有限公司,江苏江阴214400

出　　处：《高分子材料科学与工程》2024年第11期50-59,共10页Polymer Materials Science & Engineering

基　　金：山东省自然科学基金资助项目(ZR2020QE073)。

摘　　要：文中选用三元乙丙橡胶(EPDM)为基体,考察了焦磷酸哌嗪(PAPP)/聚磷酸三聚氰胺(MPP)并用比例对EPDM基复合材料硫化特性、填料分散性、力学性能和燃烧行为的影响。研究发现,当PAPP和MPP总量为40份时,随着PAPP比例的增多,EPDM混炼胶的交联密度逐渐降低,返原加剧。与空白样相比,PAPP和MPP的加入有利于提高EPDM硫化胶的硬度、拉伸强度和断裂伸长率,但会使EPDM热分解提前;但对于并用体系来说,随着PAPP并用比例的增加,硬度、撕裂强度、拉伸强度和100%定伸应力不断降低,热分解过程及燃烧过程有明显的促进成炭作用。与空白样相比,PAPP和MPP的加入有利于延长引燃时间,降低峰值热释放速率,火灾行为指数和氧指数提高,尤其是当PAPP/MPP用量比为20:20,EPDM硫化胶的峰值热释放速率相比空白样降低了40.9%,总释放热降低了9.4%,同时具有最低的总烟释放量。In this paper,ethylene propylene diene monomer(EPDM)was selected as matrix,and the effects of the ratio of piperazine pyrophosphate(PAPP)/melamine polyphosphate(MPP)on the curing characteristics,filler dispersion,physical and mechanical properties and combustion behavior of EPDM-based composites were investigated.It is found that when the total amount of PAPP and MPP is 40 phr,with the increase of PAPP ratio,the crosslinking density of EPDM compound decreases gradually and the reversion is intensified.Compared with the blank sample,the addition of PAPP and MPP is beneficial to improve the hardness,tensile strength and elongation at break of EPDM vulcanizate,but it would advance the thermal decomposition of EPDM.However,for the blending system,with the increase of PAPP blending ratio,the hardness,tear strength,tensile strength and 100%elongation stress decrease continuously,and the thermal decomposition process and combustion process have obvious effect on promoting char formation.Compared with the blank sample,the addition of PAPP and MPP is beneficial to prolong the ignition time,reduce the peak heat release rate,and increase the fire performance index(FPI)and limiting oxygen index(LOI).Especially,when the dosage ratio of PAPP/MPP is 20:20,the peak heat release rate of EPDM vulcanizate is reduced by 40.9%compared with the blank sample,the total heat release is reduced by 9.4%,and the total smoke release is the lowest.

关 键 词：三元乙丙橡胶 焦磷酸哌嗪 聚磷酸三聚氰胺 物理力学性能 阻燃性能 

分 类 号：TQ333.4[化学工程—橡胶工业]