纳米碳酸钙填充 NBR 的研究

吴绍吟　 练恩生　 马文石　 李小锦　 苟权俊　

摘　要：对纳米碳酸钙白燕华 CC 单独使用或与高耐磨炭黑(HAF)并用填充中等丙烯腈含量 NBR N-240 的基本力学性能和硫化性能进行了研究。结果表明，随着白燕华 CC 用量的增大，胶料表现出比填充非极性 SBR更高的拉仲强度和撕裂强度，而硫化速度却明显减慢。通过调整硫化体系，硫化性能可得到显著改善，甚至可以达到用低温(110～130℃)短时间硫化的效果，胶料的物理性能也相应获得提高。此外，白燕华 CC 填充的NBR N-240 胶料耐油性能不亚于炭黑单独填充的胶料，证明了纳米碳酸钙应用于中等丙烯腈含量耐油 NBR 的可行性。
关键词：纳米碳酸钙；白燕华 CC；NBR；炭黑；并用；低温硫化；耐油性能
分类号：TQ333．7；TQ330．38　文献标识码：B
文章编号：1000-890X(2000)05-0267-05

Study on nanon calcium carbonate-filled NBR

WU Shao-yin
(South China University of Technology, Guangzhou 510641)
LIAN En-sheng
(Guangping Chemical Industrial Co. Ltd, Enping 529400)
MA Wen-shi ,LI Xiao-jin ,GOU Ouan-jun
(South China University of Technology, Guangzhou 510641)

Abstract：The physical properties and the curing behavior of medium acrylonitrile NBR filled with nanon calcium carbonate calmos CC or calmos CC/HAF were investigated. The results showed that when compared with SBR, the NBR filled with calmos CC had higher tensile strength and tear strength, but lower curing speed. By adjusting the curing system, the curing behavior improved significantly and the physical properties of compound also improved. In addition, the oil resistance of NBR N240 filled with calmos CC was comparable to that with carbon black alone.
Keywords：nanon calcium carbonate; calmos CC; NBR; carbon black; oil resistance; low temperature vulcanization