白炭黑/NR复合材料界面相互作用研究

研究白炭黑/NR复合材料的界面相互作用。结果表明，白炭黑粒子间有强相互作用；偶联剂改性可降低白炭黑间相互作用，在白炭黑用量为40份时，偶联剂KH-560适宜用量为7.5～10份；白炭黑用量对其粒子间的相互作用也有很大影响，临界用量为25份；改性白炭黑填充NR硫化胶物理性能较未改性白炭黑硫化胶有所提高，定伸应力、拉伸强度和撕裂强度提高幅度较大。;The interface interaction of silica/NR composite was investigated.The results showed that there was a strong interaction between silica particles，which could be decreased when silica surface was modified with coupling agent，and the proper addition level of coupling agent KH-560 was 7.5～10 phr while the addition level of silica was 40 phr；the addition level of silica also had great effect on the interaction between silica particles，and the critical addition level of silica was 25 phr；the physical properties of modified silica filled NR compound were improved，especially the modulus，tensile strength and tear strength as compared to those of unmodified silica filled NR compound