受阻酚AO-60/丁腈橡胶-环氧化天然橡胶-天然橡胶复合材料的制备及其阻尼性能

选用受阻酚AO-60/丁腈橡胶（NBR）（质量比40:100）作为阻尼相，环氧化天然橡胶（ENR）作为相容剂，制备了AO-60/NBR-ENR-天然橡胶（NR）复合材料。研究发现，复合材料的微观结构呈"海岛结构"，当质量比NR/NBR为60:40和50:50时，体系中出现双连续相结构。复合材料呈现两个玻璃化转变温度，分别出现在-60℃附近和-10℃附近；随着AO-60/NBR质量比的增加，在-20~40℃温度范围内复合材料的有效阻尼温域从0℃拓宽到35.9℃，且损耗因子随应变增大有小幅提升。复合材料在低应变下呈现低应力，表现出高柔性，同时其在较高应变下存在应力突变点，表现出较高的拉伸强度和扯断伸长率。 

Preparation and damping properties of hindered phenol AO-60/nitrile butadiene rubber-epoxidized natural rubber-natural rubber composites

Hindered phenol AO-60/nitrile butadiene rubber-epoxidized natural rubber-natural rubber composites were prepared by using hindered phenol AO-60/nitrile butadiene rubber (NBR) (mass ratio 40:100) as damping phase and epoxidized natural rubber (ENR) as compatibilizer. It is found that the microstructure of the composites is "sea-island structure" and the co-continuous morphology appears when the mass ratio of NR/NBR is 60:40 and 50:50. The composite exhibit two glass transition temperatures, which occur near -60℃ and around -10℃. With the increase of mass ratio of AO-60/NBR, the effective damping of the composite in the temperature range of -20-40℃ is widened from 0℃ to 35.9℃, and the loss factor increases slightly with increasing strain. The composites exhibit low stress at low strain and exhibits high flexibility. At the same time, it has a stress crack point at higher strain, showing high tensile strength and elongation at break.