CAJ | 학술논문

采用球磨、喷雾干燥、气流粉碎三种方法分别对酶解木质素(EHL)进行预处理，考察其对丁腈橡胶(NBR)的补强性能影响。结果表明，EHL经气流粉碎预处理后的堆积密度最小(0.3329 g?cm-3)，其在NBR基质中的分散粒径最细(约为2.5μm)且最均匀，对NBR的补强效果也最好。硫化胶的综合力学性能方面，气流粉碎预处理方法明显优于球磨法和喷雾干燥法。当EHL的用量为40质量份(phr)时，气流粉碎的NBR/EHL硫化胶的拉伸强度比球磨法、喷雾干燥法分别高出24.44%、61.29%；比空白 NBR 的拉伸强度提高257%。热重及热氧老化力学性能分析表明，酶解木质素在NBR/EHL共混体系中起到一定的热稳定及抗老化作用。扫描电镜图像显示，气流粉碎的酶解木质素与NBR的相容性比球磨、喷雾干燥法的有较大提高，木质素颗粒与橡胶相间的相互作用力较强。
채용구마、분무간조、기류분쇄삼충방법분별대매해목질소(EHL)진행예처리，고찰기대정정상효(NBR)적보강성능영향。결과표명，EHL경기류분쇄예처리후적퇴적밀도최소(0.3329 g?cm-3)，기재NBR기질중적분산립경최세(약위2.5μm)차최균균，대NBR적보강효과야최호。류화효적종합역학성능방면，기류분쇄예처리방법명현우우구마법화분무간조법。당EHL적용량위40질량빈(phr)시，기류분쇄적NBR/EHL류화효적랍신강도비구마법、분무간조법분별고출24.44%、61.29%；비공백 NBR 적랍신강도제고257%。열중급열양노화역학성능분석표명，매해목질소재NBR/EHL공혼체계중기도일정적열은정급항노화작용。소묘전경도상현시，기류분쇄적매해목질소여NBR적상용성비구마、분무간조법적유교대제고，목질소과립여상효상간적상호작용력교강。
The influence of three pretreatment methods (Ball Milling (BM), Spray Drying (SD) and Jet Milling (JM)) of Enzymatic Hydrolysis Lignin (EHL) on their acrylonitrile butadiene rubber (NBR) reinforcement abilities was investigated. The results show that the Jet Milled Lignin (EHL-JM) has the smallest bulk density (0.3329 g?cm-3), the finest particle size (about 2.5 μm) and the best dispersion in NBR matrices, which results in the best strengthening effect. When 40 phr (parts per hundred rubber) lignin was added, the tensile strength of NBR reinforced by EHL-JM is 24.44% and 61.29% higher than that of EHL-BM and EHL-SD, respectively, and the tensile strength is 257%times higher than that of pure NBR. Thermogravimetry results and the analysis of thermal-oxidative aging mechanical properties reveal that EHL can enhance thermal-stabilizing and anti-aging properties of the NBR/EHL blends. Scanning electron microscope images show that, comparing with EHL-BM and EHL-SD, EHL-JM has better compatibility with NBR and the interphase adhesion between lignin particles and rubber is stronger.