CAJ | 학술논문

采用傅里叶变换红外光谱分析、凝胶渗透色谱-激光光散射-自动黏度在线检测仪、动态力学性能分析及差示扫描量热仪等手段对国产溶聚丁苯橡胶(SSBR-T 2000 R)的微观结构及其基本性能进行了分析与表征,并与乳聚丁苯橡胶(ESBR-1502)作了对比.结果表明,与ESBR-1502相比,SSBR-T 2000 R具有分子量分布窄、数均分子量较高、重均分子量明显低、支化度低的特点;其链结构中顺式-1,4-结构含量高、反式-1,4-结构、1,2-结构含量低;热稳定性高于ESBR-1502;玻璃化转变温度比ESBR-1502低,说明其具有优异的低温性能;高弹态动态模量较低,但其动态损耗因子和动态生热低于ESBR-1502;其硫化特性为焦烧时间较长,而正硫化时间较短;用密炼机加工胶料,SSBR-T 2000 R的耐屈挠龟裂性优于ESBR-1502,且压缩生热较低.
채용부리협변환홍외광보분석、응효삼투색보-격광광산사-자동점도재선검측의、동태역학성능분석급차시소묘량열의등수단대국산용취정분상효(SSBR-T 2000 R)적미관결구급기기본성능진행료분석여표정,병여유취정분상효(ESBR-1502)작료대비.결과표명,여ESBR-1502상비,SSBR-T 2000 R구유분자량분포착、수균분자량교고、중균분자량명현저、지화도저적특점;기련결구중순식-1,4-결구함량고、반식-1,4-결구、1,2-결구함량저;열은정성고우ESBR-1502;파리화전변온도비ESBR-1502저,설명기구유우이적저온성능;고탄태동태모량교저,단기동태손모인자화동태생열저우ESBR-1502;기류화특성위초소시간교장,이정류화시간교단;용밀련궤가공효료,SSBR-T 2000 R적내굴뇨구렬성우우ESBR-1502,차압축생열교저.
The characterization of microstructure and basic properties of domestic solution-polymerized styrene-butadiene rubber (SSBR-T 2000 R) was carried out by different means, such as Fourier transform infrared spectroscopy, gel permeation chromatography-laser light scattering-automatic online viscosity detector, dynamic mechanical analysis and differential scanning calorimeter, and the comparison with emulsion styrene-butadiene rubber (ESBR-1502) was made. The results showed that SSBR-T 2000 R had a narrower molecular mass distribution, higher number-average molecular mass, significantly lower weight-average molecular mass and lower branching degree compared with ESBR-1502. Its cis-1,4-unit content was higher, while trans-1,4-unit and 1,2-unit content lower than those of ESBR-1502. Its thermal stability was higher than ESBR-1502. Its glass transition temperature was lower than ESBR-1502 which indicated that it had a better low temperature property. Under dynamic application, SSBR-T 2000 R had lower dynamic modulus, loss factor and dynamic heat build-up than ESBR-1502. For cure characteristics, SSBR-T 2000 R had a longer scorch time and shorter optimal curing time than ESBR-1502. SSBR-T 2000 R vulcanizates showed better flex-crack resistance and lower compression heat build-up than ESBR-1502 when compounds mixed by internal mixer.