二元乙丙橡胶固态聚集态结构对比
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摘要
采用核磁共振波谱、差示扫描量热和热失重等方法对比解析研究了中国石油吉林石化公司生产的牌号为J-0010的二元乙丙橡胶(J-0010 EPM)和国外同类产品(Foreign EPM)。结果表明,J-0010 EPM所含乙烯单元质量分数为47. 6%,Foreign EPM为44. 1%;前者的连续链段要多于后者,导致其局部有序现象更加明显,因而其链段分布还需进一步优化。两种二元乙丙橡胶经热处理后在玻璃化转变区均出现异常吸收峰,表明二者均存在局部有序的聚集态结构,且J-0010 EPM中类似微晶的局部有序结构较Foreign EPM要多。两种二元乙丙橡胶均具有良好的热稳定性。
Ethylene propylene rubber( EPM) J-0010 produced by Jilin Petrochemical Company,Petro China and a similar foreign EPM product were compared and studied by nuclear magnetic resonance spectroscopy,differential scanning calorimetry and thermogravimetic analysis. The results showed that the mass fraction of ethylene unit in J-0010 EPM was 47. 6%,and that in foreign EPM 44. 1%. The former had more continuous segments than the latter,which resulted in more local ordered structure,so that its segments distribution need to be optimized. After heat treatment, the abnormal absorption peaks developed in the glass transition zone for both the two kinds of EPM,indicating the existence of local ordered aggregation structure,and the microcrystal-like local ordered structure in J-0010 EPM was more than that in foreign EPM. And the two kinds of EPM both had good thermal stability.
Ethylene propylene rubber( EPM) J-0010 produced by Jilin Petrochemical Company,Petro China and a similar foreign EPM product were compared and studied by nuclear magnetic resonance spectroscopy,differential scanning calorimetry and thermogravimetic analysis. The results showed that the mass fraction of ethylene unit in J-0010 EPM was 47. 6%,and that in foreign EPM 44. 1%. The former had more continuous segments than the latter,which resulted in more local ordered structure,so that its segments distribution need to be optimized. After heat treatment, the abnormal absorption peaks developed in the glass transition zone for both the two kinds of EPM,indicating the existence of local ordered aggregation structure,and the microcrystal-like local ordered structure in J-0010 EPM was more than that in foreign EPM. And the two kinds of EPM both had good thermal stability.
引文
[1]陈成斌,张炜.二元乙丙橡胶新牌号J-0050的开发[J].弹性体,1999,9(3):28-31.
[2]王宏宝.乙丙共聚物微观结构剖析、应力诱导结晶及橡胶网络模型的研究[D].北京:北京化工大学,2012.
[3]崔小明.乙丙橡胶生产技术发展趋势及市场分析[J].化工新型材料,2010,38(9):77-80.
[4]吴贻珍.乙丙橡胶开发和应用研究进展[J].橡胶工业,2012,59(2):118-127.
[5] Fan Zhiqiang,Zhang Yuqing,Xu Junting,et al. Structure and properties of polypropylene/poly(ethylene-co-propylene)in-situ blends synthesized by spherical Ziegler-Natta catalyst[J].Polymer,2001,42(13):5559-5566.
[6] Smith P B,Pasztor A J,Mc Kelvy M L,et al. Analysis of synthetic polymers and rubbers[J]. Analytical Chemistry,1999,71(12):61-80.
[7] Loadman M J R. Analysis of rubber and rubber-like polymers[M]. Dordrecht:Kluwer Academic Publishers,1998:129-205.
[8] Pirouz S,Duhamel J,Jiang S,et al. Using pyrene excimer fluorescence to probe the interactions between viscosity index improvers and waxes present in automotive oil[J]. Macromolecules,2017,50(6):2467-2476.
[9]王克强,刘娴芹,李素,等.乙丙橡胶的分子链结构及其加工性质[J].高分子学报,1988,3(3):189-195.
[10] Randall J C. Methylene sequence distributions and number average sequence lengths in ethylene-propylene copolymers[J].Macromolecules,1978,11(1):33-36.
[11] Carman C J,Harrington R A,Wilkes C E. Monomer sequence distribution in ethylene-propylene rubber measured by13CNMR(3):Use of reaction probability model[J]. Macromolecules,1977,10(3):536-544.
[12]董慧茹,陶红,王楠楠,等.光谱法分析乙丙共聚物的序列结构及链节比[J].高等学校化学学报,2006,27(5):961-965.
[13]胡文兵,于同隐.无规共聚物熔体结晶的计算机模拟[J].高等学校化学学报,1995,16(7):1140-1142.
[14]吴忠文,魏青阳.无定形高分子的结构与性能关系的研究(Ⅱ)[J].高等学校化学学报,1986,7(11):1046-1050.
[2]王宏宝.乙丙共聚物微观结构剖析、应力诱导结晶及橡胶网络模型的研究[D].北京:北京化工大学,2012.
[3]崔小明.乙丙橡胶生产技术发展趋势及市场分析[J].化工新型材料,2010,38(9):77-80.
[4]吴贻珍.乙丙橡胶开发和应用研究进展[J].橡胶工业,2012,59(2):118-127.
[5] Fan Zhiqiang,Zhang Yuqing,Xu Junting,et al. Structure and properties of polypropylene/poly(ethylene-co-propylene)in-situ blends synthesized by spherical Ziegler-Natta catalyst[J].Polymer,2001,42(13):5559-5566.
[6] Smith P B,Pasztor A J,Mc Kelvy M L,et al. Analysis of synthetic polymers and rubbers[J]. Analytical Chemistry,1999,71(12):61-80.
[7] Loadman M J R. Analysis of rubber and rubber-like polymers[M]. Dordrecht:Kluwer Academic Publishers,1998:129-205.
[8] Pirouz S,Duhamel J,Jiang S,et al. Using pyrene excimer fluorescence to probe the interactions between viscosity index improvers and waxes present in automotive oil[J]. Macromolecules,2017,50(6):2467-2476.
[9]王克强,刘娴芹,李素,等.乙丙橡胶的分子链结构及其加工性质[J].高分子学报,1988,3(3):189-195.
[10] Randall J C. Methylene sequence distributions and number average sequence lengths in ethylene-propylene copolymers[J].Macromolecules,1978,11(1):33-36.
[11] Carman C J,Harrington R A,Wilkes C E. Monomer sequence distribution in ethylene-propylene rubber measured by13CNMR(3):Use of reaction probability model[J]. Macromolecules,1977,10(3):536-544.
[12]董慧茹,陶红,王楠楠,等.光谱法分析乙丙共聚物的序列结构及链节比[J].高等学校化学学报,2006,27(5):961-965.
[13]胡文兵,于同隐.无规共聚物熔体结晶的计算机模拟[J].高等学校化学学报,1995,16(7):1140-1142.
[14]吴忠文,魏青阳.无定形高分子的结构与性能关系的研究(Ⅱ)[J].高等学校化学学报,1986,7(11):1046-1050.