|本期目录/Table of Contents|

[1]杨 柳,姜 莹,陈宇方,等.天然橡胶、异戊橡胶和天然橡胶/异戊橡胶并用胶的鉴定方法[J].合成橡胶工业,2023,6:449-456.
 YANG Liu,JIANG Ying,CHEN Yu-fang,et al.Identification method of natural rubber, isoprene rubber and natural rubber/isoprene rubber blend[J].China synthetic rubber industy,2023,6:449-456.
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天然橡胶、异戊橡胶和天然橡胶/异戊橡胶并用胶的鉴定方法(PDF)

《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]

期数:
2023年6期
页码:
449-456
栏目:
出版日期:
2023-11-15

文章信息/Info

Title:
Identification method of natural rubber, isoprene rubber and natural rubber/isoprene rubber blend
文章编号:
1000-1255(2023)06-0449-08
作者:
杨 柳12姜 莹12陈宇方3颜渊巍1朱芙蓉12周志诚12刘国钧12王 进12
1. 株洲时代新材料科技股份有限公司,湖南 株洲 412007; 2. 国家轨道交通高分子材料及制品质量检验检测中心,湖南 株洲 412007; 3. 国防科技大学空天科学学院 材料科学与工程系,长沙 410003
Author(s):
YANG Liu12 JIANG Ying12 CHEN Yu-fang3 YAN Yuan-wei1 ZHU Fu-rong12 ZHOU Zhi-cheng12 LIU Guo-jun12 WANG Jin12
1. Zhuzhou Times New Material Technology Co Ltd, Zhuzhou 412007, China; 2. National Inspection Center of Polymeric Materials and Products for Railways (Hunan), Zhuzhou 412007, China; 3. Department of Materials Science and Engineering, School of Aerospace Science, National University of Defense Technology, Changsha 410003, China
关键词:
天然橡胶异戊橡胶并用胶鉴定内标法气相色谱-质谱联用丙酮抽提浓缩液特征碎片离子
Keywords:
natural rubber isoprene rubber blend identification internal standard method gas chromatography-mass spectrometry acetone extract concentrate characteristic fragment ion
分类号:
TQ 333.3
DOI:
DOI:10.19908/j.cnki.ISSN1000-1255.2023.06.0449
文献标识码:
B
摘要:
以丙酮为溶剂,对6种天然橡胶和2种异戊橡胶进行抽提,基于天然橡胶与异戊橡胶丙酮抽提浓缩液成分存在差异,选择了天然橡胶生胶、异戊橡胶生胶、天然橡胶硫化胶、异戊橡胶硫化胶和天然橡胶/异戊橡胶并用硫化胶定量分析内标物,此外还采用内标法对丙酮抽提浓缩液进行分析,从而建立了天然橡胶、异戊橡胶及天然橡胶/异戊橡胶并用胶的鉴定方法,最后将该方法应用于送检样品主体成分的鉴定。结果表明,角鲨烷可作为天然橡胶、异戊橡胶和天然橡胶/异戊橡胶并用胶定量分析的内标物;在优选的气相色谱-质谱联用定量分析检测条件下,通过定性分析天然橡胶中的γ-谷甾醇和γ-生育三烯酚,同时结合内标法定量分析硫化胶丙酮抽提浓缩液中特定抗氧剂的含量,可以测定天然橡胶/异戊橡胶并用胶中天然橡胶和异戊橡胶的并用比,其中以质荷比为296的特征碎片离子作为异戊橡胶SKI-3定量分析参照特征碎片离子的偏差为-5%;该鉴定方法对于送检样品主体成分的鉴定结果较好。
Abstract:
Six kinds of natural rubbers and two kinds of isoprene rubbers were extracted with acetone as the solvent, and the selection of the internal standard for quantitative analysis of raw rubbers of natural rubber and isoprene rubber and vulcanizates of natural rubber, isoprene rubber and natural rubber/isoprene rubber blend was based on the diffe-rence in the composition of acetone extract concentrate of natural rubber and isoprene rubber. In addition, acetone extract concentrate was analyzed by internal standard method, and the identification method of natural rubber, isoprene rubber and natural rubber/isoprene rubber blend was established. Finally, the method was applied to the identification of the main components of the submitted samples. The results showed that squalane could be used as the internal standard for quantitative analysis of natural rubber, isoprene rubber and natural rubber/isoprene rubber blend. Under the preferred gas chromatography-mass spectrometry quantitative analysis and detection conditions, the blending ratio of natural rubber and isoprene rubber in natural rubber/isoprene rubber blend could be measured by the qualitative analysis of γ-sitosterol and γ-tocotrienol in natural rubber, combined simultaneously with the quantitative analysis of the specific antioxidant in the acetone extract concentrate of vulcanizate by internal standard method, of which the deviation was -5% when the characteristic fragment ion whose mass to charge ratio was 296 was used as the referenced characteristic fragment ion for quantitative analysis. The identification method showed good results in identifying the main components of the submitted samples.

参考文献/References

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备注/Memo

备注/Memo:
更新日期/Last Update: 2023-11-15