短纤维增强丁腈橡胶复合材料性能的研究

李波; 何连成; 周雷; 吴宇; 赵洪国; 胡海华

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短纤维增强丁腈橡胶复合材料性能的研究

Study on Properties of Nitrile Rubber Composite Reinforced by Short Fiber

DOI：

中文关键词: 短纤维；纤维素；聚酰胺；聚酯；芳纶；丁腈橡胶；取向；屈服

英文关键词: short fiber；cellulose；polyamide；polyester；aramid；nitrile rubber；orientation；yield

基金项目:

中图分类号:TQ333.7；TQ330.38^＋9

Author Name	Affiliation
LI Bo	CNPC Lanzhou Petrochemical Research Institute
HE Liancheng	CNPC Lanzhou Petrochemical Research Institute
ZHOU Lei	CNPC Lanzhou Petrochemical Research Institute
WU Yu	CNPC Lanzhou Petrochemical Research Institute
ZHAO Hongguo	CNPC Lanzhou Petrochemical Research Institute
HU Haihua	CNPC Lanzhou Petrochemical Research Institute

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中文摘要:

研究几种短纤维部分替代炭黑对丁腈橡胶（NBR）复合材料性能的影响。结果表明：非极性聚酯短纤维胶料的F_L和F_max较小，刚性芳纶短纤维胶料的F_L和F_max较大；与无短纤维胶料相比，短纤维胶料的t₁₀较长，门尼粘度较低，硬度较大，300%定伸应力和拉伸强度较低；沿短纤维取向垂直方向比沿短纤维取向方向胶料的拉伸强度和拉断伸长率较低；短纤维在NBR胶料中的取向程度及其胶料刚性和硬度由大到小的顺序为：芳纶短纤维、聚酯短纤维、聚酰胺纤维和纤维素短纤维；芳纶短纤维胶料的抗撕裂性能较好，聚酯短纤维胶料的综合性能较好；短纤维胶料易发生屈服，短纤维易成为材料破坏的应力集中点。

英文摘要:

In this study，several types of short fibers were applied in nitrile rubber（NBR） composite by replacing part of the carbon black and the effect on the properties of compound was investigated. The testing results showed that the F_L and F_max values of the compound with non-polar polyester short fiber were lower， while those values of the compound with rigid aramid short fiber were higher. Compared with the compound without short fiber，the t₁₀ of the compound with short fiber was prolonged，Mooney viscosity was lower， hardness of the vulcanizate was higher，and the tensile modulus at 300% elongation and tensile strength were lower. The tensile strength and elongation at break of the compound along the vertical direction of fiber orientation were lower than those of compound along the direction of fiber orientation，respectively. The fiber orientation degree，stiffness and hardness of the short fiber filled compound decreased in the order of aramid short fiber，polyester short fiber，polyamide fiber and cellulose short fiber. Aramid short fiber filled compound showed good tear resistance and polyester short fiber filled compound possessed the best overall performance. It was also found that short fiber filled compound tended to yield under stress and short fiber generated stress concentration causing material failure.

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