橡胶籽生物柴油与橡胶材料的相容性研究

STUDY ON THE ELASTOMER COMPATIBILITY OF RUBBER SEED OIL BIODIESEL

对橡胶籽生物柴油与氟橡胶、丁腈橡胶等8种橡胶材料的相容性进行研究,结果表明,所有橡胶样品在橡胶籽生物柴油中均发生不同程度的物性变化(质量、体积、表面边长增大,硬度发生变化),变化程度由大到小的顺序为:天然橡胶>三元乙丙橡胶>氯丁橡胶>聚丙烯酸酯橡胶>丁腈橡胶>氢化丁腈橡胶>氟硅橡胶>氟橡胶;对比研究橡胶籽生物柴油、调合橡胶籽生物柴油及石化柴油对橡胶材料相容性的影响,结果表明,油品中橡胶籽生物柴油含量越低,橡胶材料质量、体积、硬度等物性变化越小;对调合橡胶籽生物柴油与典型车辆用O型密封圈相容性研究的结果表明,两者具有良好的相容性;同时,对不同含胶率的丁腈橡胶与橡胶籽生物柴油的相容性研究的结果表明,含胶率不同,丁腈橡胶物性变化也不同,可以通过调整橡胶材料的含胶率来减少橡胶籽生物柴油对其质量、体积、硬度等物性变化的影响。

The elastomer compatibility of rubber seed oil biodiesel was studied involving eight kinds of elastomers, pure rubber seed oil biodiesel（BD100）, 0# diesel fuel, blended rubber seed oil biodiesel（BD20）and nitrile rubbers with various rubber contents. Results showed that when eight kinds of elastomers were soaked in BD100 for a long term,the physical properties of elastomers,such as mass, volume and hardness, were changed and the changes from more to less were in the order of nature rubber〉 epdm rubber〉ehloroprene rubber〉polyacrylate rubber〉nitrile rubber〉hydrogenated nitrile rubber〉 fluoro silicone rubber,fluorine rubber. Test results of soaking elastomers in 0# diesel fuel,BD20 and BD100 showed that the changes in physical properties of elastomers decreased with the decrease of biodiesel content in fuels. Tests of fuels with nitrile rubbers having various rubber contents showed that the changes of the physical properties of nitrile rubbers varied with the various of rubber content in nitrile rubber,thus the changes of elastomer properties could be altered by adjusting the rubber content in elastomers. However,test results of soaking sealing O-rings from conventional vehicle in BD20 for a long term showed that their compatibility was excellent.