论文部分内容阅读
橡胶密封圈适用于耐油、耐热、耐酸、碱等全胶或夹织物的密封橡胶制品,用于各种工程机械和设备中,在规定的温度、压力和不同工作介质中起密封作用。橡胶密封件材料的选择及性能要求: 橡胶密封件的材料主要由合成橡胶加入增强剂(碳黑等),增塑剂(硬酸脂、二丁脂等),硫化促进剂以及老化剂等,经辊式炼胶机混炼后,放进金属模具中加压、加热硫化成型,为达到使用机械性能,根据使用条件,对橡胶配合选择适当的配比。丁腈橡胶是当前应用在液压工程机械及其它设备最广泛的耐油橡胶,是丁二烯和丙烯腈的共聚物,分高腈、中腈、低腈三种,它的性能是根据丙烯腈含量不同而变异,由于在
The rubber seal ring is suitable for sealing rubber products with oil resistance, heat resistance, acid resistance, alkali resistance, etc. in all kinds of construction machinery and equipment, and plays a sealing role in specified temperature, pressure and different working media. Rubber seal material selection and performance requirements: The rubber seal material is mainly composed of synthetic rubber added reinforcing agent (carbon black, etc.), plasticizer (hard acid fat, dibutyl grease, etc.), vulcanization accelerator and aging agent, etc. After being mixed with a roll-type rubber mixing machine, the mixture is put into a metal mold for pressurization and heating and vulcanization molding. In order to achieve the use of the mechanical properties, according to the use conditions, an appropriate ratio is selected for the rubber compounding. Nitrile rubber is the most widely used oil resistant rubber in hydraulic engineering machinery and other equipment. It is a copolymer of butadiene and acrylonitrile. It is divided into three types: high nitrile, middle nitrile and low nitrile. Its performance is based on acrylonitrile content. Different and varied due to