充油量对Fe系1,2-聚丁二烯橡胶性能的影响

The effect of oil content on the properties of oil-extended 1,2-polybutadiene rubber produced with iron catalyst systems

以芳烃油作填充油,考察了6种充油量对Fe系1,2-聚丁二烯橡胶的加工工艺性能和硫化胶的性能的影响。实验结果表明,随充油量的增加,生胶门尼粘度ML110+04℃值下降,可塑性增加,混炼行为变佳;硫化胶的扯断伸长率、永久变形增大,而拉伸强度和撕裂强度在充油量为20份时出现极大值,300%定伸应力、硬度、生热和磨耗等均降低。综合考虑,充油量为20份为宜。

The effect of six kinds of oil loading （5-40phr） on the process,ability and the properties of vulcanizates of 1,2-polybutadiene rubber with iron catalyst system was studied with the aromatic oil as extender. The experimental results showed that the Mooney viscosity value（ ML）of raw rubber decreased, but plasticity increased with increasing the oil loading, the mixing behavior changed into good, the elongation at break and the permanent set of the oil-extented vulcanizates increased with increasing the oil loading, but the tensile strength and tear strength appeared maximum value at the oil loading of 20phr, the modulus at 300 % elongation, hardness, heat build-up and abrasion all decreased. It was suitable in the oil loading of 20 phr.