环保型增塑剂对羧基型丙烯酸酯橡胶性能的影响

Effect of Environment-friendly Plasticizer on Properties of Carboxylated ACM

研究4种增塑剂(RS107,RS735,TP95,TP759)对羧基型丙烯酸酯橡胶(ACM)性能的影响。结果表明:添加增塑剂可以明显改善羧基型ACM胶料的加工性能,同时有延迟硫化的效果;当增塑剂用量相同时,4种增塑剂对羧基型ACM硫化胶物理性能的影响差异较小,硫化胶在1#油中浸泡后体积变化率差异不大;随着增塑剂用量的增大,硫化胶的硬度和拉伸强度降低,拉断伸长率和压缩永久变形增大,热空气老化后的拉伸强度变化率和拉断伸长率变化率均增大,在1#油中浸泡后体积变化增大,在3#油中浸泡后体积变化减小,脆性温度降低。增塑剂RS735和TP759因其硫化胶的耐热空气老化性能优异而更适合在油、高温工况下使用。

The effects of four plasticizers(RS107,RS735,TP95 and TP759)on the properties of carboxylated acrylate rubber(ACM)were studied.The results showed that,the addition of plasticizer could significantly improve the processability of the carboxylated ACM compound,and the vulcanization was delayed.When the plasticizer dosages were the same,the effects of the four plasticizers on the physical properties of the vulcanizates were similar,and the volume change rates of the vulcanizates after immersion in 1#oil had little difference.With the increase of the plasticizer dosage,the hardness and tensile strength of the vulcanizate decreased,the elongation at break and compression set increased,the change rates of the tensile strength and elongation at break after hot air aging both increased,the volume change after immersion in 1#oil increased,the volume change after immersion in 3#oil decreased,and the brittleness temperature decreased.Plasticizer RS735 and TP759 were more suitable for use in oil and high temperature conditions because of the excellent hot air aging resistance of their vulcanizates.