Plasticization Effect of Bio-Based Plasticizers from Soybean Oil for Tire Tread Rubber
Plasticization Effect of Bio-Based Plasticizers from Soybean Oil for Tire Tread Rubber
复制标题
大豆油生物基增塑剂对轮胎胎面胶的增塑效果
DOI：
10.3390/polym12030623
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发表时间：
2020-03-01
期刊：
影响因子：
5
通讯作者：
Zhang, Liqun
中科院分区：
文献类型：
--
作者：
Xu, Haoshu;Fan, Tao;Zhang, Liqun
以大豆油（SO）和硫磺为原料合成改性大豆油（MSO），目的是减少SO中的双键数量，避免对橡胶的交联密度和力学性能的不利影响。然后用不同重量百分比的硫磺改性的MSO用于硫化轮胎胎面胶（TR）。结果表明，MSO增塑橡胶的交联密度和模量比SO增塑TR有明显提高。6%硫磺改性的MSO（MSO-6%）对TR的增塑效果最好，因此，通过调节MSO-6%的添加量，进一步研究了MSO-6%对TR的增塑效果。研究了不同MSO-6%增塑TR的门尼粘度、Payne效应、力学性能，考察了MSO-6%增塑TR的增塑效果。在增塑剂添加量相同的情况下，比较了MSO-6%与常用芳烃类增塑剂（AO）的增塑效果，确定了MSO在轮胎胎面胶中的潜在应用。结果表明，MSO对TR的增塑作用与AO相似。更重要的是，MSO-6%增塑橡胶的耐老化性能和耐磨性能优于AO增塑橡胶。因此，MSO-6%是一种很有前途的胎面胶生物基增塑剂。
Modified soybean oil (MSO) is synthesized from soybean oil (SO) and sulfur, aiming to reduce the double bond quantity of SO and avoid harmful effects on the crosslink density and mechanical properties of rubber. MSO modified with different weight percentages of sulfur is then used to plasticize tire tread rubber (TR). It is found that the crosslink density and modulus of MSO- plasticized rubber are significantly improved compared with that of SO-plasticized TR. MSO modified with 6 wt % sulfur (MSO-6%) exhibits the best plasticization effect on TR, thus, the plasticization effect of MSO-6% on TR was further studied by adjusting its additive content. Thereafter, the Mooney viscosity, Payne effect, mechanical property of different amount of MSO-6% plasticized TR are studied to investigate their plasticization effect. At the same additive content of plasticizer, the plasticization effect of MSO-6% and a commonly used aromatic hydrocarbon plasticizer (AO) is compared to determine the potential application of MSO on tire tread rubber. It is found MSO shows similar plasticization effect on TR compared with AO. More important, the aging resistance property and wear resistance property of MSO-6% plasticized rubber are better than those of AO-plasticized rubber. Therefore, MSO-6% is a promising bio-based plasticizer for tire tread rubber.