超声辅助废橡胶低温绿色再生实验及应用,Polymer Engineering and Science

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超声辅助废橡胶低温绿色再生实验及应用
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2023-11-19 , DOI: 10.1002/pen.26560
Yaohua Cheng ₁ , Qiong Liu ₂ , Qianting Wang _{1,

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Affiliation

将传统搅拌机与定制超声波发生器相结合，实现了废旧橡胶的低温绿色再生。通过正交实验，探索超声辅助（LTGRTUA）法低温绿色再生的最佳工艺参数。结果表明，自主研发的再生胶在转子转速70 rpm、再生温度85℃、超声波功率700 W、超声波加载时间240 s的条件下表现出最佳性能。此外，通过测量溶胶分数和脱硫率以及使用Horikx曲线来评估再生橡胶的断键类型。与传统硫化罐高温再生（TVTHTR）法制备的商业再生胶相比，自主开发的再生胶表现出更好的保留了废旧橡胶的主链结构。此外，还进行了不同比例的再生胶替代天然橡胶（NR）的共混实验，用于生产子午线轮胎胎面胶。最终产品的性能测试表明，自主研发的再生胶性能优于市售再生胶，为后续的工业化应用和推广提供了有效的基础。

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Experimental and application of waste rubber low-temperature green regeneration through ultrasound-assisted method

Combining a traditional mixer and a custom-built ultrasonic generator, low-temperature green regeneration of waste rubber was realized. Through orthogonal experiments, the optimal process parameters for the low-temperature green regeneration through the ultrasound-assisted (LTGRTUA) method were explored. Results showed that the self-developed reclaimed rubber exhibited the best performance under the following conditions: rotor speed of 70 rpm, regeneration temperature of 85°C, ultrasonic power of 700 W, and ultrasonic loading time of 240 s. Additionally, the bond-breaking types of the reclaimed rubber were evaluated through the measurements of sol fraction and desulfurization rate, as well as by using the Horikx curve. The self-developed reclaimed rubber showed better retention of the main chain structure of waste rubber compared to the commercially reclaimed rubber which was prepared by the traditional vulcanization tank high-temperature regeneration (TVTHTR) method. Moreover, blending experiments were conducted, in which different proportions of the reclaimed rubber replaced natural rubber (NR) for the purpose of producing tread rubber for radial tires. Performance tests of the final products revealed that the self-developed reclaimed rubber performed better than commercially reclaimed rubber, which provides an effective basis for the subsequent industrial application and promotion.

更新日期：2023-11-19

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