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首页> 外文期刊>Journal of Applied Polymer Science >Comparative analysis of ultrasonically devulcanized unfilled SBR, NR, and EPDM rubbers
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Comparative analysis of ultrasonically devulcanized unfilled SBR, NR, and EPDM rubbers

机译：超声硫化未填充SBR，NR和EPDM橡胶的对比分析

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The comparative study of the continuous ultrasonic devulcanization of various unfilled rubbers [natural rubber, styrene-butadiene rubber (SBR), ethylene-propylene-diene rubber (EPDM)] is carried out by means of a ultrasonic reactor. The power consumption, gel fraction, crosslink density, cure behavior, and physical properties of devulcanized rubbers were measured. The glass transition temperatures of virgin, vulcanized, and devulcanized rubbers were determined in order to characterize the difference in the mobility of rubber molecules for each rubber before and after devulcanization. Thermogravimetric analysis was also used to determine thermal stability of the various rubbers. A unique correlation between gel fraction and crosslink density indicated significant differences in the efficiency of devulcanization of various rubbers. Under certain devulcanization conditions, the mechanical properties of revulcanized SBR and EPDM rubbers were found to improve compared to those of the original rubbers. (C) 2003 Wiley Periodicals, Inc. [References: 30]
机译：通过超声反应器对各种未填充橡胶[天然橡胶，丁苯橡胶（SBR），乙烯-丙烯-二烯橡胶（EPDM）]进行连续超声脱硫的比较研究。测量了脱硫橡胶的功耗，凝胶分数，交联密度，硫化行为和物理性能。确定原始橡胶，硫化橡胶和脱硫橡胶的玻璃化转变温度，以表征脱硫前后每种橡胶的橡胶分子迁移率的差异。热重分析还用于确定各种橡胶的热稳定性。凝胶分数和交联密度之间的独特相关性表明，各种橡胶的脱硫效率存在显着差异。在某些脱硫条件下，发现与原始橡胶相比，硫化SBR和EPDM橡胶的机械性能有所改善。 （C）2003 Wiley Periodicals，Inc. [参考：30]

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