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Development of a Rubber Recycling Process Based on a Single-Component Interfacial Adhesive
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2021-09-21 , DOI: 10.1021/acsapm.0c01343 Michelle A. Calabrese 1 , Wui Yarn Chan 1 , Sarah H. M. Av-Ron 1 , Bradley D. Olsen 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2021-09-21 , DOI: 10.1021/acsapm.0c01343 Michelle A. Calabrese 1 , Wui Yarn Chan 1 , Sarah H. M. Av-Ron 1 , Bradley D. Olsen 1
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A simple and cost-effective adhesive-based rubber recycling process was designed as an alternative to devulcanization. Interfacial bonding between vulcanized and virgin rubbers is improved by incorporating adhesives and coating processes during rubber reblending and reducing interfacial defects that cause premature failure. In flat laminates, the bond strength between vulcanized and virgin materials doubles when a vulcanizing fluid and thin adhesive layer are introduced. These components are combined into single-component adhesives (SCAs), which improve bond strength sixfold over no treatment, using half the raw material as the multilayer adhesive. When SCAs are coated onto vulcanized rubber particles prior to reblending, the best rubbers exhibit nearly 50% increases in mechanical strength and toughness vs the untreated control and statistically identical extensibility; all treatments improved mechanical strength. This simple, inexpensive, and scalable process can be implemented with one step beyond standard reblending and curing, providing a promising alternative to devulcanization for polymer recycling.
中文翻译：
基于单组分界面胶的橡胶回收工艺开发
一种简单且具有成本效益的基于粘合剂的橡胶回收工艺被设计为脱硫的替代方案。通过在橡胶再混合过程中加入粘合剂和涂层工艺并减少导致过早失效的界面缺陷，可以改善硫化橡胶和原始橡胶之间的界面粘合。在平面层压板中，当引入硫化液和薄粘合剂层时，硫化材料和原始材料之间的粘合强度加倍。这些组分被组合成单组分粘合剂 (SCA)，与未处理相比，粘合强度提高了六倍，使用一半的原材料作为多层粘合剂。在重新混合之前将 SCA 涂覆到硫化橡胶颗粒上时，与未经处理的对照相比，最好的橡胶的机械强度和韧性增加了近 50%，并且在统计上相同的延展性；所有处理都提高了机械强度。这种简单、廉价且可扩展的工艺可以在标准再混合和固化之外的一个步骤中实现，为聚合物回收提供了一种有前景的脱硫替代方案。
更新日期：2021-10-08
中文翻译：
基于单组分界面胶的橡胶回收工艺开发
一种简单且具有成本效益的基于粘合剂的橡胶回收工艺被设计为脱硫的替代方案。通过在橡胶再混合过程中加入粘合剂和涂层工艺并减少导致过早失效的界面缺陷，可以改善硫化橡胶和原始橡胶之间的界面粘合。在平面层压板中，当引入硫化液和薄粘合剂层时，硫化材料和原始材料之间的粘合强度加倍。这些组分被组合成单组分粘合剂 (SCA)，与未处理相比，粘合强度提高了六倍，使用一半的原材料作为多层粘合剂。在重新混合之前将 SCA 涂覆到硫化橡胶颗粒上时，与未经处理的对照相比，最好的橡胶的机械强度和韧性增加了近 50%，并且在统计上相同的延展性；所有处理都提高了机械强度。这种简单、廉价且可扩展的工艺可以在标准再混合和固化之外的一个步骤中实现，为聚合物回收提供了一种有前景的脱硫替代方案。
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