A sustainable and cost-effective method for recycling vulcanized EPDM in automotive mat applications
摘要
Sustainability is a global concern focused on efficient resource use and waste minimization to protect the environment long-term. Recycling plays a key role, especially in elastomer and plastic product industries. While plastic recycling is well-established, rubber recycling is increasingly being adopted. This study introduces an eco-friendly method to recycle EPDM (Ethylene Propylene Diene Monomer) weatherstrip waste, typically vulcanized (cured) rubber. Traditional devulcanization is costly and time-consuming, requiring external facilities. To address this, a simpler process was used to create crumb rubber, bypassing devulcanization. The crumb rubber was blended with virgin EPDM in various proportions, with 80 phr identified as optimal based on physical properties (only 7% deterioration in tensile strength, 10% in elongation, 10% in abrasion resistance index, & 6 unit raise in hardness) and weathering tests, including weather, ozone, low-temperature, and fire resistance. This innovative approach offers a sustainable, cost-effective solution, reducing environmental impact, material, and transportation costs, while lowering carbon emissions. It represents a significant advancement in rubber recycling, promoting sustainability without major compromises in material performance.
Graphical abstract