Entech TPE Presenting at ANTEC Orlando 2018.

This is the second year in a row that Haikun Xu and Lavon Detweiler have submitted an abstract and given a presentation. This year is especially fitting considering the four-day event is kicking off one of the technical learning tracks with a three-and-one-half hour moderated session about additive manufacturing. One of the key messages from Entech this year is that product, compounding and processing engineers really need to think about micronized rubber powder (MRP) as a performance additive, not a filler.

Wednesday, 5/9 at 11:00 A.M. Reference W10-Thermoplastics Elastomers section moderated by Mukul Kaushik in Room S322 at the Orange County Convention Center, Orlando, FL.




Haikun Xu and Lavon Detweiler

Thermoplastic Elastomer Compounding and Processing, Entech, Inc. Middlebury, IN 46540

Abstract — Thermoplastic elastomers (TPE) including thermoplastic polyolefins (TPO) and thermoplastic vulcanizates (TPV) are promising elastomeric materials for automotive applications such as headlight surrounds, bumper covers, door gaskets, etc. TPEs offer a combination of great thermoplastic processability and outstanding rubbery properties, however, the process of recycling scrap and post-consumer products and reprocessing them into useful products have always been challenging. In addition, tire rubbers have been one of the most problematic sources to recycle, due to their large volume and durability. Innovative and effective methods are critical to reuse the recycled tire rubbers in value-added products other than their traditional use for fuel values. In this study, micron-size rubber powders (MRPs) were fabricated from recycled truck tires in large volume and used as fillers for the twin screw extruder (TSE) compounding of recycled TPOs. TPO was chosen as the base resin for compounding because of its excellent re-processability, good compatibility with the micron-size tire rubbers, and reasonably low cost. A compatibilizer was studied to enhance the uniform incorporation of micro-size rubber powders into the base resins and improve the overall performance of the compounds in a cost-effective way. The chemical structure of the recycled TPOs was confirmed by FTIR, and the thermal stability and compositional analysis of the recycled tire rubbers were characterized by TGA. The physical and mechanical properties (hardness, MFI, tensile, Izod impact, etc) were extensively tested to study the overall performance of the compounds. The surface details of injection molded parts are studied and improved for automotive and commodity applications.

Here is the complete Technical Program for ANTEC 2018.