An investigation on mechanical, electrical, and rheological characteristics of ultra‐high molecular weight (UHMW)‐EPDM/PP blends‐based conductive thermoplastic vulcanizates (CTPVs)

Abstract

A new generation conductive thermoplastic vulcanizates (CTPVs) have been developed and characterized in detail, which is based on ultra-high molecular weight (UHMW)-EPDM rubber combined with conductive carbon black (CCB) filler. The influence of incorporation of CCB filler in the CTPV matrix on various relevant properties has been studied thoroughly. Physicomechanical properties indicate a significant improvement in the tensile strength, modulus, crosslink density, and tear strength together with quite good flexibility of the CTPVs. Rheological properties depict excellent processability and material strength (storage-modulus and complex-modulus), and stress relaxation shows a higher relaxation time of the CTPVs over the pristine-TPV. Morphology study (AFM, FESEM, and TEM) reveals very well dispersion of the CCB-filler and droplet type dispersed morphology has been achieved. The study of the electrical properties demonstrates that fair AC conductivity can be achieved for high filler loading. AC impedance analysis also proves the improvement for CTPVs over the pristine TPV. It is well described that due to the incorporation of the CCB-filler, all the properties are improved, and from some of the results amount of CCB-filler can also be optimized.UHMW-EPDM/PP-based conductive TPVs (CTPVs) can be potentially used as a sensitive stretchable conductor for various applications.

Effects of tire‐derived pyrolytic carbon black and pyrolytic heavy oil on the curing and mechanical properties of styrene‐butadiene rubber composites

“…As a vital component of every wheel, tire consumption is anticipated to increase in the coming years, which will hasten the development of waste tire stockpiles 2 . According to a report by the European Tire & Rubber Manufacturers Association (ETRMA), the globe needs to dispose of some 800 million worn tires and the value is supposed to grow by about 2% each year 3 . The need to implement appropriate legislation and regulations for the proper disposal of tire stockpiles has been driven by the inevitable circumstances that have led to the creation of End‐of‐Life Tires (ELTs).…”

Effects of graphene network formation and its correlation with microstructure and mechanical properties in dynamically vulcanized PP/EPDM composites reinforced with few‐layer graphene

“…As a result of ascending usage of TPVs in different applications, realizing their mechanical behavior becomes more substantial and challenging. [1][2][3][4][5][6][7][8][9] The addition of nanofillers into PP/EPDM composite can enhance the properties such as modulus, strength and stiffness. In addition to mechanical properties, an enhancement in preferable characteristics like barrier, thermal, flame retardancy and electrical properties is achieved.…”

“…In recent years, thermoplastic vulcanizes (TPVs) blends of polypropylene (PP) and ethylene propylene diene monomer (EPDM) have always been as one of the most extensively used in industrial applications such as building, industrial market, automobile and aviation industry due to superior mechanical properties, high fracture toughness behavior, simple processability and low cost. As a result of ascending usage of TPVs in different applications, realizing their mechanical behavior becomes more substantial and challenging 1–9 . The addition of nanofillers into PP/EPDM composite can enhance the properties such as modulus, strength and stiffness.…”

Electric field‐assisted preparation of PANI/TPU all‐organic composites with enhanced dielectric permittivity and anisotropic optical properties

“…Among them, all-organic dielectric polymer composites obtained by using organic polymers as fillers is a very effective and promising strategy. [19][20][21] There are two advantages by using organic polymer as fillers: (1) their electrical conductivity can be adjusted over a wide range;…”

“…Among them, all‐organic dielectric polymer composites obtained by using organic polymers as fillers is a very effective and promising strategy. [ 19–21 ] There are two advantages by using organic polymer as fillers: (1) their electrical conductivity can be adjusted over a wide range; (2) the interaction between fillers and matrix is better than inorganic filler/organic polymer‐based composites, which leads to better mechanical properties. [ 5 ] For example, using organic polymers such as copper phthalocyanine, polypyrrole, polyaniline, etc., as fillers to fill the polymer matrix can well maintain the flexibility of the matrix.…”