Abstract Thermoplastic vulcanizates (TPVs) are special classes of thermoplastic elastomers, in which dynamic vulcanization the rubber phase takes place during melt mixing with a semicrystalline matrix at elevated temperature. This review article focus on different types from various elastomer and blends that suitable for automotive applications purpose. A detailed study TPVs based polypropylene‐ethylene propylene diene (PP‐EPDM) α‐olefin has been focused their application automobile sector...

Abstract This research article reports, the preparation of thermoplastic vulcanizates (TPVs) and TPV nanocomposites (TPVNs) based on EPDM polypropylene (PP). New generation ultra‐high molecular weight (UHMW‐EPDM) PP with nano‐fillers (nano‐clay nano‐silica) has been studied characterized extensively typically for automotive applications. special type UHM‐EPDM‐based TPVs exhibit superior physico‐mechanical properties over conventional EPDM‐based in presence nano‐fillers, they show even better...

Abstract Elastomeric compound development is a multi‐objective optimization task, and it contains vulcanization packages that crosslink the matrix. The deciding factors for systems are nature of elastomer, service temperature, processing methods vulcanizate properties. Accelerated sulfur organic peroxide examples systems; each has its advantages shortcomings. peroxide‐based system shows high level temperature stability while flexibility inferior to vulcanization. This study fine‐tuning...

Abstract Temperature scanning stress relaxation (TSSR) measurement of peroxide vulcanized polymer blends polypropylene (PP) and ultrahigh molecular‐EPDM (UHM‐EPDM) rubber has been performed to study the thermomechanical behavior thermoplastic vulcanizates (TPVs). Co‐agents play crucial roles in enhancement properties TPVs. Different types co‐agents (Triallyl cyanurate‐ TAC ; N, N‐m‐phenylene‐dimaleimide‐ HVA2 zinc dimethacrylate‐ ZDMA in‐situ formed ZMA ) have explored this work. TSSR shows...

Abstract This study investigates (ZnO)s with different surface features as vulcanization activators in unfilled SBR vulcanizates. ZnO is termed the best activator due to its fast reaction kinetics. A high release of into environment harms marine ecosystems, and most production goes rubber sector; therefore, reducing amount essential. Active, nano functionalized compared conventional matrix; concentration optimized based on curing, mechanical, physical, dispersion analyses. The Arrhenius...

Ionomeric TPEs of XNBR and PA12 have been prepared in presence various zinc salts such as Zinc oxide (ZnO), peroxide (ZnO2) combination (ZnO+ZnO2). Curing study ZnO, ZnO2 (ZnO+ZnO2) depicts a significant difference torque values which suggests the formation both ionic covalent linkages for crosslinked whereas only crosslink takes place ZnO XNBR. Further morphology by scanning electron microscopy (SEM), atomic force (AFM), physicomechanical properties, dynamic mechanical thermal analysis...

Abstract Thermally actuated peroxide crosslinked shape memory polyolefinic blends of EOC and EPDM has been developed. Effect static dynamic vulcanization process on the character pursued in detail. Shape properties study at 60°C reveals that statically vulcanized blend dynamically are superior terms fixity recovery behavior, respectively. Breakage lower percentage crystalline structure gives higher for blend. In a parallel way, shows better stress–strain also. On other hand, degree network...

Abstract For the past few decades, butyl rubber (IIR) and its derivatives have been used primarily in air barrier applications. Recently other synthetic rubbers like hydrogenated acrylonitrile butadiene (HNBR) has attracted attention for properties. A blend of brominated (BIIR) HNBR can be a potential novel material with improved technical features as well excellent processing behavior. In this article, laponite (RD) bentonite (MT) nano‐clays to prepare BIIR‐HNBR based nanocomposites....

The diffusion of sulfur mustard (SM) and oxygen (OM) in polypropylene (PP) biaxial-oriented PP (BOPP) was measured using Fourier transform infrared–attenuated total reflectance (FTIR–ATR) spectroscopy, which allows one to study the liquid through thin polymer films situ. temperature-dependent coefficients OM SM for BOPP are also reported; these good agreement with values obtained by weight gain method. activation energy is determined both methods. polymer–penetrant interaction parameter (K)...

The Ganga is the most important perennial river originating from Gangotri in snow-bound Himalayas about 3,900 m above mean sea level. Gorging a distance of 220 km Himalayas, it enters plain at Hardwar and after meandering braiding over 2,525 through Indo-Gangetic plains, ultimately joins Bay Bengal. course this has been changed due to: (i) subsurface geotectonic movement leading to change slope deltaic subsidence Bengal basin; (ii) changing pattern water discharge with time; (iii) variations...

Abstract An important factor for the preparation of thermoplastic vulcanizates (TPVs) is mixing sequence or technique as it controlling product quality and production rate. The effect different routes sequences on mechanical properties rheological have been studied. Four types pursued ultra‐high molecular weight EPDM (UHMW‐EPDM) master batch has shown maximum prospect over melt blending method. Co‐agent master‐batch sample showed optimum balance between TS %EB other samples. Melt shows...

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 carbon black (CCB) filler. The influence of incorporation CCB filler the CTPV matrix various relevant properties has studied thoroughly. Physico‐mechanical indicate a significant improvement tensile strength, modulus, crosslink density, tear strength together quite good flexibility CTPVs....

Automated PC-based control Log Periodic Dipole Antenna (LPDA) performance of solar burst monitoring in the range 50-300 MHz is presented. The paper describes signal detection by LPDA designed for with very high- performance. Low–frequency radio emission arises atmosphere at levels where events like bursts have been identified. different type are described and illustrated using data received Kalyani their potential use as diagnostics Space Weather discussed.

The examination of the mass spectra as a means identification bis (2-chloroethyl) sulfide and related compounds in range nanogram quantities is reported. Because adverse toxicological properties classified nature such compounds, reported method serves forensic analytical need.

Characteristic average power spectra at different frequencies in the ELF/VLF bands for electromagnetic radiation fields originating from lightning events related to cyclone `Roanu' are presented this paper. Techniques measurement of sferics noise first clarified. As a measuring instrument we have used radio signal receiver recording frequency bands. An overview main function blocks "circuit-like" style is described with special emphasis on default position output switches, waveform input and...