Rubber, Plastics & Polyurethanes

October 2020

Role of Hybrid Coagent on Performance of Silica-filled HNBR treated with TESPT & VTEO Silanes
Date: 29 October 2020 (Thursday)
Time: 4.00 pm (Thailand) , ~60 Min
Speaker: Dr. Manuchet Nillawong
Language: English
Registration Fee: Free
To Register: Registration Form
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Description: This webinar presents about research work, which aims to study the combination of coagents including trimethylolpropane trimethacrylate (TRIM) and zinc diacrylate (ZDA) coagent hybrids. Silica-filled HNBR compounds were prepared, and modified with 2 different silanes, namely, mercapto silane (TESPT) and vinyl silane (VTEO). Various ratios of TRIM/ZDA were used simultaneously in silane-modified silica-filled HNBR. Viscoelastic and cure properties of HNBR compounds and vulcanizates as influenced by coagent hybrid and silane type are investigated. The correlation of rubber-filler interaction, cure properties, viscoelastic behaviors, and mechanical performance are to be discussed.
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November 2020

Next Generation TPV Nanocomposites Technology for Automotive Industry Applications
Date: 02 November 2020 (Monday)
Time: 4.00 pm (India) , ~60 Min
Speaker: Asit Baran Bhattacharya
Dr. Kinsuk Naskar
Language: English
Registration Fee: Free
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Description: This research work reports, the preparation of TPV and TPV nanocomposites (TPVNs) based on EPDM and Polypropylene (PP). New generation ultra-high molecular weight EPDM (UHM-EPDM) and PP with nano-fillers (nano-clay and nano-silica) and has been studied and characterized extensively typically for automotive applications. This special type of UHM-EPDM based TPVs exhibit superior physico-mechanical properties over conventional EPDM based TPVs and in the presence of nano-fillers, they show even better physical properties. Tensile strength, elongation at break and Modulus all are improved for nano filled TPV composites. These newly developed TPVs can be used as potential candidates for application in the automotive sector.
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Adhesion Improvement between Natural Rubber and Ethylene Methylacrylate Copolymer by Surface Chlorination
Date: 27 November 2020 (Friday)
Time: 2.00 pm (Thailand) , ~60 Min
Speaker: Dr. Sombat Thanawan
Dr. Siriwat Radabutra
Dr.Taweechai Amornsakchai
Language: English
Registration Fee: Free
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Description: Vulcanized natural rubber is chlorinated using trichloroisocyanuric acid 2% w/v for 0 to 30 min. Surface roughness and stiffness increase with chlorination time but degree of chlorination reaches saturation at 10 min. T-peel test with ethylene methylacrylate copolymer shows maximum peel strength at 1 min. This supposes to be governed by allyl chloride to methyl acrylate linkage, and weak boundary layer from stiffness.
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December 2020

Natural Rubber Composites for Motion Sensor and Future Applications
Date: 02 December 2020 (Wednesday)
Time: 4.00 pm (Thailand) , ~60 Min
Speaker: Dr. Yeampon Nakaramontri
Language: English
Registration Fee: Free
To Register: Registration Form
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Description: According to the patent landscape and the rubber industries in Thailand, natural rubber (NR) is becoming one of the most sustainable materials in the concepts of automotive tires and transportation, medical electrode and soft robotics. Thus, we are producing applications relating to the recycle of tires and belt wastes, bio-thermoplastic elastomer, electroactive drug release, self-healing material and sensor monitoring of soft robotics. For the motion sensor, unmodified-NR and modified-NR composites filled with carbon-based fillers were prepared in order to examine the effect of non-rubber component and polarity in rubber matrix to the sensor properties. The relative resistances during extension were determined under static (stepwise) and dynamic (cycling) deformation of the composites. It was found that ENR-CNT/CB exhibited mechanical properties superior to NR-CNT/CB and IR-CNT/CB. This is mainly attributed to the chemical linkages of C-O-C covalent bonding among polar functional groups on ENR molecules and CNT/CB surfaces. This helps also the recovery of resistivity to the original value after 20 extension cycles. After 10,000 cycles, the resistivity had changed by only 2 orders of magnitude. Thus, ENR-CNT/CB composites can serve in sensors for health monitoring, motion sensors, and other related products, being cost-effective and easy-to-process materials.

Impact of Silane Coupling Agent in a Silica-based Rubber Compound Development
Date: 19 December 2020 (Saturday)
Time: 4.30 pm (India) , ~90 Min
Speaker: M. Hamid Iftikhar
Language: English
Registration Fee: FREE
To Register: Registration Form
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Description: The use of Silane Coupling Agent(s) is quite critical to the rubber compounds containing silica. Though the trend of using silica in various elastomer-recipes has been on the rise during the recent past because of the multiple advantages which include, but are not limited to, performance as well as service life of the finished product, green (environment-friendly) products, low rolling resistance (in case of tyres production) etc. The use of silica in an elastomer recipe, however, is coupled with various issues like the formation of agglomerates & consequently the stress-concentrated areas, adsorption of cure accelerators on silica surface, disturbance in the crosslink density of the vulcanizate etc. All these cons can be overcome by using SCAs in the elastomer recipe based on silica. This webinar aims to discuss the usage of SCA in a silica based recipe in order to achieve the said properties enhancement. A comparative study, based on the practical trials, will also be shared as on what practically happens if we do not use SCA in a silica based recipe. Lastly, a case study will also be presented.
Speaker: M. Hamid Iftikhar. Polymer Engineer by profession. Has also completed the Post Graduate Diploma in Polymer Engineering. Around 15 years’ experience in rubber compounding for tyre industry. Currently working as Senior Manager (Compounding & Development) in Panther Tyres Limited which is the leading tyres & inner-tubes manufacturing industry in Pakistan.