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Ageing of HNBR, EPDM and FKM O-rings
HNBR, EPDM and FKM O-rings were aged uncompressed and compressed at 75 °C, 100 °C, 125 °C and 150 °C for up to 1 year.Weiterlesen...
Parameter Optimization of Finite Element Tire Models
Tire models are used for several applications in the field of vehicle dynamics and tire construction.Weiterlesen...
Combined Dielectric (DEA) and Dynamic Mechanical Thermal Analysis (DMTA) in Compression Mode
The design of a new experimental setup that combines dielectric spectroscopy (DEA) with dynamic mechanical thermal analysis (DMTA) to perform simultaneous dielectric and dynamic mechanical measurements is presented here for the first time.Weiterlesen...
Trelleborg acquires Loggers Rubbertechniek and grows within marine applications
Trelleborg has, through its business area Trelleborg Industrial Solutions, signed an agreement and finalized the acquisition of Loggers Rubbertechniek B.V., a Netherlands-based privately owned engineering company that provides specially engineered anti-vibration solutions, principally within marine applications. The company designs and develops solutions that minimize noise and dampen vibrations and shocks, mainly for onboard ship systems. The acquisition strengthens Trelleborg’s antivibration operation within marine applications in Europe.Weiterlesen...
Consequences of less Space and higher Temperatures in the Engine Bay
With the continued trend for ever decreasing space in the engine bay, temperatures continue to rise, placing ever more demanding requirements on the components operating in this environment. One consequence of this is the need for Elastomers capable of ever-greater long-term high temperature resistance. The superiority of high-temperature ACM (HT-ACM) elastomers over traditional ACM & other Acrylic elastomers with respect to heat and aggressive automotive lubricating oil resistance has been demonstrated in many applications including a variety of engine seals, oil pan and valve cover gaskets, hose and air ducts.Weiterlesen...
Effect of Crosslink Type on Tearing - Part II. Carbon Black Filled Natural Rubber Vulcanizates
The tear states and tear energies of carbon black-filled NR vulcanizates with different crosslink structures have been investigated over a large range of temperatures and tear rates.Weiterlesen...
Customized Performance Modification of Special Rubbers Using Ionic Liquids
For the improvement of properties ionic liquids (IL) in different concentrations were incorporated in fluorinated rubber (FPM) and hydrogenated acrylonitrile-butadiene rubber (HNBR). Different types of ILs were used based on imidazolium and pyrrolidinium cations.Weiterlesen...
Technologies for Polymeric Cord/ Rubber Adhesion in Applications
A good adhesion between the rubber of a tire and the reinforcing polymeric cord is crucial for the overall tire performance and safety. Polymeric cords are commonly treated by a resorcinol formaldehyde latex (RFL) coating to obtain the desired adhesion, often in combination with an epoxy coating in order to make the cord surface and the RFL coating compatible.Weiterlesen...
Oilfield Requirements and Drilling Fluid Influence on Elastomers
Operating environments during oil and gas applications compromise elastomer exposure to hydrocarbons and aqueous solutions at temperatures exceeding 150 °C at high pressure. Besides static seals like O-rings oilfield applications of elastomers contain dynamically strained bellows and Moineau motors. Elastomers show physical as well as chemical interaction with drilling liquids, which result in positive or in negative volume swelling caused by elution processes. Furthermore the elastomer network may be attacked chemically. Contact to acids results in embrittlement of hydrated nitrile rubber (HNBR) whereas alkaline solutions cause degradation of fluoro rubbers. This article describes the main functions of additives and reveals some information on the composition of drilling liquids and the effects on elastomer stability.Weiterlesen...
Tire Technology Expo 2016: Innovative Filler Concepts
Raw material mining and processing specialists Quarzwerke Group and its HPF Mineral Engineers division will showcase its development of high performance mineralogical and synthetic fillers. Functional fillers play a crucial role in setting special properties to advanced polymer systems with MICA muscovite and phlogopite reducing mechanical and thermal distortion in polymer systems and finished parts.Weiterlesen...