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[en] This paper presents the Dreamcatcher oil spill technology developed by National Oilwell Varco Canada. The products and services using this technology can save recycled tires from the landfill, which makes the planet a greener place. The products and services in question are those used for remediating and preventing soil and water contamination. The technological products use rubber tires and degrade the rubber into two compounds. The first is the smart crumb, which is a fine rubber crumb used for oil spill adsorption on land. The second is the aqua fiber, a fiber/rubber compound that is used to adsorb oil spills on water. Both are oleophilic (oil attracting) and hydrophobic (water repelling). This allows them to filter hydrocarbons quickly from water. After the smart crumb adsorbs hydrocarbons, it is then used to make asphalt products and the aqua fiber is used to replace sand and gravel in residential and commercial concrete and asphalt respectively.
[en] A smart tire monitoring system uses tire information, such as temperature, pressure, acceleration, force, tire-road friction coefficient, in real time to monitor the driving safety of cars. A vibration energy harvester for a smart tire monitoring system converts the tire dynamic strain energy into electrical energy which is the power source of the wireless sensor module. The self-powered wireless sensor module consists of an electro-magnetic type energy harvester, a power conversion circuit, an acceleration sensor and a radio communication circuit. This research is focused on achieving high energy conversion efficiency, lightweight design, and long durability of the harvester because it is located at the inner surface of tire where extremely high pressure and acceleration exist. The energy harvester was made in a cylindrical shape with a length of 35 mm. The manufactured harvester was 9.4 g, the casing 10.8 g, the battery 2.6 g, the wireless acceleration sensor module 1.1 g, and the power conversion circuit module 1.2 g. So, the total weight of the wireless sensor module was less than 27 g. The monitoring system receives an acceleration signal from the wireless sensor module which is attached to the inner surface of a tire. An operating test of the monitoring system was carried out by using the tire driving test equipment. The average output power of the energy harvester was measured as about 5.7 mW at 60 km/h. The wireless sensor module was operated during about 11700 km (60 km / h * 6.5 h / day * 30 day). The test results showed that the energy harvester has sufficient power to maintain the operation of the wireless sensor module, and the sensor module has a sufficient durability.
[en] A comparison study of new grade epoxidised natural rubber (ENR) containing 37.5 mole % epoxidation (ENR 37.5) with ENR 25/ ENR 50 blend, prepared by physical blending of ENR 25 with ENR 50, was done using truck tyre formulation. The ENR 25 / ENR 50 physical blend exhibited certain similar physical properties to ENR 37.5 even though Dynamic Mechanical Thermal Analyser (DMTA) analysis showed two glass transition temperatures (Tg) in the ENR 25/ ENR 50 vulcanisate. ENR 37.5 and ENR 25 / ENR 50 blend vulcanizates exhibited similar DMTA tan delta (tan Δ) curves at 0deg. C and 60deg. C, indicating potentially comparable wet grip and rolling resistance in 'green tyre' tread. Moreover, the heat build-up property for both vulcanizates is low, which is advantageous for tyre application.
[en] This book introduces the inventions which are unique and interesting. The titles of these are pots which boil very quick and safe, a desk with a pencil case, a scale which is not rusty, a book cover with a pocket, a skate with wax and mop, a seat belt airbag, a desk lamp which can control the light, a desk in the future, a recycling bin for cans, a blackboard eraser which erase very well, a useful crutches, swimming goggles attached convex lens, flower pots using waste tires, toilet paper holder with sawtooth, a brush which washes a flask, improved pump for petroleum.
[en] In recent years, shearography has significantly improved capabilities in the areas of unbond and separation detection in tires. Although shearography has many advantage for quantitative evaluation, the technique remains the problem of quantitative analysis of inside defects, because shearography needs several effective factors including the amount of shearing, shearing direction and induced load, which exist as barrier for the quantitative analysis of inside defects. In this study, the factors were optimized and the size of cracks inside of tire has been quantitatively determined. Since the factors are highly dependent on inspectors skill and also affect the in-situ workability.
[en] Tire sensors are powerful tools to study tire behavior and to evaluate the tire operating state. A laser tire sensor (LTS) is introduced in this paper. It is based on a laser triangulation sensor, which can measure the carcass deflections of a rolling tire. The sensor principle is explained and a special tire sensor module is introduced. The results are shown for several wheel loads and inflation pressures, which have linear influence on both the tire radius mean value and radius amplitude. Results from more complex driving situations are also covered, including soil deformation and aquaplaning. It was possible to observe tire penetration into the soft soil. An aquaplaning study shows significant influence of hydrodynamics forces on tire carcass behavior. Also the influence of inflation pressure on aquaplaning is shown
[en] The contents of this book are lettuce and royal foxglove tree leaves, memory of summer sea, summer vacation of a freak, waste tires and a fishbowl, a spoon and a iron hand, a iron hand and emergency signal light, my friend is Macgyver, a merry cleaning time, Hojin's invention diary. I am a inventor, a happy winter vacation, the best from losing the draw. This book gives a descriptions of the cases of inventions which are made up through unique and brilliant idea.
[en] Single- and bi-solute sorption of organic compounds [1,3-dichlorbenzene (DCB), 1,3-dinitrobenzene (DNB) and 2,4-dichlorophenol (DCP)] on ground tire rubber and its chars was studied. The chars were prepared by pyrolyzing tire rubber at different temperatures (200-800 deg. C). Their surface area, aromaticity and hydrophobicity increase greatly with pyrolytic temperature, and the polymeric phase is partly converted into a condensed phase. The sorption of DNB and DCP increases with pyrolytic temperature and is characterized by a transition from a partition dominant to an adsorption dominant process. However, the sorption of DCB linearly decreases with the pyrolytic temperature. The enhanced adsorption of DNB and DCP on carbonized phase is primarily attributed to nonhydrophobic interactions such as π-π electron-donor-acceptor interactions and/or H bonding. The higher partition of DCB to polymeric phase is attributed to its high hydrophobicity. Competitive sorption between DCB and DCP on the tire chars is highly dependent on dissociation of the latter. - Research highlights: → Tire chars consist of dual sorptive domains, i.e., partition and adsorption. → High hydrophobicity of apolar organic contaminant promotes its partition into polymeric phase. → Polar aromatic contaminants show high adsorption on carbonized phase with specific interactions. → Dissociation of ionzable organic chemical heavily influences its sorption on tire chars. - The partition and adsorption of organic contaminants on waste tire chars are highly dependent on the hydrophobicity, polarity and dissociation of solutes.
[en] Highlights: ► Non-recyclable, hazards, under-utilized waste tyre was converted to useful fuel. ► Design of experiment was used to optimize the process parameters. ► Fuel compatibility for IC engines was tested by standard fuel testing procedures. ► Optimized process parameters were tested and the empirical model validated. - Abstract: Pyrolysis process offers solution to utilize huge quantity of worn out automobile tyres to produce fuel for energy needs. Shredded tyre wastes were subjected to pyrolysis at atmospheric pressure under inert gas atmosphere in a fluidized bed combustion setup. The shredded tyre particle size, the feed rate of the feed stock, and the pyrolysis temperature were varied systematically as per the designed experiment to study their influence on product yield. Maximizing the oil yield and subduing the gas and char yield is the objective to optimize the process parameters. A low pyrolysis temperature of 440 °C with low feed rate increases the residence time in the combustion reactor yielding maximum oil. The physical properties of raw pyrolysis oil, distilled oil and the evolved gases were done to find its suitability to utilize them as alternatives to the conventional fuels