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Different structure and chemical composition of the insulating materials of medium voltage XLPE cables lead to various dielectric responses of new (unaged) cables and, therefore, can lead to problems in the diagnosis in the case of water tree aged medium voltage cables.
Cables appears to be primarily involved in cell cycle regulation and cell proliferation.
Cell phone related road traumas are avoidable.
A few measurements on oil-paper insulated cables suggest a yet to be explored potential application to the diagnostic testing of cables.
Proceedings ArticleDOI
M. Abou-Dakka, A. Bulinski, S.S. Bamji 
24 Jul 2011
10 Citations
Comparing the QP characteristics of miniature cables with those of cables in the field could also help to assess the degree of insulation aging.
Probably reinforced amorphous EP rubber insulated cables are expected to be more stable in wet locations than unfilled XLPE insulated cables.
The obtained results demonstrate the most economical level of disassembly for each cell phone and the best EOL options for each resultant module.
Although the cables investigated are spaceflight cables, the method can be applied to any stranded cable for which the constituent material properties can be determined.

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What are the typical disposal methods for shoe production waste?
4 answers
Typical disposal methods for shoe production waste include efficient waste disposal devices with sterilization boxes for incineration and recycling of raw materials. Another method involves crushing waste shoes, mixing them with straw, cracking them in a furnace with vapor, and purifying the gas-liquid mixture for combustible gas and waste liquid recovery. Additionally, a recycling device for sole rubber waste involves cutting, preheating, softening, pressing, and recycling the rubber waste for further use in production. Waste disposal devices with foot pedals are also utilized, where the lid opens and closes based on the pedal position for convenient waste disposal. These methods ensure efficient waste management, resourcefulness, and environmental protection in the shoe production industry.
What are the advantages and disadvantages of paper packaging?
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Paper packaging offers advantages such as ease of raw material sourcing, low cost, high strength-to-weight ratio, and eco-friendly properties. However, traditional paper formats lack sufficient barrier performance, potentially reducing product shelf-stability and increasing food wastage. To address this, research has explored incorporating additives like enzymatically polymerized microcrystalline glucan (MCG) into natural rubber coatings for improved barrier properties in paper packaging. Additionally, the use of polyvinyl alcohol-based polymer coatings in paper packaging can provide moisture resistance, but may have limitations due to poor water resistance. Overall, while paper packaging is environmentally friendly and cost-effective, advancements in barrier technologies are crucial to enhance its performance in protecting food products and reducing waste.
What are some way to reycle rubber ?
5 answers
Rubber recycling methods include various approaches such as pre-treating vulcanized ground rubber to prevent additional crosslinking and enhance bonding with fresh rubber compound. Another method involves grinding rubber, drying it in a heated blender, compressing, extruding, and producing recycled rubber products. Additionally, a method for recycling waste rubber involves desulfurization by adding iron and titanium dioxide powders, heating under microwave conditions, and recovering rubber powder, significantly improving desulfurization effects. Furthermore, a method for recycling waste rubber includes rubber powder preparation and deep processing, solving issues related to particle size and improving material performance. Lastly, a green strategy introduces exchangeable acetal bonds into chemically cross-linked rubber networks, allowing for malleable and thermal reprocessing abilities and closed-loop chemical recycling of rubber products.
Is voltage stabilizer required for dishwasher?
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Yes, a voltage stabilizer is beneficial for a dishwasher to ensure safe and efficient operation. Voltage fluctuations, common in electrical supply systems like those in Myanmar, can lead to malfunctions and damage in appliances, including dishwashers. Automatic voltage stabilizers, equipped with control circuits and sensing units, help maintain a constant output voltage within the required range, protecting the dishwasher from potential harm caused by voltage variations. These stabilizers use electronic circuits and sometimes servo-controlled motors to regulate the voltage supplied to the appliance, ensuring it operates within the optimal voltage range of around 220VAC. By utilizing such stabilizers, the dishwasher can function reliably and efficiently, extending its lifespan and preventing damage due to inconsistent voltage levels.
What are the common chemicals used in the production of elastomers?
4 answers
The production of elastomers involves a variety of chemicals, each serving specific roles in the synthesis and curing processes to achieve the desired physical and mechanical properties. Polyol components, including polyether carbonate polyols containing carbon-carbon double bonds, are crucial in the production of polyurethane-containing elastomers, reacting with isocyanate components that contain NCO groups in the presence of free-radical initiators like peroxides. Actinic radiation curable compositions, such as urethane (meth)acrylate, allophanate urethane (meth)acrylate, or lactone-containing (meth)acrylate, are applied and cured using ultraviolet radiation to produce elastomers. Polyisocyanates mixed with polyamines, optionally alongside amine chain extenders, polyols, and auxiliaries or additives, are used in the preparation of polyurea elastomers. Thermoset elastomer compositions may include an ambient temperature liquid epoxy-terminated prepolymer formed by reacting a polyoxyalkyleneamine with an excess of epoxide, cured with a curing agent comprising at least one amine or polyamine. Natural sources like castor oil and/or ricinoleic acid estolides, combined with a polyester formed from an epoxidized vegetable oil and a polycarboxylic acid, optionally with a peroxide initiator, are used to form elastomers with comparable properties to conventional petroleum-based elastomers. Metallocene compounds or π complex compounds are employed as catalysts in the (co)polymerization of monomers such as C2-C8-α-olefins and C4-C15-diolefins to prepare elastomers. The synthesis of polyurethane elastomers involves reacting an organic diisocyanate with a polyol, specifically a polyether carbonate polyol, to form an NCO-terminated prepolymer, which is then reacted with chain extenders and/or cross-linking agents. Supramolecular elastomers are synthesized from vegetable oil materials through epoxidation followed by reaction with adipic acid and diethylenetriamine (DETA), indicating the use of formic acid, hydrogen peroxide, and urea in their production. These chemicals collectively contribute to the diverse properties and applications of elastomers in various industries.
What are the safety precautions that should be taken when using shoe eraser?
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When using a shoe eraser, several safety precautions should be considered. Firstly, ensure that the device is operated according to its design, whether it involves manual operationor a motorized system. Secondly, maintain proper control over the cleaning process to prevent accidents, especially when using moving parts like brushes and rollers. Additionally, for devices that emit heat like laser cleaning units, it is crucial to follow safety guidelines to avoid any potential hazards. Lastly, when storing the shoe cleaning device, make sure it is securely covered or stored away to prevent any accidental contact or misuse. By adhering to these safety measures, users can effectively clean their shoes while minimizing risks.
What are the current methods used to treat synthetic rubber industry wastewater?
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The treatment of synthetic rubber industry wastewater employs a variety of methods to address the complex mix of pollutants it contains. Recent advances have focused on biological processes, membrane technologies, coagulation-flocculation, advanced oxidation processes, and integrated methods that combine these processes to enhance treatment efficiency and sustainability. Membrane technologies have emerged as a key element in wastewater treatment due to their low energy consumption, ease of use, and selective permeability. Innovations in this area include the development of polysulfone membrane composites modified with silica and graphene oxide nanoparticles, which have shown significant improvements in reducing membrane fouling and enhancing pollutant removal efficiency. Similarly, polyethersulfone (PES) nanohybrid membranes incorporating ZnO nanoparticles and reduced graphene oxide have demonstrated superior performance in pollutant reduction and flux recovery, indicating their potential for high-organic content wastewater treatment. Biological treatment methods, such as the use of sequential batch reactors (SBR), have been explored for their effectiveness in degrading specific contaminants like triclosan, a common disinfectant that has seen increased usage. These methods, however, may require subsequent tertiary treatments such as ultrafiltration, adsorption, or advanced oxidation processes to meet discharge standards. Root Zone Technology (RZT) represents a natural and effective approach to treating industrial effluents, utilizing layers of aggregates, charcoal, sand, and planted filter beds to achieve significant pollutant removal. Additionally, the use of iron (II) sulphate heptahydrate waste as a coagulant has shown promising results in removing ammonia, COD, BOD, and suspended solids from rubber processing effluent, offering a cost-effective and environmentally friendly alternative. Advanced oxidation processes and the incorporation of hydrophilic additives in membrane fabrication have also been investigated to improve treatment outcomes and membrane performance, respectively. Moreover, the enhancement of membrane permeability and rejection capabilities through the blending of membranes with specific additives, such as Barium Chloride, has been shown to improve dye separation efficiency from industrial wastewater. In summary, the treatment of synthetic rubber industry wastewater is multifaceted, incorporating a range of technologies and methods that are continually being developed and optimized to address the environmental challenges posed by industrial effluents.
What are other adhesives?
4 answers
Various types of adhesives are utilized for bonding different materials. Adhesives recommended for aluminum and alloys include modified epoxies, phenolics, acrylics, cyanoacrylates, silicone rubbers, and vinyl plastisols. Gypsum products can be bonded using adhesives containing heavy calcium carbonate, bean gum, hydroxypropyl methyl cellulose, talc, and pre-gelatinized starch. Adhesives have become increasingly vital in daily life, with significant advancements in materials and bonding technology over the years. Adhesives are complex mixtures with various constituents like binders, solvents, hardeners, and fillers, classified based on function, composition, and application method. Dental prostheses adhesives consist of glycerin, propylene glycol, water, polyvinylpyrrolidone, carboxymethylcellulose, grapefruit pomace extract, menthol, and benzalkonium chloride.
What are the current research gaps in understanding the use of natural rubber for structural cracks in concrete?
4 answers
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5 answers
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What is the crepe from latex?
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Crepe from latex refers to a material produced by incorporating organoclay (OC) into natural rubber (NR) latex crepe. The addition of OC affects the raw rubber properties, such as Initial Plasticity (Po) and Plasticity Retention Index (PRI), leading to thermo-oxidative degradation. Iron contamination in the processing water can catalyze thermo-oxidative degradation in crepe rubber, impacting its oxidative stability. Additionally, crepe paper substrates can be impregnated with inorganic fillers in a polymer latex matrix, enhancing their properties. The crepe paper itself can be made from long-fiber wood pulp, chemical fibers, and coating latex, resulting in a material with excellent adhesivity and resistance to various factors like heat, water, and solvents. Adhesive compositions used in creping nonwoven webs can contain specific monomer mixtures to improve their performance.