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6581 results about "Paraffin wax" patented technology

Paraffin wax (or petroleum wax) is a soft colorless solid, derived from petroleum, coal or shale oil, that consists of a mixture of hydrocarbon molecules containing between twenty and forty carbon atoms. It is solid at room temperature and begins to melt above approximately 37 °C (99 °F), and its boiling point is above 370 °C (698 °F). Common applications for paraffin wax include lubrication, electrical insulation, and candles; dyed paraffin wax can be made into crayons. It is distinct from kerosene and other petroleum products that are sometimes called paraffin.

Built-up synergetic class-A/B water extinguishing agent series

The invention discloses a built-up synergetic class-A / B water extinguishing agent series. Class-A fires caused by solid substances (such as woods, cottons, wools, linens, paper) and products thereof and class-B fires caused by liquid or melted solids such as gasoline, kerosene, diesel oil, crude oil, methanol, ethanol, asphalt, paraffin waxes and the like can be put out rapidly through the functions such as heat absorption and cooling, diluting and smothering, insulating and covering, suppressing and blocking combustion chains, and the like which are synergetically performed by various extinguishing functional components, and a high-temperature-resistant thermal-insulation and fire-retarding covering layer is formed on the surface of an inflammable matter by various after-combustion functional components so as to achieve the effect of after-combustion resistance. Because the class A / B fires relate to multiple occasions of daily life and production activities, the extinguishing agent disclosed by the invention can be used in the fields of home fire prevention and extinguishing, urban architecture fire prevention and extinguishing, oil depot and gasoline station fire prevention and extinguishing, vehicle and ship fire prevention and extinguishing, forest and grassland fire prevention and extinguishing, mine fire prevention and extinguishing, confined spaces (such as civil air-defense architectures) fire prevention and extinguishing.
Owner:NANJING UNIV OF SCI & TECH

Porous ceramic for electronic cigarette, atomizing core containing porous ceramic and preparation method of atomizing core

The invention relates to the technical field of electronic cigarettes, and in particular, relates to a porous ceramic for an electronic cigarette, an atomizing core containing the porous ceramic and apreparation method of the atomizing core. The porous ceramic for the electronic cigarette is composed of the following components in percentage by mass: 35 to 60 percent of ceramic powder, 5 to 40 percent of a pore forming agent, 5 to 30 percent of a sintering aid and 15 to 35 percent of a glue, wherein the glue is composed of the following components in percentage by mass: 20 to 40 percent of PE, 20 to 40 percent of PP, 1 to 10 percent of PE wax, 15 to 40 percent of paraffin and 1 to 10 percent of stearic acid or oleic acid. Through the mode, the porous ceramic with a uniform structure and adjustable pore diameter and porosity is prepared by adopting an injection molding process, so that the requirements of users on different pore diameters and different porosities of the porous ceramiccan be met; through the specific feeding sequence and an internal mixer, the materials are mixed more uniformly, the forming size is stable and is close to the net size, secondary machining is not needed, forming is easy and automatic, the production efficiency is high, and the production cost is low.
Owner:东莞市陶陶新材料科技有限公司
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