Tuesday, December 1, 2020

Acrylics

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Acrylic fabric is made with plastic threads. The plastic threads are made of a man made polymer fiber created from fossil fuels through a chemical process. Acrylic fabric is made in a way similar to the production of polyamide fabric and polyester fabric.

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Ivories

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Ivory is a very durable material that is not easily damaged or destroyed; it will not burn and is very little affected by immersion in water. Ivory is similar to a hardwood in some of its properties. It is quite dense, it polishes beautifully, and it is easily worked with wood working tools.

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Wednesday, November 25, 2020

Fullerites Carbons

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Carbon fullerenes can be formed by condensation of carbon vapor. Fullerenes were first produced by vaporizing solid graphite disk samples in a high-density helium flow via laser ablation and later by evaporating graphite electrodes via electric arc discharge into helium at sub atmospheric pressure. However, scale-up of these processes has proven difficult.

For more: http://www.globalepisteme.org/Conference/material-science-conference

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Carbon Fibers

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Carbon Fiber is a polymer and is sometimes known as graphite fiber. It is a very strong material that is also very lightweight. Carbon fiber is five-times stronger than steel and twice as stiff. Carbon fiber is composed of carbon atoms bonded together to form a long chain. The fibers are extremely stiff, strong, and light, and are used in many processes to create excellent building materials. Carbon fibers have several advantages including high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion. These properties have made carbon fiber very popular in aerospace, civil engineering, military, and motorsports, along with other competition sports. However, they are relatively expensive when compared with similar fibers, such as glass fibers or plastic fibers.

For more: http://www.globalepisteme.org/Conference/material-science-conference

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Saturday, November 21, 2020

Whisker Toughening

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Whisker reinforcement of ceramic and glass materials lead to improved toughness along with other mechanical properties. The most significant toughening mechanisms in whisker reinforced ceramics are crack bridging, whisker pullout, and crack deflection, according to a large number of theoretical and experimental studies. Important parameters in whisker toughening are whisker volume fraction, pullout length, whisker strength, and whisker-matrix compatibility. Depending on the whisker-matrix combination selected, limitations may arise at high temperatures due to oxidation, chemical reaction, and creep.

For more: http://www.globalepisteme.org/Conference/material-science-conference

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Fibrous Ceramics

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Fibrous-ceramic composite tiles have been invented to afford combinations of thermal-insulation and mechanical properties superior to those attainable by making tiles of fibrous ceramics alone or aerogels alone. These lightweight tiles can be tailored to a variety of applications that range from insulating cryogenic tanks to protecting spacecraft against reentry heating.

For more: http://www.globalepisteme.org/Conference/material-science-conference

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Friday, November 20, 2020

Radiation Effects

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Radiation can be beneficial to a living organism if it affects only sick or harmful cells. When it starts to touch healthy cells. The study of the way in which exposure to radiation can affect living matter lies at the boundary of physics and biology. To predict the effect of radiation on a person would require at least the knowledge of the exact doses of radioactivity to which each of his organs is subjected. This information is rarely available, even more when the effect occurs years after an exposure, which is the general case. It is then impossible to link the effect with this bygone exposure since the effect may often be attributed to many other causes.

For more: http://www.globalepisteme.org/Conference/material-science-conference

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