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  2. Kevlar - Wikipedia

    en.wikipedia.org/wiki/Kevlar

    Kevlar is used to manufacture gloves, sleeves, jackets, chaps and other articles of clothing [27] designed to protect users from cuts, abrasions and heat. Kevlar-based protective gear is often considerably lighter and thinner than equivalent gear made of more traditional materials. [26] Kevlar is a very popular material for racing canoes.

  3. Liquid-crystal polymer - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_polymer

    Liquid-crystal polymers are present in melted/liquid or solid form. [7] In solid form, the main example of lyotropic LCPs is the commercial aramid known as Kevlar . The chemical structure of this aramid consists of linearly substituted aromatic rings linked by amide groups.

  4. Metallic bonding - Wikipedia

    en.wikipedia.org/wiki/Metallic_bonding

    If an element partakes, its peaks tend to be skewed. Some intermetallic materials, e.g., do exhibit metal clusters reminiscent of molecules; and these compounds are more a topic of chemistry than of metallurgy. The formation of the clusters could be seen as a way to 'condense out' (localize) the electron-deficient bonding into bonds of a more ...

  5. Network covalent bonding - Wikipedia

    en.wikipedia.org/wiki/Network_covalent_bonding

    However, network solids with delocalized pi bonds (e.g. graphite) or dopants can exhibit metal-like conductivity. Liquid-phase electrical conductivity: Low, as the macromolecule consists of neutral atoms, meaning that melting does not free up any new charge carriers (as it would for an ionic compound).

  6. Properties of metals, metalloids and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Properties_of_metals...

    [citation needed] Diamond is the best natural conductor of heat; it even feels cold to the touch. Its thermal conductivity (2,200 W/m•K) is five times greater than the most conductive metal (Ag at 429); 300 times higher than the least conductive metal (Pu at 6.74); and nearly 4,000 times that of water (0.58) and 100,000 times that of air (0. ...

  7. Aramid - Wikipedia

    en.wikipedia.org/wiki/Aramid

    In 1973, DuPont was the first company to introduce a para-aramid fiber, calling it Kevlar; this remains one of the best-known [citation needed] para-aramids and/or aramids. In 1978, Akzo introduced a similar fiber with roughly the same chemical structure calling it Twaron. Due to earlier patents on the production process, Akzo and DuPont ...

  8. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    *The P Conductivity is the conductivity of polycrystalline Tin. TPRC Tin is well annealed 99.999+% pure white tin with residual electrical resistivity ρ 0 =0.000120, 0.0001272 & 0.000133 μ Ω cm respectively for the single crystal along directions perpendicular ⊥ {\displaystyle \perp } and parallel ∥ {\displaystyle \parallel } to the c ...

  9. Liquid Armor - Wikipedia

    en.wikipedia.org/wiki/Liquid_Armor

    Liquid armour is a material under research by defense institutions and universities around the world including the United States Army Research Laboratory (ARL). [ 1 ] [ 2 ] [ 3 ] Some of the earliest research in this area was performed at Massachusetts Institute of Technology [ 4 ] and University of Delaware [ 5 ] in 2003.