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  2. Beta cloth - Wikipedia

    en.wikipedia.org/wiki/Beta_cloth

    Beta cloth is a type of fireproof PTFE impregnated silica fiber cloth used in the manufacture of Apollo/Skylab A7L space suits, the Apollo Thermal Micrometeoroid Garment, the McDivitt Purse, [1] and in other specialized applications. Beta cloth consists of fine woven silica fiber, similar to glass fiber. The resulting fabric does not burn, and ...

  3. Silica gel - Wikipedia

    en.wikipedia.org/wiki/Silica_gel

    Colloidal silica gel with light opalescence. Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may contain water or some other liquids, or may be filled by gas or vacuum.

  4. Silica fiber - Wikipedia

    en.wikipedia.org/wiki/Silica_fiber

    Silica fibers are fibers made of sodium silicate (water glass). They are used in heat protection (including asbestos substitution) and in packings and compensators. They can be made such that they are substantially free from non- alkali metal compounds.

  5. Quartz fiber - Wikipedia

    en.wikipedia.org/wiki/Quartz_fiber

    The fiber can be weaved into a cloth ("quartz cloth", "silica cloth"), or chopped to a uniform length. [15] Three-dimensional quartz phenolic is an example of such a material. See also

  6. Sodium silicate - Wikipedia

    en.wikipedia.org/wiki/Sodium_silicate

    Method 1 requires passing carbon dioxide gas through the mixture of sand and sodium silicate in the sand molding box or core box. The carbon dioxide reacts with the sodium silicate to form solid silica gel and sodium carbonate. [citation needed] This provides adequate strength to remove the now hardened sand shape from the forming tool ...

  7. Silicon dioxide - Wikipedia

    en.wikipedia.org/wiki/Silicon_dioxide

    Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO 2, commonly found in nature as quartz. [5] [6] In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant families of materials, existing as a compound of several minerals and as a

  8. Aerogel - Wikipedia

    en.wikipedia.org/wiki/Aerogel

    The lowest-density silica nanofoam weighs 1,000 g/m 3, [59] which is the evacuated version of the record-aerogel of 1,900 g/m 3. [60] The density of air is 1,200 g/m 3 (at 20 °C and 1 atm). [61] The silica solidifies into three-dimensional, intertwined clusters that make up only 3% of the volume. Conduction through the solid is therefore very low.

  9. Glass fiber - Wikipedia

    en.wikipedia.org/wiki/Glass_fiber

    Although pure silica is a perfectly viable glass and glass fiber, it must be worked with at very high temperatures, which is a drawback unless its specific chemical properties are needed. It is usual to introduce impurities into the glass in the form of other materials to lower its working temperature.

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