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The degree of polymerization of polyvinyl acetate is typically 100 to 5000, while its ester groups are sensitive to base hydrolysis and slowly convert PVAc into polyvinyl alcohol and acetic acid.
EVA is used as a cold flow improver for diesel fuel. They are added at the 50-250 ppm level to diesel fuels to inhibit crystallization of waxes which could block fuel filters. [9] EVA is a separator in HEPA filters. EVA can easily be cut from sheets and molded to shape.
Akemi GmbH (stylized as AKEMI) is a company in the chemical industry which is active worldwide. Its headquarters are in Nuremberg in Germany and its core competence is the manufacturing of two-component adhesive systems.
Conformal coatings are typically applied with 25–250 μm [1] thickness on electronic circuitry to protect against moisture and other substances. Coatings can be applied in many ways, including brushing, spraying, dispensing, and dip coating .
A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals, rubber, and plastics. Hermetic seals are essential to the correct ...
At typical coating application temperatures, usually in the range of 180 to 250 °C (356 to 482 °F), the contents of the powder melt and transform to a liquid form. The liquid FBE film wets and flows onto the steel surface on which it is applied, and soon becomes a solid coating by chemical cross-linking, assisted by heat.