enow.com Web Search

  1. Ads

    related to: polycarbonate conversion rate

Search results

  1. Results from the WOW.Com Content Network
  2. Polycarbonate - Wikipedia

    en.wikipedia.org/wiki/Polycarbonate

    Polycarbonate. Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed. Because of these properties, polycarbonates find many ...

  3. Melt flow index - Wikipedia

    en.wikipedia.org/wiki/Melt_flow_index

    The Melt Flow Index (MFI) is a measure of the ease of flow of the melt of a thermoplastic polymer. It is defined as the mass of polymer, in grams, flowing in ten minutes through a capillary of a specific diameter and length by a pressure applied via prescribed alternative gravimetric weights for alternative prescribed temperatures. [1][2 ...

  4. Step-growth polymerization - Wikipedia

    en.wikipedia.org/wiki/Step-growth_polymerization

    Step-growth polymerization is a random process so we can use statistics to calculate the probability of finding a chain with x-structural units ("x-mer") as a function of time or conversion. Probability that an 'A' functional group has reacted. Probability of finding an 'A' unreacted.

  5. Chain-growth polymerization - Wikipedia

    en.wikipedia.org/wiki/Chain-growth_polymerization

    t. e. Chain-growth polymerization (AE) or chain-growth polymerisation (BE) is a polymerization technique where monomer molecules add onto the active site on a growing polymer chain one at a time. [1] There are a limited number of these active sites at any moment during the polymerization which gives this method its key characteristics.

  6. Crystallization of polymers - Wikipedia

    en.wikipedia.org/wiki/Crystallization_of_polymers

    Crystallization of polymers is a process associated with partial alignment of their molecular chains. These chains fold together and form ordered regions called lamellae, which compose larger spheroidal structures named spherulites. [1][2] Polymers can crystallize upon cooling from melting, mechanical stretching or solvent evaporation.

  7. Moisture vapor transmission rate - Wikipedia

    en.wikipedia.org/wiki/Moisture_vapor...

    Moisture vapor transmission rate (MVTR), also water vapor transmission rate (WVTR), is a measure of the passage of water vapor through a substance. It is a measure of the permeability for vapor barriers. There are many industries where moisture control is critical. Moisture sensitive foods and pharmaceuticals are put in packaging with ...

  1. Ads

    related to: polycarbonate conversion rate