Sökning: "polymer hydrogen permeation"

Hittade 2 uppsatser innehållade orden polymer hydrogen permeation.

1. 1. SFEER Hydrogen Permeation : Finding a suitable coating for the PA6 liner

   Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap

   Författare :Elsa Friis; Klara Karlsson; Rebecka Damgren; Emma Åkesson; Malin Johansson; [2023]
   Nyckelord :Hydrogen permeation; PA6; coating; hydrogen permeation barrier; polymer hydrogen permeation; permeation; protective coating; hydrogen embrittlement;

   Sammanfattning : Water Stuff & Sun are developing a hydrogen battery based on a technology called SFEER’s. The SFEER’s are spherical high-pressure gas storage containers that are the size of a tennis ball. They consist of a carbon fiber-shell that is lined on the inside with a polymer called PA6. LÄS MER

3. 2. Study of ethylene/propylene polymerization, using a 4th generation Ziegler-Natta catalyst: Effect of external donor and feed ratio on polymerization

   Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för kemivetenskap (CHE)

   Författare :Seyedeh Shafagh Dehghani; [2012]
   Nyckelord :Ziegler-Natta catalysts; Electron Donor; Copolymerization; Polyolefins;

   Sammanfattning : A fourth generation multiple site Ziegler-Natta catalyst was used to synthesize ethylene and propylene homo-and copolymers in the presence of hydrogen. This type of catalysts produce polymers with broader molecular weight distribution (MWD), chemical composition distribution (CCD) and stereoregularity than other coordination polymerization catalysts since it has more than one active site. LÄS MER