Sökning: "Vectra"

Hittade 5 avhandlingar innehållade ordet Vectra.

1. 1. Barrier Properties of Liquid Crystalline Polymers and their Blends with PE and PETP

   Författare :Göran Flodberg; KTH; []
   Nyckelord :Blends; polyethylene; poly ethylene terephthalate ; liquid crystalline polymers; Vectra; barrier properties; morphology; pouches; sealing; migration; high performance liquid chromatography; HPLC ;

   Sammanfattning : .... LÄS MER

3. 2. Influence of liquid diffusion on the performance of polymer materials in industrial applications

   Författare :Stefanie Römhild; Mikael Hedenqvist; Lars Berglund; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LCP; Vectra A950; thermoset resin; FRP; diffusion; disclination; annealing; lining; bonding; long-term properties in water; Polymer chemistry; Polymerkemi;

   Sammanfattning : Diffusion of liquids into and through polymers is an important factor that negatively may influence the durability or lifetime of a polymer structure used in industrial applications. In this work two types of polymers, a liquid crystalline polymer (LCP, Vectra A950) and various thermoset resins as used in fibre reinforced plastics (FRP) process equipment were studied with regard to barrier properties, chemical resistance and long-term performance. LÄS MER

4. 3. Transport Properties and Durability of LCP and FRP materials for process equipment

   Författare :Stefanie Römhild; Mikael Hedenqvist; Rodney Rychwalski; KTH; []
   Nyckelord :Liquid crystalline polymer LCP ; Vectra A950; disclination; annealing; transport properties; diffusion; lining; bonding; glass fibre reinforced plastics FRP ; thermoset; vinyl ester; novolac; water; water activity; sorption isotherm; long-term properties; FEP;

   Sammanfattning : This thesis focuses on transport properties and durability of liquid crystalline polymers (LCP)and fibre reinforced plastics (FRP) with regard to application in industrial process equipment.In the first part of the study the possibility of using a thermotropic LCP of type Vectra A950as lining material for FRP process equipment was investigated. LÄS MER

5. 4. Devlopment and relaxation of orientation in liquid crystalline polymers : transport properties of liquid crystalline polymer blends

   Författare :Göran Wiberg; KTH; []
   Nyckelord :;

   Sammanfattning : In this thesis different types of liquid crystallinepolymers have been investigated with respect to build up andrelaxation of orientation. The potential of making new barriermaterials using liquid crystalline polymer blends was alsostudied. LÄS MER

7. 5. Long-term follow-up after risk-reducing mastectomy and immediate breast reconstruction : from a patient, partner, and 3D perspective

   Författare :Lucy Bai; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : BACKGROUND: Breast cancer is the most common type of cancer among women. Approximately 5–10% of all breast cancer cases have an inherited pattern, and ~20% of all hereditary cases have an identifiable mutation. LÄS MER