Essays about: "Johannes Bohlin"

Found 2 essays containing the words Johannes Bohlin.

1. 1. Lifetime prediction of a polymeric propellant binder using the Arrhenius approach

   University essay from Uppsala universitet/Tillämpad materialvetenskap

   Author : Johannes Bohlin; [2021]
   Keywords : Polymer; Thermal-oxidative degradation; Lifetime prediction; Propellant; Arrhenius; Aging experiments; Diffusion-limited oxidation;

   Abstract : The thermal-oxidative degradation of a crosslinked hydroxy-terminated polybutadiene (HTPB)/cycloaliphatic diisocyanate (H12MDI) based polymer, which is commonly used as a polymeric binder in propellants, is investigated at temperatures from 95°C to 125°C with the aim of estimating the lifetime of the material in storage conditions (20°C) using the Arrhenius approach. Furthermore, the effect of antioxidants and to a lesser extent plasticizer on the degradation process was also studied. READ MORE

3. 2. INTERN MATERIALHANTERING PÅ ISABERG-RAPID

   University essay from JTH, Industriell organisation och produktion; JTH. Forskningsområde Industriell organisation och produktion

   Author : Fredrik Bohlin; Johannes Persson; [2009]
   Keywords : ;

   Abstract : Isaberg-Rapid has problems with their internal material handling. The goal with this report is to create a layout for a pilot group in the production. Furthermore will appropriate carriers be suggested and the way of communicate between the stock keeping unit through coating to the assembly group will be analyzed. READ MORE