Sökning: "Melt onset"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Melt onset.

1. 1. Electronic Waste Plastics Characterisation and Recycling by Melt-processing

   Författare :Erik Stenvall; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; melt-blending; WEEE; ternary polymer blend; processing conditions; plastics recycling; composition analysis; e-waste;

   Sammanfattning : Melt-processing of blended plastics from waste electrical and electronic equipment (WEEE) is a method to facilitate mechanical recycling, and this might improve the recycling conditions and increase the amounts of plastics being recycled. To ensure the quality of melt-blended plastic waste, it is essential to know the composition of the incoming material and then possibly improve the compatibility between the different polymer phases. LÄS MER

3. 2. On the atmospheric transport pathways of heat into the Arctic in winter and spring

   Författare :Sonja Murto; Rodrigo Caballero; Gunilla Svensson; Dörthe Handorf; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arctic climate; Blocking; Warm-air intrusions; Surface energy budget; Melt onset; MOSAiC; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

   Sammanfattning : The atmospheric meridional energy transport is an important component in the global climate system, as it transports moisture and heat from the midlatitudes into the Arctic, balancing the regional energy loss to space. Narrow and intense injections of warm and moist air, so-called warm-air intrusions, have a large local imprint on the surface through various processes acting on different scales, such as cloud formation, turbulent fluxes and atmospheric large-scale circulation. LÄS MER

4. 3. Influence of processing and processing additives on the degradation of aliphatic polyesters

   Författare :Rasmus Renstad; KTH; []
   Nyckelord :;

   Sammanfattning : Poly(3-hydroxybutyrate-co-3-hydroxyvalerate), P(3HB-co-3HV),poly(ε-caprolactone), PCL, and poly(lactic acid), PLA,have been subjected to film-blowing, melt-extrusion andmelt-pressing. The influence of processing conditions andprocessing additives (i.e. plasticizer, antiblocking and slipagents) on properties and degradation have been studied. LÄS MER

5. 4. The atmospheric contribution to Arctic sea-ice variability

   Författare :Marie-Luise Kapsch; Rune G. Graversen; Michael Tjernström; Jennifer Francis; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sea ice; Arctic; Climate Variability; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

   Sammanfattning : The Arctic sea-ice cover plays an important role for the global climate system. Sea ice and the overlying snow cover reflect up to eight times more of the solar radiation than the underlying ocean. Hence, they are important for the global energy budget, and changes in the sea-ice cover can have a large impact on the Arctic climate and beyond. LÄS MER

7. 5. Highly-filled biocomposites: modelling, processing, and characterization

   Författare :Sajjad Pashazadehgaznagh; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modelling; fiber orientation; rheology.; Wood plastic composites WPCs ; extrusion; surface instability;

   Sammanfattning : The use of polymer with natural fiber reinforcements is expected to increase significantly. This can be noted in several industrial sectors of strategic importance for Sweden, such as automotive, packaging, construction, and furniture industries. LÄS MER