Text

Moisture Absorption and Desorption Effects on Mechanical Behavior in Specialty Polyamide Products

About this Digital Document

Nylon manufacturers provide one-size-fits-all recommendation for drying resin regarding temperature and time. This directive is generic considering the various types of nylons produced for various applications in automotive, sports, leisure, domestic appliances, and optics. Field experts and consultants provide vague points on the importance of drying nylons before processing, what temperatures to use, and how to avoid over drying. Determining an effective drying method for nylon resins and parts begins with understanding the degradation mechanisms associated with water absorption. The degradation mechanisms include plasticization, hydrolysis, and thermal oxidation. Another factor to consider is the effect of additives, fillers, and chemical structure on absorption behavior. This information provides a base for the qualitative analysis of water absorption and desorption behavior on specialty polyamides products such as unreinforced PA6, 50% glass reinforced PA6, 50% glass reinforced PA66+PA6, PA MACM12, 50% glass reinforced PA12, PA6I/6T, and 50% glass reinforced PA66+PA6I/X. These products share behavior indicative of their polyamide base as well as exhibit unique characteristics influenced by their composition.

Full Title
Moisture Absorption and Desorption Effects on Mechanical Behavior in Specialty Polyamide Products
Member of
Theses and Dissertations
Contributor(s)
Creator: Brown, Michelle Denison
Thesis advisor: Pearson, Raymond A.
Publisher
Lehigh University
Date Issued
2019-05
Language
English
Type
Text
Genre
theses
Form
electronic documents
Department name
Materials Science and Engineering
Digital Format
electronic documents
Media type
application/pdf
Creator role
Graduate Student
Subject (LCSH)
Materials science
Keywords
Polymer Science & Engineering

Citation


        
      

              

        
@mastersthesis{brown2019,
  title = {Moisture Absorption and Desorption Effects on Mechanical Behavior in Specialty Polyamide Products},
  author = {Brown, Michelle},
  year = {2019},
  month = may,
  publisher = {Lehigh University},
  keywords = {Polymer Science & Engineering},
  abstract = {Nylon manufacturers provide one-size-fits-all recommendation for drying resin regarding temperature and time. This directive is generic considering the various types of nylons produced for various applications in automotive, sports, leisure, domestic appliances, and optics. Field experts and consultants provide vague points on the importance of drying nylons before processing, what temperatures to use, and how to avoid over drying. Determining an effective drying method for nylon resins and parts begins with understanding the degradation mechanisms associated with water absorption. The degradation mechanisms include plasticization, hydrolysis, and thermal oxidation. Another factor to consider is the effect of additives, fillers, and chemical structure on absorption behavior. This information provides a base for the qualitative analysis of water absorption and desorption behavior on specialty polyamides products such as unreinforced PA6, 50\% glass reinforced PA6, 50\% glass reinforced PA66+PA6, PA MACM12, 50\% glass reinforced PA12, PA6I/6T, and 50\% glass reinforced PA66+PA6I/X. These products share behavior indicative of their polyamide base as well as exhibit unique characteristics influenced by their composition.},
  language = {English},
}