SPE Library
The SPE Library contains thousands of papers, presentations, journal briefs and recorded webinars from the best minds in the Plastics Industry. Spanning almost two decades, this collection of published research and development work in polymer science and plastics technology is a wealth of knowledge and information for anyone involved in plastics.
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Failure Analysis and Prevention
Basic Rubber Technology
This webinar will introduce the attendees to the basics and most important topics related to thermoset rubber compounds. About 15 billion kilograms of rubber are produced ever year. Rubber finds its way into wide range of applications in the automotive, medical, appliance, electrical, and chemical industries. As a class of materials, rubber has many useful properties because of its unique molecular structure. These include being soft and relatively flexible, high ultimate elongation coupled with good elastic recovery, useful over a wide temperature range, and good chemical resistance.
Topics include: Introduction to polymers — how rubber is different than plastic, overview of rubber properties, how rubber compound recipes are created, the essentials of rubber mixing and molding, and specific rubber compounds.
Creep Failure of Plastics
Creep is the tendency of a polymeric material to deform permanently under the influence of constant stress, as applied through tensile, compressive, shear, or flexural loading. It occurs as a function of time through extended exposure to levels of stress that are below the yield strength of the material. Given sufficient time, this can lead to creep rupture, the failure within a material as a result of continuously applied stress at a level below the tensile strength. Plastic materials are particularly prone to creep rupture through exposure to static stresses, and a recent study indicates that 22% of plastic failures are associated with creep.
The relatively high frequency of creep failure is linked to the widespread lack of awareness and understanding of the effects of time on polymeric materials, particularly at the design stage; the unique difference in time dependence between polymeric materials and metals; and the increasing use of plastic materials in diverse applications with longer time demands. The concept of creep is extremely important to manufacturers and users of plastic components.
This webinar will cover:
Thermal Analysis in Failure and Compositional Analysis
SPE Webinar Series - Thermal Analysis in Failure and Compositional Analysis, presented by Jeff Jansen on December 6, 2018.
Thermal analysis is an important group of tests used in the analysis of plastics and other polymeric materials. It consists of a family of well-established techniques that evaluate material properties as they change with temperature, time, and ambient environment under conditions of thermal programming. The results of thermal analysis tests provide qualitative and quantitative information about the material being evaluated. In particular, this information is important to address plastic failures or in characterization of the material composition and physical properties.
The webinar on thermal analysis will introduce the four primary techniques:
Ductile to Brittle Transitions in Plastics
Goals: To address questions that arise regarding plastic component failure:
Wear of Plastics
Goal: To address questions that arise regarding wear within plastic components
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