Download Effect of Temperature and Other Factors on Plastics and by Laurence W. McKeen PDF

By Laurence W. McKeen

This reference consultant brings jointly quite a lot of serious info at the influence of temperature on plastics and elastomers, permitting engineers to make optimum fabric offerings and layout judgements. the results of humidity point and pressure fee on mechanical and electric houses also are coated. the information are supported by means of factors of the way to use the information in actual global engineering contexts. excessive (and low) temperatures could have an important influence on plastics processing and purposes, really in industries reminiscent of automobile, aerospace, oil and fuel, packaging, and clinical units, the place metals are more and more being changed by way of plastics. extra plastics have additionally been integrated for polyesters, polyamides and others the place on hand, together with polyolefins, elastomers and fluoropolymers. completely new sections on biodegradable polymers and thermosets were further to the booklet. the extent of information incorporated - besides the massive variety of graphs and tables for simple comparability - saves readers the necessity to touch providers, and the choice consultant has been totally up to date, giving help on the questions which engineers can be asking whilst specifying fabrics for any given program.

  • Trustworthy, present thermal information and most sensible perform counsel for engineers and fabrics scientists within the plastics industry
  • More than 1,000 graphs and tables permit for simple comparability among plastics
  • Entirely new sections extra on biopolymers and thermosets.

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Extra resources for Effect of Temperature and Other Factors on Plastics and Elastomers

Example text

These properties are little affected by temperature and atmospheric humidity in the acceptable operating range of temperatures [2]. The final properties will be influenced to some extent by the conditions under which the material is processed to the final product; for example, molding at a high temperature improves the gloss and heat resistance of the product whereas the highest impact resistance and strength are obtained by molding at low temperature. ABS polymers are resistant to aqueous acids, alkalis, concentrated hydrochloric and phosphoric acids, alcohols and animal, vegetable and mineral McKeen: The Effect of Temperature and other Factors on Plastics and Elastomers.

Does the material have to be impermeable to gases and/or liquids? If so, which ones? Permeability is the subject of another book in this series. This is important for packaging foods and some medical applications. 12. Will the part be exposed to any radiation? a. Will the material be exposed to radiation? If so, how much and how long? This requirement could occur for military, utility (atomic power plants), or medical applications. The effects of radiation and sterilization methods are the subject of another book in this series.

Will the part have to withstand impact? a. Will the part be subjected to impact? b. Which impact test/data most nearly duplicates the impact occurring in this application? Reinforced plastics such as glassreinforced thermosets like epoxy, melamine, or phenolic generally have good impact strength. PC and UHMW PE also exhibit excellent impact resistance. Selection and evaluation of materials can be very complex. The following series of questions is based on material from San Diego Plastics website.

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