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Book Chapter

Moisture-Related Failure of Plastics

Available to Purchase

By Michelle Brown
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006929
EISBN: 978-1-62708-395-9
... Abstract This article provides an overview of the physics and math associated with moisture-related failures in plastic components. It develops key equations, showing how they are used to analyze the causes and effects of water uptake, diffusion, and moisture concentration in polymeric...
Abstract
This article provides an overview of the physics and math associated with moisture-related failures in plastic components. It develops key equations, showing how they are used to analyze the causes and effects of water uptake, diffusion, and moisture concentration in polymeric materials and resins. It explains how absorbed moisture affects a wide range of properties, including glass transition temperature, flexural and shear modulus,creep, stress relaxation, swelling, tensile and yield strength, and fatigue cracking. It provides relevant data on common polymers, resins, and fiber-resin composites.
View PDF for content titled, <span class="search-highlight">Moisture</span>-Related Failure of Plastics
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Moisture-cured urea (isocyanate + water reaction). Moisture-cured urethane ...

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in Polymeric Floor Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 19 Moisture-cured urea (isocyanate + water reaction). Moisture-cured urethane (isocyanate prepolymer contains urethane groups; reaction with water makes urethane/urea hybrid. Note: These reactions generate CO 2 . Courtesy of Loyd Burcham, Stonhard More
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Moisture accumulation from blocked drain

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in Corrosion in Commercial Aviation > Corrosion: Environments and Industries
Published: 01 January 2006
Fig. 11 Moisture accumulation from blocked drain More
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Dependence of corrosion rate on moisture film thickness. Adapted from Ref ...

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in Corrosion in Microelectronics > Corrosion: Environments and Industries
Published: 01 January 2006
Fig. 3 Dependence of corrosion rate on moisture film thickness. Adapted from Ref 22 More
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Time for moisture to permeate various packaging materials. Adapted from Re...

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in Corrosion in Microelectronics > Corrosion: Environments and Industries
Published: 01 January 2006
Fig. 8 Time for moisture to permeate various packaging materials. Adapted from Ref 72 More
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Effects of moisture content of wood and atmospheric humidity on the expansi...

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in Patterns and Patternmaking > Casting
Published: 01 December 2008
Fig. 6 Effects of moisture content of wood and atmospheric humidity on the expansion and shrinkage of three pattern woods More
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Effects of moisture on fatigue crack growth rates in aluminum alloys. Sourc...

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in Selecting Aluminum Alloys to Resist Failure by Fracture Mechanisms > Fatigue and Fracture
Published: 01 January 1996
Fig. 63 Effects of moisture on fatigue crack growth rates in aluminum alloys. Source: Ref 101 More
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Effect of ambient moisture on dry times of a polyaspartic topcoat

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in Polyaspartic Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 4 Effect of ambient moisture on dry times of a polyaspartic topcoat More
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Calcium Chloride Moisture Vapor Emission Test

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in Shop and Field Quality Control and Quality Assurance > Protective Organic Coatings
Published: 30 September 2015
Fig. 16 Calcium Chloride Moisture Vapor Emission Test More
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Measuring moisture on wood surfaces. Courtesy of KTA-Tator, Inc.

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in Coating Various Substrates > Protective Organic Coatings
Published: 30 September 2015
Fig. 17 Measuring moisture on wood surfaces. Courtesy of KTA-Tator, Inc. More
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(a) Moisture and debris trap at the bottom of a connection on a truss bridg...

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in Bridge Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 12 (a) Moisture and debris trap at the bottom of a connection on a truss bridge. (b) Rust scale that has developed due to the accumulation of dust, dirt, and debris on a coated steel substrate that retains moisture and increases wet time. Note the pen tip at the center-right More
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Failing exterior coating caused by moisture problems with the building

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in Coatings for Commercial Structures and Building Deficiencies that Affect Performance > Protective Organic Coatings
Published: 30 September 2015
Fig. 4 Failing exterior coating caused by moisture problems with the building More
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Interior light-colored efflorescence indicates moisture intrusion.

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in Coatings for Commercial Structures and Building Deficiencies that Affect Performance > Protective Organic Coatings
Published: 30 September 2015
Fig. 18 Interior light-colored efflorescence indicates moisture intrusion. More
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Moisture-sensitive elastomeric finish coat was overcoated with acrylic. Ent...

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in Coatings for Commercial Structures and Building Deficiencies that Affect Performance > Protective Organic Coatings
Published: 30 September 2015
Fig. 27 Moisture-sensitive elastomeric finish coat was overcoated with acrylic. Entrapped moisture led to wrinkling and blistering of the elastomeric. More
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Moisture vapor permeability cup. Courtesy of the Paul N. Gardner Company (G...

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in Qualification Testing for Coating System Selection > Protective Organic Coatings
Published: 30 September 2015
Fig. 19 Moisture vapor permeability cup. Courtesy of the Paul N. Gardner Company (Gardco). Source: Ref 9 More
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Moisture-cure reaction of alkoxysilane-functional acrylic resin

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in Acrylic Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 6 Moisture-cure reaction of alkoxysilane-functional acrylic resin More
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Moisture-cure polyurethane cool-roof coating being applied to a commercial ...

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in Polyurethane Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 3 Moisture-cure polyurethane cool-roof coating being applied to a commercial roof in a coastal environment for superior water and wind uplift resistance. Photo used by permission of NEOGARD Division, Jones-Blair Company More
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The isocyanate first reacts with ambient moisture to form an amine and carb...

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in Polyurethane Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 4 The isocyanate first reacts with ambient moisture to form an amine and carbon dioxide gas. The amine then reacts with another isocyanate group to form a urea linkage. This process continues until the coating has cured. More
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Moisture-cured three-coat polyurethane system used to coat hard-to-reach pi...

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in Polyurethane Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 5 Moisture-cured three-coat polyurethane system used to coat hard-to-reach piping and valves inside the Hammond Water Filtration Plant, Hammond, IN. The coating system was specified to combat unusual conditions, particularly extreme pipe condensation. Photo used by permission More
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Effect of moisture on elastomer density

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in Polyurea-Based Coatings > Protective Organic Coatings
Published: 30 September 2015
Fig. 19 Effect of moisture on elastomer density More