The Universal Selection Source: Coatings Ingredients

Online Course

Bonding Dissimilar Materials: How to Reduce Internal Stress Levels

This is a Past Course

Recorded on Mar 30, 2017

Avoid premature adhesion failure when bonding dissimilar materials (LSE plastics, metal, composites, ceramics…) by learning how to efficiently manage the problem of internal stress and cure shrinkage.

Edward Petrie will share how to deal with the differences in material properties (shrinkage, thermal expansion, elongation...) and optimize formulations. He will also discuss the importance of joint designs and cure conditions to optimally bond dissimilar materials.

Read the full Course Outline

Presented By:
Edward M. Petrie
Length: 90 min

Course Type: Formulation
Level: Intermediate

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Package includes:

.wmv Courses Recording, Presentation Slides & Transcript of Q&A session

Why should you view this course?

The need to join dissimilar materials is ever-growing in light of advances in technology to decrease weight, improve performance, and reduce cost. Being a very specialized field that has only been technically developed in recent years, some of your attempts to bond dissimilar materials have most likely led to early product failure and consequently, customer dissatisfaction. Join this course and:

  1. Understand all the parameters (material properties, formulation, cure conditions, joint design...) impacting internal stress levels in dissimilar joints. 

  2. Learn about the latest strategies and emerging technologies in the industry for optimal bonding in hybrid structures

  3. Reduce revision and product development time by gaining knowledge about the best practices to develop successful solutions.

Avoid Adhesion Failure

Who should view this course?

  1. Adhesive formulators and design engineers involved in developing solutions (adhesive formulations, joint designs, etc.) to bond dissimilar materials in hybrid structures.
  2. Coatings formulators facing challenges in coating plastics and other LSE substrates and in reducing stress between 2 layers (multi-layer coatings, recoatable coatings...)
  3. This course is also useful for those engaged in failure analysis of bonded joints

Course Outline

  • Why Bonding Dissimilar Materials is Difficult
    • The Problem of Internal Stress
    • Problematic Applications

  • Influence and Resolution of:
    • Bondline Imperfections
    • Coefficient of Thermal Expansion (CTE) Differences
    • Cure / Drying Shrinkage
    • Different Modulus

  • Strategies to Reduce Internal Stress – Optimization of:
    • Adhesives Formulations
    • Joint Designs
    • Cure Conditions

  • Test Methods

  • Technical Tips

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Members Reviews

Good insight into internal stresses of bondline/causes and effects.

Alisha A. , from Appli-Tec

Good explanation of overall concepts and practical solutions.

Garret D. , from Gentex Corporation

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