💡 In this Article Why a single adhesion number on a datasheet cannot fully predict real-world reliability Five representative loading modes used to evaluate adhesive joints How test conditions and standards such as ASTM and ISO can affect the measured results In the previous article, How Do Tougheners Actually Stop Crack Growth?, we looked at … Continue reading Adhesion Testing ①: Pull, Shear, and Peel Tests Explained
Author: Epoxy Formulation Researcher
[Modifier] How Do Tougheners Actually Stop Crack Growth?
💡 In This Article The role of tougheners in epoxy adhesives How tougheners dissipate stress through mechanisms such as cavitation, shear yielding, crack deflection, and crack bridging The key reliability trade-off between fracture toughness and glass transition temperature In the previous article, Why Is Epoxy Strong but Brittle? – Why Tougheners Are Needed, I looked … Continue reading [Modifier] How Do Tougheners Actually Stop Crack Growth?
[Modifier] Why Is Epoxy Strong but Brittle? — Why Tougheners Are Needed
💡 In this Article The difference between strength and toughness The relationship between crosslink density and brittleness How tougheners help dissipate stress and improve fracture resistance Why Are Tougheners Needed? One request comes up surprisingly often when developing an adhesive: "Can we keep the adhesion strength but make it less likely to crack?" At first … Continue reading [Modifier] Why Is Epoxy Strong but Brittle? — Why Tougheners Are Needed
What Actually Happens When Epoxy Cures? — Understanding Crosslink Density and Its Trade-offs
💡 In This Article How the chemical crosslinked network that determines epoxy performance is formed Why increasing crosslink density can improve some properties while reducing others Why the same epoxy resin can produce very different final properties depending on formulation and processing conditions Understanding the Curing Reaction and Crosslinked Network One of the most important … Continue reading What Actually Happens When Epoxy Cures? — Understanding Crosslink Density and Its Trade-offs
Why Does Epoxy Adhere So Well? — The Mechanism Behind Adhesion
💡 In This Article The three essential conditions for strong adhesion The microscopic mechanisms at the interface, from mechanical interlocking to chemical bonding The paradox of epoxy strength: why making an epoxy harder can sometimes hurt adhesion How to design a balanced adhesive system How Is Adhesion Created? For an adhesive to bond effectively, three … Continue reading Why Does Epoxy Adhere So Well? — The Mechanism Behind Adhesion