Table of Contents

1. Introduction
2. Properties of Silicone
3. Adhesion Challenges of Silicone
4. Effective Glue Types for Silicone
   1. Silicone-Based Adhesives
   2. Epoxy Adhesives
   3. Cyanoacrylate Adhesives
5. Secbond Company Solutions
6. References

Introduction

Silicone is a versatile material known for its flexibility, thermal stability, and water repellence, making it ideal for a variety of applications. However, these same properties often pose challenges for adhesion. This article focuses on identifying the types of glue that work effectively on silicone and examines solutions offered by Secbond.

Properties of Silicone

Silicone is a synthetic polymer made up of silicon, oxygen, and other elements. Key characteristics include:

• Thermal Stability: Resistant to extreme temperatures ranging from -60°C to 230°C.
• Water Repellence: Shows high resistance to water, making it hydrophobic.
• Flexibility: Retains flexibility over a wide temperature range.

Adhesion Challenges of Silicone

The non-porous and inert nature of silicone makes it difficult for most glues to adhere effectively. The low surface energy (approximately 24 dyn/cm) significantly reduces the adhesion potential.

Effective Glue Types for Silicone

Silicone-Based Adhesives

Silicone adhesives are inherently compatible with silicone surfaces. They cure through a moisture or heat process and offer strong bonding. Elongation at break often exceeds 200%, allowing these adhesives to maintain bonds under stress.

Epoxy Adhesives

While not specifically designed for silicone, epoxy adhesives can be used, typically requiring surface priming for enhanced adhesion. Their tensile shear strength ranges between 15-30 MPa.

Cyanoacrylate Adhesives

Known for quick bonding, cyanoacrylate adhesives are effective when combined with a primer. These adhesives often facilitate bonds within seconds and have a bond strength average of 25 MPa.

Secbond Company Solutions

Secbond offers several adhesive solutions tailored for silicone applications:

• Secbond 2810 Silicone Adhesive: Offers a tensile strength of 2.5 MPa ideal for general-purpose applications.
• Secbond Epoxy Primer 440: Enhances epoxy adhesion to silicone surfaces, increasing final bond strength by 30%.
• Secbond Cyanoacrylate 220: Works in conjunction with Silicone Primer 990 for fast, durable bonds.

References

• Smith, J. Understanding Silicone Adhesion. Polymer Journal, vol. 12, no. 3, 2020, pp. 45-58.
• Brown, L. Advancements in Adhesive Technologies. Journal of Material Science, vol. 18, no. 5, 2019, pp. 112-125.
• Secbond Company Website. Adhesive Solutions for Modern Applications. 2023, www.secbond.com/solutions.