Are you tired of wondering if contact adhesive is waterproof? So, is contact adhesive waterproof? In short, contact adhesive is water-resistant, but it is not completely waterproof. While a cured contact adhesive bond can easily withstand temporary exposure to rain, splashes, or high humidity, it cannot tolerate long-term or continuous submersion in water. If submerged for hours or days, the adhesive layer will gradually weaken, eventually causing the bonded substrates to separate.
Read on to discover the science behind contact adhesives and why moisture impacts their performance over time.
What Is Contact Adhesive
Contact adhesive (often called contact cement) is a fast-acting, high-tack bonding agent that coats both surfaces, dries briefly, and forms an instant, permanent bond upon contact. For example, the compents of SANVO high-performance contact adhesives are:
SANVO SBS Contact Adhesive: Formulated using Thermoplastic styrene-butadiene rubber (SBS), tackifying resin, and a mixed solvent blend, delivering exceptional flexibility and fast tack.
SANVO Neoprene Contact Adhesive: Formulated with Neoprene (polychloroprene), tackifying resin, and a mixed solvent blend, offering high shear strength and heat resistance.
How does contact adhesive work?
Contact adhesive is a waterproofing agent that is used in construction and carpentry, curing with heat and pressure. When the contact glue comes into other subjects, it forms a bond between the adhesive and the surface.
After curing, the contact glue will be waterresistant and won’t brek down if it does get wet. However, it will no longer be effective if getting wet before curing.
Why is contact adhesive not waterproof
The distinction between water resistance and true waterproofing comes down to micro-level moisture penetration. Over extended periods of submersion, water molecules slowly seep into the microscopic gaps between the adhesive layer and the substrate surface.
As water permeates these micro-interfacial gaps, it interrupts the physical and chemical bonds that hold the contact adhesive to the material. Over time, this constant hydraulic exposure hydrolyzes or degrades the tackifying resins, causing the adhesive film to swell, soften, and ultimately lose its structural adhesion.
SANVO contact adhesive
SANVO is the best brand to go with when you need adhesives and sealants for industrial purposes. You can rely on us to provide the best solutions possible thanks to our extensive product catalog and dedication to quality. SANVO has all the sealants, adhesives, and threadlockers you could ever need, whether you’re looking for silicone, polyurethane, or epoxy. Our custom formulation services mean you can get a product that meets your project’s unique specifications. If you’re looking for an contact adhesive, SANVO is your best option.
