Improving the moisture resistance of adhesives and sealants requires comprehensive improvements from various aspects such as material selection, formulation design, and process optimization. The following are the specific strategies and steps: 1. Material selection optimization and hydrolysis-resistant matrix material. Silicone materials: naturally hydrophobic and suitable for high humidity environments (such as bathroom sealant). Modified epoxy resin: Enhance hydrolysis resistance by introducing hydrophobic groups such as fluorination or silicone modification. Polyurethane modification: Aliphatic isocyanate is used to replace aromatics, which has stronger hydrolysis resistance. Filler-enhanced hydrophobic filler: Add silica, mica or carbon nanotubes to form a physical barrier layer. Nanomaterials: such as graphene or organic clay, increase the tortuousness of the moisture permeability path. 2. For formula improvement coupling agents, use silane coupling agents (such as KH-550, KH-560): enhance interfacial adhesion and form a hydrophobic film layer. Titanate coupling agent: Improves the compatibility of polar surfaces with resins and reduces moisture erosion. Anti-moisture additives

Monitoring the curing process of adhesives and sealants is a critical step to ensure that their performance (such as bond strength, durability, etc.) meets expectations. The following are some commonly used monitoring methods, their principles and applications:

FlowControl is proud to attend the International Valve Fair, showing off the latest valve products and solutions. As an industry leader, our products have attracted the attention of many visitors. At this exhibition, we showed off a variety of valve products, including fixed throttle valves