With the advancement of materials science, the chemical system of coating adhesives is becoming increasingly diverse, and different resin matrices endow products with vastly different performance characteristics. At present, the mainstream coating adhesives in the market mainly include four categories: acrylic, silicone, polyurethane, and epoxy resin.

Acrylic coating adhesive is widely used in the field of conventional consumer electronics due to its fast surface drying speed, affordable price, and easy rework and repair. However, its high temperature resistance and chemical corrosion resistance are relatively limited. In contrast, organosilicon coating adhesives exhibit excellent high and low temperature resistance and flexibility, capable of withstanding extreme temperature cycles and effectively releasing mechanical stress, making them particularly suitable for harsh environments such as aerospace and automotive electronics. However, their surface hardness is lower and they are prone to cross contamination with other chemicals.

Polyurethane coating adhesive exhibits excellent solvent resistance, wear resistance, and moisture resistance, and has stable low-temperature performance. However, its texture is relatively brittle, making rework difficult. Epoxy resin coating adhesive is known for its extremely high hardness, excellent wear resistance, and strong component fixing effect, but its rigid characteristics make it prone to stress on components during drastic temperature changes, and it is almost impossible to perform secondary rework.

Engineers need to weigh the advantages and disadvantages of various materials comprehensively based on specific application environments, electrical requirements, and later maintenance needs, in order to make the most reasonable choice.

Regarding liquid silicone rubber, please refer to our website for details: IOTA Liquid Silicone Rubber