/ Silicone structural adhesive

Silicone structural adhesive

Silicone structural adhesive is an elastomeric adhesive of the room-temperature vulcanizing or heat-curing type, formulated with α,ω-dihydroxypolydimethylsiloxane as the base polymer, combined with crosslinking agents, fillers, and other components. Its molecular backbone consists of siloxane bonds (Si-O-Si), and after curing it forms a soft elastomer that maintains excellent elasticity and sealing capability across the entire temperature range. It is mainly used in structural bonding and sealing applications with stringent requirements for weather resistance, high and low temperature resistance, and long-term displacement deformation.

Product Description

Core Features

The core advantage of silicone structural adhesive lies in its unparalleled high and low temperature resistance range (typically -60℃ to 250℃) and excellent resilience, allowing it to withstand expansion, contraction, and vibration over the long term without losing adhesion or cracking. At the same time, it has an extremely long weather-resistant lifespan against ozone, UV, and humid heat, stable electrical insulation, good adhesion to substrates such as glass, metal, and ceramics, and because of its low modulus, it causes almost no stress damage to substrates.

Typical Application Scenarios

??Photovoltaics and New Energy: Sealing of solar module frames and bonding of junction boxes, waterproof sealing and elastic cushioning fixation of power battery pack enclosures.

??Aerospace: Pressure-resistant sealing inside aircraft cabins, elastic bonding of aviation glass and window frames, adapting to extreme high-altitude temperature differences.

??Electronics and Electrical Appliances: Thermal conduction and sealing bonding of high-power power supply modules, overall waterproof potting of outdoor displays and sensors.

??Industrial Manufacturing: Sealing and bonding of high-temperature ovens and pipeline flanges, fixation and insulation protection of heating components in home appliances.

Related Products

Acrylate structural adhesive

Acrylate structural adhesive is a two-component reactive adhesive formulated from acrylate monomers, elastomers, initiators, and other components. It cures quickly and has strong adhesion to difficult-to-bond surfaces such as oily metals, engineering plastics, and composite materials. It is a structural bonding solution that combines high strength with excellent impact resistance, and is widely known as "acrylic AB glue."

Polyurethane structural adhesive

Polyurethane structural adhesive is a high-performance adhesive that uses polyurethane prepolymer as its base material and cures through moisture or heat to form elastic polymers. After curing, it exhibits outstanding toughness and impact fatigue resistance. It can form strong bonds with a variety of substrates such as metals, composite materials, engineering plastics, wood, and concrete. At the same time, it has an adjustable elastic modulus that can range from semi-rigid to highly elastic, making it particularly suitable for joining scenarios that require vibration damping, impact resistance, and tolerance of deformation. It is one of the core adhesive types in fields such as automotive manufacturing, building assembly, and composite material joining.

Epoxy structural adhesive

Epoxy structural adhesive is a high-strength engineering adhesive based on epoxy resin, combined with curing agents, toughening agents, fillers, etc. It cures through chemical reaction rather than solvent evaporation, forming a three-dimensional crosslinked network structure after curing. It can achieve excellent bonding for metals, ceramics, glass, wood, and most hard plastics. While withstanding high loads, it also provides sealing, insulation, temperature resistance, and other properties. It is one of the core materials in fields such as aerospace, automotive manufacturing, electronic packaging, and building reinforcement that replace welding and mechanical fastening.