In the context of modern warfare, drones have become one of the core combat equipment

“Hardcore Partner” – Thermal Conductive Adhesive

Because drones need to be as small as possible, but in many cases they need to face some harsh application environments. These working environments have very high requirements on the electronic and electrical components of drones. At this time, we have to use our excellent performance, Fully functional adhesive too.

Drone motor control board protection

For some special working drones, their special working environment has strict requirements on electronic and electrical components. For example, in order to prevent short circuit caused by harsh working environment. It is necessary to use three-proof adhesive that can withstand extreme environments such as dustproof, moisture-proof, waterproof, anti-static, salt spray, acid and alkali resistance, etc. to protect the motor control board.

PCB chip bonding and fixing

The main control chip has an important impact on the stability, data transmission reliability, accuracy, real-time performance, etc. of the UAV, and also plays a decisive role in its flight performance. PCB chip fixing refers to the bonding of PCB and chip pin solder balls, mainly using hot melt adhesive. In order to prevent the chip from loosening due to vibration and causing the PCB to fail, the glue used needs to have properties such as resistance to mechanical stress.

Drone camera

The camera module is very delicate, and its internal components have a variety of adhesive requirements. Similar to mobile phone camera modules, it mainly requires the use of UV glue, underfill glue, low-temperature thermosetting glue, etc. For example, UV glue is required to fix the focal length of the lens module.

Drone gimbal

The drone gimbal is mainly used to install and fix cameras, so ensuring the stability of the gimbal is an important factor in ensuring clear image quality. The pan/tilt needs to withstand a large tensile force and is generally made of nylon and stainless steel. Epoxy structural adhesives with a wide bonding range, high bonding strength and fast curing speed are often used.

Drone window screen bonding

The use of single-component, solvent-free hot melt adhesive for drones requires anti-aging, anti-drop, impact resistance, high and low temperature resistance, waterproof and moisture-proof, and excellent adhesion to plastics, metals, glass and composites.

Drone frame bonding and fixation

Most drone frames are carbon fiber brackets, and their working environment determines the final choice. Mainly use epoxy structural adhesives with high bonding strength, fast curing speed, good stability, outdoor waterproof, environmentally friendly and non-toxic, and can be used for bonding a variety of materials.

Drone battery

Although drones are divided into many types according to their applications, there is only one type of drone battery: polymer lithium battery. Depending on its application scenarios, the requirements for the battery are also different. Silicone potting glue is usually used for internal potting, and thermal conductive gel is used for heat dissipation.

The thermally conductive adhesive materials mentioned above are all on sale at Yunshang New Materials.

Drone motor ESC

The power of the drone is the motor and ESC. UAV flight relies entirely on propellers or turbofans for traction and drive, and propellers or turbofans need to be driven by motors. ESCs are mainly used to control the speed and power of the motors to maintain the smooth flight of the UAV. The glue used in motors is mainly divided into the following

three aspects:

1.Use thermal gel to dissipate heat/thermal pads

As a member of electronic equipment, heat dissipation issues must be considered.

If the motor ESC overheats and causes performance degradation, the ESC cannot control the motor speed well and may generate a current that the flight controller cannot withstand. In most cases, the layout of drone motors and ESCs is compact, and thermal gel, heat pipes, and heat exhaust vents are used together. Thermal conductive gel/thermal conductive pad is applied between the image transmission mainboard and the heat sink plate to dissipate heat. The heat dissipation pipe effectively absorbs the heat inside the drone, and quickly dissipates the heat on the heat dissipation pipe through the heat dissipation port to solve the heat dissipation effect. Difference.

2.Using structural adhesive to bond motor magnets

For the motor to function, the magnet needs to be fixed to the motor's housing or base. Epoxy series structural adhesives have high bonding strength, good stability, and wide application range. They can be used for bonding rigid materials, and can also be used for bonding metal and glass, such as bonding magnets to electroplated metal parts of motors or speaker parts.

Excellent shear strength and peel strength;

High impact resistance makes the bonding durable;

The 20-minute operation time helps shorten the process cycle;

Low viscosity, easy to flow and fill on irregular surfaces;

Good strength retention after environmental aging.

3.Use potting glue to pott the internal motherboard of the ESC

After potting, it is necessary to maintain good adhesion with the shell, and the adhesive also needs to be environmentally friendly, thermally conductive, outdoor waterproof, and easy to repair.

The core R&D team of Shenzhen Yunshang New Material Technology Co., Ltd. has many years of thermal management research experience in the fields of aerospace, military products and 3C civilian products, and is deeply involved in the field of thermal management of semiconductor chips, high-power power supplies, chassis, servers and other systems. Facing the problem of high-power and high-density heat dissipation, he has rich engineering design and application experience in air cooling, liquid cooling, radiation cooling, fluid loop and heat storage technologies.