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What are the applications of vacuum degassing, potting and curing assembly lines in the aerospace in
source：www.cnkaihui.com | Release time：2026年07月07日1、 Airborne/spaceborne core electronic module
1. Compatible products
Satellite onboard computer, flight control circuit board, onboard navigation board, onboard communication RF module, rocket control unit, aerospace bus module
2. The role of assembly line technology
Vacuum degassing throughout the entire process to eliminate micron sized air gaps
Before sealing with epoxy resin/silicone, the AB adhesive should be vacuum pre defoamed, and the workpiece should be placed in a vacuum chamber for injection. The air in the capillary gaps, BGA pins, and multi-layer PCB interlayer should be completely extracted, and the bubble rate should be controlled to be ≤ 0.01% to prevent bubble expansion and cracking, as well as partial discharge breakdown of the circuit under space high and low temperature alternation (-60 ℃~150 ℃).
Integrated cushioning and shock resistance
The encapsulation gel completely wraps the chip, solder joints, and wiring. The high-frequency impact vibration of rocket launch and high-speed flight of aircraft is absorbed by the gel to avoid solder joint detachment and component displacement failure.
Space environment protection
The cured adhesive layer isolates space atomic oxygen, ultraviolet radiation, moisture, and dust, and the satellite will not experience line corrosion in orbit for several years; Airborne equipment can resist high-altitude condensation, salt spray, and ozone erosion.
Constant temperature step curing assembly line
Segmented temperature controlled curing (low-temperature pre curing+high-temperature post curing), controlling the internal stress of the gel to prevent deformation of thin PCB and micro components.
2、 Aerospace precision sensors MEMS、 Microwave radar device
1. Compatible products
Satellite attitude sensor, airborne eddy current displacement sensor, infrared detection component, millimeter wave radar transceiver unit, gyroscope component, pressure/temperature aerospace transmitter
2. Core application value
No bubbles ensure measurement accuracy
If there are residual bubbles in the gap of the sensitive core of the sensor, the expansion under temperature difference will squeeze the sensing element, causing zero drift and measurement distortion; Vacuum sealing is completely filled to ensure long-term signal stability.
Low stress slow-release infusion
The assembly line adopts gradient pressure relief technology, which will not rapidly pressurize and damage ultra-thin sensitive membranes and micro optical components; Silicone soft rubber vacuum sealing is suitable for high-precision MEMS gyroscopes.
Low loss microwave transmission
The vacuum sealing of the RF radar cavity eliminates the interference of air dielectric constant, ensures the consistency of signal transmission, and meets the RF specifications of airborne radar and satellite communication.
3、 Aerospace high-voltage power, power supply, and converter components
1. Compatible products
Satellite power module, onboard high-power DC-DC converter, aerospace high-voltage transformer, IGBT power unit, rocket ignition drive power supply, aerospace high-voltage transformer
2. The essential function of the assembly line
High insulation and voltage resistance
The air insulation strength is much lower than that of epoxy sealant, and bubbles will form weak insulation points, resulting in creepage and arc breakdown under high voltage; Vacuum dense sealing significantly improves the pressure resistance level and meets the safety standards of aerospace high-voltage power supplies.
Continuous thermal conduction and heat dissipation
Thermal conductive epoxy vacuum filled power devices without gaps eliminate air insulation layers, quickly dissipate chip heat, and avoid overheating and burning power components during in orbit and flight conditions.
Flame retardant and explosion-proof
The solidification assembly line is equipped with aerospace grade flame-retardant potting material, and the dense colloid blocks the diffusion of short-circuit sparks, improving the safety redundancy of rocket and manned spacecraft power supply.
4、 Aircraft composite structural components, adhesive seals
1. Compatible products
Carbon fiber aviation composite parts, aircraft structural adhesive joints, satellite bracket bonding, rocket instrument cabin sealing filling, honeycomb interlayer filling adhesive
2. Process application
Vacuum defoaming and densification of composite materials
The assembly line vacuum system extracts the internal bubbles of the composite wetting adhesive, and after curing, there are no internal holes. The structural tensile and bending strength is increased by 10% to 15%, while achieving lightweight and weight reduction, suitable for aircraft and satellite weight reduction indicators.
Structural gap filling and sealing
The joints between the fuselage and cabin are vacuum filled with structural adhesive, which is airtight and waterproof after curing, and can resist high-altitude pressure difference, rainwater, and fuel penetration.
5、 Special sealing/energy storage components for rockets and satellites
1. Aerospace capacitors and energy storage capacitor modules
Vacuum sealing eliminates bubbles between capacitor plates, prevents internal gas expansion and leakage in low-pressure space environments, and extends the service life in orbit.
2. Arrow ignition and detonation control components
Fully vacuum sealed, moisture-proof, and electromagnetic interference resistant, ensuring stable and reliable detonation signals under high and low temperature and strong vibration conditions of the rocket.
3. Sealing and filling of propellant pipeline sensors and valve groups
Chemical resistant special adhesive vacuum infusion, isolating fuel and oxidant corrosion, while buffering launch impact.
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