1.Development Trends of Permanent Magnet Synchronous Motors
1.1 Technological Innovations
(1) In the field of permanent magnet materials, new types of materials are continuously emerging, featuring higher magnetic energy density and lower magnetic hysteresis losses. These advancements enable higher torque and operational temperatures. Additionally, the development of alternatives to rare earth materials is increasing, aimed at reducing costs and minimizing environmental impacts.
(2) In motor structural design, innovative magnetic circuit configurations, axial ventilation structures, brushless designs, and double rotor designs will be adopted to enhance the efficiency and reliability of the motors.
(3) Continuous improvements in control algorithms, such as model predictive control and artificial intelligence control, will lead to higher precision, faster responses, and better stability. Furthermore, sensorless control is becoming a research hotspot, while composite control methods represent the future trend.
(4) In cooling technology, new methods such as liquid cooling and phase change materials will significantly enhance the thermal dissipation performance of permanent magnet synchronous motors under high load conditions, thereby improving output stability and extending service life.
1.2 Market Expansion
(1) In the field of electric vehicles, the growing global demand for environmental protection and energy efficiency is driving unprecedented growth in the electric vehicle market, providing vast opportunities for permanent magnet synchronous motors.
(2) In the industrial sector, the rise of smart manufacturing and Industry 4.0 will see increased application of these motors in robotics, automated production lines, and CNC machine tools.
(3) In renewable energy, the widespread adoption of wind and solar power will position permanent magnet synchronous motors as key players in larger wind farms and distributed power generation systems.
1.3 Intelligent and Networked Technologies
With the advancements in IoT, cloud computing, and artificial intelligence, permanent magnet synchronous motors will achieve intelligent features such as remote monitoring, fault diagnosis, and adaptive control. These capabilities will allow for automatic adjustments in operating modes based on running conditions and environmental factors, optimizing motor performance and reducing maintenance costs.
2.Application of Adhesives for Iron Core Laminations
2.1 Typical Applications
A specialized dry adhesive designed for bonding laminated iron cores in permanent magnet synchronous motors can effectively bond coated silicon steel sheets or stamped sheets together under high temperatures and pressure. This adhesive exhibits excellent thermal conductivity, insulation properties, and no AC noise, while preventing inter-layer corrosion and reducing layer losses despite temperature variations. Additionally, the VSIKO VEX184 adhesive also provides reliable bonding for magnetic yokes and rare earth ferrite magnets.
2.2 Basic Features
- Suitable for dry bonding of silicon steel sheets and iron core laminations with a coating thickness of 2-3 μm.
- Low porosity and low curing shrinkage, with strong adhesion to the substrate.
- Moderate flow characteristics to minimize overflow during stacking and good interlayer fillability.
- High temperature resistance.
- Balanced mechanical strength and ductility, resistant to vibration and shock.
- Water-resistant, solvent-resistant, and outstanding corrosion-resistant.
- Contains a fluorescent indicator for easy detection.
2.3 Post-Curing Performance
- Pencil Hardness: 8-9H (measured with a pencil hardness tester)
- Adhesion: GT0B (measured using the cross-cut test)
- Surface Resistivity: ≥1000 Ω·m (tested with a surface resistivity meter)
- Round Bar Bending Test: No cracks (tested with a bending testing machine)
- Rolling Peel Test: 7 N/mm (tested with a peel testing machine)
If you have any questions about adhesive selection and usage, please feel free to contact us. Our team of experts has extensive experience and can provide you with free consultation services.