Calcium phosphate-based cement potting material and manufacturing method thereof

Abstract

The invention provides a calcium phosphate-based cement potting material, wherein nano-polyimide fibers are evenly distributed in the calcium-phosphate-based cement, wherein the mass fraction of the nano-polyimide fibers is 1%-10%. The use of calcium phosphate-based cement as the basic packaging material reduces costs. The cost of cement is lower than the cost of any existing system; and high temperature resistance, the above potting material system can withstand high temperature of 350 °C; and the process of cement hydration is improved by adding nano polyimide fibers, Reduced porosity. After the final setting of the cement, the possibility of crack formation is reduced, and the ability of the cement to resist water and salt spray is improved.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a calcium phosphate-based cement potting material and a manufacturing method thereof. Background technique [0002] With the rapid development of power electronic systems, the demand for global energy interconnection and the ubiquitous power Internet of Things, the performance of power electronic devices based on Si (silicon) has reached its theoretical limit. Driven by various challenges and practical needs, it is necessary to continuously improve the switching and conduction performance of devices, and wide bandgap semiconductors are born. However, the current electronic packaging systems are all developed based on Si (silicon) devices, and when wide bandgap semiconductor devices are used to replace silicon devices and develop towards high voltage, high temperature and high frequency, the original packaging system is not applicable, and the packaging Materials have become an...

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Problems solved by technology

For example, there may be air holes, and cracks may occur after long-term use

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