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Calcium phosphate-based cement potting material and manufacturing method thereof

A technology of potting material and manufacturing method, which is applied in the field of calcium phosphate-based cement potting material and its manufacturing, and can solve problems such as cracks

Active Publication Date: 2022-03-08
GUANGHUA LINGANG ENG APPL & TECH R&D (SHANGHAI) CO LTD
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  • Claims
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Problems solved by technology

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

Method used

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  • Calcium phosphate-based cement potting material and manufacturing method thereof

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Embodiment Construction

[0013] The specific implementation of a calcium phosphate-based cement potting material provided by the present invention and its manufacturing method will be described in detail below.

[0014] This specific embodiment provides a calcium phosphate-based cement potting material, in which nano-polyimide fibers are evenly distributed in the calcium phosphate-based cement, wherein the mass fraction of nano-polyimide fibers is 1%-10% . Preferably, the nanometer polyimide fiber has a fiber length in the range of 30-80 microns and a fiber diameter in the range of 30-200 nanometers.

[0015] The above cement materials can be obtained in two ways, one is mixing during stirring, that is, dissolving nano polyimide fibers in water to form fiber liquid; and then continuously adding dissolved fibers during the hydration process of calcium phosphate-based cement and stirring the liquid to make it evenly mixed to obtain a calcium phosphate-based cement potting material for potting, wherein ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34C04B111/20C04B111/28C04B111/34
CPCC04B28/344C04B2111/00844C04B2111/00939C04B2111/20C04B2111/28C04B2111/343C04B16/0691C04B22/064
Inventor 刘盼高涵彦张靖樊嘉杰张国旗
Owner GUANGHUA LINGANG ENG APPL & TECH R&D (SHANGHAI) CO LTD
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