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Calcium phosphate-based cement potting material and preparation method thereof

The technology of a potting material and a manufacturing method is applied in the field of calcium phosphate-based cement potting materials and their manufacturing, and can solve problems such as cracks and the like.

Active Publication Date: 2021-04-13
GUANGHUA LINGANG ENG APPL & TECH R&D (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 preparation 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. Nano polyimide fibers are uniformly distributed in calcium phosphate-based cement, wherein the mass fraction of the nano polyimide fibers is 1%-10%. Calcium phosphate-based cement is used as a basic packaging material, so that the cost is reduced. The cost of the cement is lower than that of any existing system; the potting material system is resistent to high temperature and can resist a high temperature of 350 DEG C; the nano polyimide fibers are added, so that the hydration process of the cement is improved, and the porosity is reduced; after the cement is finally set, the water mist and salt mist resistance of the cement is improved while the possibility of crack formation is reduced.

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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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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