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Multi-dimensional heat-conducting property testing system and testing method thereof

A test method and thermal conductivity technology, which is applied in the field of multi-dimensional thermal conductivity test system, can solve problems such as the inability to measure the thermal conductivity of anisotropic thin films, and achieve an easy-to-achieve effect

Pending Publication Date: 2022-04-08
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0005] In view of this, this application provides a multi-dimensional thermal conductivity test method to solve the problem that the existing test methods cannot accurately measure the thermal conductivity of anisotropic films

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  • Multi-dimensional heat-conducting property testing system and testing method thereof
  • Multi-dimensional heat-conducting property testing system and testing method thereof
  • Multi-dimensional heat-conducting property testing system and testing method thereof

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Embodiment Construction

[0034] The inventors have found that the steady-state method cannot meet the thermal conductivity test of the composite film, and most of the transient methods cannot meet the test requirements of the composite film interface thermal conductivity. The Raman method in the transient method can test the thermal conductivity of low-dimensional materials, but the Raman method is mainly based on the determination of the Raman characteristic peak frequency of low-dimensional materials. However, for the composite film of the metal matrix, due to the metal material Without the existence of Raman characteristic peaks, this method cannot realize the measurement of anisotropic thermal conductivity of metal substrates. In addition, the Raman method cannot realize the thermal conductivity test of anisotropic thin film and the thermal conductivity test of the interface between composite phases.

[0035] Time-domain thermal reflectance (TDTR) is another method for measuring thermal conductivi...

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Abstract

The invention discloses a multi-dimensional heat-conducting property testing method and a testing system thereof.The testing method adopts a laser time domain heat reflection measuring method to measure heat conductivity and comprises the steps that the target direction corresponding to the heat conductivity to be measured serves as the heat sensitive direction; the heat sensitive direction is the main direction of heat flow generated by the detected sample under the irradiation of the pump light; and heat conductivity measurement is carried out in the heat conduction mode corresponding to the heat sensitive direction so as to obtain the heat conductivity in the target direction, and different heat conduction modes correspond to different heat sensitive directions.

Description

technical field [0001] The present application relates to the technical field of thermal conductivity testing, in particular to a multi-dimensional thermal conductivity testing system and a testing method thereof. Background technique [0002] With the continuous development of microelectronics and semiconductor technology, electronic devices continue to develop in the direction of miniaturization, integration and intelligence, which makes the requirements for thermal management materials continue to increase. Multi-phase composite films can integrate excellent physical properties such as high thermal conductivity and adjustable thermal expansion coefficient and mechanical properties such as high stiffness, high strength, and high toughness, so as to meet the demanding requirements of different electronic packaging. A number of composite film matrices and reinforcement phases. Among them, the reinforcement phase has the characteristics of high thermal conductivity and low th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
Inventor 刘悦王晶晶刘玉菲杨昆明范同祥
Owner SHANGHAI JIAO TONG UNIV