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首页> 外文会议>Electronic Components and Technology Conference, 1990. ., 40th >Materials/processing approaches to phase stabilization of thermally conductive pastes
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Materials/processing approaches to phase stabilization of thermally conductive pastes

机译：导热膏相稳定的材料/加工方法

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Previously reported thermally conductive pastes based on simple dispersions of boron nitride particles in mineral oil were observed to undergo phase separation when stressed thermal-mechanically. Such stressing of thermal pastes was carried out to simulate the mechanical shearing action imposed on such pastes as a result of the anticipated differential motion of contacted heat-transfer surfaces and the paste during transient heating/cooling in various cooling assemblies. In the present work, the tendency of thermally conductive pastes to phase-separate during such simulated functional use was eliminated and given attributes of reworkability and corrosion inhibition by a combination of several approaches. These included: (1) the use of surface modification agents such as coupling agents and/or polymers on boron nitride particles: (2) milling conditions employed; and (3) the selection of novel oily and oxidation-resistant vehicle material systems to interact with the modified particle surfaces while preventing corrosion of contacted metallic surfaces.
机译：观察到先前报道的基于氮化硼颗粒在矿物油中简单分散的导热膏在受到热机械应力时会发生相分离。进行热糊剂的这种应力以模拟由于在各种冷却组件中进行瞬时加热/冷却期间接触的传热表面和糊剂的预期的差动运动而施加在这种糊剂上的机械剪切作用。在本工作中，消除了导热膏在这种模拟功能使用过程中发生相分离的趋势，并通过几种方法的组合赋予了返工性和缓蚀性能。这些措施包括：（1）在氮化硼颗粒上使用表面改性剂，例如偶联剂和/或聚合物：（2）采用的研磨条件; （3）选择新型的油性和抗氧化性的载体材料体系，以与改性的颗粒表面相互作用，同时防止接触的金属表面的腐蚀。

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