(CO)POLYMER MATRIX COMPOSITES COMPRISING THERMALLY-CONDUCTIVE PARTICLES AND A NONVOLATILE DILUENT AND METHODS OF MAKING THE SAME
申请人:3M INNOVATIVE PROPERTIES COMPANY
公开号:US20220186030A1
公开(公告)日:2022-06-16
(Co)polymer matrix composites including a porous (co)polymeric network; a nonvolatile diluent, and a multiplicity of thermally-conductive particles distributed within the (co)polymeric network; wherein the thermally-conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the (co)polymer matrix (including the thermally-conductive particles and the nonvolatile diluent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 10% of its initial volume when exposed to a temperature of at least 135° C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, as fillers, thermal interface materials, and thermal management materials, for example, in electronic devices, more particularly mobile handheld electronic devices, power supplies, and batteries.
包括多孔聚合物网络;非挥发性稀释剂;以及在聚合物网络中分布的多热导颗粒的聚合物基复合材料。其中,热导颗粒的含量按聚合物基体的总重量(包括热导颗粒和非挥发性稀释剂)计,重量百分比范围为15%至99%。作为一种选择,所述的聚合物基复合材料的体积在暴露于至少135°C的温度时,膨胀至少10%的初始体积。还 disclosures 了制备和使用所述的聚合物基复合材料的方法。所述的聚合物基复合材料具有多种用途,例如作为散热或吸热材料,作为填料、热界面材料和热管理材料,尤其是在电子设备中,更具体地说是在手持式便携电子设备、电源和电池中。