Low-thermal-resistance nano heat-conducting composition and preparation method thereof

• Main Author: DING XINGQIANG
• Format: Patent
• Language: English
• Published: 24.02.2016
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to the fields of electronic material products and preparation. The invention provides a low-thermal-resistance nano heat-conducting composition which comprises base grease, a nano heat-conducting filler, a surface treating agent and nano heat-conducting powder. A preparation method of the low-thermal-resistance nano heat-conducting composition comprises the following steps: A, preparing raw materials; B, putting nano heat-conducting powder at the temperature of 80-120 DEG C, and carrying out surface treatment on the nano heat-conducting powder by using a surface treating agent to obtain a mixture; D, taking out the mixture, and grinding the mixture by using a three-roll grinder; and E, adding the ground mixture into movable mixing equipment, adding residual base grease into the mixture to mix for more than one hour. The composition disclosed by the invention is low in thermal resistance and high in thermal conductivity, has a heat conductivity coefficient which can be higher than 6W/m.K at most, has thermal resistance being 0.008 DEG C * in /W@10psi, and has good heat-conducting effect. The preparation method is simple in process and low in preparation cost, can be used for large-scale popularization and production, and is beneficial to large-scale popularization and use of a low-thermal-resistance nano heat-conducting composition product.