The present invention provides: a composition for low thermal expansion members, which is capable of forming a low thermal expansion member that has a thermal expansion coefficient close to those of the members within a semiconductor element, while having high heat resistance and high heat conductivity; and a low thermal expansion member. A composition for low thermal expansion members according to the present invention is characterized by containing: a heat conductive first inorganic filler 1 that is bonded to one end of a first coupling agent 11; and a heat conductive second inorganic filler 2 that is bonded to one end of a second coupling agent 12. This composition for low thermal expansion members is also characterized in that the first inorganic filler 1 and the second inorganic filler 2 are bonded to each other via the first coupling agent 11 and the second coupling agent 12 by means of a curing treatment.
本发明提供:一种用于低热膨胀构件的组合物,该组合物能够形成低热膨胀构件,该构件的热膨胀系数接近半导体元件内构件的热膨胀系数,同时具有高耐热性和高导热性;以及一种低热膨胀构件。根据本发明的低热膨胀构件组合物,其特征在于含有:与第一耦合剂 11 的一端粘合的导热第一无机填料 1;以及与第二耦合剂 12 的一端粘合的导热第二无机填料 2。这种用于低热膨胀构件的组合物的另一个特点是,第一无机填料 1 和第二无机填料 2 通过第一
偶联剂 11 和第二
偶联剂 12 经固化处理相互粘结在一起。