Binder composition, microwave dielectric ceramic granules, ceramic and ceramic filter

The invention relates to a binder composition for microwave dielectric ceramic injection molding, the composition comprises a main binder, a skeleton binder, a lubricant and a plasticizer, the main binder comprises polyformaldehyde, and the melt index of the polyformaldehyde under the condition of 190 DEG C/2.16 kg is 120-250 g/10 min, preferably 150-220 g/10 min. According to the binder composition provided by the invention, the polyformaldehyde is used as a main binder, and the polyformaldehyde has a relatively high melt index, so that the binder composition can still enable the microwave dielectric ceramic granules to have relatively high flowability under the condition of relatively high addition amount; a green body obtained by injection molding of the microwave dielectric ceramic granules is uniform in texture and high in consistency, so that the quality stability of a microwave dielectric ceramic product can be remarkably improved. 本公开涉及一种用于微波介质陶瓷注射成型的粘结剂组合物，该组合物包括主粘结剂、骨架粘结剂、润滑剂和增塑剂，其中，所述主粘结剂包括聚甲醛，所述聚甲