Sensitive ink for high-sensitivity coefficient strain gauge, sensitive ink printed strain gauge and preparation method of sensitive ink printed strain gauge

The invention discloses sensitive ink for a strain gauge with a high sensitivity coefficient, a sensitive ink printing strain gauge and a preparation method thereof, the sensitive ink comprises the following components in parts by weight: 10-50 parts of a binding agent, 1-30 parts of a carbon filler, 1-10 parts of a dispersing agent, 1-10 parts of a thickening agent, 1-10 parts of a defoaming agent and 20-60 parts of distilled water or deionized water, and the sensitive ink is obtained by uniformly mixing the components. And standing the sensitive ink for 0.5-5 hours, printing the sensitive ink on the polyimide film in a silk-screen printing or ink printing manner, and curing the sensitive ink at 120-180 DEG C for 0.1-8 hours after the sensitive ink is initially dried to obtain the sensitive ink printed strain gauge. The printing ink strain gauge prepared from the sensitive ink has a high sensitivity coefficient, is easy for large-scale printing, and can realize automatic manufacturing. 本发明公开了一种用于高灵敏系数应变计的敏感油