| abstract |
The present invention provides a kind of coolant liquid for hydraulic gear pump, the coolant liquid, in parts by weight, including following components: 400 parts of ethylene glycol, 1 part of two methylenephosphonic acid of glycine, 0.5 part of ursolic acid, 2- phosphate butane -1, 2, 3 parts of 4- tricarboxylic acids, 6 parts of 2- di guanidine-acetic acid, simultaneously 2 parts of triazole of methyl, β-(3, 5- di-tert-butyl-hydroxy phenyl) 0.5 part of propionic acid isoctanol ester, 0.4 part of modified additive, 50 parts of phase-change material micro-capsule, 600 parts of deionized water, 7 parts of dispersing agent, 0.1 part of defoaming agent, the preparation method of above-mentioned coolant liquid is also provided, coolant liquid prepared by the present invention, with antifreezing effect, antifreeze temperature is -20 DEG C.Coolant liquid prepared by the present invention is small to the corrosion of the cooling system of metal material；Coolant liquid prepared by the present invention, accumulation of heat, thermal conductivity are good, avoid generating local hot spot, for the cooling of hydraulic gear pump, to the good cooling effect of Power Component. |