The invention relates to a negative
ion functional
chip, a preparation method and a negative
ion sanitary napkin. The preparation method of the negative
ion functional
chip comprises the following steps: uniformly adding 1-10 parts by weight of
tourmaline powder, 1-10 parts by weight of medical stone
powder, 0.5-1.5 parts by weight of carbomer or
safflower seed gum, 5-15 parts by weight of carboxylated
calcium lignosulphonate, 0.02-0.1 part by weight of
copper citrate and 0.01-0.05 part by weight of
silver citrate, 0.2-0.5 part of a nanometer
titanium dioxide
composite material into 50-120 parts of deionized water, performing stirring for 5-15 min at the rotating speed of 100-400 r / min, performing even mixing to obtain negative ion finishing liquid; putting a
chip in the negative ion finishing liquid at the temperature of 40-50 DEG C to be soaked, the
mass ratio of the chip to the negative ion finishing liquid being 1: (310), and the soaking time being 20-50 min; and then performing
drying at a temperature of 40-60 DEG C for 1-5h to obtain the negative ion functional chip. The negative ion functional chip and the
sanitary napkin prepared by the invention have the functions of instant absorption and
softening, also have the effects of lasting bacteriostasis and anion release, and can dredge qi and blood,
resist bacteria, diminish
inflammation and relieve menstrual discomfort symptoms.