Additive for preparing suede on monocrystalline silicon chip and use method thereof

摘要

The invention provides an additive for preparing suede on a monocrystalline silicon chip, which comprises: polyethylene glycol, sodium benzoate, citric acid, hydrolytic polymaleic anhydride, sodium acetate and water. The invention also provides a suede preparation liquid for preparing suede on a monocrystalline silicon chip, which contains the foregoing additive for preparing suede on a monocrystalline silicon chip and an aqueous alkali in a mass ratio of 0.2-5:100, wherein the aqueous alkali is the aqueous solution of an inorganic or organic alkali. The invention also provides a method for preparing suede on a monocrystalline silicon chip, by using which suede can be prepared on the surface of a monocrystalline silicon chip with the foregoing suede preparation liquid.