The invention discloses a method for preparing high-temperature resistant anti-
corrosion ablation microfiber, and belongs to the technical field of high-temperature
filtration and
ablation material preparation. The method comprises the following steps: 1, performing thermal acid leaching, namely, artificially crushing alkali-free
glass fiber cotton of which the
single fiber diameter is less than 1 [mu] m, soaking into a 2.5 mol / L acid solution, and stirring in two directions at a speed of 30-300 rpm; 2, performing
water washing percolation, namely, firstly, washing a great amount of an acid liquid, adsorbed in the
fiber cotton, with cold water, further washing with hot water and cold water respectively, testing acid residues on the surface of the
fiber cotton by using extensive
pH indicator paper of which the pH value is 1-14, and till the pH value is greater than 5, stopping washing; and 3, performing
thermal treatment,
drying the
fiber cotton washed with water, and determining whether
sintering is implemented or not according to application situations. The high-temperature resistant anti-
corrosion ablation microfiber is high in high
temperature resistance, high in
corrosion resistance, rich in porous texture, excellent in separation and
filtration effect, high in technical level, high in ablation property, low in cost and relatively good in prospect in market application.