▎ 摘　　要

NOVELTY - Ultra-thin flexible glass material comprises 51.2-64.5 wt.% silicon dioxide, 2.5- 7.5 wt.% aluminum oxide, 1.4-4.8 wt.% phosphorus pentoxide, 1.5-4.5 wt.% diboron trioxide, 1.5-3.5 wt.% tin oxide, 0.4-2.8 wt.% magnesium oxide, 0.3-3.5 wt.% cerium dioxide, 2.5-5.5 wt.% calcium oxide, 1.5-5 wt.% lithium oxide, 0.5-2.5 wt.% potassium oxide, 2.5-5.8 wt.% sodium oxide, 3.4-20.9 wt.% modified titanium dioxide. The preparation of the modified titanium dioxide comprises mixing the 3-4 pts. wt. tetrabutyl titanate, 4-5 pts. wt. absolute ethyl alcohol, adding 1.25-1.7 pts. wt. glacial acetic acid, stirring uniformly, adding 1.3-1.6 pts. wt. cobalt nitrate, stirring for 30-40 minutes, allowing to stand for 2-3 days at room temperature, drying, calcining for 4-5 hours at the temperature of 300-400 degrees C, and grinding, (2) adding 10-20 pts. wt. acid nickel solution, dipping for 3-5 hours under the 70-80 degrees C, drying, calcining for 2-3 hours under the 350-450 degrees C, and preparing modified titanium dioxide. USE - The ultra-thin flexible glass material is useful in mobile phone folding screen (claimed). ADVANTAGE - The ultra-thin flexible glass material has good antibacterial property, durable antibacterial property and oil stain resistance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for : (1) preparing ultra-thin flexible glass material comprising (1) preparing materials of the ultra-thin flexible glass material, (2) heating the phosphorus pentoxide, diboron trioxide, magnesium oxide, calcium oxide, lithium oxide, potassium oxide, sodium oxide to 1500-1800 degrees C, melting, performing homogenizing treatment, preparing glass liquid A, heating silicon dioxide, modified titanium dioxide, cerium dioxide, alumina and tin oxide to 1000-1500 degrees C, melting, performing homogenizing treatment, and preparing glass liquid B, (3) pouring the 1/2 amount of glass liquid B into the mold, allowing to standfor 2-3 hours, pouring the glass liquid A, allowing to stand for 2-3 hours, pouring the rest glass liquid B to obtain the casting glass, and (4) annealing the casting glass at 500-600 degrees C for 1-2 hours to obtain ultra-thin flexible glass material; and (2) preparing mobile phone folding screen comprising (1) cutting the ultra-thin flexible glass material into design size, cleaning, drying, and preparing glass substrate, (2) grinding the surface of the glass substrate by the grinding liquid with 5-10%, after cleaning, drying, the grinding liquid comprises rare earth and water in the mass ratio of 2-5: 5-15, the grain diameter of the rare earth is 1-2 mu m, (3) polishing the surface of the glass substrate by the polishing solution with 5-10 %, cleaning, drying, preparing mobile phone folding screen, where the polishing solution comprises ceramic powder and water with ratio of 2-5: 5- 15, and the grain diameter of the ceramic powder is 0.4- 0.6 mu m.