Anti-yellowing melt-blown fabric and preparation method thereof

The invention discloses a preparation method of an anti-yellowing melt-blown fabric. The preparation method comprises the steps of preparation of melt-blown polypropylene master batches, mixing, melting, drafting and lapping, and corona electret treatment. The prepared anti-yellowing melt-blown fabric has the advantages that the light transmittance is 83%-87%; the longitudinal tensile strength ranges from 70 MPa to 78 MPa, and the transverse tensile strength ranges from 75 MPa to 80 MPa; the longitudinal elongation at break is 220%-230%, and the transverse elongation at break is 280%-290%; the longitudinal flexibility is 122 mN to 125 mN, and the transverse flexibility is 153 mN to 158 mN; and the anti-yellowing melt-blown fabric has relatively high anti-yellowing capacity, and after three months of tests, the whiteness of the anti-yellowing melt-blown fabric is reduced to 5.4%-6.5%. 一种抗黄变熔喷布的制备方法,包括熔喷聚丙烯母粒的制备、混合、熔融、牵伸铺网、电晕驻极。制备的抗黄变熔喷布的优点包括：透光率为83%-87%；纵向拉伸强度为70MPa-78MPa，横向拉伸强度为75MPa-80MPa；纵向断裂伸长率为220％-230%，横