Flash evaporation material with low haze attenuation rate

A flash evaporation material, wherein a raw material of the flash evaporation material comprises polyethylene, and a grammage of a flash spun non-woven fabric is greater than 35 g/m2,

• a compression specific power (P) of the flash evaporation material is greater than 0.07 gf·cm/cm2;
• the compression specific power is tested by a Kawabata Evaluation System (KES) style tester, and the compression specific power is tested by FB3;
• a haze attenuation rate (ΔW) of the flash evaporation material is 0.3%-1.5%;
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• an attenuation rate (ΔS) of a heat shielding rate of the flash evaporation material is 7%-15%;
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• tests for the heat shielding rate, a haze and a transverse tensile strength comprise the following steps:
• (1) placing a sample at 25° C. and a relative humidity of 65% for 24 hours;
• then measuring and recording a shading index of the sample as an initial heat shielding rate (S0), measuring and recording the haze of the sample as an initial haze (W0), and measuring and recording the transverse tensile strength of the sample as an initial transverse tensile strength (CTS0);
• (2) then exposing the sample to a dry and hot atmosphere of 90° C. for 6 hours, and then cooling at 25° C. and a relative humidity of 65% for 24 hours;
• (3) repeating the step (2), and after treatment for 4 times, measuring and recording the shading index of the sample as a final heat shielding rate (S5), measuring and recording the haze of the sample as a final haze (W5), and measuring and recording the transverse tensile strength of the sample as a final transverse tensile strength (CTS5);
• the haze is tested according to national standard GB/T2410-2008;
• and
• the heat shielding rate is measured according to national standard GB/T41560-2022.