Superhydrophobic hydrotalcite(SP-LDH)was prepared by the gel-sol method,followed by the preparation of low-density polyethylene(LDPE)composite agricultural films by internal addition method.The characterization results of scanning electron microscopy,transmission electron microscopy and FTIR showed the successful preparation of SP-LDH.SP-LDH retained the structural characteristics of the original LDH,and showed superhydrophobic properties(water contact angle was 161.5°).When SP-LDH was added at 5％,the prepared LDPE-LDH composite film had the highest water contact angle(112.6°)and the lowest surface energy(8.39 mN/m),exhibiting excellent dust removal(82.29％).In addition,LDPE composite films had good light transmission,thermodynamic stability and thermal insulation properties.These results suggested that SP-LDH could be added to LDPE films as a functional additive to impart additional hydrophobic,thermal and dust protection properties to the films.The prepared LDPE-LDH composite film has great potential for application in installment agriculture.
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