Method for preparing nano attapulgite and phenolic aerogel and method for preparing abrasion-resistant vehicle tire

A method for preparing an aerogel comprising nano attapulgite and phenolic aldehyde, comprising:

• (1) dispersing bisphenol A, tetraethylenepentamine, and paraformaldehyde in 1,4-dioxane, stirring in an ice bath for 0.8-1.2 hours, heating to room temperature, continually stirring for 4-12 hours to obtain a monomer BA-TEPA, wherein a structural formula of the monomer BA-TEPA is as follows:
• (2) dispersing original attapulgite in ultrapure water, stirring for 0.8-1.2 hours, then adding oxalic acid, hydrothermally processing at 120-160° C. for 2-8 hours, then thermally processing at 80-140° C. for 10-40 hours, washing to neutrality to obtain nano attapulgite;
• (3) sonicating to disperse the nano attapulgite prepared in step (2) in a 50/50 (vol/vol) water-ethanol solution, then adding chitosan and acetic acid, stirring for 20-25 hours, then adding the monomer BA-TEPA prepared in step (1), stirring to even, then adding formaldehyde, stirring for 2-4 minutes, then leaving to stand to form a gel, and finally aging the gel to form a wet gel;
• and
• (4) after substituting the wet gel prepared in step (3) with a solvent with a volume ratio of ethanol and water of 1-3:100 for 3-4 days, freeze-drying to obtain the aerogel comprising the nano attapulgite and the phenolic aldehyde.