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

Patent metadata

Field	Value
Publication number	US-11597809-B2
Application number	US-202217666852-A
Country	US
Kind code	B2
Filing date	Feb 8, 2022
Priority date	Feb 8, 2021
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

Abstract

A method for preparing an aerogel comprising nano attapulgite and phenolic aldehyde and a method for preparing abrasion-resistant vehicle tire. 80-100 weight distributions of rubber, 3-8 weight distributions of SiO2.nH2O, 3-6 weight distributions of an anti-aging agent, 3-4 weight distributions of a heat stabilizer, 3-5 weight distributions of a compatibilizing agent, and 3-12 weight distributions of the aerogel comprising the nano attapulgite and the phenolic aldehyde is selected as a raw material of the abrasion-resistant rubber material to prepare rubber composite material for the abrasion-resistant vehicle tire.

First claim

What is claimed is:

1. 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.

2. The method according to claim 1 , wherein a ratio of the bisphenol A, the tetraethylenepentamine, the paraformaldehyde, and the 1,4-dioxane is 1 mol-4 mol: 1 mol-4 mol: 4 mol-16 mol: 100 mL-500 mL.

3. The method according to claim 1 , wherein:
a mass ratio of the original attapulgite and the ultrapure water is 1:5 to 1:30, and
the adding oxalic acid comprises adding the oxalic acid to a final concentration of 0.5-5 Mol/L.

4. The method according to claim 1 , wherein a mass ratio of the nano attapulgite and the monomer BA-TEPA is 0.05-0.5:0.05-0.5.

5. The method according to claim 4 , wherein a ratio of the nano attapulgite, the water-ethanol solution, and the formaldehyde is 0.05 g-0.5 g: 9 mL-11 mL:50μ-500 μL.

6. The method according to claim 1 , wherein the aging the gel to form the wet gel comprises aging the gel at 20-70° C. for 6-30 hours.

Assignees

• Univ Xiamen
• Cheng Shin Tire Xiamen Co Ltd

Inventors

• Dai Lizong
• Liu Xiaohui
• Cao Hesheng
• Chen Guorong
• Luo Weiang
• Yuan Conghui
• Zeng Birong
• Xu Yiting

Classifications

• C08J2201/048

  Elimination of a frozen liquid phase · CPC title

• C08J2405/08

  Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof · CPC title

• C08J9/28 Primary

  by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum · CPC title

• C08J9/0071

  Nanosized fillers, i.e. having at least one dimension below 100 nanometers · CPC title

• C08G73/0233 Primary

  Polyamines derived from (poly)oxazolines, (poly)oxazines or having pendant acyl groups · CPC title