Preparation method of nano composite aluminum oxide for filling rubber

Abstract

The invention discloses a preparation method of nano composite aluminum oxide for filling rubber and belongs to the technical field of inorganic chemical synthesis. The method comprises the following steps: firstly ball milling flyash, dissolving aluminum oxide contained in the flyash by using diluted hydrochloric acid to prepare filtrate; then taking maleic anhydride as a raw material and taking sodium tungstate as a catalyst to prepare epoxysuccinic acid; then taking calcium hydroxide as an initiator, adding diethylamine and the epoxysuccinic acid to form a polymer, then dropwise adding the filtrate into the polymer, precipitating aluminum ions and dispersing the aluminum ions in a three-dimensional network structure of the polymer; and finally calcining to prepare the nano composite aluminum oxide for filling the rubber. Through the preparation method of the nano composite aluminum oxide for filling the rubber, the macromolecular polymer prepared under the alkaline condition is used for uniformly precipitating the aluminum ions in the three-dimensional network structure of the polymer; aggregation of the nano aluminum oxide and aluminum nitride in the calcining process is avoided; the dispersion stability of the nano aluminum oxide is improved; the compatibility of the nano aluminum oxide with rubber matrix materials is improved; the problems that conventional nano aluminum oxide for filling the rubber is easy to aggregate and low in dispersibility are effectively solved.

Description

technical field [0001] The invention discloses a preparation method of nano-composite alumina for filling rubber, and belongs to the technical field of inorganic chemical synthesis. Background technique [0002] Alumina products have low density, transparency, soft structure, good printing performance, and a series of excellent characteristics such as high hardness, high strength, heat resistance, and corrosion resistance. Nano-alumina has better physical and chemical properties than ordinary alumina. Nano-alumina is an ultrafine particle with a size of 1nm to 100nm, which has strong volume effect, quantum size effect, surface effect and macroscopic quantum tunneling effect. [0003] One of the widest applications of nano-alumina is as a filling material for rubber. Its addition can greatly improve its hardness and wear resistance. This kind of filled composite polymer material has become an important field of polymer material research. However, nano-alumina powder is easy ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: aiming at the problem that the nano-alumina powder used in traditional rubber filling is easy to agglomerate and difficult to disperse evenly in the organic matrix, resulting in a decrease in the mechanical properties of the rubber material, a method of adding aluminum in fly ash is provided. A method for preparing nanocomposite alumina for filling rubber by mixing elements with self-prepared polymers after dissolution and calcining

The invention utilizes the macromolecular polymer prepared under alkaline conditions to uniformly precipitate aluminum ions in the three-dimensional network structure of the polymer, avoiding the agglomeration of nano-alumina and aluminum nitride during the calcination process, and improving its dispersion stability And the compatibility with the rubber matrix material effectively solves the problems of easy agglomeration and poor dispersion of nano-alumina used in traditional filling rubber