PHYSICAL AND CHEMICAL MODIFICATION OF NATURAL MINERAL OF CHANKANAY DEPOSIT

The development of domestic rubber adhesion promoters based on mineral raw materials is a pressing task. The formation of a bond with high and stable strength in the elastomer-metal system always remains the focus of attention when creating new formulations and new ingredients. The introduction of nickel salts into the rubber mixture significantly increases the stability of the bond strength in the rubber-metal cord system under the influence of moisture, elevated temperature and sodium chloride, since in their presence the formation of weak boundary layers of ZnO/Zn(OH)₂ is delayed.

Interest in zeolites as fillers and adhesion promoters is caused by their ability not only to reduce costs, but also to impart qualitatively new useful properties to materials and products, and the ability to set or adjust these properties. The properties of any mineral raw material can be adjusted through modification. Thermal and chemical treatment of zeolites with solutions of acids, alkalis and salts allows modifying zeolites and purposefully changing their properties in relation to solving a particular problem. In this work, physical and chemical modification of zeolite from the Chankanai deposit was carried out. The cation exchange properties of natural zeolite Chankanai were studied. The ion exchange of the initial calcium cation was carried out with nickel cationite. The results of experimental and physicochemical analysis methods confirm the penetration of nickel ions onto the surface of the zeolite, which has a microhard structure. It was found that the degree of exchange of the Ca cation contained in the initial zeolite for Ni cations is insignificant.

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