Preparation method of bentonite modifier

Abstract

The invention relates to preparation of a modifier, especially to a preparation method of a bentonite modifier. The method comprises the steps of: (1) acquiring a raw material: mixing hexadecyl tertiary amine with octadecyl tertiary amine in a mass ratio of 1-5:5-8 to obtain a raw material mixture; (2) adding water that is 1-1.5 times the total mass of the raw material mixture into the raw mixture, and performing stirring to obtain a reaction initial solution; (3) adding 55-65DEG C water into the reaction initial solution under stirring, and performing stirring to obtain a reaction solution; and (4) introducing chloromethane into the reaction solution, maintaining the solution temperature at 80-85DEG C, then conducting stirring for 50-75mim, thus obtaining the modifier. The preparation method provided by the invention has the advantages of high yield, fast response, no use of organic solvent, no generation of high COD content wastewater, no environmental pollution, low production cost, and high safety, also solves the defects that when the temperature is below 20DEG C, the modifier solidifies into solid, is inconvenient for production, and affects processing efficiency, and the modifier has better stability.

Description

technical field [0001] The invention relates to the preparation of a modifier, in particular to a preparation method of a bentonite modifier, and belongs to the field of bentonite production. Background technique [0002] Bentonite, also known as montmorillonite, is a mineral mainly composed of montmorillonite. The main component of montmorillonite is complex silicate. The mineral is an inorganic substance with a natural nanoscale layer spacing, and the layer spacing is about tens of nanometers. It has special water absorption, water plasticity, cohesiveness and strong ion exchange. It is the most widely used and economical mineral. One of the clay minerals with high value, it has been widely used in various fields such as metallurgy, machinery, petroleum, chemical industry, polymer materials and environmental protection. However, due to the surface activation of bentonite micropowder, there are problems in its compatibility and dispersion in the polymer matrix. [0003] ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of bentonite modifier, which solves the problems of high COD of waste water, low cost and production safety, not only makes the distance between layers of bentonite large, but also improves its hydrophobicity, thereby strengthening Ability to remove organic matter

In addition, it also solves the problem that the modifier solidifies into a solid when the temperature is lower than 20°C during use, which is not convenient for production and processing, and there are safety hazards in the preparation process and high cost.