Novel clay modification method and method of preparing composite polymer material from the clay

Abstract

The invention relates to a novel clay modification method and a method of preparing a composite polymer material from the clay, comprising the following steps: 1) uniformly dispersing the clay into a paraffin oil to form a stable mixture; 2) activating surfaces of the clay through UV / O3 irradiation, reacting with a clay treating agent, introducing radical groups, wherein the clay is aluminosilicate mineral powder that main components are SiO2 and Al2O3, particle size is less than 200 meshes, and a structure is lamellar or a fibrous structure, including montmorillonite; mixing the prepared modified clay with a polymer, and preparing a nanometer composite material by means of solution mixing, in-situ polymerization or melt blending. The invention can introduce functional groups into the surface of the clay in a very simple and efficient way, so as to increase the compatibility and dispersity of the clay inside the polymer, thereby building a stronger interaction between the polymer and the clay filler, and preparing the nanometer composite material by means of melt blending, solution mixing or in-situ polymerization, without using any compatilizer.

Description

technical field [0001] The invention relates to a novel clay surface treatment method, which can activate the clay surface to enable efficient and convenient grafting of organic molecules, and control the types and grafting of organic molecules on the clay surface by designing the parameters of the reaction process. amount, so that the modified clay is suitable for the preparation of different kinds of polymer nanocomposites. Background technique [0002] In recent years, in order to improve the mechanical and gas barrier properties of polymers, many scientific research institutions and companies have tried to prepare polymer / clay nanocomposites. The clay sheet itself has excellent characteristics such as extremely high modulus and strength, and a large specific surface area. Adding it to the polymer in a suitable way can greatly improve the performance of the obtained product and expand its application field. However, the lamellar polarity of clay is very high, and the co...

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Problems solved by technology

Although these additives can improve the microscopic morphology of composite materials to a certain extent, the effect of enhancing modification is not significant, and also cause stability problems and increase production costs.

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