Coupling agent is a class of substances with amphoteric structure, a part of their molecules coupling agent is a class of substances with amphoteric structure, a part of their molecules can be divided into groups and inorganic surface chemical groups reaction, forming chemical bonds; The groups can react with the chemical groups on the inorganic surface to form chemical bonds;

Another part of the group has the nature of organic matter, but another part of the group with organic molecules has the nature of organic matter, can react with organic molecules or produce strong intermolecular action, which will be two totally chemical reaction or produce strong intermolecular action, which the nature of the two kinds of disparate materials tightly together, Improve the inorganic filler in the polymer matrix firmly combined with different materials, improve the dispersion of inorganic filler in the polymer matrix, improve the mechanical properties and usability of the polymer material in the dispersion of the polymer material, improve the mechanical properties and serviceability of the polymer material.