Polysilane type amino silane and preparation method

Abstract

The invention discloses polysilane type amino silane and a preparation method. The method comprises the following steps: S1, adding epoxy silane and amino silane in a molar ratio of (1-2) to 1 into areaction kettle under a nitrogen gas or inert gas protection condition, wherein the amino silane is silane containing primary amino; S2, heating to a reaction temperature and reacting under a stirringcondition until the amino silane completely reacts; and S3, cooling to obtain the polysilane type amino silane. According to the invention,the conventional amino silane is modified; the production raw materials are easily available; the reaction needs no solvent or catalyst; the reaction needs no separation, and waste is avoided; the production process is simple, safe and environmentally friendly; and the modified polysilane type amino silane can form higher crosslinking density on the surface of an inorganic material; and meanwhile, after being hydrolysed, the polysilane type amino silane can form a firmer covalent bond with hydroxyl on the surface of a base material, and is good in hydrophobicity, so that adhesion to the base material is improved under a high-humidity environment, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of aminosilane synthesis, in particular to a polysilane-type aminosilane and a preparation method. Background technique [0002] Traditional aminosilanes are often used in coatings, adhesives, sealants and other industries, but they are prone to yellowing. Traditional aminosilanes have primary amino groups, and the hydrophilicity of primary amino groups is relatively strong, which will affect Adhesion to the substrate in a high humidity environment for a long time shortens its service life. Moreover, primary amino groups are more likely to form hydrogen bonds, which will lead to higher viscosity in the production process and affect production and processing. Contents of the invention [0003] In view of the defects in the prior art, the purpose of the present invention is to provide a preparation method of polysilane-type aminosilane, which can improve the service life of traditional aminosilane under hig...

AI Technical Summary

Problems solved by technology

[0002] Traditional aminosilanes are often used in coatings, adhesives, sealants and other industries, but they are prone to yellowing. Traditional aminosilanes have primary amino groups, and the hydrophilicity of primary amino groups is relatively strong, which will affect Adhesion to the substrate in a high humidity environment for a long time shortens its service life

Moreover, primary amino groups are more likely to form hydrogen bonds, which will lead to higher viscosity in the production process and affect production and processing.

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