It is necessary to hydrolyze alkoxy groups into hydroxide groups before the silane coupling agent is coated on the surface of glass cloth . Then the hydroxide groups will form covalent bonds with the surface 's hydroxide groups .

矽烷偶合剂欲涂布於玻璃纤维表面时，需先将烷氧基水解成氢氧基后，方能与玻纤表面之氢氧基形成共价键结。