| 摘要 |
<p>The invention relates to a method for preparing nanometric particles of m agnesium hydroxide, having an average diameter of between 90 and 110 nm or i n the 20 to 160 nm range and having monodispersion characteristics and stabi lity over periods longer than 12 months in a wide range of concentrations. T he method comprises three phases, namely: a reaction phase performed in two steps, i.e. a first maturation step carried out in a micromixed zone and a s econd purification step involving stabilisation of the suspension; a second phase in which the particles are matured using a chemical-mechanical treatme nt; and a third phase which is designed to purify and concentrate the materi al and to prepare said material for integration into the desired medium. The particles obtained can be redispersed in different media, such as alkyd, ph enolic, nitrocellulose, polyurethane, vinyl and acrylic resins, water, alcoh ols and a wide variety of organic materials and polymers such as high- and l ow-density polyethylene, nylon, ABS and/or mixtures thereof.</p> |
