Preparation method of multi-purpose tin, iron and zirconium doped silicon dioxide microspheres

Abstract

The invention relates to the field of preparation of novel materials, and aims to provide a preparation method of multi-purpose tin, iron and zirconium doped silicon dioxide microspheres. The preparation method comprises the following steps: adding dibutyltin diacetate, ferric oleate, zirconium tetrachloride and tetraethylortho silicate in n-propanol, and stirring to obtain a mixture A; after uniformly mixing ricinoleic acid sodium sulfovinate, n-butanol and deionized water, adding the mixture into the mixture A, and stirring to obtain mixed liquid B; keeping adding lysine, and stirring to obtain mixed liquid C; and adding zinc chloride for demulsification, and centrifugally separating to obtain powder D, and carrying out heat treatment to obtain the multi-purpose tin, iron and zirconium doped silicon dioxide microspheres. By the powder of the invention, the shortcoming that an existing silicon dioxide high infrared emission wave band region is not superposed to an atmosphere window region is overcome, the multi-purpose tin, iron and zirconium doped silicon dioxide microspheres can be applied to a heat-insulation coating as effective infrared emission type filler, the infrared emitting ability of the multi-purpose tin, iron and zirconium doped silicon dioxide microspheres is greater than 0.94, and a new application field of a silicon dioxide powder material is opened up. The electrical property of a prepared silver-based conductive composite material is far higher than that of an existing product.

Description

technical field [0001] The invention relates to the field of preparation of new materials, in particular to a method for preparing multipurpose tin, iron and zirconium doped silica microspheres. Background technique [0002] Silica widely exists in nature, and its application is also extremely extensive, and can be used in glass, ceramics, construction, chemical industry, machinery, electronics and coatings and other fields. However, silica also has inherent defects that prevent it from being used in more fields: 1. In heat-insulating coatings, silica often exists as a barrier-type functional filler. The barrier ability can be significantly improved, and the high infrared emission properties of the thermal insulation coating can help the coating to reduce the surface temperature through infrared radiation heat exchange after absorbing heat, thereby improving the thermal insulation effect. If the high infrared emission area of ​​the coating is located in an area with weak at...

AI Technical Summary

Problems solved by technology

The high infrared emission (infrared emissivity > 0.8) band area of ​​silica is 4.5-8 μm, which does not overlap with the atmospheric window area (8-13.5 μm). Therefore, silica cannot be used as an effective infrared-emitting filler for insulation In thermal coatings; 2. In conductive composite materials, adding oxide reinforcement phase is beneficial to improve the arc corrosion resistance and welding resistance of conductive composite materials. For example, adding CdO to the Ag matrix can prepare excellent arc corrosion resistance, Conductive composite materials with welding resistance and low contact resistance, but the conductive composite materials made by adding silicon dioxide to the silver matrix as a reinforcing phase have high resistance and low electrical life, so silicon dioxide cannot be used as an effective reinforcing phase for conductive composites