Foamed ceramic microspheres with core-shell structure and its preparation method and application

A technology of foam ceramics and core-shell structure, applied in the field of ceramic materials, can solve the problems of limited preparation methods, insufficient foaming, low porosity, etc., and achieve the effects of controllable and consistent growth, complete reaction, and good sound absorption
CN106007692BActive Publication Date: 2018-11-13陈虹
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
陈虹
Publication Date
2018-11-13

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for preparing core-shell structure foam ceramic microspheres: including silica sol configuration, silica sol gelation, preparation of silicate xerogel microspheres, water washing-surface aging treatment, washing and drying and high temperature Foaming process. The core-shell structure foam ceramic microspheres have a particle diameter of 0.3-5mm and an inner and outer layered structure. The outer layer of the microspheres is a ceramic sealed shell of 45-55μm. The surface of the ceramic sealed shell is composed of micron-sized particles and is polygonal. Aggregates, and the interval between adjacent polygonal aggregates is 0.8-1.2μm, and there are holes with a size of 80-120nm distributed at the intervals. There are a number of capillary channels distributed inside the holes, and the micron-sized particles are used as the core. Nanoparticles are deposited on the surface of the nanoparticles, and the specific surface area of ​​the microspheres deposited with nanoparticles is 3-4 orders of magnitude larger than smooth microspheres of the same diameter; the interior of the microspheres is a three-dimensional through-network microporous structure. There are sealed balls with a diameter of 0.2μm-0.5μm distributed inside the micropores.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a foamed ceramic microsphere with a core-shell structure and a preparation method and application thereof. Background technique

[0002] In the wave of global economic development and the rapid development of world industry, the environment and resources are the major problems encountered by human society. The requirements for saving resources and protecting the environment are getting higher and higher. Therefore, materials that adapt to this situation are It is very important and has positive significance to the development of society. Closed-cell foam ceramics is a new material that meets the development requirements of this situation. It can play a significant role in improving efficiency, saving resources, and protecting the ecological environment.

[0003] Foam ceramics is a kind of foam-like porous ceramics in shape. It is the third generation of por...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More