Method for preparing calcium silicate nanowires in batches at low cost

A calcium silicate and nanowire technology, applied in the direction of silicate, alkaline earth metal silicate, etc., to achieve the effects of abundant raw material sources, low-cost batch preparation, and low cost
CN101798093AInactive Publication Date: 2010-08-11ANHUI UNIVERSITY OF TECHNOLOGY
3 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ANHUI UNIVERSITY OF TECHNOLOGY
Publication Date
2010-08-11
Estimated Expiration
Not applicable · inactive patent

Smart Images

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

Abstract

The invention provides a method for preparing calcium silicate nanowires in batches at low cost, belonging to the technical field of nano material preparation. The calcium silicate nanowires are composed of nanowires with diameter of 10-150nm, mean diameter being less than 100nm and length of 50mu m. The preparation method is characterized by mixing the mixture of calcium oxide and silica with water and then placing the mixture into a closed container to be uniformly stirred, preserving heat for 0-48h under the temperature of 150-300 DEG C and pressure of 1-10MPa, collecting aqueous solution with loose white substances after heat preservation and natural cooling, collecting flocculent loose white powder after drying the aqueous solution in an oven under the temperature of 100 DEG C, calcining the white powder in a muffle furnace for 1h under the temperature of 800 DEG C and collecting the flocculent loose white powder after natural cooling, namely the calcium silicate nanowires. In the method, the raw materials have rich sources and the products dispense with subsequent processing, therefore, the obtained calcium silicate nanowires have low cost and can be prepared in batches.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field:

[0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing calcium silicate nanowires in batches at low cost. Background technique:

[0002] Calcium silicate is a white powder with a melting point of 1540°C, hardly soluble in water and alkaline solution, and decomposed in acid. The structural unit of calcium silicate is silicon-oxygen tetrahedron, which has a chain structure and has a low thermal conductivity. It can be widely used in heat preservation and heat insulation technologies for industrial furnaces and high-temperature devices.

[0003] One-dimensional nanomaterials have good application prospects in the field of thermal insulation due to their small size and large surface area. Calcium silicate is prepared into a one-dimensional calcium silicate nanowire structure, which can produce nano-effects such as "zero convection" and "infinite long path" when made into thermal insul...

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