Prepn process of superfine xonotlite fiber

A technology of tobermorite and fiber, which is applied in the field of preparation of ultrafine tobermorite fibers and can solve the problem of high cost

Inactive Publication Date: 2005-07-13
UNIV OF SCI & TECH BEIJING
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the currently prepared xonotlite fibers have a diameter of more than 200 nanometers. I

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Prepn process of superfine xonotlite fiber
  • Prepn process of superfine xonotlite fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Calcium raw materials and siliceous raw materials (the main particle size is 5--20μm, d 50 The main chemical composition is shown in Table 1.

[0018] Table 1 Chemical Composition of Raw Materials

[0019] raw material

SiO 2

Al 2 o 3

Fe 2 o 3

CaO

MgO

K 2 o

Na 2 o

TiO 2

Burn out

lime

5.14

0.60

0.23

87.35

5.39

0.07

0.07

0.01

0.52

Powder Quartz

99.01

0.07

0.05

0.02

0.01

0.02

0.04

0.01

0.64

[0020] 1. Digest the lime in water at 40°C and soak it for 10 days to convert it into Ca(OH) 2 , and then pass through a 200-mesh sieve to remove impurities. Determination of effective CaO content. The method is to stir the clarified lime slurry evenly, first use a specific gravity meter to measure its specific gravity, then take 50ML of mortar and put it in a conical flask, an...

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

PUM

No PUM Login to view more

Abstract

The present invention belongs to the field of inorganic non-metal material, and is especially the preparation process of superfine xonotlite fiber. The present invention adopts natural quartz powder as silicon material, common lime as calcium material and zirconium oxychloride as additive. The preparation process includes slaking lime in water over 40 deg.c into Ca(OH)2, 200-mesh sieving, adding quartz powder in the Ca/Si molar ratio in slurry of 0.94-0.99, adding zirconium oxychloride and water in the molar ratio between Zr ion and Ca ion plus Si ion of 0.01-0.07 and water/solid weight of 1 to 20-40; heating the compounded slurry in high pressure reactor to 190-220 deg.c while stirring and maintaining the temperature for 3-8 hr under stirring and pressure of 1.7-2.4 MPa; cooling and stoving to obtain superfine xonotlite fiber. The present invention has simple technological process, low material cost and wide application foreground.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, in particular to a preparation method of ultrafine xonotlite fibers. technical background [0002] At present, the representative inorganic fibers are mainly asbestos and glass fiber, but asbestos is gradually abandoned due to its harmfulness, and glass fiber is not suitable for use in environments above 500 °C. At the same time, the cost of glass fiber is high. Xonotlite fiber has the characteristics of high temperature resistance above 800°C, large specific surface area, and large surface energy, resulting in small size effects, surface or interface effects, quantum size effects, macroscopic quantum tunneling effects, etc., in terms of chemical and physical properties exhibit specificity. [0003] The hydrothermal dynamic method is an advanced method in the production of xonotlite secondary particles. At present, most developed countries adopt this process to produce xonotlite....

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

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C03B37/00C03B37/01
Inventor 倪文陈淑祥朱林董文辉
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap