Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wollastonite fiber with large length-diameter ratio and preparation method thereof

A wollastonite fiber, high aspect ratio technology, applied in glass manufacturing equipment, manufacturing tools and other directions, can solve the problems of high processing cost, complex production process, difficult operation, etc., to achieve stable product quality, simple production process, The effect of low production cost

Inactive Publication Date: 2011-11-23
安徽绿能技术研究院有限公司
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent 201010109571 discloses a method of synthesizing calcium silicate hydrate under weak alkaline conditions by using calcium hydroxide and sodium silicate solution, then washing and drying, calcining in an inert atmosphere, and then using a coupling agent to process the powder Surface modification treatment, and finally fine processing to obtain wollastonite powder. The cost of artificially synthesized modified wollastonite fiber produced by this method is extremely high, which is 10-20 times higher than the processing cost of natural wollastonite. The product is mainly used for Electronics and other high-end industries are generally poorly popularized and applied
[0004] Chinese patent 200910042410 discloses a process technology of coating nano-calcium carbonate and applying a coupling agent to modify wollastonite fiber. The cost of wollastonite fiber produced by this technology is 3-10 times higher than that of natural wollastonite. times, the production process of the product is complicated, the operation is difficult, and the quality stability is difficult to control. It has not been promoted yet.

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
  • Wollastonite fiber with large length-diameter ratio and preparation method thereof
  • Wollastonite fiber with large length-diameter ratio and preparation method thereof
  • Wollastonite fiber with large length-diameter ratio and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of cationic modifier:

[0039] That is, add 100 grams of water to the reaction kettle in advance, add 116 grams of hexamethylenediamine and 101 grams of adipic acid into the reaction kettle, stir at a speed of 120 rpm, raise the temperature to 60 ° C, and react for 3 hours to obtain adipic acid and hexamethylenediamine Salt, the salt is the cationic modifier.

Embodiment 2

[0041] Preparation of wollastonite fiber with high aspect ratio:

[0042] a) Screening process: crushing the ore sample to obtain a primary product, and screening the primary product to obtain a wollastonite secondary product with a particle size of 100-150 mesh;

[0043] b) Treatment process: add cationic modifier in wollastonite secondary product, the weight ratio of cationic modifier and wollastonite secondary product is 1: 100, pretreated wollastonite secondary product , dried and dehydrated, then crushed to a particle size of 320-350 mesh, and classified according to the GB / T 1345-2005 standard;

[0044] c) Post-treatment process: analyze and test the graded wollastonite fibers, pack them into warehouses after passing the grade, and obtain cationic high-aspect-ratio wollastonite fiber products.

Embodiment 3

[0046] Except b) treatment process: adding a cationic modifier to the wollastonite secondary product, and the weight ratio of the cationic modifier to the wollastonite secondary product is 0.1:100, the rest is the same as that of embodiment 2.

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a wollastonite fiber with a large length-diameter ratio and a preparation method thereof. The fiber contains 100 parts of wollastonite and 0.1-1.5 parts of cation modifier. The preparation method comprises a screening process, a treatment process and a post-treatment process. Compared with the prior art, a hydroxyl radical on the surface of the wollastonite in the invention actively reacts with the functional group to which the cation modifier is added so as to form a cation group, thereby achieving synchronous accomplishment of smashing and modification and greatly improving whiteness, planeness, opacity and printability of paper. According to the invention, the product wollastonite fiber disclosed by the invention can replace at most 30% of plant fiber, thereby effectively maintaining the physical strength of the paper and reducing the production cost; and the production process is simple, the product quality is stable, and the production cost is low.

Description

technical field [0001] The invention relates to the field of modification of inorganic materials, in particular to a cationic wollastonite fiber with high aspect ratio and a preparation method thereof. Background technique [0002] At present, the ultra-fine products produced by non-metallic wollastonite through mechanical processing and modification technology are widely used as fillers or coatings for high-end products such as papermaking, rubber, plastics, ceramics, paints, cosmetics, and aerospace industries. [0003] Chinese patent 201010109571 discloses a method of using calcium hydroxide and sodium silicate solution to synthesize calcium silicate hydrate under weakly alkaline conditions, then washing and drying, calcining treatment in an inert atmosphere, and then using a coupling agent to process the powder. Surface modification treatment, and finally fine processing to obtain wollastonite powder. The cost of artificially synthesized modified wollastonite fiber produ...

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): C03B37/00
Inventor 昝向明
Owner 安徽绿能技术研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com