Preparation method of nano calcium carbonate with low viscocity and high thixotropic property

A nano-calcium carbonate, high thixotropic technology, applied in nanotechnology, non-polymer adhesive additives, dyed low molecular organic compound treatment and other directions, can solve the problems of poor dispersion, low viscosity, high viscosity, achieve low viscosity, Great thixotropy, cost reduction effect

Inactive Publication Date: 2011-08-24
淄博嘉泽纳米材料有限公司
View PDF4 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing nano-calcium carbonate with low viscosity and high thixotropy, aiming at the disadvantages

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
  • Preparation method of nano calcium carbonate with low viscocity and high thixotropic property

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1:

[0016] The calcium carbonate ore is cleaned and then calcined at 1000°C. After the product is purified, digested and aged, water is added to prepare a 10% calcium hydroxide slurry, which is transferred to the membrane dispersion carbonization reactor, and the relative calcium hydroxide is added Sucrose 0.5% by weight of calcium hydroxide in suspension. Inject a mixture of carbon dioxide and air with a volume fraction of carbon dioxide of 30% for carbonization synthesis at 17°C by high-gravity method. When the pH drops to 6.8, continue to ventilate for 10 minutes to obtain nano-calcium carbonate slurry. Select a three-hour meter per 100ml A nano calcium carbonate slurry with an apparent sedimentation volume of 85-99ml. Water was added to adjust the weight fraction of the nano calcium carbonate slurry to 10%, and 1000 g of the nano calcium carbonate slurry was taken, and the temperature was raised to 80° C. and stirred for 10 minutes. Weigh 3g of carboxysteari...

Example Embodiment

[0017] Example 2:

[0018] The calcium carbonate ore is cleaned and then calcined at 1000°C. After the product is purified, digested and aged, water is added to prepare a 10% calcium hydroxide slurry, which is transferred to the membrane dispersion carbonization reactor, and the relative calcium hydroxide is added 0.5% beet sugar by weight of calcium hydroxide in suspension. A mixture of carbon dioxide and air with a volume fraction of carbon dioxide of 30% is introduced at 17℃ for carbonization synthesis by membrane dispersion method. When the pH drops to 6.8, continue to ventilate for 10 minutes to obtain nano-calcium carbonate slurry. Select a three-hour meter per 100ml A nano calcium carbonate slurry with an apparent sedimentation volume of 85-99ml. Water was added to adjust the weight fraction of the nano calcium carbonate slurry to 10%, and 1000 g of the nano calcium carbonate slurry was taken, and the temperature was raised to 80° C. and stirred for 10 minutes. Weigh 1.5...

Example Embodiment

[0019] Example 3:

[0020] The calcium carbonate ore is cleaned and then calcined at 1000°C. After the product is purified, digested and aged, water is added to prepare a 10% calcium hydroxide slurry, which is transferred to the membrane dispersion carbonization reactor, and the relative calcium hydroxide is added 0.5% maltose based on the weight of calcium hydroxide in the suspension. A mixture of carbon dioxide and air with a volume fraction of carbon dioxide of 30% is introduced at 17℃ for carbonization synthesis by membrane dispersion method. When the pH drops to 6.8, continue to ventilate for 10 minutes to obtain nano-calcium carbonate slurry. Select a three-hour meter per 100ml A nano calcium carbonate slurry with an apparent sedimentation volume of 85-99ml. Water was added to adjust the weight fraction of the nano calcium carbonate slurry to 10%, and 1000 g of the nano calcium carbonate slurry was taken, and the temperature was raised to 80° C. and stirred for 10 minutes....

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 invention relates to a preparation method of nano calcium carbonate, and in particular relates to a preparation method of nano calcium carbonate with low viscocity and high thixotropic property. The method comprises the following steps: calcining, purifying and digesting the preferential limestone; controlling carbonization in a reactor to obtain the nano calcium carbonate rawstock; performing composite surface modification treatment on the rawstock by use of fatty acid or fatty acid derivatives and a coupling agent through a practical control process; and finally performing dehydration, drying, crushing and classification. The invention has the advantages that: the method is reasonable and reliable, ensures stable product quality, is favorable for continuous operation of production, and reduces the cost. The product produced by the method has low viscosity, high thixotropic property and good system compatibility and storage stability, and is applicable to the polymer systems such as polyurethane systems, epoxy systems, acrylic acid systems, amino resin sealants and the like.

Description

technical field [0001] The invention relates to a preparation method of nano calcium carbonate, in particular to a preparation method of nano calcium carbonate with low viscosity and high thixotropic performance. Background technique [0002] Nano-calcium carbonate refers to ultra-fine calcium carbonate powder with a particle size of less than 100nm, while active nano-calcium carbonate refers to a chemical product that changes from hydrophilic to lipophilic after surface organic treatment of nano-calcium carbonate. It has good compatibility and dispersion in the polymer matrix, and is widely used in the fields of plastics, rubber and adhesives. The active nano-calcium carbonate used in adhesives and sealants not only has a good reinforcing effect, but also can adjust the rheological properties of the product, and solve the defects of easy flow, poor extrudability and low strength caused by ordinary calcium carbonate. , a large number of expensive fumed silica, with high pra...

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): C09C1/02C09C3/08C09J11/04B82Y40/00
Inventor 娄从江李常林赵婷婷郭安慧陈祥芝朱孝川
Owner 淄博嘉泽纳米材料有限公司
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