Preparation method of superfine talc powder

An ultra-fine talc and pulping technology, applied in the directions of dyeing physical treatment, dyeing low-molecular-weight organic compound treatment, fibrous filler, etc. Improve the dispersion state, improve the interface affinity, and increase the effect of surface activity

Inactive Publication Date: 2014-03-26
YANGZHOU TIANLI NON METALLIC MATERIAL
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a big difference between talcum powder as an inorganic filler and organic polymer molecular materials in chemical structure and physical form, lack of affinity, so that the mixing between talcum powder and polymer is uneven and the adhesion Weak, resulting in a decrease in the mechanical properties of the product

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The first step is to crush the raw materials, that is, the talc ore mined from the mine is crushed by a crusher.

[0015] The second step is to grind the crushed raw materials into fine powder with a ball mill to make the materials reach 800 mesh.

[0016] The third step is adding water to the pulverized material to make a pulp, and the pulverized material is to add water to the pulverized material and stir, so that the solid content reaches 60%-80%.

[0017] The fourth step is to uniformly mix the silane coupling agent, ethanol and stearic acid according to the proportion of 1:3:4, add to the material after pulping, stir at 80-105°C for 30-60min and then cool down. In order to fully react, the talcum powder in the material can be modified, and the weight of the mixture of the silane coupling agent, ethanol and stearic acid is 3%-5% of the total weight of the pulped material after pulping.

[0018] The fifth step is to carry out wet ultrafine grinding on the above mate...

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 provides a preparation method of superfine talc powder. The preparation method has the effects of improving the interface affinity of the talc power and polymers and improving the disperse state of the talc powder filler in polymer base materials by carrying out surface modification on the talc powder. The preparation method comprises the following steps: 1) breaking raw materials; 2) milling the raw materials into fine powder with a ball mill; 3) adding water to the milled materials to prepare pulp; 4) after mixing a silane coupling agent, ethanol and stearic acid uniformly to obtain a mixture, adding the mixture to the pulped materials, stirring the materials at 80-105 DEG C for 30-60 minutes and then cooling the materials; 5) grinding the materials for 6-8 hours; and 6) drying the powder and collecting the product. The preparation method has the beneficial effects that the surface activity of the talc powder particles is improved, so that the process is simplified and the cost is reduced; the interface affinity of the talc power and the polymers is improved and the disperse state of the talc powder filler in the polymer base materials is improved, so that talc is well applied and the application field of talc is expanded.

Description

technical field [0001] The invention relates to an ultrafine pulverization method of nonmetallic minerals, in particular to a preparation method of ultrafine talcum powder. Background technique [0002] Talc powder is used as a filler to fill organic polymer materials, which can improve the rigidity, dimensional stability and lubricity of products, prevent high temperature creep, reduce wear on molding machines, and improve hardness and creep resistance of polymers through filling. At the same time, it can also improve the thermal shock resistance of the polymer, and improve the molding shrinkage of the plastic, the flexural modulus of elasticity and the tensile yield strength of the product. With the development of modern industry, higher and higher requirements are put forward for the purity, whiteness and fineness of talc powder, especially ultra-fine talc powder, which is in great demand in domestic and foreign markets. However, there is a big difference between talcu...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/04C09C3/12C09C3/08
Inventor 赵军
Owner YANGZHOU TIANLI NON METALLIC MATERIAL
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