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

Easily secondarily modified polydopamine coated modified calcium carbonate powder with high reaction activity and preparation method of powder

A high-reactivity, calcium carbonate powder technology, applied in chemical instruments and methods, dyeing polymer organic compound treatment, inorganic pigment treatment, etc., can solve the problems of insufficient additional functions, achieve dispersibility and surface affinity improvement, Wide range of use, cost-effective effect of the product

Inactive Publication Date: 2017-04-26
QINGYANG COUNTY YONGCHENG CALCIUM IND
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Research on Ground Calcium Carbonate Powder Modified by Stearic Acid-Titanate Coupling Agent" uses stearic acid and titanate coupling agent as composite modifier, absolute ethanol as dispersant, and adopts wet ball milling The powder is modified to achieve a relatively ideal modification effect, but the product prepared by this method is a hydrophobic product, which is limited in the application of water-based ink and water-based paint, and the additional functions are insufficient, which is limited to reinforcement For toughening, further modification is required to broaden its scope of use

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

[0011] A polydopamine-coated modified calcium carbonate powder with high reactivity and easy secondary modification. The modified calcium carbonate powder is made of the following raw materials in parts by weight: calcium carbonate 50, titanate coupling agent 2, no Water ethanol 60, dopamine hydrochloride 4, Tris-HCl buffer 60 with a pH value of 8.

[0012] The preparation method of this embodiment powder comprises the following steps:

[0013] (1) First put dopamine hydrochloride into TrisHCl buffer solution, stir until it is completely dissolved, then add calcium carbonate, mix and grind for 20 minutes, then let it stand for modification for 25 hours, then wash the system twice with water, and dry the system after the treatment, the obtained powder Body spare;

[0014] (2) Put the powder prepared in step (1) together with the titanate coupling agent into absolute ethanol, ball mill for 20 minutes, then dry with hot air, completely remove the solvent, grind and disperse to o...

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
oil absorption valueaaaaaaaaaa
Login to View More

Abstract

The invention discloses easily secondarily modified polydopamine coated modified calcium carbonate powder with high reaction activity. A polydopamine film is modified on the surface of calcium carbonate, the surface of the polydopamine film contains a large number of active functional groups, more possibility is provided for further modification of the calcium carbonate powder, the modified powder is modified by titanate coupling agents, modification effects are more excellent, oil absorption, dispersibility and surface affinity of the obtained calcium carbonate powder are effectively improved, reaction activity with various systems is higher, and the powder is more economical and efficient and wider in use range.

Description

technical field [0001] The invention relates to the technical field of inorganic powder surface modification, in particular to a polydopamine-coated modified calcium carbonate powder with high reactivity and easy secondary modification and a preparation method thereof. Background technique [0002] Calcium carbonate is a very common inorganic powder filler. It has the advantages of low price, non-toxic and tasteless, high whiteness and good hardness. It is widely used in rubber products, papermaking, ink, plastics, coatings and other fields. However, , calcium carbonate is essentially an inorganic mineral, which has poor affinity and compatibility with organic substances. Direct filling will lead to serious deterioration of product performance and severely limited scope of use. Therefore, calcium carbonate powder needs to be adjusted in practical applications. Modified treatment. [0003] At present, the main modification methods include mechanical refinement, surface modif...

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): C09C1/02C09C3/08C09C3/10
CPCC09C1/021C09C3/006C09C3/08C09C3/10
Inventor 陈永忠
Owner QINGYANG COUNTY YONGCHENG CALCIUM IND
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