Preparation method of nano calcium carbonate for MS glue

A nano calcium carbonate, calcium hydroxide technology, applied in the direction of calcium carbonate/strontium/barium, chemical instruments and methods, adhesives, etc., can solve the problem of poor compatibility between calcium carbonate and MS glue, poor tensile strength and elongation at break , poor processing performance and other problems, to achieve low oil absorption value, eliminate surface energy, prevent the effect of agglomeration

Inactive Publication Date: 2019-04-19
卢氏国嵩莱纳米科技有限公司
View PDF7 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent "A Preparation Method of Rice Granular Light Calcium Carbonate" with application number 201810103098.1 introduces a preparation method of rice granular light calcium carbonate, including digestion, aging, carbonization and other steps, but it is applied to this There are problems when the invented MS glue is used: the rice granular crystal form is not suitable for MS glue, and the rice granular calcium carbonate is used for MS glue with poor thixotropy, poor tensile strength and elongation at break; in addition, the particle size is not suitable for use in MS glue. MS glue will cause poor processing performance; in addition, the surface treatment agent selected in the manufacture is not suitable for MS glue, which makes the compatibility between calcium carbonate and MS glue poor

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 for MS glue
  • Preparation method of nano calcium carbonate for MS glue
  • Preparation method of nano calcium carbonate for MS glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of nano calcium carbonate for MS glue, including the following processes:

[0039] Step 1. Digest the quicklime with the activity of 360ml and water according to the mass ratio of 1:6, and then carry out the digestion reaction. After the reaction is completed, it is sieved twice through a 200-mesh and 320-mesh vibrating screen. The two-stage suspension separator is connected in series to remove impurities to obtain calcium hydroxide refined slurry. The temperature of the digested water is 55°C. Using this highly active lime and a reasonable ratio of gray-water reaction, and adopting two screening and three-stage suspension separator to remove impurities, it can ensure that the calcium hydroxide required by the core carbonization process is more delicate and uniform, and the product is guaranteed The uniformity of the particles ensures that the product does not return to alkali, and ensures the product's low oil absorption value and low pH value. Amon...

Embodiment 2

[0048] A preparation method of nano calcium carbonate for MS glue includes the following steps:

[0049] Step 1. Digest the quicklime with activity of 380ml and digestion water according to the mass ratio of 1:6, and then carry out the digestion reaction. After the reaction is completed, it is sieved twice through a 200-mesh and 320-mesh vibrating screen, and then used after sieving The three-stage suspension separator is connected in series to remove impurities to obtain calcium hydroxide refined slurry. The temperature of the digested water is 55°C. Using this highly active lime and a reasonable ratio of gray-water reaction, and adopting two screening and three-stage suspension separator to remove impurities, it can ensure that the calcium hydroxide required by the core carbonization process is more delicate and uniform, and the product is guaranteed The uniformity of the particles ensures that the product does not return to alkali, and ensures the product's low oil absorption...

Embodiment 3

[0058] A preparation method of nano calcium carbonate for MS glue includes the following steps:

[0059] Step 1. Digest the quicklime with activity of 400ml and water according to the mass ratio of 1:6, and then carry out the digestion reaction. After the reaction is completed, it is sieved twice through a 200-mesh and 320-mesh vibrating screen. The two-stage suspension separator is connected in series to remove impurities to obtain calcium hydroxide refined slurry. The temperature of the digested water is 55°C. Using this highly active lime and a reasonable ratio of gray-water reaction, and adopting two screening and three-stage suspension separator to remove impurities, it can ensure that the calcium hydroxide required by the core carbonization process is more delicate and uniform, and the product is guaranteed The uniformity of the particles ensures that the product does not return to alkali, and ensures the product's low oil absorption value and low pH value.

[0060] Step tw...

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
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of nano calcium carbonate for MS glue, which comprises the following steps: removing impurities from calcium hydroxide (Ca (OH) 2) slurry obtained after the digestion reaction of quicklime (CaO) and water (H2O), preserving heat and aging, adding a crystal form control agent, performing primary carbonization synthesis reaction with the washed kiln gas containing carbon dioxide (CO2), adding a post-treatment agent, aging for a certain time, performing secondary carbonization synthesis reaction with the washed kiln gas containing carbon dioxide (CO2) to obtain calcium carbonate (CaCO3) cooked slurry, adding a modifier into the cooked slurry, performing filter pressing dehydration, drying, crushing and grading after the reaction is finished to obtain the nano calcium carbonate for MS glue. The nano calcium carbonate crystal prepared by the method is a standard cube, and the crystal is mono-disperse, and the average particle diameter is only 100-150nm, and the specific surface area is 16-18m <2 >/g, and the nano calcium carbonate crystal is used for MS glue, and the thixotropy is good, and the extrusion property is good, and the storage stability is good, and the surface finish after gluing is good, and the tensile strength is high, and the elongation is high and the bonding property is also good. The preparation method of nano calcium carbonate for MS glue has the advantages of simple and feasible process, low cost, low price and better economic benefit.

Description

Technical field [0001] The invention relates to the technical field of preparation of nano calcium carbonate, in particular to a preparation method of nano calcium carbonate for MS glue. Background technique [0002] MS polymer is a cross-linked polymer based on silane-terminated polyether. MS polymer-based products do not contain silicone components and solvents, and do not contain polyurethane groups. Most of the formulations are odorless and environmentally friendly. The inherent elasticity of MS adhesives and sealants can absorb and compensate for dynamic loads, uniformly transfer forces, and prevent materials from overwhelming. Early fatigue, MS-based materials can achieve bonding between multiple substrates. The typical feature is that no surface treatments, such as primers, are required. MS polymers can be cross-linked or cured through continuous exposure to moisture. The moisture mainly comes from the air or the substrate itself. SPUR is the abbreviation for silane-ter...

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): C01F11/18C09C1/02C09C3/08C09J171/00C09J11/04
CPCC01F11/181C01F11/182C01F11/183C01P2004/62C01P2006/12C08K2003/265C08K2201/011C09C1/021C09C3/08C09J11/04C09J171/00C08K3/26
Inventor 杜年军孙勇峰
Owner 卢氏国嵩莱纳米科技有限公司
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