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Preparation method of nano calcium carbonate for single-component ms glue

A nano-calcium carbonate, single-component technology, applied in the direction of calcium carbonate/strontium/barium, adhesives, non-polymer adhesive additives, etc., can solve the problems of incompatibility between moisture and whiteness, high reinforcement and dispersibility, and oil absorption The amount can not be taken into account, etc., to achieve the effect of small oil absorption, large amount of filling, and easy dispersion

Active Publication Date: 2020-01-03
SHANXI XINTAI HENGXIN NANO MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to market research, due to the limitation of production technology, the existing nano-calcium carbonate has the problems that moisture and whiteness cannot be balanced, high reinforcement and dispersibility, and oil absorption cannot be balanced.

Method used

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  • Preparation method of nano calcium carbonate for single-component ms glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of nanometer calcium carbonate for one-component MS glue includes the following steps:

[0022] 1) Take CaO whose activity is 420ml of HCl consumption, remove impurities and digest at high temperature to obtain Ca(OH) with a concentration of 15% and an activity of 30s 2 Suspension, stand aging, separate and remove impurities, and finally obtain 3% Ca(OH) 2 Seminal plasma suspension;

[0023] 2) Pump Ca(OH) into the supergravity reactor 2 The seminal plasma suspension is cooled to 5°C in circulation, and then CO is introduced 2 Kiln gas with a content of 80%, react for 5 minutes, and add crystal-type isolating agent when the conductivity drops sharply for the first time;

[0024] 3) Continue to pump Ca(OH) into the supergravity reactor 2 For seminal slurry, the pumping volume is twice that of the first pumping volume, and the temperature is circulated to 15℃ and CO is introduced 2 Kiln gas with a content of 30%, react for 30 minutes, stop the reaction when t...

Embodiment 2

[0029] A preparation method of nanometer calcium carbonate for one-component MS glue includes the following steps:

[0030] 1) Take CaO whose activity is 410ml of HCl consumption, remove impurities and digest at high temperature to obtain Ca(OH) with a concentration of 10% and an activity of 40s 2 Suspension, stand aging, separate and remove impurities, and finally get Ca(OH) with a concentration of 5% 2 Seminal plasma suspension;

[0031] 2) Pump Ca(OH) into the supergravity reactor 2 The seminal plasma suspension is cooled to 10°C in circulation, and then CO is introduced 2 Kiln gas with a content of 70%, react for 10 minutes, and add crystal-type isolating agent when the conductivity drops sharply for the first time;

[0032] 3) Continue to pump Ca(OH) into the supergravity reactor 2 For seminal slurry, the pumping volume is 4 times that of the first pumping volume, and the temperature is reduced to 17°C in circulation, and CO is introduced 2 Kiln gas with a content of 40%, react f...

Embodiment 3

[0037] A preparation method of nanometer calcium carbonate for one-component MS glue includes the following steps:

[0038] 1) Take the CaO whose activity is 400ml HCl consumption, remove impurities and digest at high temperature to obtain Ca(OH) with a concentration of 20% and an activity of 50s 2 Suspension, stand aging, separate and remove impurities, and finally obtain Ca(OH) with a concentration of 8% 2 Seminal plasma suspension;

[0039] 2) Pump Ca(OH) into the supergravity reactor 2 The seminal plasma suspension is cooled to 15°C cyclically, and then CO is introduced 2 The kiln gas with a content of 60%, react for 7 minutes, and add the crystalline isolating agent when the conductivity drops significantly for the first time;

[0040] 3) Continue to pump Ca(OH) into the supergravity reactor 2 Seminal slurry suspension, the pumping volume is 5 times the first pumping volume, and the temperature is cooled to 25°C in circulation, and CO is introduced 2 Kiln gas with a content of 38...

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Abstract

The invention relates to a preparation method of nano calcium carbonate for single-component MS (modified silicone) glue and solves the problem that nano calcium carbonate applied to single-componentMS glue cannot balance moisture, oil suction, whiteness, dispersity, reinforcement and the like. High-activity limestone is combined with the advantages of a high gravity reactor, fast and low reactions are combined, and regular cubic nano calcium carbonate is prepared which is coated with a composite modifier; traditional thermal drying and vacuum low-temperature drying are combined so that properties of the nano calcium carbonate are more satisfactory to the requirement on the application of single-component MS glue. The nano calcium carbonate for single-component MS glue has low moisture content, small particle size, large BET (Brunauer, Emmett and Teller) surface area, high whiteness, low oil absorption and good dispersion convenience, has high filling quantity, high reinforcement, good storage stability and high whiteness for MS glue, and is suitable for mass use in indoor decoration.

Description

Technical field [0001] The invention relates to the technical field of nano calcium carbonate, in particular to a preparation method of nano calcium carbonate for single-component MS glue. Background technique [0002] Polyether MS glue is a silicone modified polyether glue. Its technology was first developed in Japan and developed rapidly. Due to the special structure of silicone modified polyether sealant, it combines the advantages of silicone rubber and polyurethane rubber, showing excellent weather resistance, durability, high resistance to deformation and displacement, good adhesion, coating, The advantages of environmental friendliness, low contamination, low viscosity and excellent workability have attracted more and more attention from the domestic construction industry, and in industrial fields such as automobile manufacturing, rail transit, container manufacturing, equipment manufacturing, electrical and electronic fields, etc. It is getting more and more popularized ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/04C09J171/00C01F11/18
CPCC01F11/18C08K2003/265C08K2201/011C09J11/04C09J171/00C08K9/10C08K3/26
Inventor 吕国章杨芮平李娟娟
Owner SHANXI XINTAI HENGXIN NANO MATERIALS TECH CO LTD
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