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Preparation method of nano calcium carbonate for single-component MS (modified silicone) 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 high reinforcement and dispersibility, oil absorption, moisture and whiteness Inability to take into account issues such as low oil absorption, large filling amount, and small particle size

Active Publication Date: 2018-12-25
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 (modified silicone) glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method for single-component MS glue with nano-calcium carbonate, comprising the steps:

[0022] 1) Take CaO with an activity of 420ml HCl consumption, digest it at high temperature to remove impurities, and obtain Ca(OH) with a concentration of 15% and an activity of 30s 2 Suspension, standing and aging, separating and removing impurities, and finally obtaining Ca(OH) with a concentration of 3% 2 seminal plasma suspension;

[0023] 2) Pump Ca(OH) into the hypergravity reactor 2 The seminal plasma suspension was cooled to 5°C by circulation, and then CO 2 Kiln gas with a content of 80%, react for 5 minutes, and add a crystal form release agent when the electrical conductivity drops sharply for the first time;

[0024] 3) Continue to pump Ca(OH) into the hypergravity reactor 2 For the seminal plasma suspension, the pumping volume is twice that of the first pumping volume, the temperature is cooled to 15°C by circulation, and CO 2 Kiln gas with a content...

Embodiment 2

[0029] A preparation method for single-component MS glue with nano-calcium carbonate, comprising the steps:

[0030] 1) Take CaO with an activity of 410ml HCl consumption, digest it at high temperature to remove impurities, and obtain Ca(OH) with a concentration of 10% and an activity of 40s 2 Suspension, standing and aging, separating and removing impurities, and finally obtaining Ca(OH) with a concentration of 5% 2 seminal plasma suspension;

[0031] 2) Pump Ca(OH) into the hypergravity reactor 2 The seminal plasma suspension was cooled to 10°C by circulation, and then CO 2 Kiln gas with a content of 70%, react for 10 minutes, and add a crystal form release agent when the electrical conductivity drops sharply for the first time;

[0032] 3) Continue to pump Ca(OH) into the hypergravity reactor 2 For the seminal plasma suspension, the pumping volume is 4 times of the first pumping volume, the temperature is cooled to 17°C by circulation, and CO 2 Kiln gas with a content ...

Embodiment 3

[0037] A preparation method for single-component MS glue with nano-calcium carbonate, comprising the steps:

[0038] 1) Take CaO with an activity of 400ml HCl consumption, digest it at high temperature to remove impurities, and obtain Ca(OH) with a concentration of 20% and an activity of 50s 2 Suspension, left to age, separated to remove impurities, and finally obtained Ca(OH) with a concentration of 8% 2 seminal plasma suspension;

[0039] 2) Pump Ca(OH) into the hypergravity reactor 2 The seminal plasma suspension was cooled to 15°C by circulation, and then CO 2 Kiln gas with a content of 60%, react for 7 minutes, and add a crystal form release agent when the electrical conductivity drops sharply for the first time;

[0040] 3) Continue to pump Ca(OH) into the hypergravity reactor 2 For the seminal plasma suspension, the pumping volume is 5 times that of the first pumping volume, the temperature is lowered to 25°C by circulation, and CO 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 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 glue and polyurethane glue, showing excellent weather resistance, durability, high resistance to deformation and displacement, good adhesion, paintability, The advantages of environmental friendliness, low pollution, 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 popularizati...

Claims

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Application Information

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Patent Type & Authority Applications(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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