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Preparation method of special nano calcium carbonate for ink

A nano calcium carbonate, ink technology, applied in calcium carbonate/strontium/barium, ink, nanotechnology for materials and surface science, etc., can solve the problems of wide particle size, easy agglomeration and precipitation, low oil absorption value, etc. To achieve the effect of good storage stability, stable ink system and good compatibility

Inactive Publication Date: 2021-02-23
江西华明纳米碳酸钙有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is still a certain gap in the performance of domestic ink nano-calcium carbonate and Baiyanhua O and other foreign nano-calcium carbonate products, mainly in the wide particle size, low oil absorption value, good dispersion in benzene solvents, but in A large amount of oil-soluble inks with alcohols, esters, and ketones as solvents have unsatisfactory dispersion and are prone to agglomeration and precipitation, which affects the storage stability of ink products and affects the printing quality of inks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The preparation process of ink-specific nano-calcium carbonate is as follows:

[0011] The refined Ca(OH) 2 The slurry was aged for 30 hours, and the slag was removed by vibrating screen and hydrocyclone at 6 stages. After adjusting the mass concentration to 12% and the temperature to 24°C, add Ca(OH) 2 1.0% of the mass of the crystal form control agent, stir and mix evenly, and then introduce CO with a volume concentration of 30% 2 The gas is bubbled and carbonized until the pH of the slurry is 6.5, and the carbonization end point is obtained to obtain cooked pulp with a mass concentration of 12%. After removing the slag from the cooked pulp, the temperature is raised while stirring, and Ca(OH) is added after the temperature reaches 85°C. 2 7% modifier by mass, adjust the pH value to 7, stir and modify for 90 minutes; the obtained modified nano-calcium carbonate suspension is dehydrated by pressure filtration, dried and depolymerized to obtain nano-calcium carbonate f...

Embodiment 2

[0014] The preparation process of special nano-calcium carbonate for ink is as follows:

[0015] The refined Ca(OH) 2 The slurry was aged for 24 hours, and the slag was removed through vibrating screens and hydrocyclones at 6 stages. After adjusting the mass concentration to 15% and the temperature to 25°C, add Ca(OH) 2 1.0% of the mass of the crystal form control agent, stir and mix evenly, and then introduce CO with a volume concentration of 30% 2 The gas is bubbled and carbonized until the pH of the slurry is 7, and the carbonization end point is obtained to obtain a cooked pulp with a mass concentration of 15%. After removing the slag from the cooked pulp, the temperature is raised while stirring, and Ca(OH) is added after the temperature reaches 85°C. 2 6% modifier by mass, adjust the pH value to 7, stir and modify for 90 minutes; the obtained modified nano-calcium carbonate suspension is dehydrated by pressure filtration, dried and depolymerized to obtain nano-active ca...

Embodiment 3

[0018] Calculated in parts by mass, 60 parts of polyester acrylate (M-8060), 12 parts of epoxy acrylate, 5 parts of alkyl acrylate phosphate (CD9050), 4 parts of LG acrylic monomer, photoinitiator (Omnirad 819 ) 10 parts, and disperse evenly at high speed for 1 hour; then add (Example 1) 10 parts of nano-calcium carbonate and 25 parts of black organic pigment respectively at a speed of 250 r / min; Then it was ground by a three-roll machine for 6 hours to obtain a UV-curable offset printing ink. The water-based ink exhibits good adhesion and viscosity on paper, firm printing, strong adaptability, high gloss, and no fading.

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Abstract

According to a preparation method of aspecialnano calcium carbonate for printing ink, through control of a carbonization process, a mixture of sodium tripolyphosphate, sodium dimer acid, zinc sulfateand cane sugar is adopted as a crystal form control agent, a mixture of sodium stearate, rosin-based mono-quaternary ammonium salt and polyacrylamide is adopted as a modifier, and the nano calcium carbonate with the particle size of 40-50 nm and the activation degree of 99% or above is developed. The mass ratio of the modifier sodium stearate to the rosin-based mono-quaternary ammonium salt to thepolyacrylamide is 1: 0.5: 0.2; and the mass ratio of the crystal form control agent sodium tripolyphosphate to the sodium dimer acid to the zinc sulfate to the cane sugar is 1: 2: 1: 1 in sequence. The nano activated calcium carbonate is used as filler to be applied to ink production, has good compatibility with high polymer materials and base materials in ink, is free of agglomeration,and good in dispersity, and the ink system is stable in ink system, shows good storage stability, fluidity, transparency and printing adaptability, and is high in glossiness.

Description

[0001] Field [0002] The invention relates to a method for preparing nano-calcium carbonate specially used for ink, and specifically belongs to the technical field of preparing nano-calcium carbonate. Background technique [0003] The average particle size of nano-calcium carbonate is between 20 and 100 nm, and it is widely used as a filler for printing inks. The purpose is to reduce costs and adjust the fluidity and color density of inks. As a filler for ink, it is required to have transparency. After filling, it cannot conflict with the color of the ink product, and the higher the gloss, the better, but the oil absorption value and fluidity must be within a certain range. During the production of ink Easy to disperse, good compatibility with resins and base materials, nano-calcium carbonate is divided into transparent calcium and translucent calcium, the particle size of transparent calcium is 30-40 nm, Baiyanhua O of Japan Shiraishi Company has excellent transparency and h...

Claims

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Application Information

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IPC IPC(8): C01F11/18C09D11/03B82Y30/00
CPCC01F11/182C01F11/183C09D11/03B82Y30/00
Inventor 赵小英敖志良廖劲松
Owner 江西华明纳米碳酸钙有限公司
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