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Special coating liquid for stone paper coating and preparation method thereof

A technology of coating liquid and stone paper, applied in the direction of coating, etc., can solve the problems of poor adhesion, inorganic powder is easy to be pulled off by the coating, etc., to achieve enhanced adhesion stability, broaden applications, and solidify cross-linked bonding force-enhancing effect

Active Publication Date: 2015-05-06
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the stone paper coating is not firmly attached and the inorganic powder in the stone paper is easily pulled off by the coating during printing, the present invention proposes a special coating liquid for stone paper coating, which contains organic silicon Modified mineral fiber has a certain wettability to stone paper. By coating, the fibers in the coating liquid are soaked into the inorganic powder inserted into the surface layer of stone paper to enhance the adhesion, which solves the problem of inorganic powder in stone paper during printing. The problem that the powder is easily pulled off by the coating enhances the high-speed printing suitability of the stone paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Add 50 parts by weight of water, 20 parts by weight of ethanol, 1 part by weight of casein, and 0.5 parts by weight of dispersant polyacrylate into the emulsification disperser, start the emulsification disperser, and introduce 20 parts by weight at 800rpm Part of flaky calcium carbonate, emulsified and dispersed for 20min to obtain a dispersion;

[0042] 2) Send 60 parts by weight of silicon-acrylic emulsion, 15 parts by weight of silicone-modified fine calcium silicate fibers and the dispersion obtained in step 1) to a grinder, and grind for 15 minutes at a speed of 1000 rpm to obtain a slurry ;

[0043] 3) Transfer the slurry obtained in step 2) to an emulsifying disperser, add 0.2 parts by weight of a crosslinking agent composed of triethylenetetramine, hexamethylenediamine, and diethylenetriamine at a mass ratio of 3:2:1, and Under the condition of 800rpm rotating speed, introduce 1 weight part of whitening agent, disperse for 3 minutes and filter through 80-10...

Embodiment 2

[0046] 1) Add 80 parts by weight of water, 15 parts by weight of ethanol, 2 parts by weight of casein, and 1 part by weight of dispersant polyethylene glycol acrylate block into the emulsification disperser, start the emulsification disperser, at 1000rpm Import 30 parts by weight of flaky calcium carbonate under the rotating speed condition, and emulsify and disperse for 20-30min to obtain a dispersion;

[0047] 2) Send 60 parts by weight of silicon-acrylic emulsion, 20 parts by weight of organosilicon-modified fine calcium sulfate whisker fibers and the dispersion obtained in step 1) to a grinder, and grind for 15 minutes at a speed of 1500 rpm to obtain a slurry material;

[0048] 3) Transfer the slurry obtained in step 2) to an emulsifying disperser, add 0.3 parts by weight of a crosslinking agent composed of triethylenetetramine, hexamethylenediamine, and diethylenetriamine in a mass ratio of 3:2:1, and Under the condition of 900rpm rotating speed, introduce 1 part by wei...

Embodiment 3

[0052] 1) Add 90 parts by weight of water, 20 parts by weight of ethanol, 3 parts by weight of casein, and 1 part by weight of dispersant polyacrylate into the emulsification disperser, start the emulsification disperser, and introduce 20 parts by weight at 1000rpm Part of flaky calcium carbonate, emulsified and dispersed for 25min to obtain a dispersion;

[0053] 2) Send 60 parts by weight of silicon-acrylic emulsion, 20 parts by weight of organosilicon-modified fine calcium carbonate whisker fibers and the dispersion obtained in step 1) to a grinder, and grind for 15 minutes at a speed of 2000 rpm to obtain a slurry material;

[0054] 3) Transfer the slurry obtained in step 2) to an emulsifying disperser, add 0.5 parts by weight of a crosslinking agent composed of triethylenetetramine, hexamethylenediamine, and diethylenetriamine in a mass ratio of 3:2:1, and Introduce 1.5 parts by weight of whitening agent at 800rpm, disperse for 5 minutes and filter through 80-100 mesh sc...

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Abstract

The invention discloses a special coating liquid for stone paper coating and a preparation method thereof. The special coating liquid for stone paper coating is characterized by comprising the following components in parts by weight: 50-60 parts of silicone acrylic emulsion, 20-30 parts of lamellate calcium carbonate, 15-20 parts of organic silicon modified minute mineral fibers, 1-3 parts of casein, 1-1.5 parts of brightener, 0.5-1 part of disperser, 0.2-0.5 part of cross-linking agent, 50-80 parts of water and 10-20 parts of ethanol. The special coating liquid for stone paper coating of the invention is characterized by containing organic silicon modified mineral fibers which have certain wettability to stone papers. Fibers in the coating liquid can penetrate into inorganic powder in the stone paper surface by coating, so as to enhance adhesive force to solve the problem of pulling off inorganic powders in the stone paper by coating during a printing process to enhance applicability of stone paper in high-speed printing.

Description

technical field [0001] The invention relates to the field of paper coating, in particular to a special coating solution for stone paper coating and a preparation method thereof. Background technique [0002] With the rise of low-carbon economy around the world, the paper industry has been seeking new breakthroughs in paper technology in recent years. On the basis of synthetic paper, stone paper with inorganic powder as the main raw material has been gradually formed through technical improvement. Stone paper solves the problems of high energy consumption and high pollution of traditional plant fiber papermaking, and also solves the defect of high cost of synthetic paper mainly composed of plastic resin. At present, stone paper has been widely used in the packaging field, and plays a huge role in promoting the development of low-carbon economy. [0003] In order to expand the printing adaptability of stone paper in the packaging field and eliminate the limitations in print...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D7/12
CPCC08K2003/2241C09D133/04C08L2205/03C09D7/61C09D7/62C09D7/70C08L89/005C08L33/04C08K13/06C08K9/10C08K7/10C08K7/00C08K2003/265C08K3/34C08K2003/3018C08K2003/3045C08K5/17
Inventor 陈庆曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD
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