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Aqueous nano-paste and preparation method thereof

A nano-color paste, water-based technology, applied in the nano field, can solve the problems of few product varieties and unsatisfactory effects, and achieve the effect of narrow distribution, small particle size and good stability

Inactive Publication Date: 2013-07-10
任天斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China is also actively researching and developing such dispersants, and has developed some varieties of polymer dispersants, which are mainly used in non-aqueous systems; research on polymer dispersants that can be used in water-based systems is in progress, and there are very few product varieties, and The effect is not ideal

Method used

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  • Aqueous nano-paste and preparation method thereof
  • Aqueous nano-paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 8% by weight of dispersant and 0.02% of defoamer, dissolve in deionized water, then add 40% by weight of Pigment Yellow P.Y.150, and disperse in a high-speed disperser for 50 minutes to thoroughly disperse each component Evenly, finally pass through a 200-mesh sieve to filter out the large particles to obtain a premix; the premix is ​​fed into a low-speed stirring container through an infusion pump, and the solution enters the modified horizontal sand mill for circular grinding. , grind for 6 hours, collect the grinding liquid after filtration, and encapsulate the water-based nano-color paste product. The fineness of the pigment particles in the color paste was measured by a laser particle size analyzer to reach 103 nanometers, and centrifuged at 3000 rpm for 30 minutes without sedimentation. After standing at room temperature for 6 months, the average particle size still reached 108 nm.

Embodiment 2

[0019] Take 5% of dispersant and 0.01% of defoamer by weight, dissolve in deionized water, then add 35% by weight of Pigment Red P.R.122, and disperse in a high-speed disperser for 55 minutes to thoroughly disperse each component Evenly, finally pass through a 200-mesh sieve to filter out the large particles to obtain a premix; the premix is ​​fed into a low-speed stirring container through an infusion pump, and the solution enters the modified horizontal sand mill for circular grinding. , grind for 7 hours, collect the grinding liquid after filtration, and encapsulate the water-based nano-color paste product. The fineness of the pigment particles in the color paste was measured by a laser particle sizer to reach 98 nanometers. Centrifuge at 3000 rpm for 30 minutes without sedimentation. After standing at room temperature for 6 months, the average particle size still reached 102 nm.

Embodiment 3

[0021] Take 10% by weight of dispersant and 0.04% of defoamer, dissolve in deionized water, then add 50% by weight of Pigment Yellow P.Y.74, and disperse in a high-speed disperser for 30 minutes to thoroughly disperse each component Evenly, finally pass through a 200-mesh sieve to filter out the large particles to obtain a premix; the premix is ​​fed into a low-speed stirring container through an infusion pump, and the solution enters the modified horizontal sand mill for circular grinding. , grind for 7.5 hours, collect the grinding liquid after filtration, and encapsulate the water-based nano-color paste product. The fineness of the pigment particles in the color paste was measured by a laser particle sizer to reach 110 nanometers. Centrifugation at 3000 rpm for 30 minutes showed no sedimentation. After standing at room temperature for 6 months, the average particle size still reached 115 nm.

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Abstract

The invention belongs to the nano-technological field, and concretely relates to an aqueous nano-paste and a preparation method thereof. The paste is composed of nanoscale pigment particles, water, a specially prepared dispersant and an assistant, and the pigment particles can be ground to below 100nm through the improvement of a grinding device and can stably stay in an aqueous system for a long term under the dispersion action of the high-molecular dispersant having a specially-prepared star-shaped structure. The aqueous nano-paste prepared in the invention has the advantages of small granularity, narrow distribution, good stability, environmental protection and safety, can be used for preparing high-order coatings, inkjet printer ink, ink and pigment photoresists for digital inkjet printing devices, and the like, and has a broad application prospect.

Description

technical field [0001] The invention belongs to the field of nanotechnology, and in particular relates to an aqueous nano-color paste and a preparation method thereof. Background technique [0002] Inkjet printing technology is a non-contact printing technology. The pattern is formed by mixing tiny ink droplets of different colors directly on the surface of the material. Therefore, the formation, shape and size of ink droplets have a very important influence on the quality of inkjet printing patterns. At present, the droplet ejection volume of commercial print heads has been as small as 1 to 1.5×10 -12 liters, which puts forward higher requirements for the research and development and production of digital inkjet inks. Ordinary indoor ink-dye-based ink (Dye-based Ink) is fully soluble at the molecular level. The ink is a complete composite solution, which is difficult to block the ink head; it is easy to absorb the material after printing, and the color is bright; but it i...

Claims

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Application Information

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IPC IPC(8): C09D17/00C09D11/02D06P1/44D06P1/613D06P5/30G03F7/004C09D11/326
Inventor 任天斌
Owner 任天斌