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Preparation method and application of nanometer pigment microcapsule

A nano-pigment and microcapsule technology, applied in the field of pigments, can solve the problems affecting the storage stability and application performance of the ink.

Inactive Publication Date: 2013-01-02
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although there are many reports about pigment microcapsules at present, they mainly use microcapsule technology to improve the surface hydrophilicity of pigment particles, and there are still some deficiencies in the control of dispersion stability, which directly affects the storage stability of the prepared ink. and application performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 2 g of copper phthalocyanine pigment (C.I. Pigment Blue 15), 200 g of zirconium beads (3 mm in diameter) and 60 mL of sodium 11-dodecenoate solution (dispersant I) with a molar concentration of 0.25 mol / L into a 200 mL ball mill In the tank, use a QM-SB planetary ball mill to mill at a speed of 500r / min for 6 h; then, add 0.25 Add 0.4 g of O-20 (dispersant II) to mL and Pingping, and then ball mill at room temperature for 1 h at a speed of 500 r / min to separate the zirconium beads and obtain a pre-dispersion of copper phthalocyanine pigment.

[0019] Take 25 mL of the ball-milled copper phthalocyanine pigment pre-dispersion, add 0.03 g of initiator azobisisobutyronitrile, fill with nitrogen gas to remove oxygen in the system, and react at 50 °C water bath temperature for 3 h under mechanical stirring at 700 r / min , to prepare copper phthalocyanine pigment microcapsules. The average particle size is 65nm, and the zeta potential is -69.24 mV.

Embodiment 2

[0021] Add 2 g of copper phthalocyanine pigment (C.I. Pigment Blue 15), 200 g of zirconium beads (3 mm in diameter) and 50 mL of potassium oleate solution (dispersant I) with a molar concentration of 0.2 mol / L into a 200 mL agate ball mill jar, Use a QM-SB planetary ball mill to mill at room temperature for 5 hours at a speed of 500r / min; then, add 0.3 mL of methyl methacrylate and 0.5 g of O-20 (dispersant II) to the ball mill jar, and then / min speed of ball milling at room temperature for 2 h to separate zirconium beads and obtain a pre-dispersion of copper phthalocyanine pigment.

[0022] Take 25 mL of the ball-milled copper phthalocyanine pigment predispersion, add 0.04 g of initiator azobisisobutyronitrile, fill with nitrogen to remove oxygen in the system, and react in a water bath at 50 °C for 4 h under the condition of mechanical stirring at 1000 r / min. That is, copper phthalocyanine pigment microcapsules are obtained. The average particle size is 60 nm, and the zeta...

Embodiment 3

[0024]Add 1.5 g of permanent yellow HR pigment (C.I. Pigment Yellow 83), 200 g of zirconium beads (3 mm in diameter) and 60 mL of potassium 9-decenoate solution with a molar concentration of 0.2 mol / L into a 200 mL agate ball mill jar, Use a QM-SB planetary ball mill to mill at room temperature for 4.5 h at a speed of 500 r / min; then, add a mixed liquid of methyl methacrylate and 2-hydroxypropyl methacrylate with a volume ratio of 7:3 into the ball mill tank 0.3 mL and 0.3 g of Tween T-40 (dispersant II), and then ball milled at room temperature for 1.5 h at a speed of 500 r / min to separate the zirconium beads and obtain a pre-dispersion of permanent yellow HR pigment.

[0025] Take 25 mL of permanent yellow HR pigment pre-dispersion after ball milling, add 0.04 g of initiator azobisisobutyronitrile, fill with nitrogen gas to remove oxygen in the system, stir mechanically at 800r / min, and react at 50°C water bath temperature for 4 h, The permanent yellow HR pigment microcapsul...

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Abstract

The invention discloses a preparation method and an application of a nanometer pigment microcapsule. The preparation method comprises the following steps: preparing pigment pre-dispersion liquid, that is, mixing copper phthalocyanine pigment with a dispersant I, adding zirconium beads into the mixed solution, performing ball milling dispersion, adding a microcapsule wall material monomer and a dispersant II into the dispersion liquid, continuing ball milling dispersion for 1-2 hours, and separating the zirconium beads to obtain the pigment pre-dispersion liquid; adding an initiator into the pigment pre-dispersion liquid, performing an in-situ polymerization reaction to obtain the nanometer pigment microcapsule stably dispersed in an aqueous solution. The nanometer pigment microcapsule is applicable to ink-jet ink for printers and aqueous pigment ink for ball pens. The preparation method of the invention is relatively simple; the prepared nanometer pigment microcapsule not only improves pigment surface characteristics, but also has certain electronegativity, which provides good dispersion stability and excellent comprehensive application performance for the prepared aqueous ink.

Description

technical field [0001] The invention relates to a preparation method and application of nano pigment microcapsules, belonging to the technical field of pigments. Background technique [0002] Personal computers and digital cameras are developing rapidly, which greatly promotes the development of digital image processing technology. Among them, inkjet printing technology has been widely used in families, personal studios, and even all walks of life due to the advantages of inkjet printers such as low price, low noise during operation, and excellent full-color printing quality. [0003] Inkjet printing technology refers to a non-contact technology that sprays droplets of ink on a carrier to form an image. Inkjet ink is the key to inkjet printing technology and the main consumables of inkjet printers. At present, the inkjet inks on the market are mainly water-based dye inks, which have the advantages of bright colors, saturation, good color reproduction, environmental friendl...

Claims

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Application Information

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IPC IPC(8): B01J13/14C09D11/10C09D11/18C09D11/17C09D11/322
Inventor 周雪琴刘东志李巍赵娟娟
Owner TIANJIN UNIV
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