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A kind of preparation method of the modified silicon dioxide filler that is used for ink-absorbing layer coating of photographic paper

A silica and nano-silica technology, applied in the field of printing paper manufacturing, can solve the problems affecting the uniformity of ink dispersion and absorption stability, easy aggregation, uneven dispersion, etc., to enhance the adsorption and fixation effect and improve the surface characteristics , Improve the effect of ink absorption

Active Publication Date: 2020-05-15
安徽文峰新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, the quality of color inkjet printing paper (such as color brilliance, clarity, saturation, detail level and color reproduction, etc.) is mainly determined by the performance of the ink-absorbing coating, and the ink-absorbing coating The paint is formed after coating and curing, and the important factor affecting the quality of the ink-absorbing layer paint is the absorbing filler in the paint. At present, nano-alumina and nano-silica are used as absorbing fillers, but most of the existing nano-fillers are easy to aggregate, Problems such as uneven dispersion affect ink dispersion uniformity and absorption stability, and most of the existing research on nano-fillers is to improve its ink absorption, while ink absorption and gloss performance are in the traditional sense. It is a trade-off relationship, and it is rare to see a method that can effectively enhance the above-mentioned comprehensive qualities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of the modified silicon dioxide filler that is used for ink-absorbing layer coating of photographic paper, comprises the steps:

[0024] (1) Preparation of nano-silica dispersion:

[0025] First, weigh the nano-silica and absolute ethanol according to the weight ratio of 1:15 for later use, then slowly add the nano-silica to the absolute ethanol, stir continuously when adding, and disperse with ultrasonic waves after completion. After 25min, get the nano silicon dioxide dispersion liquid for subsequent use;

[0026] (2) Modification treatment:

[0027] a. Put the nano-silicon dioxide dispersion obtained in step (1) into a magnetic stirrer, add modification solution A to the nano-silicon dispersion while magnetically stirring, and stir for 35 minutes for later use; the modified The components in the liquid A and their corresponding parts by weight are: 8 parts of polydimethylsiloxane, 2 parts of calcium chloride, 1 part of zinc chloride, 6 ...

Embodiment 2

[0038] A kind of preparation method of the modified silicon dioxide filler that is used for ink-absorbing layer coating of photographic paper, comprises the steps:

[0039] (1) Preparation of nano-silica dispersion:

[0040] First, weigh the nano-silica and absolute ethanol according to the weight ratio of 1:18 for later use, then slowly add the nano-silica to the absolute ethanol, stir continuously when adding, and disperse with ultrasonic waves after completion. After 27min, get the nano-silica dispersion liquid for subsequent use;

[0041] (2) Modification treatment:

[0042] a. Put the nano-silica dispersion liquid obtained in step (1) into a magnetic stirrer, add the modified liquid A to the nano-silica dispersion liquid while magnetically stirring, and stir for 38 minutes for later use; the modified The ingredients and their corresponding parts by weight in the liquid A are: 10 parts of polydimethylsiloxane, 3 parts of calcium chloride, 2 parts of zinc chloride, 8 part...

Embodiment 3

[0053] A kind of preparation method of the modified silicon dioxide filler that is used for ink-absorbing layer coating of photographic paper, comprises the steps:

[0054] (1) Preparation of nano-silica dispersion:

[0055] First, weigh the nano-silica and absolute ethanol according to the weight ratio of 1:20 for later use, then slowly add the nano-silica to the absolute ethanol, stir continuously when adding, and disperse with ultrasonic waves after completion. After 30min, get the nano silicon dioxide dispersion liquid for subsequent use;

[0056] (2) Modification treatment:

[0057] a. Put the nano-silica dispersion liquid obtained in step (1) into a magnetic stirrer, add the modified liquid A to the nano-silica dispersion liquid while magnetically stirring, and stir for 40 minutes for later use; the modified The components and their corresponding parts by weight in the liquid A are: 11 parts of polydimethylsiloxane, 4 parts of calcium chloride, 3 parts of zinc chloride...

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PUM

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Abstract

The invention discloses a preparation method of a modified silica filler for an ink absorbing layer coating of a photographic paper. The preparation method comprises (1) preparing a nano-silica dispersion solution, (2) modifying the dispersion solution and (3) preparing a finished product. The nano-silica filler is modified through a special method so that the surface characteristics are improved,the filling effect is improved, adsorption and fixing effects on the ink adsorption layer coating and the photographic paper surface are effectively enhanced, a base coating is avoided, the whole inkadsorption and gloss of the coating are improved and a good use value is obtained.

Description

technical field [0001] The invention belongs to the technical field of printing paper manufacturing, and in particular relates to a preparation method of a modified silicon dioxide filler used for ink-absorbing layer coatings of photographic paper. Background technique [0002] Inkjet printing has the advantages of easy colorization and digital control, and is favored by users who pursue personal colors. With the increase in the number of domestic inkjet printers, the demand for high-quality coated inkjet printing paper has increased. Now the color inkjet printing paper on the market in our country is mostly imported from abroad, and the existing domestic production and theoretical research are relatively poor. Inkjet printing requires a recording material coated with an ink-receiving layer (that is, an ink-absorbing layer) to exhibit good pattern resolution and color reproduction. As we all know, the quality of color inkjet printing paper (such as color vividness, clarity,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/30C09C3/06C09C3/08C09C3/10C09C3/12B41M5/50
CPCB41M5/50C01P2006/60C09C1/309C09C3/006C09C3/06C09C3/08C09C3/10C09C3/12
Inventor 桑幸运
Owner 安徽文峰新材料科技股份有限公司
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