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Boehmite nanocrystalline for high-gloss photo paper and preparation method and application of boehmite nanocrystalline

A boehmite and nanocrystalline technology, applied in the field of high-gloss inkjet printing photo paper materials, can solve the problems of insufficient density and color saturation, affecting the promotion of inkjet printing, difficult to control uniformity, etc., and achieve excellent ink-fixing performance. , The effect of close combination and good dispersion

Active Publication Date: 2016-04-20
洛阳三睿宝纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that domestic manufacturers are unable to produce. Internationally, there are only about five world-class papermaking groups with this level. This has resulted in high prices and seriously affected the promotion of inkjet printing.
The problems that are difficult to manufacture are: First, the paper base, called RC or PE coated photographic base paper, currently relies on imports
Second, the formulation of the coating is currently only in the hands of a few large manufacturers
There are also many manufacturers in China who are trying, but the performance is too poor, and the response is that the density and color saturation are insufficient.
Third, the coating level and uniformity are difficult to grasp

Method used

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  • Boehmite nanocrystalline for high-gloss photo paper and preparation method and application of boehmite nanocrystalline
  • Boehmite nanocrystalline for high-gloss photo paper and preparation method and application of boehmite nanocrystalline
  • Boehmite nanocrystalline for high-gloss photo paper and preparation method and application of boehmite nanocrystalline

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A method for preparing boehmite nanocrystals for high-gloss photographic paper, measuring AlCl 3 ·6H 2 O solution (concentration: 2.5mol / L) 80mL, add NaOH solution (concentration: 2.5mol / L) 240mL under stirring, the molar ratio of aluminum salt solution and alkali solution reaction is: Al 3+ / OH – =1 / 3; and adjust the pH to 7, add 1g of sodium dodecylsulfonate, and stir evenly, then transfer to the autoclave, control the temperature between 120±5oC, react for 2h, and obtain the solid phase product as Nanocrystalline boehmite: The boehmite nanocrystalline solid-liquid system is suction filtered and rinsed, and the filtrate is rinsed 1~3 times, and dried at 80~120°C, and the core-shell structure is obtained after grinding Boehmite nanocrystals, the product can also be used without drying.

[0025] Specific transmission electron microscope photos and XRD see figure 1 and figure 2 . The size of boehmite nanocrystals is about 10nm, and the specific surface area is 260...

Embodiment 2

[0028] A preparation method for boehmite nanocrystals used in high-gloss photographic paper, measuring Al(NO 3 ) 3 9H 2 O solution (concentration is 0.5mol / L) 100mL, add NaOH solution (concentration is 1mol / L) 150mL under stirring, the molar ratio of aluminum salt solution and alkali solution reaction is: Al 3+ / OH – =1 / 3; adjust the pH to 10, add 0.5g of sodium dodecylsulfonate, stir evenly, transfer to a high-pressure reactor, control the temperature between 110±5oC, and react for 10h to obtain a solid-phase product which is the nucleus Shell-structured boehmite nanocrystals.

[0029] An application of boehmite nanocrystals for high-gloss photographic paper, the boehmite nanocrystals prepared above are added to 10 times the weight of deionized water and stirred evenly, and then add polyethylene that accounts for 2% of the weight of deionized water Alcohol solution and stir well to prepare component A; mix crosslinking agent and cationic color fixing agent according to th...

Embodiment 3

[0031] A preparation method for boehmite nanocrystals used in high-gloss photographic paper, measuring Al 2 (SO 4 ) 3 18H 2 O solution (concentration is 1mol / L) 80mL, add KOH solution (concentration is 2mol / L) 250mL under stirring, the molar ratio of aluminum salt solution and alkali solution reaction is Al 3+ / OH – =3 / 10; adjust the pH to 14, add 0.8g of sodium lauryl sulfate, stir evenly, transfer to the autoclave, control the temperature between 130±5oC, react for 8h, and obtain the solid phase product which is the shell structure Atmite nanocrystals.

[0032] An application of boehmite nanocrystals for high-gloss photographic paper. The boehmite nanocrystals prepared above are added to 5 times the weight of deionized water and stirred evenly, and then add polyethylene that accounts for 2% of the weight of deionized water. Alcohol solution and stir well to prepare component A; mix crosslinking agent and cationic color fixing agent according to the weight ratio of 1:1 t...

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Abstract

The invention discloses boehmite nanocrystalline for high-gloss photo paper and a preparation method and application of the boehmite nanocrystalline. The application comprises the steps that the boehmite nanocrystalline is added into deionized water of which the weight is 5-10 times of that of the boehmite nanocrystalline to be stirred evenly, then a polyvinyl alcohol solution accounting for 2% of the weight of the deionized water is added and stirred evenly, and a component A is prepared; a cross-linking agent and a cationic color fixing agent are mixed according to the weight ratio of 1:1, and a component B is prepared; the component A and the component B are mixed according to the weight ratio of 2:1 and stirred to be uniform, standing is performed for defoaming, the mixture is coated on a microporous type paper base, and then drying is performed. The boehmite nanocrystalline is of a core-shell structure, boehmite with the grain diameter of 10-40 nm serves as a core, an anionic surfactant serves as a shell, the mass ratio of the anionic surfactant to the boehmite nanocrystalline is (0.5-20):100, the anionic type is easily converted into the cationic type under the action of the color fixing agent, ink adsorption is convenient, and the size is small.

Description

technical field [0001] The invention relates to the technical field of high-gloss inkjet printing photo paper materials, in particular to a boehmite nanocrystal for high-gloss photo paper, a preparation method and application thereof. Background technique [0002] At present, there are mainly three types of inkjet printing photo paper on the market: (1), cast-coated. The image quality of this type of photo paper is poor, because its optical density and gloss are relatively low, and its paper base absorbs ink directly, so the photo paper will appear some degree of wrinkling after printing, but due to its The printing quality is basically acceptable, and the production cost is low, so its market demand is the largest, and it can be used as a substitute for low-end products. [0003] (2), expansion category. The weight range of expansion and microporous photo paper is generally in the range of 260-300g / m 2 , these two types of photo paper can avoid the above-mentioned wrinkl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/12D21H25/06
CPCD21H19/12
Inventor 许荣辉李洛利肖民乐
Owner 洛阳三睿宝纳米科技有限公司