Photocatalytic fresh-keeping coating and super-fresh paper coated with same

A photocatalysis and coating technology, applied in paper coatings, polyether coatings, antifouling/underwater coatings, etc., can solve the problem of no preservation function, and achieve the effect of solving the decline of catalytic effect, prolonging the preservation period and avoiding agglomeration

Active Publication Date: 2021-03-16
鲸果科技(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fruit and vegetable packaging paper is usually simple wax paper, which does not have the function of freshness preservation, and needs to be solved urgently

Method used

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  • Photocatalytic fresh-keeping coating and super-fresh paper coated with same
  • Photocatalytic fresh-keeping coating and super-fresh paper coated with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 0.02 parts by weight of photocatalytic nano-titanium dioxide particles with a coating layer on the surface, 0.002 parts of slow-release ethylene inhibitors, 0.002 parts of binders and 0.02 parts of soluble polymers, stir and mix, and mix A photocatalytic fresh-keeping coating is prepared. Then the photocatalyzed fresh-keeping paint is sprayed on at least one surface of the paper body layer.

[0028] Wherein, the coating layer is silicon dioxide. Preparation method: first mix 100 parts by weight of nano-titanium dioxide and 300 parts of water, and then fully stir for 10 minutes, then add 1 part of long-chain alkyl surfactant and mix, emulsify for 30 minutes under stirring, then add ethyl silicate, fully Stir for 2 hours, and finally calcinate the mixed solution at 500° C. for 2 hours to obtain nanometer titanium dioxide particles coated with silicon dioxide.

[0029] The slow-release ethylene inhibitor is a microcapsule ethylene inhibitor. The preparation method...

Embodiment 2

[0036] 5 parts by weight of photocatalytic nano-titanium dioxide particles with a coating layer on the surface, 0.1 part of slow-release ethylene inhibitor, 5 parts of binder and 0.05 part of soluble polymer were weighed.

[0037] The cladding layer is montmorillonite. Preparation method: First, add 0.8ml of titanium tetrachloride to 40ml of hydrochloric acid solution with a concentration of 1mol / L and stir for 40min to obtain a light yellow transparent acidic sol of titanium dioxide, then add 1% sodium base to 25ml of acidic sol of titanium dioxide Montmorillonite solution (1g of montmorillonite was added to 50mL of deionized water and 50mL of absolute ethanol mixture and stirred for 10min) and stirred at 60°C for 4h, then centrifugally filtered, fully washed with deionized water for 3 times until no Cl - (using 1% AgNO, solution detection), and then roasting at 500° C. for 2 h to obtain nanometer titanium dioxide particles coated with montmorillonite.

[0038] Others are t...

Embodiment 3

[0040] 9.5 parts by weight of photocatalytic nano-titanium dioxide particles with a coating layer on the surface, 0.18 parts of slow-release ethylene inhibitor, 9.5 parts of binder and 0.09 parts of soluble polymer were weighed.

[0041] Others are the same as embodiment one.

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PUM

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Abstract

The invention discloses a photocatalytic fresh-keeping coating and super-fresh paper coated with the same, and the photocatalytic fresh-keeping coating comprises the following components in parts by weight: 0.01-10 parts of photocatalytic nano titanium dioxide particles with coating layers on the surfaces, 0.001-0.2 part of a slow-release ethylene inhibitor and 0.001-10 parts of a binder, whereinthe coating layer is hydroxyapatite, montmorillonite or silicon dioxide, the slow-release ethylene inhibitor is a microcapsule ethylene inhibitor, and the binder is one or a combination of more of acrylic resin, polyurethane resin and organic silicon resin. The super-fresh paper comprises a paper body layer, a photocatalytic functional layer loaded with photocatalytic particles and an ethylene inhibitor is arranged on the surface of at least one side of the paper body layer, so that packaged fruits and vegetables can be well preserved in the transportation process.

Description

【Technical field】 [0001] The invention relates to the technical field of freshness preservation, in particular to the technical field of photocatalytic ultra-fresh paper. 【Background technique】 [0002] With the improvement of people's living standards, people's requirements for the appearance of fruits also increase thereupon. Fruits, such as apples, pears and oranges, often need to be wrapped in wrapping paper, then covered with foam nets and packed in boxes when they are transported. Existing fruit and vegetable wrapping papers are usually simple waxy papers, which do not have the function of keeping fresh and need to be solved urgently. 【Content of invention】 [0003] The purpose of the present invention is to solve the problems in the prior art, and propose a photocatalytic fresh-keeping coating and super fresh-keeping paper coated with the fresh-keeping coating, which can have a good fresh-keeping effect on the packaged fruits and vegetables during transportation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/04C09D183/04C09D171/02C09D129/04C09D7/62C09D7/40C09D5/14D21H19/40D21H19/38D21H19/58D21H19/60D21H19/62B65D65/42
CPCC09D133/04C09D175/04C09D183/04C09D171/02C09D129/04C09D7/62C09D7/40C09D5/14D21H19/40D21H19/58D21H19/62D21H19/60D21H19/385B65D65/42C08K2201/011C08K2003/2241C08L75/04C08L83/04C08L71/02C08L29/04C08K9/10C08K3/22C08L33/04
Inventor 王晟丁文鹏甘振顺
Owner 鲸果科技(杭州)有限公司
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