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Preparation method for sustained-release type volatile rust preventive paper

A gas-phase anti-rust paper and a gas-phase anti-rust agent technology, which are applied in the preparation field of slow-release gas-phase anti-rust paper, can solve the problems such as the limitation of gas-phase anti-rust agents, and can increase the anti-rust time, improve the heat resistance and the specific surface area. high effect

Inactive Publication Date: 2014-08-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The release of the gas-phase antirust agent in this patent can only be achieved under specific environmental conditions, and the amount of the gas-phase antirust agent is limited by the cavity volume of halloysite nanotubes

Method used

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  • Preparation method for sustained-release type volatile rust preventive paper
  • Preparation method for sustained-release type volatile rust preventive paper
  • Preparation method for sustained-release type volatile rust preventive paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Place 1000g of 10% ethanol aqueous solution in a suction filter flask, add 35g of benzotriazole, stir to completely dissolve the benzotriazole, 120g of halloysite nanotubes (after burning at 400°C for 2 hours) ), stirring to make the halloysite nanotubes fully contact with the solution. Connect the vacuum pump with the suction filter bottle, vacuum for a certain period of time (such as 10min), keep the sealed system for 20min, release the vacuum, repeat the above operation 4 times, and centrifuge to obtain surface adsorption and the cavity is loaded with vapor phase rust inhibitor (benzene And triazole) halloysite nanotubes.

[0031] Prepare 4mg / ml polyacrylamine hydrochloride and polystyrene sodium sulfonate separately for use. 100g of halloysite nanotubes separated by centrifugation were dispersed in 1000ml of polyacrylamine hydrochloride under stirring, and the solid and liquid were separated by centrifugation after 15 minutes; the same amount of sodium polystyrene sul...

Embodiment 2

[0035] Place 1000g of 10% ethanol aqueous solution in a suction filter flask, add 35g of benzotriazole, stir to completely dissolve the benzotriazole, 120g of halloysite nanotubes (after burning at 400°C for 2 hours) ), stirring to make the halloysite nanotubes fully contact with the solution. Connect the vacuum pump with the suction filter bottle, vacuum for a certain period of time (such as 10min), keep the sealed system for 20min, release the vacuum, repeat the above operation 4 times, and centrifuge to obtain surface adsorption and the cavity is loaded with vapor phase rust inhibitor (benzene And triazole) halloysite nanotubes.

[0036] Prepare 4mg / ml polyacrylamine hydrochloride and polystyrene sodium sulfonate separately for use. 100g of halloysite nanotubes separated by centrifugation were dispersed in 1000ml of polyacrylamine hydrochloride under stirring, and the solid and liquid were separated by centrifugation after 15 minutes; the same amount of sodium polystyrene sul...

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Abstract

The invention relates to a preparation method for sustained-release type volatile rust preventive paper. According to the invention, a halloysite nanotube of a hollow structure is used as a carrier, a volatile antirust agent is adhered on the surface of the carrier and loaded in the cavity of the carrier in virtue of strong adsorption ability of surfaces of the particles of the halloysite nanotube and the cavity structure, and a polyelectrolyte is used for coating, thereby obtaining a halloysite nanotube-volatile antirust agent compound; the halloysite nanotube-volatile antirust agent compound is compounded with a polymer emulsion, modified starch and the like, an obtained compound coats the surface of paper, and drying and press polish are carried out so as to obtain the volatile rust preventive paper with a sustained-release function. Since the volatile antirust agent is adhered on the surface of the halloysite nanotube and loaded in the cavity of the halloysite nanotube and coated by the polyelectrolyte, the release of the volatile antirust agent is controlled, so antirust time of the rust preventive paper is greatly increased; heat capacity of the volatile antirust agent is improved, so loss of the volatile antirust agent during preparation of the rust preventive paper is greatly reduced.

Description

Technical field [0001] The invention relates to a preparation method of anti-rust paper, in particular to a preparation method of slow-release gas phase anti-rust paper. Background technique [0002] Metal materials occupy a very important position in modern industry and agriculture. However, metal parts often undergo surface corrosion and oxidation during storage and circulation. The loss caused by metal corrosion is a worldwide problem. As far as our country is concerned, due to the relatively low level of anti-corrosion technology in our country, or some advanced anti-corrosion methods have not been effectively used, metal corrosion has brought serious economic losses. [0003] As an inner packaging material, VCI paper is widely used in the rust protection of metals and their products. For VCI paper, the effective release of rust inhibitor is the key to its function. Therefore, preventing the loss of the anti-rust agent during the preparation and use of the anti-rust paper can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/18D21H21/38D21H19/14
Inventor 张宏伟张伟超
Owner SOUTH CHINA UNIV OF TECH
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