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Preparation method of paper with magnetic characteristics

A technology of magnetic properties and paper, applied in the field of paper manufacturing, can solve the problems of low resistance of ferrite material, low whiteness of paper, insufficiency of acid and alkali, etc., and achieve the effect of not easy to demagnetize, easy to operate, and not easy to be imitated.

Inactive Publication Date: 2013-11-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ferrite material has low resistance, is not resistant to acid and alkali, and cannot transmit light, and the whiteness of the prepared paper is relatively low, which has certain limitations in printing and other aspects.

Method used

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  • Preparation method of paper with magnetic characteristics
  • Preparation method of paper with magnetic characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1: Preparation of Inorganic Materials with Magnetic Properties

[0020] 1) At first, according to mass fraction with 32% Tb 4 o 7 , 22% B 2 o 3 , 9% Al 2 o 3 , 25% SiO 2 , 8% P 2 o 5 , 2% BaO, 1% ZnO, and 1% NaCl are weighed and put into an agate mortar and mixed until the uniformity is greater than 98%, forming a batch;

[0021] 2) Next, at 1300°C, add the batch material into a corundum crucible wrapped with aluminum silicate fiber and covered, and melt at a heating rate of 20°C / min from 1300°C to 1460°C to form a glass melt. Insulate at the melting temperature for 3 hours, and stir for 1 minute with a corundum stirring rod every 1 hour during the melting process;

[0022] 3) Then, quickly pour the melted glass melt into distilled water at 20°C for water quenching, then remove the water-quenched sample, put it in an oven at 120°C for 4 hours, and then cool it naturally to room temperature;

[0023] 4) Finally, put the cooled particles into an alumina bal...

Embodiment 2

[0031] Step 1: Preparation of Inorganic Materials with Magnetic Properties

[0032] 1) At first, according to mass fraction with 30% Tb 4 o 7 , 16% B 2 o 3 , 18% Al 2 o 3 , 23% SiO 2 , 6% P 2 o 5 , 3% BaO, 1% ZnO, and 3% NaCl are weighed and put into an agate mortar and mixed until the uniformity is greater than 98%, forming a batch;

[0033] 2) Next, at 1300°C, add the batch material into a corundum crucible wrapped with aluminum silicate fiber and covered, and melt at a heating rate of 20°C / min from 1300°C to 1550°C to form a glass melt. Insulate at the melting temperature for 2 hours, and stir for 1 minute with a corundum stirring rod every 1 hour during the melting process;

[0034] 3) Then, quickly pour the melted glass melt into distilled water at 10°C for water quenching, then remove the water-quenched sample, put it in an oven at 120°C for 6 hours, and then cool it down to room temperature naturally;

[0035] 4) Finally, put the cooled particles into an alumi...

Embodiment 3

[0043] Step 1: Preparation of Inorganic Materials with Magnetic Properties

[0044] 1) At first, according to mass fraction with 30% Tb 4 o 7 , 22% B 2 o 3 , 25% Al 2 o 3 , 15% SiO 2 , 2% P 2 o 5 , 3% BaO, 1% ZnO, and 2% NaCl are weighed and put into an agate mortar and mixed until the uniformity is greater than 98%, forming a batch;

[0045] 2) Next, at 1300°C, add the batch material into a corundum crucible wrapped with aluminum silicate fibers and covered, and melt at a heating rate of 20°C / min from 1300°C to 1500°C to form a glass melt. Insulate at the melting temperature for 4 hours, and use a corundum stirring rod to stir for 1 minute every hour during the melting process;

[0046] 3) Then, quickly pour the melted glass melt into distilled water at 30°C for water quenching, then remove the water-quenched sample, put it in an oven at 120°C for 6 hours, and then cool it naturally to room temperature;

[0047] 4) Finally, put the cooled particles into an alumina b...

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Abstract

The invention provides a preparation method of paper with magnetic characteristics, in particular to the paper with the magnetic characteristics, which is prepared by filling magnetic inorganic materials into the cell cavities of paper pulp fibers. The preparation method comprises the following steps of: firstly, smelting boron oxide, aluminum oxide, silicon oxide rare metal oxide and the like serving as raw materials at a high temperature to prepare magnetic inorganic material grains; and then, by utilizing a papermaking process, filling the magnetic inorganic material grains into cell cavities so as to prepare the paper with the magnetic characteristics. The paper prepared by the invention belongs to a renewable resource and has the magnetic characteristics including magnetic responding, magnetic recording and the like, so that the paper can be applied to special paper products needing special identification, such as invoice paper, packaging paper and handwriting paper. In the paper preparation process, special equipment is not needed, the operation is simple and the industrial production is easy to realize; and the magnetism is permanent so that the paper is not easy to degauss and cannot be counterfeited easily.

Description

technical field [0001] The invention relates to a method for manufacturing paper, in particular to a method for preparing paper with magnetic properties. Background technique [0002] With the development of science and technology, various counterfeit and counterfeit products emerge in an endless stream. Special paper products such as bills, product packaging, calligraphy and painting can bring huge profits to counterfeiters, so they do not hesitate to use various cutting-edge new technologies (such as computer graphics processing software, color printing, high-precision scanning, digital printing, etc.) to imitate, Make original anti-counterfeiting be easy to lose its peculiar concealment. Therefore, it is urgent to develop and research various new special and efficient anti-counterfeiting technologies. CN1609919 discloses a kind of anti-counterfeit film inner label sticker and its preparation method and application, comprising a label paper layer (2) printed with an anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H17/63
Inventor 李志健高档妮郭宏伟莫祖学刘盼李鹏闫松明
Owner SHAANXI UNIV OF SCI & TECH
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