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Method for coating paper substrate with silicon dioxide directly

A technology of silica and coated paper, which is applied in the direction of coated paper base paper, etc., can solve the problems of limiting the characteristics of silica gel particles and the scarcity of silica content, etc., and achieve uniform paper surface properties, easy operation, and easy access to raw materials Effect

Inactive Publication Date: 2015-12-30
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nevertheless, we recently found that the content of silica on the surface of SG81 paper substrate is very rare (Anal.Chem.2012,84,931-938.), and its main component is still ribbon-shaped cellulose, which limits the silica particles to a certain extent. characteristics

Method used

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  • Method for coating paper substrate with silicon dioxide directly
  • Method for coating paper substrate with silicon dioxide directly
  • Method for coating paper substrate with silicon dioxide directly

Examples

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Embodiment 1

[0029] The present embodiment is that the silica-coated paper matrix is ​​prepared by the suction filtration coating method, comprising the following steps:

[0030]Referring to Figure 1, at room temperature, add 0.15g of soluble starch and 100mL of deionized water into a 250mL beaker, and stir it evenly with a glass rod; then place it in a heating mantle for heat treatment, and continue stirring during the heating process to The starch is fully dissolved; after the starch is completely dissolved, take the beaker out of the heating device and cool it to room temperature, add 0.6g of silicon dioxide (purity: 99.99%) with a particle size of about 1.0 μm and stir evenly, then put it into a ultrasonic emulsification device Ultrasonic treatment was carried out for 15min in the medium to prepare the coating solution as shown in Figure 1(A); then the above solution was added to the device as shown in Figure 1(B) containing blank filter paper for suction filtration coating, and the sol...

Embodiment 2

[0034] The present embodiment is that the silica-coated paper matrix is ​​prepared by the suction filtration coating method, comprising the following steps:

[0035] At room temperature, add 0.10g of soluble starch and 100mL of deionized water into a 250mL beaker, and use the same steps as in Example 1 for the rest. After heating, dissolving, and cooling, add 0.6g of carbon dioxide with a particle size of about 1.0μm. Silica, after suction filtration, washing, drying, pressing and other steps can prepare the silica coated paper substrate.

Embodiment 3

[0037] The present embodiment is that the silica-coated paper matrix is ​​prepared by the suction filtration coating method, comprising the following steps:

[0038] At room temperature, in a 250mL beaker, add 0.15g of soluble starch and 100mL of deionized water, and use the same steps as in Example 1 for the rest. After heating, dissolving, and cooling, add 0.4g of carbon dioxide with a particle size of about 1.0μm. Silica, after suction filtration, washing, drying, pressing and other steps can prepare the silica coated paper substrate.

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Abstract

The invention relates to a method for coating a paper substrate with silicon dioxide directly. Under normal temperature and pressure, a binding agent containing starch is completely dissolved in deionized water, and silicon dioxide is added to prepare a solution with uniformly dispersed coating materials; the surface of the paper substrate is uniformly coated with the solution with uniformly dispersed coating materials with a suction filtration coating method, and the surface of the paper substrate is uniformly coated with one layer of silicon dioxide particles under the bonding action of the binding agent of the starch and the like and the suction filtration action of a suction filtration pump; according to the method, the surface of the paper substrate can also be uniformly coated with other oxide particles, carbon nanotubes, polymer materials, metal powder and the like; the method has the advantages that the operation is simple and convenient, raw materials are easy to obtain, the equipment is simple, the prepared paper surface properties are uniform, mass production is easy, the preparation process is green and environment-friendly and the like.

Description

technical field [0001] The invention relates to the technical field of silicon dioxide coating, in particular to a method for directly coating paper substrates with silicon dioxide, in particular to a method of using commercial silicon dioxide as a raw material, through suction and filtration under vacuum filtration conditions. Adhesive action of binder Direct method for the preparation of silica-coated paper substrates. technical background [0002] Due to its unique mechanical strength, small particle size, high specific surface area, adjustable pore size and a large number of surface modification studies, silica has been widely used as a chromatographic stationary phase material for the separation and analysis of various compounds ( K.K. Unger, in Journal of Chromatography Library, Elsevier, 1979, vol. 16, pp. 1-336). In the early research, in order to combine the characteristics of silica gel with the flexible, good wettability, cheap and easy-to-carry paper substrate, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/54D21H19/40D21H19/72
Inventor 张智平郑亚君王倩张小玲
Owner XI'AN PETROLEUM UNIVERSITY
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