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Nano modified paper based on surface modification and preparation method thereof

A nano-modification and surface modification technology, which is applied in pulp beating/refining methods, papermaking, papermaking machines, etc., can solve the problems of weak bond of pulp fibers, agglomeration of nano functional materials, difficulty in exerting effectiveness, etc., and achieve stable properties, The effect of not being easy to reunite and increasing the retention

Inactive Publication Date: 2016-06-22
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of partial agglomeration and uneven distribution of nano-functional materials in modified paper, which are difficult to play a role, and low retention due to weak combination with pulp fibers, and proposes a nano-modified paper based on surface modification and its preparation method

Method used

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  • Nano modified paper based on surface modification and preparation method thereof

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specific Embodiment approach 1

[0027] Specific implementation mode 1: In this implementation mode, the preparation method of nano-modified nonlinear insulating paperboard is implemented according to the following steps:

[0028] 1. Disintegrate the cardboard through the pulper and then send it to the refiner for refining, so that the degree of beating of the pulp reaches 35°SR, and then use the disintegrator to perform disintegration treatment, and finally concentrate the concentration of the primary pulp after the disintegration treatment to 4.5%, to obtain liquid pulp;

[0029] 2. Mix the modifier solvent and the functional group modifier at a mass ratio of 100:10 to obtain a modifier solution.

[0030] 3. Add functional fillers to the modifier solution obtained in step 2 according to the mass ratio of nano-functional materials and surface modifier solution at 100:10, heat in a water bath at 30°C and undergo ultrasonic treatment for 20 minutes to obtain functional group-modified nano-functions material s...

specific Embodiment approach 2

[0035] Specific embodiment two: In this embodiment, the method for preparing nonlinear insulating paperboard based on nano-modification is implemented according to the following steps:

[0036] 1. Disintegrate the cardboard through the pulper and then send it to the refiner for refining, so that the degree of beating of the pulp reaches 35°SR, and then use the deflagging machine to perform decompression treatment, and finally concentrate the concentration of the primary pulp after decompression treatment to 4.5%, to obtain liquid pulp;

[0037] 2. Mix the modifier solvent and the functional group modifier at a mass ratio of 100:7 to obtain a modifier solution.

[0038] 3. Add functional fillers to the modifier solution obtained in step 2 according to the mass ratio of nano functional material and surface modifier solution at 100:7, heat in a water bath at 30°C and undergo ultrasonic treatment for 15 minutes to obtain functional group modified nano-functions material suspension....

specific Embodiment approach 3

[0043] Specific implementation mode three: In this implementation mode, the preparation method of nano-modified nonlinear insulating paperboard is implemented according to the following steps:

[0044] 1. Disintegrate the cardboard through the pulper and then send it to the refiner for refining, so that the degree of beating of the pulp reaches 35°SR, and then use the disintegrator to perform disintegration treatment, and finally concentrate the concentration of the primary pulp after the disintegration treatment to 4.5%, to obtain liquid pulp;

[0045] 2. Mix the modifier solvent and the functional group modifier at a mass ratio of 100:8 to obtain a modifier solution.

[0046] 3. Add functional fillers to the modifier solution obtained in step 2 according to the mass ratio of nano-functional material and surface modifier solution at 100:8, heat in a water bath at 30°C and undergo ultrasonic treatment for 15 minutes to obtain functional group-modified nano-functions material ...

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Abstract

The invention discloses nano modified paper based on surface modification and a preparation method thereof and belongs to the technical field of conductive non-linear insulating paperboards, aiming at solving the problems that nano functional materials in modified paper are partially agglomerated and are not uniformly distributed so that the effect is difficult to exert, and the retention amount is low due to the fact that the nano functional materials are not firmly combined with paper pulp fibers and the like. The product is prepared from liquid-state paper pulp, a modifying agent solvent, a functional group modifying agent and functional fillers. The method comprises the following steps: 1, mixing the modifying agent solvent and the functional group modifying agent; 2, adding the functional fillers; and putting the mixture into a water bath and carrying out ultrasonic treatment; and 3, adding the liquid-state paper pulp; after electrically stirring and uniformly mixing, forming wet paper; and dehydrating in vacuum, hotly pressing, and drying in vacuum to obtain the nano modified paper based on the surface modification. The nano modified paper is applied to insulation in a converter transformer and a wire outlet device. With the adoption of the product disclosed by the invention, an electric field in an oil paper composite insulating structure can be uniformly distributed.

Description

technical field [0001] The invention belongs to the technical field of conductance nonlinear insulating paperboard; in particular, it relates to a surface-modified nano-modified paper (conductance nonlinear insulating paperboard) and a preparation method thereof. Background technique [0002] Fiber paper is a solid insulating material used in electricians. There are plant fiber paper and synthetic fiber paper, which are usually made by impregnating insulating liquid or insulating varnish and glue. Through the adjustment of raw materials and papermaking methods, various insulating papers required in insulation technology can be obtained, such as impregnated paper for the manufacture of laminates, rods and tube insulation for transformers; for the manufacture of gummed paper capacitive bushing cores and general laminated tube winding paper; capacitor paper used in the manufacture of capacitor components; cable paper used in the manufacture of oil-impregnated paper insulated c...

Claims

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Application Information

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IPC IPC(8): D21H17/69D21H27/12D21B1/34D21D1/20D21F1/00D21F1/66D21F3/02D21F5/14
CPCD21H17/69D21B1/345D21D1/20D21F1/00D21F1/66D21F3/02D21F5/14
Inventor 陈庆国刘贺千池明赫王新宇王永红魏新劳
Owner HARBIN UNIV OF SCI & TECH
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