Nano composite material and application thereof in preparation of high-opacity plain decorative base paper

A nano-composite material, chitosan technology, applied in the field of papermaking, can solve the problems of water absorption capacity decline, paper page absorption performance, etc., to achieve the effect of improving smoothness, improving paper opacity, and good concealing performance

Active Publication Date: 2022-01-11
ZHEJIANG GRANDRICH PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improving the opacity of paper by increasing the amount of titanium dioxide added is a common method in the production of decorative base paper, but the presence of a large amount of fillers can have a significant impact on the absorption performance of paper
When the filler content is low, the absorption capacity of the base paper can be improved, but when the filler content is too high, the water absorption capacity will decrease

Method used

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  • Nano composite material and application thereof in preparation of high-opacity plain decorative base paper
  • Nano composite material and application thereof in preparation of high-opacity plain decorative base paper
  • Nano composite material and application thereof in preparation of high-opacity plain decorative base paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of modified chitosan

[0043] Mix 4g chitosan, 35% NaOH and 60g cyclohexanol, stir at 50°C for 4h; slowly add 60% chloroacetyl-L-valine aqueous solution after stirring; Adjust the pH to be neutral; then soak in methanol, wash with absolute ethanol, and dry to obtain the modified chitosan.

Embodiment 2

[0045] Preparation of nanocomposites

[0046] Take chitosan and 1% (v / v) acetic acid solution to prepare a chitosan acetic acid solution with a concentration of 2g / mL, heat to 60°C and stir for 2h; then add 2wt% nano-titanium dioxide and stir for 2h before ultrasonic dispersion 20 minutes is the nano-composite liquid, and the nano-composite liquid is spray-dried into powder under the conditions of the inlet air temperature of 150°C and the outlet air temperature of 60°C to obtain the nano-composite material.

Embodiment 3

[0048] Preparation of nanocomposites

[0049] The difference between this example and Example 2 is that this example uses the modified chitosan prepared in Example 1 to prepare a nanocomposite material.

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Abstract

The invention provides a nano composite material and application thereof in preparation of high-opacity plain decorative base paper, and belongs to the field of papermaking. The preparation method of the nano composite material comprises the following steps of: preparing chitosan/modified chitosan and an acetic acid solution into a chitosan/modified chitosan acetic acid solution, heating and stirring the chitosan/modified chitosan acetic acid solution, adding nano titanium dioxide, and performing stirring; and carrying out ultrasonic dispersion to obtain a nano composite material liquid, and carrying out spray drying on the nano composite material liquid to obtain the nano composite material. Decorative base paper prepared from the nano composite material is high in opaqueness, high in titanium dioxide retention rate and fine and smooth in paper surface.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a nanocomposite material and its application in the preparation of high-opacity plain decorative base paper. Background technique [0002] Decorative base paper is a new type of special paper, which has developed rapidly in recent years due to its wide application. Decorative base paper is a kind of industrial special paper made of high-quality wood pulp and titanium dioxide as the main raw materials through special processing. Now the decorative base paper after impregnation is collectively referred to as impregnated film paper. Decorative products made of wood-based panels impregnated with film paper, with many varieties of designs and colors, beautiful plain surface, heat insulation, flame retardant, easy to clean, no warping, no cracking, etc., and there are many kinds of flowers and patterns. , bright and bright color, outstanding sense of layering, is "substituting paper for pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/00D21H11/12D21H17/24D21H17/67D21H17/68
CPCD21H11/00D21H11/12D21H17/24D21H17/675D21H17/68
Inventor 肖伟郭小锋马龙虎郑宏亮
Owner ZHEJIANG GRANDRICH PAPER
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