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A kind of special paper with stable size and good restorability and preparation method thereof

By adding aminosilane and sugar alcohols to wallpaper pulp, the cross-linking stability and microelasticity of cellulose are improved, which solves the problem of wallpaper swelling and deformation in humid environments and significantly improves the dimensional stability and recovery of paper.

Active Publication Date: 2020-12-11
ANHUI SENCAI TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the dimensional stability of the paper has been improved, the expansion and deformation of the paper usually produces blisters and wrinkles in local areas. When the paper is dried again and dehydrated, the paper still maintains the shape of the bubbles and wrinkles caused by the expansion deformation. , cannot be restored to the original flat shape, or deformed shapes such as blisters and wrinkles cannot be improved, making the flatness and aesthetics of the wallpaper surface worse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The paper includes wood pulp fiber 60, mineral filler 3, wetting agent 3 and defoamer 2 in parts by mass, and is characterized in that it also includes aminosilane 5 and sugar alcohol 5.

[0016] The general formula of sugar alcohol is HOCH 2 [CH(OH)] 3 CH 2 Oh

[0017] Wood pulp fibers include coniferous pulp and hardwood pulp, and the mass ratio of coniferous pulp to hardwood pulp is 50:50.

[0018] The aminosilane is γ-aminopropyltrimethoxysilane.

[0019] The preparation method is as follows: take wood pulp fiber, mineral filler, wetting agent, defoamer, aminosilane, and sugar alcohol according to the above formula and add them to a pulper for pulping, and then refine the pulp. After papermaking, surfing, pressing, drying, Calendering, rolling, cutting and packaging are all you need.

Embodiment 2

[0021] The paper includes wood pulp fiber 70, mineral filler 4, wetting agent 4 and defoamer 4 in parts by mass, and is characterized in that it also includes aminosilane 8 and sugar alcohol 8.

[0022] The general formula of sugar alcohol is HOCH 2 [CH(OH)] 4 CH 2 Oh

[0023] Wood pulp fibers include coniferous pulp and hardwood pulp, and the mass ratio of coniferous pulp to hardwood pulp is 40:60.

[0024] The aminosilane is γ-aminopropyltriethoxysilane.

[0025] The preparation method is as follows: take wood pulp fiber, mineral filler, wetting agent, defoamer, aminosilane, and sugar alcohol according to the above formula and add them to a pulper for pulping, and then refine the pulp. After papermaking, surfing, pressing, drying, Calendering, rolling, cutting and packaging are all you need.

Embodiment 3

[0027] The paper includes wood pulp fiber 80, mineral filler 5, wetting agent 5 and defoamer 5 in parts by mass, and is characterized in that it also includes aminosilane 10 and sugar alcohol 10.

[0028] The general formula of sugar alcohol is HOCH 2 [CH(OH)] 5 CH 2 Oh

[0029] Wood pulp fibers include coniferous pulp and hardwood pulp, and the mass ratio of coniferous pulp to hardwood pulp is 60:40.

[0030] The aminosilane is N-β(aminoethyl)-γ-aminopropyltrimethoxysilane.

[0031] The preparation method is as follows: take wood pulp fiber, mineral filler, wetting agent, defoamer, aminosilane, and sugar alcohol according to the above formula and add them to a pulper for pulping, and then refine the pulp. After papermaking, surfing, pressing, drying, Calendering, rolling, cutting and packaging are all you need.

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Abstract

The invention relates to special paper with a stable size and excellent recovery and a preparation method of the special paper. The paper comprises 60-80 parts of wood pulp fiber, 3-5 parts of mineralfiller, 3-5 parts of a wetting agent and 2-5 parts of a defoaming agent. The paper is characterized by further comprising 5-10 parts of amino silane and 5-10 parts of polyol. Due to addition of the amino silane and the polyol in paper pulp, the paper has certain micro elasticity in two directions of X and Y on the plane of the paper, expansion deformation of the paper in case of water or in a damp environment can be effectively alleviated by the micro elasticity, meanwhile, bubbles and wrinkle shapes caused by expansion deformation of the paper which is dried and dehydrated for a second timecan be also alleviated, and the recovery of the paper can be improved.

Description

technical field [0001] The invention relates to special paper with stable size and excellent restorability and a preparation method thereof, which belongs to the field of papermaking and can be applied to wallpaper. Background technique [0002] Ordinary paper will swell and deform when it encounters water due to the swelling of cellulose, and it will also swell and deform due to the gradual absorption of water by cellulose in a humid environment. For paper applied to wallpaper, it is usually required to have good dimensional stability, even if it encounters water or humid air, it will not cause too much expansion and deformation. [0003] The method usually adopted in the prior art is to set a waterproof layer on the wallpaper, such as a PVC waterproof layer, to isolate the paper from contact with water or humid air. This method will increase redundant processes, which is complicated and cumbersome, and the cost is high. [0004] In the prior art, surface modification is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/13D21H17/06D21H27/20D21F11/00D21H21/12D21H21/14
CPCD21B1/345D21D1/20D21F11/00D21H17/06D21H17/13D21H21/12D21H21/14D21H27/20
Inventor 不公告发明人
Owner ANHUI SENCAI TECH DEV CO LTD