CN110578266B - Special paper with low hygroexpansivity and high recovery and preparation method thereof - Google Patents

Special paper with low hygroexpansivity and high recovery and preparation method thereof Download PDF

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Publication number
CN110578266B
CN110578266B CN201910831458.4A CN201910831458A CN110578266B CN 110578266 B CN110578266 B CN 110578266B CN 201910831458 A CN201910831458 A CN 201910831458A CN 110578266 B CN110578266 B CN 110578266B
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paper
parts
amylose
aminosilane
recovery
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CN201910831458.4A
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CN110578266A (en
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不公告发明人
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ASIA SYMBOL (GUANGDONG) PAPER Co.,Ltd.
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Asia Symbol Guangdong Paper Co ltd
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Priority to CN202010724694.9A priority Critical patent/CN111996840A/en
Priority to CN201910831458.4A priority patent/CN110578266B/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/13—Silicon-containing compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/12—Defoamers

Abstract

The invention relates to paper with excellent dimensional stability and recovery and a preparation method thereof, wherein the paper comprises 60-80 parts of wood pulp fiber, 3-5 parts of mineral filler, 3-5 parts of wetting agent and 2-5 parts of defoaming agent, and is characterized by further comprising 5-10 parts of aminosilane and 5-10 parts of amylose. By adding amino silane and amylose into the paper pulp, certain micro-elasticity can be endowed to the paper in X, Y two directions on the plane of the paper, the micro-elasticity can be converted into local tensile stress, fibers tending to expand and deform are drawn together, the deformation amount of the fibers is reduced, and the wet expansion deformation rate of the paper is improved. When the paper is dried again, the driving force for the expansion deformation is reduced due to the dewatering of the fibers, and the fibers can be continuously drawn together by local tensile stress in the paper and tend to return to the shape of the paper before it is wetted. That is, the micro-elasticity can alleviate the blister and wrinkle shape of the paper sheet due to the expansion deformation, and improve the recovery of the paper sheet.

Description

Special paper with low hygroexpansivity and high recovery and preparation method thereof
Technical Field
The invention relates to special paper with low wet expansion rate and high recovery and a preparation method thereof, belongs to the field of papermaking, and can be applied to wallpaper.
Background
The main component of the paper is cellulose, and the cellulose can swell and deform when meeting water, so that the paper can easily expand and deform when meeting water or in a humid environment. For wallpaper, it is generally not desirable to undergo swelling deformation in water or in a humid environment, i.e. for paper applied to wallpaper it is generally required to have a low coefficient of moisture swelling.
In the prior art, in order to avoid the expansion deformation of paper in a wet environment, a waterproof layer, such as a PVC waterproof layer, is usually disposed on the wallpaper, and the expansion deformation is avoided by a physical isolation manner. However, this method increases the number of redundant steps, and is complicated and costly.
Further, the surface of the paper sheet may be modified to reduce the degree of wet expansion of the surface of the paper sheet, for example, in WO2014/006268, the degree of wet expansion of the paper sheet may be significantly reduced by immersing the paper sheet in a mixture of a sugar alcohol, urea, polyalkylene glycol and/or glycerin.
Although the dimensional stability of the paper is improved, the expansion deformation of the paper usually causes blisters and wrinkles in a local area, and after the paper is dried again and dehydrated, the paper cannot be restored to its original flat shape due to the blisters and wrinkles already caused by the wet expansion deformation, or the deformed shape such as blisters and wrinkles cannot be improved, so that the flatness, appearance, and the like of the surface of the wallpaper are deteriorated. Accordingly, an object of the present invention is to provide a paper having a low wet expansion coefficient and a high recovery property.
Disclosure of Invention
In order to solve the technical problems, the invention provides paper with low wet swelling rate and high recovery, which utilizes the coupling characteristic of an amino silane coupling agent, simultaneously hydrolyzes amino silane to obtain silanol, combines the silanol with hydroxyl on the surface of amylose to dewater, can be jointed with the amylose, bonds amino in the amino silane and cellulose in wood pulp fibers, can improve the cross-linking stability between the cellulose in the paper, and simultaneously can endow the paper with certain micro-elasticity in X, Y two directions on the plane of the paper, the micro-elasticity can effectively relieve the swelling deformation of the paper in water or a humid environment, and can relieve the foaming and wrinkle shapes of the paper caused by swelling deformation after the paper is dried again and dewatered, thereby improving the recovery of the paper.
The paper with good dimensional stability and recovery comprises, by mass, 60-80 parts of wood pulp fibers, 3-5 parts of mineral fillers, 3-5 parts of wetting agents and 2-5 parts of defoaming agents, and is characterized by further comprising 5-10 parts of aminosilane and 5-10 parts of amylose.
Wherein the wood pulp fiber comprises needle pulp and broad leaf pulp, and the mass ratio of the needle pulp to the broad leaf pulp is preferably 40-60: 60-40.
Wherein the aminosilane is selected from one or more of gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltriethoxysilane and N-beta (aminoethyl) -gamma-aminopropylmethyldiethoxysilane. Preferably gamma-aminopropyltrimethoxysilane or gamma-aminopropyltriethoxysilane.
Among them, amylose having a molecular weight of preferably 1 to 2X 105。
A preparation method of paper with good dimensional stability and recovery performance comprises the steps of adding wood pulp fibers, mineral fillers, wetting agents, defoaming agents, aminosilane and amylose into a pulper according to the formula, pulping, papermaking, net surfing, squeezing, drying, press polishing, paper winding, cutting and packaging.
According to the invention, through adding aminosilane and amylose into paper pulp, the self coupling characteristic of the aminosilane is utilized, cellulose and starch high molecular compounds can be coupled together, particularly, silanol is obtained after the aminosilane is hydrolyzed and is combined with hydroxyl on the surface of the amylose to be further dehydrated and can be combined with the amylose, amino in the aminosilane is bonded with cellulose in wood pulp fibers, the cross-linking stability between the cellulose in paper can be improved, and meanwhile, certain micro-elasticity can be given to the paper in X, Y two directions on the plane of the paper. When the paper meets water, the fiber has a tendency of expansion deformation, however, the micro elasticity exists in the paper, in the condition, the micro elasticity can be converted into local tensile stress, the fiber which tends to expansion deformation is drawn together, the deformation amount of the fiber is reduced, and the wet expansion deformation rate of the paper is improved. When the paper is dried again, the driving force for the expansion deformation is reduced due to the dewatering of the fibers, and the fibers can be continuously drawn together by local tensile stress in the paper and tend to return to the shape of the paper before it is wetted. That is, the micro-elasticity can alleviate the blister and wrinkle shape of the paper sheet due to the expansion deformation, and improve the recovery of the paper sheet.
Detailed Description
In order to better demonstrate the technical effects of the present invention, the following detailed description and illustrations are given in conjunction with the preferred embodiments and the corresponding comparative examples.
Example 1
The paper comprises, by mass, wood pulp fibers 60, a mineral filler 3, a wetting agent 3 and a defoaming agent 2, and is characterized by further comprising aminosilane 5 and amylose 5.
The wood pulp fiber comprises needle pulp and broad leaf pulp, and the mass ratio of the needle pulp to the broad leaf pulp is 50: 50.
The aminosilane is gamma-aminopropyltrimethoxysilane.
The preparation method comprises the steps of adding the wood pulp fiber, the mineral filler, the wetting agent, the defoaming agent, the aminosilane and the amylose into a pulper according to the formula, pulping, papermaking, screening, pressing, drying, calendaring, rolling paper, cutting and packaging.
Example 2
The paper comprises wood pulp fiber 70, mineral filler 4, wetting agent 4 and defoaming agent 4 in parts by weight, and is characterized by also comprising aminosilane 8 and amylose 8.
The wood pulp fiber comprises needle pulp and broad leaf pulp, and the mass ratio of the needle pulp to the broad leaf pulp is 40: 60.
The aminosilane is gamma-aminopropyltriethoxysilane.
The preparation method comprises the steps of adding the wood pulp fiber, the mineral filler, the wetting agent, the defoaming agent, the aminosilane and the amylose into a pulper according to the formula, pulping, papermaking, screening, pressing, drying, calendaring, rolling paper, cutting and packaging.
Example 3
The paper comprises, by mass, 80 parts of wood pulp fibers, 5 parts of mineral filler, 5 parts of wetting agent and 5 parts of defoaming agent, and is characterized by also comprising 10 parts of aminosilane and 10 parts of amylose.
The wood pulp fiber comprises needle pulp and broad leaf pulp, and the mass ratio of the needle pulp to the broad leaf pulp is 60: 40.
The aminosilane is N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane.
The preparation method comprises the steps of adding the wood pulp fiber, the mineral filler, the wetting agent, the defoaming agent, the aminosilane and the amylose into a pulper according to the formula, pulping, papermaking, screening, pressing, drying, calendaring, rolling paper, cutting and packaging.
Comparative example 1
The difference compared to example 1 is that no aminosilane and no amylose were added, the rest being the same.
Comparative example 2
The difference compared to example 1 is that no aminosilane is added, the rest being the same.
Comparative example 3
The difference compared to example 1 is that amylose is not added, the rest being the same.
To test the dimensional stability and recovery of the paper produced, the paper produced in examples 1 to 3 and comparative examples 1 to 3 was taken, and 200X 50 long strips of paper were cut at a distance of 50mm from the edge position, immersed in deionized water, after the tape was completely wetted, the long strips were taken out, the length thereof was measured, and then the length thereof was measured after drying, and the surface wrinkles and blisters were observed, with reference to the method used in WO 2014/006268. The wet expansion deformation rate was defined as the percentage of the difference in length between before and after the impregnation, and the recovery rate was defined as the ratio of the length after the re-drying to the original length, and the results are shown in Table 1
Wet expansion deformation rate Recovery rate Wrinkling and blistering after drying
Example 1 0.8% 100.4% No obvious wrinkles and less bubbling in the edge area
Example 2 0.9% 100.5% No obvious wrinkles and less bubbling in the edge area
Example 3 1.0% 100.5% No obvious wrinkles and less bubbling in the edge area
Comparative example 1 2.6% 102.4% More wrinkles, bubbling in the edges and in the central area
Comparative example 2 2.3% 102.1% With a small amount of wrinkles, blistering at the edges and in the central area
Comparative example 3 1.8% 101.6% With a small amount of wrinkles, blistering at the edges and in the central area
As can be seen from the above table, the addition of aminosilane and amylose to the pulp can significantly improve the dimensional stability of the paper, and the recovery rate of the paper is closer to 100%, and the recovery is good.

Claims (2)

1. The preparation method of the paper with good dimensional stability and recovery is characterized in that the formula comprises 60 parts of wood pulp fiber, 3 parts of mineral filler, 3 parts of wetting agent and 2 parts of defoaming agent, and is characterized by also comprising 5 parts of amino silane and 5 parts of amylose; the wood pulp fiber comprises needle pulp and broad leaf pulp, and the mass ratio of the needle pulp to the broad leaf pulp is 50: 50; the aminosilane is gamma-aminopropyltrimethoxysilane; adding wood pulp fiber, mineral filler, wetting agent, defoaming agent, aminosilane and amylose into a pulper according to the formula for pulping, then grinding into thick liquid, and performing papermaking, net surfing, squeezing, drying, press polishing, paper rolling, cutting and packaging; the amino silane is hydrolyzed to obtain silanol, the silanol is combined with hydroxyl on the surface of amylose to be dehydrated and is jointed with the amylose, amino in the amino silane is bonded with cellulose in wood pulp fiber, the cross-linking stability between the cellulose in paper is improved, meanwhile, the paper is endowed with certain micro-elasticity in X, Y two directions on the plane where the paper is located, the micro-elasticity effectively relieves the expansion deformation of the paper in the water or wet environment, meanwhile, after the paper is dried again and dehydrated, the paper is in the shapes of bubbles and folds caused by the expansion deformation, and the restorability of the paper is improved.
2. A paper made by the method of claim 1 having good dimensional stability and recovery.
CN201910831458.4A 2019-09-04 2019-09-04 Special paper with low hygroexpansivity and high recovery and preparation method thereof Active CN110578266B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010724694.9A CN111996840A (en) 2019-09-04 2019-09-04 Special paper with low hygroexpansivity and high recovery and preparation method thereof
CN201910831458.4A CN110578266B (en) 2019-09-04 2019-09-04 Special paper with low hygroexpansivity and high recovery and preparation method thereof

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JPH04149432A (en) * 1990-10-12 1992-05-22 Fuji Photo Film Co Ltd Base for photographic paper
CN103161094A (en) * 2011-12-09 2013-06-19 张庆之 Antistatic synthesis paper
CN103103753A (en) * 2012-12-26 2013-05-15 北京市塑料研究所 Method for surface treatment of fibers or fabric through coupling agent
CN105256655A (en) * 2015-09-11 2016-01-20 姚志宏 Anti-microbial mothproof composite base paper and preparation method therefor
CN105350382A (en) * 2015-11-04 2016-02-24 铜陵三佳变压器有限责任公司 High-mechanical-property insulating paper for transformers
CN105544286B (en) * 2015-12-16 2017-10-03 烟台民士达特种纸业股份有限公司 A kind of preparation method of para-aramid fiber mica paper
CN107278728A (en) * 2017-06-28 2017-10-24 常州明华运输有限公司 A kind of fruit cultivating bag paper and preparation method thereof
CN107604745A (en) * 2017-09-28 2018-01-19 广西华洋矿源材料有限公司 A kind of technique for preparing wallpaper basic unit as filler by the use of modified calcium carbonate
CN109183498A (en) * 2018-08-21 2019-01-11 济宁明升新材料有限公司 A kind of preparation method and application of wallpaper carboxylic styrene butadiene latex
CN109137604A (en) * 2018-09-04 2019-01-04 扬州市祥华新材料科技有限公司 A kind of preparation method of essence coupling paper
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CN110578266A (en) 2019-12-17

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Address after: Shuang Shui Zhen Sha Lu Cun Ruifeng Industrial Park, Xinhui District, Jiangmen City, Guangdong Province, the first 529100

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