A raw rice paper and a method for preparing the same

Abstract

The application provides raw Xuan paper and a preparation method thereof. The raw Xuan paper is prepared by using broussonetia papyrifera pulp and reed canary grass pulp as main materials, and adding a small amount of artemisia argyi pulp, a small amount of aerogel silicon dioxide and actinidia kiwi juice, and further spraying a cationic quaternary ammonium cellulose material on the surface of the paper. The raw Xuan paper prepared by the application has excellent insect resistance and bacterial corrosion resistance, and good oxidation resistance, so that the paper can be stored for a long time and is not easy to discolor. Meanwhile, the paper has small deformation and good shape stability after being soaked in water, and is not easy to stretch and deform. The raw Xuan paper prepared by the application can be used for calligraphy, painting, stele rubbing and mounting, and meets the requirements of good ink wetting performance, uniform ink diffusion, clear ink color gradation and clear level, good toughness, folding resistance and tensile resistance, and the like. Moreover, the preparation method is simple, the conditions are mild, the raw materials are abundant and easy to obtain, and the application is more conducive to industrialized production and popularization and application.

Description

Technical Field

[0001] This invention belongs to the field of raw Xuan paper technology, and relates to a raw Xuan paper and its preparation method. Background Technology

[0002] As the living standards and cultural literacy of the Chinese people improve, people's pursuit of artistic taste is also getting higher and higher. More and more people are investing in traditional arts such as calligraphy, painting, rubbing, and mounting. As the carrier of these artworks, Xuan paper is receiving more and more attention from users. Good Xuan paper requires good ink absorption, good toughness, good dimensional stability, good resistance to insects and bacteria, and good preservation properties, requiring it to be resistant to discoloration and to be preserved for a long time.

[0003] However, at present, the raw materials for high-end Xuan paper in China are limited, the process is complex, and the preservation performance still needs to be improved.

[0004] Therefore, finding a simpler preparation process that enriches the raw materials for high-grade Xuan paper products and has good preservation properties is of great practical significance for promoting industry development, improving people's living standards, and enhancing corporate profitability. It is also one of the focuses of attention for many front-line researchers in the industry. Summary of the Invention

[0005] This invention provides a raw Xuan paper and its preparation method. The raw Xuan paper provided by this invention is soft in texture, has good folding resistance, good water absorption, clear ink diffusion layers, and good transition between light and dark shades. At the same time, the paper has good insect resistance, antibacterial properties, and antioxidant properties, and can be preserved for a long time. Moreover, the preparation method is simple, the conditions are mild, and the raw materials are abundant and readily available, which is more conducive to industrial-scale production and widespread application.

[0006] This invention provides a raw Xuan paper, the raw materials of which include mixed pulp, kiwi vine juice and aerogel silica;

[0007] The mixed slurry, by mass parts, includes

[0008] Paper mulberry bark pulp, 40-60 parts by weight;

[0009] 35-50 parts by weight of dragon's beard grass pulp;

[0010] Artemisia annua bark pulp 3-5 parts by weight;

[0011] The amount of kiwi vine juice added is 1-2 kg / t of the oven-dried pulp of the mixed pulp;

[0012] The amount of aerogel silica added is 0.01 to 5 kg / t of the oven-dry slurry.

[0013] Preferably, the mass concentration of the paper mulberry bark pulp is 0.4-1.0%;

[0014] The mass concentration of the *Dracaena sanderiana* pulp is 0.4–1.0%.

[0015] The mass concentration of the Artemisia annua bark pulp is 0.4%–1.0%.

[0016] Preferably, the raw material further includes cationic quaternary ammonium cellulose;

[0017] The amount of cationic quaternary ammonium cellulose added is 0.1-0.3 kg / t of oven-dry paper.

[0018] This invention provides a method for preparing raw Xuan paper as described in any of the above technical solutions, comprising the following steps:

[0019] 1) After mixing and preparing the pulp from paper mulberry bark, grass stalk pulp, and artemisia bark, a mixed pulp is obtained;

[0020] 2) After mixing the mixed pulp, kiwi vine juice and aerogel silica obtained in the above steps again, the paper is scooped out and then dried to obtain raw Xuan paper.

[0021] Preferably, the method for preparing the paper mulberry bark pulp includes the following steps:

[0022] The paper mulberry is steamed with water, the bark is peeled off and placed outdoors, then soaked in lime, the pH value is adjusted and it is fumigated, and then it is processed to obtain paper mulberry bark pulp.

[0023] Preferably, the outdoor placement time is 3 to 6 months;

[0024] The lime soaking time is 4 days;

[0025] The pH value is adjusted to 10-11;

[0026] The fumigation time is 72 hours.

[0027] Preferably, the method for preparing the artemisia bark pulp includes the following steps:

[0028] Artemisia annua stalks are steamed with water, peeled, and placed outdoors. They are then soaked in lime, the pH value is adjusted, and they are fumigated. After being processed, Artemisia annua peel slurry is obtained.

[0029] Preferably, the outdoor placement time is 3 to 6 months;

[0030] The lime soaking time is 4 days;

[0031] The pH value is adjusted to 10-11;

[0032] The fumigation time is 72 hours.

[0033] Preferably, the method for preparing the dragon's beard grass pulp includes the following steps:

[0034] After soaking the dragon's beard grass in clean water, it is placed outdoors, then soaked in lime, the pH value is adjusted and it is fumigated. After being processed, it yields artemisia bark pulp.

[0035] The soaking time in clean water is 25 to 35 days;

[0036] The outdoor placement period is 3 to 6 months;

[0037] The lime soaking time is 4 days;

[0038] The pH value is adjusted to 10-11;

[0039] The fumigation time is 72 hours.

[0040] Preferably, the pulp concentration is controlled to be 0.4% to 0.5% during the paper-making process;

[0041] After paper retrieval, the process further includes a step of spraying cationic quaternary ammonium cellulose onto the surface of the undried paper.

[0042] This invention provides a raw Xuan paper, the raw materials of which include mixed pulp, kiwi vine juice, and aerogel silica. The mixed pulp, by weight, comprises: 40-60 parts by weight of mulberry bark pulp; 35-50 parts by weight of *Euphorbia tirucalli* pulp; and 3-5 parts by weight of *Artemisia annua* bark pulp. The amount of kiwi vine juice added is 1-2 kg / t of the oven-dried mixed pulp; and the amount of aerogel silica added is 0.01-5 kg / t of the oven-dried mixed pulp. Compared with the prior art, this invention specifically designs a raw Xuan paper with a specific formula and composition, using mulberry bark pulp and *Euphorbia tirucalli* pulp as the main materials, supplemented with a small amount of *Artemisia annua* bark pulp for papermaking. A small amount of aerogel silica and kiwi vine juice are added to the papermaking raw materials. Furthermore, the paper surface is also sprayed with cationic quaternary ammonium cellulose material. This invention uses a small amount of Artemisia annua bark pulp to prepare Xuan paper. The active ingredients in Artemisia annua have insect-repellent and antibacterial effects, effectively improving the lifespan of the paper. An appropriate amount of aerogel silica is added to the mixed pulp to adjust the paper's water absorption and control ink absorption, thereby controlling ink diffusion. Simultaneously, the addition of aerogel silica effectively improves the dimensional stability of the paper, preventing excessive deformation due to water absorption. Kiwi vine juice prevents paper sheets from sticking together and becoming difficult to peel. This invention also sprays cationic quaternary ammonium cellulose onto the surface of the undried paper to further control the degree of ink diffusion, resulting in more uniform ink distribution, clearer ink density, and more distinct layers. The Xuan paper product obtained by this invention is soft, has good folding resistance, good water absorption, clear ink diffusion layers, good transitions between light and dark shades, and also exhibits good insect and antibacterial properties, good antioxidant properties, and can be preserved for a long time.

[0043] The raw Xuan paper prepared by this invention can be used for calligraphy, painting, rubbing, and mounting, meeting the requirements of this type of paper for excellent ink absorption, uniform ink diffusion, and clear distinction between light and dark ink tones; it also meets the requirements for good paper toughness, folding resistance, and tensile strength. The raw Xuan paper prepared by this invention has excellent resistance to insects and bacteria, as well as good antioxidant properties, thus enabling long-term preservation and preventing discoloration. Furthermore, the paper exhibits minimal deformation upon contact with water, good dimensional stability, and is not easily stretched or deformed. Moreover, the preparation method provided by this invention is simple, uses mild conditions, and utilizes abundant and readily available raw materials, making it more conducive to large-scale industrial production and widespread application.

[0044] Experimental results show that the raw Xuan paper prepared by this invention has an ISO whiteness of 76±1% and a density of 0.35±0.03 g / cm³. 3 Etc., fracture length ≥ 2.8 km, tear index ≥ 9.2 mN.m 2 / g, ink-wetting A value 2.3~3.5, ink-wetting D value 27%~33%, ink-wetting S value 0~5, wet elongation ≦0.75%, dry shrinkage ≦1.0%, aging resistance whiteness decrease ≦5.0%. Detailed Implementation

[0045] To further understand the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] There are no particular restrictions on the source of any raw materials used in this invention; they can be purchased from the market or prepared using conventional methods known to those skilled in the art.

[0047] There are no particular restrictions on the purity of any of the raw materials used in this invention. However, this invention preferably uses industrial-grade pure or conventionally pure materials used in the preparation of raw Xuan paper.

[0048] This invention provides a raw Xuan paper, the raw materials of which include mixed pulp, kiwi vine juice and aerogel silica;

[0049] The mixed slurry, by mass parts, includes

[0050] Paper mulberry bark pulp, 40-60 parts by weight;

[0051] 35-50 parts by weight of dragon's beard grass pulp;

[0052] Artemisia annua bark pulp 3-5 parts by weight;

[0053] The amount of kiwi vine juice added is 1-2 kg / t of the oven-dried pulp of the mixed pulp;

[0054] The amount of aerogel silica added is 0.01 to 5 kg / t of the oven-dry slurry.

[0055] In this invention, the amount of paper mulberry bark pulp added is 40-60 parts by weight, or 44-56 parts by weight, or 48-52 parts by weight.

[0056] In this invention, the amount of the dragon's beard grass pulp added is 35-50 parts by weight, or 38-47 parts by weight, or 41-54 parts by weight.

[0057] In this invention, the amount of Artemisia annua bark pulp added is 3 to 5 parts by weight, which can be 3.4 to 4.6 parts by weight or 3.8 to 4.2 parts by weight.

[0058] In this invention, "oven-dry" means that the mixed pulp is prepared into an oven-dry pulp as a reference.

[0059] In this invention, the amount of kiwi vine juice added is 1-2 kg / t of oven-dried mixed pulp, or 1.2-1.8 kg / t of oven-dried mixed pulp, or 1.4-1.6 kg / t of oven-dried mixed pulp. That is, 1-2 kg / t pulp (oven-dried), the same below.

[0060] In this invention, the amount of aerogel silica added is 0.01 to 5 kg / t of the mixed slurry in the oven-dry form, or it can be 0.1 to 4 kg / t of the mixed slurry in the oven-dry form, or it can be 1 to 3 kg / t of the mixed slurry in the oven-dry form.

[0061] In this invention, the mass concentration of the paper mulberry bark pulp is preferably 0.4-1.0%, more preferably 0.5-0.9%, and even more preferably 0.6-0.8%.

[0062] In this invention, the mass concentration of the grass pulp is preferably 0.4-1.0%, more preferably 0.5-0.9%, and even more preferably 0.6-0.8%.

[0063] In this invention, the mass concentration of the Artemisia annua bark pulp is preferably 0.4-1.0%, more preferably 0.5-0.9%, and even more preferably 0.6-0.8%.

[0064] In this invention, the raw materials preferably also include cationic quaternary ammonium cellulose.

[0065] In this invention, the amount of cationic quaternary ammonium cellulose added is preferably 0.1-0.3 kg / t oven-dry paper, more preferably 0.14-0.26 kg / t oven-dry paper, and even more preferably 0.18-0.22 kg / t oven-dry paper.

[0066] This invention provides a method for preparing raw Xuan paper as described in any of the above technical solutions, comprising the following steps:

[0067] 1) After mixing and preparing the pulp from paper mulberry bark, grass stalk pulp, and artemisia bark, a mixed pulp is obtained;

[0068] 2) After mixing the mixed pulp, kiwi vine juice and aerogel silica obtained in the above steps again, the paper is scooped out and then dried to obtain raw Xuan paper.

[0069] The present invention first mixes and blends paper mulberry bark pulp, dragon's beard grass pulp and artemisia bark pulp to obtain a mixed pulp.

[0070] In this invention, the method for preparing the paper mulberry bark pulp preferably includes the following steps:

[0071] The paper mulberry is steamed with water, the bark is peeled off and placed outdoors, then soaked in lime, the pH value is adjusted and it is fumigated, and then it is processed to obtain paper mulberry bark pulp.

[0072] In this invention, the outdoor placement time is preferably 3 to 6 months, more preferably 3.5 to 5.5 months, and even more preferably 4 to 5 months.

[0073] In this invention, the soaking time of the lime is preferably 4 days.

[0074] In this invention, the pH value is preferably adjusted to 10-11, more preferably 10.2-10.8, and even more preferably 10.4-10.6.

[0075] In this invention, the fumigation time is preferably 72 hours.

[0076] In this invention, the method for preparing the Artemisia annua bark pulp preferably includes the following steps:

[0077] Artemisia annua stalks are steamed with water, peeled, and placed outdoors. After being soaked in lime, the pH value is adjusted and the mixture is fumigated. After processing, Artemisia annua peel pulp is obtained.

[0078] In this invention, the outdoor placement time is preferably 3 to 6 months, more preferably 3.5 to 5.5 months, and even more preferably 4 to 5 months.

[0079] In this invention, the soaking time of the lime is preferably 4 days.

[0080] In this invention, the pH value is preferably adjusted to 10-11, more preferably 10.2-10.8, and even more preferably 10.4-10.6.

[0081] In this invention, the fumigation time is preferably 72 hours.

[0082] In this invention, the method for preparing the dragon's beard grass pulp preferably includes the following steps:

[0083] After soaking the dragon's beard grass in clean water, it is placed outdoors, then soaked in lime, the pH value is adjusted and it is fumigated. After being processed, it yields artemisia bark pulp.

[0084] In this invention, the soaking time in clean water is preferably 25 to 35 days, more preferably 27 to 33 days, and even more preferably 29 to 31 days.

[0085] In this invention, the outdoor placement time is preferably 3 to 6 months, more preferably 3.5 to 5.5 months, and even more preferably 4 to 5 months.

[0086] In this invention, the soaking time of the lime is preferably 4 days.

[0087] In this invention, the pH value is preferably adjusted to 10-11, more preferably 10.2-10.8, and even more preferably 10.4-10.6.

[0088] In this invention, the fumigation time is preferably 72 hours.

[0089] Finally, the mixed pulp, kiwi vine juice and aerogel silica obtained in the above steps are mixed again, then paper is made, and then dried to obtain raw Xuan paper.

[0090] In this invention, the pulp concentration during papermaking is preferably controlled to be 0.4% to 0.5%, more preferably 0.41% to 0.48%, and even more preferably 0.42% to 0.46%.

[0091] In this invention, after paper scooping, it is preferable to further include the step of spraying cationic quaternary ammonium cellulose onto the surface of the undried paper.

[0092] This invention provides a complete and detailed overall technical solution to better improve the writing performance, flexibility, and preservation properties of raw Xuan paper, while ensuring the controllability and stability of the preparation process. Specifically, the aforementioned raw Xuan paper and its preparation method may include the following:

[0093] This invention uses paper mulberry bark pulp and dragon's beard grass pulp as the main materials, supplemented with a small amount of artemisia bark pulp to make Xuan paper. A small amount of aerogel silica is added to the papermaking raw materials, and cationic quaternary ammonium cellulose material is sprayed onto the surface of the paper. The process includes:

[0094] The above three pulps are mixed at a weight percentage of 40-60% Broussonetia papyrifera bark pulp, 35-50% Agrimonia pilosa pulp, and 3-5% Artemisia annua bark pulp. 0-5 kg / t of aerogel silica is added to the pulp. After papermaking, an appropriate amount of cationic quaternary ammonium cellulose material is sprayed onto the paper surface. Subsequently, the paper is dried and sorted to produce raw Xuan paper.

[0095] Furthermore,

[0096] (1) The paper is made primarily from mulberry bark pulp and dragon's beard grass pulp, supplemented with a small amount of artemisia bark pulp. The three pulps are mixed in the following weight percentages: 40-60% mulberry bark pulp, 35-50% dragon's beard grass pulp, and 3-5% artemisia bark pulp. The active ingredients in artemisia have insect-repellent and antibacterial effects, which can effectively improve the lifespan of the paper.

[0097] (2) Add 1-2 kg / t of kiwi vine juice (octane-dry) to the mixed pulp. This prevents the paper sheets from sticking together and becoming impossible to peel.

[0098] (3) Add 0-5 kg / t of (oven-dry) aerogel silica to the mixed pulp. Aerogel silica has excellent water absorption properties. By controlling the amount of aerogel silica according to user needs, the absorption of ink can be effectively controlled, thereby controlling the diffusion of ink stains. At the same time, the addition of aerogel silica can effectively improve the dimensional stability of paper and prevent the problem of large paper deformation due to water absorption.

[0099] (4) After the paper is scooped out, spray cationic quaternary ammonium cellulose onto the surface of the undried paper, using about 0.1-0.3 kg / t of paper (octaneously dry). Cationic quaternary ammonium cellulose can further control the degree of ink diffusion, and at the same time, it can make the ink diffusion more uniform, with clearer distinction between light and dark ink colors and clearer layers.

[0100] Specifically, the paper mulberry bark pulp and artemisia bark pulp can be prepared using the following steps:

[0101] Bundles of paper mulberry and artemisia argyi are steamed with water, peeled, and then sun-dried and rain-exposed for 3 to 6 months. After natural bleaching, the paper mulberry and artemisia argyi bark are soaked in lime for 4 days, then steamed in wooden barrels for 72 hours (sodium hydroxide is added to adjust the pH to 10-11). After cleaning, impurities and inferior materials are removed, and then the pulp is beaten into paper pulp.

[0102] Specifically, the dragon's beard grass pulp can be prepared using the following steps:

[0103] For preparing the dragon beard grass, the bundled dragon beard grass is soaked in clean water (completely submerged) for about a month, then exposed to sun and rain for 3-6 months. After natural bleaching, it is soaked in lime for 4 days, then steamed in a wooden barrel for 72 hours (sodium hydroxide is added to adjust the pH to 10-11). After that, it is cleaned to remove impurities and inferior materials, and then it is pulped into paper pulp.

[0104] This invention provides a raw Xuan paper and its preparation method. This invention specifically designs a raw Xuan paper with a specific formula and composition, using paper mulberry bark pulp and dragon's beard grass pulp as the main materials, supplemented with a small amount of artemisia bark pulp to form the Xuan paper. A small amount of aerogel silica and kiwi vine juice are added to the papermaking raw materials. Furthermore, the paper surface is sprayed with cationic quaternary ammonium cellulose material. This invention uses a small amount of artemisia bark pulp to form the Xuan paper. The active ingredients in artemisia have insect-repellent and antibacterial effects, effectively improving the paper's lifespan. An appropriate amount of aerogel silica in the mixed pulp adjusts the paper's water absorption function, controlling ink absorption and thus controlling ink diffusion. Simultaneously, the addition of aerogel silica effectively improves the paper's dimensional stability, preventing excessive paper deformation due to water absorption. Kiwi vine juice prevents paper sheets from sticking together and becoming difficult to peel. This invention also sprays cationic quaternary ammonium cellulose on the surface of the undried paper to further control the degree of ink diffusion, making the ink diffusion more uniform, with clearer distinctions in ink density and layering. The Xuan paper produced by this invention is soft, durable, absorbent, and has clear ink diffusion with good gradation. It also has good insect and antibacterial properties, good antioxidant properties, and can be preserved for a long time.

[0105] The raw Xuan paper prepared by this invention can be used for calligraphy, painting, rubbing, and mounting, meeting the requirements of this type of paper for excellent ink absorption, uniform ink diffusion, and clear distinction between light and dark ink tones; it also meets the requirements for good paper toughness, folding resistance, and tensile strength. The raw Xuan paper prepared by this invention has excellent resistance to insects and bacteria, as well as good antioxidant properties, thus enabling long-term preservation and preventing discoloration. Furthermore, the paper exhibits minimal deformation upon contact with water, good dimensional stability, and is not easily stretched or deformed. Moreover, the preparation method provided by this invention is simple, uses mild conditions, and utilizes abundant and readily available raw materials, making it more conducive to large-scale industrial production and widespread application.

[0106] Experimental results show that the raw Xuan paper prepared by this invention has an ISO whiteness of 76±1% and a density of 0.35±0.03 g / cm³. 3 Etc., fracture length ≥ 2.8 km, tear index ≥ 9.2 mN.m 2 / g, ink-wetting A value 2.3~3.5, ink-wetting D value 27%~33%, ink-wetting S value 0~5, wet elongation ≦0.75%, dry shrinkage ≦1.0%, aging resistance whiteness decrease ≦5.0%.

[0107] To further illustrate the present invention, the following detailed description of a raw Xuan paper and its preparation method provided by the present invention is provided in conjunction with embodiments. However, it should be understood that these embodiments are implemented under the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given. They are only for further illustrating the features and advantages of the present invention, and are not intended to limit the scope of the claims of the present invention. The scope of protection of the present invention is not limited to the following embodiments.

[0108] Example 1

[0109] According to the material preparation requirements, paper mulberry bark pulp, dragon's beard grass pulp, and artemisia annua bark pulp are prepared. These three pulps are used to make Xuan paper, with the following weight percentages: 45% paper mulberry bark pulp, 50% dragon's beard grass pulp, and 5% artemisia annua bark pulp. 1.2 kg / t of oven-dried kiwi vine juice and 1 kg / t of aerogel silica are added to the mixed pulp, maintaining a pulp concentration of 0.4%. After paper preparation, cationic quaternary ammonium cellulose is sprayed onto the undried paper surface at a rate of approximately 0.12 kg / t. After drying and sorting, raw Xuan paper is produced.

[0110] The performance of the raw Xuan paper prepared in Example 1 of this invention was tested. The product has an ISO whiteness of 76.2% and a density of 0.35 g / cm³. 3 The fracture length was 2.9 km, and the tear index was ≥9.8 mN.m. 2 / g, ink-wetting A value 2.9, ink-wetting D value 30%, ink-wetting S value 2, elongation after wetting 0.71%, shrinkage after drying 0.9%, and whiteness decrease due to aging 0.3%.

[0111] Example 2

[0112] According to the material preparation requirements, paper mulberry bark pulp, dragon's beard grass pulp, and artemisia annua bark pulp are prepared. These three pulps are used to make Xuan paper, with the following weight percentages: paper mulberry bark pulp 50%, dragon's beard grass pulp 47%, and artemisia annua bark pulp 3%. 1.5 kg / t of kiwi vine juice and 2.5 kg / t of pulp aerogel silica are added to the mixed pulp, maintaining a pulp concentration of 0.42%. After paper preparation, cationic quaternary ammonium cellulose is sprayed onto the undried paper surface at a rate of approximately 0.15 kg / t of paper. After drying and sorting, raw Xuan paper is produced.

[0113] The performance of the raw Xuan paper prepared in Example 2 of this invention was tested. The product has an ISO whiteness of 76.5% and a density of 0.34 g / cm³. 3 The fracture length was 3.3 km, and the tear index was 9.9 mN.m. 2 / g, ink-wetting A value 2.6, ink-wetting D value 29%, ink-wetting S value 3, wet elongation 0.72%, dry shrinkage 0.89%, aging resistance whiteness decrease 0.2%.

[0114] Example 3

[0115] According to the material preparation requirements, paper mulberry bark pulp, dragon's beard grass pulp, and artemisia annua bark pulp are prepared. These three pulps are used to make Xuan paper, with the following weight percentages: paper mulberry bark pulp 55%, dragon's beard grass pulp 41%, and artemisia annua bark pulp 4%. 2 kg / t of kiwi vine juice and 5 kg / t of aerogel silica are added to the mixed pulp, maintaining a pulp concentration of 0.45%. After paper preparation, cationic quaternary ammonium cellulose is sprayed onto the undried paper surface at a rate of approximately 0.3 kg / t of paper. After drying and sorting, raw Xuan paper is produced.

[0116] The performance of the raw Xuan paper prepared in Example 3 of this invention was tested. The product has an ISO whiteness of 77.1% and a density of 0.37 g / cm³. 3 The fracture length was 3.1 km, and the tear index was 9.6 mN.m. 2 / g, ink-wetting A value 3.3, ink-wetting D value 32%, ink-wetting S value 2.5, elongation after wetting 0.73%, shrinkage after drying 0.93%, and whiteness decrease due to aging 0.6%.

[0117] The foregoing has provided a detailed description of the raw Xuan paper and its preparation method provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention, including the best mode, and also to enable any person skilled in the art to practice the present invention, including manufacturing and using any device or system, and implementing any combined method. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention. The scope of patent protection of the present invention is defined by the claims and may include other embodiments that can be conceived by those skilled in the art. If these other embodiments have structural elements similar to the wording of the claims, or if they include equivalent structural elements that are not substantially different from the wording of the claims, then these other embodiments should also be included within the scope of the claims.

Claims

1. A type of raw Xuan paper, characterized in that, The raw materials for the raw Xuan paper include mixed pulp, kiwi vine juice, and aerogel silica. The mixed slurry, by mass parts, includes Paper mulberry bark pulp, 40-60 parts by weight; 35-50 parts by weight of dragon's beard grass pulp; Artemisia annua bark pulp 3-5 parts by weight; The amount of kiwi vine juice added is 1~2 kg / t of the oven-dried pulp of the mixed pulp; The amount of aerogel silica added is 0.01~5 kg / t of the oven-dry slurry of the mixed slurry; The mass concentration of the paper mulberry bark pulp is 0.4-1.0%; The mass concentration of the *Dracaena sanderiana* pulp is 0.4-1.0%; The mass concentration of the Artemisia annua bark pulp is 0.4-1.0%; The raw materials also include cationic quaternary ammonium cellulose; The amount of cationic quaternary ammonium cellulose added is 0.1~0.3 kg / t of oven-dry paper; The method for preparing the raw Xuan paper includes the following steps: 1) After mixing and preparing the pulp from paper mulberry bark, grass stalk pulp, and artemisia bark, a mixed pulp is obtained; 2) After mixing the mixed pulp, kiwi vine juice and aerogel silica obtained in the above steps again, the paper is scooped out and then dried to obtain raw Xuan paper; The pulp concentration during papermaking is controlled to be 0.4%~0.5%; After paper retrieval, the process further includes a step of spraying cationic quaternary ammonium cellulose onto the surface of the undried paper.

2. A method for preparing raw Xuan paper as described in claim 1, characterized in that, Includes the following steps: 1) After mixing and preparing the pulp from paper mulberry bark, grass stalk pulp, and artemisia bark, a mixed pulp is obtained; 2) After mixing the mixed pulp, kiwi vine juice and aerogel silica obtained in the above steps again, the paper is scooped out and then dried to obtain raw Xuan paper; The pulp concentration during papermaking is controlled to be 0.4%~0.5%; After paper retrieval, the process further includes a step of spraying cationic quaternary ammonium cellulose onto the surface of the undried paper.

3. The preparation method according to claim 2, characterized in that, The method for preparing paper mulberry bark pulp The process includes the following: The paper mulberry is steamed with water, the bark is peeled off and placed outdoors, then soaked in lime, the pH value is adjusted and it is fumigated, and then it is processed to obtain paper mulberry bark pulp.

4. The preparation method according to claim 3, characterized in that, The outdoor placement time is 3 to 6 months.

5. The preparation method according to claim 3, characterized in that, The lime soaking time is 4 days; The pH value is adjusted to 10-11.

6. The preparation method according to claim 3, characterized in that, The fumigation time is 72 hours.

7. The preparation method according to claim 2, characterized in that, The preparation method of the Artemisia annua bark pulp includes the following steps: Artemisia annua stalks are steamed with water, peeled, and placed outdoors. After being soaked in lime, the pH value is adjusted and the mixture is fumigated. After processing, Artemisia annua peel pulp is obtained.

8. The preparation method according to claim 7, characterized in that, The outdoor placement period is 3 to 6 months; The lime soaking time is 4 days; The pH value is adjusted to 10-11; The fumigation time is 72 hours.

9. The preparation method according to claim 2, characterized in that, The method for preparing the dragon's beard grass pulp The process includes the following: After soaking the grass in clean water, it is placed outdoors, then soaked in lime, the pH value is adjusted and it is fumigated. After being processed, grass pulp is obtained.

10. The preparation method according to claim 9, characterized in that, The soaking time in clean water is 25-35 days; The outdoor placement period is 3 to 6 months; The lime soaking time is 4 days; The pH value is adjusted to 10-11; The fumigation time is 72 hours.