Preparation method of rice-like paper

Abstract

The invention provides a preparation method of rice-like paper, which comprises the following steps: by using a mixture of polyquaternium-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose and water as an auxiliary agent solution, immersing a non-woven fabric in a finishing solution (the auxiliary agent solution is dissolved in water) for finishing, and then compounding the non-woven fabric with just formed wingceltis paper together, a molecular bridge is formed at an interface by utilizing a polymer in the finishing liquid, the non-woven fabric and the wingceltis paper are organically combined, and due to the introduction of the non-woven fabric, the uniformity of rice-like paper is improved, and the expansion and contraction rate is reduced. By changing the component concentration of the finishing liquid, the regulation and control of ink absorbency, strength and durability of the rice-like paper are realized, and the effects of cooked rice and raw rice are achieved. The strength of the rice-like paper is improved, and the defect that the strength of traditional rice paper is weak is overcome; moreover, the use amount of the wingceltis bark is reduced, the use amount of the wingceltis bark only accounts for about 10% of the total mass of the Xuan-like paper, and compared with the existing cotton Xuan paper (the content of the wingceltis bark is about 40%) with the lowest content of the wingceltis bark, the use amount of the wingceltis bark is greatly reduced, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of papermaking, and in particular to a method for preparing rice paper-like paper. Background Art

[0002] Xuan paper, a traditional Chinese paper used for calligraphy and painting since ancient times, has long been a favorite of calligraphers and painters due to its excellent permeability and lubricity. However, traditional Xuan paper suffers from weak strength, complex production, and a short shelf life. Furthermore, Xuan paper is primarily categorized into three types based on its sandalwood bark content: cotton Xuan paper has a sandalwood bark content of approximately 40%, pure Xuan paper has a sandalwood bark content of approximately 60%, and special Xuan paper has a sandalwood bark content of up to 80%. The higher the sandalwood bark content, the higher the cost.

[0003] In view of this, it is necessary to design a preparation method of rice paper to solve the above problems. Summary of the Invention

[0004] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to provide a method for preparing a rice paper-like paper, which uses a mixture of polyquaternium-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose (CMC-Na) and water as an auxiliary liquid, immerses the non-woven fabric in the finishing liquid (the auxiliary liquid is dissolved in water) for finishing, and then composites it with freshly formed sandalwood paper. By changing the component concentration of the finishing liquid, the hydrophilic and hydrophobic abilities of the rice paper-like paper are adjusted, and the ink-wetting properties of the rice paper-like paper are adjusted to achieve the effects of cooked rice paper and raw rice paper; the strength of the rice paper-like paper is improved, and the shortcoming of the traditional rice paper with weak strength is solved; and the amount of sandalwood bark used is reduced, and the amount of sandalwood bark used only accounts for about 10% of the total mass of the rice paper-like paper, saving costs.

[0005] To achieve the above object, the present invention provides a method for preparing a rice paper-like product, comprising the following steps:

[0006] S1. Soak the sandalwood bark, soften it, and then crush the softened sandalwood bark to make a slurry;

[0007] S2. The support plate is shaken in the slurry obtained in step S1 2-4 times to form a piece of sandalwood paper on the support plate;

[0008] S3. The nonwoven fabric is immersed in the finishing solution, immersed for 10-30min after the padding car, maintaining a liquid rate of 100% -200%; the finishing liquid is obtained by dissolving the additive in water; the additive liquid is a mixture of polyquaternium-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose and water;

[0009] S4. Cover the treated non-woven fabric obtained in step S3 on the newly formed sandalwood paper obtained in step S2, apply a predetermined pressure after the two are tightly attached, and then dry them to obtain a rice paper-like material.

[0010] As a further improvement of the present invention, in step S3, the mass fraction of polyquaternium-7 in the additive liquid is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water.

[0011] As a further improvement of the present invention, the auxiliary agent liquid also includes polyether silicone, and the mass fraction of polyquaternium-7 in the auxiliary agent liquid is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of polyether silicone is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water.

[0012] As a further improvement of the present invention, in step S3, the finishing liquid is the auxiliary liquid diluted 100 times with water.

[0013] As a further improvement of the present invention, in step S4, after the non-woven fabric and the sandalwood paper are bonded together, it is ensured that there are no bubbles between the two, and when pressure is applied, the liquid carrying rate is maintained at 100%-200%; the predetermined pressure is 0.6-2.6kg.

[0014] As a further improvement of the present invention, in the slurry of step S1, the ratio of sandalwood bark to water is sandalwood bark: water = 1g: (100-1000)L.

[0015] As a further improvement of the present invention, the non-woven fabric is made of one or more of cotton, polyester, and wood pulp.

[0016] As a further improvement of the present invention, in step S1, the soaking time of the sandalwood bark is 10-20 minutes.

[0017] As a further improvement of the present invention, in step S1, the sandalwood bark is sun-dried sandalwood bark.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention provides a method for preparing a rice paper-like product, which uses a mixture of polyquaternium-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose and water as an auxiliary liquid. A non-woven fabric is immersed in a finishing liquid (the auxiliary liquid is dissolved in water) for finishing and then composited with newly formed sandalwood paper. The polymer in the finishing liquid is used to form a molecular bridge at the interface to organically combine the non-woven fabric and the sandalwood paper. The introduction of the non-woven fabric improves the uniformity of the rice paper-like product, reduces the shrinkage rate, and improves the strength compared to traditional rice paper, thereby solving the disadvantage of traditional rice paper having weak strength.

[0020] 2. The present invention achieves the regulation of the ink absorbency, strength and durability of rice paper-like paper by changing the component concentration of the finishing liquid, and adjusts the ink-wetting property of rice paper-like paper by adjusting the hydrophilic and hydrophobic abilities of the rice paper-like paper, thereby achieving the effects of cooked rice paper and raw rice paper; at the same time, polyquaternium-7 and polyoxyethylene alkylamine can form a multi-salt complex, which increases the tightness between the non-woven fabric and the sandalwood bark in the viscous solution of sodium carboxymethyl cellulose, making it difficult to separate the non-woven fabric and the sandalwood bark.

[0021] 3. The present invention uses a mixture of polyquaternium-7, polyoxyethylene alkylamine, polyether siloxane, sodium carboxymethylcellulose, and water as an additive liquid by adding polyether siloxane. The synergistic effect of the polyoxyethylene alkylamine and polyether siloxane not only adjusts the ink absorption properties of the rice paper-like ink, but also enhances the layering and three-dimensional effect of the rice paper-like ink compared to the addition of polyoxyethylene alkylamine alone.

[0022] 4. The preparation method of the present invention has a simple process, and the amount of sandalwood bark used only accounts for about 10% of the total mass of the rice paper. Compared with the existing cotton-made rice paper with the lowest sandalwood bark content (the sandalwood bark content is about 40%), the amount of sandalwood bark used is greatly reduced, which saves costs and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the situation of painting on the rice paper-like paper prepared in Example 1 of the present invention.

[0024] Figure 2 This is a scanning electron microscope image of the rice paper-like paper prepared in Example 1.

[0025] Figure 3 This is the situation of painting on the rice paper-like paper prepared in Example 2 of the present invention.

[0026] Figure 4 This is a scanning electron microscope image of the rice paper-like material obtained in Example 2.

[0027] Figure 5 This is the situation of painting on the rice paper-like paper prepared in Example 3 of the present invention.

[0028] Figure 6 This is a scanning electron microscope image of the rice paper-like material obtained in Example 3.

[0029] Figure 7 This is the case of painting on the rice paper-like paper prepared in Comparative Example 1.

[0030] Figure 8 This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 1.

[0031] Figure 9 This is the case of painting on the rice paper-like paper prepared in Comparative Example 2.

[0032] Figure 10This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 2.

[0033] Figure 11 This is the case of painting on the rice paper-like paper prepared in Comparative Example 3.

[0034] Figure 12 This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 3.

[0035] Figure 13 This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 4.

[0036] Figure 14 This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 5.

[0037] Figure 15 This is a scanning electron microscope image of the rice paper-like material obtained in Example 4. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions of the present invention are shown in the drawings, while other details that are not closely related to the present invention are omitted.

[0040] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0041] Traditional Xuan paper has the problems of weak strength, complex craftsmanship and short shelf life.

[0042] The present invention provides a method for preparing rice paper-like material, comprising the following steps:

[0043] S1. Soak the sandalwood bark, soften it, and then crush the softened sandalwood bark to make a slurry;

[0044] In the slurry, the ratio of sandalwood bark to water is sandalwood bark: water = 1g: (100-1000)L.

[0045] The sandalwood bark is sun-dried sandalwood bark, and the soaking time of the sandalwood bark is 10-20 minutes.

[0046] S2. The support plate is shaken in the slurry obtained in step S1 2-4 times to form a piece of sandalwood paper on the support plate;

[0047] S3. The non-woven fabric is immersed in the finishing liquid, and after being immersed for 10-30 min, the non-woven fabric is passed through a roller to keep the liquid rate at 100%-200%; the finishing liquid is obtained by dissolving the auxiliary liquid in water; the auxiliary liquid is a mixture of polyquaternary ammonium salt-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose and water;

[0048] In the auxiliary liquid, the mass fraction of polyquaternary ammonium salt-7 is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water.

[0049] Further, the auxiliary liquid further comprises polyether siloxane. In the auxiliary liquid, the mass fraction of polyquaternary ammonium salt-7 is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of polyether siloxane is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water. In this way, the polyoxyethylene alkylamine and the polyether siloxane jointly act to not only adjust the ink absorption of the imitation xuan paper, but also enhance the level and stereoscopic sense of the imitation xuan paper.

[0050] The material of the non-woven fabric is one or several of cotton, polyester and wood pulp.

[0051] In the auxiliary liquid, the mass fraction of polyquaternary ammonium salt-7 is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water.

[0052] S4. The treated non-woven fabric obtained in step S3 is covered on the just-formed sandalwood bark paper obtained in step S2, and after the two are tightly attached, a predetermined pressure is given, and then the sandalwood bark paper is dried, to obtain an imitation xuan paper.

[0053] In the auxiliary liquid, the mass fraction of polyquaternary ammonium salt-7 is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water.

[0054] The application uses a mixture of polyquaternary ammonium salt-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose and water as an auxiliary liquid, immerses the non-woven fabric in the finishing liquid (the auxiliary liquid is dissolved in water) to finish, and then composites the non-woven fabric with the just-formed sandalwood bark paper. By changing the component concentration of the finishing liquid, the hydrophilicity and hydrophobicity of the imitation xuan paper are adjusted, the ink absorption of the imitation xuan paper is adjusted, the effects of mature xuan paper and raw xuan paper are achieved, the strength of the imitation xuan paper is improved, the shortcoming of weak strength of traditional xuan paper is solved, the amount of sandalwood bark is reduced, the amount of sandalwood bark accounts for about 10% of the total mass of the imitation xuan paper, and the cost is saved.

[0055] The preparation method of the imitation xuan paper provided by the application will be described below in combination with specific examples.

[0056] Example 1

[0057] Example 1 provides a method for preparing a rice paper-like product, comprising the following steps:

[0058] S1. Soak 20 g of sandalwood bark for 10 min to soften it; then, crush the softened sandalwood bark and add 6 L of deionized water, stirring evenly to form a slurry.

[0059] S2. Shake the support plate in the slurry twice to form a piece of sandalwood paper on the support plate.

[0060] S3. Add 2g of the finishing solution to 1L of deionized water and stir thoroughly to obtain a finishing solution with a concentration of 2g / L. The finishing solution contains 30% polyquaternium-7, 2% polyoxyethylene alkylamine, and 0.5% sodium carboxymethyl cellulose. Immerse the cotton nonwoven fabric in the finishing solution for 20 minutes and then pass it through a roller to maintain a 200% liquid pick-up rate.

[0061] S4. The treated cotton nonwoven fabric is covered on the newly formed sandalwood paper, and after the two are close together, a certain pressure (0.6kg) is applied, and the liquid rate is maintained at 200%. The paper is dried at 80 ° C to obtain a class of rice paper with good ink-wetting properties, which can achieve the effect of raw rice paper painting and calligraphy. The painting on the class of rice paper obtained in Example 1 is as follows. Figure 1 shown.

[0062] Figure 2 This is a scanning electron microscope image of the rice paper-like paper prepared in Example 1. It can be seen that the fibers are arranged relatively loosely and the pore size is relatively large, showing the original state of the fibers in the rice paper, which are naturally loose and of varying thickness.

[0063] Example 2

[0064] Example 2 provides a method for preparing rice paper-like material. The main difference from Example 1 is that the concentration of each component in the additive solution is changed. The details are as follows:

[0065] S1. Soak 20g of sandalwood bark for 10 minutes to soften it. Then, crush the softened bark and add 6L of deionized water. Stir well to form a slurry.

[0066] S2. The tray is shaken twice in the slurry into the water to form a piece of sandalwood paper on the tray;

[0067] S3. Add 2 g of the finishing solution to 1 L of deionized water and stir thoroughly to obtain a finishing solution with a concentration of 2 g / L. The finishing solution contains 10% polyquaternium-7, 10% polyoxyethylene alkylamine, and 1% sodium carboxymethyl cellulose. Immerse the polyester nonwoven fabric in the finishing solution for 30 minutes and then pass it through a roller to maintain a liquid pick-up rate of 150%.

[0068] S4. Cover the treated polyester non-woven fabric on the newly formed sandalwood paper, apply a certain pressure (2.6 kg) after the two are close together, maintain 100% liquid rate, and dry at 80 ° C. The obtained rice paper with general ink absorption properties can achieve the effect of cooked rice paper for calligraphy and painting. The painting on the rice paper obtained in Example 2 is as follows Figure 3 shown.

[0069] Figure 4 This is a scanning electron microscope image of the rice paper-like paper prepared in Example 2. It can be seen that the fiber surface is smooth, the gaps between the fibers are reduced, and it presents characteristics similar to the glue alum film covering the cooked rice paper.

[0070] Example 3

[0071] Example 3 provides a method for preparing rice paper-like material, which differs from Example 1 mainly in that the concentrations of the components in the additive solution are changed. The details are as follows:

[0072] S1. Soak 20 g of sandalwood bark for 10 min to soften it. Then, crush the softened sandalwood bark and add 6 L of deionized water. Stir well to form a slurry.

[0073] S2. The tray is shaken twice in the slurry into the water to form a piece of sandalwood paper on the tray;

[0074] S3. Add 2g of the finishing solution to 1L of deionized water and stir thoroughly to obtain a finishing solution with a concentration of 2g / L. The finishing solution contains 20% polyquaternium-7, 5% polyoxyethylene alkylamine, and 0.5% sodium carboxymethyl cellulose. Immerse the polyester nonwoven fabric in the finishing solution for 15 minutes and then pass it through a roller to maintain a 100% liquid pick-up rate.

[0075] S4. Cover the treated polyester non-woven fabric on the newly formed sandalwood paper, apply a certain pressure (1.8 kg) after the two are close together, maintain a liquid rate of 150%, and dry at 80 ° C. This will obtain a rice paper with moderate ink-wetting properties, which can achieve the effect of half-cooked rice paper for calligraphy and painting. The painting on the rice paper obtained in Example 3 is as follows Figure 5 shown.

[0076] Figure 6 This is a scanning electron microscope image of the rice paper-like paper prepared in Example 3. It can be seen that its fiber state is between the raw rice paper state of Example 1 and the cooked rice paper state of Example 2.

[0077] Comparative Example 1

[0078] Comparative Example 1 provides a method for preparing similar rice paper. The main difference from Example 1 is that no polyquaternium-7 is added to the auxiliary agent solution in step S3. The rest is roughly the same as Example 1 and will not be repeated here. Figure 7shown.

[0079] Figure 8 This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 1. It can be seen that the fiber surface is covered with a layer of colloid film, the surface is smoother, and the fiber gaps are filled, which causes the ink to stay on the surface.

[0080] Comparative Example 2

[0081] Comparative Example 2 provides a method for preparing similar rice paper. The main difference from Example 1 is that no polyoxyethylene alkylamine is added to the auxiliary agent liquid in step S3. The rest is roughly the same as Example 1 and will not be repeated here. Figure 9 shown.

[0082] Figure 10 This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 2. It can be seen that its fibers are rough and burrs are obvious, which will lead to uneven calligraphy and painting, rough edges, etc.

[0083] Comparative Example 3

[0084] Comparative Example 3 provides a method for preparing similar rice paper. The main difference from Example 1 is that no sodium carboxymethyl cellulose is added to the auxiliary agent liquid in step S3. The rest is roughly the same as Example 1 and will not be repeated here. Figure 11 shown.

[0085] Figure 12 This is a scanning electron microscope image of the rice paper-like paper prepared in Comparative Example 3. It can be seen that its fibers are rough and burrs are obvious, which will lead to uneven calligraphy and painting, rough edges, etc.

[0086] Examples 4-6

[0087] Examples 4-6 provide a method for preparing rice paper-like materials, which differ from Example 1 primarily in that the additive solution further includes polyether siloxane, and the composition of the additive solution in step S3 is shown in Table 1. The remainder is substantially the same as Example 1 and will not be further described.

[0088] Comparative Examples 4-5

[0089] Comparative Examples 4-5 provide a method for preparing rice paper-like products, which differ from Example 1 only in that the concentrations of the components in the additive solution are changed, as shown in Table 1. The rest are roughly the same as Example 1 and will not be repeated here.

[0090] Table 1

[0091]

[0092] Painting was performed on the products obtained in Examples 1-6 and Comparative Examples 1-5, and the results are shown in the following table.

[0093]

[0094]

[0095] Figure 13 、 Figure 14 The scanning electron microscope images of the rice paper-like papers prepared in comparative examples 4 and 5 are shown. It can be seen that the fiber surfaces are covered with a layer of colloid film, the surface is smoother, and the fiber gaps are filled, which causes the ink to stay on the surface.

[0096] It can be seen from painting on it that when the mass fraction of polyquaternium salt-7 is higher than 30% (Comparative Example 4), the ink is not easy to spread when painting on the prepared rice paper-like paper; when the mass fraction of polyoxyethylene alkylamine is higher than 5% (Comparative Example 5), the calligraphy and painting on the prepared rice paper-like paper are uneven.

[0097] Figure 15 This is a scanning electron microscope image of the rice paper-like material obtained in Example 4. As can be seen, the fiber surface pores are large and densely distributed, and a large number of interconnected micron-scale channels are formed between the fibers. This allows ink to easily penetrate and diffuse when painting on this type of rice paper.

[0098] Test method:

[0099] Water absorption rate test (quantitative)

[0100] Drop method: Use a micropipette to drop 0.05 mL of distilled water on the paper surface, and use a high-speed camera to record the time it takes for the drop to fully penetrate.

[0101] Ink diffusion analysis (semi-quantitative)

[0102] Standard ink drop test method: Use ink of the same concentration (Six Dynasties Hui ink) to drop onto the paper surface and measure the ink halo diffusion diameter for 30 seconds.

[0103] The properties of the rice paper-like papers prepared in Examples 1-6 and Comparative Examples 1-5 were tested, and the test results are shown in Table 2.

[0104] Table 2

[0105]

[0106]

[0107] The ordinary printing paper is Coral Sea A4 printing paper purchased from Deli Group Co., Ltd.

[0108] Raw rice paper is provided by China Red Star Xuan Paper Group Co., Ltd.

[0109] Cooked rice paper is provided by China Red Star Xuan Paper Group Co., Ltd.

[0110] Experiment shows that polyquaternium-7 is not added in comparative example 1, and the water droplet penetration time becomes large, indicating that the water absorption of paper is deteriorated. Mainly due to the fact that polyquaternium-7 has a positive charge, can be adsorbed on the negatively charged cellulose surface by electrostatic attraction, and cationic polyquaternium-7 and anion CMC-Na form polyelectrolyte complex (PEC) by electrostatic attraction, strengthen the attachment on the fiber surface, simultaneously, complex combines the hydrophilic quaternary ammonium group of polyquaternium-7 and the carboxymethyl group of CMC-Na, forms the network structure with wettability and water retention concurrently, further strengthens the water absorption of paper. And after lacking polyquaternium-7, the hydrophilic network structure formed with CMC-Na no longer exists, and the water absorption and ink-wetting effect of sample is significantly reduced.

[0111] Comparative Example 2, in which no polyoxyethylene alkylamine was added, resulted in a shorter water droplet penetration time and a larger ink halo diffusion diameter, demonstrating excellent water absorption. This is because polyoxyethylene alkylamine, acting as a compatibilizer between polyquaternium-7 and CMC-Na, reduces charge conflicts and promotes uniform dispersion. Without polyoxyethylene alkylamine, the particles in the solution are unevenly dispersed, resulting in good water absorption but uneven absorption and frayed edges.

[0112] Comparative Example 3 lacks sodium carboxymethylcellulose, resulting in a shorter water droplet penetration time, indicating excellent water absorption. However, the water absorption and ink wetting properties of the paper are inferior to those of the sample in Example 1. This is primarily due to the strong hydrophilicity and high water retention of CMC-Na, which can absorb large amounts of water through hydrogen bonds, significantly increasing the paper's water absorption and retention capacity. Furthermore, CMC-Na electrostatically anchors to the polyquaternium-7, forming a highly water-retaining coating. It also forms a complex network with polyoxyethylene alkylamine, maintaining moderate openness of interfiber pores and balancing water absorption rate and water retention. CMC-Na provides a foundation for water absorption; the absence of sodium carboxymethylcellulose reduces water absorption and ink wetting properties.

[0113] Comparing Example 1 and Example 4, it is known that in Example 4, due to polyoxyethylene alkylamine and polyether siloxane acting in conjunction, on the one hand as a bridge, the uniform blend of polyquaternium-7 and CMC-Na component in the regulator solution, regulates surface hydrophilicity and hydrophobicity balance, prevents film from being too dense, keeps pore open. On the other hand, the siloxane segment in polyether siloxane can introduce slight hydrophobic region, forms a hydrophobic layer and hinders water absorption. Both exist simultaneously, and enhance the sense of hierarchy and the three-dimensional sense of calligraphy and painting. Only add one of them, although sample has good water absorbency as xuan paper, ink can be immersed in sample interior moment, and different from xuan paper in feel, does not possess permeability.

[0114] The tensile strength and tensile index of the samples prepared in Examples 1-6 are higher than those of ordinary rice paper.

[0115] When the mass fraction of polyquaternium-7 was higher than 30% (Comparative Example 4) or the mass fraction of polyoxyethylene alkylamine was higher than 5% (Comparative Example 5), the tensile strength and tensile index of the samples were similar to those in Example 1. Overall, the mechanical properties did not vary much between the samples, but were far stronger than rice paper.

[0116] However, when the mass fraction of polyquaternium-7 is higher than 30% (Comparative Example 4), the use of excessive polyquaternium-7 will weaken the effect of CMC-Na, resulting in a decrease in water absorption.

[0117] When the mass fraction of polyoxyethylene alkylamine is higher than 5% (Comparative Example 5), a film will form on the surface of the sample, affecting the water absorption performance of the sample.

[0118] Experiments show that when the mass fraction of polyether siloxane is higher than 5%, the excessive hydrophobic siloxane segments in the polyether siloxane will reduce the water absorption of the sample, resulting in reduced water absorption of the sample and difficulty in the ink being immersed in the sample.

[0119] In summary, the present invention uses a mixture of polyquaternium-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose and water as an auxiliary liquid, immerses the non-woven fabric in the finishing liquid (the auxiliary liquid is dissolved in water) for finishing, and then composites it with the newly formed sandalwood paper. By changing the component concentration of the finishing liquid, the hydrophilic and hydrophobic abilities of the rice paper-like paper are adjusted, and the ink-wetting properties of the rice paper-like paper are adjusted to achieve the effects of cooked rice paper and raw rice paper; the strength of the rice paper-like paper is improved, and the shortcoming of the traditional rice paper with weak strength is solved; and the amount of sandalwood bark used is reduced, and the amount of sandalwood bark used only accounts for about 10% of the total mass of the rice paper-like paper, thereby saving costs.

[0120] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for preparing rice paper-like material, characterized in that: The following steps are involved: S1. Soak the sandalwood bark, soften it, and then crush the softened sandalwood bark to make a slurry; S2. The support plate is shaken in the slurry obtained in step S1 2-4 times to form a piece of sandalwood paper on the support plate; S3. The nonwoven fabric is immersed in the finishing solution, immersed for 10-30min after the padding car, maintaining a liquid rate of 100% -200%; the finishing liquid is obtained by dissolving the additive in water; the additive liquid is a mixture of polyquaternium-7, polyoxyethylene alkylamine, sodium carboxymethyl cellulose and water; S4. Cover the treated non-woven fabric obtained in step S3 on the newly formed sandalwood paper obtained in step S2, apply a predetermined pressure after the two are tightly attached, and then dry them to obtain a rice paper-like material.

2. The method for preparing rice paper-like product according to claim 1, wherein: In step S3, the mass fraction of polyquaternium-7 in the additive solution is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water.

3. The method for preparing rice paper-like product according to claim 1, wherein: The auxiliary agent liquid also includes polyether silicone. The mass fraction of polyquaternium-7 in the auxiliary agent liquid is 20%-30%, the mass fraction of polyoxyethylene alkylamine is 1%-5%, the mass fraction of polyether silicone is 1%-5%, the mass fraction of sodium carboxymethyl cellulose is 0.1%-1%, and the rest is deionized water.

4. The method for preparing rice paper-like product according to claim 1, wherein: In step S3, the finishing liquid is prepared by diluting the auxiliary liquid 100 times with water.

5. The method for preparing rice paper-like product according to claim 1, wherein: In step S4, after the non-woven fabric and the sandalwood paper are attached, it is ensured that there are no bubbles between the two, and when pressure is applied, the liquid carrying rate is maintained at 100%-200%; the predetermined pressure is 0.6-2.6kg.

6. The method for preparing rice paper-like material according to claim 1, wherein: In the slurry of step S1, the ratio of sandalwood bark to water is sandalwood bark: water = 1 g: (100-1000) L.

7. The method for preparing rice paper-like product according to claim 1, wherein: The non-woven fabric is made of one or more of cotton, polyester and wood pulp.

8. The method for preparing rice paper-like material according to claim 1, wherein: In step S1, the soaking time of the sandalwood bark is 10-20 minutes.

9. The method for preparing rice paper-like material according to claim 1, wherein: In step S1, the sandalwood bark is sun-dried sandalwood bark.

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