A method for recycling and reusing Chinese medicine residue resources and pulp molded packaging products

Abstract

The present application relates to the technical field of recycling Chinese medicine residue resources, and specifically discloses a method for recycling and reusing Chinese medicine residue resources and a pulp molded packaging product. The method for recycling and reusing Chinese medicine residue resources comprises the following steps: preparing raw materials; stirring and soaking Chinese medicine residue and part of water to obtain a premix; stirring plant fiber and waste paper, adding the remaining water, premix, and polyacrylamide, stirring, pulping, and beating to obtain a mixed slurry; adding cationic starch, silane coupling agent, and amphoteric surfactant to the mixed slurry, stirring, adding titanium dioxide, stirring, and obtaining a mixed material; filtering the mixed material, hot pressing, and drying to obtain a pulp molded packaging product. The method for recycling and reusing Chinese medicine residue resources not only realizes the recycling of Chinese medicine residues, but also helps the construction of circular economy of Chinese medicine enterprises, while improving the mechanical strength and whiteness of pulp molded packaging products to meet market demand.

Description

Technical Field

[0001] The present application relates to the technical field of Chinese medicine residue resource recovery, and more specifically, to a Chinese medicine residue resource recovery and recycling method and a pulp molded packaging product. Background Art

[0002] With the increasing attention paid to the cause of traditional Chinese medicine in my country, the scale of production and development of the traditional Chinese medicine industry has gradually expanded. In the process of traditional Chinese medicine production, traditional Chinese medicine residues are inevitably produced. Traditional Chinese medicine residues are the main solid waste obtained after the processing of traditional Chinese medicine. If the traditional Chinese medicine residues are filled directly, it will not only occupy a large area, but also cause a large amount of waste of materials; if the traditional Chinese medicine residues are directly incinerated, it will undoubtedly produce a large amount of pollutants such as smoke and dust, which will pollute the environment. Because traditional Chinese medicine residues contain protein, cellulose, reducing sugar, amino acids, etc. Therefore, most researchers ferment traditional Chinese medicine residues and further use them in agriculture and animal husbandry to achieve resource recycling. There are also a few researchers who use traditional Chinese medicine residues in pulping technology and further process them into pulp products. However, the mechanical strength of pulp products obtained by processing traditional Chinese medicine residues is relatively low and needs to be further improved. Summary of the invention

[0003] In order to improve the mechanical strength of pulp molded packaging products obtained by processing traditional Chinese medicine residues and enhance the stability of pulp molded packaging products in use, the present application provides a method for recycling and reusing traditional Chinese medicine residue resources and pulp molded packaging products.

[0004] In the first aspect, the present application provides a method for recycling and reusing Chinese medicine residue resources, which adopts the following technical solution:

[0005] A method for recycling and reusing Chinese medicine residue resources comprises the following steps:

[0006] S1. Prepare the following raw materials: 2000 parts by weight of water, 20-30 parts by weight of Chinese medicinal residues, 20-30 parts by weight of waste paper, 45-55 parts by weight of plant fiber, 1-3 parts by weight of polyacrylamide, 7-9 parts by weight of titanium dioxide, 4-6 parts by weight of cationic starch, 0.5-1.5 parts by weight of silane coupling agent, and 0.1-0.5 parts by weight of amphoteric surfactant;

[0007] S2, stirring and mixing the Chinese medicine residue and part of the water, and soaking for 2-4 days to obtain a premix;

[0008] S3, stirring and mixing the plant fiber and waste paper, then adding the remaining water, premix and polyacrylamide, stirring and mixing, crushing and beating the pulp to obtain a mixed pulp;

[0009] S4, adding cationic starch, silane coupling agent, and amphoteric surfactant to the mixed slurry, stirring and mixing, and then adding titanium dioxide, stirring and mixing to obtain a mixed material;

[0010] S5, draining the mixture, forming it, hot pressing it to shape it, and drying it to obtain a pulp molded packaging product.

[0011] By adopting the above technical scheme, an amphoteric surfactant is added to the mixed slurry, which has a good volume expansion effect and improves the uniformity and stability of raw material mixing. Cationic starch is added to the mixed slurry, which can play a bonding role and enhance the fiber bonding strength. A silane coupling agent is also added simultaneously, which can not only increase the dispersibility of the raw materials, but also form a connection between organic and inorganic. Titanium dioxide is also added simultaneously, which not only enhances the mechanical properties of pulp molded packaging products, but also enables pulp molded packaging products to form a three-dimensional network structure, increase the tear index, tensile index, and compressive index, but also increases the whiteness of pulp molded packaging products, and improves the applicability of pulp molded packaging products. In this application, through the synergistic effect between cationic starch and silane coupling agent, combined with titanium dioxide, the tear index of pulp molded packaging products is greater than 21mN.m 2 / g, tensile index>52N.m / g, compressive index>61N.m 2 / g, thus showing the advantage of high strength and meeting market demand.

[0012] In the present application, through the mutual coordination between various steps and raw materials, the Chinese medicine residue is recovered and applied to pulp molded packaging products. The pulp molded packaging products are used for the outer molded packaging of Chinese medicine. This not only realizes the recycling and reuse of resources, but also uses local materials for Chinese medicine residue, which helps the construction of circular economy of Chinese medicine enterprises, creates packaging characteristics of Chinese medicine enterprises, realizes industrial mass production and application, and meets market demand.

[0013] Optionally, the weight ratio of part of the water in step S1 to the remaining water in step S2 is 1:(3-5).

[0014] On the basis of a certain total water consumption, the weight ratio of partial water and remaining water is optimized, and the water consumption of traditional Chinese medicine residue, plant fiber and waste paper is reasonably designed to improve the uniformity of raw material mixing and the performance of mixed slurry.

[0015] Optionally, the moisture content of the Chinese medicine residue is ≤5%, and / or,

[0016] The Chinese medicine residues are one or more of root Chinese medicine residues, stem Chinese medicine residues, and leaf Chinese medicine residues.

[0017] When the moisture content of Chinese medicine residue is too high, it affects the amount of Chinese medicine residue added. Limiting the moisture content of Chinese medicine residue facilitates the control of the amount of Chinese medicine residue added. The composition of Chinese medicine residue is also optimized. Compared with seed Chinese medicine residue and fruit Chinese medicine residue, root Chinese medicine residue, stem Chinese medicine residue and leaf Chinese medicine residue can provide a large amount of plant fiber, increase the fiber content and bonding strength in the mixed slurry, and reduce the impact of Chinese medicine residue on the mixed slurry.

[0018] The root Chinese medicine residue, stem Chinese medicine residue, and leaf Chinese medicine residue are respectively the residues produced by the root Chinese medicine materials, stem Chinese medicine materials, and leaf Chinese medicine materials recorded in the Chinese Medicine Dictionary. For example, the root Chinese medicine materials are Panax notoginseng, Chuanwu, Angelica sinensis, Isatis indigotica, etc. The stem Chinese medicine materials are Aquilaria sinensis, Ephedra sinica, Millettia reticulata, etc. The leaf Chinese medicine materials are Senna leaf, Citrus aurantium leaf, Pogostemon cablin leaf, Senna leaf, etc.

[0019] Furthermore, the plant fiber is a mixture of wheat and straw in a weight ratio of 1:(0.3-0.5). In one embodiment, the plant fiber is a mixture of wheat and straw in a weight ratio of 1:0.4, and the ratio can also be adjusted to 1:0.3, 1:0.5, etc. as needed.

[0020] Optionally, in step S3, the beating degree of the mixed slurry is 50-55°SR.

[0021] By adopting the above technical solution, the beating degree is optimized, and the tear index, tensile index and compressive index of the pulp molded packaging products are further improved, showing better mechanical properties.

[0022] Optionally, in step S5, the temperature of hot pressing is 85-95°C, the pressure is 0.5-0.7 MPa, and the time is 40-50s.

[0023] After filtering the water, the mixed material is initially formed into a wet blank, and then further dehydrated and shaped by hot pressing, and then dried to obtain a pulp molded packaging product. Optimizing the temperature, pressure, and time of the hot pressing shaping process not only facilitates the selection of hot pressing shaping conditions, but also reduces damage caused by too high temperature, too much pressure, and too long time, and also reduces curling deformation caused by too low temperature, too little pressure, and too short time. In this application, the qualified rate and quality of pulp molded packaging products are improved by the mutual coordination of temperature, pressure, and time.

[0024] In one embodiment, the temperature of the hot pressing is 90° C., the pressure is 0.6 MPa, and the time is 45 seconds. It can also be adjusted to the temperature of the hot pressing is 85° C., the pressure is 0.7 MPa, and the time is 50 seconds, or the temperature of the hot pressing is 95° C., the pressure is 0.6 MPa, and the time is 40 seconds, etc., as required.

[0025] Optionally, the silane coupling agent is one or more of γ-(methacryloyloxy)propyltrimethoxysilane, γ-glycidyloxypropyltrimethoxysilane, 3-aminopropyltriethoxysilane, and / or,

[0026] The amphoteric surfactant is one or more of 3-sulfopropyltetradecyldimethylammonium, 3-(N,N-dimethylhexadecylamino)propane sulfonate, and 3-(decyldimethylammonium)propane-1-sulfonic acid inner salt.

[0027] By adopting the above technical solution, the silane coupling agent and the amphoteric surfactant are optimized, which facilitates the selection of the silane coupling agent and the amphoteric surfactant.

[0028] Optionally, the titanium dioxide is pretreated as follows before use:

[0029] Sa. Add initiator and chain transfer agent into water, stir and mix to obtain a premixed solution;

[0030] Sb, add titanium dioxide to water at a temperature of 50-60°C, ultrasonically treat for 20-40 minutes, then add silane coupling agent, stir for 1-3 hours, then add diallyldimethylammonium chloride and 2-propylene-1-sulfonic acid sodium salt, stir and mix, then add premixed liquid, stir for 8-12 hours, filter, and dry to obtain pretreated titanium dioxide.

[0031] First, the mixture of titanium dioxide and water is ultrasonicated to improve the dispersibility of titanium dioxide, and then a silane coupling agent is added, which is grafted onto the surface of titanium dioxide to increase the surface active groups of titanium dioxide. Then, diallyldimethylammonium chloride, 2-propylene-1-sulfonic acid sodium salt and premixed liquid are added. Diallyldimethylammonium chloride contains 2 carbon-carbon double bonds and 1 quaternary amine group, and 2-propylene-1-sulfonic acid sodium salt contains 1 carbon-carbon double bond and 1 sulfate group, which can undergo polymerization reaction on the surface of titanium dioxide in the presence of an initiator and a chain transfer agent to form a polymer, and heat treatment is performed to increase the reaction rate, and further complete the pretreatment of titanium dioxide. In this application, by the mutual cooperation of diallyldimethylammonium chloride and 2-propylene-1-sulfonic acid sodium salt, the surface of titanium dioxide contains sulfate groups and quaternary amine groups, the use effect of titanium dioxide is increased, and the mechanical strength of pulp molded packaging products is further increased, so that it exhibits better comprehensive performance and meets higher requirements.

[0032] Optionally, the weight ratio of the titanium dioxide, silane coupling agent, diallyldimethylammonium chloride, 2-propylene-1-sulfonic acid sodium salt, initiator and chain transfer agent is 50:(1-3):(5-15):(2-4):(0.1-0.3):(0.1-0.3).

[0033] By adopting the above technical scheme, the weight ratio of titanium dioxide, silane coupling agent, diallyldimethylammonium chloride, 2-propylene-1-sulfonic acid sodium salt, initiator and chain transfer agent is optimized to facilitate the pretreatment of titanium dioxide.

[0034] Furthermore, in step Sa, the weight ratio of water to initiator is (10-30):(0.1-0.3). In one embodiment, the weight ratio of water to initiator is 10:0.1, which can also be adjusted to 10:0.3, 30:0.1, etc. as needed.

[0035] In step Sb, the weight ratio of water to titanium dioxide is (8-10): 1. In one embodiment, the weight ratio of water to titanium dioxide is 9.6: 1, which can also be adjusted to 8: 1, 9: 1, 10: 1, etc. as needed.

[0036] Optionally, the initiator is ammonium persulfate, and / or the chain transfer agent is sodium formate.

[0037] In a second aspect, the present application provides a pulp molded packaging product, which adopts the following technical solution:

[0038] A pulp molded packaging product is obtained by processing using the above-mentioned method for recycling and reusing traditional Chinese medicine residue resources.

[0039] In summary, this application has at least the following beneficial effects:

[0040] 1. The Chinese medicine residue resource recycling and utilization method of the present application adds cationic starch, silane coupling agent and titanium dioxide to the raw materials to make the tear index of the pulp molded packaging product greater than 21mN.m 2 / g, tensile index>52N.m / g, compressive index>61N.m 2 / g, ISO whiteness>88%, thus showing the advantages of high mechanical strength and high whiteness. The Chinese medicine residue resource recycling and reuse method of the present application realizes the recycling and reuse of Chinese medicine residue resources, and helps the construction of circular economy of Chinese medicine enterprises, creates packaging characteristics of Chinese medicine enterprises, and meets market demand.

[0041] 2. Before using titanium dioxide, diallyldimethylammonium chloride and sodium 2-propylene-1-sulfonate are used for pretreatment. The polymerization reaction between them is used to increase the sulfate groups and quaternary ammonium groups on the surface of titanium dioxide, improve the dispersibility and bonding strength of titanium dioxide, and increase the comprehensive performance of pulp molding packaging materials to meet higher requirements. DETAILED DESCRIPTION

[0042] In order to make the present application easier to understand, the present application will be further described in detail below in conjunction with the examples, which are merely illustrative and are not intended to limit the scope of application of the present application. The raw materials or components used in the present application can be obtained through commercial routes or conventional methods unless otherwise specified.

[0043] Example

[0044] Table 1 Raw material content of pulp molded packaging products (unit: kg)

[0045]

[0046]

[0047] Example 1

[0048] A method for recycling and reusing Chinese medicine residue resources comprises the following steps:

[0049] S1. Prepare raw materials. The specific raw material ratio is shown in Table 1.

[0050] Among them, the average particle size of the Chinese medicine residue is 550μm, and the Chinese medicine residue is divided into two types: root Chinese medicine residue and stem Chinese medicine residue, and the weight ratio of root Chinese medicine residue and stem Chinese medicine residue is 2:1. Waste paper is recycled waste corrugated cardboard; plant fiber is a mixture of wheat and straw with a weight ratio of 1:0.4; polyacrylamide is selected from Guangdong Shouxin Environmental Protection Materials Technology Co., Ltd.; titanium dioxide is anatase titanium dioxide, selected from Tianjin Master Titanium Dioxide MA-55; cationic starch is quaternary ammonium cationic starch, and is selected from Jiangxi Changsheng Chemical Co., Ltd.; silane coupling agent is γ-(methacryloyloxy)propyltrimethoxysilane; amphoteric surfactant is 3-sulfopropyltetradecyldimethylammonium.

[0051] S2. Add Chinese medicinal residues and part of water into mixing barrel a, stir for 30 minutes, and soak for 3 days to obtain a premix.

[0052] The usage of partial water is 20wt% of the total amount of water.

[0053] S3. Add plant fiber and waste paper into the stirring tank a and stir for 20 minutes. Then add the remaining water, premix and polyacrylamide and stir for 60 minutes. Then transfer to the hydraulic pulper and pulp for 50 minutes. Then transfer to the disc mill for pulping until the beating degree is 50°SR to obtain a mixed pulp.

[0054] The amount of remaining water used is 80wt% of the total amount of water. At this time, the weight ratio of partial water to remaining water is 1:4.

[0055] S4, adding cationic starch, silane coupling agent and amphoteric surfactant to the mixed slurry, stirring for 30 minutes, then adding titanium dioxide, stirring for 60 minutes, and obtaining a mixed material.

[0056] S5. Use a pulp molding machine to drain and mold the mixture. Then, heat press and shape it for 45 seconds at a temperature of 90° C. and a pressure of 0.6 MPa. Then, dry it at a temperature of 90° C. for 1 hour to obtain a pulp molded packaging product.

[0057] Example 2

[0058] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 1 in that the raw material ratio in step S1 is different, and the specific raw material ratio is shown in Table 1.

[0059] Example 3

[0060] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 1 in that the raw material ratio in step S1 is different, and the specific raw material ratio is shown in Table 1.

[0061] Example 4

[0062] A method for recycling and reusing Chinese medicine residue resources, which differs from Example 1 in that, in step S3, after being transferred to a disc grinder, the pulping degree is 55° SR to obtain a mixed slurry.

[0063] Example 5

[0064] A method for recycling and reusing Chinese medicine residue resources, which differs from Example 1 in that, in step S3, after being transferred to a disc grinder, the pulping degree is 65° SR to obtain a mixed slurry.

[0065] Example 6

[0066] A method for recycling and reusing Chinese medicine residue resources, which differs from Example 1 in that, in step S3, after being transferred to a disc grinder, the pulping degree is 40° SR to obtain a mixed slurry.

[0067] Example 7

[0068] A method for recycling and reusing Chinese medicine residue resources, which differs from Example 1 in that titanium dioxide is pretreated before use, and the titanium dioxide is pretreated by the following method:

[0069] Sa. Add 20 kg of water into mixing barrel b, then add 0.2 kg of initiator and 0.2 kg of chain transfer agent, stir for 30 min to obtain a premixed solution.

[0070] Among them, the initiator is ammonium persulfate and the chain transfer agent is sodium formate.

[0071] Sb, add 480kg of water to an ultrasonic stirring tank at a temperature of 55°C, then add 50kg of titanium dioxide, and ultrasonically treat for 30 minutes at a frequency of 25KHz. Then add 2kg of silane coupling agent and stir for 2h. Then add 10kg of diallyldimethylammonium chloride and 3kg of 2-propylene-1-sulfonic acid sodium salt and stir for 40min. Then add the premixed liquid and stir for 10h. Then filter, and then dry at a temperature of 90°C for 2h to obtain the pretreated titanium dioxide.

[0072] Wherein, the silane coupling agent is γ-(methacryloyloxy)propyltrimethoxysilane.

[0073] Example 8

[0074] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 7 in that, in the pretreatment of titanium dioxide, an equal amount of diallyldimethylammonium chloride is used to replace 2-propylene-1-sulfonic acid sodium salt.

[0075] Example 9

[0076] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 7 in that, in the pretreatment of titanium dioxide, an equal amount of 2-propylene-1-sulfonic acid sodium salt is used to replace diallyl dimethyl ammonium chloride.

[0077] Example 10

[0078] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 7 in that, in the pretreatment of titanium dioxide, an equal amount of dimethylpropylsulfonamide ethyl methacrylate is used to replace 2-propylene-1-sulfonic acid sodium salt and diallyldimethylammonium chloride.

[0079] Embodiment 11

[0080] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 7 in that, in the pretreatment of titanium dioxide, an equal amount of polyacrylamide is used to replace 2-propylene-1-sulfonic acid sodium salt and diallyldimethylammonium chloride.

[0081] Comparative Example

[0082] Comparative Example 1

[0083] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 1 in that, in step S4, no cationic starch or silane coupling agent is added.

[0084] Comparative Example 2

[0085] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 1 in that, in step S4, an equal amount of cationic starch is used to replace the silane coupling agent.

[0086] Comparative Example 3

[0087] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 1 in that, in step S4, an equal amount of silane coupling agent is used to replace cationic starch.

[0088] Comparative Example 4

[0089] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 1 in that step S2 and step S3 are different.

[0090] Step S2 and step S3 are specifically as follows: plant fiber, waste paper and Chinese medicine residue are added into the stirring tank a and stirred for 20 minutes. Then water and polyacrylamide are added and stirred for 60 minutes. Then the mixture is transferred to a hydraulic pulper and pulped for 50 minutes. Then the mixture is transferred to a disc mill and pulped until the beating degree is 50° SR to obtain a mixed pulp.

[0091] Comparative Example 5

[0092] A method for recycling and reusing traditional Chinese medicine residue resources, which differs from Example 1 in that titanium dioxide is not added in step S4.

[0093] Performance Testing

[0094] The pulp molded packaging products obtained in Examples 1-11 and Comparative Examples 1-5 were respectively taken as samples, and the following performance tests were performed on the samples. The test results are shown in Table 2.

[0095] Among them, the tear index of pulp molded packaging products is tested according to GB / T455-2002 "Determination of tear resistance of paper and paperboard".

[0096] According to GB / T12914-2008 “Determination of tensile strength of paper and paperboard”, the tensile index of pulp molded packaging products is tested.

[0097] According to BBT0045-2007 "Pulp Molded Product Industrial Packaging", when the deformation of the pulp molded packaging product is 25mm, the pressure resistance of the pulp molded packaging product is tested and the pressure resistance index is calculated, and the pressure resistance index = pressure resistance / quantity.

[0098] According to ISO2470-1999 "Determination of the blue light diffuse reflection factor (ISO brightness) of paper, paperboard and pulp", the ISO whiteness of pulp molded packaging products is tested.

[0099] Table 2 Test results

[0100]

[0101] It can be seen from Table 2 that the pulp molded packaging products obtained by the method for recycling and utilizing Chinese medicine residue resources of the present application have a tear index of 21.31-28.17 mN.m 2 / g, tensile index is 52.35-63.11Nm / g, compressive index is 61.92-75.86Nm 2 / g, with the advantages of high tear index, high tensile index and high compressive index. At the same time, the ISO whiteness of pulp molded packaging products is 88.79-89.83%, which has a high whiteness, making pulp molded packaging products show excellent comprehensive performance and meet market demand.

[0102] Example 1 is compared with Comparative Examples 1-3, and Comparative Example 1 is used as the basis. Comparative Example 2 adds cationic starch to the mixed slurry relative to Comparative Example 1; Comparative Example 3 adds silane coupling agent to the mixed slurry relative to Comparative Example 1; Example 1 adds cationic starch and silane coupling agent to the mixed slurry relative to Comparative Example 1. It can be seen that the tear index, tensile index and compressive index of the pulp molded packaging product are significantly enhanced through the synergistic effect between cationic starch and silane coupling agent.

[0103] Comparing Example 1 with Comparative Example 4, it can be seen that pre-immersing the Chinese medicine residue can increase the tear index, tensile index, and compressive index of pulp molding, so that the pulp molded packaging products show excellent comprehensive performance. Combined with Comparative Example 5, it can be seen that adding titanium dioxide in step S4 can significantly improve the mechanical strength and whiteness of pulp molded packaging products and improve the comprehensive performance of pulp molded packaging products. Combined with Examples 7-11, it can be seen that titanium dioxide is pre-treated with diallyldimethylammonium chloride and 2-propylene-1-sulfonic acid sodium salt before use. Compared with before treatment, the tear index increased by 20.1%, the tensile index increased by 13.0%, and the compressive index increased by 13.6%, so that pulp molded packaging products can meet higher requirements.

[0104] By comparing Example 1 with Examples 4-6, it can be seen that with the continuous increase in the beating degree of the mixed slurry, the tear index, tensile index and compressive index all show a trend of first increasing and then decreasing, and when the beating degree is 50-55°SR, the performance of the pulp molded packaging products is better.

[0105] It should be noted that the embodiments described above are only used to explain the present application and do not constitute any limitation to the present application. The present application is described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words, rather than restrictive words. The present application may be modified as specified within the scope of the claims of the present application, and the present invention may be revised without departing from the scope and spirit of the present application. Although the present application described therein relates to specific methods, materials and embodiments, it does not mean that the present application is limited to the specific examples disclosed therein. On the contrary, the present application can be extended to all other methods and applications with the same functions.

Claims

1. A method for recycling and reusing Chinese medicine residue resources, characterized in that: The steps include: S1. Prepare the following raw materials: 2000 parts by weight of water, 20-30 parts by weight of Chinese medicinal residues, 20-30 parts by weight of waste paper, 45-55 parts by weight of plant fiber, 1-3 parts by weight of polyacrylamide, 7-9 parts by weight of titanium dioxide, 4-6 parts by weight of cationic starch, 0.5-1.5 parts by weight of silane coupling agent, and 0.1-0.5 parts by weight of amphoteric surfactant; S2, stirring and mixing the Chinese medicine residue and part of the water, and soaking for 2-4 days to obtain a premix; S3, stirring and mixing the plant fiber and waste paper, then adding the remaining water, premix, and polyacrylamide, stirring and mixing, crushing and beating the pulp, and obtaining a mixed pulp; S4, adding cationic starch, silane coupling agent, and amphoteric surfactant to the mixed slurry, stirring and mixing, and then adding titanium dioxide, stirring and mixing to obtain a mixed material; S5, draining the mixture, forming it, hot pressing it to shape it, and drying it to obtain a pulp molded packaging product; The titanium dioxide is pretreated as follows before use: Sa. Add initiator and chain transfer agent into water, stir and mix to obtain a premixed solution; Sb, add titanium dioxide to water at a temperature of 50-60°C, ultrasonically treat for 20-40 minutes, then add a silane coupling agent, stir for 1-3 hours, then add diallyldimethylammonium chloride and 2-propylene-1-sulfonic acid sodium salt, stir and mix, then add the premixed liquid, stir for 8-12 hours, filter, and dry to obtain the pretreated titanium dioxide; The weight ratio of the titanium dioxide, silane coupling agent, diallyldimethylammonium chloride, 2-propylene-1-sulfonic acid sodium salt, initiator and chain transfer agent is 50:(1-3):(5-15):(2-4):(0.1-0.3):(0.1-0.3).

2. A method for recycling and utilizing Chinese medicine residue resources according to claim 1, characterized in that: The weight ratio of part of the water in step S1 to the remaining water in step S2 is 1:(3-5).

3. A method for recycling and utilizing Chinese medicine residue resources according to claim 1, characterized in that: The moisture content of the Chinese medicine residue is ≤5%, and / or, The Chinese medicine residues are one or more of root Chinese medicine residues, stem Chinese medicine residues, and leaf Chinese medicine residues.

4. A method for recycling and utilizing Chinese medicine residue resources according to claim 1, characterized in that: In step S3, the beating degree of the mixed slurry is 50-55°SR.

5. A method for recycling and utilizing Chinese medicine residue resources according to claim 1, characterized in that: In step S5, the temperature of hot pressing is 85-95°C, the pressure is 0.5-0.7 MPa, and the time is 40-50 seconds.

6. A method for recycling and utilizing Chinese medicine residue resources according to claim 1, characterized in that: The silane coupling agent is one or more of γ-(methacryloyloxy)propyltrimethoxysilane, γ-glycidyloxypropyltrimethoxysilane, 3-aminopropyltriethoxysilane, and / or, The amphoteric surfactant is one or more of 3-sulfopropyltetradecyldimethylammonium, 3-(N,N-dimethylhexadecylamino)propane sulfonate, and 3-(decyldimethylammonium)propane-1-sulfonic acid inner salt.

7. A method for recycling and utilizing Chinese medicine residue resources according to claim 1, characterized in that: The initiator is ammonium persulfate, and / or the chain transfer agent is sodium formate.

8. A pulp molded packaging product, characterized in that: The pulp molded packaging product is obtained by using the method for recycling and utilizing traditional Chinese medicine residue resources as described in any one of claims 1 to 7.

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