Device and method for preparing high-wear-resistance chemical fiber paper tube

Abstract

The invention discloses a device and a method for preparing a high-wear-resistance chemical fiber paper tube, and relates to the technical field of high polymer materials, and the method comprises the following steps: optimizing the raw material formula of the chemical fiber paper tube, adjusting the content of carbon fibers to 8-12%, adjusting the content of aramid fibers to 4-6%, correspondingly reducing the content of common fibers to maintain the stability of the total amount, and preparing the high-wear-resistance chemical fiber paper tube. A modified polyurethane adhesive is selected; the surface of the paper tube is coated by adopting a multi-layer structure, the first layer is a nano ceramic coating with the thickness of 0.8-1.2 microns, the second layer is a high-performance epoxy resin coating with the thickness of 1.5-2.5 microns, and the last layer is a nano metal oxide coating with the thickness of 0.8-1.2 microns; a pulping process is optimized, the pulping pressure is controlled to be 28-32 MPa, the pulping time is set to be 28-32 minutes, and the pulping concentration is kept to be 8%-12%; according to the method, nano titanium dioxide and nano zinc oxide are selected as fillers, the addition amounts of the nano titanium dioxide and the nano zinc oxide are respectively 4-6% and 2-4%, and the fillers are subjected to surface modification and dispersion treatment, so that the high-wear-resistance chemical fiber paper tube is prepared.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and in particular to a device and a method for preparing a highly wear-resistant chemical fiber paper tube. Background Art

[0002] At present, chemical fiber paper tubes, as key components in the field of polymer materials, play a vital role in many industries such as textiles, printing, and packaging. Its wear resistance directly affects the service life and efficiency of the product.

[0003] However, the existing chemical fiber paper tube preparation has the following defects:

[0004] (1) Traditionally, the wear resistance of chemical fiber paper tubes is mainly improved by increasing the density of paper tubes. Although this method improves the wear resistance to a certain extent, it inevitably leads to an increase in the weight of the paper tube and an increase in production costs;

[0005] (2) In order to enhance wear resistance, the industry has also tried to coat the surface of chemical fiber paper tubes. Although the wear resistance can be observed to be improved in the short term, the durability and adhesion problems of the coating layer frequently occur, and the coating is easy to fall off, which reduces the overall wear resistance.

[0006] (3) At the same time, although the practice of adding various fillers to pulp to improve the physical properties of paper is widely adopted, this measure also brings about the problem of increased costs. In addition, different fillers have different effects on paper properties, and the selection process is complicated and requires a high degree of customization. Summary of the invention

[0007] In order to solve some or certain technical problems existing in the prior art, one of the purposes of this application is to provide a device and a method for preparing a highly wear-resistant chemical fiber paper tube;

[0008] In order to solve the above existing technical problems, one of the purposes of this application is achieved by adopting the following technical solution:

[0009] A method for preparing a highly wear-resistant chemical fiber paper tube comprises the following steps:

[0010] The raw material formula of chemical fiber paper tubes was optimized, the carbon fiber content was adjusted to 8%-12%, the aramid fiber content was adjusted to 4%-6%, the ordinary fiber content was reduced accordingly to maintain the total amount stable, and modified polyurethane adhesive was selected;

[0011] The surface of the paper tube is coated with a multi-layer structure, wherein the first layer is a nano-ceramic coating with a thickness of 0.8-1.2 microns, the second layer is a high-performance epoxy resin coating with a thickness of 1.5-2.5 microns, and the last layer is a nano-metal oxide coating with a thickness of 0.8-1.2 microns;

[0012] Optimize the beating process, control the beating pressure at 28-32MPa, set the beating time at 28-32 minutes, and keep the beating concentration at 8%-12%;

[0013] Nano titanium dioxide and nano zinc oxide are selected as fillers, and the addition amounts thereof are 4%-6% and 2%-4% respectively. The fillers are surface modified and dispersed to prepare highly wear-resistant chemical fiber paper tubes.

[0014] Preferably, the carbon fiber has a length of 3-5 mm, a diameter of 5-8 μm, and a tensile strength of not less than 3000 MPa; the aramid fiber has a length of 2-4 mm, a diameter of 6-10 μm, and a tensile strength of not less than 2500 MPa;

[0015] In the raw material mixing stage, a combination of mechanical stirring and air flow dispersion is used to evenly disperse the carbon fiber and aramid fiber in the raw material. The stirring speed is 300-500r / min, the air flow speed is 1-3m / s, and the stirring time is 20-40 minutes.

[0016] Preferably, the preparation method of the modified polyurethane adhesive is as follows: a polyurethane prepolymer and an isocyanate crosslinking agent are mixed in a mass ratio of 5:1-7:1, 2%-4% of the total mass of nano calcium carbonate is added as a reinforcing agent, the mixture is reacted at 60-80°C for 2-4 hours, stirring continuously during the reaction at a stirring speed of 200-400 r / min, the temperature is lowered to 40-50°C after the reaction is completed, a silane coupling agent is added at a mass ratio of 1%-3% of the total mass for modification, and stirring is continued for 30-60 minutes to obtain a modified polyurethane adhesive.

[0017] Preferably, the main component of the nano ceramic coating is nano silicon nitride, and its particle size is 20-50nm;

[0018] Before applying the nano-ceramic coating, the surface of the paper tube needs to be treated with plasma, with a treatment power of 100-200W and a treatment time of 5-10 minutes;

[0019] The coating is carried out by spraying, the spraying pressure is 0.3-0.5MPa, the distance between the spray gun and the surface of the paper tube is 15-25cm, and the spraying rate is 5-10g / min.

[0020] Preferably, the epoxy value of the high-performance epoxy resin coating is 0.4-0.6 mol / 100g;

[0021] When applying the high-performance epoxy resin coating, first mix the epoxy resin and the curing agent in a mass ratio of 4:1-6:1, add 0.5%-1.5% of the leveling agent and 0.3%-0.8% of the defoaming agent accounting for the mass of the epoxy resin, stir for 10-20 minutes, and then use the dip coating method for coating. The dipping time is 3-5 seconds and the pulling speed is 5-10cm / s. After coating, cure at 80-100°C for 1-2 hours.

[0022] Preferably, the main component of the nano metal oxide coating is nano zirconium oxide, and its particle size is 30-60nm;

[0023] When coating the nano metal oxide coating, a spin coating method is used, the spin coating speed is 1000-1500r / min, the spin coating time is 30-60 seconds, and after coating, a heat treatment is performed at 120-150°C for 1-2 hours, and the heating rate is 2-4°C / min.

[0024] Preferably, the beating device is a double-disc refiner. During the beating process, the clearance between the grinding discs is controlled to be 0.3-0.5 mm, and the beating degree is monitored in real time through an online monitoring system. When the beating degree reaches 20-40°SR, the beating is automatically stopped.

[0025] The average length of the fibers after pulping is 1-2 mm, and the fiber thickness is 10-20 μm.

[0026] Preferably, the surface modification method of the nano titanium dioxide and nano zinc oxide fillers is:

[0027] Mix nano titanium dioxide and nano zinc oxide with stearic acid in a mass ratio of 10:1-15:1, stir and react at 80-100°C for 1-3 hours at a stirring speed of 200-400r / min, cool to room temperature after the reaction, wash with anhydrous ethanol 2-3 times, and dry for later use;

[0028] When adding fillers, ultrasonic dispersion and mechanical stirring are used in synergy, with an ultrasonic power of 300-500W, a stirring speed of 400-600r / min, and a dispersion time of 30-60 minutes.

[0029] Preferably, the density of the prepared chemical fiber paper tube is 0.9-1.1 g / cm 3 The wear resistance of the paper tube is improved by 50%-80% compared with the chemical fiber paper tube not prepared by the method;

[0030] Through the Taber wear test, under a load of 1000g, the wear amount does not exceed 0.05g;

[0031] The bending strength test is carried out in accordance with national standards, and the bending strength is not less than 80MPa; the compressive strength test is carried out in accordance with industry standards, and the compressive strength is not less than 120MPa.

[0032] The second purpose of this application is achieved by the following technical solution:

[0033] A device for preparing a highly wear-resistant chemical fiber paper tube, used to implement a method for preparing a highly wear-resistant chemical fiber paper tube, comprising: a fiber mixing module, a coating module, a pulping module and a filler adding module;

[0034] The fiber mixing module uses a twin-screw extruder with a screw speed of 200-300 rpm and a mixing temperature of 80-100°C;

[0035] The coating module includes three layers of independent spray units, each layer of the spray unit has a nozzle diameter of 0.5-1.0 mm and a spray rate of 5-10 mL / min;

[0036] The blade drive motor of the beating module has a power of 5-10 kW and is equipped with a real-time pressure sensor to monitor the beating pressure fluctuation.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) Through the multidisciplinary integration of polymer materials, surface treatment technology and paper manufacturing, a new method for improving the wear resistance of chemical fiber paper tubes is proposed. This method can not only improve the wear resistance of chemical fiber paper tubes, but also avoid negative impact on other physical properties of chemical fiber paper tubes, thus solving the main problems faced by the existing technology.

[0039] (2) By optimizing the density of chemical fiber paper tubes, coating the surface of chemical fiber paper tubes, adopting pulping technology and adding fillers, the wear resistance of chemical fiber paper tubes can be improved, and the weight and cost of chemical fiber paper tubes can be increased, the durability and adhesion problems of the coating layer, the impact of the pulping process on other physical properties of paper, and the increase in the production cost of paper due to the addition of fillers can be avoided.

[0040] (3) Through experimental verification, it was found that when the density of chemical fiber paper tube is 0.8-1.2g / cm 3 When the thickness of the coating layer is 0.1-0.5mm, the beating degree is 20-40°SR, and the amount of filler added is 5-20%, the wear resistance of the chemical fiber paper tube is the best. This method provides a scientific basis for improving the wear resistance of chemical fiber paper tubes and has high practical value.

[0041] (4) The method for improving the wear resistance of chemical fiber paper tubes proposed in the present invention can be applied not only to newly produced chemical fiber paper tubes, but also to existing chemical fiber paper tubes, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0043] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0044] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0045] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0046] Figure 1 As shown, a method for preparing a highly wear-resistant chemical fiber paper tube comprises the following steps:

[0047] Optimize the raw material formula of chemical fiber paper tube;

[0048] Apply coating treatment to the surface of the paper tube;

[0049] Optimize the pulping process;

[0050] Fillers are selected and surface modified and dispersed to prepare highly wear-resistant chemical fiber paper tubes.

[0051] Embodiment 1:

[0052] 1. In-depth optimization of raw material formula

[0053] Adjustment of fiber composition: In the raw material system of chemical fiber paper tubes, the reasonable addition of carbon fiber and aramid fiber is the key to improving wear resistance. Carbon fiber with a length of 3-5mm, a diameter of 5-8μm and a tensile strength of not less than 3000MPa is selected, and its content is accurately adjusted to 8%-12%. At the same time, aramid fiber with a length of 2-4mm, a diameter of 6-10μm and a tensile strength of not less than 2500MPa is used, and the content is controlled at 4%-6%. By increasing the proportion of these two high-strength fibers, the overall strength and wear resistance of the paper tube are effectively enhanced. In order to maintain the stability of the total amount of raw materials, the proportion of ordinary fibers is reduced accordingly. In the raw material mixing stage, a combination of mechanical stirring and air flow dispersion is used to ensure uniform distribution of fibers. The mechanical stirring speed is set at 300-500r / min, the air flow speed is 1-3m / s, and the stirring time lasts for 20-40 minutes, so that the carbon fiber and aramid fiber are fully dispersed in the raw materials to avoid agglomeration, thereby ensuring the consistency and stability of the paper tube performance.

[0054] Selection and modification of adhesives: Modified polyurethane adhesives play a vital bonding role in the paper tube forming process. The preparation method is as follows: Mix the polyurethane prepolymer and the isocyanate crosslinker in a mass ratio of 5:1-7:1, and add 2%-4% of the total mass of nano calcium carbonate as a reinforcing agent. React for 2-4 hours at a temperature of 60-80°C, and keep the stirring speed at 200-400r / min during the reaction to ensure uniform reaction. After the reaction is completed, cool to 40-50°C, add 1%-3% of the total mass of silane coupling agent for modification, and continue stirring for 30-60 minutes. The modified polyurethane adhesive not only has excellent bonding properties, but also can form a good synergistic effect with fibers and other additives, further improving the comprehensive performance of the paper tube, and enhancing the structural stability and wear resistance of the paper tube.

[0055] 2. Fine process of surface coating

[0056] Nano-ceramic coating: Nano-ceramic coating is the first layer of protection for paper tubes. The main component is nano-silicon nitride with a particle size of 20-50nm. Before coating, the surface of the paper tube needs to be treated with plasma at a power of 100-200W for 5-10 minutes to clean the surface of the paper tube and enhance the adhesion of the coating. Spraying is used for coating. The spraying pressure is controlled at 0.3-0.5MPa. The distance between the spray gun and the surface of the paper tube is maintained at 15-25cm. The spraying rate is 5-10g / min to ensure that the coating thickness is uniform and stable at 0.8-1.2 microns. This nano-ceramic coating can effectively improve the hardness and wear resistance of the paper tube surface, resist external friction and wear, and provide basic protection for the paper tube.

[0057] High-performance epoxy resin coating: The epoxy value of high-performance epoxy resin coating is 0.4-0.6mol / 100g. When coating, first mix the epoxy resin and curing agent in a mass ratio of 4:1-6:1, then add 0.5%-1.5% of the leveling agent and 0.3%-0.8% of the defoaming agent accounting for the mass of the epoxy resin, stir for 10-20 minutes and then use the dip coating method for coating. The dipping time is controlled at 3-5 seconds, the pulling speed is 5-10cm / s, and after coating, it is cured at 80-100℃ for 1-2 hours to make the coating thickness reach 1.5-2.5 microns. While providing good wear resistance, this coating can also enhance the flexibility and chemical corrosion resistance of the paper tube, and synergize with the nano-ceramic coating to further improve the protective performance of the paper tube.

[0058] Nano metal oxide coating: Nano metal oxide coating is mainly composed of nano zirconium oxide with a particle size of 30-60nm. Spin coating is performed with a spin coating speed of 1000-1500r / min and a spin coating time of 30-60 seconds. After coating, heat treatment is performed at 120-150℃ with a heating rate of 2-4℃ / min for 1-2 hours to ensure that the coating thickness is 0.8-1.2 microns. This coating can effectively fill the microscopic pores on the surface of the paper tube, further improve the surface finish and wear resistance of the paper tube, and at the same time enhance the anti-oxidation performance of the paper tube and extend the service life of the paper tube.

[0059] 3. Precise optimization of pulping process

[0060] A double-disc refiner is used in the pulping process, which is a key equipment to ensure the quality of the fiber. The pulping pressure is strictly controlled at 28-32MPa, the pulping time is set to 28-32 minutes, and the pulping concentration is maintained at 8%-12%. During the pulping process, the grinding disc gap is precisely adjusted to 0.3-0.5mm, and the beating degree is monitored in real time through an advanced online monitoring system. When the beating degree reaches 20-40°SR, the system automatically stops beating to ensure the consistency and stability of the beating effect. After this optimized pulping process, the average fiber length is 1-2mm and the fiber thickness is 10-20μm, which gives the fiber good interweaving performance and strength, provides a solid structural foundation for the paper tube, and significantly improves the mechanical properties and wear resistance of the paper tube.

[0061] 4. Scientific selection and processing of fillers

[0062] Filler selection: Nano titanium dioxide and nano zinc oxide are selected as fillers due to their unique physical and chemical properties. Nano titanium dioxide has good photocatalytic activity and chemical stability, while nano zinc oxide has excellent performance in antibacterial and wear resistance. The reasonable addition of the two can further improve the performance of paper tubes.

[0063] Surface modification and dispersion: The surface modification method of nano titanium dioxide and nano zinc oxide is as follows: mix them with stearic acid at a mass ratio of 10:1-15:1, stir and react at 80-100°C for 1-3 hours, and the stirring speed is 200-400r / min. After the reaction is completed, cool to room temperature, wash with anhydrous ethanol 2-3 times, and set aside after drying. When adding fillers, ultrasonic dispersion and mechanical stirring are used in synergy, with an ultrasonic power of 300-500W, a stirring speed of 400-600r / min, and a dispersion time of 30-60 minutes. Through surface modification and efficient dispersion, the filler is evenly dispersed in the paper tube raw material, giving full play to its enhancement, wear resistance and other properties, avoiding performance defects caused by agglomeration, and effectively improving the comprehensive performance of the paper tube.

[0064] 5. Quality inspection system and performance advantages

[0065] Quality inspection standards: The prepared chemical fiber paper tubes must undergo strict quality inspection. Appearance inspection requires that the paper tube surface is smooth, the coating is uniform, and there are no obvious flaws and bubbles. Density inspection must meet 0.9-1.1g / cm 3 The wear resistance is tested by Taber abrasion test. Under a load of 1000g, the wear amount shall not exceed 0.05g. The bending strength test is carried out according to national standards, and the bending strength shall not be less than 80MPa; the compressive strength test is carried out according to industry standards, and the compressive strength shall not be less than 120MPa, to ensure that the paper tube can withstand various external forces in actual applications and meet the use requirements of different scenarios.

[0066] Performance improvement effect: The wear resistance of the chemical fiber paper tube prepared by this process is significantly improved by 50%-80% compared with the chemical fiber paper tube not prepared by this method. In terms of strength, both the bending strength and the compressive strength have reached a high level, which effectively solves the problems of poor wear resistance and insufficient strength of traditional chemical fiber paper tubes. It can be widely used in fields with strict requirements on paper tube performance, such as high-end textiles, electronic equipment packaging, etc., providing strong support for the development of related industries.

[0067] 6. Supporting design of preparation equipment

[0068] Fiber mixing module: A twin-screw extruder is used as the core equipment for fiber mixing, the screw speed is set at 200-300rpm, and the mixing temperature is controlled at 80-100℃. This equipment can provide stable shear force and mixing effect, ensuring that carbon fiber, aramid fiber and other raw materials are fully mixed and evenly mixed, laying a good foundation for subsequent molding process.

[0069] Coating module: The coating module consists of three layers of independent spraying units. The nozzle diameter of each spraying unit is 0.5-1.0mm, and the spraying rate is 5-10mL / min. This design can accurately control the spraying amount and thickness of each coating, ensure the stability and consistency of the coating process, and achieve high-quality coating of multiple layers.

[0070] Beating module: The blade drive motor of the beating module has a power of 5-10kW and is equipped with a high-precision real-time pressure sensor. The sensor can monitor the beating pressure fluctuation in real time to ensure that the beating pressure is always within the set range, effectively guaranteeing the stability and reliability of the beating effect, and providing key technical support for the production of high-quality chemical fiber paper tubes.

[0071] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A method for preparing a highly wear-resistant chemical fiber paper tube, characterized in that: The following steps are involved: The raw material formula of chemical fiber paper tubes was optimized, the carbon fiber content was adjusted to 8%-12%, the aramid fiber content was adjusted to 4%-6%, the ordinary fiber content was reduced accordingly to maintain the total amount stable, and modified polyurethane adhesive was selected; The surface of the paper tube is coated with a multi-layer structure, wherein the first layer is a nano-ceramic coating with a thickness of 0.8-1.2 microns, the second layer is a high-performance epoxy resin coating with a thickness of 1.5-2.5 microns, and the last layer is a nano-metal oxide coating with a thickness of 0.8-1.2 microns; Optimize the beating process, control the beating pressure at 28-32MPa, set the beating time at 28-32 minutes, and keep the beating concentration at 8%-12%; Nano titanium dioxide and nano zinc oxide are selected as fillers, and the addition amounts thereof are 4%-6% and 2%-4% respectively. The fillers are surface modified and dispersed to prepare highly wear-resistant chemical fiber paper tubes.

2. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The length of the carbon fiber is 3-5 mm, the diameter is 5-8 μm, and the tensile strength is not less than 3000 MPa; the length of the aramid fiber is 2-4 mm, the diameter is 6-10 μm, and the tensile strength is not less than 2500 MPa; In the raw material mixing stage, a combination of mechanical stirring and air flow dispersion is used to evenly disperse the carbon fiber and aramid fiber in the raw material. The stirring speed is 300-500r / min, the air flow speed is 1-3m / s, and the stirring time is 20-40 minutes.

3. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The preparation method of the modified polyurethane adhesive comprises the following steps: mixing a polyurethane prepolymer and an isocyanate crosslinking agent at a mass ratio of 5:1-7:1, adding 2%-4% of the total mass of nano calcium carbonate as a reinforcing agent, reacting at 60-80°C for 2-4 hours, continuously stirring during the reaction at a stirring speed of 200-400 r / min, cooling to 40-50°C after the reaction, adding 1%-3% of the total mass of a silane coupling agent for modification, and continuing stirring for 30-60 minutes to obtain the modified polyurethane adhesive.

4. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The main component of the nano ceramic coating is nano silicon nitride, and its particle size is 20-50nm; Before applying the nano-ceramic coating, the surface of the paper tube needs to be treated with plasma, with a treatment power of 100-200W and a treatment time of 5-10 minutes; The coating is carried out by spraying, the spraying pressure is 0.3-0.5MPa, the distance between the spray gun and the surface of the paper tube is 15-25cm, and the spraying rate is 5-10g / min.

5. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The epoxy value of the high-performance epoxy resin coating is 0.4-0.6 mol / 100g; When applying the high-performance epoxy resin coating, first mix the epoxy resin and the curing agent in a mass ratio of 4:1-6:1, add 0.5%-1.5% of the leveling agent and 0.3%-0.8% of the defoaming agent accounting for the mass of the epoxy resin, stir for 10-20 minutes, and then use the dip coating method for coating. The dipping time is 3-5 seconds and the pulling speed is 5-10cm / s. After coating, cure at 80-100°C for 1-2 hours.

6. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The main component of the nano metal oxide coating is nano zirconium oxide, and its particle size is 30-60nm; When coating the nano metal oxide coating, a spin coating method is used, the spin coating speed is 1000-1500r / min, the spin coating time is 30-60 seconds, and after coating, a heat treatment is performed at 120-150°C for 1-2 hours, and the heating rate is 2-4°C / min.

7. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The beating equipment is a double-disc refiner. During the beating process, the clearance between the grinding discs is controlled to be 0.3-0.5 mm. The beating degree is monitored in real time through an online monitoring system. When the beating degree reaches 20-40°SR, the beating is automatically stopped. The average length of the fibers after pulping is 1-2 mm, and the fiber thickness is 10-20 μm.

8. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The surface modification method of the nano titanium dioxide and nano zinc oxide fillers is: Mix nano titanium dioxide and nano zinc oxide with stearic acid in a mass ratio of 10:1-15:1, stir and react at 80-100°C for 1-3 hours at a stirring speed of 200-400r / min, cool to room temperature after the reaction, wash with anhydrous ethanol 2-3 times, and dry for later use; When adding fillers, ultrasonic dispersion and mechanical stirring are used in synergy, with an ultrasonic power of 300-500W, a stirring speed of 400-600r / min, and a dispersion time of 30-60 minutes.

9. The method for preparing a highly wear-resistant chemical fiber paper tube according to claim 1, characterized in that: The density of the prepared chemical fiber paper tube is 0.9-1.1g / cm 3 The wear resistance of the paper tube is improved by 50%-80% compared with the chemical fiber paper tube not prepared by the method; Through the Taber wear test, under a load of 1000g, the wear amount does not exceed 0.05g; The bending strength test is carried out in accordance with national standards, and the bending strength is not less than 80MPa; the compressive strength test is carried out in accordance with industry standards, and the compressive strength is not less than 120MPa.

10. A device for preparing highly wear-resistant chemical fiber paper tubes, characterized in that: A method for preparing a highly wear-resistant chemical fiber paper tube according to any one of claims 1 to 9, comprising: a fiber mixing module, a coating module, a pulping module and a filler adding module; The fiber mixing module uses a twin-screw extruder with a screw speed of 200-300 rpm and a mixing temperature of 80-100°C; The coating module includes three layers of independent spray units, each layer of the spray unit has a nozzle diameter of 0.5-1.0 mm and a spray rate of 5-10 mL / min; The blade drive motor of the beating module has a power of 5-10 kW and is equipped with a real-time pressure sensor to monitor the beating pressure fluctuation.

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