A device and method for sequence pulse cold solid state performance strengthening

Abstract

The application discloses a kind of sequence pulse cold solid performance strengthening equipment and method.The equipment includes the unwinding roller module, multistage multi-roller sequence pulse calendering module and winding roller module of setting, the unwinding roller module is used to unwind polymer material;The multistage multi-roller sequence pulse calendering module includes at least one multi-roller device, and each level of the multi-roller device includes calendering frame, rotatingly arranged on the calendering frame calendering roller and at least one driven roller in contact with the calendering roller, and the multi-roller device is used to calender high polymer material at high pressure, when multistage multi-roller device is arranged, multistage multi-roller device can make high polymer material continuously receive double-roller calendering effect, to realize sequence pulse calendering process;The winding roller module is used to wind the polymer material after calendering.The application has the advantages of obvious effect, simple method, processing is convenient, condition is controllable, and is easy to promote.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of processing and self-reinforcing technology of high polymer materials, and in particular to a device and method for sequence pulse cold solid performance strengthening. BACKGROUND

[0002] High polymer materials are widely used in different fields, such as food, medicine, chemical industry, etc., and have brought great convenience to people's life. At present, the market share of high polymer material products is increasing year by year, and with the development of economy and the adjustment of rural industrial structure, the market demand for high-performance high polymer materials in various industries in China is rising.

[0003] However, the large amount of waste of high polymer materials and "white pollution" are the main problems caused by them. This is because the demand for high polymer materials is large, and under the operation of the market, the high polymer materials used on the market often prioritize cheapness, and are prone to breakage or tearing due to vibration, collision, extrusion, etc. during use, so they need to be replaced frequently, causing resource waste; at the same time, these broken high polymer materials are difficult to collect and recycle, causing a lot of environmental pollution. On the other hand, if chemical means and additives are used to modify and strengthen plastics, new chemical pollution may be caused, and the production cost is difficult to control, which is not worth the cost.

[0004] The invention application with publication number CN112574445A discloses a preparation method of a self-reinforced polyimide film. Polyimide solid powder is added to a polyamide acid PAA solution, then the temperature is raised at a rate of 5℃ / min to 300℃ for reaction for 30min, and then the self-reinforced polyimide film is prepared by inducing polymer crystallization and then natural cooling. This method is a solution film forming method, and chemical polyamide acid is introduced, which has high production cost and is difficult to be industrialized for mass production, and is difficult to be popularized in industry.

[0005] The invention application with publication number CN106739387A discloses a method for continuously preparing polypropylene self-reinforced composite material by using double steel belt press. The finished polypropylene film is stacked into a "sandwich" structure with high melting point polypropylene fibers or fiber fabrics cooled to 10-20℃ or room temperature, and then the double steel belt press is used to realize continuous production to obtain polypropylene self-reinforced composite material with controllable thickness. However, this method needs three different state products for compounding processing, and introduces additional polypropylene fibers to increase the production cost, and the means is relatively complex; in addition, it has special requirements for the melting point of polypropylene raw materials, and has poor adaptability to different materials. This method is difficult to be applied to other plastic raw materials such as polyethylene which is the most commonly used, and is difficult to be popularized in industry.

[0006] It can be seen that although there have been many studies on the preparation of high-performance polymer materials, and there have been great breakthroughs, a large number of technologies are only suitable for small-batch production in the laboratory, and have low production efficiency and harsh production environment. Therefore, it is urgent to propose an efficient and convenient method for preparing high-performance polymer materials. SUMMARY

[0007] In order to at least solve one of the deficiencies existing in the prior art, the present application provides a sequence pulse cold solid state performance strengthening device and method, which realizes the continuous processing self-reinforcement of polymer materials by using pure physical means, so as to improve the defects of insufficient performance and quality of polymer materials under traditional processing at the same cost.

[0008] In order to achieve the purpose of the present application, the present application provides a sequence pulse cold solid state performance strengthening device, which comprises a pay-off roll module, a multi-stage multi-roller sequence pulse calendering module and a winding roll module,

[0009] The pay-off roll module is used for paying off the polymer material.

[0010] The multi-stage multi-roller sequence pulse calendering module comprises at least one multi-roller device, each stage of the multi-roller device comprises a calendering frame, a calendering roller rotatably arranged on the calendering frame and at least one driven roller in contact with the calendering roller, and the multi-roller device is used for high-pressure calendering of the polymer material. When multiple multi-roller devices are provided, the multiple multi-roller devices can continuously subject the polymer material to double-roller calendering to realize sequence pulse calendering process.

[0011] The winding roll module is used for winding the calendered polymer material.

[0012] The equipment mainly comprises a pay-off roll, a calendering roller and a winding roll, forming a set of polymer material self-reinforcement production line capable of continuous processing. By using simple winding and unwinding modules and calendering modules, the continuous processing self-reinforcement of the polymer material at room temperature is easily realized by the action of the simple calendering roller. The method is simple, effective, convenient, green and environmentally friendly, does not introduce any other raw materials, and is easy to promote.

[0013] Further improvement of the present application, the pay-off roll module comprises a pay-off frame and a pay-off roll rotatably arranged on the pay-off frame.

[0014] Further improvement of the present application, the winding roll module comprises a winding frame and a winding roll rotatably arranged on the winding frame.

[0015] Further improvement of the present application, each stage of the multi-roller device further comprises a tensioning roller, and the tensioning roller is used for tightening the polymer material.

[0016] Further improvement of the application, the surface of the tension roller is provided with a spiral groove, which can make the shrunk high polymer material flatten along the spiral direction.

[0017] Further improvement of the application, the size of the calender roller is larger than the driven roller.

[0018] Further improvement of the application, the number of the driven rollers is changed to control the number of sequence pulse.

[0019] Further improvement of the application, the distance between the calender roller and the driven roller is changed to adjust the sequence pulse pressure.

[0020] Further improvement of the application, the rotating speed of the calender roller is changed to adjust the frequency of the sequence pulse pressure.

[0021] The application also provides a sequence pulse cold solid state performance strengthening method, which uses the above-mentioned equipment, and the high polymer material is initially placed on the unwinding roller module, and then is rewound at the winding roller module after the high-pressure calendering of the calender roller of the multi-stage multi-roller sequence pulse calendering module.

[0022] The application provides a sequence pulse cold solid state performance strengthening method, which places the high polymer material on the unwinding roller, and then rewinds the high polymer material at the winding roller after the sequence high-pressure calendering of the calender roller, and the whole process does not need heating and any other raw materials.

[0023] The application provides a sequence pulse cold solid state performance strengthening method, which uses the instantaneous high pressure of the calender roller and the driven roller to induce the change of the condensed state structure such as crystal lattice orientation and grain size, realizes the on-demand regulation of the microstructure, and thus can complete the customized production of the high polymer material performance.

[0024] The application provides a sequence pulse cold solid state performance strengthening method and equipment, which improves the defects of the high polymer material produced by the traditional process, such as easy breakage, easy tearing, high cost, and difficult recycling.

[0025] 1. The equipment structure is simple and easy to promote. Traditional high polymer material self-reinforcement methods, such as single-drawing and double-drawing processes, need large equipment support, occupy a large space, and have high energy consumption and maintenance cost. The application only needs a set of roller pressing equipment, does not need heating, has low equipment cost, small space occupation, and low energy consumption, and is easy to promote.

[0026] 2. No need for additional raw materials, green and environmentally friendly. At present, the reinforcing means of high polymer materials on the market mainly changes the formula and uses additives. The exploration of the formula needs to consume a lot of manpower and material resources, and the research and development cost is large. Not only the production cost of the product is increased, but also the environmental pollution is caused. The present application relies on pure physical means, does not need additional raw materials, and does not produce any pollution, and almost does not increase the production cost.

[0027] 3. The method is simple and convenient, and the effect is obvious. The present application realizes the continuous processing and self-reinforcing effect of high polymer materials by a set of continuous rolling equipment. The equipment is easy to obtain, the means is simple, and the self-reinforcing effect is obvious. The average of various mechanical properties including tensile strength, yield strength and elongation at break can be increased by more than 30%, and the highest can be increased by more than 50%. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a modular multi-stage multi-roll sequence pulse calendering self-reinforcing processing production line schematic diagram (embodiment 1) in the embodiment of the present application.

[0029] Figure 2 It is a line continuous calendering self-reinforcing blown film production line schematic diagram (embodiment 2) in the embodiment of the present application.

[0030] Figure 3 It is a device structure schematic diagram based on sequence pulse cold solid state performance strengthening in the embodiment of the present application.

[0031] In the figure, the unwinding mold frame 1, the unwinding roller 2, the calendering mold frame 3, the calendering roller 4, the first driven roller 5, the second driven roller 6, the tensioning roller 7, the winding mold frame 8, the winding roller 9, and the high polymer material 10. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme in the embodiment of the present application will be described clearly and completely in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all the embodiments. Based on the embodiment in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0033] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and are not intended to particularly indicate the order or sequence, nor to limit the present application, which are merely for distinguishing the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0034] Embodiment 1

[0035] The present application provides a sequence pulse cold solid performance strengthening device, which can be expanded into a modular multi-stage multi-roller pulse calendering processing self-reinforcing processing production line, such as Figure 1 The overall set of devices can be divided into three modules, the beginning end is a unwinding roller module, the middle is a multi-stage multi-roller sequence pulse calendering module, and the end is a winding roller module.

[0036] As shown in Figure 1 The unwinding roller module mainly includes a unwinding frame 1 and a unwinding roller 2 rotatably arranged on the unwinding frame 1; the multi-stage multi-roller sequence pulse calendering module includes at least one multi-roller device, each multi-roller device mainly includes a calendering frame 3, a calendering roller 4, a plurality of driven rollers and a tensioning roller 7, the calendering roller 4 is rotatably arranged on the calendering frame 3, a plurality of the driven rollers are respectively in contact with different positions of the calendering roller 4, and a tensioning roller 7 is arranged between adjacent two driven rollers; the winding roller module mainly includes a winding frame 8 and a winding roller 9 rotatably arranged on the winding frame 8, and the finished polymer material 10 is wound on the unwinding roller 2, the driven roller and the winding roller 9 in sequence.

[0037] Among them, the size of the calendering roller 4 is larger than that of the driven roller.

[0038] In this embodiment, two driven rollers are arranged in the multi-roller device, including a first driven roller 5 and a second driven roller 6.

[0039] As shown in Figure 1 The finished polymer material 10 is initially wound on the unwinding roller 2, and under the driving of the winding roller 9, the polymer material 10 is continuously wound on the winding roller 9 after passing through the calendering roller 4 to complete the self-reinforcing processing and winding of the polymer material.

[0040] As shown in Figure 1As shown, in the multi-stage multi-roll sequential pulse calendering module, several driven rollers (5, 6) are arranged around the calendering roller 4 on the die frame of each multi-roll device, and are in close contact with the calendering roller 4. An overhead tension roller 7 is set between every two driven rollers (5, 6) to tighten the polymer material, and a spiral groove is opened on the cylindrical surface of the tension roller 7 so that the shrinking polymer material can be flattened along the spiral direction. The number of driven rollers on each calendering die frame 3 can be set multiple as needed, or multiple sets of identical multi-roll devices can be set to form a multi-stage structure to meet the complex processing requirements that the polymer material 10 may require.

[0041] like Figure 1 As shown, when the polymer material 10 passes through the multi-roller device, it will be continuously subjected to the calendering action of the calendering roller 4 and the driven roller at a certain frequency to realize the sequential pulse calendering process. The frequency of the sequential pulse can be controlled by the distance between two adjacent driven rollers (5, 6). The pressure of the pulse high pressure on the polymer material 10 can be adjusted by the size of the gap between the calendering roller 4 and the driven rollers (5, 6).

[0042] like Figure 1 As shown, when the polymer material 10 passes through different multi-roller devices, different pulse pressures, pulse frequencies, pulse counts, etc., can be set for different multi-roller devices to meet the complex processing requirements that the polymer material 10 may require.

[0043] Example 2

[0044] This embodiment provides a method for enhancing the properties of sequential pulse cold solid-state materials. Based on the device for enhancing the properties of sequential pulse cold solid-state materials provided in Embodiment 1, the polymer material is initially placed on the unwinding roller module, and after being subjected to high-pressure calendering by the calendering rollers of the multi-stage multi-roll sequential pulse calendering module, it is rewound at the winding roller module.

[0045] The method in this embodiment utilizes the instantaneous high pressure of the calendering roll and the driven roll to induce changes in the condensed state structure such as lattice orientation and grain size, thereby achieving on-demand control of the microstructure. The entire process can achieve self-reinforcement of polymer materials without heating or adding any other raw materials.

[0046] Example 3

[0047] This invention provides a device for enhancing the properties of sequential pulsed cold solid-state materials, which can be expanded into an online continuous calendering self-reinforcing blown film production line, such as... Figure 2 As shown, the production line can be divided into two areas: the front end is the blown film area, and the rear end is the post-processing area.

[0048] like Figure 2As shown, the film blowing zone mainly includes an extruder, a film blowing die, a film blowing die carrier and multiple transition rollers (equivalent to the unwinding rollers in the foregoing embodiments); the post-processing zone mainly includes a calender die carrier 3, a calender roller 4, a first driven roller 5 (the number of driven rollers can be set to more than one), a winding die carrier 8 and a winding roller 9.

[0049] As shown in FIG. 1, the film blowing process is different from the traditional film blowing process. The film product produced by the film blowing zone needs to be first sent to the calender double-roller device of the post-processing zone to complete calendering, and then be wound to realize the online continuous calendering self-reinforcing effect of the film in the film blowing process. Figure 2

[0050] As shown in FIG. 2, the online continuous calendering production line can be combined with the multi-stage multi-roller sequence pulse calendering module in Embodiment 1 to meet the needs of various different processing technologies and self-reinforcing properties of high polymer materials. Figure 2

[0051] Embodiment 4

[0052] The film blowing formed LDPE film is cold-pressed by the sequence pulse cold solid state performance strengthening equipment and method provided in the foregoing embodiments, and the obtained performance is compared with that of the directly film blowing formed LDPE film. The performance comparison is shown in Table 1 below. As can be seen from Table 1, the performance of the film prepared by the sequence pulse cold solid state performance strengthening equipment of the present application is better than that of the directly film blowing formed LDPE film.

[0053] Table 1

[0054]

[0055] The sequence pulse cold solid state performance strengthening equipment and method provided in the foregoing embodiments of the present application can easily realize the continuous processing self-reinforcing effect of high polymer material plates, sheets and films by using simple winding and unwinding modules and double-roller calendering modules. The self-reinforcing of high polymer materials can be realized at room temperature, and the green low-carbon manufacturing of high-performance high polymer materials can be realized without adding other fillers. The sequence pulse pressure, frequency and number of times can be adjusted by adjusting the roller gap, rotating speed and number of calender rollers, so as to realize the on-demand regulation of the condensed state structure of high polymer materials, thereby realizing the quantitative preparation of high polymer materials with different properties.

[0056] ​​The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for sequence pulsed cold solid state performance strengthening, characterized in that, The device comprises a pay-off roller module, a multi-stage multi-roller sequential pulse calendering module and a winding roller module, The pay-off roller module is used for paying off the high polymer material. The multi-stage multi-roller sequential pulse calendering module comprises at least one multi-roller device, each multi-roller device comprises a calendering frame, a calendering roller rotatably arranged on the calendering frame and at least one driven roller in contact with the calendering roller, the multi-roller device is used for high-pressure calendering the high polymer material, when the multi-stage multi-roller device is arranged, the multi-stage multi-roller device can continuously subject the high polymer material to double-roller calendering to realize the sequential pulse calendering process. The winding roller module is used for winding the calendered high polymer material.

2. A sequential pulsed cold solid-state performance enhancement apparatus as claimed in claim 1, wherein, The pay-off roller module comprises a pay-off frame and a pay-off roller rotatably arranged on the pay-off frame.

3. A device for sequential pulse cold solid state performance strengthening according to claim 1, characterized in that, The winding roller module comprises a winding frame and a winding roller rotatably arranged on the winding frame.

4. A sequential pulsed cold solid-state performance enhancement apparatus as claimed in claim 1, wherein, Each multi-roller device further comprises a tensioning roller for tightening the high polymer material.

5. A device for sequence-pulse cold solid-state performance strengthening according to claim 4, characterized in that, The surface of the tensioning roller is provided with a helical groove for flattening the shrunk high polymer material along the helical direction.

6. A sequential pulsed cold solid-state performance enhancement apparatus as claimed in claim 1, wherein, The size of the calendering roller is larger than that of the driven roller.

7. A sequential pulsed cold solid-state performance enhancement apparatus as claimed in claim 1, wherein, The number of the driven rollers is changed to control the number of the sequential pulses.

8. The apparatus for sequential pulse cold solid state performance strengthening according to claim 1, wherein, The roll gap between the calendering roller and the driven roller is changed to adjust the sequential pulse pressure.

9. The apparatus for sequence-pulse cold solid performance strengthening according to any one of claims 1-8, characterized in that, The rotation speed of the calendering roller is changed to adjust the application frequency of the sequential pulse pressure.

10. A method of sequence pulsed cold solid state performance enhancement, characterized by, The device of any one of claims 1-9 is adopted, the high polymer material is initially placed on the pay-off roller module, after the high-pressure calendering action of the calendering roller of the multi-stage multi-roller sequential pulse calendering module, the high polymer material is rewound at the winding roller module.

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