A modified pc material and a method for producing the same

Abstract

The application relates to the technical field of modified PC processing, and discloses a modified PC material, which comprises the following components in parts by weight: 80-100 parts of polycarbonate, 1-5 parts of talcum powder, 5-10 parts of jute fiber, 1-5 parts of epoxy silane, 1-5 parts of polyethylene wax, 0.9-5 parts of antioxidant B900, and 1-5 parts of decabromodiphenyl ethane. The technical scheme adopts natural jute fiber to replace traditional glass fiber to modify the PC material. Compared with the traditional glass fiber, the jute fiber has the advantages of small density, low cost and low energy consumption. For the production of the same product, the non-renewable energy consumed by the jute fiber is 10-30% less than that of the glass fiber. Meanwhile, the jute fiber can be naturally degraded, so that the modified PC material has a smaller influence on the environment after being discarded, and is more environmentally friendly.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of modified PC processing, in particular to a modified PC material and a preparation method thereof. BACKGROUND

[0002] Polycarbonate, also known as PC, is an excellent engineering plastic, which is widely used in the fields of building materials, electronics and automobile manufacturing due to its high mechanical strength, good light transmittance and electrical insulation. The single PC material has low strength and low rigidity, and in order to improve the strength of the PC material, the most common method is to add glass fibers to the PC material. The glass fiber reinforced composite material has been widely used for many years due to its low cost and moderate strength, but the non-biodegradable property of the glass fiber makes it unsatisfactory in environmental performance. With the gradual deepening of the concept of environmental protection, the market demand for environmentally friendly PC materials is increasing. How to provide a more environmentally friendly modified PC material has become a problem to be solved. SUMMARY

[0003] The application provides a modified PC material and a preparation method thereof, which have the beneficial effect of being more environmentally friendly and solve the problem of how to provide a more environmentally friendly modified PC material mentioned in the background.

[0004] The application provides the following technical scheme: a modified PC material, according to weight parts, 80-100 parts of polycarbonate, 1-5 parts of talcum powder, 5-10 parts of jute fiber, 1-5 parts of epoxy silane, 1-5 parts of polyethylene wax and antioxidant B9001-5 parts, and 1-5 parts of decabromodiphenyl ethane.

[0005] The application also provides a preparation method of the modified PC material, which comprises the following steps:

[0006] S1, heat treatment of jute fiber: the jute fiber is placed in a drying machine and heated for 1-4 hours in a nitrogen-filled environment, and the heating temperature is 200-240 DEG C;

[0007] S2, jute fiber modification treatment: the jute fiber is placed in a water tank, 25% sodium hydroxide is used to soak the jute fiber for 10-30 minutes at 20-25 DEG C, after soaking, the jute fiber is taken out and cleaned, then the jute fiber is dried, and after drying, the jute fiber is cut into fiber silk with a length of 0.4-0.8 mm for standby;

[0008] S3, weighing: the materials are weighed by an automatic batching machine according to the weight ratio, and after the weighing of the materials is completed, the materials are sent into a mixer for stirring;

[0009] S4, extrusion granulation: the uniformly mixed material is added into a double screw extruder, the material is fully melt blended and extruded through the double screw extruder under the environment with the temperature of 220-260 degrees Celsius, the material is cooled through water cooling after extrusion, and then the material is cut into particles.

[0010] As an optional solution of the preparation method of the modified PC material, the automatic batching machine in step S3 comprises a rack, a batching barrel is arranged on the upper side of the rack, a collecting barrel is arranged on the lower side of the rack, a hopper is arranged on the upper side of the collecting barrel, the batching barrel is in sliding connection with the rack, weighing assemblies are arranged on both sides of the batching barrel, a water inlet is arranged on the upper end of the batching barrel, a feeding port is arranged on one side of the batching barrel, a discharging port is arranged at the bottom of the batching barrel, and a cleaning assembly is arranged in the batching barrel.

[0011] The cleaning assembly comprises a cleaning seat, the cleaning seat is in sliding connection with the batching barrel through a guide rod, a first cavity is arranged in the cleaning seat, a plurality of nozzles in communication with the first cavity are arranged on the outer side of the cleaning seat, a counterweight seat is arranged in the first cavity, a fixing seat is arranged in the middle of the counterweight seat, a plurality of second cavities are arranged on the outer side of the fixing seat, a plurality of first through holes are arranged on the outer wall of the counterweight seat, the positions and the number of the first through holes correspond to the second cavities one by one, a first plug that is matched with the first through hole is arranged in the second cavity, the first plug is in elastic connection with the counterweight seat through a first spring, and a drain pipe is arranged at the bottom of the cleaning seat.

[0012] As an optional solution of the preparation method of the modified PC material, a fixing groove is arranged in the fixing seat, and a drainage assembly is arranged in the fixing groove, the drainage assembly comprises a piston rod, a sealing plate and a hole plate, a limiting block is arranged on the upper side of the hole plate, and the limiting block is in elastic connection with the hole plate through a second spring.

[0013] The sealing plate is arranged on the lower side of the hole plate, a piston is arranged between the sealing plate and the hole plate, and one end of the piston rod penetrates through the sealing plate and is fixedly connected with the piston.

[0014] As an optional solution of the preparation method of the modified PC material, one end of the drain pipe is in communication with the fixing seat, a second plug is arranged at the end of the drain pipe away from the fixing seat, the second plug is fixedly connected with the piston rod, and the second plug is in elastic connection with the cleaning seat through a third spring.

[0015] As an optional scheme of the preparation method of the modified pc material, the fixing seat is in a cylindrical shape, a first opening in communication with the fixing groove is arranged at the top of the fixing seat, and a second opening in communication with the second cavity is arranged at the lower side of the fixing seat.

[0016] As an optional scheme of the preparation method of the modified pc material, a second through hole is arranged at the middle part of the limiting block, the diameter of the second through hole is smaller than the diameter of the first opening, a magnetic suction block is arranged at the upper end of the limiting block, and the limiting block is adsorbed with the fixing seat through the magnetic suction block.

[0017] As an optional scheme of the preparation method of the modified pc material, an extension rod is arranged at the end of the piston away from the piston rod, one end of the extension rod penetrates through the hole plate and is inserted into the second through hole.

[0018] As an optional scheme of the preparation method of the modified pc material, a pipe joint and a tension spring are arranged at the upper end of the cleaning seat, the pipe joint is in communication with the water inlet through a spring pipe, and one end of the tension spring is fixedly connected with the ingredient barrel.

[0019] As an optional scheme of the preparation method of the modified pc material, the weighing assembly comprises a fixed plate, a third opening matched with the ingredient barrel is arranged on the fixed plate, the fixed plate is elastically connected with the ingredient barrel through a spring, and a weighing sensor is arranged at the upper side of the fixed plate.

[0020] The present application has the following beneficial effects:

[0021] 1. The modified pc material and the preparation method thereof, the technical scheme adopts jute fibers to modify PC materials, in order to obtain better modification effect, the technical scheme first processes the jute fibers through a heat treatment process, through high temperature treatment, the water content in the jute fibers can be effectively reduced, at the same time, the hydroxyl groups in the jute fibers will also be reduced in the heat treatment process, so that the jute fibers can have good combination performance with other materials in the subsequent processing process.

[0022] Then the jute fibers are treated through an alkali treatment method, the jute fibers are modified by sodium hydroxide to remove the weak components such as lignin on the surface of the jute fibers, so that the cellulose molecules in the jute fibers are exposed, thereby improving the surface roughness of the jute fibers to increase the adhesion of the jute fibers and other materials.

[0023] 2. This modified PC material and its preparation method involve setting up a batching machine with an internal cleaning component. The batching machine includes a frame and a batching barrel. The cleaning component is located inside the batching barrel and includes a cleaning seat. A counterweight is located inside the cleaning seat, and several second cavities are located inside the counterweight. The second cavities are connected to the first cavities through first through holes. A first plug is also located inside the counterweight, and the first plug is elastically connected to the counterweight through a first spring. The elastic force of each first spring is different. When it is necessary to move the cleaning seat downward, the water pressure is increased. When the water pressure increases, the water in the first cavity will push open the first plug and enter the second cavity. When the second cavity is full of water, the weight of the cleaning seat increases. At this time, the cleaning seat will overcome the resistance of the tension spring and move downward. In use, as long as the water pressure is continuously increased, more and more second cavities will be filled with water, and the cleaning seat will continue to move downward.

[0024] This technical solution uses a counterweight seat with multiple second cavities inside the cleaning seat to increase the weight of the cleaning seat by using water power, so that it can move slowly downwards, thereby achieving the purpose of cleaning the inner wall of the mixing tank. It can complete the cleaning of the mixing tank without opening the mixing tank, with high cleaning efficiency and good cleaning effect.

[0025] 3. This modified PC material and its preparation method, by setting a drainage component at the fixed seat, can cause the drainage component to move by increasing the water pressure, thereby keeping the drainage pipe unobstructed. In this way, the water in the second cavity can be discharged through the drainage pipe, thereby reducing the weight of the cleaning seat and allowing it to return to its original position. By setting a limiting block with a second through hole, when water is discharged, the water pressure will drop. At this time, the limiting block will return to its original position under the push of the second spring. For the piston to return to its original position, the water between the piston and the limiting block needs to be emptied. Since the second through hole on the limiting block is small, it takes a certain amount of time to empty the water. Thus, the piston and piston rod will not immediately return to their original position, allowing the drainage pipe to remain unobstructed for a certain period of time, facilitating the drainage of water in the second cavity. This allows the cleaning seat to quickly return to its original position for the next cleaning cycle, resulting in higher cleaning efficiency. Attached Figure Description

[0026] Figure 1 This is a flowchart of the preparation method of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the present invention.

[0028] Figure 3 This is a schematic diagram of the internal structure of the ingredient container of the present invention.

[0029] Figure 4 This is a schematic diagram of the cleaning seat structure of the present invention.

[0030] Figure 5 It is a schematic view of the internal structure of the cleaning seat of the present application.

[0031] Figure 6 It is a sectional view of the cleaning seat of the present application.

[0032] Figure 7 It is a schematic view of the internal structure of the fixing seat of the present application.

[0033] In the figure: 1, frame; 2, ingredient bucket; 201, water inlet; 202, feed inlet; 203, discharge outlet; 3, collection bucket; 4, hopper; 5, cleaning seat; 501, first cavity; 502, nozzle; 6, counterweight seat; 601, second cavity; 602, first through hole; 603, first plug; 604, first spring; 7, fixing seat; 701, fixing groove; 702, piston rod; 703, sealing plate; 704, aperture plate; 705, limiting block; 7051, second through hole; 706, second spring; 707, piston; 7071, extension rod; 708, first opening; 709, second opening; 8, drain pipe; 9, second plug; 10, third spring; 11, magnetic suction block; 12, pipe joint; 13, tension spring; 14, spring pipe; 15, support lug; 16, load cell; 17, guide rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0035] Embodiment 1

[0036] The present application provides a modified PC material, by weight parts as follows: 80-100 parts of polycarbonate, 1-5 parts of talc, 5-10 parts of jute fiber, 1-5 parts of epoxy silane, 1-5 parts of polyethylene wax and antioxidant B9001-5 parts, 1-5 parts of decabromodiphenyl ethane.

[0037] The technical solution replaces the traditional glass fiber with natural jute fiber to modify the PC material. Compared with the traditional glass fiber, the jute fiber has the advantages of small density, low cost and low energy consumption. For the production of the same product, the jute fiber consumes 10-30% less non-renewable energy than the glass fiber. At the same time, since the jute fiber can be naturally degraded, the modified PC material has less impact on the environment after being discarded, and is more environmentally friendly.

[0038] Embodiment 2

[0039] The embodiment is based on the explanation of embodiment 1, and specifically, please refer to Figure 1 The application also provides a preparation method of the modified PC material, comprising the following steps:

[0040] S1, heat treatment of jute fibers: put the jute fibers into a drying machine and perform heating treatment for 1-4 hours in a nitrogen-filled environment, and the heating temperature is 200-240 degrees Celsius;

[0041] S2, jute fiber modification treatment: put the jute fibers into a water tank, use 25% sodium hydroxide to soak the jute fibers for 10-30 minutes in an environment of 20-25 degrees Celsius, after soaking, take out the jute fibers and clean them, then dry the jute fibers, and cut the jute fibers into fiber filaments with a length of 0.4-0.8mm for standby;

[0042] S3, weighing: automatically weigh the materials by the automatic batching machine according to the weight ratio, and after the weighing of the materials is completed, send them into the mixer for stirring;

[0043] S4, extrusion granulation: add the mixed materials into the double screw extruder, melt and blend the materials in the double screw extruder at a temperature of 220-260 degrees Celsius, and then extrude the materials, cool the materials by water cooling, and then cut the materials into particles.

[0044] The jute fibers are used to modify the PC material, in order to obtain better modification effect, the jute fibers are first treated by heat treatment process, through high temperature treatment, the moisture in the jute fibers can be effectively reduced, and at the same time, the hydroxyl groups in the jute fibers can also be reduced in the heat treatment process, so that the jute fibers can have good combination performance with other materials in the subsequent processing process.

[0045] Then the jute fibers are treated by alkali treatment method, the jute fibers are modified by sodium hydroxide to remove the weak components such as lignin on the surface of the jute fibers, so that the cellulose molecules in the jute fibers are exposed, thereby improving the surface roughness of the jute fibers to increase the adhesion of the jute fibers with other materials.

[0046] Embodiment 3

[0047] The embodiment is based on the explanation of embodiment 1, and specifically, please refer to Figures 1 to 7The automatic batching machine in step S3 comprises a rack 1, a batching barrel 2 is arranged on the upper side of the rack 1, a collecting barrel 3 is arranged on the lower side of the rack 1, a hopper 4 is arranged on the upper side of the collecting barrel 3, the batching barrel 2 is in sliding connection with the rack 1, weighing assemblies are arranged on the two sides of the batching barrel 2, a water inlet 201 is arranged at the upper end of the batching barrel 2, a material inlet 202 is arranged on one side of the batching barrel 2, a material outlet 203 is arranged at the bottom of the batching barrel 2, and a cleaning assembly is arranged in the batching barrel 2;

[0048] The cleaning assembly comprises a cleaning seat 5, the cleaning seat 5 is in sliding connection with the batching barrel 2 through a guide rod 17, a first cavity 501 is arranged in the cleaning seat 5, a plurality of nozzles 502 in communication with the first cavity 501 are arranged on the outer side of the cleaning seat 5, a counterweight seat 6 is arranged in the first cavity 501, a fixing seat 7 is arranged in the middle of the counterweight seat 6, a plurality of second cavities 601 are arranged on the outer side of the fixing seat 7, a plurality of first through holes 602 are arranged on the outer wall of the counterweight seat 6, the positions and the number of the first through holes 602 correspond to the second cavities 601 one by one, a first plug 603 matching the first through holes 602 is arranged in the second cavities 601, the first plug 603 is in elastic connection with the counterweight seat 6 through a first spring 604, and a drain pipe 8 is arranged at the bottom of the cleaning seat 5.

[0049] A pipe joint 12 and a tension spring 13 are arranged at the upper end of the cleaning seat 5, the pipe joint 12 is in communication with the water inlet 201 through a spring pipe 14, and one end of the tension spring 13 is fixedly connected with the batching barrel 2.

[0050] With the continuous development of science and technology, many processes have been automated, in the processing of modified PC, some manufacturers with high automation degree are all through automatic batching machines to carry out batching, not only the batching is accurate, but also the automatic batching machine is a fully enclosed structure, which also eliminates dust pollution. When the powder is distributed, if the powder is damp or not completely dry, the powder is easy to adhere to the inner wall of the batching barrel, thereby causing inaccurate batching, therefore, the batching barrel needs to be cleaned regularly, the traditional cleaning method is to disassemble the batching barrel and then clean the inside, this cleaning method needs to consume a lot of time and has poor cleaning efficiency. Therefore, the technical scheme sets an automatic batching machine with a cleaning assembly inside to solve the above problems.

[0051] The automatic batching machine comprises a rack 1, a plurality of batching barrels 2 are arranged on the upper side of the rack 1, weighing assemblies are arranged at the batching barrels 2, in batching, the material is sent into the batching barrel 2 through a material pump for weighing, a collecting barrel 3 is arranged on the lower side of the batching barrel 2, the weighed material is collected by the collecting barrel 3, and then is sent to a stirring device for mixing.

[0052] A cleaning assembly is arranged in the ingredient bucket 2, one side of the ingredient bucket 2 is provided with an inlet 202, the cleaning assembly comprises a cleaning seat 5 which can move up and down in the ingredient bucket 2, the cleaning seat 5 is elastically connected with the ingredient bucket 2 through a tension spring 13, a first cavity 501 is arranged in the cleaning seat 5, a plurality of nozzles 502 are arranged on the outer side of the cleaning seat 5, under normal circumstances, the height of the cleaning seat 5 is higher than the inlet 202, so that when the material enters the ingredient bucket 2, the existence of the cleaning seat 5 will not interfere with the entering of the material, when cleaning is needed, water is sent into the cleaning seat 5, the water will first fill the first cavity 501 and then be sprayed out through the nozzles 502.

[0053] Due to the limited space in the ingredient bucket 2, if a lifting mechanism is installed in the ingredient bucket 2 to control the lifting of the cleaning seat 5, on the one hand, the valuable space in the ingredient bucket 2 will be occupied, on the other hand, the inside of the ingredient bucket 2 will be full of dust during work, the working environment is relatively poor, and the service life of the lifting mechanism is easily affected, therefore, the technical solution adopts a special design to realize the lifting of the cleaning seat 5, and the specific principle is as follows:

[0054] A counterweight seat 6 is arranged in the cleaning seat 5, a plurality of second cavities 601 are arranged in the counterweight seat 6, a first through hole 602 for connecting the first cavity 501 and the second cavity 601 is arranged at the counterweight seat 6, a first plug 603 for plugging the first through hole 602 is arranged in the counterweight seat 6, the first plug 603 is elastically connected with the counterweight seat 6 through a first spring 604, the elastic force of each first spring 604 is different, so that during use, if it is needed to make the cleaning seat 5 move downward, the water pressure needs to be increased, when the water pressure in the first cavity 501 increases, the water flow in the first cavity 501 will push the first plug 603 to move and enter the second cavity 601 through the first through hole 602, when the second cavity 601 is filled with water, the weight of the cleaning seat 5 becomes larger, at this time, the cleaning seat 5 will overcome the resistance of the tension spring 13 and move downward, during use, only by continuously increasing the water pressure, more and more second cavities 601 will be filled with water, and the cleaning seat 5 will continuously move downward;

[0055] Due to the plurality of second cavities 601 arranged in the counterweight seat 6, as the water pressure increases, more and more second cavities 601 will be filled with water, the more the second cavities 601 filled with water, the closer the position of the cleaning seat 5 to the lower end of the ingredient bucket, so that by arranging the counterweight seat 6 with the plurality of second cavities 601 in the cleaning seat 5, the weight of the cleaning seat 5 is increased by using water power, so that the cleaning seat 5 can slowly move downward, and the purpose of cleaning the inner wall of the ingredient bucket 2 is achieved, the cleaning of the ingredient bucket 2 can be completed without opening the ingredient bucket 2, the cleaning efficiency is high and the cleaning effect is good.

[0056] Embodiment 4

[0057] This embodiment is based on the explanation of embodiment 1, please refer to Figures 1 to 7 The fixed seat 7 is provided with a fixed groove 701, and the fixed groove 701 is provided with a drainage assembly, which comprises a piston rod 702, a sealing plate 703 and a hole plate 704, the upper side of the hole plate 704 is provided with a limiting block 705, and the limiting block 705 is elastically connected with the hole plate 704 through a second spring 706.

[0058] The sealing plate 703 is located on the lower side of the hole plate 704, and a piston 707 is arranged between the sealing plate 703 and the hole plate 704, one end of the piston rod 702 penetrates through the sealing plate 703 and is fixedly connected with the piston 707.

[0059] One end of the drain pipe 8 is communicated with the fixed seat 7, and the end of the drain pipe 8 away from the fixed seat 7 is provided with a second plug 9, the second plug 9 is fixedly connected with the piston rod 702, and the second plug 9 is elastically connected with the cleaning seat 5 through a third spring 10.

[0060] Since the technical solution utilizes water to increase the weight of the cleaning seat 5, so that it moves downward, when the cleaning seat 5 moves to the bottom end, the water in the counterweight seat 6 needs to be drained, so that the cleaning seat 5 can return to the original position, the faster the drainage speed, the faster the counterweight seat 6 can return to the original position, and the shorter the whole cleaning period. Therefore, the technical solution is provided with a drainage assembly at the fixed seat 7, the drainage assembly comprises a piston rod 702, a sealing plate 703 and a hole plate 704, one end of the fixed seat 7 extends from the counterweight seat 6 and extends into the first cavity 501, a first opening 708 communicated with the fixed groove 701 is arranged on the fixed seat 7, when the water pressure increases to the maximum, the water flow will push away the limiting block 705, then enters the fixed groove 701 through the first opening 708, then penetrates through the through hole on the hole plate 704 and pushes the piston 707 and the piston rod 702 to move downward, one end of the piston rod 702 is fixed with the second plug 9, under the pushing of the piston rod 702, the second plug 9 is pulled out of the drain pipe 8, at this time, the water in the second cavity 601 enters the fixed groove 701 through the second opening 709, and then is discharged through the drain pipe 8.

[0061] Embodiment 5

[0062] This embodiment is based on the explanation of embodiment 1, please refer to Figures 1 to 7 The fixed seat 7 is cylindrical, and the top of the fixed seat 7 is provided with a first opening 708 communicated with the fixed groove 701, and the lower end of the fixed seat 7 is provided with a second opening 709 communicated with the second cavity 601.

[0063] The middle part of the limiting block 705 is provided with a second through hole 7051, and the diameter of the second through hole 7051 is smaller than the diameter of the first opening 708. The upper end of the limiting block 705 is provided with a magnetic suction block 11, and the limiting block 705 is adsorbed together with the fixed seat 7 through the magnetic suction block 11. The end of the piston 707 away from the piston rod 702 is provided with an extension rod 7071, and one end of the extension rod 7071 passes through the hole plate 704 and is inserted into the second through hole 7051.

[0064] In order to improve the drainage effect of the drainage assembly, the technical scheme is provided with the limiting block 705 with the second through hole 7051. When the water flow under pressure pushes open the limiting block 705 to enter the fixed groove 701 to push the piston 707 and the piston rod 702 to move, the water in the second cavity 601 will be discharged through the drain pipe 8. When the water is discharged, the pressure of the water will decrease. At this time, the limiting block 705 will return to the original position under the push of the second spring 706. In order to return to the original position, the piston 707 needs to empty the water between the piston 707 and the limiting block 705. Because the second through hole 7051 on the limiting block 705 is small, it takes a certain time to empty the water. Therefore, the piston 707 and the piston rod 702 will not return to the original position immediately, so that the drain pipe 8 can maintain unobstructed for a certain period of time, facilitating the discharge of water in the second cavity 601, and thus the cleaning seat 5 can quickly return to the original position, so as to perform the next cycle of cleaning.

[0065] The extension rod 7071 is provided on the piston 707 and matches the second through hole 7051. When the piston 707 returns to the original position, the extension rod 7071 will block the second through hole 7051 on the limiting block 705. Therefore, the water in the first cavity 501 will not enter the fixed groove 701 in advance, so that the second plug 9 moves in advance.

[0066] Embodiment 6

[0067] This embodiment is an explanation and description based on embodiment 1. For details, please refer to Figures 1 to 7 The weighing assembly comprises a supporting ear 15, one end of the supporting ear 15 is fixedly connected with the rack 1, and the upper end of the supporting ear 15 is provided with a weighing sensor 16.

[0068] A TJH-1 type load sensor is arranged on the supporting rod, and the probe of the weighing sensor 16 abuts against the batching bucket. The batching bucket 2 can be weighed through the weighing sensor 16.

[0069] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0070] The above merely preferred embodiments of the present application, it should be pointed out that, for those skilled in the art, without departing from the technical principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A method for producing a modified pc material, characterized in that The modified PC material is as follows in parts by weight: 80-100 parts of polycarbonate, 1-5 parts of talcum powder, 5-10 parts of jute fiber, 1-5 parts of epoxy silane, 1-5 parts of polyethylene wax, 1-5 parts of antioxidant B900, and 1-5 parts of decabromodiphenyl ethane; The preparation method comprises the following steps: S1, heat treatment of jute fiber: place the jute fiber in a drying machine and perform heating treatment for 1-4 hours in a nitrogen-filled environment at a temperature of 200-240 degrees Celsius; S2, modification treatment of jute fiber: place the jute fiber in a water tank and soak it in 25% sodium hydroxide solution at 20-25 degrees Celsius for 10-30 minutes, then take out the jute fiber and clean it, and then dry the jute fiber and cut it into fiber filaments with a length of 0.4-0.8 mm for use; S3, weighing: automatically weigh the materials by weight through an automatic batching machine, and then send them into a mixer for stirring; S4, extrusion granulation: add the mixed materials into a double-screw extruder, melt and blend the materials in the double-screw extruder at a temperature of 220-260 degrees Celsius, and then extrude the materials, cool them by water, and then cut them into granules; The automatic batching machine in step S3 comprises a rack, a batching barrel arranged on the upper side of the rack, and a collecting barrel arranged on the lower side of the rack, a hopper arranged on the upper side of the collecting barrel, the batching barrel being slidably connected with the rack, weighing assemblies arranged on the two sides of the batching barrel, a water inlet arranged on the upper end of the batching barrel, a material inlet arranged on one side of the batching barrel, a material outlet arranged at the bottom of the batching barrel, and a cleaning assembly arranged in the batching barrel; The cleaning assembly comprises a cleaning seat slidably connected with the batching barrel through a guide rod, a first cavity arranged in the cleaning seat, a plurality of nozzles arranged on the outer side of the cleaning seat and in communication with the first cavity, a counterweight seat arranged in the first cavity, a fixing seat arranged in the middle of the counterweight seat, a plurality of second cavities arranged on the outer side of the fixing seat, a plurality of first through holes arranged on the outer wall of the counterweight seat and corresponding to the second cavities in position and number, a first plug arranged in the second cavity and matched with the first through hole, the first plug being elastically connected with the counterweight seat through a first spring, and a drain pipe arranged at the bottom of the cleaning seat; The fixing seat is in the form of a cylinder, a first opening in communication with the fixing groove is arranged at the top of the fixing seat, and a second opening in communication with the second cavities is arranged at the lower side of the fixing seat. ​ ​ 2. A method of producing a modified pc material according to claim 1, characterized in that ​ 3. A method of producing a modified pc material according to claim 2, characterized in that: The middle part of the limiting block is provided with a second through hole, and the diameter of the second through hole is smaller than the diameter of the first opening.

4. A method of producing a modified pc material according to claim 3, characterized in that: The end of the piston away from the piston rod is provided with an extension rod, one end of the extension rod passes through the hole plate and is inserted into the second through hole.

5. A method of producing a modified pc material according to claim 4, characterized in that: The upper end of the cleaning seat is provided with a pipe joint and a tension spring, the pipe joint communicates with the water inlet through a spring pipe, and one end of the tension spring is fixedly connected with the ingredient barrel.

6. A method of producing a modified pc material according to claim 5, characterized in that: The weighing assembly comprises a supporting lug, one end of the supporting lug is fixedly connected with the rack, and a weighing sensor is arranged at the upper end of the supporting lug.

Images