Cleaning material for extruder screw and preparation method thereof
By adding concave and convex rod soil to the cleaning material for extruder screws and controlling the weight ratio of calcium carbonate to concave and concave and convex rod soil, a cleaning material that can quickly and effectively clean the color powder inside the extruder is solved, and the problem of time and material consumption in the cleaning process of the extruder is achieved and a more efficient cleaning effect is achieved.
Patent Information
- Application Number
- CN202411725437.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-03-14
AI Technical Summary
During the use of the extruder, the toner/masterbatch is prone to residue, which makes the cleaning process time-consuming and material-consuming, and it is difficult for existing cleaning materials to clean these residues quickly and effectively.
A cleaning material for screws of extruders was developed, and a cleaning material with high adsorption properties was prepared by mixing the base resin, softener, lubricant, surfactant, calcium carbonate and concave and concave and convex soil in a specific proportion, and extruding and granulating through the extruder.
By adding concave and convex rod soil and limiting the weight ratio of calcium carbonate to concave and concave and concave and convex rod soil, the cleaning material can effectively adsorb and clean the toner inside the extruder, significantly reducing the toner residue, saving cleaning time and material use.
Smart Images
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Figure BDA0005159091460000111
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of cleaning materials, and in particular to cleaning materials for extruder screws and a preparation method thereof. Background Art
[0002] Screw cleaning compound is mainly used for cleaning the screw and barrel of plastic processing equipment such as injection molding machines and extruders. It is mainly used to remove residues inside the equipment, such as incompletely melted plastics, pigments, carbides, etc., to ensure the cleanliness of the equipment and production efficiency.
[0003] During the use of the extruder, plastic particles with added color powder / masterbatch are often prepared. When the material is replaced, the color powder / masterbatch in the previous batch of materials will remain in the extruder, requiring a large amount of cleaning material for cleaning, which consumes time and cleaning material.
[0004] Therefore, it is necessary to develop a cleaning material that can quickly clean out the toner / masterbatch in the extruder. Summary of the invention
[0005] In order to solve at least one of the above technical problems, a cleaning material capable of quickly cleaning color powder / masterbatch is developed. The present application provides a cleaning material for an extruder screw and a preparation method thereof.
[0006] On the one hand, the present application provides a cleaning material for an extruder screw, which is prepared by including the following components in parts by weight:
[0007] 65-85 parts of base resin;
[0008] 5-12 parts of softener;
[0009] 0.5-3 parts of lubricant;
[0010] 0.5-3 parts of surfactant;
[0011] 5-8 parts of calcium carbonate;
[0012] 2 to 5 parts of attapulgite.
[0013] Optionally, the weight ratio of calcium carbonate to attapulgite is 1.6 to 2:1.
[0014] Optionally, the softener is paraffin oil.
[0015] Optionally, the base resin is one of polypropylene and polyethylene.
[0016] Optionally, the lubricant is polypropylene wax or polyethylene wax.
[0017] Optionally, the surfactant is sodium dodecylbenzene sulfonate.
[0018] In a second aspect, the present application provides a method for preparing the above-mentioned extruder screw cleaning material, comprising the following steps:
[0019] S1. Mix and stir the surfactant, calcium carbonate and attapulgite to obtain a mixed filler;
[0020] S2, mixing the base resin, the softener, the lubricant and the mixed filler prepared in S1, and extruding and granulating through an extruder to obtain a cleaning material.
[0021] In summary, the present invention includes at least one of the following beneficial technical effects:
[0022] 1. By adding attapulgite, the high specific surface area of attapulgite and the rich narrow channels inside are used to absorb the toner when the cleaning material is used to clean the inside of the extruder, thereby reducing the amount of toner residue inside the extruder;
[0023] 2. By limiting the weight ratio of calcium carbonate to attapulgite, the friction performance of the cleaning material on the inside of the extruder and the adsorption performance on the toner are relatively balanced, which can well adsorb the toner scraped off by the cleaning material, avoiding scraping too much toner and failing to adsorb completely, and also avoiding the reduction of the scraping ability of toner, resulting in toner remaining on the inner wall of the extruder. DETAILED DESCRIPTION
[0024] The present application is further described in detail below with reference to the embodiments.
[0025] In the following examples of the present application, unless otherwise specified, the main components involved were purchased from commercially available products. Specific embodiments
[0027] Example 1
[0028] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0029] 0.5 kg of sodium dodecylbenzene sulfonate, 5 kg of calcium carbonate and 2 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 65 kg of polypropylene, 5 kg of paraffin oil, 0.5 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0030] Example 2
[0031] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0032] 1 kg of sodium dodecylbenzene sulfonate, 6 kg of calcium carbonate and 3 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 70 kg of polypropylene, 8 kg of paraffin oil, 1 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0033] Example 3
[0034] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0035] 1.5 kg of sodium dodecylbenzene sulfonate, 7 kg of calcium carbonate and 4 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 75 kg of polypropylene, 10 kg of paraffin oil, 1.5 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0036] Example 4
[0037] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0038] 2 kg of sodium dodecylbenzene sulfonate, 8 kg of calcium carbonate and 5 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 80 kg of polypropylene, 12 kg of paraffin oil, 2 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0039] Example 5
[0040] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0041] 3 kg of sodium dodecylbenzene sulfonate, 6 kg of calcium carbonate and 2 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 85 kg of polypropylene, 10 kg of paraffin oil, 3 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0042] Comparative Example 1
[0043] This comparative example uses polypropylene as the cleaning material for the extruder screw.
[0044] Comparative Example 2
[0045] This comparative example is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0046] 0.5 kg of sodium dodecylbenzene sulfonate and 5 kg of calcium carbonate were mixed and stirred evenly to obtain a mixed filler; 65 kg of polypropylene, 5 kg of paraffin oil, 0.5 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0047] The cleaning materials prepared in Examples 1 to 5 and Comparative Examples 1 to 2 were cleaned according to the following method: when used, the black polypropylene material of the previous batch was first discharged, and then the cleaning material was added and the temperature of the extruder was set from the original 200°C to 120°C, and the color change of the cleaning material was observed. When the temperature stabilized at 120°C and the extruded material gradually changed to the white color of the cleaning material, the temperature was raised to 200°C. When the temperature stabilized at 200°C, the addition of the cleaning material was stopped, and the amount of the cleaning material and the cleaning time were recorded, as shown in Table 1, where the time saving ratio is the time saving ratio of other cleaning materials relative to Comparative Example 1; the material saving ratio is the material saving ratio of other cleaning materials relative to Comparative Example 1.
[0048] Table 1
[0049] Cleaning materials Weight ratio of calcium carbonate to attapulgite Time saving ratio / % Material saving ratio / % Example 1 2.50 15 30 Example 2 2.00 22 35 Example 3 1.75 23 32 Example 4 1.60 21 30 Example 5 3.00 18 31 Comparative Example 1 / 0 0 Comparative Example 2 / 8 13
[0050] It can be seen from Examples 1 to 5, Comparative Examples 1 to 2 and Table 1 that using the cleaning material prepared in the present application to clean the extruder can save more than 15% of the cleaning time and more than 30% of the cleaning material.
[0051] It can be seen from Comparative Example 2 that in the technical solution of the present application, if attapulgite is not added, the improvement relative to Comparative Example 1 is limited; and the inventors further analyzed that the weight ratio of calcium carbonate to attapulgite has an impact on the cleaning performance of the cleaning material, and made Examples 6 to 15.
[0052] Examples 6 to 9 are based on Example 2, except that only the amount of attapulgite added is changed to change the weight ratio of calcium carbonate to attapulgite, as shown below.
[0053] Example 6
[0054] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0055] 1 kg of sodium dodecylbenzene sulfonate, 6 kg of calcium carbonate and 2 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 70 kg of polypropylene, 8 kg of paraffin oil, 1 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0056] Example 7
[0057] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0058] 1 kg of sodium dodecylbenzene sulfonate, 6 kg of calcium carbonate and 2.5 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 70 kg of polypropylene, 8 kg of paraffin oil, 1 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0059] Example 8
[0060] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0061] 1 kg of sodium dodecylbenzene sulfonate, 6 kg of calcium carbonate and 3.5 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 70 kg of polypropylene, 8 kg of paraffin oil, 1 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0062] Example 9
[0063] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0064] 1 kg of sodium dodecylbenzene sulfonate, 6 kg of calcium carbonate and 4 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 70 kg of polypropylene, 8 kg of paraffin oil, 1 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0065] The cleaning materials prepared in Examples 6 to 9 were cleaned according to the following method: when used, the black polypropylene material of the previous batch was first discharged, and then the cleaning material was added and the temperature of the extruder was set from the original 200°C to 120°C, and the color change of the cleaning material was observed. When the temperature stabilized at 120°C and the extruded material gradually changed to the white color of the cleaning material, the temperature was increased to 200°C. When the temperature stabilized at 200°C, the addition of the cleaning material was stopped, and the amount of the cleaning material and the cleaning time were recorded, as shown in Table 2, where the time saving ratio is the time ratio saved by other cleaning materials relative to Comparative Example 1; the material saving ratio is the material ratio saved by other cleaning materials relative to Comparative Example 1.
[0066] Table 2
[0067] Cleaning materials Weight ratio of calcium carbonate to attapulgite Time saving ratio / % Material saving ratio / % Example 6 3.00 15 32 Example 7 2.40 17 34 Example 2 2.00 22 35 Example 8 1.71 23 33 Example 9 1.50 17 31
[0068] Examples 10 to 12 are based on Example 3, except that only the amount of attapulgite added is changed to change the weight ratio of calcium carbonate to attapulgite, as shown below.
[0069] Example 10
[0070] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0071] 1.5 kg of sodium dodecylbenzene sulfonate, 7 kg of calcium carbonate and 3 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 75 kg of polypropylene, 10 kg of paraffin oil, 1.5 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0072] Embodiment 11
[0073] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0074] 1.5 kg of sodium dodecylbenzene sulfonate, 7 kg of calcium carbonate and 3.5 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 75 kg of polypropylene, 10 kg of paraffin oil, 1.5 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0075] Example 12
[0076] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0077] 1.5 kg of sodium dodecylbenzene sulfonate, 7 kg of calcium carbonate and 4.5 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 75 kg of polypropylene, 10 kg of paraffin oil, 1.5 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0078] The cleaning materials prepared in Examples 10 to 12 were cleaned according to the following method: when used, the black polypropylene material of the previous batch was first discharged, and then the cleaning material was added and the temperature of the extruder was set from the original 200°C to 120°C, and the color change of the cleaning material was observed. When the temperature stabilized at 120°C and the extruded material gradually changed to the white color of the cleaning material, the temperature was raised to 200°C. When the temperature stabilized at 200°C, the addition of the cleaning material was stopped, and the amount of the cleaning material and the cleaning time were recorded, as shown in Table 3, where the time saving ratio is the time ratio saved by other cleaning materials relative to Comparative Example 1; the material saving ratio is the material ratio saved by other cleaning materials relative to Comparative Example 1.
[0079] Table 3
[0080] Cleaning materials Weight ratio of calcium carbonate to attapulgite Time saving ratio / % Material saving ratio / % Example 10 2.33 18 33 Embodiment 11 2.00 22 34 Example 3 1.75 23 32 Example 12 1.56 16 31
[0081] Examples 13 to 15 are based on Example 4, except that only the amount of attapulgite added is changed to change the weight ratio of calcium carbonate to attapulgite, as shown below.
[0082] Embodiment 13
[0083] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0084] 2 kg of sodium dodecylbenzene sulfonate, 8 kg of calcium carbonate and 3.5 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 80 kg of polypropylene, 12 kg of paraffin oil, 2 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0085] Embodiment 14
[0086] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0087] 2 kg of sodium dodecylbenzene sulfonate, 8 kg of calcium carbonate and 4 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 80 kg of polypropylene, 12 kg of paraffin oil, 2 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0088] Embodiment 15
[0089] This embodiment is used to prepare a cleaning material for a polypropylene extruder screw; the base resin is polypropylene, the softener is paraffin oil, the lubricant is polypropylene wax, and the surfactant is sodium dodecylbenzene sulfonate.
[0090] 2 kg of sodium dodecylbenzene sulfonate, 8 kg of calcium carbonate and 4.5 kg of attapulgite were mixed and stirred evenly to obtain a mixed filler; 80 kg of polypropylene, 12 kg of paraffin oil, 2 kg of polypropylene wax and the mixed filler prepared above were mixed, and extruded and granulated by an extruder to obtain a cleaning material.
[0091] The cleaning materials prepared in Examples 13 to 15 were cleaned according to the following method: when used, the black polypropylene material of the previous batch was first discharged, and then the cleaning material was added and the temperature of the extruder was set from the original 200°C to 120°C, and the color change of the cleaning material was observed. When the temperature stabilized at 120°C and the extruded material gradually changed to the white color of the cleaning material, the temperature was raised to 200°C. When the temperature stabilized at 200°C, the addition of the cleaning material was stopped, and the amount of the cleaning material and the cleaning time were recorded, as shown in Table 4, where the time saving ratio is the time ratio saved by other cleaning materials relative to Comparative Example 1; the material saving ratio is the material ratio saved by other cleaning materials relative to Comparative Example 1.
[0092] Table 4
[0093]
[0094]
[0095] It can be seen from Examples 6 to 15 and Tables 2 to 4 that in the technical scheme of the present application, when the weight ratio of calcium carbonate to attapulgite is 1.6 to 2:1, the prepared cleaning material can further reduce the cleaning time and amount. Compared with Comparative Example 1, the time is saved by more than 20%, the material is saved by more than 30%, and the cleaning effect is better.
[0096] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cleaning material for an extruder screw, characterized in that: The invention is prepared by comprising the following components in parts by weight: 65-85 parts of base resin; 5-12 parts of softener; 0.5-3 parts of lubricant; 0.5-3 parts of surfactant; 5-8 parts of calcium carbonate; 2 to 5 parts of attapulgite.
2. The extruder screw cleaning material according to claim 1, characterized in that: The weight ratio of the calcium carbonate to attapulgite is 1.6 to 2:
1.
3. The cleaning material for extruder screw according to claim 1, characterized in that: The softener is paraffin oil.
4. The cleaning material for extruder screw according to claim 1, characterized in that: The base resin is one of polypropylene and polyethylene.
5. The cleaning material for extruder screw according to claim 1, characterized in that: The lubricant is polypropylene wax or polyethylene wax.
6. The cleaning material for extruder screw according to claim 1, characterized in that: The surfactant is sodium dodecylbenzene sulfonate.
7. A method for preparing a cleaning material for an extruder screw according to claim 1, characterized in that: The following steps are involved: S1. Mix and stir the surfactant, calcium carbonate and attapulgite to obtain a mixed filler; S2, mixing the base resin, the softener, the lubricant and the mixed filler prepared in S1, and extruding and granulating through an extruder to obtain a cleaning material.