Environment-friendly splash-proof coating barrel material and preparation method thereof
By grafting sepiolite with high-density polyethylene, polylactic acid and other materials into the plastic paint bucket material to form a dense structure, the problems of insufficient corrosion resistance and impact resistance of plastic paint buckets are solved, and an environmentally friendly splash-proof effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2026-04-07
AI Technical Summary
Existing plastic paint bucket materials lack long-term corrosion resistance and are difficult to meet impact strength requirements. In addition, the paint has poor affinity with the bucket, which makes the paint easy to splash out and pollute the environment.
After being activated by sepiolite, it is grafted with surfactants, methyl acrylate and ethylenediamine to form an organic dendritic molecular structure, and then crosslinked with materials such as high-density polyethylene, polylactic acid, graphene oxide, and montmorillonite to form a dense structure, thereby enhancing the splash-proof performance.
It improves the corrosion resistance and impact resistance of paint buckets, enhances compatibility with oil-based paints, reduces paint splatter, and is both environmentally friendly and durable.
Smart Images
Figure CN121801181A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of paint bucket technology, and in particular to an environmentally friendly anti-splash paint bucket material and its preparation method. Background Technology
[0002] Paint is a commonly used material in construction and decoration, with a wide range of types and applications. When applying paint, it is usually stored in an iron or plastic bucket. Before use, the paint needs to be stirred and mixed for easier application.
[0003] Currently, plastic drums are widely used for the storage and transportation of various liquids. They exhibit excellent properties for packaging special hazardous materials, being unbreakable, rust-free, and lightweight, and show great promise for use in coatings. Plastic drums are primarily made from polyethylene, polypropylene, polyester, and other plastics through processes such as blow molding, injection molding, vacuum forming, and rotational molding. However, existing plastic drum materials lack long-term corrosion resistance and are insufficient to meet the impact strength requirements of practical use.
[0004] Meanwhile, existing paint buckets come in various types, but almost all of them have the problem of poor compatibility between the paint bucket and the paint. When there is a lot of paint, it is easy to splash out and pollute the environment. Therefore, the materials of existing paint buckets need to be improved. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an environmentally friendly anti-splash coating bucket material and its preparation method.
[0006] A method for preparing an environmentally friendly anti-splash paint bucket material includes the following steps:
[0007] S1. Activate sepiolite; add activated sepiolite and surfactant into methanol and stir for 10-30 min. While stirring, add methyl acrylate dropwise and stir for 10-20 h. Add ethylenediamine and continue stirring. Filter, wash and dry to obtain grafted sepiolite.
[0008] S2. Mix high-density polyethylene and polylactic acid, then add grafted sepiolite, graphene oxide, montmorillonite, and processing aids and stir for 10-30 minutes at a stirring temperature of 40-60℃. Melt and knead, extrude, pelletize, and hot press to obtain environmentally friendly anti-splatter coating bucket material.
[0009] Preferably, in S1, the surfactant is at least one of dodecyl dimethyl betaine, hexadecyl trimethylammonium bromide, and quaternary ammonium salt type gemini surfactant CG12-2-12.
[0010] Preferably, in S1, the mass ratio of activated sepiolite, surfactant, methyl acrylate, and ethylenediamine is 5-10:0.1-1:1-5:1-5.
[0011] Preferably, in S1, the specific operation of the sepiolite activation treatment is as follows: add sepiolite to water, stir at 40-50℃ for 1-3 hours, let stand for 1-5 hours, adjust the pH of the system to 2-4, sonicate, add coupling agent KH550, stir at 50-80℃ for 1-2 hours, wash, dry, and pulverize.
[0012] More preferably, the mass ratio of sepiolite to coupling agent KH550 is 5-15:0.1-1.
[0013] More preferably, the ultrasonic treatment time is 1-2 hours and the ultrasonic frequency is 5-12 kHz.
[0014] More preferably, the pH of the system is adjusted to 2-4 using a 2-4 mol / L sulfuric acid solution.
[0015] Preferably, in S2, the number average molecular weight of the high-density polyethylene is 6400-11000.
[0016] Preferably, in S2, the mass ratio of high-density polyethylene, polylactic acid, grafted sepiolite, graphene oxide, montmorillonite, and processing aids is 50-120:1-5:5-15:1-5:10-20:1-3.
[0017] Preferably, in S2, the processing aids include: lubricant and antioxidant.
[0018] Preferably, in S2, the specific operation of hot pressing is as follows: the pelletized material is added into a hot pressing mold with a release agent coated on the inner wall, and hot pressing is performed for 10-20 minutes. The hot pressing pressure is 1.5-2.3 MPa and the hot pressing temperature is 100-120℃.
[0019] More preferably, the release agent is polyethylene glycol.
[0020] An environmentally friendly anti-splash paint bucket material is prepared using the above-mentioned method for preparing environmentally friendly anti-splash paint bucket materials.
[0021] Beneficial effects:
[0022] 1. This invention removes impurities such as cement and carbonate from sepiolite fibers, enabling the channels within the activated sepiolite crystals to connect. Under the action of surfactants, methyl acrylate and ethylenediamine are grafted onto the surface of the activated sepiolite fibers, forming a unique organic dendritic molecular structure. The ends of the dendritic molecular structure have a large number of amino groups, which can be grafted with graphene oxide and polylactic acid under thermosetting conditions, thereby cross-linking to form a dense structure. This not only greatly enhances the corrosion resistance of the paint bucket, but also provides high impact strength and long-term durability.
[0023] 2. Due to the poor flexibility of high-density polyethylene molecular chains, this invention uses high-density polyethylene and polylactic acid as base materials. Polylactic acid is incorporated into the molecular structure of high-density polyethylene, which can effectively enhance the impact resistance of the paint bucket material. At the same time, it is easy to degrade and has good environmental protection effect. Furthermore, grafted sepiolite and graphene oxide are dispersed in it, which greatly improves the affinity between its molecular structure and oil-based paint, making it less prone to splashing. Attached Figure Description
[0024] Figure 1 This is a comparison diagram of the mechanical properties of the paint bucket materials obtained in Example 5 and Comparative Examples 1-3.
[0025] Figure 2 This is a comparison chart of the corrosion rate and paint loss rate of the paint bucket materials obtained in Example 5 and Comparative Examples 1-3. Detailed Implementation
[0026] The present invention will be further explained below with reference to specific embodiments.
[0027] Example 1
[0028] A method for preparing an environmentally friendly anti-splash paint bucket material includes the following steps:
[0029] S1. Add 5 kg of sepiolite to 20 kg of water, stir at 40℃ for 1 h, let stand for 1 h, adjust the pH of the system to 2-4 with 2 mol / L sulfuric acid solution, sonicate for 1 h at 5 kHz, add 0.1 kg of coupling agent KH550, stir at 50℃ for 1 h at 100 r / min, wash with deionized water, dry, and pulverize.
[0030] 5 kg of activated sepiolite and 0.1 kg of dodecyl dimethyl betaine were added to 30 kg of methanol and stirred at 1000 r / min for 10 min. While stirring, 1 kg of methyl acrylate was added dropwise and stirred for 10 h. Then, 1 kg of ethylenediamine was added and stirring was continued for 10 h. The mixture was filtered, washed, and dried to obtain grafted sepiolite.
[0031] S2. Add 50kg of high-density polyethylene and 1kg of polylactic acid to a high-speed mixer, then add 5kg of grafted sepiolite, 1kg of graphene oxide, 10kg of montmorillonite, 0.3kg of microcrystalline wax, and 0.7kg of antioxidant 1010 in sequence. Stir at 100r / min for 10min at a stirring temperature of 40℃. Add the mixture to an extruder for melt mixing, extrusion, cooling and pelletizing, and then add the pellets to a hot press mold with polyethylene glycol coated on the inner wall. Hot press for 10min at a pressure of 1.5MPa and a temperature of 100℃ to obtain an environmentally friendly anti-splatter coating bucket material.
[0032] Example 2
[0033] A method for preparing an environmentally friendly anti-splash paint bucket material includes the following steps:
[0034] S1. Add 15kg of sepiolite to 40kg of water, stir at 50℃ for 3h, let stand for 5h, adjust the pH of the system to 2-4 with 4mol / L sulfuric acid solution, sonicate for 2h at 12kHz, add 1kg of coupling agent KH550, stir at 80℃ for 2h at 400r / min, wash with deionized water, dry, and pulverize.
[0035] 10 kg of activated sepiolite and 1 kg of hexadecyltrimethylammonium bromide were added to 60 kg of methanol and stirred at 2000 r / min for 30 min. While stirring, 5 kg of methyl acrylate was added dropwise and stirred for 20 h. Then, 5 kg of ethylenediamine was added and stirring was continued for 20 h. The mixture was filtered, washed, and dried to obtain grafted sepiolite.
[0036] S2. Add 120 kg of high-density polyethylene and 5 kg of polylactic acid to a high-speed mixer. Then, add 15 kg of grafted sepiolite, 5 kg of graphene oxide, 20 kg of montmorillonite, 1.5 kg of microcrystalline wax, and 1.5 kg of antioxidant 1010 in sequence. Stir at 500 r / min for 30 min at a stirring temperature of 60°C. Add the mixture to an extruder for melt mixing, extrusion, cooling, and pelletizing. Add the pellets to a hot press mold with polyethylene glycol coated on the inner wall. Hot press for 20 min at a pressure of 2.3 MPa and a temperature of 120°C to obtain an environmentally friendly anti-splatter coating bucket material.
[0037] Example 3
[0038] A method for preparing an environmentally friendly anti-splash paint bucket material includes the following steps:
[0039] S1. Add 8 kg of sepiolite to 35 kg of water, stir at 42℃ for 2.5 h, let stand for 2 h, adjust the pH of the system to 2-4 with 3.5 mol / L sulfuric acid solution, sonicate for 80 min at 10 kHz, add 0.2 kg of coupling agent KH550, stir at 70℃ for 80 min at 300 r / min, wash with deionized water, dry, and pulverize.
[0040] 6 kg of activated sepiolite and 0.8 kg of quaternary ammonium salt-type gemini surfactant CG12-2-12 were added to 40 kg of methanol and stirred at 1800 r / min for 15 min. While stirring, 4 kg of methyl acrylate was added dropwise and stirred for 12 h. Then, 4 kg of ethylenediamine was added and stirring was continued for 13 h. The mixture was filtered, washed, and dried to obtain grafted sepiolite.
[0041] S2. Add 100kg of high-density polyethylene and 2kg of polylactic acid to a high-speed mixer, then add 12kg of grafted sepiolite, 2kg of graphene oxide, 18kg of montmorillonite, 1kg of oxidized polyethylene wax, and 0.5kg of antioxidant 1010 in sequence. Stir at 400r / min for 15min at a stirring temperature of 55℃. Add the mixture to an extruder for melt mixing, extrusion, cooling and pelletizing, and then add the pellets to a hot press mold with polyethylene glycol coated on the inner wall. Hot press for 12min at a pressure of 2MPa and a temperature of 105℃ to obtain an environmentally friendly anti-splash coating bucket material.
[0042] Example 4
[0043] A method for preparing an environmentally friendly anti-splash paint bucket material includes the following steps:
[0044] S1. Add 12 kg of sepiolite to 25 kg of water, stir at 48℃ for 1.5 h, let stand for 4 h, adjust the pH of the system to 2-4 with 2.5 mol / L sulfuric acid solution, sonicate for 100 min at 6 kHz, add 0.8 kg of coupling agent KH550, stir at 60℃ for 100 min at 200 r / min, wash with deionized water, dry, and pulverize.
[0045] 8 kg of activated sepiolite and 0.2 kg of quaternary ammonium salt type gemini surfactant CG12-2-12 were added to 50 kg of methanol and stirred at 1200 r / min for 25 min. While stirring, 2 kg of methyl acrylate was added dropwise and stirred for 18 h. Then, 2 kg of ethylenediamine was added and stirring was continued for 17 h. The mixture was filtered, washed, and dried to obtain grafted sepiolite.
[0046] S2. Add 80kg of high-density polyethylene and 4kg of polylactic acid to a high-speed mixer, then add 8kg of grafted sepiolite, 4kg of graphene oxide, 12kg of montmorillonite, 2kg of oxidized polyethylene wax, and 0.5kg of antioxidant 1010 in sequence. Stir at 200r / min for 25min at a stirring temperature of 45℃. Add the mixture to an extruder for melt mixing, extrusion, cooling and pelletizing, and then add the pellets to a hot press mold with polyethylene glycol coated on the inner wall. Hot press for 18min at a pressure of 1.8MPa and a temperature of 115℃ to obtain an environmentally friendly anti-splash coating bucket material.
[0047] Example 5
[0048] A method for preparing an environmentally friendly anti-splash paint bucket material includes the following steps:
[0049] S1. Add 10 kg of sepiolite to 30 kg of water, stir at 45℃ for 2 h, let stand for 3 h, adjust the pH of the system to 3 with 3 mol / L sulfuric acid solution, sonicate for 90 min at 8 kHz, add 0.5 kg of coupling agent KH550, stir at 65℃ for 90 min at 250 r / min, wash with deionized water, dry, and pulverize.
[0050] 7 kg of activated sepiolite and 0.5 kg of quaternary ammonium salt type gemini surfactant CG12-2-12 were added to 45 kg of methanol and stirred at 1500 r / min for 20 min. While stirring, 3 kg of methyl acrylate was added dropwise and stirred for 15 h. Then, 3 kg of ethylenediamine was added and stirring was continued for 15 h. The mixture was filtered, washed, and dried to obtain grafted sepiolite.
[0051] S2. Add 90kg of high-density polyethylene and 3kg of polylactic acid to a high-speed mixer, then add 10kg of grafted sepiolite, 3kg of graphene oxide, 15kg of montmorillonite, 1kg of oxidized polyethylene wax, and 1kg of antioxidant 1010 in sequence. Stir at 300r / min for 20min at a stirring temperature of 50℃. Add the mixture to an extruder for melt mixing, extrusion, cooling and pelletizing, and then add the pellets to a hot press mold with polyethylene glycol coated on the inner wall. Hot press for 15min at a pressure of 1.9MPa and a temperature of 110℃ to obtain an environmentally friendly anti-splash coating bucket material.
[0052] Comparative Example 1
[0053] The paint buckets used are made by a company in Suzhou.
[0054] Comparative Example 2
[0055] A method for preparing a paint bucket material includes the following steps: 90 kg of high-density polyethylene and 3 kg of polylactic acid are added to a high-speed mixer, followed by the sequential addition of 10 kg of sepiolite, 3 kg of graphene oxide, 15 kg of montmorillonite, 1 kg of polyethylene oxide wax, and 1 kg of antioxidant 1010. The mixture is stirred at 300 r / min for 20 min at a stirring temperature of 50°C. The mixture is then added to an extruder for melt mixing, extruded, cooled, and pelletized. The pellets are then added to a hot press mold with a polyethylene glycol inner wall, and hot-pressed for 15 min at a pressure of 1.9 MPa and a temperature of 110°C to obtain the paint bucket material.
[0056] Comparative Example 3
[0057] A method for preparing an environmentally friendly anti-splash paint bucket material includes the following steps:
[0058] S1. Add 10 kg of sepiolite to 30 kg of water, stir at 45℃ for 2 h, let stand for 3 h, adjust the pH of the system to 3 with 3 mol / L sulfuric acid solution, sonicate for 90 min at 8 kHz, add 0.5 kg of coupling agent KH550, stir at 65℃ for 90 min at 250 r / min, wash with deionized water, dry, and pulverize.
[0059] 7 kg of activated sepiolite and 0.5 kg of quaternary ammonium salt type gemini surfactant CG12-2-12 were added to 45 kg of methanol and stirred at 1500 r / min for 20 min. While stirring, 3 kg of methyl acrylate was added dropwise and stirred for 15 h. Then, 3 kg of ethylenediamine was added and stirring was continued for 15 h. The mixture was filtered, washed, and dried to obtain grafted sepiolite.
[0060] S2. Add 90kg of high-density polyethylene and 3kg of polylactic acid to a high-speed mixer, then add 10kg of grafted sepiolite, 18kg of montmorillonite, 1kg of oxidized polyethylene wax, and 1kg of antioxidant 1010 in sequence. Stir at 300r / min for 20min at a stirring temperature of 50℃. Add the mixture to an extruder for melt mixing, extrusion, cooling, and pelletizing. Add the pellets to a hot press mold with polyethylene glycol coated on the inner wall, and hot press for 15min at a pressure of 1.9MPa and a temperature of 110℃ to obtain an environmentally friendly anti-splash coating bucket material.
[0061] Referring to GB / T 1040.2-2022 "Determination of tensile properties of plastics - Part 2: Test conditions for molded and extruded plastics", the paint bucket materials obtained in Example 5 and Comparative Examples 1-3 were tested using an electronic universal testing machine. The sample size was 160mm×5mm×2mm dumbbell shape, the tensile rate was 50mm / min, the test environment was room temperature, and the average value was calculated after testing 5 samples.
[0062] Referring to the A-notch specification in GB / T 1843-2008 "Determination of Impact Strength of Plastic Cantilever Beams", the paint bucket materials obtained in Example 5 and Comparative Examples 1-3 were tested using an electronic universal testing machine. The average value was calculated after testing 5 samples.
[0063] Referring to GB / T 9341-2008 "Determination of Flexural Properties of Plastics", the paint bucket materials obtained in Example 5 and Comparative Examples 1-3 were tested using an electronic universal testing machine. The sample size was 160mm×10mm×4mm, the tensile rate was 2mm / min, and the test environment was room temperature. The average value was calculated after testing 5 samples.
[0064] like Figure 1As shown, the paint bucket material obtained in Example 5 exhibits the best mechanical properties, possessing excellent tensile and flexural strength, and high impact resistance. The applicant believes this is because the invention uses high-density polyethylene and polylactic acid as base materials. The polylactic acid is incorporated into the high-density polyethylene molecular structure, effectively enhancing the mechanical strength of the paint bucket material. Furthermore, the grafted sepiolite surface forms an organic dendritic molecular structure with terminal amino groups, which, under thermosetting conditions, grafts with graphene oxide and polylactic acid, cross-linking to form a dense structure, further improving the mechanical properties of the paint bucket material.
[0065] The paint bucket materials obtained in Example 5 and Comparative Examples 1-3 were immersed in a 20% sulfuric acid solution for 168 hours, weighed, and the acid corrosion rate was calculated. The paint bucket materials obtained in Example 5 and Comparative Examples 1-3 were also immersed in a 20% sodium hydroxide solution for 168 hours, weighed, and the alkali corrosion rate was calculated.
[0066] Paint buckets of the same size were made using the paint bucket materials obtained in Example 5 and Comparative Examples 1-3. These buckets were then used to fill with rust-proof and corrosion-resistant epoxy resin paint (oil-based paint) for equipment pipelines sold by Shandong Mouchuang Environmental Protection Materials Co., Ltd. The paint was filled to 90% of the bucket capacity, and the buckets were rotated at 60 r / min for 1 hour to observe the paint loss rate.
[0067] like Figure 2 As shown, the paint bucket material obtained in Example 5 exhibits the best anti-corrosion performance and the lowest paint loss rate. This confirms that the paint bucket material obtained by the present invention has excellent long-term anti-corrosion performance, and its molecular structure has a significantly improved affinity with oil-based paints, making it less prone to splashing.
[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A method for preparing an environmentally friendly anti-splash paint bucket material, characterized in that, Includes the following steps: S1. Activate sepiolite; add activated sepiolite and surfactant into methanol and stir for 10-30 min. While stirring, add methyl acrylate dropwise and stir for 10-20 h. Add ethylenediamine and continue stirring. Filter, wash and dry to obtain grafted sepiolite. S2. Mix high-density polyethylene and polylactic acid, then add grafted sepiolite, graphene oxide, montmorillonite, and processing aids and stir for 10-30 minutes at a stirring temperature of 40-60℃. Melt and knead, extrude, pelletize, and hot press to obtain environmentally friendly anti-splatter coating bucket material.
2. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 1, characterized in that, In S1, the surfactant is at least one of dodecyl dimethyl betaine, hexadecyl trimethylammonium bromide, and quaternary ammonium salt type gemini surfactant CG12-2-12.
3. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 1, characterized in that, In S1, the mass ratio of activated sepiolite, surfactant, methyl acrylate, and ethylenediamine is 5-10: 0.1-1：1-5：1-5。 4. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 1, characterized in that, In S1, the specific operation of sepiolite activation treatment is as follows: add sepiolite to water, stir at 40-50℃ for 1-3 hours, let stand for 1-5 hours, adjust the pH of the system to 2-4, sonicate, add coupling agent KH550, stir at 50-80℃ for 1-2 hours, wash, dry, and pulverize.
5. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 4, characterized in that, The mass ratio of sepiolite to coupling agent KH550 is 5-15:0.1-1.
6. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 4, characterized in that, The ultrasonic treatment time is 1-2 hours, and the ultrasonic frequency is 5-12 kHz.
7. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 4, characterized in that, The pH of the system was adjusted to 2-4 using a 2-4 mol / L sulfuric acid solution.
8. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 1, characterized in that, In S2, the number average molecular weight of high-density polyethylene is 6400-11000.
9. The method for preparing the environmentally friendly anti-splash coating bucket material according to claim 1, characterized in that, In S2, the mass ratio of high-density polyethylene, polylactic acid, grafted sepiolite, graphene oxide, montmorillonite, and processing aids is 50-120:1-5:5-15:1-5:10-20:1-3.
10. An environmentally friendly anti-splash paint bucket material, characterized in that, The material is prepared using the method described in any one of claims 1-9 for preparing the environmentally friendly anti-splash coating bucket.