Liquid antibacterial functional master batch as well as preparation and application thereof

Abstract

The invention discloses a liquid antibacterial functional master batch as well as preparation and application thereof. The liquid antibacterial functional master batch comprises the following components in parts by weight: 20-80 parts of an antibacterial agent, 0-25 parts of a pigment, 3-10 parts of a dispersing agent, 0-5 parts of an antioxidant and 20-80 parts of a carrier. The preparation method of the liquid antibacterial functional master batch comprises the following steps: putting the raw materials in parts by weight into a high-speed homogenizing mixer, and uniformly stirring to obtain the liquid antibacterial color master batch. The liquid antibacterial functional master batch is simple in preparation process, wide in application applicability, convenient to use, remarkable in antibacterial effect and small in influence on physical properties such as mechanical properties of rubber materials.

Description

Technical Field

[0001] The invention belongs to the field of functional masterbatches, and in particular relates to a liquid antibacterial functional masterbatch and preparation and application thereof. Background Art

[0002] People are becoming more and more aware of virus protection, and have higher and higher requirements for the plastic products they come into contact with in daily life. Plastics and products with antibacterial functions are becoming more and more popular.

[0003] Masterbatch is a coloring particle prepared by loading an extraordinary amount of pigment into a resin. The color performance of the masterbatch is tailored to the needs of the customer's products. Generally, the use of masterbatch has better pigment dispersion, convenient and simple mixing of ingredients, smooth feeding and conveying, easy to control, and effectively ensures production efficiency.

[0004] Since the preparation of masterbatches requires a resin carrier, the carrier used must match the target plastic. If the customer changes the rubber compound, the corresponding masterbatch must be re-prepared, which prolongs the time it takes to launch new products and harms the interests of customers. Even if the customer uses the same rubber compound and only changes the brand, it still takes a long time to explore the process and explore the changes in the physical properties of the product caused by the difference in compatibility between the masterbatch and the rubber compound. This not only consumes a lot of rubber, but also takes a long time. In particular, for masterbatches with antibacterial functions, it is necessary to consider the compatibility of the antibacterial agent with the target rubber compound and the compatibility of the masterbatch carrier with the target rubber compound, making the customer switching process more complicated, and greatly increasing the economic and time costs. Summary of the invention

[0005] In order to reduce the large amount of time and economic costs caused by customers switching rubber materials due to traditional antibacterial masterbatches, the primary purpose of the present invention is to provide a liquid antibacterial functional masterbatch to greatly improve the applicability of the antibacterial functional masterbatch.

[0006] Another object of the present invention is to provide a method for preparing the above-mentioned liquid antibacterial functional masterbatch.

[0007] Another object of the present invention is to provide an application of the above-mentioned liquid antibacterial functional masterbatch.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] A liquid antibacterial functional masterbatch, comprising the following components by weight:

[0010] 20-80 parts of carrier, 20-80 parts of antibacterial agent, 3-10 parts of dispersant.

[0011] Preferably, the liquid antibacterial functional masterbatch comprises the following components in parts by mass:

[0012] 44-70 parts of carrier, 20-50 parts of antibacterial agent, 5-7 parts of dispersant.

[0013] Preferably, the carrier is at least one of a plasticizer, a liquid oligomer, a vegetable oil and a mineral oil.

[0014] More preferably, the carrier is at least one of acrylic liquid polymer, phthalic polyester plasticizer, dioctyl terephthalate, di(2-ethylhexyl) sebacate, di(2-ethylhexyl) adipate, trioctyl trimellitate, tricresyl phosphate, trioctyl phosphate, epoxidized fatty acid ester and epoxytetrahydrophthalic acid di(2-ethylhexyl) ester.

[0015] More preferably, the carrier is at least one of dioctyl terephthalate and trioctyl trimellitate.

[0016] Preferably, the antibacterial agent is at least one of an inorganic antibacterial agent and an organic antibacterial agent.

[0017] More preferably, the inorganic antibacterial agent is at least one of silver ions, copper ions and zinc ions.

[0018] More preferably, the organic antibacterial agent is at least one of quaternary ammonium salts, quaternary phosphonium salts, guanidine salts, alcohols, phenols, thiophenes, organic acids, pyridinones and organometallic copolymers.

[0019] More preferably, the antibacterial agent is at least one of 2-butyl-1,2-benzisothiazolin-3-one and silver ions.

[0020] Preferably, the dispersant is at least one of stearic acid, zinc stearate, calcium stearate, lead stearate, barium stearate, n-butyl stearate, monoglyceride stearate, triglyceride stearate, pentaerythritol stearate, stearamide, ethylene bis stearamide, oleamide, erucamide, behenamide, silanes, titanates, aluminates, phosphates, zirconates, stannates, organic complexes and borides.

[0021] More preferably, the dispersant is at least one of stearic acid, zinc stearate and erucamide.

[0022] Preferably, the liquid antibacterial functional masterbatch comprises 0-25 parts of pigment by weight; more preferably, 0-2 parts of pigment.

[0023] More preferably, the pigment is at least one of an organic pigment and an inorganic pigment.

[0024] More preferably, the organic pigment is at least one of phthalocyanine red, phthalocyanine blue, phthalocyanine green, light-fast red, macromolecular red, macromolecular yellow, permanent yellow, permanent violet and azo red.

[0025] More preferably, the inorganic pigment is at least one of cobalt blue, chromium oxide green, cadmium red, chrome yellow, titanium dioxide, carbon black, iron oxide red and iron oxide yellow.

[0026] More preferably, the pigment is phthalocyanine blue.

[0027] Preferably, the liquid antibacterial functional masterbatch comprises 0-5 parts of antioxidant by weight; more preferably 0-1 part of antioxidant.

[0028] More preferably, the antioxidant is at least one of hindered phenol antioxidants, phosphite antioxidants, amine antioxidants, sulfur-containing antioxidants and metal salt antioxidants.

[0029] More preferably, the antioxidant is antioxidant 1010.

[0030] The method for preparing the above-mentioned liquid antibacterial functional masterbatch comprises the following steps:

[0031] All raw materials are put into a homogenizing mixer according to the proportions and mixed evenly to obtain a liquid antibacterial functional masterbatch.

[0032] Preferably, the homogenizing mixer operates at a speed of 800-1600 r / min, an operating time of 30-90 min, and an operating temperature of 15-85°C.

[0033] More preferably, the homogenizing mixer operates at a speed of 1400-1600 r / min, an operating time of 60-90 min, and an operating temperature of 25-45°C.

[0034] The above-mentioned liquid antibacterial functional masterbatch is used in plastics and their products.

[0035] Preferably, the application is that the mass percentage of the liquid antibacterial functional masterbatch in the plastic is 0.1-5%; more preferably 1-4%.

[0036] Preferably, the plastic is at least one of PE, PP, PVC, PS, ABS, AS, MBS, PMMA, PA, EVA, POE, POM, PET, PBT, PC and alloys; more preferably, it is at least one of PE, PP, ABS, PET and PC.

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

[0038] The present invention utilizes a simple method to prepare a liquid antibacterial masterbatch, which is in a liquid state, can be easily fully mixed with various plastic particles, has wide applicability, good dispersibility, strong tinting power, excellent antibacterial performance, and little effect on the physical properties of plastic products, thereby greatly reducing the time cost and economic cost of customers switching rubber materials. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0040] If no specific conditions are specified in the examples of the present invention, the experiments were carried out under conventional conditions or conditions recommended by the manufacturer. All raw materials, reagents, etc., whose manufacturers are not specified, are conventional products that can be purchased commercially.

[0041] The contents in the following examples and comparative examples are all parts by weight.

[0042] Example 1

[0043] 50 parts of antibacterial agent 2-butyl-1,2-benzisothiazolin-3-one, 0 parts of pigment, 5 parts of dispersant zinc stearate, 1 part of hindered phenol antioxidant (antioxidant 1010), and 44 parts of carrier dioctyl terephthalate are placed in a high-speed homogenizer and stirred at 1400 r / min for 60 minutes at an operating temperature of 25°C. After mixing evenly, they are packaged to obtain a liquid antibacterial masterbatch. The liquid antibacterial masterbatch is added to the PE rubber material at a ratio of 1% by mass of PE (CNOOC Shell 2420H), and after shaking, it is injection molded into sample plates and strips at 170°C on an injection molding machine.

[0044] Example 2

[0045] The liquid antibacterial masterbatch is the same as in Example 1. The liquid antibacterial masterbatch is added to the PP rubber material at a ratio of 1.4% by mass of PP (Sinopec PP700). After being shaken well, it is injection molded into sample plates and strips at 200° C. in an injection molding machine.

[0046] Example 3

[0047] The liquid antibacterial masterbatch is the same as in Example 1. The liquid antibacterial masterbatch is added to the ABS rubber material at a ratio of 1% by mass of ABS (LG Chemical ABS121H). After being shaken well, it is injection molded into sample plates and sample strips at 200° C. in an injection molding machine.

[0048] Example 4

[0049] The liquid antibacterial masterbatch is the same as in Example 1. The liquid antibacterial masterbatch is added to the PC rubber material at a ratio of 2.4% by weight of PC (Covestro PC2405). After being shaken well, it is injection molded into sample plates and strips at 260° C. on an injection molding machine.

[0050] Example 5

[0051] The liquid antibacterial masterbatch is the same as in Example 1. The liquid antibacterial masterbatch is added to the PET rubber material at a ratio of 2% by mass of PET (Yisheng YS-W01), and after being shaken well, it is injection molded into sample plates and strips at 280° C. on an injection molding machine.

[0052] Example 6

[0053] 20 parts of silver ion antibacterial agent (Ishizuka Glass SR-T-104), 2 parts of pigment phthalocyanine blue, 5 parts of dispersant zinc stearate, 2 parts of erucic acid amide, 1 part of hindered phenol antioxidant (antioxidant 1010), 40 parts of carrier dioctyl terephthalate and 30 parts of trioctyl trimellitate were placed in a high-speed homogenizer and stirred at 1600 r / min for 90 minutes at an operating temperature of 45°C. After mixing evenly, the liquid antibacterial masterbatch was packaged to obtain a liquid antibacterial masterbatch. The liquid antibacterial masterbatch was added to PE (CNOOC Shell 2420H) rubber material at a ratio of 2% of the mass of PE, and after shaking, it was injection molded into samples and strips at 170°C on an injection molding machine.

[0054] Example 7

[0055] The liquid antibacterial masterbatch is the same as in Example 6. The liquid antibacterial masterbatch is added to the PP rubber material at a ratio of 2.2% by mass of PP (Sinopec PP700). After being shaken well, it is injection molded into sample plates and strips at 200° C. on an injection molding machine.

[0056] Example 8

[0057] The liquid antibacterial masterbatch is the same as in Example 6. The liquid antibacterial masterbatch is added to the ABS rubber material at a ratio of 2% by mass of ABS (LG Chemical ABS121H). After being shaken well, it is injection molded into sample plates and sample strips at 200° C. in an injection molding machine.

[0058] Example 9

[0059] The liquid antibacterial masterbatch is the same as in Example 6. The liquid antibacterial masterbatch is added to the PC rubber material at a ratio of 4% by mass of PC (Covestro PC2405), and after being shaken well, it is injection molded into sample plates and sample strips at 260° C. on an injection molding machine.

[0060] Example 10

[0061] The liquid antibacterial masterbatch is the same as in Example 6. The liquid antibacterial masterbatch is added to the PET rubber material at a ratio of 4% by mass of PET (Yisheng YS-W01), and after being shaken well, it is injection molded into sample plates and strips at 280° C. on an injection molding machine.

[0062] Comparative Example 1

[0063] The same PE (CNOOC Shell 2420H) rubber compound used in Example 1 was placed in an injection molding machine at 170° C. and injection molded into sample plates and strips.

[0064] Comparative Example 2

[0065] The same PP (Sinopec PP700) rubber used in Example 2 was placed in an injection molding machine at 200° C. and injection molded into sample plates and strips.

[0066] Comparative Example 3

[0067] The same ABS (LG Chemical ABS121H) rubber used in Example 3 was placed in an injection molding machine at 200° C. and injection molded into sample plates and strips.

[0068] Comparative Example 4

[0069] The same PC (Covestro PC2405) rubber used in Example 4 was placed in an injection molding machine at 260° C. and injection molded into sample plates and strips.

[0070] Comparative Example 5

[0071] The same PET (Yisheng YS-W01) rubber material used in Example 5 was placed in an injection molding machine at 280°C for injection molding into sample plates and strips.

[0072] The test of antibacterial rate of Escherichia coli and Staphylococcus aureus refers to GB21551.2-2010;

[0073] The test of tensile strength refers to GB / T 1040.1-2018;

[0074] The impact strength test refers to GB / T 1843-2008;

[0075] The test of light transmittance refers to GB / T 2410-2008.

[0076] Table 1 Performance indicators of Examples 1 to 10 and Comparative Examples 1 to 5

[0077]

[0078]

[0079] From the performance difference between the above comparative example and the embodiment, it can be seen that the liquid antibacterial masterbatch of the present invention has excellent antibacterial performance and strong applicability. It can show good antibacterial properties in a variety of rubber materials such as PE, PP, ABS, PC, PET, etc., and the physical properties such as tensile strength, impact strength, and light transmittance of the rubber material added with the liquid antibacterial masterbatch of the present invention have a high retention rate. This is mainly due to the fact that the liquid antibacterial masterbatch of the present invention is in a liquid state and can be fully mixed with the rubber material, so that the antibacterial agent, pigment, etc. can be well dispersed in the rubber material, so that the relevant properties are kept better.

[0080] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A liquid antibacterial functional masterbatch, characterized in that: By mass, it includes the following components: 20-80 parts of carrier, 20-80 parts of antibacterial agent, 3-10 parts of dispersant.

2. The liquid antibacterial functional masterbatch according to claim 1, characterized in that: By mass, it includes the following components: 44-70 parts of carrier, 20-50 parts of antibacterial agent, 5-7 parts of dispersant.

3. A liquid antibacterial functional masterbatch according to claim 1 or 2, characterized in that: The carrier is at least one of a plasticizer, a liquid oligomer, a vegetable oil and a mineral oil; The antibacterial agent is at least one of an inorganic antibacterial agent and an organic antibacterial agent.

4. The liquid antibacterial functional masterbatch according to claim 3, characterized in that: The carrier is at least one of acrylic liquid polymer, phthalic acid polyester plasticizer, dioctyl terephthalate, di(2-ethylhexyl) sebacate, di(2-ethylhexyl) adipate, trioctyl trimellitate, tricresyl phosphate, trioctyl phosphate, epoxidized fatty acid ester and epoxy tetrahydrophthalic acid di(2-ethylhexyl) ester; The inorganic antibacterial agent is at least one of silver ions, copper ions and zinc ions; The organic antibacterial agent is at least one of quaternary ammonium salts, quaternary phosphonium salts, guanidine salts, alcohols, phenols, thiophenes, organic acids, pyridinones and organometallic copolymers; The dispersant is at least one of stearic acid, zinc stearate, calcium stearate, lead stearate, barium stearate, n-butyl stearate, monoglyceride stearate, triglyceride stearate, pentaerythritol stearate, stearamide, ethylene bis stearamide, oleamide, erucamide, behenamide, silanes, titanates, aluminates, phosphates, zirconates, stannates, organic complexes and borides.

5. The liquid antibacterial functional masterbatch according to claim 4, characterized in that: The carrier is at least one of dioctyl terephthalate and trioctyl trimellitate; The antibacterial agent is at least one of 2-butyl-1,2-benzisothiazolin-3-one and silver ions; The dispersant is at least one of stearic acid, zinc stearate and erucamide.

6. The liquid antibacterial functional masterbatch according to claim 1 or 2, characterized in that: Calculated by weight, including 0-25 parts of pigment; The pigment is at least one of an organic pigment and an inorganic pigment; The organic pigment is at least one of phthalocyanine red, phthalocyanine blue, phthalocyanine green, fast red, macromolecular red, macromolecular yellow, permanent yellow, permanent violet and azo red; The inorganic pigment is at least one of cobalt blue, chromium oxide green, cadmium red, chrome yellow, titanium dioxide, carbon black, iron oxide red and iron oxide yellow; Including 0-5 parts of antioxidant; The antioxidant is at least one of hindered phenol antioxidants, phosphite antioxidants, amine antioxidants, sulfur-containing antioxidants and metal salt antioxidants.

7. The liquid antibacterial functional masterbatch according to claim 6, characterized in that: Calculated by weight, including 0-2 parts of pigment; The pigment is phthalocyanine blue; Including 0-1 part of antioxidant; The antioxidant is antioxidant 1010.

8. A method for preparing a liquid antibacterial functional masterbatch according to any one of claims 1 to 7, characterized in that: The following steps are involved: Put all the raw materials into a homogenizer according to the proportion and mix them evenly to obtain a liquid antibacterial functional masterbatch; The homogenizing mixer has an operating speed of 800-1600 r / min, an operating time of 30-90 min, and an operating temperature of 15-85° C.

9. Use of the liquid antibacterial functional masterbatch according to any one of claims 1 to 7 in plastics and plastic products thereof.

10. The use according to claim 9, characterized in that: The mass percentage of the liquid antibacterial functional masterbatch according to any one of claims 1 to 7 in the plastic is 0.1-5%; The plastic is at least one of PE, PP, PVC, PS, ABS, AS, MBS, PMMA, PA, EVA, POE, POM, PET, PBT, PC and alloys; Alternatively, the mass percentage of the liquid antibacterial functional masterbatch according to any one of claims 1 to 7 in the plastic is 1-4%; The plastic is at least one of PE, PP, ABS, PET and PC.

Images