Antibacterial wear-resistant ABS composite material and preparation method thereof

Abstract

The invention discloses an antibacterial and wear-resistant ABS (acrylonitrile butadiene styrene) composite material and a preparation method thereof, and the antibacterial and wear-resistant ABS composite material comprises the following components in parts by weight: 95-105 parts of ABS, 8-12 parts of a wear-resistant and antibacterial filler and 0.1-0.5 part of an antioxidant. The preparation method of the ABS composite material comprises the following steps: weighing the ABS, the wear-resistant antibacterial filler and the antioxidant in certain parts by weight, mixing and uniformly stirring to obtain a mixture; and extruding and granulating the obtained mixture to obtain the antibacterial wear-resistant ABS composite material. The antibacterial wear-resistant ABS composite material provided by the invention has good antibacterial performance and wear resistance, and solves the technical problems of limited antibacterial performance and wear resistance of ABS in the prior art.

Description

Technical Field

[0001] This invention relates to the field of composite material technology, and in particular to an antibacterial and wear-resistant ABS composite material and its preparation method. Background Technology

[0002] Acrylonitrile-butadiene-styrene (ABS) is one of the most widely used plastics in modern times due to its low price, excellent performance, wide availability, and ease of processing. In certain specific applications, ABS requires antibacterial and abrasion-resistant properties, which ordinary ABS composites cannot meet.

[0003] For this reason, the present invention provides an antibacterial and wear-resistant ABS composite material and its preparation method. This material has not been reported to date, which greatly expands the application range of ABS composite materials and has very important practical significance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an antibacterial and wear-resistant ABS composite material and its preparation method. The composite material has excellent antibacterial and wear-resistant properties, which solves the technical problem of limited antibacterial and wear-resistant properties of ABS in the prior art.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solution:

[0006] An antibacterial and wear-resistant ABS composite material comprises the following components in parts by weight: 95-105 parts ABS, 8-12 parts wear-resistant and antibacterial filler, and 0.1-0.5 parts antioxidant.

[0007] Preferably, the above technical solution includes the following components by weight: 100 parts ABS, 10 parts wear-resistant and antibacterial filler, and 0.3 parts antioxidant.

[0008] Preferably, in the above technical solution, the wear-resistant and antibacterial filler is SrF2@Bi2O3.

[0009] Preferably, in the above technical solution, the wear-resistant and antibacterial filler is prepared by the following method:

[0010] (1) Weigh a certain amount of strontium chloride, ammonium fluoride, anhydrous ethanol and deionized water, add them to a reactor vessel, react at 40-60℃ for 6-8h, and cool to room temperature to obtain solution A;

[0011] (2) Filter, wash and dry solution A at 50-60℃ for 8-10 h to obtain strontium fluoride;

[0012] (3) Weigh a certain amount of strontium fluoride, bismuth nitrate, ammonia, anhydrous ethanol and deionized water, add them to a reactor vessel, react at 80-90℃ for 10-12h, filter, wash and dry at 60-70℃ for 5-7h to obtain solid B;

[0013] (4) Place solid B in a muffle furnace and calcine at 700-740℃ for 8-12 hours to obtain wear-resistant and antibacterial filler of type SrF2@Bi2O3.

[0014] Preferably, in the above technical solution, in step (1), the mass ratio of strontium chloride, ammonium fluoride, anhydrous ethanol and deionized water is (30-40): (30-36): (70-80): (80-100).

[0015] Preferably, in the above technical solution, in step (3), the mass ratio of strontium fluoride, bismuth nitrate, ammonia, anhydrous ethanol and deionized water is (20-30): (20-24): (10-16): (50-60): (80-90).

[0016] Preferably, in the above technical solution, the antioxidant is one or a mixture of several of BASF's tris(2,4-di-tert-butyl)phosphite (Irganox 168), pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (Irganox 1010), and 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxyphenyl)benzene (Irganox 1330).

[0017] A method for preparing an antibacterial and wear-resistant ABS composite material includes the following steps:

[0018] (1) Weigh a certain amount of ABS, wear-resistant antibacterial filler and antioxidant, mix and stir evenly to obtain a mixture;

[0019] (2) The mixture obtained above is extruded and granulated to obtain antibacterial and wear-resistant ABS composite material.

[0020] Preferably, in the above technical solution, the twin-screw extruder in step (2) includes six temperature zones arranged in sequence: zone 1 temperature 180-200℃, zone 2 temperature 240-260℃, zone 3 temperature 240-260℃, zone 4 temperature 240-260℃, zone 5 temperature 240-260℃, zone 6 temperature 240-260℃, and die head temperature 240-260℃; the screw speed is 200-280 r / min.

[0021] The above-described technical solution of the present invention has the following beneficial effects:

[0022] (1) The specific reaction equations involved in this patent are as follows:

[0023] SrCl₂ + 2NH₄F → SrF₂ + 2NH₄Cl

[0024] Bi 3+ +NO3 - +2OH - →BiONO3+H2O

[0025] 2BiONO3 + 2OH - →H₂O + 2NO₃ - +Bi2O3

[0026] (2) During the friction process of ABS composite material, SrF2 in SrF2@Bi2O3 is precipitated and forms a uniform and continuous lubricating film on the surface of ABS composite material, thereby reducing the friction force during the friction process. The reduction of friction force also effectively enhances the wear resistance of ABS composite material.

[0027] (3) The reactive oxygen species generated by Bi2O3 interact with bacteria, inducing initial oxidative damage to the cell membrane and cell wall, and even damaging the integrity of the cell membrane, making the bacteria more susceptible to heating. The permeability of the damaged bacterial cell membrane increases, making it more sensitive to heat, thereby accelerating the leakage of bacterial contents and destroying the bacteria, thus improving the antibacterial properties of ABS composite materials.

[0028] (4) The antibacterial and wear-resistant ABS composite material of the present invention has great promotional value. Detailed Implementation

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to them. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0030] Unless otherwise specified, the experimental methods used in the following examples are conventional methods, and the materials and reagents used are commercially available. Unless otherwise specified, the equipment used in the experiments is well known to those skilled in the art.

[0031] The raw materials used in the embodiments of the present invention are as follows:

[0032] ABS (model PA-757K), Zhenjiang Qimei Chemical Co., Ltd.; Strontium chloride, Langfang Pengcai Fine Chemical Co., Ltd.; Ammonium fluoride, Yixing Gaoyang Chemical Co., Ltd.; Bismuth nitrate, Shandong Yinglang Chemical Co., Ltd.; Deionized water, Jinan Yuanfei Weiye Chemical Co., Ltd.; Anhydrous ethanol, Jinan Mingfa Chemical Co., Ltd.; Ammonia water, Suzhou Lanyu Chemical Co., Ltd.; Antioxidants (models Irganox168, Irganox1010, Irganox1330), BASF AG, Germany.

[0033] Example 1

[0034] (I) Preparation of SrF2@Bi2O3 type wear-resistant and antibacterial filler:

[0035] (1) Weigh 300g of strontium chloride, 300g of ammonium fluoride, 700g of anhydrous ethanol and 800g of deionized water, add them to a reactor vessel, react at 40℃ for 6h, and cool to room temperature to obtain solution A.

[0036] (2) Filter, wash and dry solution A at 50°C for 8 hours to obtain strontium fluoride.

[0037] (3) Weigh 200g of strontium fluoride, 200g of bismuth nitrate, 100g of ammonia, 500g of anhydrous ethanol and 800g of deionized water, add them to a reactor vessel, react at 80℃ for 10h, filter, wash and dry at 60℃ for 5h to obtain solid B.

[0038] (4) Solid B was placed in a muffle furnace and calcined at 700°C for 8 hours to obtain wear-resistant and antibacterial filler M1 of type SrF2@Bi2O3.

[0039] (II) Preparation of ABS composite materials:

[0040] (1) Weigh 95 parts of ABS, 8 parts of wear-resistant and antibacterial filler M1, and 0.1 parts of antioxidant Irganox1010, mix and stir evenly to obtain a mixture;

[0041] (2) The mixture obtained in step (1) is extruded from the extruder and granulated to obtain ABS composite material P1.

[0042] The temperatures and screw speeds of the twin-screw extruder in each zone are as follows: Zone 1 temperature 180℃, Zone 2 temperature 240℃, Zone 3 temperature 240℃, Zone 4 temperature 240℃, Zone 5 temperature 240℃, Zone 6 temperature 240℃, Die head temperature 240℃, and screw speed 200r / min.

[0043] Example 2

[0044] (I) Preparation of SrF2@Bi2O3 type wear-resistant and antibacterial filler:

[0045] (1) Weigh 400g of strontium chloride, 360g of ammonium fluoride, 800g of anhydrous ethanol and 1.0kg of deionized water, add them to a reactor vessel, react at 60℃ for 8h, and cool to room temperature to obtain solution A.

[0046] (2) Filter, wash and dry solution A at 60°C for 10 h to obtain strontium fluoride.

[0047] (3) Weigh 300g of strontium fluoride, 240g of bismuth nitrate, 160g of ammonia, 600g of anhydrous ethanol and 900g of deionized water, add them to a reactor vessel, react at 90℃ for 12h, filter, wash and dry at 70℃ for 7h to obtain solid B.

[0048] (4) Solid B was placed in a muffle furnace and calcined at 740°C for 12 hours to obtain wear-resistant and antibacterial filler M2 of type SrF2@Bi2O3.

[0049] (II) Preparation of ABS composite materials:

[0050] (1) Weigh 105 parts of ABS, 12 parts of wear-resistant and antibacterial filler M2, 0.1 parts of Irganox1010, 0.2 parts of Irganox168, and 0.2 parts of Irganox1330, mix and stir evenly to obtain a mixture;

[0051] (2) The mixture obtained in step (1) is extruded from the extruder and granulated to obtain ABS composite material P2.

[0052] The temperatures and screw speeds of the twin-screw extruder in each zone are as follows: Zone 1 temperature 200℃, Zone 2 temperature 260℃, Zone 3 temperature 260℃, Zone 4 temperature 260℃, Zone 5 temperature 260℃, Zone 6 temperature 260℃, Die head temperature 260℃, and screw speed 280r / min.

[0053] Example 3

[0054] (I) Preparation of SrF2@Bi2O3 type wear-resistant and antibacterial filler:

[0055] (1) Weigh 350g of strontium chloride, 330g of ammonium fluoride, 750g of anhydrous ethanol and 900g of deionized water, add them to a reactor vessel, react at 50°C for 7h, and cool to room temperature to obtain solution A.

[0056] (2) Filter, wash and dry solution A at 55°C for 9 hours to obtain strontium fluoride.

[0057] (3) Weigh 250g of strontium fluoride, 220g of bismuth nitrate, 130g of ammonia, 550g of anhydrous ethanol and 850g of deionized water, add them to a reactor vessel, react at 85℃ for 11h, filter, wash and dry at 65℃ for 6h to obtain solid B.

[0058] (4) Solid B was placed in a muffle furnace and calcined at 720°C for 10 hours to obtain wear-resistant and antibacterial filler M3 of type SrF2@Bi2O3.

[0059] (II) Preparation of ABS composite materials:

[0060] (1) Weigh 100 parts of ABS, 10 parts of wear-resistant and antibacterial filler M3, 0.1 parts of Irganox168, and 0.2 parts of Irganox1010, mix and stir evenly to obtain a mixture;

[0061] (2) The mixture obtained in step (1) is extruded from the extruder and granulated to obtain ABS composite material P3.

[0062] The temperatures and screw speeds of the twin-screw extruder in each zone are as follows: Zone 1 temperature 190℃, Zone 2 temperature 250℃, Zone 3 temperature 250℃, Zone 4 temperature 250℃, Zone 5 temperature 250℃, Zone 6 temperature 250℃, and Die head temperature 250℃; screw speed 240r / min.

[0063] Example 4

[0064] (I) Preparation of SrF2@Bi2O3 type wear-resistant and antibacterial filler:

[0065] (1) Weigh 358g of strontium chloride, 333g of ammonium fluoride, 745g of anhydrous ethanol and 994g of deionized water, add them to a reactor vessel, react at 58℃ for 6.4h, and cool to room temperature to obtain solution A.

[0066] (2) Solution A was filtered, washed, and dried at 52°C for 9.2 h to obtain strontium fluoride.

[0067] (3) Weigh 266g of strontium fluoride, 238g of bismuth nitrate, 145g of ammonia, 555g of anhydrous ethanol and 838g of deionized water, add them to a reactor vessel, react at 82℃ for 10.6h, filter, wash and dry at 66℃ for 6.3h to obtain solid B.

[0068] (4) Solid B was placed in a muffle furnace and calcined at 730°C for 11 hours to obtain wear-resistant and antibacterial filler M4 of type SrF2@Bi2O3.

[0069] (II) Preparation of ABS composite materials:

[0070] (1) Weigh 98 parts of ABS, 11 parts of wear-resistant and antibacterial filler M4, 0.1 parts of Irganox1010, and 0.2 parts of Irganox1330, mix and stir evenly to obtain a mixture;

[0071] (2) The mixture obtained in step (1) is extruded from the extruder and granulated to obtain ABS composite material P4.

[0072] The temperatures and screw speeds of the twin-screw extruder in each zone are as follows: Zone 1 temperature 195℃, Zone 2 temperature 255℃, Zone 3 temperature 255℃, Zone 4 temperature 255℃, Zone 5 temperature 255℃, Zone 6 temperature 255℃, and die head temperature 255℃; screw speed 260r / min.

[0073] Example 5

[0074] (I) Preparation of SrF2@Bi2O3 type wear-resistant and antibacterial filler:

[0075] (1) Weigh 384g of strontium chloride, 329g of ammonium fluoride, 777g of anhydrous ethanol and 845g of deionized water, add them to a reactor vessel, react at 53℃ for 7.3h, and cool to room temperature to obtain solution A.

[0076] (2) Solution A was filtered, washed, and dried at 58°C for 8.6 hours to obtain strontium fluoride.

[0077] (3) Weigh 222g of strontium fluoride, 233g of bismuth nitrate, 155g of ammonia, 545g of anhydrous ethanol and 888g of deionized water, add them to a reactor vessel, react at 84℃ for 10.8h, filter, wash and dry at 66℃ for 5.5h to obtain solid B.

[0078] (4) Solid B was placed in a muffle furnace and calcined at 738°C for 10.6 h to obtain wear-resistant and antibacterial filler M5 of type SrF2@Bi2O3.

[0079] (II) Preparation of ABS composite materials:

[0080] (1) Weigh 97 parts of ABS, 11.8 parts of wear-resistant and antibacterial filler M5, 0.1 parts of Irganox1010, and 0.1 parts of Irganox168, mix and stir evenly to obtain a mixture;

[0081] (2) The mixture obtained in step (1) is extruded from the extruder and granulated to obtain ABS composite material P5.

[0082] The temperatures and screw speeds of the twin-screw extruder in each zone are as follows: Zone 1 temperature 195℃, Zone 2 temperature 245℃, Zone 3 temperature 245℃, Zone 4 temperature 245℃, Zone 5 temperature 245℃, Zone 6 temperature 245℃, and die head temperature 245℃; screw speed 255r / min.

[0083] Comparative Example 1

[0084] (1) Weigh 97 parts of ABS, 11.8 parts of nano TiO2, 0.1 parts of Irganox1010, and 0.1 parts of Irganox168, mix and stir evenly to obtain a mixture;

[0085] (2) The mixture obtained in step (1) is extruded from the extruder and granulated to obtain ABS composite material D1.

[0086] The temperatures and screw speeds of the twin-screw extruder in each zone are as follows: Zone 1 temperature 195℃, Zone 2 temperature 245℃, Zone 3 temperature 245℃, Zone 4 temperature 245℃, Zone 5 temperature 245℃, Zone 6 temperature 245℃, and die head temperature 245℃; screw speed 255r / min.

[0087] The performance data of the ABS composite materials of Examples 1-5 (P1-5) and Comparative Example 1 (D1) are shown in Table 1 below:

[0088] Table 1

[0089]

[0090] As can be seen from Table 1:

[0091] In summary, P1-5 has better wear resistance and antibacterial properties than D1, which indicates that the ABS composite material of the present invention has better wear resistance and antibacterial properties.

[0092] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various different choices and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. An antibacterial and wear-resistant ABS composite material, characterized in that, It includes the following components by weight: 95-105 parts ABS, 8-12 parts wear-resistant and antibacterial filler, and 0.1-0.5 parts antioxidant.

2. The antibacterial and wear-resistant ABS composite material according to claim 1, characterized in that, It includes the following components by weight: 100 parts ABS, 10 parts abrasion-resistant and antibacterial filler, and 0.3 parts antioxidant.

3. The antibacterial and wear-resistant ABS composite material according to claim 2, characterized in that, The wear-resistant and antibacterial filler is SrF2@Bi2O3.

4. The antibacterial and wear-resistant ABS composite material according to claim 3, characterized in that, The wear-resistant and antibacterial filler is prepared by the following method: (1) Weigh a certain amount of strontium chloride, ammonium fluoride, anhydrous ethanol and deionized water, add them to a reactor vessel, react at 40-60℃ for 6-8h, and cool to room temperature to obtain solution A; (2) Filter, wash and dry solution A at 50-60℃ for 8-10 h to obtain strontium fluoride; (3) Weigh a certain amount of strontium fluoride, bismuth nitrate, ammonia, anhydrous ethanol and deionized water, add them to a reactor vessel, react at 80-90℃ for 10-12h, filter, wash and dry at 60-70℃ for 5-7h to obtain solid B; (4) Place solid B in a muffle furnace and calcine at 700-740℃ for 8-12 hours to obtain wear-resistant and antibacterial filler of type SrF2@Bi2O3.

5. The antibacterial and wear-resistant ABS composite material according to claim 4, characterized in that, In step (1), the mass ratio of strontium chloride, ammonium fluoride, anhydrous ethanol, and deionized water is (30-40): (30-36): (70-80): (80-100).

6. The antibacterial and wear-resistant ABS composite material according to claim 4, characterized in that, In step (3), the mass ratio of strontium fluoride, bismuth nitrate, ammonia, anhydrous ethanol, and deionized water is (20-30): (20-24): (10-16): (50-60): (80-90).

7. The antibacterial and wear-resistant ABS composite material according to claim 1, characterized in that, The antioxidant is one or a mixture of several of the following: BASF tris(2,4-di-tert-butyl)phosphite, pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and 1,3,5-trimethyl-2,4,6-(3,5-di-tert-butyl-4-hydroxyphenyl)benzene.

8. The method for preparing the antibacterial and wear-resistant ABS composite material according to any one of claims 1-7, characterized in that, Includes the following steps: (1) Weigh a certain amount of ABS, wear-resistant antibacterial filler and antioxidant, mix and stir evenly to obtain a mixture; (2) The mixture obtained above is extruded and granulated to obtain antibacterial and wear-resistant ABS composite material.

9. The method for preparing the antibacterial and wear-resistant ABS composite material according to claim 8, characterized in that, The twin-screw extruder in step (2) includes six temperature zones arranged in sequence: zone 1 temperature 180-200℃, zone 2 temperature 240-260℃, zone 3 temperature 240-260℃, zone 4 temperature 240-260℃, zone 5 temperature 240-260℃, zone 6 temperature 240-260℃, and die head temperature 240-260℃; the screw speed is 200-280 r / min.

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