Antibacterial pc / abs alloy material for automotive interior and manufacturing method thereof

Abstract

The application relates to an antibacterial PC / ABS alloy material for automobile interior decoration and a manufacturing method thereof, and belongs to the technical field of decorative material preparation. The material comprises the following components in parts by weight: 40-90 parts of polycarbonate, 5-55 parts of ABS resin, 1-10 parts of a toughening agent, 1-20 parts of antibacterial master batch, and 0.1-1 part of a first auxiliary agent; the antibacterial master batch comprises the following components in parts by weight: 50-95 parts of polybutylene terephthalate, 5-50 parts of a modified antibacterial agent, 1-5 parts of a compatible agent, and 0.1-1 part of a second auxiliary agent; and the modified antibacterial agent comprises the following components in parts by weight: 40-95 parts of zeolite powder and 5-60 parts of an organic antibacterial agent. The application utilizes the characteristics of high specific surface area of the zeolite powder to load the antibacterial agent onto the surface of the zeolite powder through mechanical force shearing, so that the effect of fixing the antibacterial agent is achieved, the migration performance of the organic antibacterial agent is improved, and the service time thereof is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of decorative material preparation, and particularly relates to an antibacterial PC / ABS alloy material for automobile interior decoration and a manufacturing method thereof. BACKGROUND

[0002] With the development of automobiles, consumers have more and more contact with automobiles. The prevalence of online car-hailing has also driven the popularity of automobiles. However, the emergence of online car-hailing and other transportation tools has also brought many problems, such as the cleaning and sanitation of automobile interiors. Against this background, the demand for automobile interior materials with antibacterial properties is very strong.

[0003] Existing antibacterial systems are mainly divided into inorganic antibacterial agents and organic antibacterial agents. Inorganic antibacterial agents usually use metal ion antibacterial agents, such as metal anions and metal copper ions. Such metal ions not only cause the color of the plastic substrate to turn black, but also easily cause the degradation of the plastic substrate, and the physical properties decrease significantly. At the same time, it is generally recognized in the industry that metal ion antibacterial agents, especially silver ion antibacterial agents commonly used at present, have a great toxic effect on the human body. Organic antibacterial agents are mainly polyguanidine, including polyhexamethylene guanidine hydrochloride, polyhexamethylene biguanide hydrochloride, etc. With the increasing demand, the variety of polyguanidine antibacterial agents is also increasing. However, because polyguanidine is prone to precipitation during use, the antibacterial effect is not long, and the addition amount cannot be increased to achieve better antibacterial effect, and usually needs to be compounded with inorganic antibacterial agents.

[0004] Therefore, in view of this demand, an antibacterial material is needed that does not contain metal ion antibacterial agents and does not have the problem of antibacterial failure after long-term use, while also meeting the mechanical performance requirements of automobile interiors. SUMMARY

[0005] In view of the above problems, the application provides an antibacterial PC / ABS alloy material for automobile interior decoration and a manufacturing method thereof.

[0006] The first object of the application is to provide an antibacterial PC / ABS alloy material for automobile interior decoration, which comprises the following components by weight: 40-90 parts of polycarbonate, 5-55 parts of ABS resin, 1-10 parts of toughening agent, 1-20 parts of antibacterial masterbatch, and 0.1-1 parts of first auxiliary agent.

[0007] The antibacterial masterbatch comprises the following components by weight: 50-95 parts of polybutylene terephthalate, 5-50 parts of modified antibacterial agent, 1-5 parts of compatibilizer, and 0.1-1 parts of second auxiliary agent.

[0008] Wherein, PC refers to polycarbonate, PC is the abbreviation of Polycarbonate, ABS refers to acrylonitrile-styrene-butadiene copolymer, ABS is the initial of Acrylonitrile Butadiene Styrene.

[0009] Preferably, the antibacterial PC / ABS alloy material comprises the following components by weight: polycarbonate 50-75 parts, ABS resin 25-45 parts, toughening agent 2-7 parts, antibacterial master batch 5-10 parts, first auxiliary agent 0.1-0.5 parts.

[0010] Preferably, the antibacterial master batch comprises the following components by weight: polybutylene terephthalate 70-90 parts, modified antibacterial agent 15-35 parts, compatibilizer 1-3 parts, second auxiliary agent 0.1-0.5 parts.

[0011] Further, the modified antibacterial agent comprises the following components by weight: zeolite powder 40-95 parts, organic antibacterial agent 5-60 parts.

[0012] Further, the modified antibacterial agent is obtained by the following reaction operation:

[0013] After mixing the zeolite powder and the organic antibacterial agent, they are placed in an internal mixer and are subjected to shear blending to obtain the modified antibacterial agent.

[0014] Further, the mixing time of the zeolite powder and the organic antibacterial agent is 5-30 min, and the shear temperature is 180-280℃.

[0015] Preferably, the mixing time of the zeolite powder and the organic antibacterial agent in the mixer is 5 min, 6 min, 7 min, 8 min, 9 min, 10 min, 11 min, 12 min, 13 min, 14 min, 15 min, 16 min, 17 min, 18 min, 19 min, 20 min, 21 min, 22 min, 23 min, 24 min, 25 min, 26 min, 27 min, 28 min, 29 min or 30 min.

[0016] Preferably, the temperature at which the shear blending occurs is 180°C, 181°C, 182°C, 183°C, 184°C, 185°C, 186°C, 187°C, 188°C, 189°C, 190°C, 191°C, 192°C, 193°C, 194°C, 195°C, 196°C, 197°C, 198°C, 199°C, 200°C, 201°C, 202°C, 203°C, 204°C, 205°C, 206°C, 207°C, 208°C, 209°C, 210°C, 211°C, 212°C, 213°C, 214°C, 215°C, 216°C, 217°C, 218°C, 219°C, 220°C, 221°C, 222°C, 223°C, 224°C, 225°C, 226°C, 227°C, 228°C, 229°C, 230°C, 231°C, 232°C, 233°C, 234°C, 235°C, 236°C, 237°C, 238°C, 239°C, 240°C, 241°C, 242°C, 243°C, 244°C, 245°C, 246°C, 247°C, 248°C, 249°C, 250°C, 251°C, 252°C, 253°C, 254°C, 255°C, 256°C, 257°C, 258°C, 259°C, 260°C, 261°C, 262°C, 263°C, 264°C, 265°C, 266°C, 267°C, 268°C, 269°C, 270°C, 271°C, 272°C, 273°C, 274°C, 275°C, 276°C, 277°C, 278°C, 279°C, or 280°C.

[0017] Preferably, the time at which the shear blending occurs is 5 min, 6 min, 7 min, 8 min, 9 min, 10 min, 11 min, 12 min, 13 min, 14 min, or 15 min.

[0018] Further, the zeolite powder has a particle size of 1000-5000 mesh, and the ammonia absorption of the zeolite powder is ≥160 mmol / 100g.

[0019] Preferably, the particle size of the zeolite powder is 1000 mesh, 1100 mesh, 1200 mesh, 1300 mesh, 1400 mesh, 1500 mesh, 1600 mesh, 1700 mesh, 1800 mesh, 1900 mesh, 2000 mesh, 2100 mesh, 2200 mesh, 2300 mesh, 2400 mesh, 2500 mesh, 2600 mesh, 2700 mesh, 2800 mesh, 2900 mesh, 3000 mesh, 3100 mesh, 3200 mesh, 3300 mesh, 3400 mesh, 3500 mesh, 3600 mesh, 3700 mesh, 3800 mesh, 3900 mesh, 4000 mesh, 4100 mesh, 4200 mesh, 4300 mesh, 4400 mesh, 4500 mesh, 4600 mesh, 4700 mesh, 4800 mesh, 4900 mesh, or 5000 mesh.

[0020] The organic antibacterial agent includes one or more of polyhexamethylene guanidine hydrochloride, polyhexamethylene biguanide hydrochloride, polyhexamethylene guanidine nitrate, polyhexamethylene biguanide nitrate, polyhexamethylene guanidine carbonate, polyhexamethylene biguanide carbonate, polyhexamethylene guanidine propionate, and polyhexamethylene biguanide propionate.

[0021] Further, the PC resin has a number average relative molecular weight of 15000-30000 and a glass transition temperature of 140-150℃.

[0022] Preferably, the PC resin has a number average relative molecular weight of 15000-20000, 20000-25000, or 25000-30000.

[0023] Further, the ABS resin has a number average relative molecular weight of 80000-150000, a rubber content of 5-30wt%, an acrylonitrile content of 10-30wt%, and a styrene content of 40-70wt%.

[0024] Preferably, the ABS resin has a number average relative molecular weight of 80000-85000, 85000-90000, 95000-100000, 105000-110000, 115000-120000, 125000-130000, 135000-140000, or 145000-150000.

[0025] Further, the toughening agent is one or more of acrylate-based toughening agents; the toughening agent has a particle size of 50-700nm, and the toughening agent has a gum content of 40%-90%.

[0026] Further, the polybutylene terephthalate has a viscosity of 0.6-1.2.

[0027] Further, the compatibilizer is ethylene-methyl acrylate-glycidyl methacrylate ternary random copolymer (abbreviated as EMA-GMA), wherein the glycidyl methacrylate content is 8wt%; the first auxiliary agent includes an antioxidant and an ultraviolet absorber; and the second auxiliary agent includes a dispersant, a pigment, and a heat stabilizer.

[0028] Further, the method for preparing the antibacterial master batch includes:

[0029] The polybutylene terephthalate, the modified antibacterial agent, the compatibilizer, and the second auxiliary agent are mixed for 5-30min to obtain a mixture, and then the mixture is subjected to double melt extrusion and granulation to obtain the antibacterial master batch.

[0030] Preferably, the mixing time of the modified antibacterial agent, PBT, compatibilizer and second auxiliary agent is 5 min, 6 min, 7 min, 8 min, 9 min, 10 min, 11 min, 12 min, 13 min, 14 min, 15 min, 16 min, 17 min, 18 min, 19 min, 20 min, 21 min, 22 min, 23 min, 24 min, 25 min, 26 min, 27 min, 28 min, 29 min or 30 min.

[0031] Further, the second auxiliary agent includes a dispersant, a pigment and a thermal stabilizer.

[0032] Preferably, the dispersant is stearic acid monoglyceride.

[0033] Further, the pigment is one of cadmium red, cadmium yellow, titanium dioxide, carbon black, iron oxide red, iron oxide yellow.

[0034] Further, the stabilizer is one or a mixture of several of organic tin stabilizers.

[0035] Further, the temperature during melt extrusion is 200-260°C.

[0036] Preferably, the temperature during extrusion of the modified antibacterial agent, PBT, compatibilizer and second auxiliary agent is 200°C, 201°C, 202°C, 203°C, 204°C, 205°C, 206°C, 207°C, 208°C, 209°C, 210°C, 211°C, 212°C, 213°C, 214°C, 215°C, 216°C, 217°C, 218°C, 219°C, 220°C, 221°C, 222°C, 223°C, 224°C, 225°C, 226°C, 227°C, 228°C, 229°C, 230°C, 231°C, 232°C, 233°C, 234°C, 235°C, 236°C, 237°C, 238°C, 239°C, 240°C, 241°C, 242°C, 243°C, 244°C, 245°C, 246°C, 247°C, 248°C, 249°C, 250°C, 251°C, 252°C, 253°C, 254°C, 255°C, 256°C, 257°C, 258°C, 259°C or 260°C.

[0037] Further, the rotational speed during melt extrusion is 200-600 rpm.

[0038] Preferably, the rotational speed of the modified antibacterial agent, PBT, compatilizer and second auxiliary agent during melt extrusion is 200 rpm, 210 rpm, 220 rpm, 230 rpm, 240 pm, 250 rpm, 260 rpm, 270 rpm, 280 rpm, 290 rpm, 300 rpm, 310 rpm, 320 rpm, 330 rpm, 340 pm, 350 rpm, 360 rpm, 370 rpm, 380 rpm, 390 rpm, 400 rpm, 410 rpm, 420 rpm, 430 rpm, 440 pm, 450 rpm, 460 rpm, 470 rpm, 480 rpm, 490 rpm, 500 rpm, 510 rpm, 520 rpm, 530 rpm, 540 pm, 550 rpm, 560 rpm, 570 rpm, 580 rpm, 590 rpm or 600 rpm.

[0039] A second object of the present application is to provide a preparation method of the antibacterial PC / ABS alloy material for automotive interior, comprising:

[0040] The polycarbonate, ABS resin, toughening agent, antibacterial master batch and first auxiliary agent are mixed to obtain a mixture, and then the mixture is melt extruded and granulated to obtain the antibacterial PC / ABS alloy material.

[0041] Further, the mixing time is 5-30 min.

[0042] Preferably, the mixing time of the polycarbonate, ABS resin, toughening agent, antibacterial master batch and first auxiliary agent in the mixer is 5 min, 6 min, 7 min, 8 min, 9 min, 10 min, 11 min, 12 min, 13 min, 14 min, 15 min, 16 min, 17 min, 18 min, 19 min, 20 min, 21 min, 22 min, 23 min, 24 min, 25 min, 26 min, 27 min, 28 min, 29 min or 30 min.

[0043] Further, the temperature of the polycarbonate, ABS resin, toughening agent, antibacterial master batch and first auxiliary agent during melt extrusion is 200-260℃, and the rotational speed is 200-600 rpm.

[0044] Preferably, the temperature at which the polycarbonate, ABS resin, toughening agent, antibacterial masterbatch and first adjuvant are melt extruded is 200°C, 201 °C, 202°C, 203°C, 204°C, 205°C, 206°C, 207°C, 208°C, 209°C, 210°C, 211 °C, 212°C, 213°C, 214°C, 215°C, 216°C, 217°C, 218°C, 219°C, 220°C, 221 °C, 222°C, 223°C, 224°C, 225°C, 226°C, 227°C, 228°C, 229°C, 230°C, 231 °C, 232°C, 233°C, 234°C, 235°C, 236°C, 237°C, 238°C, 239°C, 240°C, 241 °C, 242°C, 243°C, 244°C, 245°C, 246°C, 247°C, 248°C, 249°C, 250°C, 251 °C, 252°C, 253°C, 254°C, 255°C, 256°C, 257°C, 258°C, 259°C or 260°C.

[0045] Preferably, the rotational speed at which the polycarbonate, ABS resin, toughening agent, antibacterial masterbatch and first adjuvant are melt extruded is 200 rpm, 210 rpm, 220 rpm, 230 rpm, 240 pm, 250 rpm, 260 rpm, 270 rpm, 280 rpm, 290 rpm, 300 rpm, 310 rpm, 320 rpm, 330 rpm, 340 pm, 350 rpm, 360 rpm, 370 rpm, 380 rpm, 390 rpm, 400 rpm, 410 rpm, 420 rpm, 430 rpm, 440 pm, 450 rpm, 460 rpm, 470 rpm, 480 rpm, 490 rpm, 500 rpm, 510 rpm, 520 rpm, 530 rpm, 540 pm, 550 rpm, 560 rpm, 570 rpm, 580 rpm, 590 rpm or 600 rpm.

[0046] Advantages of the present invention:

[0047] The application discloses an antibacterial PC / ABS alloy material for automobile interior decoration and a preparation method thereof.

[0048] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the description and claims hereof. DETAILED DESCRIPTION

[0049] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0050] Embodiment

[0051] The modified antibacterial agent and the antibacterial PC / ABS alloy material are prepared according to the formula components in Table 1.

[0052] The preparation of the modified antibacterial agent comprises the following steps:

[0053] The zeolite powder and the organic antibacterial agent according to the components in Table 1 are added into a mixer, and after 20 min of mixing, are placed into a banbury mixer, and are sheared and blended for 10 min at a shearing temperature of 270 DEG C to obtain the modified antibacterial agent.

[0054] The particle size of the zeolite powder is 4000 mesh, and the ammonia absorption amount of the zeolite powder is greater than or equal to 160 mmol / 100g.

[0055] The organic antibacterial agent is a mixed organic antibacterial agent in which polyhexamethylene guanidine hydrochloride and polyhexamethylene biguanide nitrate are mixed according to a mass ratio of 1:1.

[0056] Preparation of antibacterial masterbatch:

[0057] The modified antibacterial agent, polybutylene terephthalate, compatibilizer and second auxiliary agent in Table 1 were mixed in a mixer for 20 min to obtain a mixture, and then the mixture was melt-extruded and pelletized by a twin-screw extruder at a barrel temperature of 230℃ and a screw rotation speed of 450 rpm to obtain the antibacterial masterbatch.

[0058] The viscosity of the polybutylene terephthalate is 0.6-1.2; the compatibilizer is an ethylene-methyl acrylate-glycidyl methacrylate ternary random copolymer, wherein the content of glycidyl methacrylate is 8wt%; the second auxiliary agent includes a dispersant, a pigment and a heat stabilizer; the dispersant is stearic acid monoglyceride; the pigment is cadmium red; and the stabilizer is an organic tin stabilizer MS181.

[0059] Preparation of the antibacterial PC / ABS alloy material includes:

[0060] The polycarbonate (abbreviated as PC), ABS resin, toughening agent, antibacterial masterbatch and first auxiliary agent in Table 1 were mixed in a mixer for 25 min to obtain a mixture, and then the mixture was melt-extruded and pelletized by a twin-screw extruder to obtain the antibacterial PC / ABS alloy material, wherein the screw rotation speed of the twin-screw extruder is 500 rpm and the barrel temperature is 250℃.

[0061] The number average relative molecular weight of the PC resin is 15000-30000, and the glass transition temperature is 140-150℃.

[0062] The number average relative molecular weight of the ABS resin is 80000-150000, wherein the rubber content is 5-30wt%, the acrylonitrile content is 10-30wt%, and the styrene content is 40-70wt%.

[0063] The toughening agent is a methyl methacrylate / butadiene / styrene copolymer, the particle size of the toughening agent is 500-600nm, and the gel content of the toughening agent is 40%-90%.

[0064] The first auxiliary agent includes an antioxidant and an ultraviolet absorber, the antioxidant is antioxidant 1010, and the ultraviolet absorber is UV329.

[0065] Table 1

[0066]

[0067] The materials obtained in Examples 1-5 and Comparative Examples 1-3 were subjected to physical property tests, and the test results are shown in Table 2. Table 2

[0068]

[0069] From the data in Table 2, it can be seen that the antibacterial PC / ABS obtained by the application can better maintain the color of the substrate, ensuring the diversity of subsequent color matching; and the colony survival rate of the antibacterial PC / ABS obtained by the application is low, the antibacterial effect is better than that of traditional PC / ABS, and the more the antibacterial master batch is added, the better the antibacterial effect is.

[0070] Although the application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. An antibacterial PC / ABS alloy material for automotive interior, characterized by, It comprises the following components by weight: polycarbonate 40-90 parts, ABS resin 5-55 parts, toughening agent 1-10 parts, antibacterial masterbatch 1-20 parts, first auxiliary agent 0.1-1 part; The antibacterial masterbatch comprises the following components by weight: polybutylene terephthalate 50-95 parts, modified antibacterial agent 5-50 parts, compatibilizer 1-5 parts, second auxiliary agent 0.1-1 part; The modified antibacterial agent comprises the following components by weight: zeolite powder 40-95 parts, organic antibacterial agent 5-60 parts. 2.The antibacterial PC / ABS alloy material for automotive interior according to claim 1, characterized in that, The obtaining reaction operation of the modified antibacterial agent is as follows: After mixing the zeolite powder and the organic antibacterial agent, the modified antibacterial agent is obtained, the mixing time of the zeolite powder and the organic antibacterial agent is 5-30 min, and the shearing temperature is 180-280℃. 3.The antibacterial PC / ABS alloy material for automotive interior according to claim 1, characterized in that, The particle size of the zeolite powder is 1000-5000 mesh, the ammonia absorption amount of the zeolite powder is ≥160 mmol / 100g, and the organic antibacterial agent comprises one or more of polyhexamethylene guanidine hydrochloride, polyhexamethylene biguanide hydrochloride, polyhexamethylene guanidine nitrate, polyhexamethylene biguanide nitrate, polyhexamethylene guanidine carbonate, polyhexamethylene biguanide carbonate, polyhexamethylene guanidine propionate, and polyhexamethylene biguanide propionate. 4.The antibacterial PC / ABS alloy material for automotive interior according to claim 1, characterized in that, The antibacterial masterbatch is prepared by the following steps: After mixing the polybutylene terephthalate, the modified antibacterial agent, the compatibilizer, and the second auxiliary agent, a mixture is obtained, and then the mixture is melt extruded and granulated to obtain the antibacterial masterbatch.

5. The antibacterial PC / ABS alloy material for automotive interior according to claim 1, characterized in that, The number average relative molecular weight of the polycarbonate is 15000-30000, and the glass transition temperature is 140-150℃; the number average relative molecular weight of the ABS resin is 80000-150000, the rubber content is 5-30wt%, the acrylonitrile content is 10-30wt%, and the styrene content is 40-70wt%. 6.The antibacterial PC / ABS alloy material for automotive interior according to claim 1, characterized in that, The toughening agent is one or more of acrylate-based toughening agents; the particle size of the toughening agent is 50-700 nm, and the glue content of the toughening agent is 40%-90%. 7.The antibacterial PC / ABS alloy material for automotive interior according to claim 1, characterized in that, The viscosity of the polybutylene terephthalate is 0.6-1.

2.

8. The antibacterial PC / ABS alloy material for automotive interior according to any one of claims 1-7, characterized in that, The compatibilizer is an ethylene-methyl acrylate-glycidyl methacrylate ternary random copolymer, wherein the glycidyl methacrylate content is 8wt%; the first auxiliary agent comprises an antioxidant and an ultraviolet absorber; and the second auxiliary agent comprises a dispersant, a pigment, and a heat stabilizer.

9. The method of claim 1-8, wherein the method is characterized by, It comprises: After mixing the polycarbonate, the ABS resin, the toughening agent, the antibacterial masterbatch, and the first auxiliary agent, a mixture is obtained, and then the mixture is melt extruded and granulated by a double-screw extruder to obtain an antibacterial PC / ABS alloy material.

Images