CN115608054A - Antibacterial material and application thereof in preparation of automobile air conditioner filter element - Google Patents
Antibacterial material and application thereof in preparation of automobile air conditioner filter element Download PDFInfo
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- CN115608054A CN115608054A CN202211245783.0A CN202211245783A CN115608054A CN 115608054 A CN115608054 A CN 115608054A CN 202211245783 A CN202211245783 A CN 202211245783A CN 115608054 A CN115608054 A CN 115608054A
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 61
- 239000000463 material Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims description 44
- 239000000440 bentonite Substances 0.000 claims abstract description 75
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 75
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000003607 modifier Substances 0.000 claims abstract description 45
- 229920001661 Chitosan Polymers 0.000 claims abstract description 44
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 34
- 230000002195 synergetic effect Effects 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims abstract description 21
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- 239000008367 deionised water Substances 0.000 claims abstract description 18
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 46
- 238000002156 mixing Methods 0.000 claims description 42
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- 239000002041 carbon nanotube Substances 0.000 claims description 27
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 27
- 239000012747 synergistic agent Substances 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 21
- 238000000498 ball milling Methods 0.000 claims description 20
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 14
- 229910017604 nitric acid Inorganic materials 0.000 claims description 14
- -1 sodium alkyl sulfonate Chemical class 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 10
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 9
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 9
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 7
- 239000001913 cellulose Substances 0.000 claims description 7
- 229920002678 cellulose Polymers 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 7
- 235000011152 sodium sulphate Nutrition 0.000 claims description 7
- 239000002352 surface water Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 238000004378 air conditioning Methods 0.000 claims 1
- 230000000845 anti-microbial effect Effects 0.000 claims 1
- 239000004599 antimicrobial Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 12
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005552 sodium lignosulfonate Polymers 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to the technical field of antibacterial materials, and particularly discloses an antibacterial material which comprises the following raw materials in parts by weight: 30-40 parts of nano silver, 5-10 parts of bentonite modifier, 10-15 parts of chitosan synergistic solution, 6-10 parts of sodium dodecyl sulfate, 4-9 parts of lanthanum nitrate, 50-60 parts of deionized water and 110-120 parts of carbon fiber. According to the antibacterial material, the nano-silver is used as an antibacterial matrix, the bentonite modifier is matched with the chitosan synergistic solution for assistance, the sodium dodecyl sulfate and the lanthanum nitrate are added for assistance, and the antibacterial property and the antibacterial stability of the product are enhanced through the synergistic effect of the filter element and the antibacterial agent and the raw materials.
Description
Technical Field
The invention relates to the technical field of antibiosis, in particular to an antibacterial material and application thereof in preparation of an automobile air conditioner filter element.
Background
When an automobile runs with an air conditioner, external air is sucked into a carriage, but the air contains many different particles, such as dust, pollen, soot, abrasive particles, ozone, odor, nitrogen oxides, sulfur dioxide, carbon dioxide, benzene, and the like, and contains bacterial components, so that an antibacterial material is required for sterilization and filtration. The air conditioner filter element antibacterial material in the prior art has the advantages of simple material, poor antibacterial persistence and difficulty in improving antibacterial efficiency.
Disclosure of Invention
In view of the defects in the prior art, the present invention aims to provide an antibacterial material and an application thereof in the preparation of a filter element of an automobile air conditioner, so as to solve the problems in the background art.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the invention provides an antibacterial material which comprises the following raw materials in parts by weight:
30-40 parts of nano silver, 5-10 parts of bentonite modifier, 10-15 parts of chitosan synergistic solution, 6-10 parts of sodium dodecyl sulfate, 4-9 parts of lanthanum nitrate, 50-60 parts of deionized water and 110-120 parts of carbon fiber.
Preferably, the antibacterial material comprises the following raw materials in parts by weight:
35 parts of nano-silver, 7.5 parts of bentonite modifier, 12.5 parts of chitosan synergistic solution, 8 parts of sodium dodecyl sulfate, 6.5 parts of lanthanum nitrate, 55 parts of deionized water and 115 parts of carbon fiber.
Preferably, the preparation method of the bentonite modifier comprises the following steps:
s01: adding 10-20 parts of carbon nano tube into 35-45 parts of hydrochloric acid solution, then adding 2-6 parts of cellulose sodium sulfate and 1-3 parts of sodium lignin sulfonate, and fully stirring and mixing to obtain carbon nano tube treatment liquid;
s02: feeding bentonite into a ball mill for ball milling, sieving by a 50-100 mesh sieve, and then feeding the bentonite into a 3-6 times of sodium dodecyl sulfate solution to be uniformly stirred and dispersed to obtain bentonite liquid;
s03: mixing bentonite liquid and carbon nano tube treatment liquid according to the weight ratio of 2: (6-9) stirring and mixing, washing with water, and drying to obtain the bentonite modifier.
The inventor of the invention finds that the antibacterial durability of the product is obviously reduced without adding the bentonite modifier, and meanwhile, the preparation of the bentonite modifier does not adopt the treatment of the carbon nano tube treatment fluid, and the preparation of the carbon nano tube treatment fluid does not add sodium lignosulfonate, so that the antibacterial durability of the product has a trend of deterioration;
preferably, the mass fraction of the hydrochloric acid solution is 5-10%; the mass fraction of the sodium dodecyl sulfate solution is 10-15%.
Preferably, the rotation speed of the ball mill is 1200-1500r/min, and the ball milling time is 20-30min.
Preferably, the rotation speed of stirring and mixing is 800-1200r/min, the stirring time is 10-20min, and the stirring temperature is 55-65 ℃.
Preferably, the preparation method of the chitosan synergistic fluid comprises the following steps:
adding 5-10 parts of chitosan into 20-30 parts of synergistic agent, then adding 2-5 parts of silica sol, and fully stirring and mixing, wherein the preparation method of the synergistic agent comprises the following steps: adding 1-4 parts of silane coupling agent KH560 and 0.2-0.4 part of sodium alkylsulfonate into 30-40 parts of nitric acid solution, and uniformly stirring to obtain the synergistic agent.
The inventor of the invention finds that the antibacterial durability of the product is obviously deteriorated without adding the chitosan synergistic liquid, the synergistic effect can be achieved with the bentonite modifier by adopting the chitosan synergistic liquid without adding the chitosan synergistic liquid, the antibacterial stability of the product is enhanced together, in addition, silica sol is not added in the preparation of the chitosan synergistic liquid, the silane coupling agent KH560 and sodium alkyl sulfonate are not added in the synergistic agent, the performance of the product is deteriorated, and only the chitosan synergistic liquid prepared by adopting the method of the invention has the most remarkable improvement on the performance effect of the product.
Preferably, the mass fraction of the nitric acid solution is 10-15%.
Preferably, the preparation method of the antibacterial material comprises the following steps:
sequentially stirring and mixing nano-silver, a bentonite modifier, chitosan coordination liquid, sodium dodecyl sulfate, lanthanum nitrate and deionized water fully to obtain an antibacterial agent; then winding the carbon fiber into a columnar filter element to form a winding filter element; and (3) placing the wound filter element in an antibacterial agent for high-pressure treatment at 20-30MPa for 1-2h at 40 ℃, taking out after the treatment is finished, and drying in a drying oven until the surface water content is lower than 5%.
The invention also provides application of the antibacterial material in preparation of the automobile air conditioner filter element.
Compared with the prior art, the invention has the following beneficial effects:
according to the antibacterial material, the nano-silver is used as an antibacterial matrix, the bentonite modifier is matched with the chitosan synergistic solution for assistance, the sodium dodecyl sulfate and the lanthanum nitrate are added for assistance, and the antibacterial property and the antibacterial stability of the product are enhanced through the synergistic effect of the filter element and the antibacterial agent and the raw materials.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The antibacterial material comprises the following raw materials in parts by weight:
30-40 parts of nano silver, 5-10 parts of bentonite modifier, 10-15 parts of chitosan synergistic solution, 6-10 parts of sodium dodecyl sulfate, 4-9 parts of lanthanum nitrate, 50-60 parts of deionized water and 110-120 parts of carbon fiber.
The antibacterial material comprises the following raw materials in parts by weight:
35 parts of nano silver, 7.5 parts of bentonite modifier, 12.5 parts of chitosan synergistic liquid, 8 parts of sodium dodecyl sulfate, 6.5 parts of lanthanum nitrate, 55 parts of deionized water and 115 parts of carbon fiber.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s01: adding 10-20 parts of carbon nano tube into 35-45 parts of hydrochloric acid solution, then adding 2-6 parts of cellulose sodium sulfate and 1-3 parts of sodium lignin sulfonate, and fully stirring and mixing to obtain carbon nano tube treatment solution;
s02: feeding bentonite into a ball mill for ball milling, sieving by a 50-100 mesh sieve, and then feeding the bentonite into a 3-6 times of sodium dodecyl sulfate solution to be uniformly stirred and dispersed to obtain bentonite liquid;
s03: mixing bentonite liquid and carbon nano tube treatment liquid according to the weight ratio of 2: (6-9) stirring and mixing, washing with water and drying after stirring to obtain the bentonite modifier.
The mass fraction of the hydrochloric acid solution in the embodiment is 5-10%; the mass fraction of the sodium dodecyl sulfate solution is 10-15%.
The ball milling speed of the ball mill of the embodiment is 1200-1500r/min, and the ball milling time is 20-30min.
Preferably, the rotation speed of stirring and mixing is 800-1200r/min, the stirring time is 10-20min, and the stirring temperature is 55-65 ℃.
The preparation method of the chitosan coordination liquid of the embodiment comprises the following steps:
adding 5-10 parts of chitosan into 20-30 parts of synergistic agent, then adding 2-5 parts of silica sol, stirring and fully mixing, wherein the preparation method of the synergistic agent comprises the following steps: adding 1-4 parts of silane coupling agent KH560 and 0.2-0.4 part of sodium alkyl sulfonate into 30-40 parts of nitric acid solution, and uniformly stirring to obtain the synergistic agent.
The mass fraction of the nitric acid solution in this example was 10 to 15%.
The preparation method of the antibacterial material of the embodiment comprises the following steps:
sequentially stirring and mixing nano-silver, a bentonite modifier, chitosan coordination liquid, sodium dodecyl sulfate, lanthanum nitrate and deionized water fully to obtain an antibacterial agent; then winding the carbon fiber into a columnar filter element to form a wound filter element; and (3) placing the wound filter element in an antibacterial agent for high-pressure treatment at 20-30MPa for 1-2h at 40 ℃, taking out after the treatment is finished, and drying in a drying oven until the surface water content is lower than 5%.
The invention also provides application of the antibacterial material in preparation of the automobile air conditioner filter element.
Example 1.
The antibacterial material comprises the following raw materials in parts by weight:
30 parts of nano-silver, 5 parts of bentonite modifier, 10 parts of chitosan synergistic solution, 6 parts of sodium dodecyl sulfate, 4 parts of lanthanum nitrate, 50 parts of deionized water and 110 parts of carbon fiber.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s01: adding 10 parts of carbon nano tube into 35 parts of hydrochloric acid solution, then adding 2 parts of cellulose sodium sulfate and 1 part of sodium lignin sulfonate, and fully stirring and mixing to obtain carbon nano tube treatment liquid;
s02: feeding bentonite into a ball mill for ball milling, sieving by a 50-mesh sieve, and then feeding the bentonite into a 3-time sodium dodecyl sulfate solution to be uniformly stirred and dispersed to obtain bentonite liquid;
s03: mixing bentonite liquid and carbon nano tube treatment liquid according to the weight ratio of 1: and 3, stirring and mixing, washing with water, and drying to obtain the bentonite modifier.
The mass fraction of the hydrochloric acid solution in this example was 5%; the mass fraction of the sodium dodecyl sulfate solution is 10%.
The ball milling speed of the ball mill in the embodiment is 1200r/min, and the ball milling time is 20min.
The stirring and mixing speed of the present example was 800r/min, the stirring time was 10min, and the stirring temperature was 55 ℃.
The preparation method of the chitosan coordination liquid of the embodiment comprises the following steps:
adding 5 parts of chitosan into 20 parts of synergistic agent, then adding 2 parts of silica sol, and fully stirring and mixing, wherein the preparation method of the synergistic agent comprises the following steps: and adding 1 part of silane coupling agent KH560 and 0.2 part of sodium alkylsulfonate into 30 parts of nitric acid solution, and uniformly stirring to obtain the synergistic agent.
The mass fraction of the nitric acid solution in this example was 10%.
The preparation method of the antibacterial material of the embodiment comprises the following steps:
sequentially stirring and mixing nano-silver, a bentonite modifier, chitosan coordination liquid, sodium dodecyl sulfate, lanthanum nitrate and deionized water fully to obtain an antibacterial agent; then winding the carbon fiber into a columnar filter element to form a winding filter element; and (3) placing the wound filter element in an antibacterial agent for high-pressure treatment at 20MPa for 1h at 40 ℃, taking out after the treatment is finished, and drying in a drying oven until the surface water content is lower than 5%.
The invention also provides application of the antibacterial material in preparation of the automobile air conditioner filter element.
Example 2.
The antibacterial material comprises the following raw materials in parts by weight:
40 parts of nano silver, 10 parts of bentonite modifier, 15 parts of chitosan synergistic liquid, 10 parts of sodium dodecyl sulfate, 9 parts of lanthanum nitrate, 60 parts of deionized water and 120 parts of carbon fiber.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s01: adding 20 parts of carbon nano tube into 45 parts of hydrochloric acid solution, then adding 6 parts of cellulose sodium sulfate and 3 parts of sodium lignin sulfonate, and fully stirring and mixing to obtain carbon nano tube treatment liquid;
s02: feeding bentonite into a ball mill for ball milling, sieving by a 100-mesh sieve, and then feeding the bentonite into a 6-time sodium dodecyl sulfate solution, stirring and dispersing uniformly to obtain bentonite liquid;
s03: mixing bentonite liquid and carbon nano tube treatment liquid according to the weight ratio of 2: and 9, stirring and mixing, washing with water, and drying to obtain the bentonite modifier.
The mass fraction of the hydrochloric acid solution in the embodiment is 10%; the mass fraction of the sodium dodecyl sulfate solution is 15%.
The ball milling speed of the ball mill in the embodiment is 1500r/min, and the ball milling time is 30min.
In the embodiment, the rotation speed of stirring and mixing is 1200r/min, the stirring time is 20min, and the stirring temperature is 65 ℃.
The preparation method of the chitosan coordination liquid of the embodiment comprises the following steps:
adding 10 parts of chitosan into 30 parts of a synergistic agent, then adding 5 parts of silica sol, and fully stirring and mixing, wherein the preparation method of the synergistic agent comprises the following steps: and adding 4 parts of silane coupling agent KH560 and 0.4 part of sodium alkylsulfonate into 40 parts of nitric acid solution, and uniformly stirring to obtain the synergistic agent.
The mass fraction of the nitric acid solution in this example was 15%.
The preparation method of the antibacterial material of the embodiment comprises the following steps:
sequentially stirring and mixing nano-silver, a bentonite modifier, chitosan coordination liquid, sodium dodecyl sulfate, lanthanum nitrate and deionized water fully to obtain an antibacterial agent; then winding the carbon fiber into a columnar filter element to form a wound filter element; and (3) placing the wound filter element in an antibacterial agent for high-pressure treatment at the high pressure of 30MPa for 2h at the treatment temperature of 40 ℃, taking out after the treatment is finished, and drying in a drying oven until the surface water content is lower than 5%.
The invention also provides application of the antibacterial material in preparation of the automobile air conditioner filter element.
Example 3.
The antibacterial material comprises the following raw materials in parts by weight:
35 parts of nano silver, 7.5 parts of bentonite modifier, 12.5 parts of chitosan synergistic liquid, 8 parts of sodium dodecyl sulfate, 6.5 parts of lanthanum nitrate, 55 parts of deionized water and 115 parts of carbon fiber.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s01: adding 15 parts of carbon nano tube into 40 parts of hydrochloric acid solution, then adding 4 parts of cellulose sodium sulfate and 2 parts of sodium lignin sulfonate, and fully stirring and mixing to obtain carbon nano tube treatment liquid;
s02: feeding bentonite into a ball mill for ball milling, sieving by a 75-mesh sieve, and then feeding the bentonite into a 4.5-time sodium dodecyl sulfate solution to be uniformly stirred and dispersed to obtain bentonite liquid;
s03: mixing bentonite liquid and carbon nano tube treatment liquid according to the weight ratio of 2:7.5 stirring and mixing, washing with water, and drying to obtain the bentonite modifier.
The mass fraction of the hydrochloric acid solution in this example was 7.5%; the mass fraction of the sodium dodecyl sulfate solution is 12.5%.
The ball milling speed of the ball mill in the embodiment is 1350r/min, and the ball milling time is 25min.
In the embodiment, the rotation speed of stirring and mixing is 1000r/min, the stirring time is 15min, and the stirring temperature is 60 ℃.
The preparation method of the chitosan coordination liquid of the embodiment comprises the following steps:
adding 7.5 parts of chitosan into 25 parts of synergistic agent, then adding 3.5 parts of silica sol, and fully stirring and mixing, wherein the preparation method of the synergistic agent comprises the following steps: and adding 2.5 parts of silane coupling agent KH560 and 0.3 part of sodium alkylsulfonate into 35 parts of nitric acid solution, and uniformly stirring to obtain the synergistic agent.
The mass fraction of the nitric acid solution in this example was 12.5%.
The preparation method of the antibacterial material of the embodiment comprises the following steps:
sequentially stirring and mixing nano-silver, a bentonite modifier, chitosan coordination liquid, sodium dodecyl sulfate, lanthanum nitrate and deionized water fully to obtain an antibacterial agent; then winding the carbon fiber into a columnar filter element to form a winding filter element; and (3) placing the wound filter element in an antibacterial agent for high-pressure treatment at 25MPa for 1.5h at 40 ℃, taking out after the treatment is finished, and drying in a drying oven until the surface water content is lower than 5%.
The invention also provides application of the antibacterial material in preparation of the automobile air conditioner filter element.
Example 4.
The antibacterial material comprises the following raw materials in parts by weight:
32 parts of nano-silver, 6 parts of bentonite modifier, 12 parts of chitosan synergistic solution, 7 parts of sodium dodecyl sulfate, 5 parts of lanthanum nitrate, 52 parts of deionized water and 112 parts of carbon fiber.
The preparation method of the bentonite modifier in the embodiment comprises the following steps:
s01: adding 12 parts of carbon nano tube into 36 parts of hydrochloric acid solution, then adding 3 parts of cellulose sodium sulfate and 2 parts of sodium lignin sulfonate, and fully stirring and mixing to obtain carbon nano tube treatment liquid;
s02: feeding bentonite into a ball mill for ball milling, sieving by a 55-mesh sieve, and then feeding the bentonite into a 4-time sodium dodecyl sulfate solution to be uniformly stirred and dispersed to obtain bentonite liquid;
s03: mixing bentonite liquid and carbon nano tube treatment liquid according to the weight ratio of 2: and 7, stirring and mixing, washing with water, and drying to obtain the bentonite modifier.
The mass fraction of the hydrochloric acid solution in the embodiment is 6%; the mass fraction of the sodium dodecyl sulfate solution is 12%.
The ball milling speed of the ball mill in the embodiment is 1250r/min, and the ball milling time is 25min.
The stirring and mixing speed of the present example was 900r/min, the stirring time was 12min, and the stirring temperature was 58 ℃.
The preparation method of the chitosan coordination liquid of the embodiment comprises the following steps:
adding 6 parts of chitosan into 23 parts of the synergistic agent, then adding 3 parts of silica sol, and fully stirring and mixing, wherein the preparation method of the synergistic agent comprises the following steps: adding 2 parts of silane coupling agent KH560 and 0.25 part of sodium alkylsulfonate into 32 parts of nitric acid solution, and uniformly stirring to obtain the synergistic agent.
The mass fraction of the nitric acid solution in this example was 12%.
The preparation method of the antibacterial material of the embodiment comprises the following steps:
sequentially stirring and mixing nano-silver, a bentonite modifier, chitosan coordination liquid, sodium dodecyl sulfate, lanthanum nitrate and deionized water fully to obtain an antibacterial agent; then winding the carbon fiber into a columnar filter element to form a wound filter element; and (3) placing the wound filter element in an antibacterial agent for high-pressure treatment at 22MPa for 1.2h at 40 ℃, taking out after the treatment is finished, and drying in a drying oven until the surface water content is lower than 5%.
The invention also provides application of the antibacterial material in preparation of the automobile air conditioner filter element.
Comparative example 1.
Unlike example 3, no bentonite modifier was added.
Comparative example 2.
Different from the example 3, the bentonite modifier is prepared without adopting the carbon nano tube treatment solution.
Comparative example 3.
The difference from example 3 is that sodium lignin sulfonate was not added in the preparation of the carbon nanotube treating solution.
Comparative example 4.
The difference from example 3 is that bentonite is used instead of the bentonite modifier.
Comparative example 5.
Unlike example 3, no chitosan synergist was added.
Comparative example 6.
The difference from example 3 is that no silica sol was added in the preparation of the chitosan synergetic solution.
Comparative example 7.
The difference from the example 3 is that the silane coupling agent KH560 is not added into the preparation of the chitosan coordination liquid.
Comparative example 8.
In contrast to example 3, no sodium alkylsulfonate was added to the synergist.
Comparative example 9.
In contrast to example 3, lanthanum nitrate was not added.
The durability of the antibiosis is tested by adopting a steel wire brush to polish the product for 100 times;
the results of the performance measurements of examples 1 to 4 and comparative examples 1 to 9 are as follows
From examples 1 to 4 and comparative examples 1 to 9,
the product of example 3 has excellent antibacterial properties and antibacterial durability;
compared with the comparative examples 1-9, the bentonite modifier is not added, the antibacterial durability of the product is obviously reduced, meanwhile, the bentonite modifier is not treated by the carbon nano tube treatment solution in the preparation process, the sodium lignosulfonate is not added in the preparation process of the carbon nano tube treatment solution, the antibacterial durability of the product has the trend of deterioration, the bentonite modifier is replaced by the bentonite, and the antibacterial effect of the product is not obviously changed, so that the antibacterial performance of the product is obvious only by the bentonite modifier prepared by the method disclosed by the invention;
the chitosan synergistic solution is not added, so that the antibacterial durability of the product is obviously deteriorated, the chitosan synergistic solution which is not added can have a synergistic effect with the bentonite modifier, and the antibacterial stability of the product is enhanced together.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (10)
1. The antibacterial material is characterized by comprising the following raw materials in parts by weight:
30-40 parts of nano silver, 5-10 parts of bentonite modifier, 10-15 parts of chitosan synergistic solution, 6-10 parts of sodium dodecyl sulfate, 4-9 parts of lanthanum nitrate, 50-60 parts of deionized water and 110-120 parts of carbon fiber.
2. The antibacterial material according to claim 1, characterized in that the antibacterial material comprises the following raw materials in parts by weight:
35 parts of nano-silver, 7.5 parts of bentonite modifier, 12.5 parts of chitosan synergistic solution, 8 parts of sodium dodecyl sulfate, 6.5 parts of lanthanum nitrate, 55 parts of deionized water and 115 parts of carbon fiber.
3. The antibacterial material of claim 1, wherein the bentonite modifier is prepared by the following steps:
s01: adding 10-20 parts of carbon nano tube into 35-45 parts of hydrochloric acid solution, then adding 2-6 parts of cellulose sodium sulfate and 1-3 parts of sodium lignin sulfonate, and fully stirring and mixing to obtain carbon nano tube treatment solution;
s02: feeding bentonite into a ball mill for ball milling, sieving by a 50-100 mesh sieve, and then feeding the bentonite into a 3-6 times of sodium dodecyl sulfate solution to be uniformly stirred and dispersed to obtain bentonite liquid;
s03: mixing bentonite liquid and carbon nano tube treatment liquid according to the weight ratio of 2: (6-9) stirring and mixing, washing with water and drying after stirring to obtain the bentonite modifier.
4. The antibacterial material according to claim 3, wherein the mass fraction of the hydrochloric acid solution is 5-10%; the mass fraction of the sodium dodecyl sulfate solution is 10-15%.
5. The antibacterial material according to claim 3, wherein the ball milling speed of the ball mill is 1200-1500r/min, and the ball milling time is 20-30min.
6. The antibacterial material according to claim 3, wherein the stirring and mixing speed is 800-1200r/min, the stirring time is 10-20min, and the stirring temperature is 55-65 ℃.
7. The antibacterial material of claim 1, wherein the chitosan synergistic solution is prepared by the following steps:
adding 5-10 parts of chitosan into 20-30 parts of synergistic agent, then adding 2-5 parts of silica sol, and fully stirring and mixing, wherein the preparation method of the synergistic agent comprises the following steps: adding 1-4 parts of silane coupling agent KH560 and 0.2-0.4 part of sodium alkyl sulfonate into 30-40 parts of nitric acid solution, and uniformly stirring to obtain the synergistic agent.
8. The antibacterial material according to claim 7, wherein the mass fraction of the nitric acid solution is 10-15%.
9. The antibacterial material according to claim 1, wherein the preparation method of the antibacterial material comprises the following steps:
stirring and mixing the nano silver, the bentonite modifier, the chitosan synergistic solution, the sodium dodecyl sulfate, the lanthanum nitrate and the deionized water in sequence to obtain the antibacterial agent; then winding the carbon fiber into a columnar filter element to form a wound filter element; and (3) placing the wound filter element in an antibacterial agent for high-pressure treatment at 20-30MPa for 1-2h at 40 ℃, taking out after the treatment is finished, and drying in a drying oven until the surface water content is lower than 5%.
10. Use of an antimicrobial material according to any one of claims 1 to 9 in the manufacture of a filter element for automotive air conditioning.
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