CN117946558A - Titanium coating for cooking utensil and preparation method thereof - Google Patents
Titanium coating for cooking utensil and preparation method thereof Download PDFInfo
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- CN117946558A CN117946558A CN202410346927.4A CN202410346927A CN117946558A CN 117946558 A CN117946558 A CN 117946558A CN 202410346927 A CN202410346927 A CN 202410346927A CN 117946558 A CN117946558 A CN 117946558A
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- silicon dioxide
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- 239000011248 coating agent Substances 0.000 title claims abstract description 49
- 238000000576 coating method Methods 0.000 title claims abstract description 49
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 44
- 239000010936 titanium Substances 0.000 title claims abstract description 44
- 238000010411 cooking Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 155
- 239000010456 wollastonite Substances 0.000 claims abstract description 88
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 88
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 69
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 69
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 45
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 18
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 18
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 18
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 18
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 18
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 18
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims description 65
- 238000002156 mixing Methods 0.000 claims description 59
- 238000000498 ball milling Methods 0.000 claims description 40
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- 229910021389 graphene Inorganic materials 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 24
- 239000010445 mica Substances 0.000 claims description 21
- 229910052618 mica group Inorganic materials 0.000 claims description 21
- 239000003607 modifier Substances 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 21
- 239000004115 Sodium Silicate Substances 0.000 claims description 18
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 18
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 16
- 239000001509 sodium citrate Substances 0.000 claims description 13
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 13
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 11
- 239000004202 carbamide Substances 0.000 claims description 11
- 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 11
- 239000007788 liquid Substances 0.000 claims description 10
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 9
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 9
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 9
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 9
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 8
- 235000021355 Stearic acid Nutrition 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
- 239000007853 buffer solution Substances 0.000 claims description 8
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 8
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 8
- 239000000661 sodium alginate Substances 0.000 claims description 8
- 235000010413 sodium alginate Nutrition 0.000 claims description 8
- 229940005550 sodium alginate Drugs 0.000 claims description 8
- 239000008117 stearic acid Substances 0.000 claims description 8
- 229920001661 Chitosan Polymers 0.000 claims description 7
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000008055 phosphate buffer solution Substances 0.000 claims description 7
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 12
- 238000005201 scrubbing Methods 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000009044 synergistic interaction Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 230000000845 anti-microbial effect Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of titanium coating, and in particular discloses a titanium coating for a cooking utensil and a preparation method thereof, wherein the titanium coating comprises the following raw materials in parts by weight: 65-75 parts of polytetrafluoroethylene, 8-12 parts of polyether sulfone, 6-10 parts of nano titanium dioxide, 3-5 parts of silicon nitride and 5-8 parts of wollastonite regulated nano silicon dioxide. According to the titanium coating for the cooking utensil, polytetrafluoroethylene and polyethersulfone are matched with each other to serve as a base material, the antibacterial property of the product is enhanced by adding nano titanium dioxide, the abrasion resistance of the product is improved by adding silicon nitride, and wollastonite is used for adjusting the mutual cooperation of a nano silicon dioxide agent and a stability improver to realize synergistic interaction, so that the antibacterial durability and the abrasion resistance of the product are improved in a coordinated manner, and the product is excellent in performance stability under scrubbing conditions and cold and hot impact conditions.
Description
Technical Field
The invention relates to the technical field of titanium paint, in particular to a titanium paint for a cooking utensil and a preparation method thereof.
Background
In the present society, along with the continuous improvement of the living standard of people, the non-stick coating with single function in kitchen ware products, especially cookware, is difficult to meet the requirement of consumers on the diversification of the functions of the products; the non-stick cookware is generally prepared by coating a surface of a base material with a composite non-stick coating, and the commonly used composite non-stick coating includes a fluorine-containing coating, a ceramic coating and the like.
The fluorine-containing coating adopted by the existing cooking utensil has excellent non-stick performance, but has poor antibacterial performance, nano titanium powder is added for improving the antibacterial performance, but the addition of the nano titanium powder can cause the problems of poor interfacial property of raw materials and easy agglomeration of raw materials, so that the antibacterial durability is affected, meanwhile, the wear resistance and the antibacterial durability are difficult to coordinate and improve, and the performance stability of the product under scrubbing conditions and cold and hot impact conditions is poor, so that the service efficiency of the fluorine-containing coating product is further limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a titanium coating for a cooking utensil and a preparation method thereof, so as to solve the problems in the prior art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides a titanium coating for a cooking utensil, which comprises the following raw materials in parts by weight:
65-75 parts of polytetrafluoroethylene, 8-12 parts of polyether sulfone, 6-10 parts of nano titanium dioxide, 3-5 parts of silicon nitride and 5-8 parts of wollastonite regulated nano silicon dioxide.
Preferably, the cooking utensil titanium coating further comprises the following raw materials in parts by weight:
70 parts of polytetrafluoroethylene, 10 parts of polyethersulfone, 8 parts of nano titanium dioxide, 4 parts of silicon nitride and 6.5 parts of wollastonite for regulating the nano silicon dioxide agent.
Preferably, the wollastonite modified nano-silica agent is prepared by the following steps:
S01: firstly placing nano silicon dioxide into a sufficient amount of sodium dodecyl benzene sulfonate solution with the mass fraction of 10%, fully mixing, then washing with water and drying to obtain a surface-treated nano silicon dioxide agent;
S02: fully mixing 2-5 parts of sodium alginate, 4-7 parts of chitosan solution with mass fraction of 5% and 1-3 parts of stearic acid to obtain modified liquid;
Placing the surface-treated nano silicon dioxide agent into a modifying solution with the total amount being 3-5 times of that of the modifying solution, stirring and modifying, washing with water and drying to obtain a modified nano silicon dioxide body;
S03: and (3) uniformly mixing the wollastonite regulator and the modified nano silicon dioxide body according to the weight ratio of 2 (5-6), ball milling at the ball milling rotating speed of 1000-1500 r/min for 1-2h, washing with water and drying to obtain the wollastonite regulated nano silicon dioxide.
Preferably, the stirring temperature of the stirring modification treatment is 45-50 ℃, the stirring rotating speed is 350-400r/min, and the stirring time is 35-40min.
Preferably, the wollastonite regulator is prepared by the following steps:
Sequentially adding 3-6 parts by weight of wollastonite, 2-5 parts by weight of silane coupling agent and 1-3 parts by weight of sodium silicate solution into 4-7 parts by weight of sodium lignin sulfonate solution with the mass fraction of 8%, and finally adding 1-2 parts of urea, and fully mixing to obtain the wollastonite regulator.
Preferably, the silane coupling agent is a silane coupling agent KH560; the mass fraction of the sodium silicate solution is 4-8%.
Preferably, the titanium paint for the cooking utensil further comprises 4-7 parts of stability improver;
the preparation method of the stability improver comprises the following steps:
S101: and (3) heat adjustment treatment of nano mica powder:
Heating the nano mica powder to 310-330 ℃ at the speed of 4-6 ℃/min, preserving heat for 5-10 min, then heating to 430-440 ℃ at the speed of 3-5 ℃/min, preserving heat for 2-5 min, and finally cooling to 55 ℃ at the speed of 1-2 ℃/min, and preserving heat;
S102: fully mixing 4-7 parts of graphene, 1-3 parts of carboxymethyl cellulose, 2-5 parts of phosphoric acid buffer solution and 6-10 parts of sodium citrate solution to obtain a graphene modifier;
S103: mixing and ball milling the nano mica powder and the graphene modifier subjected to heat regulation treatment according to a weight ratio of 5:3, wherein the ball milling rotating speed is 1500r/min, ball milling is carried out for 2 hours, and after ball milling, water washing and drying are carried out, so that the stability improver is obtained.
Preferably, the pH of the phosphate buffer solution is 5.0; the mass fraction of the sodium citrate solution is 10-15%.
The invention also provides a preparation method of the titanium coating for the cooking utensil, which comprises the following steps:
Uniformly mixing polytetrafluoroethylene and polyethersulfone, heating to obtain a mixed material, and then adding nano titanium dioxide, silicon nitride, wollastonite to regulate nano silicon dioxide agent and stability improver into the mixed material, and fully mixing to obtain the titanium coating for the cooking utensil.
Preferably, the temperature of the uniform mixing and heating is 510-520 ℃, and the uniform mixing time is 5-7 h.
Compared with the prior art, the invention has the following beneficial effects:
According to the titanium coating for the cooking utensil, polytetrafluoroethylene and polyethersulfone are matched with each other to serve as a base material, the antibacterial property of the product is enhanced by adding nano titanium dioxide, the abrasion resistance of the product is improved by adding silicon nitride, and wollastonite is used for adjusting the mutual cooperation of a nano silicon dioxide agent and a stability improver to realize synergistic interaction, so that the antibacterial durability and the abrasion resistance of the product are improved in a coordinated manner, and the product is excellent in performance stability under scrubbing conditions and cold and hot impact conditions;
The wollastonite adjusting nano silicon dioxide agent adopts nano silicon dioxide to be treated by a sodium dodecyl benzene sulfonate solution to optimize the activity efficiency, then adopts modified liquid obtained by blending and modifying sodium alginate, chitosan solution with the mass fraction of 5% and stearic acid to coordinate and modify the nano silicon dioxide, the activity degree and the dispersity of the modified nano silicon dioxide are obviously improved, the nano silicon dioxide with high specific surface area is taken as a mesosome, the interfacial compatibility between raw materials can be enhanced, and meanwhile, the adopted wollastonite adjusting agent further coordinates and modifies the modified nano silicon dioxide body, and the wollastonite adjusting agent adopts wollastonite, a silane coupling agent, a sodium silicate solution, a sodium lignin sulfonate solution and urea to coordinate and modify, and adopts wollastonite as a reinforcing coordinator to enhance the synergistic effect of the nano silicon dioxide, and meanwhile, the silane coupling agent, the sodium silicate solution, the sodium lignin sulfonate solution and urea coordinate mutually and modify mutually, so that the obtained wollastonite adjusting nano silicon dioxide agent can enhance the antibacterial durability and the wear-resisting coordination of the system in the system;
The stability improver adopts nano mica powder as a lamellar body, the stability of the system is optimized in a penetrating system, meanwhile, the temperature is firstly increased to 310-330 ℃ at the speed of 4-6 ℃/min through the nano mica powder, the temperature is kept for 5-10 min, then the temperature is increased to 430-440 ℃ at the speed of 3-5 ℃/min, the temperature is kept for 2-5 min, finally the temperature is cooled to 55 ℃ at the speed of 1-2 ℃/min, continuous heat improvement treatment is carried out, the lamellar layer spacing is optimized, the lamellar accommodation degree is improved, meanwhile, graphene, carboxymethyl cellulose, phosphoric acid buffer solution and sodium citrate solution are blended to obtain the graphene modifier, the graphene lamellar structure is supplemented into lamellar bentonite spacing, the scrubbing resistance and the cold heat shock resistance performance stability of the stability improver on a product system are optimized, and meanwhile, the synergistic improvement effect of the graphene modifier and the nano mica powder subjected to heat adjustment treatment is enhanced through the cooperation between graphene modifier raw materials, so that the performance stability of the product is further improved.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The titanium coating for the cooking utensil comprises the following raw materials in parts by weight:
65-75 parts of polytetrafluoroethylene, 8-12 parts of polyether sulfone, 6-10 parts of nano titanium dioxide, 3-5 parts of silicon nitride and 5-8 parts of wollastonite regulated nano silicon dioxide.
The titanium coating for the cooking utensil of the embodiment further comprises the following raw materials in parts by weight:
70 parts of polytetrafluoroethylene, 10 parts of polyethersulfone, 8 parts of nano titanium dioxide, 4 parts of silicon nitride and 6.5 parts of wollastonite for regulating the nano silicon dioxide agent.
The preparation method of the wollastonite modified nano silica agent in the embodiment comprises the following steps:
S01: firstly placing nano silicon dioxide into a sufficient amount of sodium dodecyl benzene sulfonate solution with the mass fraction of 10%, fully mixing, then washing with water and drying to obtain a surface-treated nano silicon dioxide agent;
S02: fully mixing 2-5 parts of sodium alginate, 4-7 parts of chitosan solution with mass fraction of 5% and 1-3 parts of stearic acid to obtain modified liquid;
Placing the surface-treated nano silicon dioxide agent into a modifying solution with the total amount being 3-5 times of that of the modifying solution, stirring and modifying, washing with water and drying to obtain a modified nano silicon dioxide body;
S03: and (3) uniformly mixing the wollastonite regulator and the modified nano silicon dioxide body according to the weight ratio of 2 (5-6), ball milling at the ball milling rotating speed of 1000-1500 r/min for 1-2h, washing with water and drying to obtain the wollastonite regulated nano silicon dioxide.
The stirring temperature of the stirring modification treatment is 45-50 ℃, the stirring rotating speed is 350-400r/min, and the stirring time is 35-40min.
The preparation method of the wollastonite regulator in the embodiment comprises the following steps:
Sequentially adding 3-6 parts by weight of wollastonite, 2-5 parts by weight of silane coupling agent and 1-3 parts by weight of sodium silicate solution into 4-7 parts by weight of sodium lignin sulfonate solution with the mass fraction of 8%, and finally adding 1-2 parts of urea, and fully mixing to obtain the wollastonite regulator.
The silane coupling agent of this example is a silane coupling agent KH560; the mass fraction of the sodium silicate solution is 4-8%.
The titanium coating for the cooking utensil further comprises 4-7 parts of stability improver;
the preparation method of the stability improver comprises the following steps:
S101: and (3) heat adjustment treatment of nano mica powder:
Heating the nano mica powder to 310-330 ℃ at the speed of 4-6 ℃/min, preserving heat for 5-10 min, then heating to 430-440 ℃ at the speed of 3-5 ℃/min, preserving heat for 2-5 min, and finally cooling to 55 ℃ at the speed of 1-2 ℃/min, and preserving heat;
S102: fully mixing 4-7 parts of graphene, 1-3 parts of carboxymethyl cellulose, 2-5 parts of phosphoric acid buffer solution and 6-10 parts of sodium citrate solution to obtain a graphene modifier;
S103: mixing and ball milling the nano mica powder and the graphene modifier subjected to heat regulation treatment according to a weight ratio of 5:3, wherein the ball milling rotating speed is 1500r/min, ball milling is carried out for 2 hours, and after ball milling, water washing and drying are carried out, so that the stability improver is obtained.
The pH of the phosphate buffer solution of this example was 5.0; the mass fraction of the sodium citrate solution is 10-15%.
The preparation method of the titanium coating for the cooking utensil comprises the following steps:
Uniformly mixing polytetrafluoroethylene and polyethersulfone, heating to obtain a mixed material, and then adding nano titanium dioxide, silicon nitride, wollastonite to regulate nano silicon dioxide agent and stability improver into the mixed material, and fully mixing to obtain the titanium coating for the cooking utensil.
The temperature of the uniform mixing and heating in the embodiment is 510-520 ℃, and the uniform mixing time is 5-7 h.
Example 1.
The titanium coating for the cooking utensil comprises the following raw materials in parts by weight:
65 parts of polytetrafluoroethylene, 8 parts of polyethersulfone, 6 parts of nano titanium dioxide, 3 parts of silicon nitride and 5 parts of wollastonite for regulating the nano silicon dioxide agent.
The preparation method of the wollastonite modified nano silica agent in the embodiment comprises the following steps:
S01: firstly placing nano silicon dioxide into a sufficient amount of sodium dodecyl benzene sulfonate solution with the mass fraction of 10%, fully mixing, then washing with water and drying to obtain a surface-treated nano silicon dioxide agent;
S02: fully mixing 2 parts of sodium alginate, 4 parts of chitosan solution with mass fraction of 5% and 1 part of stearic acid to obtain modified liquid;
placing the surface-treated nano silicon dioxide agent into a modifying solution with the total amount being 3 times, stirring and modifying, washing with water and drying to obtain a modified nano silicon dioxide body;
S03: uniformly mixing the wollastonite regulator and the modified nano silicon dioxide body according to the weight ratio of 2:5, performing ball milling treatment at the ball milling rotating speed of 1000r/min for 1h, and performing water washing and drying after ball milling is finished to obtain the wollastonite regulated nano silicon dioxide.
The stirring temperature of the stirring modification treatment in this example was 45℃and the stirring speed was 350r/min, and the stirring time was 35min.
The preparation method of the wollastonite regulator in the embodiment comprises the following steps:
Sequentially adding 3 parts by weight of wollastonite, 2 parts by weight of a silane coupling agent and 1 part by weight of a sodium silicate solution into 4 parts by weight of a sodium lignin sulfonate solution with the mass fraction of 8%, and finally adding 1 part of urea, and fully mixing to obtain the wollastonite regulator.
The silane coupling agent of this example is a silane coupling agent KH560; the mass fraction of the sodium silicate solution is 4%.
The titanium coating for the cooking utensil of the embodiment also comprises 4 parts of stability improver;
the preparation method of the stability improver comprises the following steps:
S101: and (3) heat adjustment treatment of nano mica powder:
heating the nano mica powder to 310 ℃ at the speed of 4 ℃/min, preserving heat for 5min, then heating to 430 ℃ at the speed of 3 ℃/min, preserving heat for 2min, and finally cooling to 55 ℃ at the speed of 1 ℃/min, and preserving heat;
S102: fully mixing 4 parts of graphene, 1 part of carboxymethyl cellulose, 2 parts of phosphoric acid buffer solution and 6 parts of sodium citrate solution to obtain a graphene modifier;
S103: mixing and ball milling the nano mica powder and the graphene modifier subjected to heat regulation treatment according to a weight ratio of 5:3, wherein the ball milling rotating speed is 1500r/min, ball milling is carried out for 2 hours, and after ball milling, water washing and drying are carried out, so that the stability improver is obtained.
The pH of the phosphate buffer solution of this example was 5.0; the mass fraction of the sodium citrate solution is 10%.
The preparation method of the titanium coating for the cooking utensil comprises the following steps:
Uniformly mixing polytetrafluoroethylene and polyethersulfone, heating to obtain a mixed material, and then adding nano titanium dioxide, silicon nitride, wollastonite to regulate nano silicon dioxide agent and stability improver into the mixed material, and fully mixing to obtain the titanium coating for the cooking utensil.
The temperature of the mixing and heating in this example was 510℃and the mixing time was 5 hours.
Example 2.
The titanium coating for the cooking utensil comprises the following raw materials in parts by weight:
75 parts of polytetrafluoroethylene, 12 parts of polyethersulfone, 10 parts of nano titanium dioxide, 5 parts of silicon nitride and 8 parts of wollastonite to regulate the nano silicon dioxide agent.
The preparation method of the wollastonite modified nano silica agent in the embodiment comprises the following steps:
S01: firstly placing nano silicon dioxide into a sufficient amount of sodium dodecyl benzene sulfonate solution with the mass fraction of 10%, fully mixing, then washing with water and drying to obtain a surface-treated nano silicon dioxide agent;
S02: fully mixing 5 parts of sodium alginate, 7 parts of chitosan solution with mass fraction of 5% and 3 parts of stearic acid to obtain modified liquid;
Placing the surface-treated nano silicon dioxide agent into a modifying solution with the total amount being 5 times, stirring and modifying, washing with water and drying to obtain a modified nano silicon dioxide body;
s03: uniformly mixing the wollastonite regulator and the modified nano silicon dioxide body according to the weight ratio of 1:3, performing ball milling treatment at the ball milling rotating speed of 1500r/min for 2h, and performing water washing and drying after ball milling to obtain the wollastonite regulated nano silicon dioxide.
The stirring temperature for the stirring modification treatment in this example was 50℃and the stirring speed was 400r/min and the stirring time was 40min.
The preparation method of the wollastonite regulator in the embodiment comprises the following steps:
6 parts by weight of wollastonite, 5 parts by weight of silane coupling agent and 3 parts by weight of sodium silicate solution are sequentially added into 7 parts by weight of sodium lignin sulfonate solution with the mass fraction of 8%, and finally 2 parts of urea is added, and the mixture is fully mixed to obtain the wollastonite regulator.
The silane coupling agent of this example is a silane coupling agent KH560; the mass fraction of the sodium silicate solution is 8%.
The titanium paint for the cooking utensil of the embodiment also comprises 7 parts of stability improver;
the preparation method of the stability improver comprises the following steps:
S101: and (3) heat adjustment treatment of nano mica powder:
Heating the nano mica powder to 330 ℃ at a speed of 6 ℃/min, preserving heat for 10min, then heating to 440 ℃ at a speed of 5 ℃/min, preserving heat for 5min, and finally cooling to 55 ℃ at a speed of 2 ℃/min, and preserving heat;
S102: fully mixing 7 parts of graphene, 3 parts of carboxymethyl cellulose, 5 parts of phosphoric acid buffer solution and 10 parts of sodium citrate solution to obtain a graphene modifier;
S103: mixing and ball milling the nano mica powder and the graphene modifier subjected to heat regulation treatment according to a weight ratio of 5:3, wherein the ball milling rotating speed is 1500r/min, ball milling is carried out for 2 hours, and after ball milling, water washing and drying are carried out, so that the stability improver is obtained.
The pH of the phosphate buffer solution of this example was 5.0; the mass fraction of the sodium citrate solution is 15%.
The preparation method of the titanium coating for the cooking utensil comprises the following steps:
Uniformly mixing polytetrafluoroethylene and polyethersulfone, heating to obtain a mixed material, and then adding nano titanium dioxide, silicon nitride, wollastonite to regulate nano silicon dioxide agent and stability improver into the mixed material, and fully mixing to obtain the titanium coating for the cooking utensil.
The temperature of the mixing and heating in this example was 520℃and the mixing time was 7 hours.
Example 3.
The titanium coating for the cooking utensil comprises the following raw materials in parts by weight:
70 parts of polytetrafluoroethylene, 10 parts of polyethersulfone, 8 parts of nano titanium dioxide, 4 parts of silicon nitride and 6.5 parts of wollastonite for regulating the nano silicon dioxide agent.
The preparation method of the wollastonite modified nano silica agent in the embodiment comprises the following steps:
S01: firstly placing nano silicon dioxide into a sufficient amount of sodium dodecyl benzene sulfonate solution with the mass fraction of 10%, fully mixing, then washing with water and drying to obtain a surface-treated nano silicon dioxide agent;
S02: fully mixing 3.5 parts of sodium alginate, 5.5 parts of chitosan solution with mass fraction of 5% and 2 parts of stearic acid to obtain modified liquid;
Placing the surface-treated nano silicon dioxide agent into a modifying solution with the total amount being 4 times, stirring and modifying, washing with water and drying to obtain a modified nano silicon dioxide body;
s03: uniformly mixing the wollastonite regulator and the modified nano silicon dioxide body according to the weight ratio of 2:5.5, performing ball milling treatment, wherein the ball milling rotating speed is 1250r/min, performing ball milling for 1-2 h, and performing water washing and drying after the ball milling is finished to obtain the wollastonite regulated nano silicon dioxide.
The stirring temperature for the stirring modification treatment in this example was 47℃and the stirring speed was 375r/min, and the stirring time was 37min.
The preparation method of the wollastonite regulator in the embodiment comprises the following steps:
4.5 parts by weight of wollastonite, 3.5 parts by weight of silane coupling agent and 2 parts by weight of sodium silicate solution are sequentially added into 5.5 parts by weight of sodium lignin sulfonate solution with the mass fraction of 8%, and finally 1.5 parts of urea is added and fully mixed to obtain the wollastonite regulator.
The silane coupling agent of this example is a silane coupling agent KH560; the mass fraction of the sodium silicate solution is 6%.
The titanium coating for the cooking utensil of the embodiment also comprises 5.5 parts of stability improver;
the preparation method of the stability improver comprises the following steps:
S101: and (3) heat adjustment treatment of nano mica powder:
Heating the nano mica powder to 320 ℃ at a speed of 5 ℃/min, preserving heat for 7.5min, then heating to 435 ℃ at a speed of 4 ℃/min, preserving heat for 3.5min, and finally cooling to 55 ℃ at a speed of 1.5 ℃/min, and preserving heat;
S102: fully mixing 5.5 parts of graphene, 2 parts of carboxymethyl cellulose, 3.5 parts of phosphoric acid buffer solution and 8 parts of sodium citrate solution to obtain a graphene modifier;
S103: mixing and ball milling the nano mica powder and the graphene modifier subjected to heat regulation treatment according to a weight ratio of 5:3, wherein the ball milling rotating speed is 1500r/min, ball milling is carried out for 2 hours, and after ball milling, water washing and drying are carried out, so that the stability improver is obtained.
The pH of the phosphate buffer solution of this example was 5.0; the mass fraction of the sodium citrate solution is 12.5%.
The preparation method of the titanium coating for the cooking utensil comprises the following steps:
Uniformly mixing polytetrafluoroethylene and polyethersulfone, heating to obtain a mixed material, and then adding nano titanium dioxide, silicon nitride, wollastonite to regulate nano silicon dioxide agent and stability improver into the mixed material, and fully mixing to obtain the titanium coating for the cooking utensil.
The temperature of the mixing and heating in this example was 515℃and the mixing time was 6 hours.
Comparative example 1.
The difference from example 3 is that wollastonite was not added to adjust the nanosilica.
Comparative example 2.
The difference from example 3 is that the wollastonite modified nanosilica preparation does not use the S01 treatment.
Comparative example 3.
The difference from example 3 is that wollastonite modified nanosilica agents were prepared without treatment with a modifying liquid.
Comparative example 4.
The difference from example 3 is that sodium alginate and stearic acid are not added in the preparation of the modified liquid.
Comparative example 5.
The difference from example 3 is that wollastonite modified nanosilica formulations were prepared without treatment with wollastonite modifier.
Comparative example 6.
The difference from example 3 is that no stability improver was added.
Comparative example 7.
The difference from example 3 is that the stability improver was prepared without the treatment of S101.
Comparative example 8.
The difference from example 3 is that no further temperature rise to 435℃at a rate of 4℃per minute was employed in the S101 treatment, and the incubation was carried out for 3.5min.
Comparative example 9.
The difference from example 3 is that the stability improver was not treated with the graphene modifier in the preparation.
Comparative example 10.
Unlike example 3, no graphene was added to the graphene modifier.
Comparative example 11.
Unlike example 3, no carboxymethyl cellulose and no phosphate buffer solution were added to the graphene modifier.
The products of examples 1-3 and comparative examples 1-11 were coated on a substrate to a thickness of 2mm, and then the products were tested for antimicrobial durability (12 h antimicrobial property, 72h antimicrobial property) and abrasion resistance (200 cycles of grinding wheel under a 250g weight); the performance measurement results are as follows
From examples 1-3 and comparative examples 1-11, the product of example 3 of the present invention can realize coordinated improvement of antibacterial durability and wear resistance under conventional conditions, and the antibacterial rate of the product at 72h is as high as 99.8% or more.
Scrubbing the coating for 50 times by adopting a steel wire ball, and testing scrubbing resistance;
Heating the coating at 270 ℃ for 1h, then impacting with cold water for 5min, wherein the impact strength is 10MPa, and the cycle is 10 times, so as to test the cold and hot impact properties;
From the conventional test of the antibacterial rate and the wear resistance of the escherichia coli, the cold-hot impact performance and the scrubbing resistance are tested, the following conclusion is drawn:
The wollastonite is not added to regulate the nano silicon dioxide agent, the stability improver is not added, the stability of the product against cold and hot shock and scrubbing resistance is obviously deteriorated, meanwhile, the stability improver is not added, the stability of the product is obviously deteriorated, and the wollastonite is adopted to regulate the nano silicon dioxide agent and the stability improver, so that the performance coordination effect of the product is most obvious;
The wollastonite modified nano silicon dioxide agent prepared by the specific method has a tendency of deterioration in performance, and the modified liquid prepared by the specific method and the wollastonite modified nano silicon dioxide agent obtained by the wollastonite modified nano silicon dioxide agent treatment have the most obvious performance effect, and other methods are adopted to replace the wollastonite modified nano silicon dioxide agent which has less obvious effect than the method;
Meanwhile, the stability improver is not treated by S101, is not treated by S101 and is heated to 435 ℃ at the speed of 4 ℃/min, is insulated for 3.5min, is not treated by graphene modifier, is not added with graphene, is not added with carboxymethyl cellulose and phosphoric acid buffer solution, and has the characteristic of uniformly deteriorating, and the stability improver treated by S101 and the specific graphene modifier has the most obvious characteristic stability effect.
From the performance test, the scrubbing resistance test of the product has the greatest influence on the product, and the wollastonite regulator is not adopted for treatment in the preparation of the wollastonite regulating nano silicon dioxide agent, so that the performance change trend of the product is also larger, and the performance study of the wollastonite regulator treatment on the product is explored based on the scrubbing resistance test, and the test is as follows:
the preparation method of the wollastonite regulator comprises the following steps:
4.5 parts by weight of wollastonite, 3.5 parts by weight of silane coupling agent and 2 parts by weight of sodium silicate solution are sequentially added into 5.5 parts by weight of sodium lignin sulfonate solution with the mass fraction of 8%, and finally 1.5 parts of urea is added and fully mixed to obtain the wollastonite regulator.
The silane coupling agent of this example is a silane coupling agent KH560; the mass fraction of the sodium silicate solution is 6%.
Experimental example 1.
The only difference from example 3 is that wollastonite is not added in the preparation of the wollastonite regulator.
Experimental example 2.
The only difference from example 3 is that no silane coupling agent was added in the preparation of the wollastonite regulator.
Experimental example 3.
The only difference from example 3 is that no urea was added in the preparation of the wollastonite regulator.
Experimental example 4.
The only difference from example 3 is that no sodium silicate solution was added to the preparation of the wollastonite regulator.
Experimental example 5.
Except that the sodium lignin sulfonate solution was replaced with deionized water in the preparation of wollastonite regulator as in example 3.
As can be seen from experimental examples 1-5, wollastonite is not added in the preparation of the wollastonite regulator, the performance change trend of the product is the largest in the preparation factors of the wollastonite regulator, and then sodium silicate solution is not added, meanwhile, silane coupling agent, sodium lignin sulfonate solution and urea are not added in the preparation of the wollastonite regulator, the performance of the product is in a deterioration trend, and the wollastonite regulator obtained by adopting the method and specific raw materials has the most obvious performance effect, and the effect is not as obvious as that of the invention by adopting other methods instead.
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 characteristics 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 disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The titanium coating for the cooking utensil is characterized by comprising the following raw materials in parts by weight:
65-75 parts of polytetrafluoroethylene, 8-12 parts of polyether sulfone, 6-10 parts of nano titanium dioxide, 3-5 parts of silicon nitride and 5-8 parts of wollastonite regulated nano silicon dioxide.
2. The titanium coating for a cooking appliance according to claim 1, further comprising the following raw materials in parts by weight:
70 parts of polytetrafluoroethylene, 10 parts of polyethersulfone, 8 parts of nano titanium dioxide, 4 parts of silicon nitride and 6.5 parts of wollastonite for regulating the nano silicon dioxide agent.
3. The titanium coating for cooking utensils according to claim 1, wherein the preparation method of the wollastonite adjusting nano silica agent is as follows:
S01: firstly placing nano silicon dioxide into a sufficient amount of sodium dodecyl benzene sulfonate solution with the mass fraction of 10%, fully mixing, then washing with water and drying to obtain a surface-treated nano silicon dioxide agent;
S02: fully mixing 2-5 parts of sodium alginate, 4-7 parts of chitosan solution with mass fraction of 5% and 1-3 parts of stearic acid to obtain modified liquid;
Placing the surface-treated nano silicon dioxide agent into a modifying solution with the total amount being 3-5 times of that of the modifying solution, stirring and modifying, washing with water and drying to obtain a modified nano silicon dioxide body;
S03: and (3) uniformly mixing the wollastonite regulator and the modified nano silicon dioxide body according to the weight ratio of 2 (5-6), ball milling at the ball milling rotating speed of 1000-1500 r/min for 1-2h, washing with water and drying to obtain the wollastonite regulated nano silicon dioxide.
4. A titanium coating for a cooking utensil according to claim 3, wherein the stirring temperature of the stirring modification treatment is 45-50 ℃, the stirring rotation speed is 350-400r/min, and the stirring time is 35-40min.
5. A titanium coating for cooking appliances according to claim 3, wherein the wollastonite adjusting agent is prepared by the following steps:
Sequentially adding 3-6 parts by weight of wollastonite, 2-5 parts by weight of silane coupling agent and 1-3 parts by weight of sodium silicate solution into 4-7 parts by weight of sodium lignin sulfonate solution with the mass fraction of 8%, and finally adding 1-2 parts of urea, and fully mixing to obtain the wollastonite regulator.
6. The titanium coating for cooking appliances according to claim 5, wherein the silane coupling agent is a silane coupling agent KH560; the mass fraction of the sodium silicate solution is 4-8%.
7. The titanium coating for a cooking appliance of claim 1, wherein the titanium coating for a cooking appliance further comprises 4 to 7 parts of a stability improver;
the preparation method of the stability improver comprises the following steps:
S101: and (3) heat adjustment treatment of nano mica powder:
Heating the nano mica powder to 310-330 ℃ at the speed of 4-6 ℃/min, preserving heat for 5-10 min, then heating to 430-440 ℃ at the speed of 3-5 ℃/min, preserving heat for 2-5 min, and finally cooling to 55 ℃ at the speed of 1-2 ℃/min, and preserving heat;
S102: fully mixing 4-7 parts of graphene, 1-3 parts of carboxymethyl cellulose, 2-5 parts of phosphoric acid buffer solution and 6-10 parts of sodium citrate solution to obtain a graphene modifier;
S103: mixing and ball milling the nano mica powder and the graphene modifier subjected to heat regulation treatment according to a weight ratio of 5:3, wherein the ball milling rotating speed is 1500r/min, ball milling is carried out for 2 hours, and after ball milling, water washing and drying are carried out, so that the stability improver is obtained.
8. The titanium coating for a cooking appliance of claim 7, wherein said phosphate buffer solution has a pH of 5.0; the mass fraction of the sodium citrate solution is 10-15%.
9. A method for preparing the titanium coating for the cooking utensil according to any one of claims 1 to 8, comprising the following steps:
Uniformly mixing polytetrafluoroethylene and polyethersulfone, heating to obtain a mixed material, and then adding nano titanium dioxide, silicon nitride, wollastonite to regulate nano silicon dioxide agent and stability improver into the mixed material, and fully mixing to obtain the titanium coating for the cooking utensil.
10. The preparation method of the titanium coating for the cooking utensil according to claim 9, wherein the temperature for uniformly mixing and heating is 510-520 ℃, and the mixing time is 5-7 h.
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