CN115975419A - Preparation method of tire self-repairing coating based on ion-dipole effect - Google Patents
Preparation method of tire self-repairing coating based on ion-dipole effect Download PDFInfo
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- CN115975419A CN115975419A CN202211547856.1A CN202211547856A CN115975419A CN 115975419 A CN115975419 A CN 115975419A CN 202211547856 A CN202211547856 A CN 202211547856A CN 115975419 A CN115975419 A CN 115975419A
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- 238000000576 coating method Methods 0.000 title claims abstract description 55
- 239000011248 coating agent Substances 0.000 title claims abstract description 53
- 230000000694 effects Effects 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- 239000004927 clay Substances 0.000 claims description 14
- 239000000017 hydrogel Substances 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 8
- BCAIDFOKQCVACE-UHFFFAOYSA-N 3-[dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azaniumyl]propane-1-sulfonate Chemical compound CC(=C)C(=O)OCC[N+](C)(C)CCCS([O-])(=O)=O BCAIDFOKQCVACE-UHFFFAOYSA-N 0.000 claims description 8
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 8
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical group [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 8
- DEQJNIVTRAWAMD-UHFFFAOYSA-N 1,1,2,4,4,4-hexafluorobutyl prop-2-enoate Chemical compound FC(F)(F)CC(F)C(F)(F)OC(=O)C=C DEQJNIVTRAWAMD-UHFFFAOYSA-N 0.000 claims description 6
- -1 1- (6- (acryloyloxy) -hexyl) -3-ethylimidazoline Chemical compound 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000004821 distillation Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 238000010526 radical polymerization reaction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052731 fluorine Inorganic materials 0.000 abstract description 7
- 239000011737 fluorine Substances 0.000 abstract description 7
- 238000004132 cross linking Methods 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000004043 responsiveness Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 11
- 229920001577 copolymer Polymers 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 150000002466 imines Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Tires In General (AREA)
Abstract
The invention belongs to the field of high-molecular self-repairing materials, and discloses a preparation method of a tire self-repairing coating based on an ion-dipole effect. The method provides physical crosslinking interaction by introducing ion-dipole effect, improves the adhesiveness, responsiveness and self-repairability of the coating, enables the coating to be uniformly and firmly adhered to the automobile tire, and can quickly self-repair when the interior of the tire is punctured at any angle. By adding fluorine-containing substances into the coating, the ductility of the coating is optimized, and the self-repairing wound range and the self-repairing time of the coating are improved. The coating disclosed by the invention has good responsiveness, self-repairing property and ductility, can realize instant self-repairing when the automobile is subjected to random mechanical puncture in the driving process, and has important significance for ensuring the safety of the automobile in the driving process.
Description
Technical Field
The invention belongs to the field of high-molecular self-repairing materials, and particularly relates to a preparation method of a tire self-repairing coating based on an ion-dipole effect.
Background
The tyre of the automobile can be stressed by high-frequency stress in the using process, and is easily punctured by hard objects on the road surface, and leaks appear on the inner surface of the tyre. If the automobile is not found and repaired in time, under the action of continuous stress, the gas in the tire can leak, the tire pressure is reduced, and the automobile is out of control and is in danger of side turning and the like.
A tire characteristic parameter test bed dynamic monitoring system is designed for avoiding tragic events caused by tire performance deterioration, zhang Yu and the like, but the terminal monitoring system has only an early warning function and cannot provide help for recovery of tire performance, and particularly, when the automobile runs at high speed, the tire performance mutation causes the automobile to be out of control. In recent years, many studies have been made on self-repair of tires. Such as: sumitomo rubber industries, inc. uses a porous sound absorbing material to be introduced into the inside of a tire through an opening of the tire, thereby realizing self-repair of the tire, but requires special equipment and temperature conditions, and is difficult to repair instantly in service. In the field of automobile tire manufacturing, few researchers have studied self-healing tire coatings. Therefore, the tire coating which can be self-repaired instantly without external intervention is developed, and the method has important significance for guaranteeing safe traveling of the automobile.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides a preparation method of a tire self-repairing coating based on an ion-dipole effect, aiming at providing a physical crosslinking interaction by introducing the ion-dipole effect, improving the adhesiveness, the responsiveness and the self-repairing property of the coating, optimizing the ductility of the coating by adding fluorine, and improving the self-repairing wound range and the repairing time of the coating. The invention can effectively solve the problem of dependence of the existing self-repairing tire on the repairing environment, and realize the instant non-intervention repair of the tire damage under any driving condition.
1. Preparation method of tire self-repairing coating based on ion-dipole effect
In order to achieve the aim, the invention provides a preparation method of a tire self-repairing coating based on ion-dipole effect, which is characterized in that the prepared coating can quickly respond to a damaged part and instantly complete self-repairing. The method comprises the following steps:
(1) Uniformly dispersing clay in deionized water to prepare clay suspension;
(2) Respectively adding a certain amount of [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide, hydroxyethyl methacrylate and an initiator into a beaker to prepare a solution;
(3) Adding the clay suspension prepared in the step (1) into the solution prepared in the step (2) by using a constant-pressure dropping funnel, and fully dissolving;
(4) Adding 1- (6- (acryloyloxy) -hexyl) -3-ethylimidazoline bis (trifluoromethylsulfonyl) imide to prepare a solution;
(5) Coating the solution on a glass plate, standing at room temperature for 12h, performing free radical polymerization, and copolymerizing to obtain viscous hydrogel;
(6) Dissolving hexafluorobutyl acrylate and viscous hydrogel in acetone, and fully dissolving;
(7) And removing the acetone solvent by reduced pressure distillation at the temperature of 40 +/-2 ℃ to finally obtain the tire self-repairing coating based on the ion-dipole effect.
Further preferably, in the step (1), the concentration of the clay suspension is 0.04-0.08mol/L;
further preferably, in the step (2), the initiator is potassium persulfate, the mass ratio of [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide to hydroxyethyl methacrylate is 20-2;
further preferably, in the step (4), the molar ratio of the 1- (6- (acryloyloxy) -hexyl) -3-ethylimidazoline bis (trifluoromethylsulfonyl) imide to the potassium persulfate is 2.5;
further preferably, in the step (6), the hexafluorobutyl acrylate accounts for 2 to 8 mol% of the whole.
2. Performance test of tire self-repairing coating based on ion-dipole effect
The prepared self-repairing coating of the tire based on the ion-dipole effect is injected into the tire, so that the self-repairing coating of the tire is uniformly covered on the inner surface of the tire, and then the tire is inflated to the normal tire pressure. After being placed in the shade at room temperature, four tires are all bridge cars filled with fluorine-containing copolymer coatings under the condition of normal tire pressure, and the bridge cars respectively drive through the nail plates at the speed of 10-100 km/h. The nail plate is respectively provided with a nail with the length of 5cm and the maximum diameter of 1cm at the left tire and the right tire, and the direction of the nail is different from the ground surface angle of 15-90 degrees and is randomly arranged. After respectively pricking the front and rear tires of the automobile, the automobile is stopped after continuously running for 10s, the tire pressure, the tire air tightness and the surface damage condition of the tires are checked, then the next working condition test is continuously carried out,
after 10s after puncture, the tire pressure slightly decreases to different degrees, but the tire pressure is higher than 2.4bar, and the running vehicle does not shake obviously. The tire has good air tightness, and the damaged part of the surface is sealed by the self-repairing coating after flowing out.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1. according to the invention, a cationic quaternary amine group and an anionic sulfonic acid group are introduced firstly, and are copolymerized to form an interchain dipole-dipole effect, so that a physical crosslinking interaction is provided, and the section self-repairing capability of the coating is enhanced. And then introducing an ionic monomer to convert the dipole-dipole effect into the ion-dipole effect, so that the adhesive property of the coating is improved. Finally, the fluorine-containing substance is added, so that the mechanical property of the coating is improved, and the coating has better ductility.
2. The test condition adopted by the invention is to simulate a real driving scene, the test speed covers low-speed, medium-speed and high-speed driving, and the nail angles are different. Even if the tire underwent 10 nail pricking tests, the four tires remained well airtight, with the tire pressure slightly decreasing but in the normal range.
3. The tire self-repairing coating based on the ion-dipole effect, even if punctured for many times, can respond immediately when the tire is punctured by a sharp object, and can complete section self-repairing within 10 s. Has important significance for the safety guarantee of the automobile in the driving process.
Drawings
FIG. 1 is a schematic representation of the experimental preparation of the present invention constructed in accordance with a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
(1) Uniformly dispersing clay in deionized water to prepare clay suspension with the concentration of 0.04 mol/L;
(2) Adding [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide and hydroxyethyl methacrylate into a beaker respectively to prepare a solution, wherein the mass ratio of the [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide to the hydroxyethyl methacrylate to the potassium persulfate is 1500;
(3) Adding the clay suspension prepared in the step (1) into the solution prepared in the step (2) by using a constant-pressure dropping funnel, and fully dissolving;
(4) Adding 1- (6- (acryloyloxy) -hexyl) -3-ethylimidazoline bis (trifluoromethylsulfonyl) imide (the molar ratio of the 1- (trifluoromethyl) sulfonyl) imide to potassium persulfate is 1);
(5) Coating the solution on a glass plate, standing at room temperature for 12h, performing free radical polymerization, and copolymerizing to obtain viscous hydrogel;
(6) Dissolving hexafluorobutyl acrylate (accounting for 2 percent of the total mol) and viscous hydrogel in acetone, and fully dissolving;
(7) Removing the acetone solvent by reduced pressure distillation at the temperature of 42 ℃, adding the acetone solvent into the viscous hydrogel, and finally obtaining the tire self-repairing coating based on the ion-dipole effect.
(8) The prepared tire self-repairing coating based on the ion-dipole effect is coated into a 175/70R 1477H tire, so that the tire self-repairing coating is uniformly covered on the inner surface of the tire, and then the tire self-repairing coating is inflated to the normal tire pressure. After the bridge is placed in the shade at room temperature for 24 hours, four tires are driven by the nail plate at the speed of 10-100km/h respectively under the condition that the tire pressure is 2.5bar and the bridge is filled with the fluorine-containing copolymer coating. The nail plate is provided with a nail with the length of 5cm and the maximum diameter of 1cm at the left tire and the right tire respectively, and the directions of the nail and the ground are respectively 15 degrees, 30 degrees, 45 degrees and 60 degrees and are randomly arranged. After respectively pricking four tires at the front side and the rear side of the automobile, the automobile stops after continuously running for 10s, the tire pressure, the tire air tightness and the surface damage condition of the tires are checked, then the next working condition test is continuously carried out,
the testing speed is carried out according to the gradient of every 10km/h, the total testing is carried out for 10 times, the vehicle speed is increased from 10km/h to 100km/h, the tire pressure slightly decreases to different degrees after 10s after puncture, but the tire pressure is higher than 2.4bar, and the running vehicle has no obvious shake. The tire has good air tightness, and the damaged part of the surface is sealed by the self-repairing coating after flowing out.
Example 2
(1) Uniformly dispersing clay in deionized water to prepare clay suspension with the concentration of 0.05 mol/L;
(2) Adding [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide, hydroxyethyl methacrylate, [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide, hydroxyethyl methacrylate and potassium persulfate into a beaker in a mass ratio of 500.
(3) Adding the clay suspension prepared in the step (1) into the solution prepared in the step (2) by using a constant-pressure dropping funnel, and fully dissolving;
(4) Adding 1- (6- (acryloyloxy) -hexyl) -3-ethylimidazoline bis (trifluoromethylsulfonyl) imine (the molar ratio of the 1- (trifluoromethylsulfonyl) imine to the potassium persulfate is 1);
(5) Coating the solution on a glass plate, standing at room temperature for 12h, and performing free radical polymerization to obtain viscous hydrogel through copolymerization;
(6) Dissolving hexafluorobutyl acrylate (accounting for 3 percent of the total mol percentage) and the viscous hydrogel in acetone, and fully dissolving;
(7) Removing the acetone solvent by reduced pressure distillation at the temperature of 42 ℃, adding the acetone solvent into the viscous hydrogel, and finally obtaining the tire self-repairing coating based on the ion-dipole effect.
(8) The prepared tire self-repairing coating based on the ion-dipole effect is coated into a 175/70R 1477H tire, so that the tire self-repairing coating is uniformly covered on the inner surface of the tire, and then the tire self-repairing coating is inflated to the normal tire pressure. After the bridge is placed in the shade at room temperature for 24 hours, four tires are driven by the nail plate at the speed of 10-100km/h respectively under the condition that the tire pressure is 2.5bar and the bridge is filled with the fluorine-containing copolymer coating. The nail plate is respectively provided with a nail with the length of 5cm and the maximum diameter of 1cm at the left tire and the right tire, and the directions of the nails and the ground are respectively at 60 degrees, 75 degrees, 90 degrees and are randomly arranged. After respectively pricking four tires at the front side and the rear side of the automobile, the automobile continuously runs for 10s and then stops, the tire pressure, the tire airtightness and the surface damage condition of the tires are checked, then the next working condition test is continuously carried out,
the testing speed is carried out according to the gradient of every 10km/h, the testing is carried out for 10 times in total, the vehicle speed is increased from 10-100km/h, 1 tire pressure is slightly reduced to different degrees after 10s after puncture, but the tire pressure is higher than 2.4bar, and the running vehicle does not shake obviously. The tire has good air tightness, and the damaged part of the surface is sealed by the self-repairing coating after flowing out.
The method of the invention strengthens the physical cross-linking interaction by introducing the ion-dipole effect and fluorine-containing substances, improves the adhesiveness, responsiveness, self-repairability and ductility of the coating, enables the coating to be uniformly and firmly adhered to the automobile tire, can quickly self-repair when the interior of the tire is punctured at any angle, can realize instant self-repair when the automobile is punctured by random machinery during running, and has important significance for the safety guarantee of the automobile during running.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A preparation method of a tire self-repairing coating based on ion-dipole effect is characterized in that the prepared coating can rapidly respond to a damaged part and instantly complete self-repairing, and the method comprises the following steps:
(1) Uniformly dispersing clay in deionized water to prepare clay suspension;
(2) Respectively adding a certain amount of [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide, hydroxyethyl methacrylate and an initiator into a beaker to prepare a solution;
(3) Adding the clay suspension prepared in the step (1) into the solution prepared in the step (2) by using a constant-pressure dropping funnel, and fully dissolving;
(4) Adding 1- (6- (acryloyloxy) -hexyl) -3-ethylimidazoline bis (trifluoromethylsulfonyl) imide to prepare a solution;
(5) Coating the solution on a glass plate, standing at room temperature for 12h, performing free radical polymerization, and copolymerizing to obtain viscous hydrogel;
(6) Dissolving hexafluorobutyl acrylate and adhesive hydrogel in acetone, and fully dissolving;
(7) At a temperature of 40 plus or minus 2 ℃; and removing the acetone solvent through reduced pressure distillation to finally obtain the tire self-repairing coating based on the ion-dipole effect.
2. The method for preparing the tire self-repairing coating based on the ion-dipole effect as claimed in claim 1, wherein in the step (1), the clay suspension has a concentration of 0.04-0.08mol/L.
3. The method for preparing the tire self-repairing coating based on the ion-dipole effect as recited in claim 1, wherein in the step (2), the initiator is potassium persulfate, the mass ratio of [2- (methacryloyloxy) ethyl ] dimethyl- (3-sulfopropyl) ammonium hydroxide to hydroxyethyl methacrylate is 20.
4. The method for preparing the tire self-repairing coating based on the ion-dipole effect as claimed in claim 1, wherein in the step (4), the molar ratio of 1- (6- (acryloyloxy) -hexyl) -3-ethylimidazoline bis (trifluoromethylsulfonyl) imide to potassium persulfate is 2.5.
5. The method for preparing the self-repairing coating of the tire based on the ion-dipole effect as claimed in claim 1, wherein in the step (6), the hexafluorobutyl acrylate accounts for 2-8% of the total mole percentage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211547856.1A CN115975419A (en) | 2022-12-05 | 2022-12-05 | Preparation method of tire self-repairing coating based on ion-dipole effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211547856.1A CN115975419A (en) | 2022-12-05 | 2022-12-05 | Preparation method of tire self-repairing coating based on ion-dipole effect |
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2022
- 2022-12-05 CN CN202211547856.1A patent/CN115975419A/en active Pending
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Application publication date: 20230418 |