CA2836978C - Sealant composition - Google Patents
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- CA2836978C CA2836978C CA2836978A CA2836978A CA2836978C CA 2836978 C CA2836978 C CA 2836978C CA 2836978 A CA2836978 A CA 2836978A CA 2836978 A CA2836978 A CA 2836978A CA 2836978 C CA2836978 C CA 2836978C
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- sealant composition
- sealant
- composition according
- freezing
- surfactant
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- 239000000565 sealant Substances 0.000 title claims abstract description 171
- 239000000203 mixture Substances 0.000 title claims abstract description 148
- 229920000126 latex Polymers 0.000 claims abstract description 35
- 239000004816 latex Substances 0.000 claims abstract description 34
- 238000007710 freezing Methods 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000000839 emulsion Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000004094 surface-active agent Substances 0.000 claims abstract description 19
- 239000000080 wetting agent Substances 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims description 32
- 230000000996 additive effect Effects 0.000 claims description 32
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 28
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 235000011187 glycerol Nutrition 0.000 claims description 14
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- 239000004966 Carbon aerogel Substances 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 claims description 5
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
- 239000003205 fragrance Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000003002 pH adjusting agent Substances 0.000 claims description 5
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims description 5
- 239000003755 preservative agent Substances 0.000 claims description 5
- 230000002335 preservative effect Effects 0.000 claims description 5
- 239000010457 zeolite Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000012621 metal-organic framework Substances 0.000 claims description 4
- 239000002917 insecticide Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 21
- 239000002736 nonionic surfactant Substances 0.000 description 17
- 239000003945 anionic surfactant Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 13
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 11
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 10
- 239000004965 Silica aerogel Substances 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- -1 aromatic terpene Chemical class 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 235000011056 potassium acetate Nutrition 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229940035437 1,3-propanediol Drugs 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000007863 gel particle Substances 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- HNAGHMKIPMKKBB-UHFFFAOYSA-N 1-benzylpyrrolidine-3-carboxamide Chemical compound C1C(C(=O)N)CCN1CC1=CC=CC=C1 HNAGHMKIPMKKBB-UHFFFAOYSA-N 0.000 description 1
- FRPAVHFNOFSNDR-UHFFFAOYSA-N 3-(2,4-dioxo-1,3-thiazolidin-3-yl)propanoic acid Chemical compound OC(=O)CCN1C(=O)CSC1=O FRPAVHFNOFSNDR-UHFFFAOYSA-N 0.000 description 1
- MUXOBHXGJLMRAB-UHFFFAOYSA-N Dimethyl succinate Chemical compound COC(=O)CCC(=O)OC MUXOBHXGJLMRAB-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OBNCKNCVKJNDBV-UHFFFAOYSA-N butanoic acid ethyl ester Natural products CCCC(=O)OCC OBNCKNCVKJNDBV-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/16—Auto-repairing or self-sealing arrangements or agents
- B29C73/163—Sealing compositions or agents, e.g. combined with propellant agents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Material Composition (AREA)
Abstract
A sealant composition is provided; the sealant composition comprises latex emulsion, nanoporous particles, surfactant, anti-freezing agent, wetting agent, and water. The sealant composition of the present application achieves a good sealing performance for the puncture of the tire. Furthermore, the sealant composition is easy to use and non-perishable, and has a long shelf life, which endows the sealant composition with a good market prospect.
Description
SEALANT COMPOSITION
FIELD OF THE INVENTION
The present application relates to a sealant composition.
BACKGROUND OF THE INVENTION
A tire of a vehicle may be punctured by a hard object on the road, and the punctured tire may roll unsteadily. This situation may cause a traffic accident and do physical harm to the driver of the vehicle. In order to avoid this situation, a kind of liquid sealant is developed. As a temporary emergent method, the liquid sealant can be used for repairing the punctured tire, so that the vehicle can continue to travel until reaching a repairing station.
At present, the liquid sealant on the market can be made according to various formulations. Most current formulations of the liquid sealant contain natural latex. For example, the invention patent US 6344499 B1 discloses a kind of sealant comprising 55-60wt% deproteinized natural latex. Another invention patent US 6992119 B2 discloses a kind of sealant comprising 30-60wt% natural latex. For the sealing purpose, various kinds of tackifier such as aromatic terpene resin or phenol resin can be added to the sealant, as pointed out by the invention patent US 6864305 B2. Additionally, the invention patent US 8148448 B2 discloses that 20-40wt% VEVA copolymer resin can be used as the tackifier. The invention patent US 20120277364 Al discloses that other materials, such as synthetic latex, can also be used as the tackifier.
As the liquid sealant may be applied at a wide temperature range, most kinds of the liquid sealant comprises anti-freezing agent. The choice of the anti-freezing agent is critical for determining whether the liquid sealant has a lower viscosity or not. In the invention patent US 6344499 B1 and the invention patent US 6864305 B2, ethylene glycol or propylene glycol can be used as the =
anti-freezing agent. However, since ethylene glycol is toxic to the environment, ethylene glycol is not preferable. The patent US 7388041 B2 and the patent US
8183309 B2 disclose glycerin, 1, 3-propanediol, and other anti-freezing agents respectively. To further reducing the viscosity, the patent US 7388041 B2 discloses that potassium acetate can be added into glycerin so that using less quantity of glycerin can achieve the same anti-freezing effect as using a large quantity of pure glycerin.
Furthermore, to improve the sealing performance, solid components can also be added into the liquid sealant. For example, in the sealant formulation disclosed by the patent US 7868061 B2, 2.5-10wt% fiber material is added into the sealant, and the latex component is reduced to 1-10wt%. In another invention patent US 7589135 B2, a kind of sealant comprising synthetic short fibers and rubber latex is disclosed.
Except the sealing performance, the stability of the liquid sealant is also important, particularly in the liquid sealant comprising natural latex.
Surfactant can be added into the liquid sealant to improve the stability of the liquid sealant.
In general, anionic surfactant added into the liquid sealant can achieve a superior stabilizing effect, but it would result in a high viscosity of the liquid sealant, especially at a low temperature. Thus, the patent US 8242196 B2 mentions that it is preferred to use nonionic surfactant. The invention patent US 8470909 132 discloses a combination comprising both anionic surfactant and nonionic surfactant, which is configured for improving the stabilization of the liquid sealant.
Although a number of sealant products have been developed, most of them contain solid contents with large mass percentages (above 15wt%). When these sealant products are used, they may cause environmental pollution problems or cleanliness problems. However, other sealant products may be unstable or have not a good tire sealing effect at a wide temperature range. Furthermore, the use of sealant comprising toxic components such as ethylene glycol is undesirable, and
FIELD OF THE INVENTION
The present application relates to a sealant composition.
BACKGROUND OF THE INVENTION
A tire of a vehicle may be punctured by a hard object on the road, and the punctured tire may roll unsteadily. This situation may cause a traffic accident and do physical harm to the driver of the vehicle. In order to avoid this situation, a kind of liquid sealant is developed. As a temporary emergent method, the liquid sealant can be used for repairing the punctured tire, so that the vehicle can continue to travel until reaching a repairing station.
At present, the liquid sealant on the market can be made according to various formulations. Most current formulations of the liquid sealant contain natural latex. For example, the invention patent US 6344499 B1 discloses a kind of sealant comprising 55-60wt% deproteinized natural latex. Another invention patent US 6992119 B2 discloses a kind of sealant comprising 30-60wt% natural latex. For the sealing purpose, various kinds of tackifier such as aromatic terpene resin or phenol resin can be added to the sealant, as pointed out by the invention patent US 6864305 B2. Additionally, the invention patent US 8148448 B2 discloses that 20-40wt% VEVA copolymer resin can be used as the tackifier. The invention patent US 20120277364 Al discloses that other materials, such as synthetic latex, can also be used as the tackifier.
As the liquid sealant may be applied at a wide temperature range, most kinds of the liquid sealant comprises anti-freezing agent. The choice of the anti-freezing agent is critical for determining whether the liquid sealant has a lower viscosity or not. In the invention patent US 6344499 B1 and the invention patent US 6864305 B2, ethylene glycol or propylene glycol can be used as the =
anti-freezing agent. However, since ethylene glycol is toxic to the environment, ethylene glycol is not preferable. The patent US 7388041 B2 and the patent US
8183309 B2 disclose glycerin, 1, 3-propanediol, and other anti-freezing agents respectively. To further reducing the viscosity, the patent US 7388041 B2 discloses that potassium acetate can be added into glycerin so that using less quantity of glycerin can achieve the same anti-freezing effect as using a large quantity of pure glycerin.
Furthermore, to improve the sealing performance, solid components can also be added into the liquid sealant. For example, in the sealant formulation disclosed by the patent US 7868061 B2, 2.5-10wt% fiber material is added into the sealant, and the latex component is reduced to 1-10wt%. In another invention patent US 7589135 B2, a kind of sealant comprising synthetic short fibers and rubber latex is disclosed.
Except the sealing performance, the stability of the liquid sealant is also important, particularly in the liquid sealant comprising natural latex.
Surfactant can be added into the liquid sealant to improve the stability of the liquid sealant.
In general, anionic surfactant added into the liquid sealant can achieve a superior stabilizing effect, but it would result in a high viscosity of the liquid sealant, especially at a low temperature. Thus, the patent US 8242196 B2 mentions that it is preferred to use nonionic surfactant. The invention patent US 8470909 132 discloses a combination comprising both anionic surfactant and nonionic surfactant, which is configured for improving the stabilization of the liquid sealant.
Although a number of sealant products have been developed, most of them contain solid contents with large mass percentages (above 15wt%). When these sealant products are used, they may cause environmental pollution problems or cleanliness problems. However, other sealant products may be unstable or have not a good tire sealing effect at a wide temperature range. Furthermore, the use of sealant comprising toxic components such as ethylene glycol is undesirable, and
2 solid particles and fibers used in sealant may cause sedimentation problems.
SUMMARY OF THE INVENTION
The objective of the present application is to provide a sealant composition, aiming at the defect that the sealing performance and the stability of the sealant in the prior art are not good.
The technical solutions of the present application for solving the technical problems are as follows:
In one aspect, a sealant composition is provided, the sealant composition comprises latex emulsion, nanoporous particles, surfactant, anti-freezing agent, wetting agent, and water.
In one embodiment, the nanoporous particles include at least one of zeolite, silica aerogel, mesoporous silica, carbon aerogel, mesoporous carbon, activated carbon, cenosphere, diatomite, porous metal organic frameworks (M0Fs).
In another embodiment, the weight percentage of the nanoporous particles in the sealant composition is ranged from 0.01% to 5%.
In another embodiment, the weight percentage of the anti-freezing agent in the sealant composition is ranged from 40% to 90%.
In another embodiment, the anti-freezing agent includes at least one of propylene glycol, glycerin, diethylene glycol, and 1,3-propanediol.
In another embodiment, the weight percentage of the latex emulsion in the sealant composition is ranged from 2% to 20%.
In another embodiment, the weight percentage of the surfactant in the sealant composition is ranged from 0.1% to 2.5%.
In another embodiment, the weight percentage of the wetting agent in the sealant composition is ranged from the 0.01% to 5%.
In another embodiment, the sealant composition further comprises anti-freezing additive, and the anti-freezing additive includes inorganic salts and/or
SUMMARY OF THE INVENTION
The objective of the present application is to provide a sealant composition, aiming at the defect that the sealing performance and the stability of the sealant in the prior art are not good.
The technical solutions of the present application for solving the technical problems are as follows:
In one aspect, a sealant composition is provided, the sealant composition comprises latex emulsion, nanoporous particles, surfactant, anti-freezing agent, wetting agent, and water.
In one embodiment, the nanoporous particles include at least one of zeolite, silica aerogel, mesoporous silica, carbon aerogel, mesoporous carbon, activated carbon, cenosphere, diatomite, porous metal organic frameworks (M0Fs).
In another embodiment, the weight percentage of the nanoporous particles in the sealant composition is ranged from 0.01% to 5%.
In another embodiment, the weight percentage of the anti-freezing agent in the sealant composition is ranged from 40% to 90%.
In another embodiment, the anti-freezing agent includes at least one of propylene glycol, glycerin, diethylene glycol, and 1,3-propanediol.
In another embodiment, the weight percentage of the latex emulsion in the sealant composition is ranged from 2% to 20%.
In another embodiment, the weight percentage of the surfactant in the sealant composition is ranged from 0.1% to 2.5%.
In another embodiment, the weight percentage of the wetting agent in the sealant composition is ranged from the 0.01% to 5%.
In another embodiment, the sealant composition further comprises anti-freezing additive, and the anti-freezing additive includes inorganic salts and/or
3 organic salts.
In another embodiment, the sealant composition further comprises assisted additive, and the assisted additive includes at least one of anti-corrosion additive, insecticide, pH-modifier, anti-foaming agent, preservative, colorant, and odorant.
Various embodiments relate to a sealant composition, comprising: an adhesive agent consisting of latex emulsion, at least one nanoporous particle consisting essentially of zeolite, carbon aerogel, mesoporous carbon, activated carbon, cenosphere, porous metal, and organic chelating compounds, surfactant, anti-freezing agent, wetting agent, pH-modifier, and water, wherein the anti-freezing agent has a weight percentage in the sealant composition ranging from 40% to 90%, wherein the weight percentage of the nanoporous particles in the sealant composition is less than about 5%.
The sealant composition of the present application achieves a good sealing performance for the puncture of the tire. Furthermore, the sealant composition is easy to use and non-perishable, and has a long shelf life, which endows the sealant composition with a good market prospect.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The present application discloses a sealant composition for repairing tires.
The sealant composition comprises latex emulsion, and solid particles and fibers configured for achieving the sealing purpose. When the sealant composition flows through a tire puncture, a pressure difference between the interior of the tire and the external environment generates great shearing force, and the shearing force makes the latex emulsion form solid rubber. In this way, the tire puncture is sealed.
Specifically, in the present application, the sealant composition comprises the latex emulsion, nanoporous particles, surfactant, anti-freezing agent, wetting agent,
In another embodiment, the sealant composition further comprises assisted additive, and the assisted additive includes at least one of anti-corrosion additive, insecticide, pH-modifier, anti-foaming agent, preservative, colorant, and odorant.
Various embodiments relate to a sealant composition, comprising: an adhesive agent consisting of latex emulsion, at least one nanoporous particle consisting essentially of zeolite, carbon aerogel, mesoporous carbon, activated carbon, cenosphere, porous metal, and organic chelating compounds, surfactant, anti-freezing agent, wetting agent, pH-modifier, and water, wherein the anti-freezing agent has a weight percentage in the sealant composition ranging from 40% to 90%, wherein the weight percentage of the nanoporous particles in the sealant composition is less than about 5%.
The sealant composition of the present application achieves a good sealing performance for the puncture of the tire. Furthermore, the sealant composition is easy to use and non-perishable, and has a long shelf life, which endows the sealant composition with a good market prospect.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The present application discloses a sealant composition for repairing tires.
The sealant composition comprises latex emulsion, and solid particles and fibers configured for achieving the sealing purpose. When the sealant composition flows through a tire puncture, a pressure difference between the interior of the tire and the external environment generates great shearing force, and the shearing force makes the latex emulsion form solid rubber. In this way, the tire puncture is sealed.
Specifically, in the present application, the sealant composition comprises the latex emulsion, nanoporous particles, surfactant, anti-freezing agent, wetting agent,
4 and water. Furthermore, the sealant composition further comprises anti-freezing additive.
Furthermore, in the present application, the latex emulsion can be natural latex or synthetic latex. If the latex emulsion is natural latex, the natural latex including no impurity such as unwanted proteins, lipid, minerals, inorganic ions, and other contaminants is preferable, and should be capable of being obtained by means of purchase. The quality of the natural latex depends on the source of the latex material. The latex emulsion can also be synthetic latex such as NBR or 4a SBR. In the present application, the weight percentage of the latex emulsion in the sealant composition is ranged from 2% to 20%, preferably from 6% to 11%.
Furthermore, in the present application, the nanoporous particles can be granular, fibrous, or in other shapes. The nanoporous particles have a low density because of the nanoporous structures, so the sedimentation odds of the sealant composition including the nanoporous particles are decreased. Moreover, a small amount (by weight) of the nanoporous particles can enhance the sealing performance for tire punctures of the sealant composition effectively because of its low density, so that the sealant composition including the nanoporous particles has a wider market prospect than normal sealant compositions.
Specially, in the present application, a small amount of nanoporous particles involved in the sealant composition may deposit or settle, but deposited or settled nanoporous particles can be easily dispersed again by slightly shaking the sealant compositon. The nanoporous particles can include at least one of zeolite, silica aerogel, mesoporous silica, carbon aerogel, mesoporous carbon, activated carbon, cenosphere, diatomite, and porous metal and organic chelating compounds (e.g., metal organic frameworks). Furthermore, in the present application, the nanoporous particles with chitosan gel particles can also be added into the sealant composition, and the method for adding the chitosan gel particles into the sealant composition has been disclosed by the previous invention patent US 20120118199 Al.
In the present application, the pore size of the nanoporous particles is at least 0.5nm, preferably larger than 2nm, and the porosity of the nanoporous particles is ranged from 0.1 to 0.95. Moreover, the nanoporous particles can be granular, fibrous, or in other shapes, and the particle size of the nanoporous particles is less than 100 microns. Furthermore, when the specific surface area of the nanoporous particles is measured by the nitrogen absorption method, the specific surface area of the nanoporous particles should be more than 100 m2/g. The weight percentage of the nanoporous particles in the sealant composition is ranged from 0.01% to 5%, and preferably from 0.1% to 1%.
Furthermore, in the present application, the sealant composition further comprises the water used as the medium configured for enabling the latex emulsion and the nanoporous particles to suspend. In the present application, the weight percentage of the water in the sealant composition is ranged from 0.01%
to 42%.
In the present application, the sealant composition further comprises at least one kind of anti-freezing agent, such as glycol. The anti-freezing agent is used to widen an operational temperature range of the sealant composition. The anti-freezing agent can be at least one of propylene glycol, glycerin, diethylene glycol, and 1, 3-propanediol, etc. In the present application, the weight percentage of the anti-freezing agent in the sealant composition is ranged from 40% to 90%. Besides, when the sealant composition includes two or more kinds of anti-freezing agent, there is no limitation to the ratio between different kinds of anti-freezing agent.
Furthermore, the sealant composition can further comprise the anti-freezing additive, and the weight percentage of the anti-freezing additive in the sealant composition is ranged from 0.01% to 10%. The anti-freezing additive includes inorganic salts and/or organic salts (e.g., potassium acetate) used to enhance the anti-freezing effect of the sealant composition. In the present application, the operational temperature range of the sealant composition is between -40 C and 80 C .
Furthermore, the sealant composition further comprises at least one kind of surfactant. The surfactant is used to improve the stability of the latex emulsion so as to extend the shelf life of the sealant composition. The surfactant can be added into the sealant composition directly, and can also be mixed with the latex emulsion and then added into the sealant composition.
The surfactant can be anionic surfactant and/or non-ionic surfactant. The non-ionic surfactant can be at least one of polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyethylene alkylamine, and triethanolamine laurate. The anionic surfactant can be SDS. Although SDS may increase the viscosity of the sealant composition, it can stabilize the latex emulsion in the sealant composition effectively.
The sealant composition can include composite surfactant formed by mixing different kinds of surfactant together, wherein the kinds of the surfactant for forming the composite surfactant can be selected according to the kind and the amount of the latex emulsion used in the sealant composition. The composite surfactant can be a mixture of different kinds of nonionic surfactant, a mixture of at least one kind of nonionic surfactant and at least one kind of anionic surfactant, or a mixture of different kinds of anionic surfactant.
In the present application, the weight percentage of the surfactant in the sealant composition is ranged from 0.1% to 2.5%.
Furthermore, the sealant composition further comprises the wetting agent (e.g., alcohol, ether, or ester) used to improve the wettability, viscosity, and spreading property of the sealant composition. The wetting agent is used to decrease the surface tension of the sealant composition, so that the sealant composition can spread to an end surface area of a tire more easily. Thus, the sealant composition can effectively seal a puncture out of a tread area of a tire.
In the present application, the wetting agent can be ethanol, propanol, isopropanol, ethyl butyrate, dimethyl succinate, or other chemical materials, etc.
These wetting agents have low surface tension, so that the surface tension of the sealant composition can be effectively reduced when these wetting agents are added into the sealant composition. In the present application, the weight percentage of the wetting agent in the sealant composition is ranged from the 0.01% to 5%. It is evident that the wetting agent decreases the contact angle of the sealant composition. Meanwhile, the wetting agent can enhance the anti-freezing effect and stabilizing effect of the sealant composition.
Additionally, the sealant composition can further comprise assisted additive.
The assisted additive includes at least one of anti-corrosion additive, insecticide, pH-modifier, anti-foaming agent, preservative, colorant, and odorant.
The assisted additive is used to add corresponding functions of the sealant composition. For example, the preservative can be added into the sealant composition for preserving the bio-degradable components in the sealant composition, so that the shelf-life of the sealant composition can be extended to five years or more. The anti-corrosion additive can be added into the sealant composition to prevent the interior of a tire from rusting. The colorant can be used to dye the sealant composition, and the odorant can be used to eliminate pungent smell of the sealant composition. The colorant and the odorant do not cause any adverse effect on the sealing property of the sealant composition.
The anti-foaming agent can be optionally added into the sealant composition to prevent the sealant composition from foaming. The pH-modifier is used for adjusting the pH of the sealant composition. When the pH of the sealant composition is more than 8, the latex emulsion in the sealant composition is more stable. The weight percentage of the assisted additive in the sealant composition is arranged from 0.01% to 1%.
The sealant composition of the present application can perform a significant sealing effect on a puncture of a tire caused by a spike with the length that is less than 8 mm. The sealant composition can keep the puncture of the tire being sealed for about 12-48 hours.
In the present application, the viscosity of the sealant composition is in the range of 18-800mPas, and can change with the ambient temperature. The pH of the sealant composition is adjusted to be more than 8, preferably in the range of 8-11. When the pH of the sealant composition is between 8 and 11, the latex emulsion in the sealant composition is more stable. Furthermore, when the nanoporous particles are used to replace solid particles with a high density used in typical sealant compositions, the sealant composition does not generate evident settlement in at least 24 hours. When the surfactant and the preservative are added into the sealant composition, the sealant composition can maintain the proper function thereof for more than five years. In use, the sealant composition is injected into a tire through a hose under the action of compressed air, wherein, the injection pressure is preferably 2.5-10bar, and the valve core of the tire can be either removed or not. In addition, the sealant composition can spread to reach the end surface area of the tire, so that a puncture out of the tread area of the tire can also be effectively sealed.
To test the sealant performance of the sealant composition on tires, a spike with a length that is less than 8mm is used to form a puncture formed on a tire.
The tire is mounted onto a vehicle, and the sealant composition is injected into the tire. The vehicle with the tire is then driven to run for less than 20km.
Every time when the vehicle runs for 2-5km, the air leakage of the tire is checked by measuring the inner tire pressure. In this way, the sealing effect on the tire puncture, which is caused by the sealant composition, can be recorded by the aforementioned method. If the decrement of the inner tire pressure is less than 0.2bar, it is indicated that the sealant composition seals the tire puncture successfully, that is, the sealing performance of the sealant composition is good.
After the tire is detached from the vehicle, the tire is kept being stationary, with the tire puncture facing upwards. The pressure decrement can be measured again after 24h or 48h to confirm the sealing performance.
The shelf life of the sealant composition can be tested by static aging test and heat dynamic test. In the static aging test, the sealant composition is placed in an oven at a temperature of 70 C or more for more than 40 days, and thus the sealing performance of the sealant composition can be tested as described above.
Twelve embodiments of the sealant composition are shown as follows.
Embodiment 1 The sealant composition comprises: 17.39wt% water, 55vvt% glycerin, 20wt%
natural latex, 5wt% ethanol, lwt% non-ionic surfactant, 1.5wt% anionic surfactant, 0.01wt% silica aerogel, and 0.1wt% assisted additive.
Embodiment 2 The sealant composition comprises: 32.0 lwt% water, 40wt% glycerin, 5wt%
potassium acetate, 5wt% Inorganic salt, lOwt% natural latex, 2.5wt% ethanol, lwt% non-ionic surfactant, 0.5wt% anionic surfactant, lwt% mesoporous silica, 0.5wt% silica aerogel, 1.99wt% activated carbon, and 0.5wt% assisted additive.
Embodiment 3 The sealant composition comprises: 33.15wt% water, 50wt% glycerin, 14wt%
synthetic latex, 2.2wt% ethanol, 0.35wt% non-ionic surfactant, 0.2wt%
cenosphere, and 0. lwt% assisted additive.
Embodiment 4 The sealant composition comprises: 38.3wt% water, 48wt% glycerin, lOwt%
synthetic latex, 2.5wt% ethanol, 0.7wt% non-ionic surfactant, 0.2wt% anionic surfactant, 0.2wt% silica aerogel, and 0.1wt% assisted additive.
Embodiment 5 The sealant composition comprises: 38.2wt% water, 48wt% 1,3-propanediol, lOwt% synthetic latex, 2.5wt% ethanol, 0.7vvt% non-ionic surfactant, 0.3wt%
anionic surfactant, 0.2wt% mesoporous carbon, and 0.1wt% assisted additive.
Embodiment 6 The sealant composition comprises: 38.35wt% water, 48wt% propylene glycol, lOwt% synthetic latex, 2.5wt% isopropanol, 0.7wt% non-ionic surfactant, 0.3wt% anionic surfactant, 0.05wt% silica aerogel, and 0.1wt% assisted additive.
Embodiment 7 The sealant composition comprises: 14.7wt% water, 70wt% glycerin, 5wt%
inorganic salt, 5wt% natural latex, 2wt% non-ionic surfactant, 2wt% silica aerogel, 1wt'Yo zeolite, and 0.3wt% assisted additive.
Embodiment 8 The sealant composition comprises: 2.8wt% water, 90wt% propylene glycol, 2wt% synthetic latex, 0.1wt% anionic surfactant, 2wt% silica aerogel, 3wt%
carbon aerogel, and 0.1wt% assisted additive.
Embodiment 9 The sealant composition comprises: 40.3wt% water, 45wt% propylene glycol, 2wt% potassium acetate, 8wt% synthetic latex, 2.5wt% isopropanol, lwt%
non-ionic surfactant, 0.6wt% anionic surfactant, 0.2wt% mesoporous silica, 0.1wt% silica aerogel, 0.1wt% carbon aerogel, 0.1wt% cenosphere, and 0.1wt%
assisted additive.
Embodiment 10 The sealant composition comprises 34.3wt% water, 48wtcY0 propylene glycol, 2wt% potassium acetate, lOwt% synthetic latex, lwt% isopropanol, 2wt%
n-propanol, 0.7wt% non-ionic surfactant, 0.5wV/0 anionic surfactant, 0.2wt%
mesoporous silica, 0.2wt% activated carbon, 0.1wt% cenosphere, and lwt%
assisted additive.
Embodiment 11 The sealant composition comprises: 28.6wt% water, 54wt% glycerin, lOwt%
synthetic latex, 5w0/0 ether, lvvt% non-ionic surfactant, 0.1wt% anionic surfactant, 0.2wt% activated carbon, 0. lwt% cenosphere, and lwt% assisted additive.
Embodiment 12 The sealant composition comprises: 28.6wt% water, 54wt% glycerin, lOwt%
synthetic latex, 5wt% ester, lwt% non-ionic surfactant, 0.1wt% anionic surfactant, 0.2wt% activated carbon, 0.1wt% cenosphere, and lwt% assisted additive.
Table 1 shows test results of the above-mentioned twelve embodiments of the present application as follows.
Table 1 Viscosity Viscosity Solid Sealing Cream Embodiment Aging (mPas) (mPas) pH content perfor- formation number tests at -30 C at 25 C (%) mance (wt%) 1 239 35 11 12.3 Good Pass <10 2 310 28 11.5 10 Good Pass <10 3 165 32 10.5 9.3 Good Pass <10 4 160 36 10.5 7.2 Good Pass <10 130 18 10.8 7.3 Good Pass <10 6 202 25 11 7.1 Good Pass <10 7 720 25 10.9 8 Good Pass <10 8 800 48 9 6.3 Fair Pass <10 9 220 26 8 6.6 Good Pass <10 220 20 9.5 7.7 Good Pass <10 11 250 20 10 7.4 Good Pass <10 12 261 26 10 7.4 Good Pass <10 In the present application, the viscosity of the sealant composition is ranged from 18mPas to 800mPas; and the pH of the sealant composition is ranged from 8 to 11. The operational temperature of the sealant composition is ranged from -40 C to 80 C. The sealant composition can seal the puncture of the tire for more than 24 hours. After the sealant composition is used to seal the tire puncture, it can be cleaned easily by water flushing.
Above all, the sealant composition of the present application achieves a good sealing performance for the puncture of the tire. Furthermore, the sealant composition is easy to use and non-perishable, and has a long shelf life, which endows the sealant composition with a good market prospect.
While the embodiments of the present application are described with reference to the accompanying drawings above, the present application is not limited to the above-mentioned specific implementations. In fact, the above-mentioned specific implementations are intended to be exemplary not to be limiting. In the inspiration of the present application, those ordinary skills in the art can also make many modifications without breaking away from the subject of the present application and the protection scope of the claims. All these modifications belong to the protection of the present application.
Furthermore, in the present application, the latex emulsion can be natural latex or synthetic latex. If the latex emulsion is natural latex, the natural latex including no impurity such as unwanted proteins, lipid, minerals, inorganic ions, and other contaminants is preferable, and should be capable of being obtained by means of purchase. The quality of the natural latex depends on the source of the latex material. The latex emulsion can also be synthetic latex such as NBR or 4a SBR. In the present application, the weight percentage of the latex emulsion in the sealant composition is ranged from 2% to 20%, preferably from 6% to 11%.
Furthermore, in the present application, the nanoporous particles can be granular, fibrous, or in other shapes. The nanoporous particles have a low density because of the nanoporous structures, so the sedimentation odds of the sealant composition including the nanoporous particles are decreased. Moreover, a small amount (by weight) of the nanoporous particles can enhance the sealing performance for tire punctures of the sealant composition effectively because of its low density, so that the sealant composition including the nanoporous particles has a wider market prospect than normal sealant compositions.
Specially, in the present application, a small amount of nanoporous particles involved in the sealant composition may deposit or settle, but deposited or settled nanoporous particles can be easily dispersed again by slightly shaking the sealant compositon. The nanoporous particles can include at least one of zeolite, silica aerogel, mesoporous silica, carbon aerogel, mesoporous carbon, activated carbon, cenosphere, diatomite, and porous metal and organic chelating compounds (e.g., metal organic frameworks). Furthermore, in the present application, the nanoporous particles with chitosan gel particles can also be added into the sealant composition, and the method for adding the chitosan gel particles into the sealant composition has been disclosed by the previous invention patent US 20120118199 Al.
In the present application, the pore size of the nanoporous particles is at least 0.5nm, preferably larger than 2nm, and the porosity of the nanoporous particles is ranged from 0.1 to 0.95. Moreover, the nanoporous particles can be granular, fibrous, or in other shapes, and the particle size of the nanoporous particles is less than 100 microns. Furthermore, when the specific surface area of the nanoporous particles is measured by the nitrogen absorption method, the specific surface area of the nanoporous particles should be more than 100 m2/g. The weight percentage of the nanoporous particles in the sealant composition is ranged from 0.01% to 5%, and preferably from 0.1% to 1%.
Furthermore, in the present application, the sealant composition further comprises the water used as the medium configured for enabling the latex emulsion and the nanoporous particles to suspend. In the present application, the weight percentage of the water in the sealant composition is ranged from 0.01%
to 42%.
In the present application, the sealant composition further comprises at least one kind of anti-freezing agent, such as glycol. The anti-freezing agent is used to widen an operational temperature range of the sealant composition. The anti-freezing agent can be at least one of propylene glycol, glycerin, diethylene glycol, and 1, 3-propanediol, etc. In the present application, the weight percentage of the anti-freezing agent in the sealant composition is ranged from 40% to 90%. Besides, when the sealant composition includes two or more kinds of anti-freezing agent, there is no limitation to the ratio between different kinds of anti-freezing agent.
Furthermore, the sealant composition can further comprise the anti-freezing additive, and the weight percentage of the anti-freezing additive in the sealant composition is ranged from 0.01% to 10%. The anti-freezing additive includes inorganic salts and/or organic salts (e.g., potassium acetate) used to enhance the anti-freezing effect of the sealant composition. In the present application, the operational temperature range of the sealant composition is between -40 C and 80 C .
Furthermore, the sealant composition further comprises at least one kind of surfactant. The surfactant is used to improve the stability of the latex emulsion so as to extend the shelf life of the sealant composition. The surfactant can be added into the sealant composition directly, and can also be mixed with the latex emulsion and then added into the sealant composition.
The surfactant can be anionic surfactant and/or non-ionic surfactant. The non-ionic surfactant can be at least one of polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyethylene alkylamine, and triethanolamine laurate. The anionic surfactant can be SDS. Although SDS may increase the viscosity of the sealant composition, it can stabilize the latex emulsion in the sealant composition effectively.
The sealant composition can include composite surfactant formed by mixing different kinds of surfactant together, wherein the kinds of the surfactant for forming the composite surfactant can be selected according to the kind and the amount of the latex emulsion used in the sealant composition. The composite surfactant can be a mixture of different kinds of nonionic surfactant, a mixture of at least one kind of nonionic surfactant and at least one kind of anionic surfactant, or a mixture of different kinds of anionic surfactant.
In the present application, the weight percentage of the surfactant in the sealant composition is ranged from 0.1% to 2.5%.
Furthermore, the sealant composition further comprises the wetting agent (e.g., alcohol, ether, or ester) used to improve the wettability, viscosity, and spreading property of the sealant composition. The wetting agent is used to decrease the surface tension of the sealant composition, so that the sealant composition can spread to an end surface area of a tire more easily. Thus, the sealant composition can effectively seal a puncture out of a tread area of a tire.
In the present application, the wetting agent can be ethanol, propanol, isopropanol, ethyl butyrate, dimethyl succinate, or other chemical materials, etc.
These wetting agents have low surface tension, so that the surface tension of the sealant composition can be effectively reduced when these wetting agents are added into the sealant composition. In the present application, the weight percentage of the wetting agent in the sealant composition is ranged from the 0.01% to 5%. It is evident that the wetting agent decreases the contact angle of the sealant composition. Meanwhile, the wetting agent can enhance the anti-freezing effect and stabilizing effect of the sealant composition.
Additionally, the sealant composition can further comprise assisted additive.
The assisted additive includes at least one of anti-corrosion additive, insecticide, pH-modifier, anti-foaming agent, preservative, colorant, and odorant.
The assisted additive is used to add corresponding functions of the sealant composition. For example, the preservative can be added into the sealant composition for preserving the bio-degradable components in the sealant composition, so that the shelf-life of the sealant composition can be extended to five years or more. The anti-corrosion additive can be added into the sealant composition to prevent the interior of a tire from rusting. The colorant can be used to dye the sealant composition, and the odorant can be used to eliminate pungent smell of the sealant composition. The colorant and the odorant do not cause any adverse effect on the sealing property of the sealant composition.
The anti-foaming agent can be optionally added into the sealant composition to prevent the sealant composition from foaming. The pH-modifier is used for adjusting the pH of the sealant composition. When the pH of the sealant composition is more than 8, the latex emulsion in the sealant composition is more stable. The weight percentage of the assisted additive in the sealant composition is arranged from 0.01% to 1%.
The sealant composition of the present application can perform a significant sealing effect on a puncture of a tire caused by a spike with the length that is less than 8 mm. The sealant composition can keep the puncture of the tire being sealed for about 12-48 hours.
In the present application, the viscosity of the sealant composition is in the range of 18-800mPas, and can change with the ambient temperature. The pH of the sealant composition is adjusted to be more than 8, preferably in the range of 8-11. When the pH of the sealant composition is between 8 and 11, the latex emulsion in the sealant composition is more stable. Furthermore, when the nanoporous particles are used to replace solid particles with a high density used in typical sealant compositions, the sealant composition does not generate evident settlement in at least 24 hours. When the surfactant and the preservative are added into the sealant composition, the sealant composition can maintain the proper function thereof for more than five years. In use, the sealant composition is injected into a tire through a hose under the action of compressed air, wherein, the injection pressure is preferably 2.5-10bar, and the valve core of the tire can be either removed or not. In addition, the sealant composition can spread to reach the end surface area of the tire, so that a puncture out of the tread area of the tire can also be effectively sealed.
To test the sealant performance of the sealant composition on tires, a spike with a length that is less than 8mm is used to form a puncture formed on a tire.
The tire is mounted onto a vehicle, and the sealant composition is injected into the tire. The vehicle with the tire is then driven to run for less than 20km.
Every time when the vehicle runs for 2-5km, the air leakage of the tire is checked by measuring the inner tire pressure. In this way, the sealing effect on the tire puncture, which is caused by the sealant composition, can be recorded by the aforementioned method. If the decrement of the inner tire pressure is less than 0.2bar, it is indicated that the sealant composition seals the tire puncture successfully, that is, the sealing performance of the sealant composition is good.
After the tire is detached from the vehicle, the tire is kept being stationary, with the tire puncture facing upwards. The pressure decrement can be measured again after 24h or 48h to confirm the sealing performance.
The shelf life of the sealant composition can be tested by static aging test and heat dynamic test. In the static aging test, the sealant composition is placed in an oven at a temperature of 70 C or more for more than 40 days, and thus the sealing performance of the sealant composition can be tested as described above.
Twelve embodiments of the sealant composition are shown as follows.
Embodiment 1 The sealant composition comprises: 17.39wt% water, 55vvt% glycerin, 20wt%
natural latex, 5wt% ethanol, lwt% non-ionic surfactant, 1.5wt% anionic surfactant, 0.01wt% silica aerogel, and 0.1wt% assisted additive.
Embodiment 2 The sealant composition comprises: 32.0 lwt% water, 40wt% glycerin, 5wt%
potassium acetate, 5wt% Inorganic salt, lOwt% natural latex, 2.5wt% ethanol, lwt% non-ionic surfactant, 0.5wt% anionic surfactant, lwt% mesoporous silica, 0.5wt% silica aerogel, 1.99wt% activated carbon, and 0.5wt% assisted additive.
Embodiment 3 The sealant composition comprises: 33.15wt% water, 50wt% glycerin, 14wt%
synthetic latex, 2.2wt% ethanol, 0.35wt% non-ionic surfactant, 0.2wt%
cenosphere, and 0. lwt% assisted additive.
Embodiment 4 The sealant composition comprises: 38.3wt% water, 48wt% glycerin, lOwt%
synthetic latex, 2.5wt% ethanol, 0.7wt% non-ionic surfactant, 0.2wt% anionic surfactant, 0.2wt% silica aerogel, and 0.1wt% assisted additive.
Embodiment 5 The sealant composition comprises: 38.2wt% water, 48wt% 1,3-propanediol, lOwt% synthetic latex, 2.5wt% ethanol, 0.7vvt% non-ionic surfactant, 0.3wt%
anionic surfactant, 0.2wt% mesoporous carbon, and 0.1wt% assisted additive.
Embodiment 6 The sealant composition comprises: 38.35wt% water, 48wt% propylene glycol, lOwt% synthetic latex, 2.5wt% isopropanol, 0.7wt% non-ionic surfactant, 0.3wt% anionic surfactant, 0.05wt% silica aerogel, and 0.1wt% assisted additive.
Embodiment 7 The sealant composition comprises: 14.7wt% water, 70wt% glycerin, 5wt%
inorganic salt, 5wt% natural latex, 2wt% non-ionic surfactant, 2wt% silica aerogel, 1wt'Yo zeolite, and 0.3wt% assisted additive.
Embodiment 8 The sealant composition comprises: 2.8wt% water, 90wt% propylene glycol, 2wt% synthetic latex, 0.1wt% anionic surfactant, 2wt% silica aerogel, 3wt%
carbon aerogel, and 0.1wt% assisted additive.
Embodiment 9 The sealant composition comprises: 40.3wt% water, 45wt% propylene glycol, 2wt% potassium acetate, 8wt% synthetic latex, 2.5wt% isopropanol, lwt%
non-ionic surfactant, 0.6wt% anionic surfactant, 0.2wt% mesoporous silica, 0.1wt% silica aerogel, 0.1wt% carbon aerogel, 0.1wt% cenosphere, and 0.1wt%
assisted additive.
Embodiment 10 The sealant composition comprises 34.3wt% water, 48wtcY0 propylene glycol, 2wt% potassium acetate, lOwt% synthetic latex, lwt% isopropanol, 2wt%
n-propanol, 0.7wt% non-ionic surfactant, 0.5wV/0 anionic surfactant, 0.2wt%
mesoporous silica, 0.2wt% activated carbon, 0.1wt% cenosphere, and lwt%
assisted additive.
Embodiment 11 The sealant composition comprises: 28.6wt% water, 54wt% glycerin, lOwt%
synthetic latex, 5w0/0 ether, lvvt% non-ionic surfactant, 0.1wt% anionic surfactant, 0.2wt% activated carbon, 0. lwt% cenosphere, and lwt% assisted additive.
Embodiment 12 The sealant composition comprises: 28.6wt% water, 54wt% glycerin, lOwt%
synthetic latex, 5wt% ester, lwt% non-ionic surfactant, 0.1wt% anionic surfactant, 0.2wt% activated carbon, 0.1wt% cenosphere, and lwt% assisted additive.
Table 1 shows test results of the above-mentioned twelve embodiments of the present application as follows.
Table 1 Viscosity Viscosity Solid Sealing Cream Embodiment Aging (mPas) (mPas) pH content perfor- formation number tests at -30 C at 25 C (%) mance (wt%) 1 239 35 11 12.3 Good Pass <10 2 310 28 11.5 10 Good Pass <10 3 165 32 10.5 9.3 Good Pass <10 4 160 36 10.5 7.2 Good Pass <10 130 18 10.8 7.3 Good Pass <10 6 202 25 11 7.1 Good Pass <10 7 720 25 10.9 8 Good Pass <10 8 800 48 9 6.3 Fair Pass <10 9 220 26 8 6.6 Good Pass <10 220 20 9.5 7.7 Good Pass <10 11 250 20 10 7.4 Good Pass <10 12 261 26 10 7.4 Good Pass <10 In the present application, the viscosity of the sealant composition is ranged from 18mPas to 800mPas; and the pH of the sealant composition is ranged from 8 to 11. The operational temperature of the sealant composition is ranged from -40 C to 80 C. The sealant composition can seal the puncture of the tire for more than 24 hours. After the sealant composition is used to seal the tire puncture, it can be cleaned easily by water flushing.
Above all, the sealant composition of the present application achieves a good sealing performance for the puncture of the tire. Furthermore, the sealant composition is easy to use and non-perishable, and has a long shelf life, which endows the sealant composition with a good market prospect.
While the embodiments of the present application are described with reference to the accompanying drawings above, the present application is not limited to the above-mentioned specific implementations. In fact, the above-mentioned specific implementations are intended to be exemplary not to be limiting. In the inspiration of the present application, those ordinary skills in the art can also make many modifications without breaking away from the subject of the present application and the protection scope of the claims. All these modifications belong to the protection of the present application.
Claims (10)
1. A sealant composition, comprising: an adhesive agent consisting of latex emulsion, at least one nanoporous particle consisting essentially of zeolite, carbon aerogel, mesoporous carbon, activated carbon, cenosphere, porous metal, and organic chelating compounds, surfactant, anti-freezing agent, wetting agent, pH-modifier, and water, wherein the anti-freezing agent has a weight percentage in the sealant composition ranging from 40% to 90%, wherein the weight percentage of the nanoporous particles in the sealant composition is less than about 5%.
2. The sealant composition according to claim 1, wherein the organic chelating compounds comprise metal organic frameworks.
3. The sealant composition according to claim 1, wherein, the anti-freezing agent includes at least one of propylene glycol, glycerin, diethylene glycol, and 1,3-propanediol.
4. The sealant composition according to claim 1, wherein, the weight percentage of the latex emulsion in the sealant composition ranges from 2% to 20%.
5. The sealant composition according to claim 1, wherein, the weight percentage of the surfactant in the sealant composition ranges from 0.1% to 2.5%.
6. The sealant composition according to claim 1, wherein, the weight percentage of the wetting agent in the sealant composition ranges from 0.01% to 5%.
7. The sealant composition according to claim 1, wherein, the sealant composition further comprises anti-freezing additive, and the anti-freezing additive includes at least one of inorganic salts and organic salts.
8. The sealant composition according to claim 1, wherein, the sealant composition further comprises assisted additive, and the assisted additive includes at least one of anti-corrosion additive, insecticide, anti-foaming agent, preservative, colorant, and odorant.
9. The sealant composition according to claim 1, wherein viscosity of the sealant composition ranges from 18 to 800 mPas.
10. The sealant composition according to claim 1, wherein pH of the sealant composition ranges from 8 to 11.
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|---|---|---|---|
| CA2836978A CA2836978C (en) | 2013-12-18 | 2013-12-18 | Sealant composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2836978A CA2836978C (en) | 2013-12-18 | 2013-12-18 | Sealant composition |
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| Publication Number | Publication Date |
|---|---|
| CA2836978A1 CA2836978A1 (en) | 2015-06-18 |
| CA2836978C true CA2836978C (en) | 2018-10-16 |
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| CA2836978A Active CA2836978C (en) | 2013-12-18 | 2013-12-18 | Sealant composition |
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