A silent tire quick puncture repair glue and its preparation method

Abstract

The present invention relates to the technical field of tire repair glue, and specifically relates to a quick tire repair glue for silent tires and a preparation method thereof, which comprises the following raw materials in parts by weight: 30-60 parts of natural latex solution, 10-15 parts of terpene resin, 0.5-2.0 parts of nanoparticles, 8-12 parts of antifreeze, 10-20 parts of tackifier, 20-40 parts of solvent, 1-3 parts of emulsifier, 1-3 parts of antioxidant, and 1-3 parts of surfactant. The quick tire repair glue of the present invention has the advantages of low viscosity, high fluidity, good film-forming property, good impact resistance, good antifreeze effect and durability, and is suitable for large-scale production at the same time; by adopting the high-molecular long-chain winding technology, the natural latex solution, terpene resin material and nanoparticles are interpenetrated to form a mess at the punctured part of the tire to block the hole, so as to achieve the effect of tire repair. It can be used for a long time at -40°C to 80°C, has no corrosion to the tire, and has a long aging resistance time.

Description

Technical Field

[0001] The present invention relates to the technical field of puncture repair glue, and particularly relates to a silent tire quick puncture repair glue and a preparation method thereof. Background Art

[0002] At present, with the vigorous development of new energy vehicles, tire noise has become one of the main factors affecting vehicle comfort. Tire noise is mainly caused by the contact between the tire and the uneven road surface during the rotation of the tire, which causes the air inside the tire cavity to resonate due to the vibration of the tire. When the resonance frequency reaches a specific hertz, it will cause discomfort to the driver or passengers. Therefore, reducing tire noise has become an important requirement of consumers for vehicle comfort. The noise generated when the tire is running generally consists of external noise, such as tread noise and road surface noise, and internal cavity noise. Among them, the tire cavity noise is caused by the excitation input from the road surface and is the resonance of the ultra-low pressure sound system composed of the tire and the disc wheel, which is usually also called the tire resonance sound. The cavity noise frequency is between 200 - 300 Hz and is determined by the tire cavity structure. In the cavity inside the tire, adhering a silencer made of sponge-like material is a well-known method to reduce cavity noise. The mechanism of the sponge-like sound-absorbing cotton as a silencer is that there are countless micropores composed of air inside the sound-absorbing cotton, which can buffer and absorb sound waves, making it difficult for the sound waves to be reflected on the plane of the sound-absorbing cotton, thus achieving the effect of reducing noise.

[0003] However, with the popularization of new energy vehicles, more and more automobile factories have gradually cancelled the spare tire in order to achieve the effect of weight reduction of the vehicle. However, due to the complex road conditions, it is inevitable that the tire will be punctured by various sharp hard objects during driving, resulting in air leakage. Therefore, an automatic puncture repair device has become an essential item for vehicle travel. However, the puncture repair glue on the market today has the problems that the puncture repair glue injected into the silent tire is difficult to reach the inner wall of the tire in time through the sound-absorbing cotton layer or cannot penetrate through the sound-absorbing cotton layer to be evenly distributed on the inner wall of the tire, and thus cannot quickly penetrate into the air leakage part to block the air leakage hole and repair the air leakage hole. In addition, it has the disadvantages of large dosage, difficult to clean, and having a certain corrosiveness to the tire and the wheel hub. The existing puncture repair glue basically belongs to emergency supplies, and its adhesion effect and processing fluidity during coating are not very good, and there is no long-term puncture repair effect. Summary of the Invention

[0004] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the present invention is to provide a quick tire repair glue for silent tires. This quick tire repair glue has the advantages of low viscosity, high fluidity, fast tire repair speed, good film-forming property, good impact resistance, good anti-freezing effect and durability, and is suitable for large-scale production at the same time. By adopting the polymer long-chain entanglement technology, the natural latex liquid, terpene resin material and nanoparticles are interpenetrated to form a mess at the puncture of the tire to block the hole, so as to achieve the effect of tire repair. Among them, the nanoparticles adopted are arranged in parallel orientation in the rubber, and their edges or end faces are firmly combined with the rubber macromolecules at the nanoscale, so as to improve the tensile strength, elongation and elasticity of the film formed by the tire repair glue, as well as the flex resistance performance. The good dispersion performance makes the stress inside the rubber evenly distributed, greatly reducing the fragile surface between the nanoparticles and the rubber molecules, thereby accelerating the curing speed, improving the bonding effect, and also increasing the sealing and anti-seepage properties of the tire repair glue. The addition of the antifreeze further improves the anti-icing ability of the tire repair glue when the repaired tire encounters cold weather. It can be used for a long time at -40°C to 80°C, has no corrosion, no toxicity, is non-flammable, does not explode on the tire, has a long aging resistance time, is pollution-free to the environment, and is very convenient to use.

[0005] Another purpose of the present invention is to provide a preparation method of a quick tire repair glue for silent tires. This method is simple in operation, convenient to control, high in production efficiency, low in production cost, and the prepared quick tire repair glue has the advantages of low viscosity, high fluidity, fast tire repair speed, good film-forming property, good impact resistance, good anti-freezing effect and durability, and is suitable for large-scale production at the same time.

[0006] The purpose of the present invention is achieved by the following technical solutions: a quick tire repair glue for silent tires, comprising the following raw materials in parts by weight: 30-60 parts of natural latex liquid, 10-15 parts of terpene resin, 0.5-2 parts of nanoparticles, 8-12 parts of antifreeze, 10-20 parts of tackifier, 20-40 parts of solvent, 1-3 parts of emulsifier, 1-3 parts of antioxidant, 1-3 parts of surfactant; the solid content of the natural latex liquid is 30-40%.

[0007] More preferably, the quick tire repair glue for silent tires comprises the following raw materials in parts by weight: 30-60 parts of natural latex liquid, 10-15 parts of terpene resin, 0.6-1.2 parts of nanoparticles, 8-12 parts of antifreeze, 10-20 parts of tackifier, 20-40 parts of solvent, 1-3 parts of emulsifier, 1-3 parts of antioxidant, 1-3 parts of surfactant.

[0008] The quick tire repair glue in the present invention has the advantages of low viscosity, high fluidity, fast tire repair speed, good film-forming property, good impact resistance, good anti-freezing effect and durability, and is suitable for large-scale production at the same time. By adopting the polymer long-chain winding technology, natural latex, terpene resin material and nanoparticles are interpenetrated to form a mess at the punctured part of the tire to block the hole, so as to achieve the effect of tire repair. Among them, the nanoparticles adopted are arranged in parallel orientation in the rubber, and their edges or end faces are firmly combined with rubber macromolecules at the nanoscale, so as to improve the tensile strength, elongation and elasticity of the film formed by the tire repair glue, as well as the flex fatigue resistance. The good dispersion performance makes the stress inside the rubber evenly distributed, greatly reducing the weak surface between the nanoparticles and rubber molecules, thus accelerating the curing speed, improving the bonding effect, and at the same time increasing the sealing and anti-seepage properties of the tire repair glue. The natural latex adopted is preferably polyisoprene, which has good film-forming property, good elasticity and mechanical stability after film formation, is easy to block the punctured hole, has good adhesion to the tire and no damage to the tire, etc., and plays a role in tire repair. At the same time, the solid content of natural latex needs to be strictly controlled at 30-40%, which can effectively ensure the low viscosity and good rheological properties of the tire repair glue (avoiding the situation of blocking the valve when the tire repair glue is injected into the tire valve, and can smoothly pass through the sound insulation cotton to reach the inner wall of the tire), and good compatibility with other components. The addition of the antifreeze further improves the anti-icing ability of the tire repair glue when the tire is in cold weather, and can be used for a long time at -40°C to 80°C, has no corrosion to the tire, is non-toxic, non-flammable, non-explosive, has a long aging resistance time, has no pollution to the environment, and is very convenient to use.

[0009] When the ground contact surface of the tire is punctured and leaks air, the quick tire repair glue already injected into the tire quickly solidifies with the tire rubber to form a whole, so that the tire no longer leaks air. When the tire is punctured and leaks air again, the strong quick tire repair glue injected into the tire can automatically repair the puncture again. At the same time, after the tire is punctured and leaks air, the quick tire repair glue can not only make the leaking tire airtight but also automatically inflate to reach the normal driving tire pressure. When the external environmental temperature is high, or when the vehicle is driving continuously for a long time, the tire temperature rises, increasing the risk of tire blowout and accelerating tire aging.

[0010] Preferably, the nanoparticles include at least one of modified nano calcium carbonate, nano kaolin, and montmorillonite.

[0011] The specific nanoparticles adopted in the present invention can maintain low hardness, high reinforcement, low Mooney viscosity, maintain the high fluidity of the product, and can further improve the fluidity of the tire repair glue, facilitating passing through the sound insulation cotton to reach the punctured part of the inner wall of the tire to form a mess to block the hole, so as to achieve the effect of tire repair.

[0012] Preferably, the modified nano calcium carbonate includes the following raw materials in parts by weight:

[0013] 40 - 60 parts of nano calcium carbonate, 4 - 8 parts of polyethylene glycol, 4 - 8 parts of dispersant, 1 - 3 parts of surfactant (Span 80), 3 - 6 parts of palmitic acid (fatty acid), and 1 - 3 parts of iron-sodium diethylenetriaminepentaacetic acid complex; the dispersant is a mixture composed of polyoxyethylene glycerol ether monostearate and N-stearyl erucamide in a weight ratio of 0.8 - 1.2:1.

[0014] Preferably, the modified nano calcium carbonate is prepared by the following method:

[0015] S1. Take nano calcium carbonate according to weight parts, add the nano calcium carbonate into deionized water and disperse it evenly to form a calcium carbonate suspension with a mass fraction of 10 - 12%, and set aside.

[0016] S2. According to weight parts, add the dispersant and Span 80 into the suspension obtained in step S1, heat it to 45 - 55°C, continuously stir at a rate of 150 - 250 r / min for 20 - 40 min, and then perform ultrasonic treatment for 3 - 7 min to obtain a modified slurry, and set aside.

[0017] S3. According to weight parts, add polyethylene glycol, palmitic acid, and iron-sodium diethylenetriaminepentaacetic acid complex into the modified slurry obtained in step S2, heat it to 70 - 80°C and mix evenly to obtain a modified nano calcium carbonate slurry, and set aside.

[0018] S4. The modified nano calcium carbonate slurry obtained in step S3 is successively filtered by pressure and centrifugally dehydrated, and dried at 70 - 80°C and sieved through a 100 - 110 mesh sieve to obtain the modified nano calcium carbonate.

[0019] In the present invention, through surface modification of nano calcium carbonate, it is preliminarily activated. By utilizing the high dispersibility and compatibility of the dispersant, nano calcium carbonate with fluidity and dispersibility is obtained, preventing the agglomeration of nano calcium carbonate, reducing the mechanical resistance during the surface modification process, and improving the performance of the later modified nano calcium carbonate. In the surface modification, ferric-sodium diethylenetriaminepentaacetate complex is introduced. It is a very effective antioxidant. When acting as an antioxidant, the trivalent iron free radical is reduced to divalent iron, and the free radical is oxidized to +1 valence (Fe3+ + R· → Fe2+ + R1). The R1 with +1 valence does not participate in the chain reaction and disappears quickly, playing a role in blocking the cycle and achieving the purpose of preventing oxidation. The surface of the modified nano calcium carbonate is coated with stearate. At the same time, stearate and ferric-sodium diethylenetriaminepentaacetate complex form chemical adsorption on the surface of calcium carbonate, forming a network crosslinked structure, thereby improving the mechanical properties of the tire repair glue. Moreover, it can also increase the hydrophobicity of the surface of nano calcium carbonate, making it easy to disperse in the polymer, reducing the agglomeration of nanoparticles, and being beneficial to improving the fluidity of the tire repair glue, facilitating it to pass through the soundproof cotton to reach the puncture point on the inner wall of the tire and form a mess to block the hole, thus achieving the effect of tire repair.

[0020] Preferably, the antifreeze is one or more of 1,2 - propylene glycol, amine phosphate ester, alkyl succinimide, and polyethylene glycol.

[0021] In the present invention, by adding the above - mentioned mixed antifreeze into this rapid tire repair glue, since the vapor pressure of the cooling water in the rapid tire repair glue is changed, the freezing point of the rapid tire repair glue is significantly reduced, so that the tire repair glue can be used for a long time at - 40°C.

[0022] Preferably, the tackifier is at least one of styrene - butadiene latex and halogenated butyl rubber.

[0023] The styrene - butadiene latex used in the tackifier of the present invention has a strong binding force with the tire, stable performance, and is used in combination with halogenated butyl rubber, terpene resin, and natural latex solution to accelerate the film - forming speed and film - forming strength of the tire repair glue when the tire leaks air, block the holes, and achieve the tire repair effect.

[0024] Preferably, the solvent is at least one of deionized water, ethylene glycol, and glycerol.

[0025] Preferably, the emulsifier is one or more of sodium laureth sulfate, ammonium laureth sulfate, sodium lauryl sulfate, lauroyl glutamate, alkyl polyether, and fatty alcohol polyoxyethylene ether.

[0026] The above - mentioned emulsifier used in the present invention has various hydrophilic - lipophilic balance values and can form a monolayer on the interface of two immiscible liquids, reducing their interfacial tension.

[0027] Preferably, the antioxidant is antioxidant 1010 and antioxidant 168.

[0028] The antioxidant 1010 used in the present invention can effectively prevent the thermo-oxidative degradation of the tire repair rubber during long-term aging, thereby extending the service life of the tire repair rubber in the present invention. In addition, it can be used in combination with antioxidant 168 to have a synergistic effect, giving the tire repair rubber additional long-term protection.

[0029] Preferably, the surfactant is at least one of nonylphenol polyoxyethylene ether, sodium dodecylbenzenesulfonate, and anionic polyacrylamide.

[0030] The above surfactants are mainly used in the present invention to ensure the overall stability of the repair agent, ensuring that the solid content in the tire repair rubber is not easily precipitated and the repair agent does not agglomerate on its own without external friction.

[0031] The present invention also provides a method for preparing a quick tire repair rubber for silent tires, which is obtained through the following steps:

[0032] 1) By weight, disperse natural latex, nanoparticles, and terpene resin into a solvent and add them to a reaction device. Heat to 50 - 70 °C and stir at a rate of 300 - 400 r / min for 30 - 60 min to obtain mixture A for standby;

[0033] 2) Mix the tackifier, emulsifier, and surfactant, heat to 40 - 60 °C, and stir and mix evenly to obtain mixture B for standby;

[0034] 3) Add the mixture B obtained in step 2) to the mixture A obtained in step 1), then add the antifreeze and antioxidant, heat to 40 - 60 °C, stir at a rate of 300 - 600 r / min for 1 - 3 h, and then cool to room temperature and filter to obtain the tire repair rubber.

[0035] The beneficial effects of the present invention are as follows: The quick tire repair glue of the present invention has the advantages of low viscosity, high fluidity, fast tire repair speed, good film-forming property, good impact resistance, good anti-freezing effect and durability, and is suitable for large-scale production; by adopting the polymer long-chain winding technology, the natural latex liquid, terpene resin material and nanoparticles are interpenetrated to form a mess at the puncture of the tire to block the hole, so as to achieve the effect of tire repair. The nanoparticles used are arranged in parallel orientation in the rubber, and their edges or end faces are firmly combined with the rubber macromolecules at the nanoscale, so as to improve the tensile strength, elongation and elasticity of the film formed by the tire repair glue, as well as the flex resistance performance, good dispersion performance, make the stress inside the rubber evenly distributed, greatly reduce the weak surface between the nanoparticles and the rubber molecules, thus accelerating the curing speed, improving the bonding effect, and also increasing the sealing and anti-seepage properties of the tire repair glue. The addition of the antifreeze further enhances the anti-icing ability of the tire repair glue when the repaired tire encounters cold weather, and can be used for a long time at -40°C to 80°C, has no corrosion, no toxicity, non-flammability, non-explosion to the tire, has a long aging resistance time, no pollution to the environment, and is very convenient to use. Specific embodiments

[0036] For the convenience of those skilled in the art, the present invention will be further described below in conjunction with embodiments. The content mentioned in the embodiments does not limit the present invention.

[0037] Example 1

[0038] A quick tire repair glue for a silent tire comprises the following raw materials in parts by weight: 30 parts of natural latex liquid, 10 parts of terpene resin, 0.5 part of nanoparticles, 8 parts of antifreeze, 10 parts of tackifier, 20 parts of solvent, 1 part of emulsifier, 1 part of antioxidant, 1 part of surfactant; the solid content of the natural latex liquid is 30%.

[0039] The nanoparticles are modified nano calcium carbonate.

[0040] The modified nano calcium carbonate comprises the following raw materials in parts by weight:

[0041] 40 parts of nano calcium carbonate, 4 parts of polyethylene glycol, 4 parts of dispersant, 1 part of span 80, 3 parts of palmitic acid and 1 part of diethylenetriamine pentaacetic acid iron-sodium complex.

[0042] The dispersant is a mixture composed of polyoxyethylene glycerol ether monostearate and N-stearyl erucamide in a weight ratio of 0.8:1; the polyoxyethylene glycerol ether monostearate is stearate SG produced by Jiangsu Aichuangde Chemical Technology Co., Ltd., and the N-stearyl erucamide is stearyl erucamide produced by Kunshan Qianyideng Biotechnology Co., Ltd.

[0043] The modified nano calcium carbonate is prepared by the following method:

[0044] S1. Take nano calcium carbonate by weight parts, add the nano calcium carbonate into deionized water and disperse it evenly to form a calcium carbonate suspension with a mass fraction of 10%, and set aside.

[0045] S2. By weight parts, add a dispersant and Span 80 into the suspension obtained in step S1, heat it to 45 °C, continuously stir it at a rate of 150 r / min for 20 min, and then perform ultrasonic treatment for 3 min to obtain a modified slurry, and set aside.

[0046] S3. By weight parts, add polyethylene glycol, palmitic acid and ferric-sodium diethylenetriaminepentaacetate complex into the modified slurry obtained in step S2 and heat it to 70 °C to mix evenly to obtain a modified nano calcium carbonate slurry, and set aside; wherein, the ferric-sodium diethylenetriaminepentaacetate complex is the ferric-sodium diethylenetriaminepentaacetate complex 12389-75-2 produced by Hubei Yongkuo Technology Co., Ltd.

[0047] S4. Filter the modified nano calcium carbonate slurry obtained in step S3 by pressure filtration and then dehydrate it by centrifugation, and dry it at 70 °C and pass through a 100-mesh sieve to obtain modified nano calcium carbonate.

[0048] The antifreeze is 1,2-propanediol.

[0049] The tackifier is styrene-butadiene latex.

[0050] The solvent is deionized water.

[0051] The emulsifier is sodium lauryl polyoxyethylene ether sulfate.

[0052] The antioxidant is antioxidant 1010 and antioxidant 168, and the antioxidant 1010 and antioxidant 168 are composed according to a weight ratio of 0.8:1.

[0053] The surfactant is nonylphenol polyoxyethylene ether.

[0054] The quick puncture repair glue for silent tires is prepared by the following steps:

[0055] 1) By weight parts, disperse natural latex, nanoparticles and terpene resin into a solvent and add them into a reaction device, heat it to 50 °C and stir it at a rate of 300 r / min for 30 min to obtain a mixture A, and set aside;

[0056] 2) Mix the tackifier, emulsifier and surfactant, heat it to 40 °C and stir and mix evenly to obtain a mixture B, and set aside.

[0057] 3) Add the mixture B obtained in step 2) to the mixture A obtained in step 1), then add the antifreeze and antioxidant, heat to 40 °C, stir at a rate of 300 r / min for 1 h, and then cool to room temperature and filter to obtain the tire repair glue.

[0058] Example 2

[0059] A kind of quick tire repair glue for silent tires, comprising the following raw materials in parts by weight: 38 parts of natural latex liquid, 12 parts of terpene resin, 0.6 part of nanoparticles, 9 parts of antifreeze, 13 parts of tackifier, 25 parts of solvent, 1.5 parts of emulsifier, 1.5 parts of antioxidant, 1.5 parts of surfactant; the solid content of the natural latex liquid is 33%.

[0060] The nanoparticles are modified nano calcium carbonate.

[0061] The modified nano calcium carbonate comprises the following raw materials in parts by weight:

[0062] 45 parts of nano calcium carbonate, 5 parts of polyethylene glycol, 5 parts of dispersant, 1.5 parts of span 80, 4 parts of palmitic acid and 1.5 parts of ferric-sodium diethylenetriaminepentaacetic acid complex.

[0063] The dispersant is a mixture composed of polyoxyethylene glycerol ether monostearate and N-stearyl erucamide in a weight ratio of 0.9:1; the polyoxyethylene glycerol ether monostearate is stearate SG produced by Jiangsu Aichuangde Chemical Technology Co., Ltd., and the N-stearyl erucamide is stearyl erucamide produced by Kunshan Qianyideng Biotechnology Co., Ltd.

[0064] The modified nano calcium carbonate is prepared by the following method:

[0065] S1. Weigh nano calcium carbonate according to the parts by weight, add the nano calcium carbonate to deionized water and disperse it evenly to form a calcium carbonate suspension with a mass fraction of 10.5%, and set aside;

[0066] S2. According to the parts by weight, add the dispersant and span 80 to the suspension obtained in step S1, heat to 48 °C, continuously stir at a rate of 180 r / min for 25 min, and then perform ultrasonic treatment for 4 min to obtain a modified slurry, and set aside

[0067] S3. According to the parts by weight, add polyethylene glycol, palmitic acid and ferric-sodium diethylenetriaminepentaacetic acid complex to the modified slurry obtained in step S2 and heat to 73 °C to mix evenly to obtain a modified nano calcium carbonate slurry, and set aside; among them, the ferric-sodium diethylenetriaminepentaacetic acid complex is ferric-sodium diethylenetriaminepentaacetic acid complex 12389-75-2 produced by Hubei Yongkuo Technology Co., Ltd.;

[0068] S4. The modified nano calcium carbonate slurry obtained in step S3 is successively subjected to pressure filtration and centrifugal dehydration, dried at 73 °C, and sieved through a 103-mesh sieve to obtain modified nano calcium carbonate.

[0069] The antifreeze is 1,2-propanediol.

[0070] The tackifier is styrene-butadiene latex.

[0071] The solvent is deionized water.

[0072] The emulsifier is ammonium lauryl polyoxyethylene ether sulfate.

[0073] The antioxidant is antioxidant 1010 and antioxidant 168, and antioxidant 1010 and antioxidant 168 are composed according to a weight ratio of 0.9:1.

[0074] The surfactant is nonylphenol polyoxyethylene ether.

[0075] The quick tire repair glue for silent tires is prepared by the following steps:

[0076] 1) By weight, disperse natural latex, nanoparticles and terpene resin into a solvent and add them into a reaction device, heat to 55 °C and stir at a rate of 325 r / min for 38 min to obtain mixture A for standby;

[0077] 2) Mix the tackifier, emulsifier and surfactant, heat to 45 °C and stir to mix evenly to obtain mixture B for standby;

[0078] 3) Add the mixture B obtained in step 2) to the mixture A obtained in step 1), then add the antifreeze and antioxidant, heat to 45 °C, stir at a rate of 380 r / min for 1.5 h, and then cool to room temperature and filter to obtain the tire repair glue.

[0079] Example 3

[0080] A quick tire repair glue for silent tires, comprising the following raw materials by weight: 45 parts of natural latex, 13 parts of terpene resin, 1.2 parts of nanoparticles, 10 parts of antifreeze, 15 parts of tackifier, 30 parts of solvent, 2 parts of emulsifier, 2 parts of antioxidant, 2 parts of surfactant; the solid content of the natural latex is 35%.

[0081] The nanoparticles are modified nano calcium carbonate.

[0082] The modified nano calcium carbonate comprises the following raw materials by weight:

[0083] 50 parts of nano calcium carbonate, 6 parts of polyethylene glycol, 6 parts of dispersant, 2 parts of span 80, 5 parts of palmitic acid and 2 parts of ferric-sodium diethylenetriaminepentaacetate complex.

[0084] The dispersant is a mixture composed of polyoxyethylene glycerol ether monostearate and N-stearyl erucamide in a weight ratio of 1.0:1; the polyoxyethylene glycerol ether monostearate uses stearate SG produced by Jiangsu Aichuangde Chemical Technology Co., Ltd., and the N-stearyl erucamide uses stearyl erucamide produced by Kunshan Qianyideng Biotechnology Co., Ltd.

[0085] The modified nano calcium carbonate is prepared by the following method:

[0086] S1. Take nano calcium carbonate by weight, add the nano calcium carbonate into deionized water and disperse it evenly to form a calcium carbonate suspension with a mass fraction of 11%, and set aside;

[0087] S2. By weight, add the dispersant and span 80 into the suspension obtained in step S1, heat it to 50 °C, continuously stir at a rate of 200 r / min for 30 min, and then perform ultrasonic treatment for 5 min to obtain a modified slurry, and set aside

[0088] S3. By weight, add polyethylene glycol, palmitic acid and diethylenetriamine pentaacetic acid iron-sodium complex into the modified slurry obtained in step S2, heat it to 75 °C and mix evenly to obtain a modified nano calcium carbonate slurry, and set aside; among them, the diethylenetriamine pentaacetic acid iron-sodium complex uses the diethylenetriamine pentaacetic acid iron-sodium complex 12389-75-2 produced by Hubei Yongkuo Technology Co., Ltd.;

[0089] S4. The modified nano calcium carbonate slurry obtained in step S3 is successively subjected to pressure filtration and centrifugal dehydration, dried at 75 °C, and passed through a 105-mesh sieve to obtain modified nano calcium carbonate.

[0090] The antifreeze is a mixture composed of 1,2-propanediol and polyethylene glycol in a weight ratio of 0.8:1.

[0091] The thickener is styrene-butadiene latex.

[0092] The solvent is a mixture composed of deionized water and ethylene glycol in a weight ratio of 0.9:1.

[0093] The emulsifier is lauroyl glutamate.

[0094] The antioxidant is antioxidant 1010 and antioxidant 168, and the antioxidant 1010 and antioxidant 168 are composed in a weight ratio of 1.0:1.

[0095] The surfactant is nonylphenol polyoxyethylene ether.

[0096] The quick puncture repair glue for silent tires is prepared by the following steps:

[0097] 1) By weight parts, disperse natural latex, nanoparticles and terpene resin into a solvent and add them into a reaction device. Heat to 60 °C and stir at a rate of 350 r / min for 45 min to obtain mixture A for standby.

[0098] 2) Mix tackifier, emulsifier and surfactant, heat to 45 °C and stir to mix evenly to obtain mixture B for standby.

[0099] 3) Add mixture B obtained in step 2) into mixture A obtained in step 1), then add antifreeze and antioxidant, heat to 50 °C, stir at a rate of 450 r / min for 2 h, and then cool to room temperature and filter to obtain the tire repair glue.

[0100] Example 4

[0101] A quick tire repair glue for silent tires, comprising the following raw materials by weight parts: 52 parts of natural latex, 14 parts of terpene resin, 1.7 parts of nanoparticles, 11 parts of antifreeze, 18 parts of tackifier, 35 parts of solvent, 2.5 parts of emulsifier, 2.5 parts of antioxidant, 2.5 parts of surfactant; the solid content of the natural latex is 38%.

[0102] The modified nano calcium carbonate comprises the following raw materials by weight parts:

[0103] 55 parts of nano calcium carbonate, 7 parts of polyethylene glycol, 7 parts of dispersant, 2.5 parts of span 80, 6 parts of palmitic acid and 2.5 parts of ferric-sodium diethylenetriaminepentaacetic acid complex.

[0104] The dispersant is a mixture composed of polyoxyethylene glycerol ether monostearate and N-stearyl erucamide in a weight ratio of 1.1:1; the polyoxyethylene glycerol ether monostearate uses stearate SG produced by Jiangsu Aichuangde Chemical Technology Co., Ltd., and the N-stearyl erucamide uses stearyl erucamide produced by Kunshan Qianyideng Biotechnology Co., Ltd.

[0105] The nanoparticles are modified nano calcium carbonate.

[0106] The modified nano calcium carbonate is prepared by the following method:

[0107] S1. Take nano calcium carbonate by weight parts, add nano calcium carbonate into deionized water and disperse evenly to form a calcium carbonate suspension with a mass fraction of 11.5% for standby.

[0108] S2. By weight parts, add the dispersant and span 80 into the suspension obtained in step S1, heat to 53 °C, continuously stir at a rate of 230 r / min for 35 min, and then perform ultrasonic treatment for 6 min to obtain a modified slurry for standby.

[0109] S3. By weight parts, add polyethylene glycol, palmitic acid and iron-sodium diethylenetriaminepentaacetate complex to the modified slurry obtained in step S2, and heat to 78 °C to mix evenly to obtain a modified nano calcium carbonate slurry for standby; wherein, the iron-sodium diethylenetriaminepentaacetate complex is the iron-sodium diethylenetriaminepentaacetate complex 12389-75-2 produced by Hubei Yongkuo Technology Co., Ltd.;

[0110] S4. Subject the modified nano calcium carbonate slurry obtained in step S3 to pressure filtration and centrifugal dehydration successively, and dry it under the condition of 78 °C and pass through a 108-mesh sieve to obtain modified nano calcium carbonate.

[0111] The antifreeze is 1,2-propanediol.

[0112] The tackifier is styrene-butadiene latex.

[0113] The solvent is deionized water.

[0114] The emulsifier is sodium lauryl polyoxyethylene ether sulfate.

[0115] The antioxidant is antioxidant 1010 and antioxidant 168, and the antioxidant 1010 and antioxidant 168 are composed according to a weight ratio of 1.1:1.

[0116] The surfactant is sodium dodecylbenzenesulfonate.

[0117] The quick tire repair glue for silent tires is prepared by the following steps:

[0118] 1) By weight parts, disperse natural latex, nanoparticles and terpene resin into a solvent and add them to a reaction device, heat to 65 °C and stir at a rate of 375 r / min for 52 min to obtain a mixture A for standby;

[0119] 2) Mix the tackifier, emulsifier and surfactant, heat to 55 °C and stir to mix evenly to obtain a mixture B for standby;

[0120] 3) Add the mixture B obtained in step 2) to the mixture A obtained in step 1), then add the antifreeze and antioxidant, heat to 55 °C, stir at a rate of 520 r / min for 2.5 h, and then cool to room temperature and filter to obtain the tire repair glue.

[0121] Example 5

[0122] A quick tire repair glue for silent tires, comprising the following raw materials by weight parts: 60 parts of natural latex, 15 parts of terpene resin, 2 parts of nanoparticles, 12 parts of antifreeze, 20 parts of tackifier, 40 parts of solvent, 3 parts of emulsifier, 3 parts of antioxidant, 3 parts of surfactant; the solid content of the natural latex is 40%.

[0123] The nanoparticles are modified nano calcium carbonate.

[0124] The modified nano calcium carbonate comprises the following raw materials in parts by weight:

[0125] 60 parts of nano calcium carbonate, 8 parts of polyethylene glycol, 8 parts of dispersant, 3 parts of span 80, 6 parts of palmitic acid and 3 parts of iron-sodium diethylenetriaminepentaacetic acid complex.

[0126] The dispersant is a mixture composed of polyoxyethylene glycerol ether monostearate and N-stearyl erucamide in a weight ratio of 1.2:1; the polyoxyethylene glycerol ether monostearate is stearate SG produced by Jiangsu Aichuangde Chemical Technology Co., Ltd., and the N-stearyl erucamide is stearyl erucamide produced by Kunshan Qianyideng Biotechnology Co., Ltd.

[0127] The modified nano calcium carbonate is prepared by the following method:

[0128] S1. Take nano calcium carbonate according to parts by weight, add the nano calcium carbonate into deionized water and disperse it evenly to form a calcium carbonate suspension with a mass fraction of 12%, and set aside;

[0129] S2. According to parts by weight, add the dispersant and span 80 into the suspension obtained in step S1, heat to 55°C, continuously stir at a rate of 250 r / min for 40 min, and then perform ultrasonic treatment for 7 min to obtain a modified slurry, and set aside

[0130] S3. According to parts by weight, add polyethylene glycol, palmitic acid and iron-sodium diethylenetriaminepentaacetic acid complex into the modified slurry obtained in step S2, heat to 80°C and mix evenly to obtain a modified nano calcium carbonate slurry, and set aside; wherein, the iron-sodium diethylenetriaminepentaacetic acid complex is iron-sodium diethylenetriaminepentaacetic acid complex 12389-75-2 produced by Hubei Yongkuo Technology Co., Ltd.;

[0131] S4. The modified nano calcium carbonate slurry obtained in step S3 is successively subjected to pressure filtration and centrifugal dehydration, and dried at 80°C and sieved through a 110-mesh sieve to obtain modified nano calcium carbonate.

[0132] The antifreeze is a mixture composed of 1,2-propanediol and alkyl succinimide in a weight ratio of 1.2:1.

[0133] The thickener is styrene-butadiene latex.

[0134] The solvent is a mixture composed of deionized water and glycerol in a weight ratio of 1.1:1.

[0135] The emulsifier is sodium lauryl polyoxyethylene ether sulfate.

[0136] The antioxidant is antioxidant 1010 and antioxidant 168, and antioxidant 1010 and antioxidant 168 are composed in a weight ratio of 1.2:1.

[0137] The surfactant is nonylphenol polyoxyethylene ether.

[0138] The quick tire repair glue for silent tires is prepared by the following steps:

[0139] 1) By weight, disperse natural latex, nanoparticles and terpene resin into a solvent and add them into a reaction device, heat to 70 °C and stir at a rate of 400 r / min for 60 min to obtain mixture A for standby;

[0140] 2) Mix the tackifier, emulsifier and surfactant, heat to 60 °C and stir and mix evenly to obtain mixture B for standby;

[0141] 3) Add the mixture B obtained in step 2) to the mixture A obtained in step 1), then add the antifreeze and antioxidant, heat to 60 °C, stir at a rate of 600 r / min for 3 h, and then cool to room temperature and filter to obtain the tire repair glue.

[0142] Comparative Example 1

[0143] The difference between this comparative example and Example 3 above is that: in this comparative example, nano calcium carbonate was not modified when preparing the quick tire repair glue, and the remaining raw materials were mixed according to the ratio of Example 3. The rest of this comparative example is the same as that of Example 3 and will not be elaborated here.

[0144] Comparative Example 2

[0145] The difference between this comparative example and Example 3 above is that: in this comparative example, a tackifier and terpene resin were not used when preparing the quick tire repair glue. The rest of this comparative example is the same as that of Example 3 and will not be elaborated here.

[0146] The physical properties of the quick tire repair glue prepared in Example 3 and Comparative Examples 1-2 respectively, and the commercially available tire repair liquid of model 1613TS vacuum tire provided by Dongguan Kaishang Industry Co., Ltd. were detected (where the test standard for viscosity is GB-T 9751-1988; the test standard for adhesive strength is measured by the method for measuring the adhesion of the glue film in GB1720-1979), and the results are shown in Table 1.

[0147] Table 1

[0148]

[0149]

[0150] As can be seen from Example 3, the quick tire repair glue prepared by the present invention has the advantages of low viscosity, short tire repair time, high bonding strength, and good sealing performance under low temperature, normal temperature and high temperature conditions.

[0151] From the above results, it can be seen that the quick tire repair glue prepared in Example 3 of the present invention has excellent performance in various aspects. The quick tire repair glue has low viscosity, short tire repair time, high bonding strength, and good sealing performance under low temperature, normal temperature and high temperature conditions. The viscosity is moderate, which can well penetrate through the sound-absorbing cotton to reach the puncture point on the inner wall of the tire and form a mess to block the hole, thus achieving the effect of tire repair. At the same time, the quick tire repair glue also has excellent anti-freezing effect and environmental protection advantages, and is suitable for large-scale production.

[0152] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A quick tire repair glue for silent tires, characterized in that: It comprises the following raw materials in parts by weight: 30 - 60 parts of natural latex, 10 - 15 parts of terpene resin, 0.5 - 2.0 parts of nanoparticles, 8 - 12 parts of antifreeze, 10 - 20 parts of tackifier, 20 - 40 parts of solvent, 1 - 3 parts of emulsifier, 1 - 3 parts of antioxidant, 1 - 3 parts of surfactant; the nanoparticles include at least one of modified nano calcium carbonate, nano kaolin, and montmorillonite; the modified nano calcium carbonate comprises the following raw materials in parts by weight: 40 - 60 parts of nano calcium carbonate, 4 - 8 parts of polyethylene glycol, 4 - 8 parts of dispersant, 1 - 3 parts of span 80, 3 - 6 parts of palmitic acid, and 1 - 3 parts of iron-sodium diethylenetriaminepentaacetic acid complex; the dispersant is a mixture composed of polyoxyethylene glycerol ether monostearate and N-stearyl erucamide in a weight ratio of 0.8 - 1.2:

1.

2. The quick tire repair glue for silent tires according to claim 1, characterized in that: It comprises the following raw materials in parts by weight: 30 - 60 parts of natural latex, 10 - 15 parts of terpene resin, 0.6 - 1.2 parts of nanoparticles, 8 - 12 parts of antifreeze, 10 - 20 parts of tackifier, 20 - 40 parts of solvent, 1 - 3 parts of emulsifier, 1 - 3 parts of antioxidant, 1 - 3 parts of surfactant.

3. The quick tire repair glue for silent tires according to claim 1, characterized in that: The modified nano calcium carbonate is prepared by the following method: S1. Take nano calcium carbonate according to the parts by weight, add the nano calcium carbonate into deionized water and disperse it evenly to form a calcium carbonate suspension with a mass fraction of 10 - 12%, and set aside. S2. According to the parts by weight, add the dispersant and span 80 into the suspension obtained in step S1, heat it to 45 - 55°C, continuously stir at a rate of 150 - 250 r / min for 20 - 40 min, and then perform ultrasonic treatment for 3 - 7 min to obtain a modified slurry, and set aside. S3. According to the parts by weight, add polyethylene glycol, palmitic acid, and iron-sodium diethylenetriaminepentaacetic acid complex into the modified slurry obtained in step S2, and heat it to 70 - 80°C and mix evenly to obtain a modified nano calcium carbonate slurry, and set aside. S4. The modified nano calcium carbonate slurry obtained in step S3 is successively subjected to pressure filtration and centrifugal dehydration, and dried at 70 - 80°C and passed through a 100 - 110 mesh sieve to obtain modified nano calcium carbonate.

4. The quick tire repair glue for silent tires according to claim 1, characterized in that: The antifreeze is one or more of 1,2 - propylene glycol, phosphate ester amine, alkyl succinimide, and polyethylene glycol.

5. The quick tire repair glue for silent tires according to claim 1, characterized in that: The tackifier is at least one of styrene-butadiene latex and halogenated butyl rubber.

6. The quick tire repair glue for silent tires according to claim 1, characterized in that: The solvent is at least one of deionized water, ethylene glycol, and glycerol.

7. The quick tire repair glue for silent tires according to claim 1, characterized in that: The surfactant is at least one of nonylphenol polyoxyethylene ether, sodium dodecylbenzenesulfonate, and anionic polyacrylamide.

8. A preparation method of the quick tire repair glue for silent tires according to any one of claims 1-7, characterized in that: It is prepared by the following steps: 1) According to the parts by weight, disperse the natural latex, nanoparticles, and terpene resin into the solvent and add them into a reaction device, heat it to 50 - 70°C and stir at a rate of 300 - 400 r / min for 30 - 60 min to obtain mixture A, and set aside. 2) Mix the tackifier, emulsifier, and surfactant, heat it to 40 - 60°C and stir and mix evenly to obtain mixture B, and set aside. 3) Add the mixture B obtained in step 2) to the mixture A obtained in step 1), then add the antifreeze and antioxidant, heat to 40 - 60 °C, stir at a rate of 300 - 600 r / min for 1 - 3 h, and then cool to room temperature and filter to obtain the tire repair glue.

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