Low-temperature-resistant environment-friendly tire sealant and manufacturing method thereof

An environment-friendly and sealant technology, applied in the direction of adhesive additives, non-polymer adhesive additives, polymer adhesive additives, etc., can solve the problems of aging resistance, high raw material costs, single product types, etc. problems, to achieve the effects of energy saving and environmental protection in the preparation process, excellent barrier properties, and a wide range of sources

Inactive Publication Date: 2019-03-05
成都昂多生物技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solid viscose, such as isoprene rubber, silicone rubber, butadiene rubber, is effective in anti-puncture and leakage prevention of tires, but the high cost of raw materials, softness, and aging resistance are difficult to meet the requirements; the development of rubber-plastic composite materials such as thermoplastic elastomers , has opened up a new direction for tire sealants. At present, most of the raw materials used in China rely on imports, which are costly and have a single product category; , Adhesives and other fields are widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] At least one of the polyester diols PEA, PBA, and PCL is vacuum dried and dehydrated at 100~120℃ for 2h, and then the polyester diol, toluene diisocyanate (TDI), catalyst N-methylpyrrolidone (NMP), dilaurin Dibutyl tin acid (DBTDL) was added to the reaction kettle and heated to 75~85℃ to react for 1~2h; then the temperature was lowered to 40~50℃, and 1,4-butanediol (BDO) and dimethylolpropionic acid were added. (DMPA) and trimethylolpropane (TMP) for chain extension reaction; add triethylamine (TEA) at 40℃ for neutralization, then add ethylenediamine (EDA) aqueous solution for emulsification; control the temperature at 20~ Slowly add polyvinyl alcohol (PVA) aqueous solution, propylene glycol, fluorocarbon surfactant, defoamer, leveling agent, and tackifier at 40°C, and stir well to obtain an energy-saving and environmentally-friendly water-soluble tire sealant.

Embodiment 2

[0017] At least one of polyether glycol PTMG and N220 is dried and dehydrated under vacuum at 100~120℃ for 2h, and then the polyether glycol, hexamethylene diisocyanate (HDI), catalyst N-methylpyrrolidone (NMP), two Dibutyltin laurate (DBTDL) was added to the reactor, and the temperature was raised to 75~85℃ to react for 1~2h; then the temperature was lowered to 40~50℃, and 1,4-butanediol (BDO) and dimethylolpropane were added. Acid (DMPA) and trimethylolpropane (TMP) for chain extension reaction; Add triethylamine (TEA) at 40℃ for neutralization, and then add ethylenediamine (EDA) aqueous solution for emulsification; control the temperature to 20 Slowly add polyvinyl alcohol (PVA) aqueous solution, propylene glycol, fluorocarbon surfactant, defoamer, leveling agent, and tackifier at ~40°C, and stir thoroughly to obtain an energy-saving and environmentally-friendly water-soluble tire sealant.

Embodiment 3

[0019] Polyester diol PBA is vacuum dried and dehydrated at 100~120℃ for 2h, then polyester diol PBA, toluene diisocyanate (TDI), catalyst N-methylpyrrolidone (NMP), dibutyl tin dilaurate (DBTDL) Put it into the reaction kettle, increase the temperature to 75~85℃ and react for 1~2h; then lower the temperature to 40~50℃, add 1,4-butanediol (BDO), dimethylolpropionic acid (DMPA), trihydroxyl Methyl propane (TMP) for chain extension reaction; Add methyl methacrylate (MMA) at 40°C, add triethylamine (TEA) for neutralization, and then add ethylenediamine (EDA) aqueous solution for emulsification. The temperature of the emulsion rose to 65~85℃ and continued to add methyl methacrylate (MMA), while adding at least one of the initiator potassium persulfate and azobisisobutyronitrile AIBN; control the temperature to 20~40℃ and slowly add the Vinyl alcohol (PVA) aqueous solution, propylene glycol, fluorocarbon surfactants, defoamers, leveling agents, tackifiers, fully stirred to obtain en...

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PUM

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Abstract

The invention relates to a low-temperature-resistant environment-friendly tire sealant and a manufacturing method thereof. The tire sealant comprises water-based polyurethane resin, polyvinyl alcohol,propylene glycol and a fluorocarbon surfactant. The preparation method comprises the following steps: step 1, adding vacuum dehydrated oligomer polyol, isocyanate, a catalyst N-methyl pyrrolidone anddibutyltin dilaurate into a reaction kettle for a reaction; step 2, adding 1,4-butanediol, dimethylolpropionic acid and trimethylolpropane for carrying out a chain extension reaction; step 3, addingtriethylamine for neutralization, and then adding the obtained material into an ethylenediamine water solution for emulsification; and step 4, slowly adding a polyvinyl alcohol water solution, propylene glycol and a fluorocarbon surfactant, meanwhile, adding a defoaming agent, a flatting agent and a tackifier, and fully carrying out stirring to obtain a final product. The low-temperature-resistantenvironment-friendly tire sealant is wide in raw material source, the preparation process saves energy and is environmentally friendly, the bonding performance and low-temperature resistance are good, and blocking performance is excellent.

Description

Technical field [0001] The invention relates to a new polymer material, in particular to a low-temperature-resistant and environment-friendly tire sealant. Background technique [0002] Tubeless tyres are light in weight, good in heat dissipation, and low in overall costs. They have been widely used in recent years, but they quickly leak air after being punctured by hard objects, which seriously affects the driving safety of cars. The tire sealant is coated on the surface of the inner liner of the tubeless tire. After the tire is punctured, the sealant quickly repairs the wound and realizes the self-healing function. Solid viscose such as isoprene rubber, silicone rubber, butene rubber has significant effects on tire puncture and leakage prevention, but the high cost of raw materials, flexibility, and aging resistance are difficult to meet the requirements; the development of thermoplastic elastomers and other rubber-plastic composite materials , Which opened up a new direction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J175/08C09J11/06C09J11/08C08G18/66C08G18/48C08G18/42C08G18/10C08G18/32C08G18/34
CPCC09J175/06C08G18/10C08G18/42C08G18/4825C09J11/06C09J11/08C09J175/08C08G18/3206C08G18/348C08L29/04C08K5/053
Inventor 朱德看
Owner 成都昂多生物技术有限责任公司
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