WO2023240670A1 - Matériau élastomère thermoplastique pour tapis de sol d'automobile et son procédé de préparation - Google Patents

Matériau élastomère thermoplastique pour tapis de sol d'automobile et son procédé de préparation Download PDF

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WO2023240670A1
WO2023240670A1 PCT/CN2022/100782 CN2022100782W WO2023240670A1 WO 2023240670 A1 WO2023240670 A1 WO 2023240670A1 CN 2022100782 W CN2022100782 W CN 2022100782W WO 2023240670 A1 WO2023240670 A1 WO 2023240670A1
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polyether polyol
component
pressure
molecular weight
thermoplastic elastomer
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PCT/CN2022/100782
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English (en)
Chinese (zh)
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宋伟杰
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宋伟杰
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
    • C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
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    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
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    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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    • C08K3/26—Carbonates; Bicarbonates
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
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    • C08J2203/08—Supercritical fluid
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    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/18—Binary blends of expanding agents
    • C08J2203/184—Binary blends of expanding agents of chemical foaming agent and physical blowing agent, e.g. azodicarbonamide and fluorocarbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • C08J2375/08—Polyurethanes from polyethers
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Definitions

  • the present invention relates to the technical field of automobile decoration, and in particular to a thermoplastic elastomer material used for automobile floor mats and a preparation method thereof.
  • Car floor mats are car interior decorations and are used to keep the interior of the car clean.
  • Car floor mats are car interior parts that integrate the five main functions of water absorption, dust collection, decontamination, sound insulation, and host blanket protection. Car floor mats absorb water, vacuum and decontaminate, which can effectively prevent the residual moisture and dirt on the soles from sliding between the clutch, brake, accelerator, etc., effectively avoiding safety hazards and reducing the possibility of the interior being contaminated and damaged.
  • the car floor mats currently on the market are generally plastic floor mats.
  • the wear resistance of the plastic sheets is not good, the grade is not high, and the glue has an odor, which affects the breathing environment.
  • the production of rubber foot pads requires high pressure, cumbersome processes, and long cycle times.
  • its color is not easy to adjust. At the same time, it is easy to harden in winter, which greatly reduces the comfort of use.
  • thermoplastic elastomer material polyurethane has the characteristics of light weight, good low-temperature flexibility, safety and high vibration absorption, and its application in automobile floor mat materials has attracted attention. How to apply polyurethane to car floor mats and prepare a car floor mat with good wear resistance, high resilience and good thermal insulation effect has excellent application prospects.
  • the purpose of the present invention is to propose a thermoplastic elastomer material for automobile floor mats and a preparation method thereof in order to solve the shortcomings existing in the prior art.
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 30-50 parts of toluene diisocyanate, 10-30 parts of diphenylmethane diisocyanate, 20-70 parts of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:1.
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2
  • a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: 20-40 parts of polyether polyol II, 1-5 parts of chain extender, 1-3 parts of cross-linking agent, 5-15 parts of filler, 0.1-1 part of catalyst, and 1-2 parts of pigment;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: 10-15 parts of water-loaded silicon carbide skeleton.
  • the water-loaded silicon carbide skeleton is prepared by the following steps: polystyrene microspheres are used as the skeleton, silicon carbide nanowires are coated on the surface of the polystyrene microspheres, and the polystyrene microspheres are removed by calcining in an air atmosphere, and then Loaded with water.
  • the specific preparation steps of the water-loaded silicon carbide skeleton are as follows: disperse the silicon carbide nanowires in anhydrous ethanol, ultrasonic dispersion under stirring, the ultrasonic frequency is 10-20 kHz, add polystyrene microspheres and continue ultrasonic treatment. , vacuum filtration, drying at 100-120°C for 2-4h, calcining in air atmosphere at 450-550°C for 10-20min, crushing and sieving, adding water and stirring evenly to obtain a water-loaded silicon carbide skeleton.
  • the mass ratio of silicon carbide nanowires, polystyrene microspheres, and water is 5-10:5-10:1-4.
  • the polystyrene microspheres have an average diameter of 10-50 ⁇ m.
  • the density of silicon carbide nanowires is 3-3.5g/cm 3 , the diameter is 0.1-0.5 ⁇ m, and the length is 10-50 ⁇ m.
  • the chain extender is at least one of lysine, 1,4-butanediol, 1,6-hexanediol, diethylene glycol, 1,4-butanediamine and ethylenediamine.
  • the cross-linking agent is at least one of glycerol, diethanolamine, triethanolamine, and trimethylolpropane.
  • the filler is nanometer calcium carbonate
  • the catalyst is an organic bismuth catalyst
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • component A and component B are mixed and added into a high-pressure reaction kettle, and the pressure is maintained in a high-pressure state for 10-20 minutes before the pressure is released.
  • the nucleation speed is fast and the number of foams is large, and then the pressure is increased. Effectively control the uniformity of the foam, and then perform pressure relief to promote bubble growth.
  • the resulting foam pore size is 10-150 ⁇ m, and the foam pore size is evenly distributed, thereby reducing the thermal conductivity of the product, improving the thermal insulation performance, and having good stability.
  • substances such as foam stabilizers. ;
  • component C polystyrene microspheres are used as templates, and the polystyrene microspheres are removed by calcining in a high-temperature air atmosphere to obtain a three-dimensional silicon carbide skeleton with a honeycomb hole structure, which has high adsorption and loading strength for water.
  • the water slowly overflows under high pressure and reacts with toluene diisocyanate to form gas.
  • Cooperate with the subsequent pressure relief, pressure increase, and pressure relief process to effectively avoid bubbles.
  • the phenomenon of pore merger and cell collapse, and the silicon carbide skeleton is evenly dispersed in the system to form a skeleton structure, which not only has excellent wear resistance, but also cooperates with the porous structure to effectively improve the resilience performance.
  • the present invention uses toluene diisocyanate and diphenylmethane diisocyanate as main materials and polyether polyol I to synthesize a prepolymer with an NCO content of 3%, and then sequentially mixes it with polyether polyol II and loaded water.
  • the water-loaded silicon carbide skeleton has extremely high bonding strength and effectively forms a wear-resistant skeleton. While increasing the wear-resistant strength, it also has excellent rebound performance.
  • the foot pads have the advantages of plastic and rubber materials. , good mechanical properties, resistant to permanent compression deformation and long service life.
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 30kg of toluene diisocyanate, 10kg of diphenylmethane diisocyanate, 20kg of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:1. ;
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2, and a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: polyether polyol II 20kg, lysine 0.2kg, 1,6-hexanediol 0.8kg, glycerin 0.3kg, diethanolamine 0.7kg, nano calcium carbonate 5kg, bismuth laurate 0.1kg, pigment 1kg ;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: 10kg of water-loaded silicon carbide skeleton.
  • the water-loaded silicon carbide skeleton is prepared by the following steps: 5kg of silicon carbide nanowires with a density of 3-3.5g/cm 3 , a diameter of 0.1-0.5 ⁇ m, and a length of 10-50 ⁇ m are dispersed in 20kg of absolute ethanol, and stirred Under ultrasonic dispersion for 10 minutes, the stirring speed is 50r/min, the ultrasonic frequency is 10kHz, add 5kg polystyrene microspheres with an average diameter of 10-50 ⁇ m, continue ultrasonic treatment for 1h, vacuum filtration, dry at 100°C for 2h, and add to the horse In a furnace, calcined in an air atmosphere at 450°C for 10 minutes, crushed, passed through an 80-mesh sieve, and 1 kg of water was added and stirred evenly to obtain a water-loaded silicon carbide skeleton.
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 50kg of toluene diisocyanate, 30kg of diphenylmethane diisocyanate, 70kg of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:2. ;
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2, and a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: polyether polyol II 40kg, diethylene glycol 4kg, 1,4-butanediamine 1kg, trimethylolpropane 3kg, nano calcium carbonate 15kg, bismuth laurate 1kg, pigment 2kg;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: 15kg of water-loaded silicon carbide skeleton.
  • the water-loaded silicon carbide skeleton is prepared by the following steps: 10kg of silicon carbide nanowires with a density of 3-3.5g/cm 3 , a diameter of 0.1-0.5 ⁇ m, and a length of 10-50 ⁇ m are dispersed in 40kg of absolute ethanol, and stirred Under ultrasonic dispersion for 20 minutes, the stirring speed is 100r/min, the ultrasonic frequency is 20kHz, add 10kg polystyrene microspheres with an average diameter of 10-50 ⁇ m, continue ultrasonic treatment for 2h, vacuum filtration, dry at 120°C for 4h, and add to the horse In a furnace, calcined in an air atmosphere at 550°C for 20 minutes, crushed, passed through a 100-mesh sieve, and 4kg of water was added and stirred evenly to obtain a water-loaded silicon carbide skeleton.
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 35kg of toluene diisocyanate, 25kg of diphenylmethane diisocyanate, 30kg of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:1.7 ;
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2, and a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: polyether polyol II 25kg, 1,4-butanediol 3.5kg, ethylenediamine 0.5kg, triethanolamine 1.5kg, nano calcium carbonate 8kg, bismuth laurate 0.8kg, pigment 1.3kg;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: 12kg of water-loaded silicon carbide skeleton.
  • the water-loaded silicon carbide skeleton is prepared by the following steps: 8kg of silicon carbide nanowires with a density of 3-3.5g/cm 3 , a diameter of 0.1-0.5 ⁇ m, and a length of 10-50 ⁇ m are dispersed in 25kg of absolute ethanol, and stirred Under ultrasonic dispersion for 18 minutes, the stirring speed is 60r/min, the ultrasonic frequency is 18kHz, add 6kg polystyrene microspheres with an average diameter of 10-50 ⁇ m, continue ultrasonic treatment for 100min, vacuum filtration, dry at 105°C for 3.5h, add to In a muffle furnace, calcined in an air atmosphere at 480°C for 18 minutes, crushed, passed through an 85-mesh sieve, and 3kg of water was added and stirred evenly to obtain a water-loaded silicon carbide skeleton.
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 45kg of toluene diisocyanate, 15kg of diphenylmethane diisocyanate, 60kg of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:1.3 ;
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2, and a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: polyether polyol II 35kg, lysine 1kg, 1,4-butanediol 1kg, glycerin 2.5kg, nano calcium carbonate 12kg, bismuth laurate 0.2kg, pigment 1.7kg;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: 14kg of water-loaded silicon carbide skeleton.
  • the water-loaded silicon carbide skeleton is prepared by the following steps: 6 kg of silicon carbide nanowires with a density of 3-3.5 g/cm 3 , a diameter of 0.1-0.5 ⁇ m, and a length of 10-50 ⁇ m are dispersed in 35 kg of absolute ethanol, and stirred Under ultrasonic dispersion for 12 minutes, the stirring speed is 80r/min, the ultrasonic frequency is 12kHz, add 8kg polystyrene microspheres with an average diameter of 10-50 ⁇ m, continue ultrasonic treatment for 80min, vacuum filtration, dry at 115°C for 2.5h, add to In a muffle furnace, calcined in an air atmosphere at 520°C for 12 minutes, crushed, passed through a 95-mesh sieve, and 2kg of water was added and stirred evenly to obtain a water-loaded silicon carbide skeleton.
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 40kg of toluene diisocyanate, 20kg of diphenylmethane diisocyanate, 45kg of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:1.5. ;
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2, and a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: polyether polyol II 30kg, diethylene glycol 3kg, diethanolamine 2kg, nano calcium carbonate 10kg, bismuth laurate 0.5kg, pigment 1.5kg;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: 12kg of water-loaded silicon carbide skeleton.
  • the water-loaded silicon carbide skeleton is prepared by the following steps: 7kg of silicon carbide nanowires with a density of 3-3.5g/cm 3 , a diameter of 0.1-0.5 ⁇ m, and a length of 10-50 ⁇ m are dispersed in 30kg of absolute ethanol, and stirred Under ultrasonic dispersion for 15 minutes, the stirring speed is 70r/min, the ultrasonic frequency is 15kHz, add 7kg polystyrene microspheres with an average diameter of 10-50 ⁇ m, continue ultrasonic treatment for 90min, vacuum filtration, dry at 110°C for 3h, and add to horse In a furnace, calcined in an air atmosphere at 500°C for 15 minutes, crushed, passed through a 90-mesh sieve, and 2.5kg of water was added and stirred evenly to obtain a water-loaded silicon carbide skeleton.
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 40kg of toluene diisocyanate, 20kg of diphenylmethane diisocyanate, 45kg of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:1.5. ;
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2, and a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: polyether polyol II 30kg, diethylene glycol 3kg, diethanolamine 2kg, nano calcium carbonate 10kg, bismuth laurate 0.5kg, pigment 1.5kg;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: water, where the added amount of water is the same as the water content in the water-loaded silicon carbide skeleton in Example 5.
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • thermoplastic elastomer material used for automobile floor mats including component A, component B, and component C;
  • Component A includes: 40kg of toluene diisocyanate, 20kg of diphenylmethane diisocyanate, 45kg of polyether polyol I;
  • Polyether polyol I includes: a polyether polyol with a molecular weight of 4000 and a polyether polyol with a molecular weight of 6000.
  • the weight ratio of the polyether polyol with a molecular weight of 4000 and the polyether polyol with a molecular weight of 6000 is 10:1.5. ;
  • a polyether polyol with a molecular weight of 4000 has a functionality of 2, and a polyether polyol with a molecular weight of 6000 has a functionality of 3;
  • Component B includes: polyether polyol II 30kg, diethylene glycol 3kg, diethanolamine 2kg, nano calcium carbonate 10kg, bismuth laurate 0.5kg, pigment 1.5kg;
  • the molecular weight of polyether polyol II is 1000 and its functionality is 3;
  • Component C includes: water-loaded silicon carbide skeleton.
  • the water-loaded silicon carbide skeleton is prepared by the following steps: 7kg of silicon carbide nanowires with a density of 3-3.5g/cm 3 , a diameter of 0.1-0.5 ⁇ m, and a length of 10-50 ⁇ m are dispersed in 30kg of absolute ethanol, and stirred Under ultrasonic dispersion for 15 minutes, the stirring speed is 70r/min, the ultrasonic frequency is 15kHz, add 7kg polystyrene microspheres with an average diameter of 10-50 ⁇ m, continue ultrasonic treatment for 90min, vacuum filtration, dry at 110°C for 3h, and add to horse In a furnace, calcined in an air atmosphere at 500°C for 15 minutes, crushed, passed through a 90-mesh sieve, and 2.5kg of water was added and stirred evenly to obtain a water-loaded silicon carbide skeleton.
  • thermoplastic elastomer material for automobile floor mats includes the following steps:
  • thermoplastic elastomer materials for automobile floor mats obtained in Example 5 and Comparative Examples 1-2 were subjected to comparative performance tests, as follows:
  • Example 5 Comparative example 1 Comparative example 2 Testing standards Density, g/cm 3 0.68 0.79 0.71 / Shore A hardness 52 66 57 GB/T 531-2008 Breaking strength, Mpa 5.5 4.0 4.9 GB/T 10654-2001 Elongation at break, % 793 603 684 GB/T 10654-2001
  • Example 5 Comparative example 1 Comparative example 2 Akron wear volume, cm 3 0.11 0.36 0.23 Impact rebound, % 57 44 51 Thermal conductivity, mW/(m ⁇ K) 15.8 18.8 17.9

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Est divulgué un matériau élastomère thermoplastique pour un tapis de sol d'automobile, lequel matériau comprend un composant A, un composant B et un composant C. Le composant A comprend, en poids, 30 à 50 parties de diisocyanate de toluène, 10 à 30 parties de diisocyanate de diphénylméthane et 20 à 70 parties d'un polyéther polyol I, qui comprend un polyéther polyol d'un poids moléculaire de 4000 et un polyéther polyol d'un poids moléculaire de 6000, le rapport pondéral entre le polyéther polyol d'un poids moléculaire de 4000 et le polyéther polyol d'un poids moléculaire de 6000 étant de 10/1-2, le degré de fonctionnalité du polyéther polyol d'un poids moléculaire de 4000 étant égal à 2 et le degré de fonctionnalité du polyéther polyol d'un poids moléculaire de 6000 étant égal à 3. Le composant B comprend, en poids, 20 à 40 parties d'un polyéther polyol II, 1 à 5 parties d'un allongeur de chaîne, 1 à 3 parties d'un agent de réticulation, 5 à 15 parties d'une charge, 0,1 à 1 partie d'un catalyseur et 1 à 2 parties d'un pigment, le degré de fonctionnalité du polyéther polyol II étant égal à 3. Le composant C comprend, en poids, 10 à 15 parties d'un squelette à base de carbure de silicium chargé d'eau.
PCT/CN2022/100782 2022-06-17 2022-06-23 Matériau élastomère thermoplastique pour tapis de sol d'automobile et son procédé de préparation WO2023240670A1 (fr)

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