A high-resilience thermoplastic elastomer foam material and preparation method thereof

Abstract

The invention discloses a high-resilience thermoplastic elastomer foam material and a preparation method thereof. The method comprises the following steps: ultrasonically dispersing a composite adsorbent in DMF and then mechanically stirring and dispersing the composite adsorbent with a thermoplastic polyurethane elastomer to uniformly disperse the composite adsorbent, then hot-pressing and cutting the composite adsorbent through a hot press, and placing the composite adsorbent in a high-pressure reactor to foam the composite adsorbent with supercritical carbon dioxide to obtain the high-resilience thermoplastic elastomer foam material. The foam material prepared by the invention can still maintain good resilience after multiple or long-term compression, has low compression permanent deformation rate and good comfort. By adding an adsorbent filler with an imidazole ring, the dissolution capacity of supercritical carbon dioxide in the thermoplastic elastomer is enhanced, the foam material has good pore structure, high resilience, high compression deformation capacity and is convenient for compression and transportation.

Description

Technical Field

[0001] The invention belongs to the technical field of foaming materials, relates to thermoplastic elastomer foaming materials, and specifically relates to a high-resilience thermoplastic elastomer foaming material and a preparation method thereof. Background Art

[0002] Thermoplastic elastomers are widely used in automotive interiors, shoe materials and other fields due to their excellent elasticity, recyclability and processing properties. The preparation of existing thermoplastic elastomer foam materials is mainly based on chemical foaming technology, which decomposes and produces gas during the heating process by adding chemical foaming agents, causing the raw materials to expand and form a cellular structure. However, during transportation, traditional thermoplastic elastomer foam materials often show obvious permanent compression deformation, especially after continuous compression or multiple compressions, that is, they cannot completely return to their original shape after unloading. High-strength thermoplastic elastomers have low compressible deformation, which is not convenient for compression and transportation, and the user experience is poor.

[0003] Patent CN115895097A discloses a foamed cross-linked thermoplastic elastomer material and its application. By setting the ratio of thermoplastic elastomer resin and plasticized rubber, a foamed cross-linked thermoplastic elastomer material with good mechanical properties is prepared. This solution improves the strength by preparing a foamed material with a smaller pore size, but the small-pore silicone rubber foam has limited deformation ability, poor resilience, high permanent compression deformation, and low tensile strength and elongation.

[0004] Patent CN111117215A discloses a thermoplastic elastomer foamed shoe material and a preparation method thereof, wherein two polyamide elastomers are compounded and a foamed material with good elasticity is prepared through supercritical fluid foaming technology, and the foamed material has low density, excellent resilience and excellent deformation resistance; however, the two elastomers in this scheme have a low degree of cross-linking, and are limited by the dispersion degree of the nucleating agent, resulting in a low improvement in the performance of the elastomer. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of how to make a thermoplastic elastomer foam material have both compression deformation capability and high resilience, and to provide a high resilience thermoplastic elastomer foam material and a preparation method thereof.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A method for preparing a high-resilience thermoplastic elastomer foam material comprises the following steps:

[0008] Step 1, ultrasonically dispersing the composite adsorbent in DMF for 1-2 hours, heating to 60-70° C. and stirring for 1-2 hours, then adding the thermoplastic polyurethane elastomer, mechanically stirring for 3-4 hours and ultrasonically dispersing for 1-2 hours, vacuum drying at 60-70° C. for 12-16 hours, and hot pressing with a hot press to obtain a modified thermoplastic polyurethane elastomer;

[0009] Step 2: Place the cut modified thermoplastic polyurethane elastomer in a high pressure reactor and introduce low pressure CO 2 After exhausting the air in the reactor, the temperature is raised to 60-80°C, and CO is introduced into the reactor. 2 , the saturation time is 3-4h, the saturation pressure is 11-12MPa, and then the pressure is quickly released to normal pressure to obtain a high-resilience thermoplastic elastomer foaming material;

[0010] The amount of the composite adsorbent used in step 1 is 1.2-1.5% of the thermoplastic polyurethane elastomer.

[0011] Further, the composite adsorbent is prepared by the following steps:

[0012] 2-4wt% stearic acid isopropanol solution is mixed with silica coated adsorbent and stirred for reaction for 1-2h, the filtered solid is washed with ethanol, vacuum dried and then mixed with polyetheretherketone powder in ethanol for 30-40min by ultrasonic vibration, and the composite adsorbent is obtained after rotary evaporation of the solvent.

[0013] Furthermore, the usage ratio of stearic acid isopropanol solution, silica coated adsorbent and polyetheretherketone powder is 30-40 mL: 8-10 g: 2-2.5 g.

[0014] Further, the silica coated adsorbent is prepared by the following steps:

[0015] In a beaker, the ethylenediamine grafted adsorbent is ultrasonically dispersed in ethanol, and then ammonia water is added, and then tetraethyl orthosilicate is dropped, and the reaction is stirred for 12-18 hours. After the reaction is completed, the silica-coated adsorbent is obtained by centrifugation, washing, and vacuum drying.

[0016] Furthermore, the usage ratio of ethylenediamine grafted adsorbent, ammonia water and tetraethyl orthosilicate is 7-8g: 500-600mL: 40-50mL: 8-10mL.

[0017] Further, the ethylenediamine grafted adsorbent is prepared by the following steps:

[0018] The adsorbent was ultrasonically dispersed in ethanol in a beaker, and then ethylenediamine was added and stirred for reaction for 18-24 hours. After filtering, washing and vacuum drying, the ethylenediamine grafted adsorbent was obtained.

[0019] Furthermore, the usage ratio of the adsorbent, ethanol and ethylenediamine is 7-8 g: 400-500 mL: 10-12 mL.

[0020] Further, the adsorbent is prepared by the following steps:

[0021] In a beaker, imidazole and benzimidazole were dissolved in DMF by stirring, and Zn(NO 3 ) 2 6H 2 O, stirred for 10-15 minutes, transferred to a polytetrafluoroethylene-lined autoclave, sealed and reacted at 125-135°C for 40-48 hours, centrifuged, washed, and vacuum dried at 60-70°C for 12-16 hours to obtain an adsorbent.

[0022] Further, imidazole, benzimidazole, DMF and Zn(NO 3 ) 2 6H 2 The dosage ratio of O is 12-15g:4-4.5g:150-200mL:6-7g.

[0023] Beneficial effects of the present invention:

[0024] (1) The foamed material prepared by the present invention can still maintain good resilience after multiple or long-term compression, has low compression permanent deformation rate and good comfort. By adding an adsorbent filler having an imidazole ring, the solubility of supercritical carbon dioxide in the thermoplastic elastomer is enhanced, the foamed material has a good pore structure, high resilience, high compression deformation capacity, and is easy to compress and transport.

[0025] (2) The preparation method of the present invention adopts physical foaming technology, which reduces pollution to the environment and meets the requirements of green production. By adding an adsorbent to the thermoplastic elastomer to adsorb more supercritical carbon dioxide, the foaming pore size around the adsorbent is increased, and the toughness and strength of the foaming material are enhanced by the silica and polyetheretherketone on the surface of the adsorbent, thereby improving the resilience of the foaming material. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1: A method for preparing a high-resilience thermoplastic elastomer foam material, comprising the following steps:

[0028] Step 1: Dissolve 12 g imidazole and 4 g benzimidazole in 150 mL DMF in a beaker, then add 6 g Zn(NO 3 ) 2 6H 2 O, stirred for 10 min, then transferred to a polytetrafluoroethylene-lined autoclave, sealed and reacted at 125 °C for 40 h, and the solid was separated by centrifugation, washed with DMF and dichloromethane in sequence, and then dried in vacuo at 60 °C for 12 h to obtain an adsorbent.

[0029] Step 2: Ultrasonic disperse 7 g of the adsorbent in 400 mL of ethanol in a beaker, then add 10 mL of ethylenediamine, stir and react for 18 h, filter and wash the solid twice with 50 wt% ethanol, and vacuum dry at 50° C. for 12 h to obtain an ethylenediamine-grafted adsorbent.

[0030] Step 3: Ultrasonic disperse 7 g of ethylenediamine grafted adsorbent in 500 mL of ethanol in a beaker, add 40 mL of ammonia water, and then drop 8 mL of tetraethyl orthosilicate. Stir and react for 12 hours. After the reaction is completed, separate the solid by centrifugation, wash twice with ethanol, and then dry it in a vacuum at 50°C for 12 hours to obtain a silica-coated adsorbent.

[0031] Step 4: Mix 30 mL of 2 wt% stearic acid isopropanol solution with 8 g of silica-coated adsorbent and stir to react for 1 h. Filter the solid, wash with ethanol, and vacuum dry it. Ultrasonic vibrate it with 2 g of polyetheretherketone powder in 40 mL of ethanol for 30 min. Rotate and evaporate the solvent to obtain a composite adsorbent.

[0032] Step 5: Ultrasonic disperse 80 mL of DMF and 9 g of the composite adsorbent in a beaker for 1 h, heat to 60°C and stir for 1 h, then add 600 g of thermoplastic polyurethane elastomer, mechanically stir for 3 h and ultrasonically disperse for 1 h, vacuum dry at 60°C for 12 h, and hot-press to obtain a modified thermoplastic polyurethane elastomer.

[0033] Step 6: Place the cut modified thermoplastic polyurethane elastomer in a high pressure reactor and introduce low pressure CO 2 After exhausting the air in the reactor, the temperature was raised to 60°C and CO was introduced into the reactor. 2 , the saturation time is 3h, the saturation pressure is 11MPa, and then the pressure is quickly released to normal pressure to obtain a high resilience thermoplastic elastomer foaming material.

[0034] Embodiment 2: A method for preparing a high-resilience thermoplastic elastomer foam material, comprising the following steps:

[0035] Step 1: Dissolve 13.5 g imidazole and 4.25 g benzimidazole in 175 mL DMF in a beaker, then add 6.5 g Zn(NO3 ) 2 6H 2 O, stirred for 12.5 min, then transferred to a polytetrafluoroethylene-lined autoclave, sealed and reacted at 130 °C for 44 h, and the solid was separated by centrifugation and washed with DMF and dichloromethane in sequence, and then dried in vacuo at 65 °C for 14 h to obtain an adsorbent.

[0036] Step 2: Ultrasonic disperse 7.5 g of the adsorbent in 450 mL of ethanol in a beaker, then add 11 mL of ethylenediamine, stir and react for 21 h, filter and wash the solid twice with 50 wt% ethanol, and vacuum dry at 55° C. for 14 h to obtain an ethylenediamine-grafted adsorbent.

[0037] Step 3: Ultrasonic disperse 7.5 g of ethylenediamine grafted adsorbent in 550 mL of ethanol in a beaker, add 45 mL of ammonia water, and then drop 9 mL of tetraethyl orthosilicate. Stir and react for 16 hours. After the reaction, separate the solid by centrifugation, wash twice with ethanol, and then dry it in a vacuum at 550°C for 14 hours to obtain a silica-coated adsorbent.

[0038] Step 4: Mix 35 mL of 3 wt% stearic acid isopropanol solution with 9 g of silica-coated adsorbent and stir to react for 1.5 h. Filter the solid, wash with ethanol, and vacuum dry it. Ultrasonic vibrate it with 2.25 g of polyetheretherketone powder in 45 mL of ethanol for 35 min. Rotate and evaporate the solvent to obtain a composite adsorbent.

[0039] Step 5: Ultrasonic disperse 90 mL of DMF and 11 g of the composite adsorbent in a beaker for 1.5 h, heat to 65 ° C and stir for 1.5 h, then add 800 g of thermoplastic polyurethane elastomer, mechanically stir for 3-4 h and ultrasonically disperse for 1.5 h, vacuum dry at 65 ° C for 14 h, and hot-press to obtain a modified thermoplastic polyurethane elastomer.

[0040] Step 6: Place the cut modified thermoplastic polyurethane elastomer in a high pressure reactor and introduce low pressure CO 2 After exhausting the air in the reactor, the temperature was raised to 70°C and CO was introduced into the reactor. 2 The saturation time is 3.5h, the saturation pressure is 11.5MPa, and then the pressure is quickly released to normal pressure to obtain a high resilience thermoplastic elastomer foaming material.

[0041] Embodiment 3: A method for preparing a high-resilience thermoplastic elastomer foam material, comprising the following steps:

[0042] Step 1: Dissolve 15 g imidazole and 4.5 g benzimidazole in 200 mL DMF in a beaker, then add 7 g Zn(NO 3 ) 2 6H 2O, stirred for 15 min, then transferred to a polytetrafluoroethylene-lined autoclave, sealed and reacted at 135 °C for 48 h, the solid was separated by centrifugation, washed with DMF and dichloromethane in sequence, and then dried in vacuo at 70 °C for 16 h to obtain an adsorbent.

[0043] Step 2: Ultrasonic disperse 8 g of the adsorbent in 500 mL of ethanol in a beaker, then add 12 mL of ethylenediamine, stir and react for 24 h, filter and wash the solid three times with 50 wt% ethanol, and vacuum dry at 60° C. for 16 h to obtain an ethylenediamine-grafted adsorbent.

[0044] Step 3: Ultrasonic disperse 8 g of ethylenediamine grafted adsorbent in 600 mL of ethanol in a beaker, add 50 mL of ammonia water, and then drop 10 mL of tetraethyl orthosilicate. Stir and react for 18 hours. After the reaction is completed, separate the solid by centrifugation, wash it three times with ethanol, and then dry it in a vacuum at 60°C for 16 hours to obtain a silica-coated adsorbent.

[0045] Step 4: Mix 40 mL of 4 wt% stearic acid isopropanol solution with 10 g of silica-coated adsorbent and stir to react for 2 h. Filter the solid, wash with ethanol, and vacuum dry it. Ultrasonic vibrate it with 2.5 g of polyetheretherketone powder in 50 mL of ethanol for 40 min. Rotate and evaporate the solvent to obtain a composite adsorbent.

[0046] Step 5: Ultrasonic disperse 100 mL of DMF and 15 g of the composite adsorbent in a beaker for 2 h, heat to 70 ° C and stir for 2 h, then add 1000 g of thermoplastic polyurethane elastomer, mechanically stir for 4 h and ultrasonically disperse for 2 h, vacuum dry at 70 ° C for 16 h, and hot-press mold with a hot press to obtain a modified thermoplastic polyurethane elastomer.

[0047] Step 6: Place the cut modified thermoplastic polyurethane elastomer in a high pressure reactor and introduce low pressure CO 2 After exhausting the air in the reactor, the temperature was raised to 80°C and CO was introduced into the reactor. 2 , the saturation time is 4h, the saturation pressure is 12MPa, and then the pressure is quickly released to normal pressure to obtain a high resilience thermoplastic elastomer foaming material.

[0048] Principle of the invention:

[0049] The imidazole ring in the adsorbent is a five-membered heterocyclic ring containing a nitrogen atom, which can interact with the carbon dioxide molecule. The nitrogen atom and the carbon atom on the imidazole ring can form hydrogen bonds or dipole-dipole interactions with the carbon dioxide molecule, and has the ability to adsorb carbon dioxide. In addition, the imidazole ring has a certain alkalinity and can react with the acidic gas carbon dioxide to form a relatively stable chemical bond or complex, which further enhances its adsorption effect and enables the adsorbent to adsorb more supercritical carbon dioxide. When the supercritical carbon dioxide is foamed, the thermoplastic polyurethane elastomer in which the adsorbent is located will produce more carbon dioxide gas, expand bubbles with larger pores, and form a large-pore-small-pore composite foaming structure of the foaming material. The large-pore bubbles can improve the compression deformation capacity of the foaming material and facilitate compression and transportation. The adsorbent filler and polyetheretherketone powder in the large-pore bubbles will enhance the toughness and strength of the large-pore bubble wall, thereby improving the resilience of the foaming material.

[0050] Ethylenediamine can interact with the nitrogen atom on the imidazole ring in the adsorbent. The imidazole ring and the amino group contained in the ethylenediamine molecule can form hydrogen bonds, so that ethylenediamine is grafted on the adsorbent. The silica-coated adsorbent is prepared by the hydrolysis-condensation reaction of tetraethyl orthosilicate and ethylenediamine. The silica particles have high dispersibility in thermoplastic polyurethane elastomer. The interaction between silica nanofillers can be reduced by modifying the silica surface with stearic acid, and the dispersibility of the silica-coated adsorbent and thermoplastic polyurethane elastomer can be increased. At the same time, after foaming, it can serve as a filler to reinforce the foaming material. For the continuous extrusion foaming of pure thermoplastic polyurethane elastomer, due to CO 2 The diffusion speed is fast, and the cell aggregation and collapse are very serious, resulting in the cell size being too large or even disappearing. Therefore, CO stabilized by polyetheretherketone 2 The desorption behavior increases the pore nucleation rate and reduces the gas escape rate. Polyetheretherketone is grafted onto the surface of the silica-coated adsorbent through stearic acid. Since the grafted chemical bonds are weak, supercritical carbon dioxide will attack the polyetheretherketone and stearic acid grafted groups, causing the groups to break. The carbon dioxide gas generated during pressure release and foaming will disperse the polyetheretherketone powder on the pore walls of the bubbles, thereby improving the toughness and strength of the pore walls.

[0051] Comparative Example 1: The difference from Example 1 is that the composite adsorbent is replaced by a silica-coated adsorbent.

[0052] Comparative Example 2: The difference from Example 1 is that the ethylenediamine adsorbent is replaced by an adsorbent.

[0053] Comparative Example 3: The difference from Example 1 is that the silica-coated adsorbent is replaced by an adsorbent.

[0054] The sources of some reagents in the embodiments and comparative examples are as follows:

[0055] Imidazole, benzimidazole, Zn(NO 3 ) 2 6H 2 O, ethylenediamine, tetraethyl orthosilicate, stearic acid and isopropyl alcohol were purchased from Sigma-Aldrich.

[0056] Thermoplastic polyurethane elastomer density 1.12g / cm 3 , Shore hardness 35D, purchased from Bayer Co., Ltd., Germany.

[0057] Polyetheretherketone powder, particle size 10 μm, was purchased from Dongguan Taotao Plastic Raw Materials Co., Ltd.

[0058] The foam materials prepared in Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to performance tests. The mechanical properties of the foam materials were tested using a CMT4204 microcomputer-controlled electronic universal testing machine. The foam materials were cut into rectangular strips of 50 mm × 5 mm. The mechanical properties of the samples were tested according to GB / T1040.2-2006. The tensile rate was 50 mm / min. Each sample was tested 5 times in parallel and the average value was taken. According to the compression permanent deformation, the compression permanent deformation rate of the foam material was tested according to the standard GB / T6669-2008. The resilience of the foam material was tested according to the standard GB / T6670-2008. The results are shown in Table 1:

[0059] Table 1

[0060] project Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Tensile strengthMpa 4.15 4.21 4.23 3.58 3.26 3.02 Compression set rate % 32 34 35 46 54 63 Rebound performance% 68 70 71 57 50 42

[0061] It can be seen from Table 1 that the tensile strength of the high resilience thermoplastic elastomer foam material prepared in the present invention reaches 4.23 MPa, has excellent physical strength, low compression permanent deformation, and high resilience performance, which means that the foam material prepared in the present invention has high resilience and good resistance to compression permanent deformation.

[0062] In Comparative Example 1, since the polyetheretherketone and the silica-coated adsorbent are not grafted and cross-linked, the gas release rate of supercritical carbon dioxide cannot be slowed down, and there is no polyetheretherketone to enhance the pore structure of the foamed material, so the tensile strength is low, the compression permanent deformation resistance is slightly poor, and the rebound performance is low; in Comparative Example 2, since the adsorbent is directly deposited on silica, the deposition of silica particles is uneven, the adsorbent has poor dispersibility in the thermoplastic polyurethane elastomer, and the pore structure formed by foaming is poor, resulting in poor tensile strength, compression permanent deformation and rebound performance; in Comparative Example 3, since the adsorbent is directly used for grafting and cross-linking with polyetheretherketone, the degree of cross-linking is low, the polyetheretherketone is easy to fall off, and the adsorbent has poor dispersibility in the polyurethane elastomer, resulting in low test performance of the foamed material.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a high resilience thermoplastic elastomer foam material, characterized in that: The steps include: Step 1, ultrasonically dispersing the composite adsorbent in DMF for 1-2 hours, heating to 60-70° C. and stirring for 1-2 hours, then adding the thermoplastic polyurethane elastomer, mechanically stirring for 3-4 hours and ultrasonically dispersing for 1-2 hours, vacuum drying at 60-70° C. for 12-16 hours, and hot pressing with a hot press to obtain a modified thermoplastic polyurethane elastomer; Step 2: placing the cut modified thermoplastic polyurethane elastomer in a high-pressure reactor and introducing low-pressure CO2 gas, exhausting the air in the reactor and heating it to 60-80°C, introducing CO2 into the reactor, the saturation time is 3-4h, the saturation pressure is 11-12MPa, and then quickly releasing the pressure to normal pressure to obtain a high-resilience thermoplastic elastomer foaming material; The amount of the composite adsorbent in step 1 is 1.2-1.5% of the thermoplastic polyurethane elastomer; The composite adsorbent is prepared by the following steps: A 2-4 wt% stearic acid isopropanol solution is mixed with a silica-coated adsorbent and stirred for 1-2 hours, the filtered solid is washed with ethanol, vacuum dried, and then mixed with polyetheretherketone powder in ethanol for 30-40 minutes by ultrasonic vibration, and the solvent is rotary evaporated to obtain a composite adsorbent; The silica coated adsorbent is prepared by the following steps: In a beaker, the ethylenediamine grafted adsorbent is ultrasonically dispersed in ethanol, and then ammonia water is added, and then tetraethyl orthosilicate is dropped, and the reaction is stirred for 12-18 hours. After the reaction is completed, the silica-coated adsorbent is obtained by centrifugation, washing, and vacuum drying; The ethylenediamine grafted adsorbent is prepared by the following steps: In a beaker, the adsorbent is ultrasonically dispersed in ethanol, and then ethylenediamine is added, and the reaction is stirred for 18-24 hours. After filtering, washing, and vacuum drying, the ethylenediamine-grafted adsorbent is obtained; The adsorbent is prepared by the following steps: In a beaker, imidazole and benzimidazole were stirred and dissolved in DMF, and Zn(NO3)2·6H2O was added. After stirring for 10-15 minutes, the mixture was transferred to a polytetrafluoroethylene-lined autoclave and sealed for reaction at 125-135°C for 40-48 hours. After centrifugation and washing, the mixture was vacuum dried at 60-70°C for 12-16 hours to obtain an adsorbent.

2. The method for preparing a high resilience thermoplastic elastomer foam material according to claim 1, characterized in that: The dosage ratio of the stearic acid isopropanol solution, the silicon dioxide coated adsorbent and the polyetheretherketone powder is 30-40 mL: 8-10 g: 2-2.5 g.

3. The method for preparing a high resilience thermoplastic elastomer foam material according to claim 1, characterized in that: The usage ratio of the ethylenediamine grafted adsorbent, ethanol, ammonia water and tetraethyl orthosilicate is 7-8g: 500-600mL: 40-50mL: 8-10mL.

4. The method for preparing a high resilience thermoplastic elastomer foam material according to claim 1, characterized in that: The usage ratio of the adsorbent, ethanol and ethylenediamine is 7-8 g: 400-500 mL: 10-12 mL.

5. The method for preparing a high resilience thermoplastic elastomer foam material according to claim 1, characterized in that: The usage ratio of imidazole, benzimidazole, DMF and Zn(NO3)2·6H2O is 12-15g:4-4.5g:150-200mL:6-7g.

6. A high resilience thermoplastic elastomer foam material, characterized in that: Prepared by the preparation method described in any one of claims 1 to 5.