Multi-purpose polyurethane material and synthesis method thereof

Abstract

The present application discloses a multi-purpose polyurethane material and a synthesis method thereof, relating to the technical field of polyurethane materials. The multi-purpose polyurethane raw materials include, by weight, 100 parts of polycarbonate diol, 15-40 parts of p-phenylene diisocyanate, 10-40 parts of hydroquinone dihydroxyethyl ether, 10-15 parts of trimethylolpropane, 2-14 parts of refined bamboo tar, 0.5-1.8 parts of a composite antioxidant, and 2.5-3.5 parts of a nano-montmorillonite core-supported catalyst. The polyurethane material provided by the present application has good environmental protection, hydrolysis resistance, heat resistance, and oxidation resistance, and also has excellent durability.

Description

Technical Field

[0001] The present application relates to the field of polyurethane material technology, and in particular to a multi-purpose polyurethane material and a synthesis method thereof. Background Art

[0002] Polyurethane is widely used in the oil drilling and production industry due to its exceptional properties, including high strength, wear resistance, good flexibility, and excellent processing properties. These characteristics make it an ideal material for manufacturing key components such as seals, pipe linings, and drill pipe casings. It can effectively withstand the complex working conditions encountered during oil drilling, such as high temperature, high pressure, mechanical wear, and chemical corrosion.

[0003] However, traditional polyurethane materials still face several unresolved challenges in practical applications, limiting their further development and application. First, while polyurethane materials excel in many areas, their durability still needs to be improved. During the long-term operation of oil drilling equipment, polyurethane materials are subjected to continuous mechanical stress, chemical attack, and environmental factors, leading to a gradual decline in their performance. For example, at high temperatures, polyurethane materials may undergo thermal degradation, breaking their molecular chains and reducing their mechanical strength. Furthermore, ultraviolet radiation and oxygen oxidation can accelerate the aging process of polyurethane materials. Second, the relatively limited functionality of traditional polyurethane materials makes them difficult to meet the increasingly diverse requirements of oil drilling applications. With the continuous advancement of oil drilling technology, the requirements for sealing materials are becoming increasingly stringent, requiring not only excellent sealing performance but also other specialized properties such as heat resistance and oxidation resistance. However, traditional polyurethane materials often perform less than ideally in these areas, failing to fully meet the diverse demands of complex operating conditions.

[0004] In summary, while polyurethane materials have broad application prospects in the oil drilling and production sector, their further development is limited by issues such as durability, limited functionality, and dependence on raw materials. To better meet the high-performance requirements of oil drilling and production equipment, developing multifunctional polyurethane materials and endowing them with more functional properties has become a key trend in current research and application. Summary of the Invention

[0005] In order to provide an environmentally friendly, high-performance multi-purpose polyurethane material and its synthesis method, solve the problems of poor environmental protection, hydrolysis resistance, heat resistance and oxidation resistance of traditional polyurethane materials, and give polyurethane materials excellent durability, the present application provides a multi-purpose polyurethane material and its synthesis method.

[0006] This application provides a multi-purpose polyurethane material, which adopts the following technical solution:

[0007] A multi-purpose polyurethane material comprises, by weight, 100 parts of polycarbonate diol, 15-40 parts of p-phenylene diisocyanate, 10-40 parts of hydroquinone dihydroxyethyl ether, 10-15 parts of trimethylolpropane, 2-14 parts of refined bamboo tar, 0.5-1.8 parts of a composite antioxidant, and 2.5-3.5 parts of a nano-montmorillonite core-supported catalyst.

[0008] Preferably, the preparation method of the refined bamboo tar comprises the following steps:

[0009] S1. The bamboo tar stock solution was added to a sodium hydroxide solution, stirred at 40-50 ℃ for 20-28h, and then centrifuged and filtered to obtain sodium hydroxide-treated bamboo tar;

[0010] S2. The sodium hydroxide-treated bamboo tar was added to a hydrochloric acid solution, stirred at 30-50 ℃ for 1-3h, and then centrifuged and filtered to obtain pretreated bamboo tar;

[0011] S3. Add a silane coupling agent to an ethanol-water solution and stir thoroughly to obtain a silane coupling agent hydrolyzate; add the pretreated bamboo tar to the silane coupling agent hydrolyzate, and stir the mixture in a water bath at 60-80°C for 1-2 hours. After the reaction is completed, the mixture is centrifuged, filtered, and vacuum-dried to obtain refined bamboo tar.

[0012] Preferably, the mass fraction of the sodium hydroxide solution is 11-18%; the mass fraction of the hydrochloric acid solution is 1.6-3.2%.

[0013] Preferably, the silane coupling agent is one of KH-550, KH-560, KH-570 or 3-isocyanatepropyltriethoxysilane.

[0014] Preferably, the composite antioxidant comprises antioxidant XH-245, triphenyl phosphite, and light stabilizer 770; the mass ratio of the antioxidant XH-245, triphenyl phosphite, and light stabilizer 770 is 0.2-1:0.1-0.4:0.1-0.4.

[0015] Preferably, the nano-montmorillonite core-supported catalyst raw materials include dibutyltin dilaurate and titanium dioxide pillared nano-montmorillonite, and the mass ratio of the two is 1:1-1.2.

[0016] Preferably, the titanium dioxide pillared nano-montmorillonite is prepared from the following raw materials in parts by weight: 1-2 parts of sodium-based nano-montmorillonite, 24-40 parts of ethanol, 10.2-15.3 parts of tetrabutyl titanate, and 100-150 parts of deionized water.

[0017] Preferably, the method for preparing the nano-montmorillonite core-supported catalyst comprises the following steps:

[0018] Adding dibutyltin dilaurate to titanium dioxide pillared nano-montmorillonite, and then placing it in a desiccator for 24-32 hours to obtain a nano-montmorillonite core-supported catalyst;

[0019] The preparation method of the titanium dioxide pillared nano-montmorillonite comprises the following steps:

[0020] 10.2-15.3 parts of tetrabutyl titanate are dripped into 8-14 parts of ethanol, and stirred at room temperature for 30-50 minutes to obtain a tetrabutyl titanate-ethanol solution; 1-2 parts of sodium-based nano-montmorillonite are dispersed in 16-26 parts of ethanol, stirred at room temperature for 1-2 hours, and then slowly dripped into the tetrabutyl titanate-ethanol solution and stirred for 6-8 hours to obtain a mixed solution; the mixed solution is dripped dropwise into 100-150 parts of deionized water, stirred for 10-20 minutes, aged at room temperature for 24-30 hours, centrifuged, washed, and dried to obtain titanium dioxide pillared nano-montmorillonite.

[0021] This application also provides a method for synthesizing a multi-purpose polyurethane material, which adopts the following technical solution:

[0022] A method for synthesizing a multi-purpose polyurethane material comprises the following steps:

[0023] S1. First, polycarbonate diol was added to the reactor, and then the reactor was kept at a temperature of 110-130 ° C and a vacuum degree of 0.06-0.07 MPa for 2-3 hours;

[0024] S2. After cooling to room temperature, p-phenylene diisocyanate was added to the reaction vessel and stirred under nitrogen at room temperature to mix uniformly, and then gradually heated to 80-90 ° C for 1.5-2h;

[0025] S3. After the above reaction is completed, hydroquinone dihydroxyethyl ether, trimethylolpropane, refined bamboo tar, nano-montmorillonite core-supported catalyst, and composite antioxidant are added to the reactor, stirred to mix evenly, and then poured into a mold for curing to obtain a multi-purpose polyurethane material.

[0026] Preferably, the curing includes a first stage and a second stage; the curing temperature of the first stage is 20-35°C, and the curing time is 24-48 hours; the curing temperature of the second stage is 75-85°C, and the curing time is 4-8 hours.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By adopting the above technical scheme, the present application uses polycarbonate diol and p-phenylene diisocyanate as the main raw materials, and uses hydroquinone dihydroxyethyl ether and trimethylolpropane as cross-linking agents and chain extenders to obtain a polyurethane material with excellent mechanical properties; refined bamboo tar is a product of natural bamboo pyrolysis, which is green and environmentally friendly. Introducing refined bamboo tar into the polyurethane material can effectively improve its durability; and adding a nano-montmorillonite core-supported catalyst, with titanium dioxide pillared nano-montmorillonite core-supported dibutyltin dilaurate, which is slowly released at room temperature and accelerated in a heated state, thereby effectively accelerating the curing of the polyurethane material and effectively improving the stability of the material; the antioxidant XH-245, 20-triphenyl phosphite, and light stabilizer 770 are combined as antioxidants, and through the synergistic effect of the three, the oxidation resistance and service life of the polyurethane material are significantly improved.

[0029] 2. By adopting the above technical solution, the present application uses sodium hydroxide solution and hydrochloric acid solution to treat bamboo tar stock solution in sequence, effectively removing impurities in the bamboo tar, and then further modifying the bamboo tar with a silane coupling agent, effectively improving the interfacial bonding strength between the bamboo tar and the polyurethane matrix, further improving the thermal stability and durability of the polyurethane material;

[0030] 3. By adopting the above technical solution, the titanium dioxide pillared nano-montmorillonite core of the present application carries dibutyltin dilaurate, which can not only slowly release the dibutyltin dilaurate catalyst to control the curing time of the polyurethane material, but the titanium dioxide pillared nano-montmorillonite itself can also be evenly dispersed in the polyurethane matrix to form a nanoscale reinforcing phase, absorb and disperse external impact energy, reduce the expansion of cracks, and maintain structural stability in high temperature environments, thereby effectively improving the tensile strength and thermal stability of the polyurethane material. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the embodiments.

[0032] The chemical reagents used in the preparation examples, embodiments and comparative examples provided by the present invention are all commercially available products, and their brands and manufacturers are as follows:

[0033] Polycarbonate diol, Guangdong Wengjiang Chemical Reagent Co., Ltd., molecular weight 2000, viscosity 1000-2000;

[0034] PPDI, Wuhan Huajiu Pharmaceutical Technology Co., Ltd.;

[0035] Antioxidant XH-245, Shanghai Yuanye Biotechnology Co., Ltd.;

[0036] Triphenyl phosphite, Shanghai MacLean Biochemical Technology Co., Ltd., T818852;

[0037] Light stabilizer 770, Hangzhou Jingyou Chemical Co., Ltd.

[0038] Preparation Example 1 Preparation of Refined Bamboo Tar

[0039] Preparation Example 1.1

[0040] S1. 10g of bamboo tar stock solution was added to 9g of 11% sodium hydroxide solution by mass, stirred at 45 ° C for 24h, centrifuged and filtered to obtain sodium hydroxide-treated bamboo tar;

[0041] S2. 10g of sodium hydroxide-treated bamboo tar was added to 9g of a 1.6% hydrochloric acid solution, stirred at 40 ° C for 2h, and then centrifuged and filtered to obtain pretreated bamboo tar;

[0042] S3. Add 0.2 g of silane coupling agent KH-550 to 20 g of ethanol-water solution (the mass ratio of ethanol to water is 6:1), stir and mix thoroughly to obtain a silane coupling agent hydrolyzate; add 10 g of pretreated bamboo tar to the silane coupling agent hydrolyzate, stir and react in a water bath at 60°C for 1 h. After the reaction, centrifuge, filter, and vacuum dry to obtain refined bamboo tar.

[0043] Preparation Example 1.2

[0044] S1. 10g of bamboo tar stock solution was added to 10g of a 15% sodium hydroxide solution by mass, stirred at 40 ° C for 20h, and then centrifuged and filtered to obtain sodium hydroxide-treated bamboo tar;

[0045] S2. 10g of sodium hydroxide-treated bamboo tar was added to 10g of a 2.4% hydrochloric acid solution, stirred at 30 ° C for 1h, and then centrifuged and filtered to obtain pretreated bamboo tar;

[0046] S3. Add 0.3 g of silane coupling agent KH-550 to 20 g of ethanol-water solution (the mass ratio of ethanol to water is 8:1), stir and mix thoroughly to obtain a silane coupling agent hydrolyzate; add 20 g of pretreated bamboo tar to the silane coupling agent hydrolyzate, stir and react in a 70°C water bath for 1.5 h. After the reaction, centrifuge, filter, and vacuum dry to obtain refined bamboo tar.

[0047] Preparation Example 1.3

[0048] S1. 10g of bamboo tar stock solution was added to 11g of 18% sodium hydroxide solution by mass, stirred at 50 ° C for 28h, and then centrifuged and filtered to obtain sodium hydroxide-treated bamboo tar;

[0049] S2. 10g of sodium hydroxide-treated bamboo tar was added to 11g of a 3.2% hydrochloric acid solution, stirred at 50 ° C for 2h, and then centrifuged and filtered to obtain pretreated bamboo tar;

[0050] S3. Add 0.4 g of silane coupling agent 3-isocyanatepropyltriethoxysilane to 20 g of ethanol aqueous solution (the mass ratio of ethanol to water is 10:1), stir and mix thoroughly to obtain a silane coupling agent hydrolyzate; add 40 g of pretreated bamboo tar to the silane coupling agent hydrolyzate, stir and react in a water bath at 60°C for 1 h, and after the reaction is completed, centrifuge, filter, and vacuum dry to obtain refined bamboo tar.

[0051] Preparation Example 2 Preparation of Nano-montmorillonite Core-supported Catalyst

[0052] Preparation Example 2.1

[0053] S1. 10.2 g of tetrabutyl titanate was dropped into 8 g of ethanol and stirred at room temperature for 30 min to obtain a tetrabutyl titanate-ethanol solution; 1 g of sodium-based nano-montmorillonite was dispersed in 16 g of ethanol, stirred at room temperature for 1 h, and then slowly added dropwise to the tetrabutyl titanate-ethanol solution and stirred for 6 h to obtain a mixed solution; the mixed solution was added dropwise to 100 g of deionized water, stirred for 10 min, aged at room temperature for 24 h, centrifuged, washed, and dried to obtain titanium dioxide pillared nano-montmorillonite;

[0054] S2. Add 1 g of dibutyltin dilaurate to 1 g of titanium dioxide-pillared nano-montmorillonite, and then place it in a desiccator for 24 hours to obtain a nano-montmorillonite core-supported catalyst.

[0055] Preparation Example 2.2

[0056] S1. 12.75 g of tetrabutyl titanate was dropped into 11 g of ethanol and stirred at room temperature for 40 min to obtain a tetrabutyl titanate-ethanol solution; 1.5 g of sodium-based nano-montmorillonite was dispersed in 21 g of ethanol, stirred at room temperature for 1.5 h, and then slowly added dropwise to the tetrabutyl titanate-ethanol solution and stirred for 7 h to obtain a mixed solution; the mixed solution was dropwise added into 125 g of deionized water, stirred for 15 min, aged at room temperature for 27 h, centrifuged, washed, and dried to obtain titanium dioxide pillared nano-montmorillonite;

[0057] S2. Add 1 g of dibutyltin dilaurate to 1 g of titanium dioxide-pillared nano-montmorillonite, and then place it in a desiccator for 24 hours to obtain a nano-montmorillonite core-supported catalyst.

[0058] Preparation Example 2.3

[0059] S1. 15.3 g of tetrabutyl titanate was dropped into 14 g of ethanol and stirred at room temperature for 50 min to obtain a tetrabutyl titanate-ethanol solution; 2 g of sodium-based nano-montmorillonite was dispersed in 26 g of ethanol, stirred at room temperature for 2 h, and then slowly added dropwise to the tetrabutyl titanate-ethanol solution and stirred for 8 h to obtain a mixed solution; the mixed solution was dropwise added into 150 g of deionized water, stirred for 20 min, aged at room temperature for 30 h, centrifuged, washed, and dried to obtain titanium dioxide pillared nano-montmorillonite;

[0060] S2. Add 1 g of dibutyltin dilaurate to 1.2 g of titanium dioxide-pillared nano-montmorillonite, and then place it in a desiccator for 32 hours to obtain a nano-montmorillonite core-supported catalyst.

[0061] Example 1

[0062] S1. 100 g of polycarbonate diol was added to the reactor, and then the reactor was kept at a temperature of 110 ° C and a vacuum of 0.06 MPa for 2 h;

[0063] S2. After cooling to room temperature, 15 g of p-phenylene diisocyanate PPDI was added to the reactor and stirred under nitrogen at room temperature to mix uniformly, and then gradually heated to 80 ° C for 1.5 h;

[0064] S3. After the above reaction is completed, 10g of hydroquinone dihydroxyethyl ether, 10g of trimethylolpropane, 2g of refined bamboo tar obtained by Preparation Example 1.1, 2.5g of nano-montmorillonite core-supported catalyst obtained by Preparation Example 2.1, and 0.5g of composite antioxidant are added to the reactor, stirred to mix evenly, and then poured into a mold for curing. The first stage curing temperature is 20°C and the curing time is 48h; the second stage curing temperature is 75°C and the curing time is 8h; a multi-purpose polyurethane material is obtained; the composite antioxidant used in this embodiment is antioxidant XH-245, triphenyl phosphite, and light stabilizer 770, with a mass ratio of 0.2:0.1:0.1.

[0065] Example 2

[0066] S1. 100 g of polycarbonate diol was added to the reactor, and then the reactor was left at a temperature of 120 ° C and a vacuum of 0.065 MPa for 2.5 h.

[0067] S2. After cooling to room temperature, 27.5 g of p-phenylene diisocyanate PPDI was added to the reactor and stirred under nitrogen at room temperature to mix uniformly, and then gradually heated to 85 ° C for 1.75 h;

[0068] S3. After the above reaction is completed, 25g of hydroquinone dihydroxyethyl ether, 12.5g of trimethylolpropane, 2g of refined bamboo tar obtained by Preparation Example 1.1, 2.5g of nano-montmorillonite core-supported catalyst obtained by Preparation Example 2.1, and 1.1g of composite antioxidant are added to the reactor, stirred to mix evenly, and then poured into a mold for curing. The first stage curing temperature is 27.5°C and the curing time is 36h; the second stage curing temperature is 80°C and the curing time is 6h; a multi-purpose polyurethane material is obtained; the composite antioxidant used in this embodiment is antioxidant XH-245, triphenyl phosphite, and light stabilizer 770, with a mass ratio of 0.6:0.25:0.25.

[0069] Example 3

[0070] S1. 100 g of polycarbonate diol was added to the reactor, and then the reactor was kept at a temperature of 130 ° C and a vacuum of 0.07 MPa for 3 h;

[0071] S2. After cooling to room temperature, 40 g of p-phenylene diisocyanate PPDI was added to the reactor and stirred under nitrogen at room temperature to mix uniformly, and then gradually heated to 90 ° C for 2 h;

[0072] S3. After the above reaction is completed, 40g of hydroquinone dihydroxyethyl ether, 15g of trimethylolpropane, 2g of refined bamboo tar prepared in Preparation Example 1.1, 2.5g of nano-montmorillonite core-supported catalyst prepared in Preparation Example 2.1, and 1.8g of composite antioxidant are added to the reactor, stirred to mix evenly, and then poured into a mold for curing. The first stage curing temperature is 35°C and the curing time is 24h; the second stage curing temperature is 80°C and the curing time is 4h; a multi-purpose polyurethane material is obtained; the composite antioxidant used in this embodiment is antioxidant XH-245, triphenyl phosphite, and light stabilizer 770, with a mass ratio of 1:0.4:0.4.

[0073] Example 4

[0074] The difference between Example 4 and Example 1 is that the refined bamboo tar used in Example 4 comes from Preparation Example 1.1, with a mass of 8 g.

[0075] Example 5

[0076] The difference between Example 5 and Example 1 is that the refined bamboo tar used in Example 5 comes from Preparation Example 1.1, with a mass of 14 g.

[0077] Example 6

[0078] The difference between Example 6 and Example 1 is that the refined bamboo tar used in Example 6 comes from Preparation Example 1.2, with a mass of 2 g.

[0079] Example 7

[0080] The difference between Example 7 and Example 1 is that the refined bamboo tar used in Example 7 comes from Preparation Example 1.3, with a mass of 2 g.

[0081] Example 8

[0082] The difference between Example 8 and Example 1 is that the nano-montmorillonite core-supported catalyst used in Example 8 comes from Preparation Example 2.1, with a mass of 3 g.

[0083] Example 9

[0084] The difference between Example 9 and Example 1 is that the nano-montmorillonite core-supported catalyst used in Example 9 comes from Preparation Example 2.1, with a mass of 3.5 g.

[0085] Example 10

[0086] The difference between Example 10 and Example 1 is that the nano-montmorillonite core-supported catalyst used in Example 10 comes from Preparation Example 2.2, with a mass of 2.5 g.

[0087] Example 11

[0088] The difference between Example 11 and Example 1 is that the nano-montmorillonite core-supported catalyst used in Example 11 comes from Preparation Example 2.3, with a mass of 2.5 g.

[0089] Comparative Example 1

[0090] The difference between Comparative Example 1 and Example 1 is that the refined bamboo tar used in Comparative Example 1 comes from Preparation Example 1.1, with a mass of 0.5 g.

[0091] Comparative Example 2

[0092] The difference between Comparative Example 2 and Example 1 is that the refined bamboo tar used in Comparative Example 2 comes from Preparation Example 1.1, with a mass of 18 g.

[0093] Comparative Example 3

[0094] The difference between Comparative Example 3 and Example 1 is that refined bamboo tar is not added in Comparative Example 3.

[0095] Comparative Example 4

[0096] The difference between Comparative Example 4 and Example 1 is that the nano-montmorillonite core-supported catalyst used in Comparative Example 4 comes from Preparation Example 2.1, with a mass of 1.5 g.

[0097] Comparative Example 5

[0098] The difference between Comparative Example 5 and Example 1 is that the nano-montmorillonite core-supported catalyst used in Comparative Example 5 comes from Preparation Example 2.1, with a mass of 4.5 g.

[0099] Comparative Example 6

[0100] The difference between Comparative Example 6 and Example 1 is that in Comparative Example 6, no nano-montmorillonite core-supported catalyst is added.

[0101] Performance testing

[0102] 1. With reference to GB / T 1040.1-2018 “Determination of tensile properties of plastics Part 1: General principles”, the tensile strength and elongation at break of the polyurethane materials obtained in Examples 1-11 and Comparative Examples 1-6 were tested, and the results are shown in Table 1.

[0103] 2. The polyurethane materials obtained in Examples 1-11 and Comparative Examples 1-6 were treated at 100° C. for 72 h, and then their tensile strength was tested according to the above method, and their tensile strength retention was calculated. The results are shown in Table 1.

[0104] Tensile strength retention rate = (tensile strength after heat treatment / original tensile strength) × 100%.

[0105] The specific test results are as follows:

[0106] Table 1 Performance test results

[0107]

[0108] It can be seen from the test results in Table 1 that the tensile strength of the polyurethane material provided in this application can reach 49 MPa, the elongation at break can reach 715%, and after treatment at 100°C for 72 hours, the tensile strength retention rate can reach 90.5%, indicating that the polyurethane material provided in this application has good mechanical properties and excellent aging resistance.

[0109] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A multi-purpose polyurethane material, characterized in that: The raw materials include, by weight, 100 parts of polycarbonate diol, 15-40 parts of p-phenylene diisocyanate, 10-40 parts of hydroquinone dihydroxyethyl ether, 10-15 parts of trimethylolpropane, 2-14 parts of refined bamboo tar, 0.5-1.8 parts of composite antioxidant, and 2.5-3.5 parts of nano-montmorillonite core-supported catalyst; The preparation method of the refined bamboo tar comprises the following steps: S1. The bamboo tar stock solution was added to a sodium hydroxide solution, stirred at 40-50 ℃ for 20-28h, and then centrifuged and filtered to obtain sodium hydroxide-treated bamboo tar; S2. The sodium hydroxide-treated bamboo tar was added to a hydrochloric acid solution, stirred at 30-50 ℃ for 1-3h, and then centrifuged and filtered to obtain pretreated bamboo tar; S3. The silane coupling agent was added to an aqueous ethanol solution and stirred to obtain a silane coupling agent hydrolyzate; the pretreated bamboo tar was added to the silane coupling agent hydrolyzate, and the reaction was stirred in a water bath at 60-80 ° C for 1-2h. After the reaction, the mixture was centrifuged, filtered, and vacuum-dried to obtain refined bamboo tar; The raw materials of the nano-montmorillonite core-supported catalyst include dibutyltin dilaurate and titanium dioxide pillared nano-montmorillonite, and the mass ratio of the two is 1:1-1.2; The titanium dioxide pillared nano-montmorillonite is prepared from the following raw materials in parts by weight: 1-2 parts of sodium-based nano-montmorillonite, 24-40 parts of ethanol, 10.2-15.3 parts of tetrabutyl titanate, and 100-150 parts of deionized water.

2. The multi-purpose polyurethane material according to claim 1, characterized in that: The mass fraction of the sodium hydroxide solution is 11-18%; the mass fraction of the hydrochloric acid solution is 1.6-3.2%.

3. The multi-purpose polyurethane material according to claim 1, characterized in that: The silane coupling agent is one of KH-550, KH-560, KH-570 or 3-isocyanatepropyltriethoxysilane.

4. The multi-purpose polyurethane material according to claim 1, characterized in that: The composite antioxidant comprises antioxidant XH-245, triphenyl phosphite and light stabilizer 770; the mass ratio of the antioxidant XH-245, triphenyl phosphite and light stabilizer 770 is 0.2-1:0.1-0.4:0.1-0.

4.

5. The multi-purpose polyurethane material according to claim 1, characterized in that: The preparation method of the nano-montmorillonite core-supported catalyst comprises the following steps: Adding dibutyltin dilaurate to titanium dioxide pillared nano-montmorillonite, and then placing it in a desiccator for 24-32 hours to obtain a nano-montmorillonite core-supported catalyst; The preparation method of the titanium dioxide pillared nano-montmorillonite comprises the following steps: 10.2-15.3 parts of tetrabutyl titanate are dripped into 8-14 parts of ethanol, and stirred at room temperature for 30-50 minutes to obtain a tetrabutyl titanate-ethanol solution; 1-2 parts of sodium-based nano-montmorillonite are dispersed in 16-26 parts of ethanol, stirred at room temperature for 1-2 hours, and then slowly dripped into the tetrabutyl titanate-ethanol solution and stirred for 6-8 hours to obtain a mixed solution; the mixed solution is dripped dropwise into 100-150 parts of deionized water, stirred for 10-20 minutes, aged at room temperature for 24-30 hours, centrifuged, washed, and dried to obtain titanium dioxide pillared nano-montmorillonite.

6. A method for synthesizing a multi-purpose polyurethane material according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. First, polycarbonate diol was added to the reactor, and then the reactor was kept at a temperature of 110-130 ° C and a vacuum degree of 0.06-0.07 MPa for 2-3 hours; S2. After cooling to room temperature, p-phenylene diisocyanate was added to the reaction vessel and stirred under nitrogen at room temperature to mix uniformly, and then gradually heated to 80-90 ° C for 1.5-2h; S3. After the above reaction is completed, hydroquinone dihydroxyethyl ether, trimethylolpropane, refined bamboo tar, nano-montmorillonite core-supported catalyst, and composite antioxidant are added to the reactor, stirred to mix evenly, and then poured into a mold for curing to obtain a multi-purpose polyurethane material.

7. The method for synthesizing a multi-purpose polyurethane material according to claim 6, characterized in that: The curing includes a first stage and a second stage; the curing temperature of the first stage is 20-35° C. and the curing time is 24-48 hours; the curing temperature of the second stage is 75-85° C. and the curing time is 4-8 hours.

Images