High-resilience flexible sofa composite fabric and production method thereof

Abstract

The invention relates to the technical field of fibers, in particular to a high-resilience flexible sofa composite fabric and a production method thereof. The production method comprises the following steps: S1, mixing hyperbranched polyethyleneimine, 1, 3-diazido adamantane and dimethyl sulfoxide, carrying out primary reaction, and carrying out centrifugal dialysis purification to obtain adamantane modified hyperbranched polyethyleneimine; s2, mixing sulfydryl-beta-cyclodextrin, the adamantane modified hyperbranched polyethyleneimine and triethylamine, and carrying out a secondary reaction, so as to obtain adamantane modified cyclodextrin; s3, mixing adamantane modified cyclodextrin, a polyurethane prepolymer, dibutyltin dilaurate and anhydrous dichloromethane, carrying out a reaction for three times, and filtering and defoaming to obtain a spinning solution; s4, performing a dry spinning process on the spinning solution to obtain high-resilience flexible fibers, and treating the high-resilience flexible fibers to obtain the high-resilience flexible sofa composite fabric. The composite fabric provided by the invention has high elasticity, high strength and excellent heat resistance.

Description

Technical Field

[0001] This invention belongs to the field of fiber technology, and in particular relates to a high-resilience flexible sofa composite fabric and its production method. Background Technology

[0002] Fabric is the material used to make clothing. As one of the three essential elements of clothing, fabric not only interprets the style and characteristics of clothing but also directly influences the color and shape of the garment. Functional fabrics refer to fabrics with specific properties and uses, such as waterproofing, windproofing, breathability, moisture permeability, warmth retention, oil resistance, easy stain removal, antibacterial and deodorizing properties, UV protection, antistatic properties, radiation protection, flame retardancy, high temperature resistance, and acid and alkali resistance. Functional fabrics on the market are mainly used in clothing, particularly in outdoor sportswear and high-end casual wear.

[0003] Polyurethane consists of soft and hard segments. Soft segments are generally composed of oligomeric polyols (such as polyether polyols and polyester polyols), possessing a low glass transition temperature, imparting elasticity and flexibility to the material, and allowing the molecular chains to rotate and extend freely. Hard segments, on the other hand, are formed by the reaction of diisocyanates and small-molecule chain extenders (such as diamines and diols), possessing a high glass transition temperature and melting point, and exhibiting greater rigidity in their molecular chains. When the molecular weight or content of soft segments decreases, the number of movable flexible segments is insufficient, leading to a decline in fabric elasticity. During production, if the degree of polymerization of the polyether polyol does not reach the expected level, its molecular chains will be shorter, weakening the elastic contribution of the soft segments. Furthermore, an excessively high content of hard segments increases the number of rigid regions between molecular chains, restricting the movement of the soft segment molecular chains, hindering the elastic recovery of the soft segments, and consequently resulting in insufficient overall fabric elasticity.

[0004] For example, CN106592010A discloses a method for preparing polyurethane elastic fibers and their application. The preparation method includes the following steps: (1) uniformly dissolving thermoplastic polyurethane in DMAC to obtain a thermoplastic polyurethane solution; (2) reacting a polymeric polyol with diisocyanate to obtain an isocyanate-terminated prepolymer solution; (3) mixing the thermoplastic polyurethane solution with the prepolymer solution and simultaneously adding trimethylolpropane, reacting fully to obtain a polyurethane stock solution; (4) adding alkyl phosphate salt and polyamidine to the above polyurethane stock solution, stirring and mixing thoroughly to obtain a spinning stock solution; and (5) preparing polyurethane elastic fibers from the above spinning stock solution using dry spinning technology. However, in the polyurethane synthesis reaction, trimethylolpropane contains three hydroxyl functional groups, which can react with diisocyanate to play a chain extension role, forming a relatively rigid hard segment structure. When the amount of trimethylolpropane increases, the content of hard segments in the polyurethane molecular chain will increase. The rigid segments have a high glass transition temperature and crystallinity, and their molecular chain segments are relatively rigid, limiting their mobility. Too many rigid segments will restrict the free extension and retraction of the soft segment molecular chains, thereby reducing the elasticity of polyurethane fabrics.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a high-resilience flexible sofa composite fabric and its production method. The composite fabric provided by this invention has high elasticity, high strength, and excellent heat resistance.

[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, embodiments of the present invention provide a method for producing a high-resilience flexible sofa composite fabric, comprising the following steps: S1, hyperbranched polyethyleneimine, 1,3-diazidoadaramane, and dimethyl sulfoxide were mixed and reacted once. After purification by centrifugation and dialysis, adamantane-modified hyperbranched polyethyleneimine was obtained. S2, a secondary reaction is carried out by mixing mercapto-β-cyclodextrin, adamantane-modified hyperbranched polyethyleneimine, and triethylamine to obtain adamantane-modified cyclodextrin; S3 involves mixing adamantane-modified cyclodextrin, polyurethane prepolymer, dibutyltin dilaurate, and anhydrous dichloromethane for three reactions. After the reaction is completed, the mixture is filtered and degassed to obtain the spinning solution. S4, high-resilience flexible fiber is obtained by dry spinning of spinning solution, the high-resilience flexible fiber is woven to form a blank, and the blank is post-treated to obtain high-resilience flexible sofa composite fabric.

[0008] The adamantane-modified cyclodextrin provided by this invention forms a dynamic supramolecular network structure with the polyurethane matrix through host-guest interactions, exhibiting a synergistic effect in improving the strength and elasticity of the fabric. On the one hand, the cavities of the cyclodextrin and the hydrophobic groups of the adamantane form physical crosslinking points through inclusion, effectively restricting the slippage of the polyurethane molecular chains, thereby significantly enhancing the tensile strength and abrasion resistance of the material. On the other hand, this dynamic crosslinking network allows the molecular chains to extend and retract under stress, giving the material high resilience. At the same time, the rigid cyclic structure of β-cyclodextrin can disperse stress, reduce local deformation, and further optimize the elastic recovery rate. In addition, the adamantane-cyclodextrin complex can also bind to the soft segments of polyurethane through hydrogen bonds, improving tear resistance while maintaining the flexibility of the material, achieving a dual breakthrough in strength and elasticity.

[0009] Furthermore, the composite fabric provided by this invention exhibits excellent heat resistance, primarily due to the synergistic effect of adamantane-modified cyclodextrin and polyurethane to improve thermal shrinkage. Specifically, β-cyclodextrin enhances the inter-chain bonding of polyurethane through cross-linking, and its cavity structure strengthens the hydrogen bond network, inhibiting molecular chain slippage at high temperatures, thereby improving thermal stability and reducing shrinkage deformation. Secondly, the rigid hydrophobic structure of adamantane embeds into the cyclodextrin cavity to form dynamic supramolecular cross-linking points, which restrict the thermal movement of the polyurethane soft segments through host-guest interactions during heating, further suppressing heat-induced shrinkage. Simultaneously, the cyclodextrin-modified polyurethane exhibits enhanced micro-region order in the hard segments, while the introduction of adamantane optimizes the phase separation structure, enabling the material to maintain morphological stability at high temperatures. This dual modification strategy, through the synergistic effect of enhanced physical cross-linking and rigid structure, achieves improved thermal shrinkage.

[0010] In a preferred embodiment, in step S1, the mass ratio of the hyperbranched polyethyleneimine, 1,3-diazidoadaramane, and dimethyl sulfoxide is 1:(1-2):(10-50).

[0011] In a preferred embodiment, in step S1, the hyperbranched polyethyleneimine has a molecular weight of 20,000-50,000.

[0012] In a preferred embodiment, in step S1, the conditions for the primary reaction are: microwave heating to 60-100°C, reaction time 2-4 hours, and microwave power 200-400W.

[0013] In a preferred embodiment, in step S1, the molecular weight cutoff for dialysis is 10 kDa.

[0014] In a preferred embodiment, in step S2, the mass ratio of the mercapto-β-cyclodextrin, adamantane-modified hyperbranched polyethyleneimine, and triethylamine is 1:(1-2):(30-100).

[0015] In a preferred embodiment, in step S2, the conditions for the secondary reaction are: under a nitrogen atmosphere, the reaction is carried out at 30-60°C for 8-16 hours.

[0016] In a preferred embodiment, the preparation method of the polyurethane prepolymer in step S3 is as follows: Polytetrahydrofuran ether diol and isocyanate were subjected to a hydrothermal reaction, followed by the addition of diethyltoluene diamine and dimethyl hydroxy silicone oil, and the mixture was stirred to obtain a polyurethane prepolymer.

[0017] This invention effectively improves the elasticity, strength, and heat shrinkage of composite fabrics by introducing dimethyl hydroxy silicone oil into the formation of polyurethane prepolymer.

[0018] This is mainly achieved by introducing dimethyl hydroxy silicone oil into the preparation of polyurethane prepolymer. Its hydroxyl groups can react with isocyanate groups to form flexible siloxane segments, which significantly improves the flexibility and heat resistance of polyurethane molecular chains. At the same time, the hydrophobic properties of silicone oil enhance the fabric's resistance to hydrolysis. Meanwhile, adamantane-modified cyclodextrin is embedded into the polyurethane network through host-guest inclusion. On the one hand, the rigid structure of adamantane serves as a physical crosslinking point to restrict molecular chain slippage and improve material strength. On the other hand, the cavities of cyclodextrin dynamically adapt to the microphase separation of the soft and hard segments of polyurethane, synergistically achieving high resilience with the flexibility of silicone oil. In terms of heat shrinkage performance, the high thermal stability of siloxane segments and the topological constraint effect of the cyclodextrin-adamantane complex jointly inhibit the shrinkage and deformation of molecular chains at high temperatures, reducing the heat shrinkage rate of the modified fabric and forming a synergistic reinforcement system that combines rigidity and flexibility.

[0019] In a preferred embodiment, the hydrothermal reaction is carried out under a nitrogen atmosphere at 70-100°C for 2-6 hours.

[0020] In a preferred embodiment, the mass ratio of the polytetrahydrofuran ether diol, isocyanate, diethyltoluene diamine, and dimethylhydroxysilicone oil is 1:(1-2):(0.5-0.8):(0.1-0.5).

[0021] In a preferred embodiment, the molecular weight of the dimethyl hydroxy silicone oil is 1000-20000.

[0022] In a preferred embodiment, in step S3, the mass ratio of the adamantane-modified cyclodextrin, polyurethane prepolymer, dibutyltin dilaurate, and anhydrous dichloromethane is 1:(1-2):(0.05-0.1):(50-100).

[0023] In a preferred embodiment, in step S3, the conditions for the three reactions are: under a nitrogen atmosphere, the reaction is carried out at 40-70°C for 2-5 hours.

[0024] Secondly, embodiments of the present invention provide a high-resilience flexible sofa composite fabric obtained by the production method of the high-resilience flexible sofa composite fabric described above.

[0025] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: 1. The adamantane-modified cyclodextrin provided by this invention forms a dynamic supramolecular network structure with the polyurethane matrix through host-guest interactions, exhibiting a synergistic effect in improving the strength and elasticity of the fabric: On the one hand, the cavities of the cyclodextrin and the hydrophobic groups of the adamantane form physical crosslinking points through inclusion, effectively restricting the slippage of the polyurethane molecular chains, thereby significantly enhancing the tensile strength and abrasion resistance of the material; on the other hand, this dynamic crosslinking network allows the molecular chains to extend and retract under stress, giving the material high resilience, while the rigid cyclic structure of β-cyclodextrin can disperse stress, reduce local deformation, and further optimize the elastic recovery rate. In addition, the adamantane-cyclodextrin complex can also bind to the soft segments of polyurethane through hydrogen bonds, improving tear resistance while maintaining the flexibility of the material, achieving a dual breakthrough in strength and elasticity.

[0026] 2. The composite fabric provided by this invention exhibits excellent heat resistance, primarily due to the synergistic effect of adamantane-modified cyclodextrin and polyurethane to improve heat shrinkage. Specifically, β-cyclodextrin enhances the inter-chain bonding of polyurethane through cross-linking, and its cavity structure strengthens the hydrogen bond network, inhibiting molecular chain slippage at high temperatures, thereby improving thermal stability and reducing shrinkage deformation. Secondly, the rigid hydrophobic structure of adamantane embeds into the cyclodextrin cavity to form dynamic supramolecular cross-linking points, which restrict the thermal movement of the polyurethane soft segments through host-guest interactions during heating, further suppressing heat-induced shrinkage. Simultaneously, the cyclodextrin-modified polyurethane exhibits enhanced micro-region order in the hard segments, while the introduction of adamantane optimizes the phase separation structure, enabling the material to maintain morphological stability at high temperatures. This dual modification strategy, through the synergistic effect of enhanced physical cross-linking and rigid structure, achieves improved heat shrinkage.

[0027] 3. This invention effectively improves the elasticity, strength and heat shrinkage of composite fabrics by introducing dimethyl hydroxy silicone oil into the formation of polyurethane prepolymer. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Unless otherwise specified, all reagents and raw materials used in this invention are commercially available.

[0030] Hyperbranched polyethyleneimine, with a molecular weight of 30,000, was purchased from Beijing Naphthalene Biochemical Technology Co., Ltd. Mercapto-β-cyclodextrin was purchased from Hefei Bomei Biotechnology Co., Ltd. Dimethyl hydroxy silicone oil, with a molecular weight of 5000, was purchased from Beijing Hangping Silicon Innovation Chemical Co., Ltd.

[0031] Example 1 This embodiment provides a method for producing a high-resilience flexible sofa composite fabric, including the following steps: S1, by mass, 1 part hyperbranched polyethyleneimine (molecular weight of 30,000), 1.2 parts 1,3-diazidoadaramane, and 30 parts dimethyl sulfoxide were mixed and microwaved to 80°C for 2.5 h with a microwave power of 300 W. After centrifugation and dialysis purification (molecular weight cutoff of 10 kDa), adamantane-modified hyperbranched polyethyleneimine was obtained. S2, by mass, 1 part mercapto-β-cyclodextrin, 1.5 parts adamantane-modified hyperbranched polyethyleneimine, and 50 parts triethylamine were mixed and reacted at 40°C for 12 h under a nitrogen atmosphere to obtain adamantane-modified cyclodextrin. S3, by mass, 1 part of polytetrahydrofuran ether diol and 1.5 parts of isocyanate are mixed and reacted at 80°C for 4 hours under a nitrogen atmosphere. Then, 0.6 parts of diethyltoluene diamine and 0.2 parts of dimethyl hydroxy silicone oil (molecular weight 5000) are added and stirred to obtain a polyurethane prepolymer. By mass, 1 part adamantane-modified cyclodextrin, 1.4 parts polyurethane prepolymer, 0.06 parts dibutyltin dilaurate, and 60 parts anhydrous dichloromethane were mixed and reacted at 50°C for 4 hours under a nitrogen atmosphere. After the reaction was completed, the solution was filtered and degassed to obtain the spinning solution. S4, high-resilience flexible fiber is obtained by dry spinning of spinning solution, the high-resilience flexible fiber is woven to form a blank, and the blank is post-treated to obtain high-resilience flexible sofa composite fabric.

[0032] Example 2 This embodiment provides a method for producing a high-resilience flexible sofa composite fabric, including the following steps: S1, by mass, 1 part hyperbranched polyethyleneimine (molecular weight 30,000), 1.8 parts 1,3-diazidoadaramane, and 458 parts dimethyl sulfoxide were mixed and microwaved to 80°C for 3.5 h with a microwave power of 300 W. After centrifugation and dialysis purification (molecular weight cutoff of 10 kDa), adamantane-modified hyperbranched polyethyleneimine was obtained. S2, by mass, 1 part mercapto-β-cyclodextrin, 1.8 parts adamantane-modified hyperbranched polyethyleneimine, and 80 parts triethylamine were mixed and reacted at 50°C for 12 h under a nitrogen atmosphere to obtain adamantane-modified cyclodextrin. S3, by mass, 1 part of polytetrahydrofuran ether diol and 1.5 parts of isocyanate are mixed and reacted at 80°C for 4 hours under a nitrogen atmosphere. Then, 0.6 parts of diethyltoluene diamine and 0.2 parts of dimethyl hydroxy silicone oil (molecular weight 5000) are added and stirred to obtain a polyurethane prepolymer. By weight, 1 part adamantane-modified cyclodextrin, 1.7 parts polyurethane prepolymer, 0.08 parts dibutyltin dilaurate, and 80 parts anhydrous dichloromethane were mixed and reacted at 50°C for 4 hours under a nitrogen atmosphere. After the reaction was completed, the solution was filtered and degassed to obtain the spinning solution. S4, high-resilience flexible fiber is obtained by dry spinning of spinning solution, the high-resilience flexible fiber is woven to form a blank, and the blank is post-treated to obtain high-resilience flexible sofa composite fabric.

[0033] Comparative Example 1 This comparative example provides a method for producing a high-resilience flexible sofa composite fabric, including the following steps: S1, by mass, 1 part of polytetrahydrofuran ether diol and 1.5 parts of isocyanate are mixed and reacted at 80°C for 4 hours under a nitrogen atmosphere. Then, 0.6 parts of diethyltoluene diamine and 0.2 parts of dimethyl hydroxy silicone oil (molecular weight 5000) are added and stirred to obtain the spinning solution. S2, high-resilience flexible fibers are obtained by dry spinning of spinning solution, and the high-resilience flexible fibers are woven to form a blank. The blank is then post-treated to obtain a high-resilience flexible sofa composite fabric.

[0034] Comparative Example 2 This comparative example provides a method for producing a high-resilience flexible sofa composite fabric, including the following steps: S1, by mass, 1 part of polytetrahydrofuran ether diol and 1.5 parts of isocyanate are mixed and reacted at 80°C for 4 hours under a nitrogen atmosphere. Then, 0.6 parts of diethyltoluene diamine and 0.2 parts of dimethyl hydroxy silicone oil (molecular weight 5000) are added and stirred to obtain polyurethane prepolymer. By weight, 1 part mercapto-β-cyclodextrin, 1.4 parts polyurethane prepolymer, 0.06 parts dibutyltin dilaurate, and 60 parts anhydrous dichloromethane were mixed and reacted at 50°C for 4 hours under a nitrogen atmosphere. After the reaction was completed, the solution was filtered and degassed to obtain the spinning solution. S2, high-resilience flexible fibers are obtained by dry spinning of spinning solution, and the high-resilience flexible fibers are woven to form a blank. The blank is then post-treated to obtain a high-resilience flexible sofa composite fabric.

[0035] Comparative Example 3 This comparative example provides a method for producing a high-resilience flexible sofa composite fabric, including the following steps: S1, by mass, 1 part hyperbranched polyethyleneimine (molecular weight of 30,000), 1.2 parts 1,3-diazidoadaramane, and 30 parts dimethyl sulfoxide were mixed and microwaved to 80°C for 2.5 h with a microwave power of 300 W. After centrifugation and dialysis purification (molecular weight cutoff of 10 kDa), adamantane-modified hyperbranched polyethyleneimine was obtained. S2, by mass, 1 part mercapto-β-cyclodextrin, 1.5 parts adamantane-modified hyperbranched polyethyleneimine, and 50 parts triethylamine were mixed and reacted at 40°C for 12 h under a nitrogen atmosphere to obtain adamantane-modified cyclodextrin. S3, by weight, 1 part of polytetrahydrofuran ether diol and 1.5 parts of isocyanate are mixed and reacted at 80°C for 4 hours under a nitrogen atmosphere. Then, 0.6 parts of diethyltoluene diamine are added and stirred to obtain a polyurethane prepolymer. By mass, 1 part adamantane-modified cyclodextrin, 1.4 parts polyurethane prepolymer, 0.06 parts dibutyltin dilaurate, and 60 parts anhydrous dichloromethane were mixed and reacted at 50°C for 4 hours under a nitrogen atmosphere. After the reaction was completed, the solution was filtered and degassed to obtain the spinning solution. S4, high-resilience flexible fiber is obtained by dry spinning of spinning solution, the high-resilience flexible fiber is woven to form a blank, and the blank is post-treated to obtain high-resilience flexible sofa composite fabric.

[0036] Comparative Example 4 This comparative example provides a method for producing a high-resilience flexible sofa composite fabric, including the following steps: S1, by mass, 1 part hyperbranched polyethyleneimine (molecular weight of 30,000), 1.2 parts 1,3-diazidoadaramane, and 30 parts dimethyl sulfoxide were mixed and microwaved to 80°C for 2.5 h with a microwave power of 300 W. After centrifugation and dialysis purification (molecular weight cutoff of 10 kDa), adamantane-modified hyperbranched polyethyleneimine was obtained. S2, by mass, 1 part mercapto-β-cyclodextrin, 1.5 parts adamantane-modified hyperbranched polyethyleneimine, and 50 parts triethylamine were mixed and reacted at 40°C for 12 h under a nitrogen atmosphere to obtain adamantane-modified cyclodextrin. S3, by mass, 1 part of polytetrahydrofuran ether diol and 1.5 parts of isocyanate are mixed and reacted at 80°C for 4 hours under a nitrogen atmosphere. Then, 0.6 parts of diethyltoluene diamine and 0.2 parts of dimethyl hydroxy silicone oil (molecular weight 5000) are added and stirred to obtain a polyurethane prepolymer. By weight, 1 part adamantane-modified cyclodextrin and 1.4 parts polyurethane prepolymer are physically mixed, and after filtration and degassing, spinning solution is obtained. S4, high-resilience flexible fiber is obtained by dry spinning of spinning solution, the high-resilience flexible fiber is woven to form a blank, and the blank is post-treated to obtain high-resilience flexible sofa composite fabric.

[0037] Performance testing The fabrics obtained from the examples and comparative examples were tested. The breaking strength was tested according to GB / T 3923.1-1997, the elastic elongation was tested according to ASTM D 3107-75, and the heat shrinkage was tested according to ASTM D123. The results are shown in Table 1.

[0038] Table 1 Performance Test Results The performance test results above show that the fabrics prepared in Examples 1-2 have good resilience, strength and heat resistance, especially Example 2, which has the most outstanding comprehensive performance. This is mainly due to the synergistic effect between adamantane-modified cyclodextrin and polyurethane prepolymer.

[0039] The comparative example, however, did not employ the necessary technical solutions, resulting in significantly worse performance than the embodiment in the corresponding tests. This further demonstrates the irreplaceable nature of the specific technical solution in this application for achieving the technical effect and solving the technical problem.

[0040] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for producing a high-resilience flexible sofa composite fabric, characterized in that, Includes the following steps: S1, hyperbranched polyethyleneimine, 1,3-diazidoadaramane, and dimethyl sulfoxide were mixed and reacted once. After purification by centrifugation and dialysis, adamantane-modified hyperbranched polyethyleneimine was obtained. S2, a secondary reaction is carried out by mixing mercapto-β-cyclodextrin, adamantane-modified hyperbranched polyethyleneimine, and triethylamine to obtain adamantane-modified cyclodextrin; S3 involves mixing adamantane-modified cyclodextrin, polyurethane prepolymer, dibutyltin dilaurate, and anhydrous dichloromethane for three reactions. After the reaction is completed, the solution is filtered and degassed to obtain the spinning solution. S4, high-resilience flexible fiber is obtained by dry spinning of spinning solution, the high-resilience flexible fiber is woven to form a blank, and the blank is post-treated to obtain high-resilience flexible sofa composite fabric.

2. The method for producing the high-resilience flexible sofa composite fabric according to claim 1, characterized in that, In step S1, the mass ratio of the hyperbranched polyethyleneimine, 1,3-diazidoadaramane, and dimethyl sulfoxide is 1:(1-2):(10-50). And / or, the molecular weight of the hyperbranched polyethyleneimine is 20,000-50,000.

3. The method for producing the high-resilience flexible sofa composite fabric according to claim 1, characterized in that, In step S1, the conditions for the first reaction are: microwave heating to 60-100℃, reaction time 2-4h, and microwave power 200-400W.

4. The method for producing the high-resilience flexible sofa composite fabric according to claim 1, characterized in that, In step S1, the molecular weight cutoff for dialysis is 10 kDa.

5. The method for producing the high-resilience flexible sofa composite fabric according to claim 1, characterized in that, In step S2, the mass ratio of mercapto-β-cyclodextrin, adamantane-modified hyperbranched polyethyleneimine, and triethylamine is 1:(1-2):(30-100).

6. The method for producing the high-resilience flexible sofa composite fabric according to claim 1, characterized in that, In step S2, the conditions for the secondary reaction are: under a nitrogen atmosphere, at 30-60°C for 8-16 hours.

7. The method for producing the high-resilience flexible sofa composite fabric according to claim 1, characterized in that, In step S3, the preparation method of the polyurethane prepolymer is as follows: Polytetrahydrofuran ether diol and isocyanate were subjected to a hydrothermal reaction, followed by the addition of diethyltoluene diamine and dimethyl hydroxy silicone oil, and the mixture was stirred to obtain a polyurethane prepolymer.

8. The method for producing the high-resilience flexible sofa composite fabric according to claim 7, characterized in that, The hydrothermal reaction conditions are: under a nitrogen atmosphere, at 70-100℃ for 2-6 hours; And / or, the mass ratio of the polytetrahydrofuran ether diol, isocyanate, diethyltoluene diamine, and dimethylhydroxy silicone oil is 1:(1-2):(0.5-0.8):(0.1-0.5); And / or, the molecular weight of the dimethyl hydroxy silicone oil is 1000-20000.

9. The method for producing the high-resilience flexible sofa composite fabric according to claim 1, characterized in that, In step S3, the mass ratio of the adamantane-modified cyclodextrin, polyurethane prepolymer, dibutyltin dilaurate, and anhydrous dichloromethane is 1:(1-2):(0.05-0.1):(50-100). And / or, in step S3, the conditions for the three reactions are: under a nitrogen atmosphere, at 40-70°C for 2-5 hours.

10. A high-resilience flexible sofa composite fabric obtained by the production method of the high-resilience flexible sofa composite fabric as described in any one of claims 1-9.

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