Room temperature curing single-component silica gel, preparation method thereof and application of silica gel in textiles

Abstract

The invention relates to the technical field of silica gel processing, in particular to room-temperature-cured single-component silica gel, a preparation method of the room-temperature-cured single-component silica gel and application of the room-temperature-cured single-component silica gel to textiles. The silicone rubber is prepared from alpha, omega-dihydroxy polydimethylsiloxane, side-chain epoxy silicone oil, methylisobutylketoxime silane, ethyltriacetoxysiloxane, tetramethyldivinylsilazane, a titanium complex, fumed silica, an adhesion promoter and a modified tackifier. The modified tackifier is room-temperature cured single-component silica gel prepared by reacting isocyanatopropyltrimethoxysilane and 3-aminopropyltrimethoxysilane, the room-temperature cured single-component silica gel is used for being attached to the surface of a fiber line, so that a silica gel layer which is evenly attached to the surface of the fiber line is formed, and then the fiber line is woven into the fabric. The problems that a traditional silica gel coating fabric is poor in breathability, insufficient in skin-friendly performance and poor in durability are effectively solved, meanwhile, the silica gel coating fabric has excellent stretching resistance and washing and aging resistance, and the anti-skid durability, the skin-friendly performance and the mechanical stability are considered at the same time.

Description

Technical Field

[0001] This application relates to the field of silicone processing technology, and more specifically, to a room temperature curing single-component silicone, its preparation method, and its application in textiles. Background Technology

[0002] As the application fields of functional textiles continue to expand, the demand for anti-slip fabrics in medical devices, sports protection, and special workwear is becoming increasingly prominent. For example, medical elastic bandages need to ensure that they do not easily slip or shift after being wrapped, while yoga mats and sports protective gear require stable grip during use. Traditional fabrics, due to their smooth fiber surfaces and low coefficient of friction, are difficult to meet the static and dynamic anti-slip requirements of these scenarios.

[0003] To improve the anti-slip performance of fabrics, existing processes involve uniformly applying polysiloxane-based colloids to the fabric surface via screen printing, blade coating, or roller coating, followed by high-temperature baking to form a continuous, flexible, solid film. The silicone coating, with its unique molecular chain flexibility and surface viscosity, can increase the static friction coefficient between the fabric and the contact surface, effectively preventing relative slippage. Furthermore, silicone itself possesses excellent weather resistance, washability, and chemical stability, resulting in a long service life for the anti-slip function.

[0004] However, while the continuous and dense silicone coating achieves excellent anti-slip performance, it inevitably leads to a sharp decline in the fabric's breathability. This is because the cross-linked network structure formed after the silicone cures is dense, and the coated area almost completely seals off the original pore channels of the fabric, reducing air and moisture permeability by more than 80%. This results in the finished fabric's moisture permeability typically being below 2000g / (m².24h), far below the basic comfort threshold of 5000g / (m².24h) for close-fitting textiles. In actual use, the sweat vapor produced by the human body is difficult to expel quickly, accumulating between the skin and the fabric to create a humid and hot microenvironment, which can easily cause stuffiness, itchy skin, and even eczema, especially in high-intensity use scenarios such as yoga wear and sports protective gear.

[0005] Secondly, the insufficient skin-friendliness of silicone coatings severely limits their application in products that come into direct contact with the skin. Silicone itself has a high modulus, and although the resulting film is elastic, it lacks the soft texture of natural fibers. The excessively high coefficient of friction causes a dragging sensation when worn. Furthermore, the coating thickness typically needs to reach 0.15-0.30mm to ensure a non-slip effect, which makes the fabric feel stiff, reduces drape, and results in poor fit to the body's curves.

[0006] Furthermore, traditional coating processes suffer from drawbacks such as limited functionality and poor durability. Silicone films are prone to micro-cracks after repeated stretching and washing, leading to a decline in anti-slip performance; their bonding with fabric fibers relies on physical adhesion, and their soap wash fastness is generally below grade 3. Therefore, achieving high breathability, excellent skin-friendliness, and long-lasting durability while maintaining anti-slip functionality has become a key bottleneck restricting the technological upgrade of anti-slip fabrics. Summary of the Invention

[0007] To address the issues of poor breathability and skin-friendliness when coating fabrics with silicone, this application provides a room-temperature curing single-component silicone, its preparation method, and its application in textiles.

[0008] In a first aspect, this application provides a room temperature curing one-component silicone rubber, employing the following technical solution: A room-temperature curing, one-component silicone rubber is prepared from the following raw materials in parts by weight: 80-90 parts of α,ω-dihydroxypolydimethylsiloxane 5-8 parts of side-chain epoxy silicone oil 2-4 parts of methyl isobutyl ketone oxime silane 1-3 parts of ethyltriacetoxysiloxane 3-5 parts of tetramethyldivinylsilazane 0.1-0.5 parts of titanium complex 15-25 parts of fumed silica 1-2 parts of adhesion promoter 3-6 parts of modified tackifier The modified thickener was prepared by reacting propyltrimethoxysilane isocyanate and 3-aminopropyltrimethoxysilane.

[0009] By employing the above-mentioned technical solution, a room-temperature curing single-component silicone rubber is prepared and applied to the surface of fiber yarns, forming a uniformly adhered silicone layer. This layer is then woven into fabric, effectively solving the problems of poor breathability, insufficient skin-friendliness, and poor durability associated with traditional silicone-coated fabrics. Compared to continuous and dense coating structures, the silicone layer adhering to the fiber yarn surface does not close the natural pores formed by the weaving process, thus improving the fabric's breathability and moisture permeability, allowing the moisture permeability to meet the comfort threshold requirements for close-fitting textiles. Simultaneously, the silicone layer formed by this silicone rubber adheres tightly to the fiber yarns, significantly improving the fabric's skin-friendly feel, reducing drag during wear, and enhancing its fit to the body's curves. Furthermore, the silicone layer formed after curing exhibits stable mechanical properties, and combined with the enhanced interfacial bonding of the various components, the fabric maintains good anti-slip properties even after repeated stretching and washing, extending the product's lifespan.

[0010] Among them, α,ω-dihydroxypolydimethylsiloxane serves as the basic elastic component, providing excellent flexibility and surface adhesion to the silicone, thus achieving anti-slip function; side-chain epoxy silicone oil can react with the surface-active groups of the fiber and other components through epoxy groups, enhancing the bonding force between silicone and fiber and helping to improve the stability of the cross-linking network; methyl isobutyl ketone oxime silane and ethyl triacetoxysiloxane serve as cross-linking agents, which, under the catalysis of titanium complexes, can undergo cross-linking reactions with the hydroxyl groups of the basic siloxane, promoting the curing of the silicone system to form a structurally stable silicone layer, achieving room temperature curing and molding, and the curing process is mild and will not damage the original properties of the fiber yarn; Methyldivinylsilazane can regulate the reactivity of the system, optimize the curing speed and the elasticity of the finished product; fumed silica, as a reinforcing filler, can improve the mechanical properties of the silicone layer and enhance its tensile and crack resistance; while the modified tackifier prepared by the reaction of propyltrimethoxysilane and 3-aminopropyltrimethoxysilane has siloxane groups in its molecular structure that can crosslink with silicone components, and amino and isocyanate groups that can strongly bind with hydroxyl and carboxyl groups on the fiber surface, which greatly improves the adhesion of silicone to the fiber surface, thereby improving the durability of the fabric's anti-slip performance. Ultimately, the components work together to form an anti-slip, stable, breathable, skin-friendly, and durable silicone system.

[0011] Preferably, the modified tackifier is prepared by the following method: Under a nitrogen atmosphere and at a temperature of -5°C to 0°C, a solution of 3-aminopropyltrimethoxysilane was added dropwise to a solution of propyltrimethoxysilane isocyanate, with the temperature maintained below 5°C throughout the process. After the addition was complete, the temperature was maintained at 0°C for 30-40 minutes, then slowly increased to 20-25°C and reacted for 2-3 hours. The temperature was then increased to 40-50°C and the reaction continued for 2-4 hours. The solvent was removed by vacuum distillation, and the product was washed 2-3 times with anhydrous n-hexane to obtain the modified thickener.

[0012] By adopting the above technical solution, the modified tackifier can play an efficient role in room temperature curing single-component silicone. The siloxane groups in its molecule can combine with α,ω-dihydroxypolydimethylsiloxane, adhesion promoters and other components, which greatly enhances the interfacial adhesion between the silicone layer and the fiber thread, thereby improving the durability of the fabric's anti-slip performance.

[0013] Preferably, the molar ratio of 3-aminopropyltrimethoxysilane to propyltrimethoxysilane is (1-1.1):1.

[0014] By adopting the above technical solution, the isocyanate groups of propyltrimethoxysilane can be completely reacted, avoiding residual impurities from affecting the adhesion-enhancing effect. This ratio can directionally generate products with regular structures. Its amino groups can anchor the fiber threads, and the siloxane groups connect the silicone, forming a stable bond with the adhesion promoter, which greatly improves the adhesion between silicone rubber and fiber threads, reduces shedding after washing and stretching, and reduces the decrease in anti-slip performance. Moreover, the reaction is thorough and does not damage the fabric pores, ensuring breathability and skin-friendliness.

[0015] Preferably, the α,ω-dihydroxy polydimethylsiloxane is composed of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 100,000-200,000 mpa·s at 25°C, α,ω-dihydroxy polydimethylsiloxane with a viscosity of 10,000-90,000 mpa·s at 25°C, and α,ω-dihydroxy polydimethylsiloxane with a viscosity of 1,000-9,000 mpa·s at 25°C, in a weight ratio of 1:(2-4):(6-9).

[0016] By adopting the above technical solution, the low-viscosity component has the highest proportion, which improves the fluidity of the silicone and ensures uniform coating on the surface of the fiber yarn during soaking; the medium-viscosity component enhances the elasticity of the system, and the high-viscosity component improves the viscosity. The two work together to ensure the anti-slip effect. The three components work together to make the cured silicone layer flexible and stable, reduce stretching and washing cracks, and do not clog the pores of the fabric, helping the fabric to balance anti-slip, breathable and moisture-wicking, and skin-friendly properties.

[0017] Preferably, the methyl isobutyl ketone oxime silane is composed of vinyltris(methyl isobutyl ketone oxime)silane and tetra(methyl isobutyl ketone oxime)silane in a weight ratio of (2-3):0.5.

[0018] By adopting the above technical solution, vinyltris(methylisobutyl ketone oxime)silane is used as the main component. Its vinyl group can react with components containing double bonds in the system, enhancing the cross-linking network. Tetra(methylisobutyl ketone oxime)silane has more cross-linking points, further improving the network density. Optimizing the ratio of the two components allows for controllable cross-linking rate, resulting in a silicone layer with both elasticity and strength after curing, reducing stretching and washing cracks. Simultaneously, it ensures the adhesion of the silicone to the fiber threads, helping the fabric maintain its anti-slip properties without affecting breathability, moisture permeability, and skin-friendly feel.

[0019] Preferably, the average particle size of the fumed silica is 50-200 nm.

[0020] By adopting the above technical solution, the mechanical properties of the silicone layer can be further improved, enhancing its tensile and crack resistance. At the same time, in combination with other components, the silicone and fibers are tightly bonded, allowing the fabric to maintain good anti-slip performance after repeated stretching and washing, thus extending the product's service life.

[0021] Preferably, the side-chain epoxy silicone oil has an epoxy value of 0.03-0.9 mmol / g and a molecular weight of 5000-20000 at a temperature of 25°C, with a side chain epoxy value of 50-1000 mPa·s.

[0022] By adopting the above technical solution, the viscosity of the side-chain epoxy silicone oil is optimized to ensure its high compatibility with other components of the silicone system without affecting the overall fluidity of the silicone, thus guaranteeing a uniform coating effect during fiber soaking. Simultaneously, a suitable epoxy value endows it with appropriate reactivity, allowing it to interact with hydroxyl and amino groups on the fiber surface and other components containing active groups in the silicone, enhancing the interfacial adhesion between the silicone rubber and the fiber. An appropriate molecular weight balances its flexibility and structural stability, enabling it to integrate into the silicone cross-linking network, improving elasticity, reducing micro-cracks in the silicone layer after stretching and washing, enhancing durability and skin-friendliness, and without obstructing the fabric's breathability.

[0023] Preferably, the adhesion promoter comprises at least one of methyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-methacryloyloxypropyltrimethoxysilane, and tetramethoxysilane.

[0024] By adopting the above technical solution, the bonding force between room temperature curing single-component silicone and fiber yarn is further enhanced, preventing the silicone layer from falling off during washing and stretching. This not only improves the fabric's anti-slip performance and durability but also allows for thin-coat application of silicone rubber, reducing clogging of fiber yarn pores and helping to maintain the fabric's breathability, moisture permeability, and skin-friendly feel, ensuring that the anti-slip fabric meets the needs of close-fitting use.

[0025] Secondly, this application provides a method for preparing room temperature curing one-component silicone, using the following technical solution: A method for preparing room temperature curing one-component silicone includes the following preparation steps: S1. Mix α,ω-dihydroxypolydimethylsiloxane, adhesion promoter, side-chain epoxy silicone oil and fumed silica evenly to obtain mixture A; S2. Add methyl isobutyl ketone oxime silane, ethyl triacetoxysiloxane, tetramethyldivinylsilazane, titanium complex and modified tackifier to mixture A and stir until homogeneous to obtain room temperature curing one-component silicone.

[0026] By adopting the above technical solution, the components are evenly dispersed, and the fluidity of the silicone is adapted to the soaking requirements of the fiber yarn, resulting in more uniform adhesive application. After curing, the silicone layer bonds tightly to the fiber yarn, exhibiting excellent mechanical properties, ensuring both anti-slip effect and preserving the breathable pores of the fabric.

[0027] Thirdly, this application provides an application of room temperature curing one-component silicone, employing the following technical solution: An application of room temperature curing single-component silicone involves immersing fiber yarn in the room temperature curing single-component silicone described in the first aspect or the room temperature curing single-component silicone prepared in the second aspect, curing it, obtaining fiber yarn with silicone rubber attached to its surface, and then weaving it into fabric.

[0028] By adopting the above technical solution, the process of soaking fiber threads in room temperature curing single-component silicone and then weaving them into fabric effectively solves the problems of poor breathability, insufficient skin-friendliness, and poor anti-slip durability of traditional silicone coated fabrics. Silicone exists as an adhesive layer on the surface of individual fibers rather than covering the entire pore structure of the fabric. This preserves the original pore channel structure of the fabric, significantly increasing air and moisture permeability. The finished fabric's moisture permeability meets the comfort threshold requirements for close-fitting textiles, quickly releasing human sweat vapor and avoiding stuffiness and skin health problems caused by a humid microenvironment. At the same time, the silicone's adhesion to the fiber surface allows the fabric to retain the soft texture of natural fibers while avoiding an overall stiff feel due to the silicone layer's thickness being adapted to the fiber characteristics. This improves the fit to the body's curves and reduces the dragging sensation during wear. The flexibility of the silicone layer's molecular chains and surface viscosity ensure that the fabric maintains an excellent static friction coefficient. Meanwhile, modified tackifiers and other components strengthen the bond between silicone and fibers. Combined with the synergistic improvement in mechanical properties, the silicone layer is less prone to micro-cracks after repeated stretching and washing, its anti-slip function decays slowly, and its soap wash fastness is improved, meeting the long-term use needs of medical devices, sports protection, and other scenarios.

[0029] In summary, this application has the following beneficial effects: 1. The silicone material in this application achieves mild room temperature curing via α,ω-dihydroxypolydimethylsiloxane, methyl isobutyl ketone oxime silane, and ethyl triacetoxysiloxane under titanium complex catalysis. Combined with tetramethyldivinylsilazane for activity regulation, a discontinuous silicone layer can be formed on the fiber surface, preventing the closure of fabric weave pores and significantly improving the fabric's breathability and moisture permeability, meeting the comfort threshold for close-fitting textiles. The synergistic effect of side-chain epoxy silicone oil and isocyanate-propyltrimethoxysilane-3-aminopropyltrimethoxysilane reactive modified tackifier, through the chemical bonding of epoxy, amino, and isocyanate groups with the fiber surface active groups, greatly enhances the interfacial adhesion and cross-linking network stability between the silicone layer and the fiber. Supplemented with fumed silica reinforcement, the fabric maintains the flexible and anti-slip properties of silicone rubber while possessing excellent tensile strength and wash aging resistance, achieving a balance between anti-slip durability, skin-friendliness, and mechanical stability. Detailed Implementation

[0030] The aminopropyltrimethoxysilane solution was obtained by mixing 3-aminopropyltrimethoxysilane and anhydrous tetrahydrofuran.

[0031] The isocyanate trimethoxysilane solution is obtained by mixing the isocyanate trimethoxysilane solution with anhydrous tetrahydrofuran.

[0032] Preparation Example 1 A modified tackifier is prepared by the following method: Under a nitrogen atmosphere and at a temperature of -5°C, a solution of 3-aminopropyltrimethoxysilane (17.9 g of 3-aminopropyltrimethoxysilane and 80 ml of anhydrous tetrahydrofuran) was added dropwise to a solution of propyltrimethoxysilane isocyanate (21.7 g of propyltrimethoxysilane and 80 ml of anhydrous tetrahydrofuran). The temperature was kept below 5°C throughout the process. After the addition was complete, the temperature was maintained at 0°C for 30 min, then slowly increased to 20°C and reacted for 2 hours. The temperature was then increased to 40°C and reacted for another 2 hours. The solvent was distilled off under reduced pressure, and the product was washed twice with anhydrous n-hexane to obtain the modified thickener.

[0033] The molar ratio of 3-aminopropyltrimethoxysilane to propyltrimethoxysilane is 1:1.

[0034] Preparation Example 2 A modified tackifier is prepared by the following method: Under a nitrogen atmosphere and at a temperature of -3°C, a solution of 3-aminopropyltrimethoxysilane (37.65 g of 3-aminopropyltrimethoxysilane and 80 ml of anhydrous tetrahydrofuran) was added dropwise to a solution of propyltrimethoxysilane isocyanate (43.4 g of propyltrimethoxysilane and 80 ml of anhydrous tetrahydrofuran). The temperature was kept below 5°C throughout the process. After the addition was complete, the temperature was maintained at 0°C for 35 min, then slowly increased to 23°C and reacted for 2.5 h. The temperature was then increased to 45°C and reacted for another 3 h. The solvent was distilled off under reduced pressure, and the product was washed twice with anhydrous n-hexane to obtain the modified thickener.

[0035] The molar ratio of 3-aminopropyltrimethoxysilane to propyltrimethoxysilane is 1.05:1.

[0036] Preparation Example 3 A modified tackifier is prepared by the following method: Under a nitrogen atmosphere and at a temperature of 0°C, a solution of 3-aminopropyltrimethoxysilane (39.45 g of 3-aminopropyltrimethoxysilane and 80 ml of anhydrous tetrahydrofuran) was added dropwise to a solution of propyltrimethoxysilane isocyanate (43.4 g of propyltrimethoxysilane and 80 ml of anhydrous tetrahydrofuran). The temperature was kept below 5°C throughout the process. After the addition was complete, the temperature was maintained at 0°C for 40 min, then slowly increased to 25°C and reacted for 3 hours. The temperature was then increased to 50°C and reacted for another 2 hours. The solvent was distilled off under reduced pressure, and the product was washed three times with anhydrous n-hexane to obtain the modified thickener.

[0037] The molar ratio of 3-aminopropyltrimethoxysilane to propyltrimethoxysilane is 1.1:1. Example

[0038] The structural formula of the side-chain epoxy-based silicone oil in this application is as follows:

[0039] The titanium complex is DuPont Tyzor® AA-75. Example

[0040] A room-temperature curing, one-component silicone rubber is prepared by the following method: S1. Mix 800g of α,ω-dihydroxypolydimethylsiloxane, 10g of adhesion promoter (methyltrimethoxysilane), 50g of side-chain epoxy silicone oil and 150g of fumed silica evenly to obtain mixture A. α,ω-dihydroxy polydimethylsiloxane is composed of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 100,000 mPa·s at 25°C, α,ω-dihydroxy polydimethylsiloxane with a viscosity of 10,000 mPa·s at 25°C, and α,ω-dihydroxy polydimethylsiloxane with a viscosity of 1,000 mPa·s at 25°C, in a weight ratio of 1:2:6. The average particle size of fumed silica is 50 nm; The side-chain epoxy silicone oil has an epoxy value of 0.03 mmol / g and a molecular weight of 5000 at 25℃ and 50 mPa·s. S2. Add 20g of methyl isobutyl ketone oxime silane, 10g of ethyl triacetoxysiloxane, 30g of tetramethyldivinylsilazane, 1g of titanium complex and 30g of modified tackifier to mixture A and stir until homogeneous to obtain room temperature curing single-component silicone. Methyl isobutyl ketone oxime silane is composed of vinyltris(methyl isobutyl ketone oxime)silane and tetra(methyl isobutyl ketone oxime)silane in a weight ratio of 2:0.5; The difference between Examples 2-3 and Example 1 lies in the types, amounts, and parameters of raw materials used to prepare room temperature curing single-component silicone. Specific differences are shown in Table 1. Table 1. Raw material types, dosages, and parameters for preparing room temperature curing one-component silicone rubber.

[0041] In Example 2, α,ω-dihydroxy polydimethylsiloxane is composed of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 150,000 mpa·s at 25°C, α,ω-dihydroxy polydimethylsiloxane with a viscosity of 50,000 mpa·s at 25°C, and α,ω-dihydroxy polydimethylsiloxane with a viscosity of 5,000 mpa·s at 25°C, in a weight ratio of 1:3:7. In Example 3, α,ω-dihydroxy polydimethylsiloxane is composed of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 200,000 mpa·s at 25°C, α,ω-dihydroxy polydimethylsiloxane with a viscosity of 90,000 mpa·s at 25°C, and α,ω-dihydroxy polydimethylsiloxane with a viscosity of 9,000 mpa·s at 25°C, in a weight ratio of 1:4:9.

[0042] Example 4 A room temperature curing one-component silicone, the difference between this embodiment and Example 1 is that α,ω-dihydroxy polydimethylsiloxane is composed of α and ω-dihydroxy polydimethylsiloxane with a viscosity of 100000 mpa·s at 25°C, and α and ω-dihydroxy polydimethylsiloxane with a viscosity of 10000 mpa·s at 25°C, in a weight ratio of 1:2.

[0043] Example 5 A room temperature curing one-component silicone, the difference between this embodiment and Example 1 is that α,ω-dihydroxypolydimethylsiloxane is α and ω-dihydroxypolydimethylsiloxane with a viscosity of 100000 mpa·s at 25°C.

[0044] Example 6 A room temperature curing one-component silicone, the difference between this embodiment and Example 1 is that the methyl isobutyl ketone oxime silane is vinyltris(methyl isobutyl ketone oxime) silane.

[0045] Example 7 A room temperature curing one-component silicone, the difference between this embodiment and Example 1 is that the methyl isobutyl ketone oxime silane is methyltris(methyl isobutyl ketone oxime) silane.

[0046] Example 8 A room temperature curing one-component silicone, the difference between this embodiment and Example 1 is that the side chain epoxy silicone oil has an epoxy value of 1 mmol / g and a molecular weight of 5000 at 25°C with a curing temperature of 50 mPa·s.

[0047] Example 9 A room temperature curing one-component silicone, the difference between this embodiment and Example 1 is that the side chain epoxy silicone oil has an epoxy value of 0.03 mmol / g and a molecular weight of 4000 at 25°C with a temperature of 50 mPa·s.

[0048] Comparative Example Comparative Example 1 A room temperature curing one-component silicone rubber, the difference between this comparative example and Example 1 is that the modified tackifier is replaced with isopropyltrimethoxysilane.

[0049] Comparative Example 2 A room temperature curing one-component silicone rubber, the difference between this comparative example and Example 1 is that the modified tackifier is obtained by mixing propyltrimethoxysilane isocyanate and 3-aminopropyltrimethoxysilane.

[0050] Comparative Example 3 A room temperature curing one-component silicone rubber, the difference between this comparative example and Example 1 is that amino silicone oil is used instead of side-chain epoxy silicone oil.

[0051] The amino silicone oil is Dow Corning's EPA-14 amino silicone oil.

[0052] Comparative Example 4 A room temperature curing one-component silicone rubber, the difference between this comparative example and Example 1 is that ethyltriacetoxysiloxane is omitted.

[0053] Application examples Application Example 1 An application of a room temperature curing one-component silicone involves immersing fiber yarns in room temperature curing one-component silicone from Example 1, curing them to obtain fiber yarns with silicone rubber adhering to their surface, and then weaving them into fabric.

[0054] The difference between Application Example 1 and Application Examples 2-13 lies in the source of the room temperature curing one-component silicone rubber. The specific differences are shown in Table 2: Table 2 Room temperature curing one-component silicone rubber in application examples 1-13

[0055] Breathability: Tested according to GB / T 5453-1997, pressure difference 100Pa, test area 20cm²; Moisture permeability: Tested according to GB / T 12704.1-2009, temperature 38℃, humidity 90%, 24h; Fatigue resistance test: The fabric was prepared according to the corresponding test case and subjected to a cyclic tensile load of 20% strain amplitude. The test was conducted continuously for 1000 cycles using an electronic universal testing machine at a frequency of 0.5 Hz. During the test, the condition of the sample was visually inspected every 100 cycles to observe the number of times cracks appeared in the silicone layer. Anti-slip strength: Refer to FZ / T 70010-2006 "Dynamic Anti-slip Performance Test of Knitted Fabrics" to simulate the anti-slip durability under motion conditions; Skin affinity test: The arithmetic mean deviation of the fabric surface profile was measured using a surface roughness tester according to GB / T 1031-2009 standard. Experimental data are shown in Table 3. Table 3 Experimental data from Application Examples 1-13

[0056] The experimental data in the table show that the innovative process of weaving a thin layer of silicone rubber onto the fiber surface into fabric fundamentally solves the problems of poor breathability and moisture permeability, insufficient skin-friendliness, and poor durability of traditional silicone-coated fabrics. This solution, through the chemical bonding of modified tackifiers, the synergistic toughening of composite viscosity siloxanes, and fiber-level adhesion, achieves a comprehensive performance combining anti-slip properties with high moisture permeability, softness, comfort, and long-lasting durability while preserving the original pore structure of the fabric.

[0057] Comparing Application Example 1 with Application Examples 10-13, it is demonstrated that by pre-reacting propyltrimethoxysilane and 3-aminopropyltrimethoxysilane to synthesize a modified tackifier, the anti-slip strength can be increased from 38-41 N to 52 N, and cyclic tensile cracking can be eliminated. Secondly, the active epoxy groups of the side-chain epoxy silicone oil are irreplaceable, which can effectively enhance the interfacial compatibility and cross-linking network stability of silicone rubber and fiber, thereby increasing the moisture permeability by 27% and reducing the skin-friendly Ra value by 30%. The combined use of ethyltriacetoxysiloxane enhances the strength and toughness of the silicone layer. The combined use of these three components achieves the comprehensive functions of high moisture permeability, high durability, and high skin-friendly anti-slip properties of the fabric.

[0058] Comparing Application Example 1 with Application Examples 4-5 demonstrates that when using three viscosity gradient ratios, both moisture permeability and skin-friendliness are achieved. The synergy of these three factors ensures uniform coating, mechanical toughness, and surface softness, preventing pore blockage, stiffness, and stress concentration-induced durability degradation caused by excessively high viscosity. A comparison of Application Example 1 with Application Examples 6-7 demonstrates that the combination of vinyltris(methylisobutyl ketone oxime)silane and tetra(methylisobutyl ketone oxime)silane can effectively disperse cyclic stress, prevent the initiation of microcracks, and maintain the viscosity and adhesion of the silicone layer.

[0059] Comparing Application Example 1 with Application Examples 8-9 demonstrates that optimizing the epoxy value and molecular weight of the side-chain epoxy silicone oil ensures a strong bond with the fiber while maintaining the stress relaxation ability of the silicone layer, thus avoiding embrittlement, pore blockage, and deterioration of skin affinity caused by excessive cross-linking or excessively short chain segments.

[0060] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A room temperature curing one-component silicone rubber, characterized in that, It is prepared from the following raw materials in parts by weight: 80-90 parts of α,ω-dihydroxypolydimethylsiloxane 5-8 parts of side-chain epoxy silicone oil 2-4 parts of methyl isobutyl ketone oxime silane 1-3 parts of ethyltriacetoxysiloxane 3-5 parts of tetramethyldivinylsilazane 0.1-0.5 parts of titanium complex 15-25 parts of fumed silica 1-2 parts of adhesion promoter 3-6 parts of modified tackifier The modified thickener was prepared by reacting propyltrimethoxysilane isocyanate and 3-aminopropyltrimethoxysilane.

2. The room temperature curing one-component silicone rubber according to claim 1, characterized in that, The modified tackifier is prepared by the following method: Under a nitrogen atmosphere and at a temperature of -5°C to 0°C, a solution of 3-aminopropyltrimethoxysilane was added dropwise to a solution of propyltrimethoxysilane isocyanate, with the temperature maintained below 5°C throughout the process. After the addition was complete, the temperature was maintained at 0°C for 30-40 minutes, then slowly increased to 20-25°C and reacted for 2-3 hours. The temperature was then increased to 40-50°C and the reaction continued for 2-4 hours. The solvent was removed by vacuum distillation, and the product was washed 2-3 times with anhydrous n-hexane to obtain the modified thickener.

3. The room temperature curing one-component silicone rubber according to claim 2, characterized in that: The molar ratio of 3-aminopropyltrimethoxysilane to propyltrimethoxysilane is (1-1.1):

1.

4. The room temperature curing one-component silicone rubber according to claim 1, characterized in that: The α,ω-dihydroxy polydimethylsiloxane is composed of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 100,000-200,000 mpa·s at 25°C, α,ω-dihydroxy polydimethylsiloxane with a viscosity of 10,000-90,000 mpa·s at 25°C, and α,ω-dihydroxy polydimethylsiloxane with a viscosity of 1,000-9,000 mpa·s at 25°C, in a weight ratio of 1:(2-4):(6-9).

5. The room temperature curing one-component silicone rubber according to claim 1, characterized in that: The methyl isobutyl ketone oxime silane is composed of vinyltris(methyl isobutyl ketone oxime) silane and tetra(methyl isobutyl ketone oxime) silane in a weight ratio of (2-3):0.

5.

6. The room temperature curing one-component silicone rubber according to claim 1, characterized in that: The average particle size of the fumed silica is 50-200 nm.

7. The room temperature curing one-component silicone rubber according to claim 1, characterized in that: The side-chain epoxy silicone oil has an epoxy value of 0.03-0.9 mmol / g and a molecular weight of 5000-20000 at 25°C with a temperature of 50-1000 mPa·s.

8. The room temperature curing one-component silicone rubber according to claim 1, characterized in that: The adhesion promoter includes at least one of methyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-methacryloyloxypropyltrimethoxysilane, and tetramethoxysilane.

9. A method for preparing a room-temperature curing one-component silicone rubber as described in any one of claims 1-8, characterized in that, The preparation steps include the following: S1. Mix α,ω-dihydroxypolydimethylsiloxane, adhesion promoter, side-chain epoxy silicone oil and fumed silica evenly to obtain mixture A; S2. Add methyl isobutyl ketone oxime silane, ethyl triacetoxysiloxane, tetramethyldivinylsilazane, titanium complex and modified tackifier to mixture A and stir until homogeneous to obtain room temperature curing one-component silicone.

10. An application of a room-temperature curing one-component silicone rubber, characterized in that: The fiber thread is immersed in the room temperature curing single-component silicone as described in any one of claims 1-8 or the room temperature curing single-component silicone prepared in claim 9, and cured to obtain a fiber thread with silicone rubber attached to its surface, which is then woven into a fabric.

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