Texra modified polymer composite textile and object and preparation method thereof

Abstract

The invention discloses a Texra modified polymer composite textile and object and a preparation method thereof. The preparation method comprises the following steps: spinning base cloth; a plurality of modified polydimethylsiloxane layers made of modified polydimethylsiloxane polymers are formed on the textile base cloth; the modified polydimethylsiloxane polymer is prepared from the following raw materials in percentage by weight: 55 to 75 percent of vinyl-terminated polydimethylsiloxane, 3 to 9 percent of methyl hydrogen silicone oil, 0.0001 to 0.2 percent of platinum complex, 18 to 28 percent of fumed silica and 3 to 5 percent of self-made tackifier. Vinyl-terminated polydimethylsiloxane is used as a substrate, the design of the skin-friendly layer is matched, the degelling effect is achieved, and the fabric is soft and smooth in touch feeling, free of sticky feeling and foreign body feeling of traditional glue fabric and excellent in comfort degree when attached to the skin; a stable three-dimensional network structure is formed through a cross-linking reaction of methyl hydrogen silicone oil and a platinum complex, the elastic extension degree of the fabric is effectively improved in cooperation with the reinforcing effect of fumed silica, the fabric quickly recovers to the original shape after external force is released, and the fatigue resistance is far better than that of a traditional fabric.

Description

[0001] This invention belongs to the field of novel textile fabric technology, and relates to a Tefura-modified polymer composite textile, the material, and its preparation method. Background Technology

[0002] The textile industry, especially fabrics for intimate apparel and sports equipment, currently faces two major challenges: First, the homogenization of textile products related to gel-based adhesives is severe, with highly similar product forms and functional designs, making it difficult to meet consumers' demands for personalized, high-quality products. This leads to increased market fatigue and limited user choices. Second, traditional textile fabrics and processing techniques have many insurmountable pain points, directly affecting product user experience and lifespan. Specifically:

[0003] 1. Edge fraying is a prominent issue. Mainstream fabrics such as cotton, modal, and weft-knitted single-sided fabrics have relatively weak inter-fiber bonding, making them prone to fraying and curling at the edges after cutting. This not only damages the product's appearance (such as the frayed edges of bra cups and pant legs) but also shortens the product's lifespan. Additional edge-locking and binding processes are required to remedy this, increasing production costs.

[0004] 2. Poor wearing comfort. The metal underwire, traditional elastic band, and sewing techniques commonly used in underwear have obvious defects: metal underwire can easily compress the chest cavity and create a foreign body sensation, which can easily cause discomfort after prolonged wear; traditional elastic band loses its elasticity quickly and easily leaves marks; the stitches left by the sewing process can easily cause itching when rubbing against the skin, and adhesive-bonded fabrics generally have a sticky feel, which seriously reduces the comfort of wearing underwear.

[0005] 3. Imbalance between elasticity and durability. Existing fabrics often fail to balance elasticity and fatigue resistance: some elastic fabrics are prone to deformation, loosening, and loss of elasticity after repeated stretching or machine washing (such as yoga pants becoming loose at the waist after washing), and cannot maintain their shaping effect for a long time; while fabrics that emphasize durability often feel stiff and lack elasticity, making it difficult to adapt to the needs of human movement.

[0006] 4. Insufficient lightweight and breathability. Some functional fabrics use heavy base materials or multi-layer composite structures in pursuit of support or functionality, resulting in excessive fabric weight. This can easily cause stuffiness and a feeling of restriction when worn, which does not meet the current consumer demand for "lightweight, breathable, and zero-burden" close-fitting products. Especially in sports scenarios, heavy fabrics can easily affect the flexibility and heat dissipation of movement.

[0007] In summary, the shortcomings of existing textile fabrics in terms of skin-friendliness, elasticity and durability, lightweight, and anti-fraying properties can no longer meet the market's demand for high-quality intimate apparel and sports equipment. Summary of the Invention

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A Tefura-modified polymer composite textile, comprising: a textile base fabric, wherein the textile base fabric is a warp-fixed mesh structure breathable woven fabric;

[0010] A multilayer modified polydimethylsiloxane layer, made of a plurality of layers of modified polydimethylsiloxane polymer, is formed on a textile base fabric. The modified polydimethylsiloxane polymer is composed of the following raw materials by weight percentage:

[0011] Vinyl-terminated polydimethylsiloxane (55-75%) has excellent elasticity, flexibility and chemical stability, good resistance to high and low temperatures, and is non-irritating and non-adhesive when in contact with the skin, with a smooth feel. As a base polymer material for fabrics, it is the core component for forming the elastic film layer, giving the fabric basic elasticity and skin-friendly feel, ensuring that the fabric can deform with human movement without producing a stiff feeling. At the same time, its liquid properties facilitate the implementation of subsequent penetration coating processes.

[0012] Methyl hydrogen silicone oil (3-9%) possesses excellent crosslinking reactivity, capable of undergoing addition reactions with vinyl-terminated polydimethylsiloxane, and also exhibits certain lubricity and high-temperature resistance. As a crosslinking agent, it works in conjunction with vinyl-terminated polydimethylsiloxane to form a three-dimensional network structure under catalytic action, enhancing the structural stability and strength of the polymer film, preventing deformation and delamination of the fabric after repeated stretching or machine washing, and simultaneously optimizing the fabric's smooth feel.

[0013] Platinum complex (0.0001-0.2%) is a highly efficient addition reaction catalyst that can initiate the crosslinking reaction of vinyl-terminated polydimethylsiloxane and methyl hydrogen silicone oil at room temperature or medium-low temperature. It has high catalytic efficiency, few by-products, and no negative impact on the elasticity and skin affinity of the polymer. As a reaction catalyst, it can precisely control the crosslinking reaction rate and degree of the core polymer, ensuring that the liquid polymer can be uniformly cast during the coating process and form a stable structure during the curing stage. This avoids bubbles and cracks in the film due to excessively fast reaction, or production efficiency affected by excessively slow reaction.

[0014] Fumed silica (18-28%) is nano-sized amorphous silica with a large specific surface area and good dispersibility. It can be uniformly filled in the polymer matrix and has excellent reinforcing properties, which can improve the wear resistance and tear resistance of the material without affecting the breathability of the fabric. As a reinforcing filler, it is mixed into the core polymer system to enhance the mechanical strength and wear resistance of the polymer film, solving the problem of insufficient strength and easy breakage of pure organosilicon polymers. At the same time, its nano-sized particle size can ensure that the air pores of the fabric are not blocked, maintaining good breathability.

[0015] The self-made tackifier (3-5%) has good interfacial adhesion and can generate strong bonding force with both polymer film components (such as silicone) and textile base fabric fibers (such as cotton and modal). It also has good compatibility with other raw materials and does not damage the elasticity and skin-friendliness of the fabric. As an interfacial binder, it improves the adhesion between the polymer film and the textile base fabric, preventing the film from falling off or delaminating during use. At the same time, it helps to solve the problem of easy detachment at the edges of traditional base fabrics by fixing the edge fibers of the base fabric with adhesive force.

[0016] A method for preparing a Terfura-modified polymer composite textile, characterized by comprising the following steps:

[0017] Step 1, Preparation of Mesh Structure Fabric: Using 50-3000 mesh (50-180 mesh for low mesh counts, 200-3000 mesh for high mesh counts) of wire mesh or steel mesh, and with different opening degrees and opening ratios, breathable mesh structures of varying thicknesses are prepared. This design allows for control of the fabric's air permeability and support by adjusting the mesh count and opening parameters, providing a uniform "channel" for subsequent polymer penetration coating, while simultaneously meeting the needs of different products (such as lightweight bras and durable sports pants) regarding base fabric thickness and breathability.

[0018] Step 2, Fabric Shaping and Frame Fixing: First, the mesh fabric is fixed into sheet-like objects with pre-set hole shapes such as squares and rhombuses. Then, it is flattened and shaped under a CNC tension expansion stretching machine at a tension of 10-200 pounds to ensure that the fabric is wrinkle-free and has uniform tension. Subsequently, frame structure components made of aluminum, aluminum alloy, or steel (sizes selected from one or more of 20mm wide × 35mm high × 1mm thick, 20mm wide × 40mm high × 1.5mm thick, 25mm wide × 45mm high × 2mm thick, and 25mm wide × 50mm high × 2mm thick, and shapes selected from one or more of square, round, oval, and trapezoidal shapes) are used to fix the sheet-like fabric to the top and bottom of the frame through alignment, fixing, and edge locking processes. The frame fixing design can prevent the fabric from shifting during the subsequent coating process, ensuring coating uniformity. At the same time, the rigidity of the metal frame can improve the support stability of the fabric and facilitate the operation of automated equipment.

[0019] Step 3, Precise Positioning and Horizontal Calibration: The woven fabric mesh is secured using bidirectional CNC clamps, and smooth operation is achieved through CNC screw adjustments. The horizontal position is initially calibrated by the rhythmic downward movement of the upper and lower interactive platforms. Then, a four-position capture positioning system and infrared sensors are used to check and adjust the balance and force at each corner point, while controlling offset and trace elements (such as the influence of environmental humidity and temperature on the raw materials) to ensure the woven fabric mesh is in the optimal horizontal position and minimizes error. This step ensures that the polymer evenly covers the base fabric during subsequent coating, avoiding localized over- or under-coating that could affect the fabric's elasticity and skin-friendliness.

[0020] Step 4, First Round of Penetration Coating and Curing: A modified polydimethylsiloxane polymer (based on core raw material compatibility and optimized for fluidity) is used as the coating material. A U-shaped, V-shaped, or O-shaped rubber pressing device with a hardness of 20-99 is used to evenly apply the liquid polymer to the lower pressure plate. After the polymer smoothly penetrates the woven fabric surface through the ventilation holes, a flexible touch sensor lifts the upper pressure plate, slowly forming the first thin film. Subsequently, an octopus-like automatic device transfers the fabric to the curing device, where it is cured under direct sunlight from 10-200 intelligent corrugated heating tubes. The hardness of the rubber pressing device is selected to match polymers with different fluidities, ensuring uniform coating. The intelligent corrugated heating tubes provide stable and uniform heat, ensuring full cross-linking and curing of the polymer to form an elastic thin film layer.

[0021] Step 5, Multiple Coating and Curing Cycles: Repeat the positioning, coating, and curing processes of steps 3-4, cycling 2-100 times. Through multiple cycles, the thickness of the polymer film can be gradually increased, precisely controlling the elasticity, shaping ability, and durability of the fabric—for example, lightweight bras can be cycled 2-10 times to ensure lightweight and comfort; shapewear can be cycled 50-100 times to enhance shaping support.

[0022] Step 6, Skin-friendly layer coating and final curing: Using a specially modified polydimethylsiloxane polymer (with an optimized skin-friendly formula based on the core raw materials to enhance smoothness) as the skin-friendly layer material, repeat the positioning and calibration in Step 3 and the coating process in Step 4 to form the final skin-friendly film and cure it. This design can form a special skin-friendly structure on the fabric surface, further reducing the adhesive feel and improving the comfort of wearing it close to the skin. At the same time, the super-elastic polymer can enhance the fabric's rebound speed and prevent it from sagging after prolonged wear.

[0023] As a further aspect of the present invention: the specially modified polydimethylsiloxane polymer includes, in addition to the premise of being a modified polydimethylsiloxane polymer, the following:

[0024] Polyether-modified siloxane (addition amount: 3-8%) can reduce the surface tension of the film and eliminate the slight stickiness of traditional siloxanes, making the fabric feel non-sticky when in contact with the skin; at the same time, the flexibility of the polyether segment can improve the smoothness of the film, making the touch similar to silk; and it has good compatibility with the vinyl-terminated polydimethylsiloxane in the core raw material, which will not cause delamination; and it has strong water resistance, maintaining its skin-friendly effect after 50 machine washes without affecting the elasticity of the fabric.

[0025] Low molecular weight polydimethylsiloxane (viscosity 50-100 cSt, addition amount: 5-10%) acts as an "internal lubricant," filling the gaps between the molecules of modified polydimethylsiloxane, reducing intermolecular friction, making the film surface smoother and more delicate, and providing a smooth, unobstructed feel when sliding with fingers; it also helps to reduce the film's hardness, preventing a stiff feel; as a low-viscosity alternative to polydimethylsiloxane, it is fully compatible with the core raw materials, avoiding chemical conflicts; and it is non-toxic and non-irritating, meeting skin contact safety standards.

[0026] Organosilicon wax (such as polydimethylsiloxane wax, added at 2-5%) forms an extremely thin "waxy smooth layer" on the film surface after curing. This enhances the "silky smoothness" upon skin contact and slightly improves the fabric's stain resistance (reducing sweat and oil adhesion) without affecting breathability. Its melting point matches the skin-friendly layer's curing temperature (110-130℃), allowing for uniform dispersion on the film surface during curing without clumping. Working synergistically with fumed silica, it maintains smoothness while preventing the film from becoming too soft and easily damaged.

[0027] The beneficial effects of this invention are:

[0028] 1. Skin-friendly and glue-free, significantly improving comfort: With vinyl-terminated polydimethylsiloxane as the base and a skin-friendly layer design, it achieves a "de-adhesive" effect. The fabric is soft and smooth to the touch, without the stickiness and foreign body feeling of traditional adhesive fabrics, and provides excellent comfort when in contact with the skin.

[0029] 2. High elasticity and fatigue resistance: Through the cross-linking reaction of methyl hydrogen silicone oil and platinum complex, a stable three-dimensional network structure is formed. Combined with the reinforcing effect of fumed silica, the elasticity of the fabric can reach more than 500%. It quickly returns to its original shape after the external force is released. It does not deform or loosen after multiple stretching and 1000 machine washings. Its fatigue resistance far exceeds that of traditional fabrics.

[0030] 3. Lightweight and anti-fraying: The use of thin mesh base fabric and multi-round thin coating process significantly reduces the weight of the fabric, achieving lightweighting; at the same time, the self-made thickener enhances the bonding force between the polymer and the base fabric, effectively fixing the edge fibers of cotton, modal and other base fabrics, and completely solving the problem of edge fraying.

[0031] 4. High design flexibility: By adjusting parameters such as the shape of the knitted fabric eyelets, the number of coating cycles, and the frame shape, a variety of patterns and colors can be designed, taking into account both the decorative appearance and the visual effect, and meeting the aesthetic needs of products such as bras and swimwear.

[0032] 5. Strong adaptability to various application scenarios: It can replace metal underwires (bras), traditional elastic bands (waistbands of underwear) and sewing processes. It is suitable for a variety of intimate apparel such as bras, sports bras, and yoga pants. At the same time, its elasticity and support can be extended to the field of sports protective gear, making it widely applicable. Detailed Implementation

[0033] The technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] The present invention provides the following embodiments, which are respectively used for the application of two types of clothing fabrics;

[0035] Example 1: Composite fabric for Tefula bra

[0036] Raw material ratio (weight percentage): 65% vinyl-terminated polydimethylsiloxane, 6% methyl hydrogen silicone oil, 0.001% platinum complex, 23% fumed silica, and 4% homemade tackifier.

[0037] Preparation steps:

[0038] 1000 mesh (high mesh count) wire mesh with an opening rate of 30% is selected to weave a 0.5mm thick breathable mesh fabric;

[0039] The woven fabric is shaped into a diamond-shaped sheet, and then flattened and shaped under a tension of 50 pounds using a CNC tension expansion stretching machine. A square aluminum alloy frame with a width of 20mm, a height of 35mm, and a thickness of 1mm is used. The woven fabric is then fixed to the frame through alignment, fixing, and welding processes.

[0040] The bidirectional alignment CNC clamps fix the mesh, the CNC screws adjust the smooth operation, the upper and lower interactive platforms press down for calibration, and the four-station positioning system and infrared sensing device adjust the corner balance, with the offset controlled within 0.1mm.

[0041] Modified polydimethylsiloxane polymer is used, and it is coated by a U-shaped rubber pressing device with a hardness of 50. A flexible touch sensor lifts the upper pressure plate to form the first film. The octopus device is then transferred to the curing device, where 50 intelligent heating corrugated heating tubes directly heat the material, and it is cured at 120°C for 3 minutes.

[0042] Repeat steps 3-4, for a total of 8 times;

[0043] A skin-friendly layer is coated with a specially modified polydimethylsiloxane polymer. The positioning, calibration, and coating are repeated, and the product is cured at 120°C for 5 minutes to obtain the finished product.

[0044] Product performance: 550% elasticity, no deformation after 50 machine washes, skin-friendly and non-adhesive, can replace metal wire rings to provide strong support, good coverage of underarm breasts, and no unraveling at the edges of the base fabric.

[0045] Example 2: Composite fabric for Tefula trousers

[0046] Raw material ratio (by weight percentage): 58% vinyl-terminated polydimethylsiloxane, 8% methyl hydrogen silicone oil, 0.01% platinum complex, 26% fumed silica, and 5% homemade tackifier.

[0047] Preparation steps:

[0048] 180-mesh (low mesh count) steel mesh is selected, with an opening rate of 40%, and woven into a 0.3mm thick breathable mesh fabric;

[0049] The woven fabric is shaped into a sheet-like object with round holes. A CNC tension expansion stretching machine flattens and shapes it under a tension of 30 pounds, and it is fixed with a round aluminum frame with a width of 25mm, a height of 45mm, and a thickness of 2mm.

[0050] The positioning calibration method is the same as step 3 of Example 1;

[0051] It uses a modified polydimethylsiloxane polymer, coated with an O-ring rubber extrusion device with a hardness of 30, directly heated by 80 intelligent heating corrugated heating tubes, and cured at 110℃ for 2 minutes.

[0052] Repeat steps 3-4, cycling 5 times;

[0053] After the skin-friendly layer is coated, it is cured at 110℃ for 4 minutes to obtain the finished product.

[0054] Product performance: Moderate elasticity, fits the waistband and leg area of ​​the pants, replaces traditional elastic without leaving marks, is skin-friendly and smooth, does not loosen after multiple wears and washes, and the edges of the base fabric do not come apart.

[0055] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A Texora modified polymer composite textile, article, characterized in that, The textile base cloth is a fixed mesh structure breathable knitted fabric; The textile base cloth is formed with multiple layers of modified polydimethylsiloxane layers made of a modified polydimethylsiloxane polymer composed of the following raw materials in percentage by weight: vinyl-terminated polydimethylsiloxane 55-75%, methyl hydrogen-containing silicone oil 3-9%, platinum complex 0.0001-0.2%, fumed silica 18-28%, and self-made tackifier 3-5%.

2. A TexLan modified polymer composite textile, article according to claim 1, characterized in that, The shape of the holes of the textile base cloth is selected from one or more combinations of square, diamond, arc, circle, trapezoid, and triangle.

3. The Textronics modified polymeric composite textile, article of claim 1, wherein, The knitted fabric of the textile base cloth has a mesh count ranging from 50 to 3000.

4. A method for preparing a Texora modified polymer composite textile, article, for use in the method for preparing a Texora modified polymer composite textile, article of any one of claims 1-3, characterized in that, The steps include: Step S1, preparing a mesh structure breathable knitted fabric: selecting a silk screen or steel mesh with different opening degrees, opening rates, and mesh counts of 50-3000, and knitting a mesh structure breathable knitted fabric with different thicknesses; Step S2, knitted fabric shaping and frame fixing: the mesh knitted fabric is fixed into a sheet-shaped object with a preset hole shape, and is leveled and shaped under a tension of 10-200 pounds by a numerical control tension expansion stretcher. The sheet-shaped knitted fabric is fixed on the frame through the processes of alignment, fixing, edge locking, edge grinding, lamination, and welding. Step S3, precise positioning and horizontal calibration: the fixed knitted fabric sheet is fixed in a horizontal position by a two-way alignment numerical control clamp, and is adjusted by numerical control screws to achieve smooth operation. The upper and lower interactive platforms are pressed in a rhythm, and the four-station positioning system and infrared sensing device are used to calibrate the balance and intensity, control the offset and trace elements, and ensure the optimal positioning error. Step S4, first round of permeation coating and curing: a modified polydimethylsiloxane polymer is used as the coating material. The liquid polymer is evenly coated on the lower pressing plate by a rubber pushing device, penetrates through the breathable holes of the knitted fabric to the surface of the textile base cloth, and is lifted by a flexible touch sensing device to form a first layer of film. Then, the base cloth is moved to the curing device by an octopus automatic device, and is cured and formed under the direct action of 10-200 intelligent heating corrugated heating pipes. Step S5, multiple coating and curing cycles: the processes of steps 3-4 are repeated 2-100 times until the desired fabric function is achieved. Step S6, skin-friendly layer coating and final curing: a special modified polydimethylsiloxane polymer is used as the skin-friendly layer material. The positioning and calibration process in step 3 and the coating method in step 4 are repeated to form the last layer of skin-friendly film. After treatment by the curing device, the finished composite textile fabric is obtained.