An integrally formed flexible pressure-controlled temperature-regulated sound-absorbing textile and a method of manufacturing the same

Abstract

This invention discloses a one-piece molded flexible pressure-relieving and temperature-controlled sound-absorbing textile and its preparation method. The temperature-controlled sound-absorbing textile includes a temperature-controlled pressure-relieving layer, which consists of a face jacquard layer, a middle three-phase composite layer, and a backing connecting layer from top to bottom. The middle three-phase composite layer includes polyester elastic bulky yarn; carbon fiber forming a closed circuit; and silicone tubing connected end to end in a loop shape. The polyester elastic bulky yarn creates an air layer; the carbon fiber acts as a heat source for electric heating and is equipped with a temperature sensor; the silicone tubing contains 50% air and 50% phase-change PCM emulsion. The PCM emulsion undergoes a phase change at around 28-35℃, releasing and absorbing heat, thus achieving energy-saving temperature control. It has the special effects of multi-functional sound absorption, three-dimensional pressure relief, temperature control, and energy saving, and can be used in the fields of residential walls, pillows, and aerospace.

Description

Technical Field

[0001] This invention relates to a one-piece molded flexible pressure-relieving temperature-controlled sound-absorbing textile and its preparation method, and relates to the field of textile engineering technology. Background Technology

[0002] Phase change materials (PCMs), as a sustainable material, exhibit heat absorption or release when changing the phase of a material. Their advantages, such as low pollution and sustainable use, align with current global environmental governance themes, making them an important component of renewable energy technologies and widely used in various fields. In the textile industry, directly applying formulated PCM emulsions to textiles can easily affect their feel and comfort. Carbon fiber is also being developed with increasingly diverse properties; due to its safe heat dissipation properties, it is widely incorporated into clothing. Three-dimensional knitted fabrics, possessing the characteristics of porous materials, show promising potential for sound absorption and insulation, making them suitable for various architectural applications in a society with severe noise pollution problems.

[0003] The problem to be solved is how to use carbon fiber and phase change materials to prepare a textile with temperature control and sound absorption to address the issues of safe heating and insulation as well as noise pollution. Summary of the Invention

[0004] The purpose of this invention is to provide a one-piece molded flexible pressure-reducing temperature-controlled sound-absorbing textile and its preparation method, which provides a textile that absorbs sound and reduces noise, is highly energy-efficient, and provides sustainable heat preservation.

[0005] To solve the above-mentioned technical problems, the objective of this invention is achieved as follows:

[0006] The present invention relates to a one-piece molded flexible pressure-relieving and temperature-controlled sound-absorbing textile, comprising a temperature-controlled and pressure-relieving layer; wherein, the temperature-controlled and pressure-relieving layer comprises:

[0007] Facial jacquard layer;

[0008] The intermediate three-phase composite layer is located between the jacquard layer and the back support connecting layer;

[0009] The back support connecting layer is supported at the bottom of the face jacquard layer and the intermediate three-phase composite layer.

[0010] Preferably, the intermediate three-phase composite layer comprises:

[0011] Polyester elastic bulky yarn fills the temperature-controlled and pressure-relieving layer;

[0012] Carbon fibers form a closed circuit in the temperature-controlled and pressure-reducing layer;

[0013] The silicone tubing is woven in one piece and connected end to end in a loop shape.

[0014] Preferably, the polyester elastic bulk yarn has a fineness of 900D or higher, a porosity of 80-90%, and a volume fraction of 40%; it contains still air inside, forming an air layer.

[0015] The carbon fiber forms a closed-loop heating structure within the temperature-controlled and pressure-reducing layer, and is equipped with a temperature sensor. Heating begins when the temperature is below 18°C ​​and stops when the temperature reaches 28-35°C.

[0016] The silicone hose contains 50% air and 50% phase change PCM emulsion. The PCM emulsion undergoes a phase change at 28-35℃, releasing and absorbing heat to control the temperature.

[0017] Preferably, the carbon fiber is graphene-modified carbon fiber.

[0018] Preferably, the phase change PCM emulsion is a T35 phase change PCM emulsion, which is made by mixing phase change paraffin OP28E and polyacrylate MW-2000.

[0019] Preferably, the silicone hose is a silicone rubber tube with an outer diameter of 1 mm and an inner diameter of 0.5 mm.

[0020] Preferably, the temperature sensor has an accuracy of ±1% at 25°C, a range of humidity from 5%RH to 95%RH, and a temperature range from -20°C to 60°C; and a response time between 0.5s and 1s.

[0021] The present invention relates to a method for preparing a one-piece molded flexible pressure-relieving temperature-controlled sound-absorbing textile, comprising:

[0022] We provide face jacquard layer yarn, back support connecting layer yarn, polyester elastic bulky yarn, carbon fiber, silicone tubing, and temperature sensor.

[0023] The face jacquard layer is woven on the upper needle bed and the back support connecting layer is woven on the lower needle bed using an integrated knitting method;

[0024] Polyester elastic bulky yarn and carbon fiber are interwoven into the upper and lower needle beds by a yarn guide;

[0025] The silicone tube is guided by a guide device and fed into the fabric using intarsia guidance technology.

[0026] Preferably, the guiding device includes a yarn nozzle and an oiling device; the yarn nozzle is provided with soft bristles, and the oiling device and the yarn nozzle are controlled by a motor.

[0027] The beneficial effects of the present invention are as follows: The present invention relates to an integrally molded flexible pressure-relieving temperature-controlled sound-absorbing textile and its preparation method. The intermediate three-phase composite layer uses carbon fiber with safe heating, polyester elastic bulky yarn and silicone tubing with phase change material inside. Compared with the prior art, it has the advantages of efficient energy utilization, health and environmental protection, sustainable development, pressure-relieving heat preservation, comfortable use and sound absorption and noise reduction. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the flexible pressure-relieving temperature-controlled sound-absorbing textile involved in this invention.

[0029] Figure 2 This is a schematic diagram of a heating and temperature control system;

[0030] Figure 3 yes Figure 2 Cross-sectional view;

[0031] Figure 4 This is a schematic diagram of the guiding device;

[0032] The markings in the diagram are explained as follows: 1 is the face jacquard layer, 2 is the back support connecting layer, 3 is carbon fiber, 4 is polyester elastic bulky yarn, 5 is silicone tubing, 6 is T35 phase change emulsion, 7 is motor device, 8 is lubrication device, 9 is sand nozzle, and 10 is soft wool yarn guide. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of 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 embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] The present invention relates to a one-piece molded flexible pressure-relieving and temperature-controlled sound-absorbing textile, comprising: a temperature-controlled and pressure-relieving layer. The temperature-controlled and pressure-relieving layer comprises: a face jacquard layer; an intermediate three-phase composite layer located between the jacquard layer and the back support connecting layer; and a back support connecting layer supported at the bottom of the face jacquard layer and the intermediate three-phase composite layer.

[0036] The intermediate three-phase composite layer includes:

[0037] Polyester elastic bulky yarn fills the temperature-controlled and pressure-relieving layer;

[0038] Carbon fibers form a closed circuit in the temperature-controlled and pressure-reducing layer;

[0039] The silicone tubing is woven in one piece and connected end to end in a loop shape.

[0040] It is worth further explaining that the fineness of the polyester elastic bulky yarn is above 900D, the porosity is 80-90%, and the volume fraction is about 40%; it contains still air inside, forming an air layer; the surface density of the yarn in the face jacquard layer and the yarn in the back support connecting layer is relatively large, so that the pressure-relieving layer not only reduces pressure, but also forms a porous sound-absorbing structure with certain sound absorption and noise reduction performance.

[0041] The carbon fiber forms a closed-loop heating structure within the temperature-controlled and pressure-reducing layer, equipped with a temperature sensor. Heating begins when the temperature is below 18°C ​​and stops when it reaches 28-35°C. The silicone hose contains 50% air and 50% phase-change PCM emulsion. The PCM emulsion undergoes a phase change at around 28-35°C, releasing and absorbing heat to control the temperature.

[0042] Furthermore, the phase change PCM emulsion is a T35 phase change PCM emulsion, which is made by mixing phase change paraffin OP28E and polyacrylate MW-2000.

[0043] The carbon fiber is graphene-modified carbon fiber, the phase change material is a phase change emulsion with a phase change range of 28-35℃, and the silicone tubing is a silicone rubber tube with an outer diameter of 1mm and an inner diameter of 0.5mm. The loop-shaped silicone tubing contains the phase change emulsion, allowing it to circulate. The carbon fiber acts as a heat source, positioned close to the outside of the silicone tubing. When the ambient temperature rises to 35℃, the phase change material inside the silicone tube begins to undergo a phase change, absorbing heat from the surrounding environment. The carbon fiber, sensing the temperature, is heated by an internal heating element. The heated carbon fiber transfers heat to the silicone tube, maintaining the phase change material in a liquid phase and keeping it in an endothermic state. When the temperature drops below 28℃, the carbon fiber stops heating, and the phase change material begins to release the absorbed heat, achieving passive temperature regulation for the temperature-controlled textile.

[0044] Furthermore, the temperature sensor has an accuracy of ±1% at 25°C, a range of humidity from 5%RH to 95%RH, and a temperature range from -20°C to 60°C; the response time is between 0.5s and 1s.

[0045] Based on the above-mentioned one-piece molded flexible pressure-relieving temperature-controlled sound-absorbing textile, the present invention also provides a method for preparing the one-piece molded flexible pressure-relieving temperature-controlled sound-absorbing textile, comprising:

[0046] We provide face jacquard layer yarn, back support connecting layer yarn, polyester elastic bulky yarn, carbon fiber, silicone tubing, and temperature sensor.

[0047] The face jacquard layer is woven on the upper needle bed and the back support connecting layer is woven on the lower needle bed using an integrated knitting method.

[0048] Polyester elastic bulky yarn and carbon fiber are interwoven into the upper and lower needle beds by a yarn guide.

[0049] The silicone tube is guided by a separate guide device from other yarn guides and fed into the weave using intarsia guidance technology.

[0050] Furthermore, the guiding device includes a yarn nozzle and an oiling device; the yarn nozzle is provided with soft bristles, and the oiling device is controlled by a motor.

[0051] A method for preparing a bulk-molded, flexible, pressure-relieving, temperature-controlled, and sound-absorbing textile includes the following steps:

[0052] Step 1: Inject the prepared T35 phase change emulsion 6 into the silicone tube 5 and temporarily seal both openings.

[0053] Step 2: A carbon fiber heating wire 3 is installed on the outside of the silicone hose 5, and the carbon fiber heating wire 3 is connected to the silicone hose 5; the carbon fiber acts as a heat source and is heated by electricity, and a temperature sensor is installed in the finished product. The carbon fiber heating wire 3 starts heating when the temperature is below 20°C and stops heating when it reaches 38°C; the phase change emulsion 6 inside the silicone hose melts after reaching the phase change point of 35°C and continues to release heat, at which point the phase change emulsion plays a heat preservation role until the temperature reaches 20°C.

[0054] Step 3: Polyester elastic bulky yarn and carbon fiber are pulled by the yarn guide on the flat knitting machine and fixed by the connecting line between the face jacquard layer and the back support connecting layer; the silicone hose 5 is fed into the weaving hole by the intelligent spout using inlay guidance technology; the spout 9 has soft bristles 10 and is equipped with a lubrication device 8, controlled by a separate motor 7, and can move on the flat knitting machine guide rod to guide the silicone hose 5 to be passively bent when needed, so that the ends are connected and laid more evenly in the temperature-controlled pressure layer; the silicone hose 5 is fixed by the connecting line between the face jacquard layer and the back support connecting layer during the weaving process.

[0055] Example 1

[0056] 900D polyester elastic bulky yarn and graphene-modified carbon fiber (model: Toray T300) are passed through a computerized flat knitting machine (model: LXA-352, China) with a tension controller. The yarn is pulled and fed into the knitting opening by the yarn guide on the flat knitting machine, and fixed by the connecting loops of the upper and lower layers of fabric.

[0057] Paraffin wax (specification: OP28E) was dispersed in the emulsion as the core material, and polyacrylate (specification: MW-2000) was used as the wall material. The two were mixed and stirred at a volume ratio of 2:1 to prepare a phase change emulsion, which was then injected into a silicone tube.

[0058] Pass the silicone tubing containing T35 phase change material through... Figure 4The intelligent nozzle shown participates in the weaving process through the combing and pulling of the soft bristles and oiling device on the nozzle. During weaving, it is fixed by the connecting lines between the face jacquard layer and the back support layer. The nozzle is motor-controlled and can move on the flat knitting machine guide rod, guiding the silicone hose to bend passively when needed. At this point, the integrated weaving is complete. Due to its excellent plasticity, the polyester elastic bulky yarn expands and inflates within the upper and lower fabric layers, wrapping around the carbon fiber and silicone hose. Its porous and loose structure provides excellent sound absorption and noise reduction performance. Simultaneously, its fluffy yarn structure gives it a pressure-regulating and temperature-controlling effect.

[0059] When the ambient temperature rises above the phase change temperature (35°C) of the phase change material (PCM), the PCM inside the silicone tube begins to change from a solid to a liquid state, absorbing heat from the surrounding environment. The temperature-controlled pressure-reducing layer's thermistor film sensor, with a temperature range of -20°C to ±60°C and an accuracy of ±1%, senses the ambient temperature change at 25°C. The connected built-in carbon fiber heating element then begins heating, conducting heat to the PCM inside the silicone tube. This heating of the carbon fiber layer maintains the PCM in a liquid phase, allowing it to continue absorbing heat and achieving active temperature regulation. When the ambient temperature drops below the PCM's phase change temperature, the intelligent control system stops heating the carbon fiber, and the PCM begins to release the absorbed heat, achieving passive temperature regulation.

[0060] By utilizing the heat absorption and release properties of phase change materials, the operating time of indoor air conditioning or heating systems can be reduced, providing active and passive temperature regulation of the indoor environment, reducing energy consumption, and enabling users to achieve a personalized comfort experience.

[0061] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A method for preparing a one-piece molded flexible pressure-relieving temperature-controlled sound-absorbing textile, characterized in that, The textile includes a temperature-regulating and pressure-reducing layer; wherein the temperature-regulating and pressure-reducing layer includes: Facial jacquard layer; The intermediate three-phase composite layer is located between the jacquard layer and the back support connecting layer; The back support connecting layer is supported at the bottom of the face jacquard layer and the intermediate three-phase composite layer; The intermediate three-phase composite layer includes: Polyester elastic bulky yarn fills the temperature-controlled and pressure-relieving layer; Carbon fibers form a closed circuit in the temperature-controlled and pressure-reducing layer; The silicone tubing is woven in as one piece, with the ends connected in a loop shape; The silicone tube contains 50% air and 50% phase change PCM emulsion. The PCM emulsion undergoes a phase change at 28-35℃, releasing and absorbing heat to control the temperature. The carbon fiber forms a closed-loop heating structure within the temperature-controlled and pressure-reducing layer, and is equipped with a temperature sensor. Heating begins when the temperature is below 18°C ​​and stops when the temperature reaches 28-35°C. The preparation method includes: We provide face jacquard layer yarn, back support connecting layer yarn, polyester elastic bulky yarn, carbon fiber, silicone tubing, and temperature sensor. The face jacquard layer is woven on the upper needle bed and the back support connecting layer is woven on the lower needle bed using an integrated knitting method; Polyester elastic bulky yarn and carbon fiber are interwoven into the upper and lower needle beds by a yarn guide; The silicone tubing is guided by a guide device and fed into the fabric using intarsia guidance technology; The guiding device includes a yarn nozzle and an oiling device; the yarn nozzle is provided with soft bristles, and the oiling device and the yarn nozzle are moved on the flat knitting machine guide rod by a motor.

2. The method for preparing an integrally molded flexible pressure-relieving temperature-controlled sound-absorbing textile according to claim 1, characterized in that, The polyester elastic bulk yarn has a fineness of 900D or higher, a porosity of 80-90%, and a volume fraction of 40%; it contains still air inside, forming an air layer.

3. The method for preparing an integrally molded flexible pressure-relieving temperature-controlled sound-absorbing textile according to claim 1, characterized in that, The carbon fiber is graphene-modified carbon fiber.

4. The method for preparing an integrally molded flexible pressure-relieving temperature-controlled sound-absorbing textile according to claim 1, characterized in that, The phase change PCM emulsion is T35 phase change PCM emulsion, which is made by mixing phase change paraffin OP28E and polyacrylate MW-2000.

5. The method for preparing an integrally molded flexible pressure-relieving temperature-controlled sound-absorbing textile according to claim 1, characterized in that, The silicone hose is a silicone rubber tube with an outer diameter of 1 mm and an inner diameter of 0.5 mm.

6. The method for preparing an integrally molded flexible pressure-relieving temperature-controlled sound-absorbing textile according to claim 2, characterized in that, The temperature sensor has an accuracy of ±1% at 25℃, a range of humidity from 5%RH to 95%RH, and a temperature range from -20℃ to 60℃; the response time is between 0.5s and 1s.

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