A preparation process of polyester burr cloth for insole

Abstract

The present application relates to the technical field of automobile interior processing, in particular to a preparation process of polyester burr fabric for foot mat. The preparation process of polyester burr fabric for foot mat comprises the following steps: preparation of BC-SiO2 composite aerogel; antibacterial treatment of polyester fabric; preparation of antibacterial and heat-insulating polyester fabric; burr processing of antibacterial and heat-insulating polyester fabric. The present application firstly performs antibacterial treatment on the polyester fabric, then coats a layer of BC-SiO2 composite aerogel coating agent on the surface of the obtained antibacterial polyester fabric and performs baking, so that the antibacterial components can be better preserved in the interior of the polyester fabric, the antibacterial components can continuously and stably play the antibacterial role, and the generation of peculiar smell caused by the massive reproduction of bacteria is prevented, the BC-SiO2 composite aerogel coating agent can also improve the heat-insulating capacity of the polyester burr fabric for foot mat, and reduce the aging speed of the polyester burr fabric for foot mat and the host carpet in high-temperature environment such as summer.

Description

Technical Field

[0001] This invention relates to the field of automotive interior processing technology, specifically a process for preparing polyester burred fabric for floor mats. Background Technology

[0002] Rapid economic development has greatly improved people's living standards. As a convenient means of transportation, cars play an irreplaceable role in people's daily travel. This has led to more and more people paying special attention to the interior of their cars, among which car floor mats are an indispensable part.

[0003] Car floor mats are environmentally friendly automotive interior parts with five main functions: water absorption, dust absorption, stain removal, sound insulation, and protection of the main carpet. They can effectively absorb moisture and dirt from the soles of people's shoes, preventing slippage between the soles and the clutch, brake, and accelerator pedals. Currently, car floor mats are mainly made of synthetic fibers, linen, PVC, and rubber. Synthetic fiber floor mats are usually used as original equipment materials by car manufacturers and have good resistance to moths and corrosion.

[0004] Polyester fiber, also known as polyester, is the most widely used fiber among chemical fiber materials. It is strong, resistant to most chemicals, dries quickly, and has properties such as shrinkage resistance, tensile strength, abrasion resistance, and wrinkle resistance. Polyester floor mats can meet the basic requirements of car floor mats well. However, its heat insulation performance is not good. When the temperature inside the car is high in hot seasons, it cannot effectively insulate and protect the main carpet. The aging rate of both the main carpet and the polyester floor mat will be accelerated. In addition, the antibacterial effect of polyester floor mats is generally poor. When people do not clean them in time, the impurities brought by the soles of their shoes can easily breed bacteria, which can easily cause odors in the car and affect people's health.

[0005] To address the aforementioned technological challenges, this invention presents a process for preparing polyester burred fabric for foot pads that significantly improves the product's heat insulation capabilities and provides it with stable antibacterial properties. Summary of the Invention

[0006] To address the aforementioned technical deficiencies, this invention presents a process for preparing polyester burred fabric for foot pads that can significantly improve the product's heat insulation capabilities and give it stable antibacterial properties.

[0007] A process for preparing polyester burred fabric for foot pads includes the following steps:

[0008] S1: Preparation of BC-SiO2 composite aerogel

[0009] Bacterial cellulose membranes were cut into small pieces and purified by soaking in KOH aqueous solution. After washing, purified BC was obtained. The purified BC was physically broken and treated with acetone, and then dispersed in deionized water to obtain a BC suspension. The BC suspension was added to the process of preparing SiO2 aerogel by tetraethyl orthosilicate via sol-gel method using dilute hydrochloric acid and dilute ammonia as catalysts. After gelation, a gel mixture was obtained. The gel mixture was then aged, solvent replaced, surface modified and dried to obtain BC-SiO2 composite aerogel.

[0010] S2: Antibacterial treatment of polyester fabrics

[0011] After washing and drying, a cleaned polyester fabric is obtained. Nano TiO2 powder is ultrasonically dispersed in deionized water to obtain a TiO2 suspension. The cleaned polyester fabric is immersed in the TiO2 suspension and subjected to water bath shaking. After drying, a polyester fabric with TiO2 attached is obtained. Ag2Se powder, sodium polymethacrylate and deionized water are mixed and ultrasonically dispersed to obtain an Ag2Se-PMANa suspension. The polyester fabric with TiO2 attached is immersed in the Ag2Se-PMANa suspension and stirred. After drying, an antibacterial polyester fabric is obtained.

[0012] S3: Preparation of antibacterial and heat-insulating polyester fabrics

[0013] The BC-SiO2 composite aerogel was pulverized and mixed with an ethanol solution and then ultrasonically dispersed to obtain a BC-SiO2 composite aerogel dispersion. Aqueous polyurethane and hydroxyethyl cellulose were added to the BC-SiO2 composite aerogel dispersion and ultrasonic treatment was continued to obtain a BC-SiO2 composite aerogel coating agent. The BC-SiO2 composite aerogel coating agent was coated on the surface of antibacterial polyester fabric using a bar coater. After drying and baking, an antibacterial and heat-insulating polyester fabric was obtained.

[0014] S4: Burr treatment of antibacterial and heat-insulating polyester fabrics

[0015] The antibacterial and heat-insulating polyester fabric is placed on the table of the full-width weft-insulating warp knitting machine Rs3MSU-V, and tied tightly with binding yarn. Then, loops are woven with loop yarn to obtain loop antibacterial and heat-insulating polyester fabric. The loop tops of the loop side of the loop antibacterial and heat-insulating polyester fabric are shaped, sheared and singed to obtain polyester burred fabric for foot pads.

[0016] Furthermore, the preparation of step S1BC-SiO2 composite aerogel includes the following steps:

[0017] S1.1: Take 4-6 parts by weight of bacterial cellulose membrane and cut it into small pieces in a membrane cutting machine. Soak it in a KOH aqueous solution with a concentration of 1-1.5 mol / L for 8-10 hours, filter it out, and rinse it with deionized water 3-5 times to obtain purified BC.

[0018] S1.2: Mix the purified BC obtained in step S1.1 with 6-8 parts by weight of deionized water in a high-speed stirrer, adjust the stirring speed of the high-speed stirrer to 8000-10000 rpm, stir for 25-30 min, then add 4-6 parts by weight of acetone, let stand for 20-24 h, filter to obtain solid substance, wash the solid substance with ethanol 2-3 times, then wash with deionized water 3-4 times, and then mix with 6-8 parts by weight of deionized water to obtain BC suspension;

[0019] S1.3: Place 8-10 parts by weight of tetraethyl orthosilicate, 10-12 parts by weight of deionized water and 28-32 parts by weight of anhydrous ethanol in a container and stir until homogeneous. Add dilute hydrochloric acid to adjust the pH to 2-3. Adjust the stirring speed of the magnetic stirrer to 150-200 rpm and stir for 1.5-2 hours to obtain a mixed solution. Then add the BC suspension prepared in step S1.2 and dilute ammonia to the mixed solution to make the pH of the mixed solution 5-7. After stirring until homogeneous, let it stand until gelation to obtain a gel mixture.

[0020] S1.4: Take 8-10 parts by weight of the gel mixture and immerse it in anhydrous ethanol. Heat it in a water bath at 50-55℃ for 10-12 hours to obtain an aged gel. Immerse the aged gel in anhydrous ethanol for 2-4 hours, then add 12-15 parts by weight of n-hexane and let it stand for 3-5 hours. Then immerse it in a surface modification solution for 6-8 hours, and then place it in a drying oven. Adjust the temperature to 75-80℃ and dry for 1.5-2 hours. Then raise the temperature to 95-100℃ and dry for 2-3 hours. Then raise the temperature to 110-120℃ and dry for 1.5-2 hours to obtain BC-SiO2 composite aerogel.

[0021] Furthermore, the antibacterial treatment of the polyester fabric in step S2 includes the following steps:

[0022] S2.1: Soak a 10cm×10cm polyester fabric in detergent, adjust the temperature to 35-40℃, and then use a glass rod to continuously turn the polyester fabric over. After washing for 25-30 minutes, rinse with deionized water 3-4 times, and then place it in an oven to dry at 60-65℃ for 2-3 hours to obtain a cleaned polyester fabric.

[0023] S2.2: Mix 0.02-0.03 parts by weight of nano TiO2 powder and 8-12 parts by weight of deionized water in an ultrasonic disperser, adjust the ultrasonic frequency to 50-60KHz, and ultrasonically disperse for 25-30 minutes to obtain a TiO2 suspension. Soak the decontaminated polyester fabric in the TiO2 suspension and shake it in a water bath at 55-60℃ for 2-3 hours. Then place it in a forced-air drying oven and dry it at 60-65℃ for 1.5-2 hours to obtain a polyester fabric with TiO2 attached.

[0024] S2.3: Mix 0.06-0.08 parts by weight of Ag2Se powder, 0.08-0.1 parts by weight of sodium polymethacrylate and 10-12 parts by weight of deionized water in an ultrasonic disperser, adjust the ultrasonic frequency to 60-80KHz, and ultrasonically disperse for 30-35min to obtain Ag2Se-PMANa suspension. Soak the polyester fabric with TiO2 attached in the Ag2Se-PMANa suspension, stir for 35-40min, and then place it in an oven to dry at 55-60℃ for 2-3h to obtain antibacterial polyester fabric.

[0025] Furthermore, the preparation of the antibacterial and heat-insulating polyester fabric in step S3 includes the following steps:

[0026] S3.1: The BC-SiO2 composite aerogel obtained in step S1.4 is crushed in a pulverizer, and then mixed with ethanol solution at a mass ratio of 1:(35-40) and placed in an ultrasonic disperser. The ultrasonic frequency is adjusted to 20-30KHz and ultrasonically dispersed for 25-30min to obtain BC-SiO2 composite aerogel dispersion.

[0027] S3.2: Add 2-3 parts by weight of waterborne polyurethane and 0.1-0.2 parts by weight of hydroxyethyl cellulose to the BC-SiO2 composite aerogel dispersion obtained in step S3.1. After stirring evenly, continue to sonicate at an ultrasonic frequency of 20-30KHz for 25-30 minutes to obtain the BC-SiO2 composite aerogel coating agent.

[0028] S3.3: Place the antibacterial polyester fabric obtained in step S2.3 on the coating platform of the bar coater, and then pour the BC-SiO2 composite aerogel coating agent obtained in step S3.2 into the coating tank of the bar coater, setting the sizing amount to 30-35 g / m². 2The bar coating machine is started to evenly coat the BC-SiO2 composite aerogel coating on the front side of the antibacterial polyester fabric. It is then dried at 80-85℃ for 5-7 minutes. The bar coating machine is then adjusted to evenly coat the BC-SiO2 composite aerogel coating on the back side of the antibacterial polyester fabric. It is then dried at 80-85℃ for 5-7 minutes and then placed in the drying tunnel to be baked at 145-150℃ for 2-3 minutes to obtain the antibacterial and heat-insulating polyester fabric.

[0029] Further, step S4, the burr removal process of the antibacterial and heat-insulating polyester fabric, includes the following steps:

[0030] S4.1: Place the antibacterial and heat-insulating polyester fabric on the machine table of the full-width weft-insulating warp knitting machine Rs3MSU-V, tie the antibacterial and heat-insulating polyester fabric tightly with binding yarn, and then puncture loops on the front side of the antibacterial and heat-insulating polyester fabric with loop radius of 4-5mm. The loop yarn material is monofilament or multifilament chemical fiber to obtain loop antibacterial and heat-insulating polyester fabric.

[0031] S4.2: The top of the loops on the loop side of the antibacterial and heat-insulating polyester fabric is shaped, sheared, and singed to obtain polyester burred fabric for foot pads.

[0032] Furthermore, the size of the small piece in step S1.1 is 2×2×0.5cm.

[0033] Furthermore, in step S1.3, the gelation is manifested by the mixed solution in the container not flowing when tilted at 45°.

[0034] Furthermore, the surface modification liquid in step S1.4 is prepared by mixing trimethylchlorosilane and n-hexane in a volume ratio of 1:(10-12).

[0035] Further, the detergent in step S2.1 is prepared by mixing ethanol, acetone and deionized water in a mass ratio of 1:(1-1.5):(1-2).

[0036] Furthermore, the volume fraction of the ethanol solution in step S3.1 is 45-50%.

[0037] The beneficial effects are: 1. This invention first treats polyester fabric with antibacterial agents, then coats the surface of the resulting antibacterial polyester fabric with a layer of BC-SiO2 composite aerogel coating agent and calcines it, so that the antibacterial components can be better preserved inside the polyester fabric, so that the antibacterial components can play an antibacterial role continuously and stably, preventing bacteria from multiplying and producing odors. The BC-SiO2 composite aerogel coating agent can also improve the heat insulation ability of the polyester burr cloth used for foot pads and reduce its aging speed with the main blanket in high-temperature environments such as summer.

[0038] 2. This invention prepares BC-SiO2 composite aerogel by adding BC suspension during the preparation of SiO2 aerogel using the sol-gel method of tetraethyl orthosilicate. BC interweaves with each other in the unique three-dimensional network structure of SiO2 aerogel to form a finer network structure. Simultaneously, due to the high degree of polymerization and crystallinity of BC, the porosity and inter-material bonding force of the BC-SiO2 composite aerogel are improved, thereby enhancing the thermal insulation and tensile strength of the BC-SiO2 composite aerogel. This improves the thermal insulation and tensile strength of the polyester burr fabric used in foot pads.

[0039] 3. This invention involves immersing polyester fabric in a TiO2 suspension and subjecting it to water bath agitation, thereby loading the surface of the polyester fabric with nano-TiO2. Then, the fabric is immersed in an Ag2Se-PMANa suspension, constructing an Ag2Se / TiO2 composite on the polyester fabric surface. This enhances the bactericidal ability during photosensitization. Simultaneously, some silver ions combine with PMANa to form an Ag-PMANa polymer, allowing the fabric to function even in the absence of sunlight. + The polyester burred fabric used in foot pads provides continuous antibacterial protection, significantly enhancing its antibacterial capabilities. Attached Figure Description

[0040] Figure 1 This is a process flow diagram of a polyester burred fabric for foot pads used in an embodiment of the present invention. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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. Example 1

[0042] A manufacturing process for polyester burred fabric used in foot pads, such as... Figure 1 As shown, it includes the following steps:

[0043] S1: Preparation of BC-SiO2 composite aerogel

[0044] S1.1: Take 4 parts by weight of bacterial cellulose membrane and cut it into small pieces in a membrane cutting machine. The small pieces are 2×2×0.5cm in size. Soak them in a 1mol / L KOH aqueous solution for 8 hours, filter them out, and rinse them 3 times with deionized water to obtain purified BC.

[0045] S1.2: The purified BC obtained in step S1.1 is mixed with 6 parts by weight of deionized water and placed in a high-speed stirrer. The stirring speed of the high-speed stirrer is adjusted to 8000 rpm and stirred for 25 min. Then, 4 parts by weight of acetone is added. After standing for 20 h, the mixture is filtered to obtain a solid substance. The solid substance is washed twice with ethanol and then three times with deionized water. Then, it is mixed with 6 parts by weight of deionized water to obtain a BC suspension.

[0046] S1.3: Place 8 parts by weight of tetraethyl orthosilicate, 10 parts by weight of deionized water and 28 parts by weight of anhydrous ethanol in a container and stir evenly. Add dilute hydrochloric acid to adjust the pH to 2, adjust the stirring speed of the magnetic stirrer to 150 rpm, and stir for 1.5 h to obtain a mixed solution. Then add the BC suspension prepared in step S1.2 and dilute ammonia to the mixed solution to make the pH of the mixed solution 5. After stirring evenly, let it stand until gelation. Tilt the mixed solution in the container at 45° so that it does not flow to obtain a gel mixture.

[0047] S1.4: Take 8 parts by weight of the gel mixture and immerse it in anhydrous ethanol. Heat it in a water bath at 50°C for 10 hours to obtain an aged gel. Immerse the aged gel in anhydrous ethanol for 2 hours, then add 12 parts by weight of n-hexane and let it stand for 3 hours. Then immerse it in a surface modification solution prepared by trimethylchlorosilane and n-hexane at a volume ratio of 1:10 for 6 hours. Place it in a drying oven, adjust the temperature to 75°C, and dry for 1.5 hours. Then raise the temperature to 95°C and dry for 2 hours. Then raise the temperature to 110°C and dry for 1.5 hours to obtain BC-SiO2 composite aerogel. BC interweaves with each other in the unique three-dimensional network structure of SiO2 aerogel to form a finer network structure. At the same time, due to the high degree of polymerization and crystallinity of BC, the porosity and inter-material bonding force of BC-SiO2 composite aerogel are improved, thereby enhancing the thermal insulation and tensile strength of BC-SiO2 composite aerogel. The thermal insulation and tensile strength of the polyester burr cloth used in foot pads are improved.

[0048] S2: Antibacterial treatment of polyester fabrics

[0049] S2.1: Soak a 10cm×10cm polyester fabric in a detergent prepared by mixing ethanol, acetone and deionized water in a mass ratio of 1:1:1, adjust the temperature to 35℃, and then continuously turn the polyester fabric with a glass rod. After washing for 25 minutes, rinse it 3 times with deionized water, and then place it in an oven to dry at 60℃ for 2 hours to obtain a cleaned polyester fabric.

[0050] S2.2: Mix 0.02 parts by weight of nano TiO2 powder and 8 parts by weight of deionized water in an ultrasonic disperser, adjust the ultrasonic frequency to 50 kHz, and ultrasonically disperse for 25 min to obtain a TiO2 suspension. Soak the decontaminated polyester fabric in the TiO2 suspension and shake it in a water bath at 55°C for 2 h to load nano TiO2 onto the surface of the polyester fabric. Then place it in a forced-air drying oven and dry it at 60°C for 1.5 h to obtain a polyester fabric with TiO2 attached.

[0051] S2.3: Mix 0.06 parts by weight of Ag2Se powder, 0.08 parts by weight of sodium polymethacrylate, and 10 parts by weight of deionized water in an ultrasonic disperser. Adjust the ultrasonic frequency to 60 kHz and ultrasonically disperse for 30 min to obtain an Ag2Se-PMANa suspension. Immerse polyester fabric with TiO2 attached in the Ag2Se-PMANa suspension and stir for 35 min. This constructs an Ag2Se / TiO2 complex on the surface of the polyester fabric, enhancing its bactericidal ability during photosensitization. Simultaneously, some silver ions combine with PMANa to form an Ag-PMANa polymer, allowing the Ag2Se to be absorbed even in the absence of sunlight. + The antibacterial properties of the polyester burred fabric used for foot pads are greatly enhanced by continuous antibacterial treatment. The fabric is then placed in an oven and dried at 55°C for 2 hours to obtain antibacterial polyester fabric.

[0052] S3: Preparation of antibacterial and heat-insulating polyester fabrics

[0053] S3.1: The BC-SiO2 composite aerogel obtained in step S1.4 is crushed in a pulverizer, and then mixed with an ethanol solution with a volume fraction of 45% at a mass ratio of 1:35 and placed in an ultrasonic disperser. The ultrasonic frequency is adjusted to 20KHz and ultrasonically dispersed for 25min to obtain a BC-SiO2 composite aerogel dispersion.

[0054] S3.2: Add 2 parts by weight of waterborne polyurethane and 0.1 parts by weight of hydroxyethyl cellulose to the BC-SiO2 composite aerogel dispersion obtained in step S3.1. After stirring evenly, continue to sonicate at an ultrasonic frequency of 20KHz for 25 minutes to obtain the BC-SiO2 composite aerogel coating agent.

[0055] S3.3: Place the antibacterial polyester fabric obtained in step S2.3 on the coating platform of the bar coater, and then pour the BC-SiO2 composite aerogel coating agent obtained in step S3.2 into the coating tank of the bar coater, setting the sizing amount to 30g / m². 2The bar coating machine is started to evenly coat the front side of the antibacterial polyester fabric with BC-SiO2 composite aerogel coating. It is then dried at 80℃ for 5 minutes. The bar coating machine is then adjusted to evenly coat the back side of the antibacterial polyester fabric with BC-SiO2 composite aerogel coating. It is then dried at 80℃ for 5 minutes and then placed in the drying tunnel and baked at 150℃ for 2 minutes to obtain antibacterial and heat-insulating polyester fabric. This allows the antibacterial components to be better preserved inside the polyester fabric, enabling the antibacterial components to exert their antibacterial effect continuously and stably, preventing the large-scale reproduction of bacteria and the generation of odors. The BC-SiO2 composite aerogel coating can also improve the heat insulation ability of the polyester burr cloth used for foot pads and reduce its aging rate in high-temperature environments such as summer.

[0056] S4: Burr treatment of antibacterial and heat-insulating polyester fabrics

[0057] S4.1: Place the antibacterial and heat-insulating polyester fabric on the machine table of the full-width weft-insulating warp knitting machine Rs3MSU-V, tie the antibacterial and heat-insulating polyester fabric tightly with binding yarn, and then puncture loops on the front side of the antibacterial and heat-insulating polyester fabric with loop radius of 4mm. The loop yarn material is monofilament or multifilament chemical fiber to obtain loop antibacterial and heat-insulating polyester fabric.

[0058] S4.2: The top of the loops on the loop side of the antibacterial and heat-insulating polyester fabric is shaped, sheared, and singed to obtain polyester burred fabric for foot pads. Example 2

[0059] A manufacturing process for polyester burred fabric used in foot pads, such as... Figure 1 As shown, it includes the following steps:

[0060] S1: Preparation of BC-SiO2 composite aerogel

[0061] S1.1: Take 6 parts by weight of bacterial cellulose membrane and cut it into small pieces in a membrane cutting machine. The small pieces are 2×2×0.5cm in size. Soak them in a 1mol / L KOH aqueous solution for 8 hours, filter them out, and rinse them with deionized water 3 times to obtain purified BC.

[0062] S1.2: The purified BC obtained in step S1.1 is mixed with 8 parts by weight of deionized water and placed in a high-speed stirrer. The stirring speed of the high-speed stirrer is adjusted to 8000 rpm and stirred for 25 min. Then, 6 parts by weight of acetone is added. After standing for 20 h, the mixture is filtered to obtain a solid substance. The solid substance is washed twice with ethanol and then three times with deionized water. Then, it is mixed with 8 parts by weight of deionized water to obtain a BC suspension.

[0063] S1.3: Place 10 parts by weight of tetraethyl orthosilicate, 12 parts by weight of deionized water and 32 parts by weight of anhydrous ethanol in a container and stir until homogeneous. Add dilute hydrochloric acid to adjust the pH to 2, adjust the stirring speed of the magnetic stirrer to 150 rpm, and stir for 1.5 h to obtain a mixed solution. Then add the BC suspension prepared in step S1.2 and dilute ammonia to the mixed solution to make the pH of the mixed solution 5. After stirring until homogeneous, let it stand until gelation. Tilt the mixed solution in the container at 45° so that it does not flow to obtain a gel mixture.

[0064] S1.4: Take 10 parts by weight of the gel mixture and immerse it in anhydrous ethanol. Heat it in a water bath at 50°C for 10 hours to obtain an aged gel. Immerse the aged gel in anhydrous ethanol for 2 hours, then add 15 parts by weight of n-hexane and let it stand for 3 hours. Then immerse it in a surface modification solution prepared by trimethylchlorosilane and n-hexane at a volume ratio of 1:10 for 6 hours. Place it in a drying oven, adjust the temperature to 75°C, and dry for 1.5 hours. Then raise the temperature to 95°C and dry for 2 hours. Then raise the temperature to 110°C and dry for 1.5 hours to obtain BC-SiO2 composite aerogel. BC interweaves with each other in the unique three-dimensional network structure of SiO2 aerogel to form a finer network structure. At the same time, due to the high degree of polymerization and crystallinity of BC, the porosity and inter-material bonding force of BC-SiO2 composite aerogel are improved, thereby enhancing the thermal insulation and tensile strength of BC-SiO2 composite aerogel. The thermal insulation and tensile strength of the polyester burr cloth used in foot pads are improved.

[0065] S2: Antibacterial treatment of polyester fabrics

[0066] S2.1: Soak a 10cm×10cm polyester fabric in a detergent prepared by mixing ethanol, acetone and deionized water in a mass ratio of 1:1.5:2. Adjust the temperature to 35℃, and then continuously turn the polyester fabric with a glass rod. After washing for 25 minutes, rinse it three times with deionized water, and then place it in an oven to dry at 60℃ for 2 hours to obtain a cleaned polyester fabric.

[0067] S2.2: Mix 0.03 parts by weight of nano TiO2 powder and 12 parts by weight of deionized water in an ultrasonic disperser, adjust the ultrasonic frequency to 50 kHz, and ultrasonically disperse for 25 min to obtain a TiO2 suspension. Soak the decontaminated polyester fabric in the TiO2 suspension and shake it in a water bath at 55°C for 2 h to load nano TiO2 onto the surface of the polyester fabric. Then place it in a forced-air drying oven and dry it at 60°C for 1.5 h to obtain a polyester fabric with TiO2 attached.

[0068] S2.3: Mix 0.08 parts by weight of Ag2Se powder, 0.1 parts by weight of sodium polymethacrylate, and 12 parts by weight of deionized water in an ultrasonic disperser. Adjust the ultrasonic frequency to 60 kHz and ultrasonically disperse for 30 min to obtain an Ag2Se-PMANa suspension. Immerse polyester fabric with TiO2 attached in the Ag2Se-PMANa suspension and stir for 35 min. This constructs an Ag2Se / TiO2 complex on the surface of the polyester fabric, enhancing its bactericidal ability during photosensitization. Simultaneously, some silver ions combine with PMANa to form an Ag-PMANa polymer, allowing the Ag2Se to be absorbed even in the absence of sunlight. + The antibacterial properties of the polyester burred fabric used for foot pads are greatly enhanced by continuous antibacterial treatment. The fabric is then placed in an oven and dried at 55°C for 2 hours to obtain antibacterial polyester fabric.

[0069] S3: Preparation of antibacterial and heat-insulating polyester fabrics

[0070] S3.1: The BC-SiO2 composite aerogel obtained in step S1.4 is crushed in a pulverizer, and then mixed with an ethanol solution with a volume fraction of 50% at a mass ratio of 1:40 and placed in an ultrasonic disperser. The ultrasonic frequency is adjusted to 20KHz and ultrasonically dispersed for 25min to obtain a BC-SiO2 composite aerogel dispersion.

[0071] S3.2: Add 2 parts by weight of waterborne polyurethane and 0.2 parts by weight of hydroxyethyl cellulose to the BC-SiO2 composite aerogel dispersion obtained in step S3.1, stir evenly, and continue to sonicate at an ultrasonic frequency of 20KHz for 25 minutes to obtain the BC-SiO2 composite aerogel coating agent.

[0072] S3.3: Place the antibacterial polyester fabric obtained in step S2.3 on the coating platform of the bar coater, and then pour the BC-SiO2 composite aerogel coating agent obtained in step S3.2 into the coating tank of the bar coater, setting the sizing amount to 30g / m². 2 The bar coating machine is started to evenly coat the front side of the antibacterial polyester fabric with BC-SiO2 composite aerogel coating. It is then dried at 80℃ for 5 minutes. The bar coating machine is then adjusted to evenly coat the back side of the antibacterial polyester fabric with BC-SiO2 composite aerogel coating. It is then dried at 80℃ for 5 minutes and then placed in the drying tunnel and baked at 150℃ for 2 minutes to obtain antibacterial and heat-insulating polyester fabric. This allows the antibacterial components to be better preserved inside the polyester fabric, enabling the antibacterial components to exert their antibacterial effect continuously and stably, preventing the large-scale reproduction of bacteria and the generation of odors. The BC-SiO2 composite aerogel coating can also improve the heat insulation ability of the polyester burr cloth used for foot pads and reduce its aging rate in high-temperature environments such as summer.

[0073] S4: Burr treatment of antibacterial and heat-insulating polyester fabrics

[0074] S4.1: Place the antibacterial and heat-insulating polyester fabric on the machine table of the full-width weft-insulating warp knitting machine Rs3MSU-V, tie the antibacterial and heat-insulating polyester fabric tightly with binding yarn, and then puncture loops on the front side of the antibacterial and heat-insulating polyester fabric with loop radius of 4mm. The loop yarn material is monofilament or multifilament chemical fiber to obtain loop antibacterial and heat-insulating polyester fabric.

[0075] S4.2: The top of the loops on the loop side of the antibacterial and heat-insulating polyester fabric is shaped, sheared, and singed to obtain polyester burred fabric for foot pads. Example 3

[0076] A manufacturing process for polyester burred fabric used in foot pads, such as... Figure 1 As shown, it includes the following steps:

[0077] S1: Preparation of BC-SiO2 composite aerogel

[0078] S1.1: Take 4 parts by weight of bacterial cellulose membrane and cut it into small pieces in a membrane cutting machine. The small pieces are 2×2×0.5cm in size. Soak them in a 1.5mol / L KOH aqueous solution for 8 hours, filter them out, and rinse them 3 times with deionized water to obtain purified BC.

[0079] S1.2: The purified BC obtained in step S1.1 is mixed with 6 parts by weight of deionized water and placed in a high-speed stirrer. The stirring speed of the high-speed stirrer is adjusted to 10000 rpm and stirred for 30 min. Then, 6 parts by weight of acetone is added. After standing for 24 h, the mixture is filtered to obtain a solid substance. The solid substance is washed with ethanol 3 times and then with deionized water 4 times. Then, it is mixed with 6 parts by weight of deionized water to obtain a BC suspension.

[0080] S1.3: Place 8 parts by weight of tetraethyl orthosilicate, 10 parts by weight of deionized water and 28 parts by weight of anhydrous ethanol in a container and stir until homogeneous. Add dilute hydrochloric acid to adjust the pH to 3. Adjust the stirring speed of the magnetic stirrer to 200 rpm and stir for 2 hours to obtain a mixed solution. Then add the BC suspension prepared in step S1.2 and dilute ammonia to the mixed solution to make the pH of the mixed solution 7. After stirring until homogeneous, let it stand until gelation. Tilt the mixed solution in the container at 45° so that it does not flow to obtain a gel mixture.

[0081] S1.4: Take 8 parts by weight of the gel mixture and immerse it in anhydrous ethanol. Heat it in a water bath at 55°C for 12 hours to obtain an aged gel. Immerse the aged gel in anhydrous ethanol for 4 hours, then add 12 parts by weight of n-hexane and let it stand for 5 hours. Then immerse it in a surface modification solution prepared by trimethylchlorosilane and n-hexane at a volume ratio of 1:10 for 8 hours. Place it in a drying oven, adjust the temperature to 80°C, dry for 2 hours, then raise the temperature to 100°C and dry for 3 hours. Then raise the temperature to 120°C and dry for 2 hours to obtain BC-SiO2 composite aerogel. BC interweaves with each other in the unique three-dimensional network structure of SiO2 aerogel to form a finer network structure. At the same time, due to the high degree of polymerization and crystallinity of BC, the porosity and inter-material bonding force of BC-SiO2 composite aerogel are improved, thereby enhancing the thermal insulation and tensile strength of BC-SiO2 composite aerogel. The thermal insulation and tensile strength of the polyester burr cloth used in foot pads are improved.

[0082] S2: Antibacterial treatment of polyester fabrics

[0083] S2.1: Soak a 10cm×10cm polyester fabric in a detergent prepared by mixing ethanol, acetone and deionized water in a mass ratio of 1:1:1. Adjust the temperature to 40℃, and then use a glass rod to continuously turn the polyester fabric over. After washing for 30 minutes, rinse it 4 times with deionized water, and then place it in an oven to dry at 65℃ for 3 hours to obtain a cleaned polyester fabric.

[0084] S2.2: Mix 0.03 parts by weight of nano TiO2 powder and 12 parts by weight of deionized water in an ultrasonic disperser, adjust the ultrasonic frequency to 60 kHz, and ultrasonically disperse for 30 min to obtain a TiO2 suspension. Soak the decontaminated polyester fabric in the TiO2 suspension and shake it in a water bath at 60°C for 3 h to load nano TiO2 onto the surface of the polyester fabric. Then place it in a forced-air drying oven and dry it at 65°C for 2 h to obtain a polyester fabric with TiO2 attached.

[0085] S2.3: Mix 0.06 parts by weight of Ag2Se powder, 0.08 parts by weight of sodium polymethacrylate, and 10 parts by weight of deionized water in an ultrasonic disperser. Adjust the ultrasonic frequency to 80 kHz and ultrasonically disperse for 35 min to obtain an Ag2Se-PMANa suspension. Immerse polyester fabric with TiO2 attached in the Ag2Se-PMANa suspension and stir for 40 min. This constructs an Ag2Se / TiO2 complex on the surface of the polyester fabric, enhancing its bactericidal ability during photosensitization. Simultaneously, some silver ions combine with PMANa to form an Ag-PMANa polymer, allowing the Ag2Se to be absorbed even in the absence of sunlight. +The antibacterial properties of the polyester burred fabric used for foot pads are greatly enhanced by continuous antibacterial treatment. The fabric is then placed in an oven and dried at 60°C for 3 hours to obtain antibacterial polyester fabric.

[0086] S3: Preparation of antibacterial and heat-insulating polyester fabrics

[0087] S3.1: The BC-SiO2 composite aerogel obtained in step S1.4 is crushed in a pulverizer, and then mixed with an ethanol solution with a volume fraction of 45% at a mass ratio of 1:35 and placed in an ultrasonic disperser. The ultrasonic frequency is adjusted to 30KHz and ultrasonically dispersed for 30min to obtain a BC-SiO2 composite aerogel dispersion.

[0088] S3.2: Add 2 parts by weight of waterborne polyurethane and 0.1 parts by weight of hydroxyethyl cellulose to the BC-SiO2 composite aerogel dispersion obtained in step S3.1. After stirring evenly, continue to sonicate at an ultrasonic frequency of 30KHz for 30min to obtain the BC-SiO2 composite aerogel coating agent.

[0089] S3.3: Place the antibacterial polyester fabric obtained in step S2.3 on the coating platform of the bar coater, and then pour the BC-SiO2 composite aerogel coating agent obtained in step S3.2 into the coating tank of the bar coater, setting the sizing amount to 35g / m². 2 The bar coating machine is started to evenly coat the front side of the antibacterial polyester fabric with BC-SiO2 composite aerogel coating. It is then dried at 85℃ for 7 minutes. The bar coating machine is then adjusted to evenly coat the back side of the antibacterial polyester fabric with BC-SiO2 composite aerogel coating. It is then dried at 85℃ for 7 minutes and then placed in the drying tunnel and baked at 145℃ for 3 minutes to obtain antibacterial and heat-insulating polyester fabric. This allows the antibacterial components to be better preserved inside the polyester fabric, enabling the antibacterial components to exert their antibacterial effect continuously and stably, preventing the large-scale reproduction of bacteria and the generation of odors. The BC-SiO2 composite aerogel coating can also improve the heat insulation ability of the polyester burr cloth used for foot pads and reduce its aging rate in high-temperature environments such as summer.

[0090] S4: Burr treatment of antibacterial and heat-insulating polyester fabrics

[0091] S4.1: Place the antibacterial and heat-insulating polyester fabric on the machine table of the full-width weft-insulating warp knitting machine Rs3MSU-V, tie the antibacterial and heat-insulating polyester fabric tightly with binding yarn, and then puncture loops on the front side of the antibacterial and heat-insulating polyester fabric with loop radius of 5mm. The loop yarn material is monofilament or multifilament chemical fiber to obtain loop antibacterial and heat-insulating polyester fabric.

[0092] S4.2: The top of the loops on the loop side of the antibacterial and heat-insulating polyester fabric is shaped, sheared, and singed to obtain polyester burred fabric for foot pads.

[0093]

[0094] Compared with Example 1, Comparative Example 1 differs in that BC suspension was not added during the preparation of SiO2 aerogel by the tetraethyl orthosilicate sol-gel method, while the remaining steps were the same as in Example 1.

[0095] The polyester burred fabrics for foot pads prepared in Examples 1, 2, 3 and Comparative Example 1 were subjected to tensile property tests using a universal testing machine from Instron, UK. Each test was performed three times, and the data were recorded and compiled into a table, as shown in Table 1. It can be seen that the tensile strength of the polyester burred fabrics for foot pads prepared in the Examples is better than that prepared in Comparative Example 1.

[0096] Another set of polyester burred fabrics for foot pads prepared in Examples 1, 2, 3 and Comparative Example 1 were taken, and their thermal conductivity was tested at room temperature using a thermal conductivity meter. The lower the thermal conductivity, the better the heat insulation ability. The tests were performed 3 times, and the data were recorded and compiled into a table, as shown in Table 2. It can be seen that the thermal conductivity of the polyester burred fabrics for foot pads prepared in the Examples is lower than that of the polyester burred fabrics for foot pads prepared in Comparative Example 1.

[0097] Conclusion: Adding BC suspension during the preparation of SiO2 aerogel by tetraethyl orthosilicate sol-gel method can improve the heat insulation and tensile strength of polyester burred fabric used in foot pads.

[0098]

[0099]

[0100]

[0101] Compared with Example 1, Comparative Example 2 differs in that step S2 is removed, while the remaining steps are the same as in Example 1.

[0102] The polyester burred fabrics for foot pads prepared in Example 1 and Comparative Example 2 were used as samples. The antibacterial properties of the materials were tested according to the shaking method in standard FZ / T73023-2006. The test bacteria were Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli. First, the inoculated bacterial solution was prepared and cultured at 37℃±1℃ for 20h~24h. Then, the cultured bacterial solution was inoculated onto the sample and placed in a container. The solution was shaken at 24℃±1℃ and 150r / min for 18h in the dark and under light, respectively. The bacterial solution was then diluted in nutrient agar medium and cultured at 37℃±1℃ for 24h. Finally, the colony counts were selected from petri dishes with a colony count between 30 and 300. The data were recorded and compiled into a table, as shown in Table 3. It can be seen that the number of viable bacteria measured in the sample of Example 1 was much smaller than that measured in the sample of Comparative Example 2, regardless of whether it was under dark or light conditions. It can be demonstrated that antibacterial treatment of polyester fabrics for use in foot pads significantly enhances the photosensitive bactericidal ability of polyester burred fabrics, and also provides excellent antibacterial capabilities even in the absence of sunlight.

[0103]

[0104] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A process for preparing polyester burred fabric for foot pads, characterized in that, Includes the following steps: S1: Preparation of BC-SiO2 composite aerogel Bacterial cellulose membranes were cut into small pieces and purified by soaking in KOH aqueous solution. After washing, purified BC was obtained. The purified BC was physically broken down and treated with acetone, then dispersed in deionized water to obtain a BC suspension. The BC suspension was added to the process of preparing SiO2 aerogel using tetraethyl orthosilicate via the sol-gel method with dilute hydrochloric acid and dilute ammonia as catalysts. After gelation, a gel mixture was obtained. The gel mixture was then aged, solvent replaced, surface modified, and dried to obtain BC-SiO2 composite aerogel. The surface modification was performed using a surface modification solution prepared by mixing trimethylchlorosilane and n-hexane in a volume ratio of 1:(10-12). S2: Antibacterial treatment of polyester fabrics After washing and drying, a cleaned polyester fabric is obtained. Nano TiO2 powder is ultrasonically dispersed in deionized water to obtain a TiO2 suspension. The cleaned polyester fabric is immersed in the TiO2 suspension and subjected to water bath shaking. After drying, a polyester fabric with TiO2 attached is obtained. Ag2Se powder, sodium polymethacrylate and deionized water are mixed and ultrasonically dispersed to obtain an Ag2Se-PMANa suspension. The polyester fabric with TiO2 attached is immersed in the Ag2Se-PMANa suspension and stirred. After drying, an antibacterial polyester fabric is obtained. S3: Preparation of antibacterial and heat-insulating polyester fabrics The BC-SiO2 composite aerogel was pulverized and mixed with an ethanol solution and then ultrasonically dispersed to obtain a BC-SiO2 composite aerogel dispersion. Aqueous polyurethane and hydroxyethyl cellulose were added to the BC-SiO2 composite aerogel dispersion and ultrasonic treatment was continued to obtain a BC-SiO2 composite aerogel coating agent. The BC-SiO2 composite aerogel coating agent was coated on the surface of antibacterial polyester fabric using a bar coater. After drying and baking, an antibacterial and heat-insulating polyester fabric was obtained. S4: Burr treatment of antibacterial and heat-insulating polyester fabrics The antibacterial and heat-insulating polyester fabric is placed on the table of the full-width weft-insulating warp knitting machine Rs3MSU-V. The antibacterial and heat-insulating polyester fabric is tied tightly with binding yarn. Then, loop yarn is pierced on the front side of the antibacterial and heat-insulating polyester fabric to form loops and knit loops to obtain loop antibacterial and heat-insulating polyester fabric. The top of the loops on the loop side of the loop antibacterial and heat-insulating polyester fabric is shaped, sheared and singed to obtain polyester burred fabric for foot pads.

2. The preparation process of polyester burred fabric for foot pads according to claim 1, characterized in that, The preparation of step S1BC-SiO2 composite aerogel includes the following steps: S1.1: Take 4-6 parts by weight of bacterial cellulose membrane and cut it into small pieces in a membrane cutting machine. Soak it in a KOH aqueous solution with a concentration of 1-1.5 mol / L for 8-10 hours, filter it out, and rinse it with deionized water 3-5 times to obtain purified BC. S1.2: Mix the purified BC obtained in step S1.1 with 6-8 parts by weight of deionized water in a high-speed stirrer, adjust the stirring speed of the high-speed stirrer to 8000-10000 rpm, stir for 25-30 min, then add 4-6 parts by weight of acetone, let stand for 20-24 h, filter to obtain solid substance, wash the solid substance with ethanol 2-3 times, then wash with deionized water 3-4 times, and then mix with 6-8 parts by weight of deionized water to obtain BC suspension; S1.3: Place 8-10 parts by weight of tetraethyl orthosilicate, 10-12 parts by weight of deionized water and 28-32 parts by weight of anhydrous ethanol in a container and stir until homogeneous. Add dilute hydrochloric acid to adjust the pH to 2-3. Adjust the stirring speed of the magnetic stirrer to 150-200 rpm and stir for 1.5-2 hours to obtain a mixed solution. Then add the BC suspension prepared in step S1.2 and dilute ammonia to the mixed solution to make the pH of the mixed solution 5-7. After stirring until homogeneous, let it stand until gelation to obtain a gel mixture. S1.4: Take 8-10 parts by weight of the gel mixture and immerse it in anhydrous ethanol. Heat it in a water bath at 50-55℃ for 10-12 hours to obtain an aged gel. Immerse the aged gel in anhydrous ethanol for 2-4 hours, then add 12-15 parts by weight of n-hexane and let it stand for 3-5 hours. Then immerse it in a surface modification solution for 6-8 hours, and then place it in a drying oven. Adjust the temperature to 75-80℃ and dry for 1.5-2 hours. Then raise the temperature to 95-100℃ and dry for 2-3 hours. Then raise the temperature to 110-120℃ and dry for 1.5-2 hours to obtain BC-SiO2 composite aerogel.

3. The preparation process of polyester burred fabric for foot pads according to claim 2, characterized in that, Step S2, the antibacterial treatment of the polyester fabric, includes the following steps: S2.1: Soak a 10cm×10cm polyester fabric in detergent, adjust the temperature to 35-40℃, and then use a glass rod to continuously turn the polyester fabric over. After washing for 25-30 minutes, rinse with deionized water 3-4 times, and then place it in an oven to dry at 60-65℃ for 2-3 hours to obtain a cleaned polyester fabric. S2.2: Mix 0.02-0.03 parts by weight of nano TiO2 powder and 8-12 parts by weight of deionized water in an ultrasonic disperser, adjust the ultrasonic frequency to 50-60KHz, and ultrasonically disperse for 25-30 minutes to obtain a TiO2 suspension. Soak the decontaminated polyester fabric in the TiO2 suspension and shake it in a water bath at 55-60℃ for 2-3 hours. Then place it in a forced-air drying oven and dry it at 60-65℃ for 1.5-2 hours to obtain a polyester fabric with TiO2 attached. S2.3: Mix 0.06-0.08 parts by weight of Ag2Se powder, 0.08-0.1 parts by weight of sodium polymethacrylate and 10-12 parts by weight of deionized water in an ultrasonic disperser, adjust the ultrasonic frequency to 60-80KHz, and ultrasonically disperse for 30-35min to obtain Ag2Se-PMANa suspension. Soak the polyester fabric with TiO2 attached in the Ag2Se-PMANa suspension, stir for 35-40min, and then place it in an oven to dry at 55-60℃ for 2-3h to obtain antibacterial polyester fabric.

4. The preparation process of polyester burred fabric for foot pads according to claim 3, characterized in that, Step S3, the preparation of the antibacterial and heat-insulating polyester fabric, includes the following steps: S3.1: The BC-SiO2 composite aerogel obtained in step S1.4 is crushed in a pulverizer, and then mixed with ethanol solution at a mass ratio of 1:(35-40) and placed in an ultrasonic disperser. The ultrasonic frequency is adjusted to 20-30KHz and ultrasonically dispersed for 25-30min to obtain BC-SiO2 composite aerogel dispersion. S3.2: Add 2-3 parts by weight of waterborne polyurethane and 0.1-0.2 parts by weight of hydroxyethyl cellulose to the BC-SiO2 composite aerogel dispersion obtained in step S3.

1. After stirring evenly, continue to sonicate at an ultrasonic frequency of 20-30KHz for 25-30 minutes to obtain the BC-SiO2 composite aerogel coating agent. S3.3: Place the antibacterial polyester fabric obtained in step S2.3 on the coating platform of the bar coater, and then pour the BC-SiO2 composite aerogel coating agent obtained in step S3.2 into the coating tank of the bar coater, setting the sizing amount to 30-35 g / m². 2 Start the bar coating machine to evenly coat the BC-SiO2 composite aerogel coating agent onto the front side of the antibacterial polyester fabric, and dry it at 80-85℃ for 5-7 minutes. Adjust the bar coating machine to evenly coat the BC-SiO2 composite aerogel coating agent onto the back side of the antibacterial polyester fabric, and dry it again at 80-85℃ for 5-7 minutes before entering the drying tunnel and baking it at 145-150℃ for 2-3 minutes to obtain the antibacterial and heat-insulating polyester fabric.

5. The preparation process of polyester burred fabric for foot pads according to claim 4, characterized in that, Step S4, the burr removal of the antibacterial and heat-insulating polyester fabric, includes the following steps: S4.1: Place the antibacterial and heat-insulating polyester fabric on the machine table of the full-width weft-insulating warp knitting machine Rs3MSU-V, tie the antibacterial and heat-insulating polyester fabric tightly with binding yarn, and then puncture loops on the front side of the antibacterial and heat-insulating polyester fabric with loop radius of 4-5mm. The loop yarn material is monofilament or multifilament chemical fiber to obtain loop antibacterial and heat-insulating polyester fabric. S4.2: The top of the loops on the loop side of the antibacterial and heat-insulating polyester fabric is shaped, sheared, and singed to obtain polyester burred fabric for foot pads.

6. The preparation process of polyester burred fabric for foot pads according to claim 2, characterized in that, In step S1.3, the gelation is indicated by the mixed solution in the container not flowing when tilted at 45°.

7. The preparation process of polyester burred fabric for foot pads according to claim 3, characterized in that, The detergent in step S2.1 is prepared by mixing ethanol, acetone and deionized water in a mass ratio of 1:(1-1.5):(1-2).

8. The preparation process of polyester burred fabric for foot pads according to claim 4, characterized in that, In step S3.1, the volume fraction of the ethanol solution is 45-50%.

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