Fuzzing finishing process of aerogel fabric

Abstract

The invention belongs to the field of textile, and discloses a fuzzing finishing process of aerogel fabric, which comprises the key steps of blank refining, presetting, fuzzing, blank fixing, dyeing, dewatering, tentering and setting and the like. Treating the fabric through a continuous refiner, adding a degreaser, and carrying out multi-tank washing; then blank presetting is conducted, a fuzzing agent is added, and the temperature speed is controlled; napping is carried out twice in a clockwise and anticlockwise needle combination mode, and it is ensured that napping is uniform and dense; then blank fixing treatment is carried out, and the fabric quality is improved; the heating rate and the temperature holding time are strictly controlled in the dyeing process, and uniform dyeing is ensured; and finally, dehydrating, tentering and shaping to obtain a finished product. In addition, specific parameters of each step, such as needle speed during fuzzing, temperature program during dyeing and the like, are optimized, and an optimal process scheme is determined through a contrast test. According to the process, the fuzzing effect of the aerogel fabric can be effectively improved, the problem of linting is solved, and the process is suitable for the fabric made of 75D / 72F aerogel polyester and 20D spandex.

Description

Technical Field

[0001] The invention belongs to the field of textiles and discloses a raising and finishing process for aerogel fabrics. Background Art

[0002] In the textile industry, aerogel fabric, as a new type of high-performance material, has attracted much attention due to its unique thermal insulation, heat insulation and lightweight properties. Aerogel is a three-dimensional mesh nanoporous material whose main component is silicon dioxide. Its porosity can reach more than 90% and its specific surface area can reach 900m 2 / g, density can be as low as 0.002g / cm 3 , is the lowest density solid so far, also known as "solid smoke". It is generally prepared by sol-gel process, using supercritical extraction and other drying technologies to extract the solvent while maintaining the three-dimensional framework structure of the gel to the maximum extent, completing the replacement of air and solvent. The unique nanoporous structure makes its porosity extremely high and its density ultra-low, showing characteristics such as high specific surface area, low thermal conductivity, excellent insulation and heat insulation. Since the thermal insulation performance of fiber materials is proportional to the static air content inside the fiber materials, inversely proportional to the fiber diameter, and inversely proportional to the overall material density, theoretically, aerogel fiber is the best thermal insulation fiber at present, and is the most important development direction for the next generation of thermal insulation fibers.

[0003] However, the surface treatment and finishing process of aerogel fabrics, especially the raising finishing, is crucial to improving their performance and aesthetics. Traditional raising finishing processes are often designed for ordinary fabrics, but have many shortcomings when applied to aerogel fabrics.

[0004] In the prior art, the raising finishing process usually includes the steps of refining, pre-setting, raising, blanking, dyeing, dehydration and stentering. However, when these steps are applied to aerogel fabrics, it is often difficult to achieve the ideal raising effect due to the special properties of aerogel fibers, such as small fiber fineness and high strength. Specifically, the traditional process may not be able to completely remove the grease and impurities on the surface of the aerogel fabric during the refining process, resulting in uneven subsequent raising; in the raising process, due to improper setting of process parameters, such as clockwise and counterclockwise rotation speed, number of times and cloth speed, it is easy to cause insufficient raising density or hair loss problems; in the dyeing and setting process, improper control of temperature and time may also affect the color fastness and feel of the aerogel fabric.

[0005] In addition, the napping finishing process in the prior art often lacks special optimization for aerogel fabrics, resulting in the inability of the treated fabrics to fully demonstrate the advantages of aerogel in terms of performance, such as thermal insulation, heat insulation and light weight. At the same time, the traditional process may also damage the aerogel fibers during the processing process, reducing their service life.

[0006] Therefore, it is particularly important to develop a special raising finishing process according to the special properties and application requirements of aerogel fabrics. Summary of the invention

[0007] In order to solve the above problems, the present invention discloses an optimized aerogel fabric raising and finishing process, which ensures uniform raising and high density by precisely controlling the process parameters and operation procedures of each step, while reducing the problem of hair loss and improving the performance and aesthetics of the aerogel fabric.

[0008] The present invention includes the following technical solutions:

[0009] A process for raising and finishing an aerogel fabric comprises the following steps:

[0010] S1 Blank refining: The fabric is treated with a continuous warp knitted fabric and weft knitted fabric degreasing and shrinking machine, degreasing agent is added, and multiple tanks with different temperatures are set for water washing to obtain blanks;

[0011] S2 Blank reservation: Pre-register the refined blank, add the raising agent and control the temperature and speed;

[0012] S3 Blank Raising: Perform blank raising process, using a combination of clockwise and counter-clockwise methods, setting different passes, process parameters and fabric speeds;

[0013] S4 Blank setting: Blank setting is performed on the raised fabric, and appropriate pre-setting temperature and speed are selected to ensure that the finished fabric has fewer creases, stable shrinkage and good hand feel;

[0014] S5 dyeing process: including dyeing, washing, softening, controlling the heating rate and holding time to prevent dyeing color changes, and using specific washing steps after dyeing to ensure color fastness;

[0015] S6 dehydration: dehydration of dyed fabrics;

[0016] S7 tentering setting: Choose the appropriate tentering setting temperature to reduce shrinkage and curling problems and improve the feel of the fabric.

[0017] Furthermore, in the above-mentioned aerogel fabric raising finishing process, the step S1 of rough refining includes the following specific steps:

[0018] A continuous warp knitted fabric and weft knitted fabric degreasing and shrinking machine is used for refining, 1-3% of degreasing agent is added, and the cloth speed is 20-30m / min; a multi-slot unit is used for water washing, and the temperature is controlled between 40-90℃.

[0019] Preferably, a continuous warp knitted fabric and weft knitted fabric degreasing and shrinking machine is used for refining, and 2% of the degreasing agent XD-JL is added into the auxiliary agent tank for uniform stirring, and then transported to six tanks for washing and refining.

[0020] Furthermore, in the above-mentioned raising finishing process of aerogel fabric, the step S2 of blank pre-setting includes the following specific steps: pre-setting the refined blank at a temperature of 150-200° C., adding a raising agent in an amount of 1-3%, and a speed of 15-25 m / min.

[0021] Preferably, a M5473-CM260*8 stenter is used, 2% of a raising agent PZ is added to the feed tank, the temperature is raised to 180° C., and the speed is 20 m / min to perform blank setting.

[0022] Furthermore, in the above-mentioned raising and finishing process of aerogel fabric, the step S3 of raising the blank includes: a two-pass raising process;

[0023] The first pass, clockwise 23, counterclockwise 25, cloth speed 19-21m / min;

[0024] The second time, clockwise 28, counter-clockwise 31, the cloth speed is 22-24m / min.

[0025] Furthermore, in the above-mentioned aerogel fabric raising finishing process, the step S4 of blank setting includes the following specific steps: a tentering setting machine sets the raised fabric at a temperature of 200-205°C and a speed of 15-25m / min; preferably, the speed is 20m / min

[0026] Furthermore, in the above-mentioned aerogel fabric raising finishing process, the step S5 dyeing process comprises the following steps:

[0027] S51 dyeing: When the water temperature is 40-45℃, add acetic acid, leveling repair agent, moisture absorbing quick-drying agent, sodium acetate, and dye in sequence, and perform temperature dyeing. The procedure is as follows:

[0028] 0.5-1.5℃ / min to raise the temperature to 70-80℃ and keep warm for 5-15min,

[0029] Raise the temperature to 85-95℃ at 0.5-1.0℃ / min, seal the lid at 78-82℃ and keep warm for 5-15min;

[0030] 0.3-0.8℃ / min to 120-140℃, keep warm for 40-60min;

[0031] S52 cleaning: After dyeing, cool to 78-82℃ without draining. The first step is acid reduction cleaning, and the second step is soda ash and insurance powder to remove floating color;

[0032] S53 Softening: Softening is done using hydrophilic softener and citric acid.

[0033] Furthermore, in the above-mentioned raising finishing process of aerogel fabric, in the dehydration in step S6, a HSB-1500 centrifugal dehydrator is used for dehydration at 350-400 rpm for 10-20 min; preferably, dehydration is performed at 380 rpm for 15 min.

[0034] Furthermore, in the above-mentioned raising finishing process of aerogel fabric, in the S7 stentering and setting, a M5473-CM260*8 stentering and setting machine is used, and the temperature is set to 130-150°C and the speed is set to 15-25m / min; preferably, the temperature is set to 140°C and the speed is set to 20m / min.

[0035] The invention discloses application of the above-mentioned raising finishing process in aerogel fabric, wherein the aerogel fabric is made of 75D / 72F aerogel polyester and 20D spandex.

[0036] The invention discloses a light, thin and warm aerogel fabric, which is obtained by the above-mentioned process.

[0037] Compared with the prior art, the present invention has the following outstanding beneficial effects:

[0038] Optimized raising effect: The raising finishing process of the present invention successfully achieves uniform and dense raising of aerogel fabric through precise process parameter control and a combination of clockwise and counterclockwise raising. This not only improves the aesthetics of the fabric, but also ensures the firmness of the plush, effectively avoids the problem of hair loss during wearing, and thus prolongs the service life of the fabric.

[0039] Enhanced thermal insulation performance: The aerogel fabric treated by the present invention has good fluffiness, which effectively increases the thermal insulation of the fabric. Compared with conventional acrylic / viscose thermal insulation materials on the market, the aerogel fabric of the present invention exhibits a better thermal insulation effect at a lower weight, providing better protection for wearing in cold environments.

[0040] Excellent antibacterial performance: The aerogel fabric of the present invention has a significant antibacterial effect, with an antibacterial index of up to 99%. This feature enables the fabric to provide safer protection when worn close to the body or in situations where a high level of hygiene is required, reducing the risk of bacterial growth and spread.

[0041] Excellent moisture absorption, moisture permeability and quick drying: Thanks to the large specific surface area of ​​the aerogel itself, the aerogel fabric treated by the present invention performs well in moisture absorption, moisture permeability and quick drying. This helps to reduce the stuffiness during wearing of the thermal insulation fabric and improves the comfort and breathability of wearing. Compared with conventional hollow thermal insulation materials, the aerogel fabric of the present invention has obvious advantages in this function.

[0042] Comprehensive performance improvement: In addition to the above-mentioned specific performance, the napping finishing process of the present invention also comprehensively considers the overall performance of aerogel fabrics. Through the fine control of the steps of refining, pre-setting, dyeing, dehydration, stentering and shaping, the comprehensive improvement of the fabric in terms of hand feel, shrinkage stability, color fastness, etc. is ensured, meeting the market demand for high-quality aerogel fabrics.

[0043] In summary, the present invention successfully solves the technical problems of aerogel fabric in terms of raising, heat preservation, antibacterial, moisture absorption and permeability, and quick drying through a special raising finishing process, and provides strong technical support for the wide application of aerogel fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is the knitting arrangement diagram in Example 1;

[0045] Figure 2 This is the triangle arrangement diagram in Example 2. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] 75D / 72F aerogel polyester comes from Qingdao Zhengxinlong Textile Technology Co., Ltd., specification 75D / 72F polyester DTY yarn.

[0048] Example 1

[0049] Preparation of aerogel fabrics, taking the developed single-sided thin and lightweight structure as an example.

[0050] 1.1 Equipment selection

[0051] Model: DF-CS four-track single-sided machine.

[0052] Machine gauge: 28 needles / 25.4mm, cylinder diameter: 864mm (30 inches).

[0053] Number of needles: 2628.

[0054] Road number: 102F.

[0055] 1.2 Weaving process

[0056] 1.2.1 Knitting arrangement:

[0057] like Figure 1 , there is a row of needles every other high and low legs.

[0058] 1.2.2 Triangular arrangement: Figure 2 shown.

[0059] 1.2.3 Yarn threading method

[0060] The yarn is threaded with 75D / 72F aerogel polyester + 20D spandex in each pass.

[0061] 1.2.3 Process parameters

[0062] After many tests, according to the raw material ratio, yarn density, fabric specifications and uses, optimization and appropriate adjustments are made within the following ranges:

[0063] ① Yarn tension 2.0-2.5cN.

[0064] ② Blank weight: 110g / m 2 .

[0065] ③100 buckle line length: 75D / 72F aerogel polyester 240±2mm, spandex 100±2mm.

[0066] ④Under-machine width: (82cm×2)±5cm.

[0067] 1.3 Technical Keys

[0068] (1) The yarn feeding method adopts active yarn feeding. Due to the high needle gauge of the equipment, the German Meimingge MPF-L yarn feeder is used to effectively ensure the uniformity of the yarn feeding tension. Since the yarn used is 75D, which is relatively thin, the yarn feeding tension is controlled at 3.8-4.45CN. The tension is appropriately small while ensuring the start-up.

[0069] (2) Reasonably adjust the feeding position to ensure that each spandex yarn is fed correctly. The drafting multiple of the spandex yarn is controlled between 2.6 and 3.0 times to prevent the spandex yarn from breaking and fully ensure the elasticity of the spandex yarn.

[0070] (3) During the weaving process, special attention should be paid to the wear of the knitting needles. Since aerogel powder is added to the modified polyester, the knitting needles will wear faster than ordinary polyester when the loom is running at high speed. When the order volume is large, attention should be paid to increasing the frequency of needle oil use to prevent needle path problems caused by this. In addition, attention should also be paid to the uniformity of the yarn dryness and the resulting weaving stripes.

[0071] Example 2

[0072] The aerogel fabric prepared in the embodiment is subjected to napping finishing according to scheme 1: blank refining → blank pre-setting → blank napping → blank blank setting → dyeing → out of the cylinder dehydration → blank tentering and shaping, which specifically includes the following steps:

[0073] 2.1 Water washing and refining

[0074] Equipment model: Continuous warp knitted fabric and weft knitted fabric degreasing and shrinking machine.

[0075] Equipment operation mode: six tanks continuous heating operation.

[0076] Processing technology:

[0077] Additive: Degreasing agent XD-JL: Dosage: 2%.

[0078] Fabric speed: 25m / min.

[0079] Temperature: Tank 1: 60℃ → Tank 2: 80℃ → Tank 3: 90℃ → Tank 4: 80℃ → Tank 5: 60℃ → Tank 6: 40℃.

[0080] A continuous warp knitted and weft knitted cloth degreasing and shrinking machine is used for refining. 2% of the degreasing agent XD-JL is added into the auxiliary agent tank for uniform stirring and then transported to six tanks for water washing and refining.

[0081] According to feedback from the weaving process, since aerogel-modified fibers can easily cause wear of knitting needles, the amount of spinning oil will be increased during the aerogel spinning and weaving process to reduce friction resistance during high-speed operation. Therefore, the oil content of the fabric is greater than that of conventional polyester products. The spinning oil needs to be thoroughly removed before dyeing, especially for sensitive colors such as green, purple, brown, and gray, to avoid dyeing color spots and color blooms.

[0082] 2.2 Pre-order of rough materials

[0083] Equipment: Shaoyang Textile Machinery Co., Ltd.

[0084] Model: M5473-CM260*8 stenter setting machine.

[0085] Auxiliary agent: Nichihwa Chemical Co., Ltd., raising agent PZ: 2%.

[0086] Temperature: 180℃.

[0087] Speed: 20m / min.

[0088] Use M5473-CM260*8 stenter setting machine, add raising agent P-Z2% in the feeding tank, raise the temperature to 180℃, speed 20M / min, and after the blank is predetermined, the blank is raised.

[0089] 2.3 Roughening process of blank

[0090] Equipment: Lianyungang Yingyou Co., Ltd.

[0091] Model: 36-roller steel needle napping machine.

[0092] A 36-roller steel needle roughening machine is used, and the steel needles are installed in double groups, clockwise and counterclockwise. The first-pass process parameters are set on the roughening machine computer: clockwise 23, counterclockwise 25, and the cloth speed is set to 21m / min. After roughening once, the second-pass process parameters are set: clockwise 28, counterclockwise 30, and the cloth speed is set to 24m / min for the second roughening.

[0093] The specific process parameters are shown in Table 1 below:

[0094] Table 1 Blank roughening process parameters

[0095]

[0096] 2.4 Blank determination

[0097] Equipment: Shaoyang Textile Machinery Co., Ltd.

[0098] Model: M5473-CM260*8 stenter setting machine.

[0099] Temperature: 200℃.

[0100] Speed: 20m / min.

[0101] By roughening the blank, the creases and shrinkage of the blank after roughening can be solved, which helps to ensure the quality of the material surface during dyeing.

[0102] This process tests the effects of different pre-setting temperatures on aerogel fabrics, and then affects the fabric style, and determines the optimal pre-setting temperature and speed of 20m / min. The test results are shown in Table 2 below:

[0103] Table 2 Blank blank determination process

[0104] Preset temperature 180℃ 190℃ 200℃ 205℃ Softness good good good good Crease Difference Difference good good Shrinkage Difference Difference good good

[0105] As can be seen from the above, setting the temperature at 200-205℃ and the speed at 20m / min can effectively ensure that the finished fabric has fewer creases, stable shrinkage and good hand feel.

[0106] 2.5 Dyeing process

[0107] Taking dyeing black as an example, the weight ratio of fabric to water is 1:5. For 1T fabric, 5T of water is needed in the dyeing vat. The specific process is as follows:

[0108] ①Dyeing materials:

[0109]

[0110] ②Cleaning materials:

[0111]

[0112] ③Soft material:

[0113] Hydrophilic softener XD-R1 4%,

[0114] Citric acid 0.2%.

[0115] ④ Aerogel modified fiber Since aerogel contains a large number of micropores and a large specific surface area, the adsorption capacity of dyes is enhanced. Therefore, in order to prevent the appearance of dyeing color flowers, the dyeing process is as follows:

[0116] Dyeing equipment: Wuxi Dongbao Machinery Manufacturing Co., Ltd., model: DBAL-IVK, Q-type high temperature and high pressure dyeing machine. When the water temperature is about 40-45℃, add acetic acid HAC, leveling repair agent DL-200, moisture absorption and quick drying PR-913, sodium acetate CH3COONa, and Shanghai Yayun dye in batches to increase the temperature and slow down the dyeing rate. The temperature is increased to 75℃ at 1℃ / min and kept warm for 10 minutes, and the temperature is increased to 90℃ at 0.7℃ / min (including sealing at 80℃) and kept warm for 10 minutes, and the temperature is increased to 130℃ at 0.5℃ / min and kept warm for 50 minutes. When formulating the dyeing process curve, attention should be paid to controlling the heating rate and increasing the temperature holding time at the key temperature point to facilitate level dyeing. After dyeing, the temperature is lowered to 80℃ without drainage. The first pass uses acid reduction cleaning, and the second pass uses soda ash and insurance powder to remove floating color to ensure dyeing fastness.

[0117] 2.6 Dehydration:

[0118] Equipment: United Machinery Co., Ltd., Model: HSB-1500 centrifugal dehydrator.

[0119] Speed: 380 rpm.

[0120] 2.7 Tentering and shaping:

[0121] Equipment: Shaoyang Textile Machinery Co., Ltd.

[0122] Model: M5473-CM260*8 stenter setting machine.

[0123] Temperature: 140℃.

[0124] Speed: 20m / min.

[0125] This process verifies the influence of different tentering and setting temperatures on the style of aerogel fabrics. The specific experimental data are shown in Table 3 below:

[0126] Table 3 Tentering and shaping: process parameters

[0127]

[0128] From the above data, it can be seen that the setting temperature for the finished product is about 140-150℃, which can effectively reduce the problem of shrinkage and curling, and it should not be too high, which will result in poor hand feel of the fabric.

[0129] Comparative Example

[0130] The following process scheme 2 is used in the comparative example: blank refining → blank shaping → dyeing → dehydration → drying → roughening → smooth blank stentering and shaping

[0131] The blank refining, blank setting, dyeing, and dehydration processes refer to steps 2.1, 2.4, 2.5, and 2.6 respectively. The drying is carried out at 140°C for a certain time. The raising process and the smooth blank stentering and setting process refer to steps 2.3 and 2.7 respectively.

[0132] Test Example 1

[0133] The raising processes of Example 2 and Comparative Example were compared and analyzed, and the results are shown in Table 4.

[0134] Table 4 Comparison of aerogel fabric raising finishing processes

[0135]

[0136] The linting amount shall refer to the standard T / CNTAC22-2018 "Test method for linting of fluff fabrics".

[0137] It can be seen from the results that the product treated with the scheme 1, i.e., raising the nap before dyeing, has a better raising style, the nap is even and dense, and the problem of hair loss during wearing is effectively avoided.

[0138] Test Example 2

[0139] Functional index test

[0140] (1) Comparison of bulkiness

[0141] The developed aerogel fabric and its conventional polyester product were compared using a fabric thickness meter. Under the same specification and process parameter conditions, the rough thickness results are shown in Table 5:

[0142] Table 5 Comparison between aerogel fabrics and polyester products

[0143]

[0144] This process tests the thickness of different parts of the fabric and obtains the average value. From the results, it can be seen that the aerogel fiber fabric treated by this process has good fluffiness and can effectively increase its thermal insulation.

[0145] (2) Antibacterial performance test

[0146] ① Referring to the standard FZ / T 73023-2014 "Antibacterial Knitwear", the antibacterial properties of aerogel products were tested. The specific results are shown in Table 6:

[0147] Table 6 Physical and chemical performance index measurement results

[0148]

[0149] It can be seen from the above table that aerogel fabric has good antibacterial effect, and the antibacterial index reaches 99%.

[0150] (3) Warmth index test

[0151] The thermal insulation properties of the two developed fabrics were tested according to standard FZ / T 73022-2019 "Knitted Thermal Underwear". The results are shown in Table 7:

[0152] Sample A: (Example 2) Fabric developed by process of scheme 1; Sample B: (Comparative example) Fabric developed by process of scheme 2, Sample C: 9.8tex 50 acrylic / 50 viscose + 20D cotton lining, 210g / m 2 .

[0153] Table 7 Warmth index test

[0154]

[0155] It can be seen from the above table that the thermal insulation rate of the sample developed by Plan 1 is better than that of the product developed by Plan 2, and meets the standard requirements of knitted thermal underwear, which is consistent with the best choice; secondly, aerogel fabric is better than conventional acrylic / viscose thermal insulation materials on the market at a lower weight, and has a good thermal insulation effect.

[0156] (4) Moisture permeability test

[0157] The moisture permeability of the aerogel fabric treated by the process of Example 2 was tested, and the results are shown in Table 8.

[0158] Table 8: Water vapor permeability test

[0159]

[0160]

[0161] According to GB / T21655.1-2008 "Evaluation of moisture absorption and quick-drying of textiles Part 1 Single combination test method", the water drop diffusion time of the fabric was measured, and the test value was 1.9s, which is far lower than the standard value of 6s; according to FZ / T 01071-2008 "Test method for capillary effect of textiles", the fabric wicking height was measured, which was 88mm, higher than the standard value of 80mm, indicating that the developed aerogel fabric has good moisture absorption performance. According to GB / T 12704.1-2009 "Test method for moisture permeability of textile fabrics Part 1 Moisture absorption method", the water absorption rate of the fabric was measured, which was 303%, significantly higher than the standard value of 80%, indicating that the aerogel fabric has good water absorption; according to the standard method of GB / T21655.1-2008, the drying rate of the fabric was measured, which was 0.24g / h, higher than the standard value of 0.2g / h, indicating that the developed aerogel fabric has excellent moisture permeability and quick drying functions. Aerogel fabrics have excellent moisture absorption, moisture permeability and quick-drying functions, mainly due to the large specific surface area of ​​aerogel itself, which is conducive to the transfer and evaporation of moisture, thereby reducing the stuffiness when wearing thermal fabrics. This function is superior to conventional hollow thermal insulation materials.

[0162] It can be seen from the above embodiments that the present invention provides a raising and finishing process specially designed for aerogel fabrics. By precisely controlling the process parameters of key steps such as refining, pre-setting, raising, blank setting, dyeing, dehydration and stentering, the uniform and dense raising of the fabric is achieved, effectively avoiding the problem of hair loss. At the same time, the process also significantly improves the thermal insulation performance, antibacterial effect, moisture absorption, moisture permeability and quick-drying function of the fabric, so that the aerogel fabric can show a better thermal insulation effect than conventional thermal insulation materials at a lower gram weight, and is more comfortable and breathable to wear. In addition, the feel, shrinkage stability and color fastness of the fabric have also been comprehensively improved, meeting the market's diversified needs for high-quality aerogel fabrics.

[0163] The above are only a few preferred embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A process for raising and finishing aerogel fabric, characterized in that: The following steps are involved: S1 Blank refining: The fabric is treated with a continuous warp knitted fabric and weft knitted fabric degreasing and shrinking machine, degreasing agent is added, and multiple tanks with different temperatures are set for water washing to obtain blanks; S2 Blank reservation: Pre-register the refined blank, add the raising agent and control the temperature and speed; S3 Blank Raising: Perform blank raising process, using a combination of clockwise and counter-clockwise methods, setting different passes, process parameters and fabric speeds; S4 Blank setting: Blank setting is performed on the raised fabric, and appropriate pre-setting temperature and speed are selected to ensure that the finished fabric has fewer creases, stable shrinkage and good hand feel; S5 dyeing process: including dyeing, washing, softening, controlling the heating rate and holding time to prevent dyeing color changes, and using specific washing steps after dyeing to ensure color fastness; S6 dehydration: dehydration of dyed fabrics; S7 tentering setting: Choose the appropriate tentering setting temperature to reduce shrinkage and curling problems and improve the feel of the fabric.

2. The process for raising and finishing aerogel fabric according to claim 1, characterized in that: The step S1 of roughcast refining includes the following specific steps: A continuous warp knitted fabric and weft knitted fabric degreasing and shrinking machine is used for refining, 1-3% of degreasing agent is added, and the cloth speed is 20-30m / min; a multi-slot unit is used for water washing, and the temperature is controlled between 40-90℃.

3. The process for raising and finishing aerogel fabric according to claim 1, characterized in that: The step S2 of blank pre-setting includes the following specific steps: pre-setting the refined blank at a temperature of 150-200° C., adding a raising agent in an amount of 1-3%, and a speed of 15-25 m / min.

4. The process for raising and finishing aerogel fabric according to claim 1, characterized in that: The step S3 of roughening: includes two rounds of roughening process; The first pass, clockwise 23, counterclockwise 25, cloth speed 19-21m / min; The second time, clockwise 28, counter-clockwise 31, the cloth speed is 22-24m / min.

5. The process for raising and finishing aerogel fabric according to claim 1, characterized in that: The step S4 of blank setting includes the following specific steps: a tentering setting machine sets the raised fabric at a temperature of 200-205° C. and a speed of 15-25 m / min.

6. The process for raising and finishing aerogel fabric according to claim 1, characterized in that: The step S5 dyeing process comprises the following steps: S51 dyeing: When the water temperature is 40-45℃, add acetic acid, leveling repair agent, moisture absorbing quick-drying agent, sodium acetate, and dye in sequence, and perform temperature dyeing. The procedure is as follows: 0.5-1.5℃ / min to raise the temperature to 70-80℃ and keep warm for 5-15min, Raise the temperature to 85-95℃ at 0.5-1.0℃ / min, seal the lid at 78-82℃ and keep warm for 5-15min; 0.3-0.8℃ / min to 120-140℃, keep warm for 40-60min; S52 cleaning: After dyeing, cool to 78-82℃ without draining. The first step is acid reduction cleaning, and the second step is soda ash and insurance powder to remove floating color; S53 Softening: Softening is done using hydrophilic softener and citric acid.

7. The process for raising and finishing aerogel fabric according to claim 1, characterized in that: In the dehydration step S6, a HSB-1500 centrifugal dehydrator is used for dehydration at 350-400 rpm for 10-20 min.

8. The process for raising and finishing aerogel fabric according to claim 1, characterized in that: In the S7 stentering setting, a M5473-CM260*8 stentering setting machine is used, and the temperature is set at 130-150° C. and the speed is set at 15-25 m / min.

9. Application of the raising finishing process according to any one of claims 1 to 8 in aerogel fabrics, characterized in that: The aerogel fabric is made of 75D / 72F aerogel polyester and 20D spandex.

10. A light, thin and warm aerogel fabric, characterized in that: Obtained by the process described in any one of claims 1 to 8.

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