Antistatic treatment process for blended fabric

Abstract

The invention belongs to the technical field of textile fabrics, and discloses a blended fabric antistatic treatment process which comprises the following treatment steps: S1, preparation of an electrostatic agent: a, selecting quaternary ammonium salt and a bio-based antistatic agent to prepare a mixed bio-based antistatic agent; and b, mixing and dissolving the prepared mixed bio-based antistatic agent by adopting an ultrasonic-assisted dissolution method. Static charges on the fabric can be effectively neutralized through the conductivity of the quaternary ammonium salt, the bio-based antistatic agent reduces generation of static electricity by providing moisture and forming a protective film, the combination of the bio-based antistatic agent and the quaternary ammonium salt can complement each other on different layers, the overall antistatic performance is improved, and the antistatic effect is improved by introducing the combination of the bio-based antistatic agent and the quaternary ammonium salt. The problem of static electricity accumulation of the blended fabric in a dry environment can be effectively solved, discomfort and potential safety hazards caused by static electricity are reduced, and the fabric can be softer and the wearing comfort can be improved due to the use of bio-based components such as glycerol and vegetable oil.

Description

Technical Field

[0001] The invention belongs to the technical field of textile fabrics, and in particular relates to a process for antistatic treatment of blended fabrics. Background Art

[0002] During the weaving and wearing process, blended fabrics (such as a mixture of polyester and cotton) are prone to generate static electricity due to friction or environmental changes, which may cause the clothes to absorb dust, hair and other impurities, affecting the appearance and cleanliness. Antistatic treatment is usually required. On the one hand, antistatic fibers are blended, and on the other hand, antistatic agents are used for immersion treatment after blending to make the fabric have good antistatic properties.

[0003] In the prior art, blended fabrics are treated with antistatic agents by immersion. However, the antistatic agents currently used are non-biodegradable and synthetic chemicals that are difficult to degrade and cause environmental pollution. In addition, synthetic antistatic agents may cause damage to ecosystems and water sources during production and use, affecting the recycling of fabrics. At the same time, ordinary antistatic agents may cause skin allergies or other health problems, especially in direct contact with the skin. Traditional antistatic agents may release volatile organic compounds, which are potentially harmful to human health. This results in a variety of disadvantages in fabrics that have undergone actual antistatic treatment, greatly reducing the safety and comfort of use, and resulting in poor results. Summary of the invention

[0004] The purpose of the present invention is to provide a process for antistatic treatment of blended fabrics to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a process for antistatic treatment of blended fabrics, comprising the following treatment steps:

[0006] S1. Preparation of antistatic agent: a. Select quaternary ammonium salt and bio-based antistatic agent to prepare mixed bio-based antistatic agent; b. Use ultrasonic assisted dissolution method to mix and dissolve the mixed bio-based antistatic agent; c. Adjust the pH value of the antistatic agent; d. Prepare antistatic agent solution: dissolve the antistatic agent in water or other solvent at a concentration of 0.5%-2.0% (mass ratio);

[0007] S2, antistatic immersion treatment: put the antistatic agent solution prepared above into the immersion tank, and immerse the fabric blended with antistatic fiber in the antistatic agent, start the heating component in the tank, maintain the solution temperature at 30-40° C., and maintain the immersion treatment for 45-60 minutes;

[0008] S3, heat curing treatment: a. Use low temperature drying method (40-60℃) for preliminary drying, long-term drying, use hot air circulation method to clamp the opened fabric, and perform double-sided synchronous drying treatment; b. Use multi-stage temperature pressure shaping method for post-stage heat treatment, use double-sided metal plate hot plate to press on both sides of the fabric to complete the heat curing treatment;

[0009] S4, secondary surface treatment: using nano antistatic agent for surface spraying treatment, further attaching electrostatic treatment agent;

[0010] S5, post-treatment: ultrasonic washing is used to remove the uncured antistatic agent on the surface of the fabric and complete non-destructive cleaning; after cleaning, hot air circulation drying is used for secondary drying;

[0011] S6. Quality inspection: Implement online inspection and multi-point inspection, and cooperate with gas permeability tester and softness tester for comprehensive quality inspection.

[0012] Preferably, the bio-based antistatic agent includes glycerol, plant polysaccharides and plant oils, the plant polysaccharides are one or any of alginate and guar gum, the plant oil is one or any of linseed oil and coconut oil, and the ratio of the bio-based antistatic agent to the quaternary ammonium salt is 1:1.

[0013] Preferably, in S1, the pH value of the antistatic agent is controlled at 6-8, and when adjusting the pH, acid or base is slowly added and continuously stirred to ensure that the solution is evenly mixed.

[0014] Preferably, in S1, the stirring speed during the dissolution of the antistatic agent is generally controlled between 200-800 revolutions per minute (RPM), and the stirring time is between 10-30 minutes.

[0015] Preferably, in S2, a vibration component is added to the soaking pool during the immersion process, and the soaked fabric is vibrated in the soaking pool by the vibration component.

[0016] Preferably, in S3, the multi-stage temperature and pressure setting includes a pretreatment stage, a main setting stage and a cooling and stabilization stage. The temperature in the pretreatment stage is 160°C-180°C, the pressure is 0.5-2Mpa, and the time is 5-10 minutes; in the main setting stage, the temperature is 180°C-210°C, the pressure is 2-4Mpa, and the time is 10-15 minutes; in the cooling and stabilization stage, the temperature is 120°C-160°C, the pressure is 1-2MPa, and the time is 5-8 minutes.

[0017] Preferably, in S5, the washing temperature during ultrasonic washing is controlled at 30-40°C, and the drying temperature after washing is controlled at 60-80°C.

[0018] Preferably, in S6, the online detection includes temperature monitoring, pressure monitoring and material status monitoring, and the specific equipment is an infrared temperature sensor, a pressure sensor and an image acquisition system.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention can effectively neutralize the electrostatic charge on the fabric through the conductivity of the quaternary ammonium salt, and the bio-based antistatic agent reduces the generation of static electricity by providing moisture and forming a protective film. The combination of the two can complement each other at different levels and improve the overall antistatic performance. By introducing the combination of the bio-based antistatic agent and the quaternary ammonium salt, the problem of static electricity accumulation of the blended fabric in a dry environment can be effectively reduced, and the discomfort and safety hazards caused by static electricity can be reduced. In addition, the use of bio-based ingredients such as glycerol and vegetable oil can make the fabric softer and improve the comfort of wearing.

[0021] 2. The present invention adopts a staged temperature-pressure shaping method to gradually heat and pressurize, so that the fibers are properly relaxed and reshaped, thereby enhancing the wrinkle resistance and shape stability of the fabric, improving the permeability and binding force of the antistatic agent, forming an effective antistatic protective layer, significantly improving the antistatic effect of the fabric, and improving the flatness, glossiness and touch of the fabric. The staged cooling process helps to maintain the shape and structure of the fabric, ensuring the durability of the antistatic performance during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the process flow of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0024] like Figure 1 As shown, the embodiment of the present invention provides a process for antistatic treatment of blended fabrics, including the following treatment steps:

[0025] S1. Preparation of antistatic agent: a. Select quaternary ammonium salt and bio-based antistatic agent to prepare mixed bio-based antistatic agent; b. Use ultrasonic assisted dissolution method to mix and dissolve the mixed bio-based antistatic agent; c. Adjust the pH value of the antistatic agent; d. Prepare antistatic agent solution: dissolve the antistatic agent in water or other solvent at a concentration of 0.5%-2.0% (mass ratio);

[0026] S2, antistatic immersion treatment: put the antistatic agent solution prepared above into the immersion tank, and immerse the fabric blended with antistatic fiber in the antistatic agent, start the heating component in the tank, maintain the solution temperature at 30-40° C., and maintain the immersion treatment for 45-60 minutes;

[0027] S3, heat curing treatment: a. Use low temperature drying method (40-60℃) for preliminary drying, long-term drying, use hot air circulation method to clamp the opened fabric, and perform double-sided synchronous drying treatment; b. Use multi-stage temperature pressure shaping method for post-stage heat treatment, use double-sided metal plate hot plate to press on both sides of the fabric to complete the heat curing treatment;

[0028] S4, secondary surface treatment: using nano antistatic agent for surface spraying treatment, further attaching electrostatic treatment agent;

[0029] S5, post-treatment: ultrasonic washing is used to remove the uncured antistatic agent on the surface of the fabric and complete non-destructive cleaning; after cleaning, hot air circulation drying is used for secondary drying;

[0030] S6. Quality inspection: Implement online inspection and multi-point inspection, and cooperate with gas permeability tester and softness tester for comprehensive quality inspection.

[0031] Among them, the bio-based antistatic agent includes glycerol, plant polysaccharides and plant oils, the plant polysaccharides are one or any of alginate and guar gum, the plant oil is one or any of linseed oil and coconut oil, and the ratio of the bio-based antistatic agent to the quaternary ammonium salt is 1:1.

[0032] Glycerin has good lubricity and hygroscopicity, which helps to improve the softness of the fabric and enhance the antistatic effect. Its hydrophilicity can absorb moisture from the surrounding environment, thereby reducing the generation of static electricity. Plant polysaccharides and plant oils, as natural polymers, have good film-forming and adhesion properties, and can effectively form a protective film on the surface of the fabric to increase the antistatic properties of the fabric. Their high hydrophilicity helps to absorb moisture and reduce the accumulation of charge on the surface of the fabric. Plant oil plays a lubricating and protective role in preventing static electricity accumulation, and at the same time contributes to the softness and feel of the fabric. The presence of oil can effectively reduce the friction coefficient and reduce the generation of static electricity. Bio-based antistatic agents can still maintain certain antistatic properties after washing, indicating their durability and effectiveness in actual use.

[0033] As a widely used antistatic agent, quaternary ammonium salt has good electrical conductivity and can effectively neutralize the static charge on the fabric, while bio-based antistatic agents reduce the generation of static electricity by providing moisture and forming a protective film. The combination of the two can complement each other at different levels and improve the overall antistatic performance. By introducing a combination of bio-based antistatic agents and quaternary ammonium salts, the problem of static electricity accumulation on blended fabrics in a dry environment can be effectively reduced, reducing the discomfort and safety hazards caused by static electricity. The use of bio-based ingredients such as glycerin and vegetable oil can make the fabric softer and improve the wearing comfort.

[0034] Among them, in S1, the pH value of the antistatic agent is controlled at 6-8. When adjusting the pH, acid or alkali is slowly added and continuously stirred to ensure that the solution is evenly mixed.

[0035] By controlling the pH value of the antistatic agent within the pH range of 6-8, the active ingredients of the antistatic agent can maintain good solubility and dispersibility to ensure its effectiveness. In actual adjustment, rapid addition of acid or alkali may cause drastic fluctuations in the pH value of the solution, causing degradation or failure of the active ingredients of the antistatic agent. Slow addition helps the pH value in the solution to change gradually, reducing the risk of local over-acidity or over-alkalinity, and ensuring the uniformity and stability of the overall solution. Controlling the pH value at 6-8 can ensure that the antistatic agent is not destroyed during the treatment process, thereby maintaining its antistatic effect on the fabric. On the other hand, under appropriate pH conditions, the antistatic agent can better adhere to the surface of the fabric fiber to form a uniform antistatic protective layer and reduce the generation of static electricity. At the same time, some extremely acidic or alkaline environments may damage blended fabrics. The appropriate pH range can effectively protect the integrity of the fabric fibers.

[0036] In S1, the stirring speed during the dissolution of the antistatic agent is usually controlled between 200-800 revolutions per minute (RPM), and the stirring time is between 10-30 minutes.

[0037] Too low or too high stirring speed will affect the dissolution effect. Through experiments, it has been determined that too low speed (lower than 200RPM): the dissolution effect is not good, the antistatic agent may not be completely dissolved, resulting in the appearance of granular substances in the solution, affecting the subsequent treatment effect; too high speed (higher than 800RPM): it may cause the generation of bubbles in the solution, forming foam, affecting the distribution of the effective ingredients of the antistatic agent in the solution; when the stirring speed range (200-800RPM), stirring can effectively promote the contact between the antistatic agent and the solvent, enhance its solubility, and ensure that the antistatic agent is evenly dissolved in the solution. Moreover, controlling at this speed can reduce the physical damage to the antistatic agent molecules and maintain its chemical activity, thereby ensuring the treatment effect.

[0038] The appropriate stirring time is (10-30 minutes): within 10-30 minutes, it can ensure the full contact between the antistatic agent and water, promote its dissolution and uniform distribution, and stirring within this time range can ensure the effectiveness of the antistatic agent in subsequent processing steps, thereby improving the antistatic properties of blended fabrics.

[0039] Controlling the stirring speed and time helps to evenly distribute the antistatic agent on the surface of the blended fabric, forming a uniform antistatic protective layer and reducing static electricity accumulation. The above stirring conditions can protect the physical properties of the blended fabric and prevent the fabric from fading, damage or reduced comfort due to improper handling. By optimizing the stirring speed and time, the dissolution and coating process of the antistatic agent can be accelerated, thereby improving overall production efficiency and reducing unnecessary waste of time.

[0040] Among them, in S2, a vibration component is added to the soaking pool during the immersion process, and the soaked fabric is vibrated in the soaking pool by the vibration component.

[0041] The introduction of the vibration component can significantly increase the contact between the fabric and the antistatic agent solution in the immersion tank, and promote the penetration of the antistatic agent into the fabric fibers, which makes the antistatic agent easier to be absorbed by the fabric, thereby improving the overall treatment effect. In a static state, bubbles and gaps may form between the fabric and the solution, and vibration can effectively reduce these problems, ensuring that the antistatic agent is more evenly distributed in every part of the fabric. On the other hand, the vibration treatment can evenly stir the antistatic agent solution in the immersion tank to avoid precipitation and stratification, ensuring the uniform distribution of the antistatic agent, so that the treated fabric achieves consistency in antistatic performance. By increasing the movement of the fabric during the immersion process, the antistatic agent is more effectively combined with the fabric fibers, thereby improving the antistatic performance of the fabric.

[0042] In terms of improving the structure and feel of fabrics, vibration may reduce the friction and interaction between fabric fibers, making the fabric softer after soaking and improving the comfort of wearing. At the same time, proper vibration treatment can prevent the deformation and wrinkles of the fabric. Under the vibration intensity, vibration treatment helps to reduce the physical damage that the fabric may suffer during the treatment process and maintain its original physical properties. Vibration can accelerate the absorption of antistatic agents, which may shorten the overall processing time and make the production process more efficient.

[0043] Among them, in S3, the multi-stage temperature and pressure shaping includes a pretreatment stage, a main shaping stage, and a cooling and stabilization stage. The temperature in the pretreatment stage is 160℃-180℃, the pressure is 0.5-2Mpa, and the time is 5-10 minutes; in the main shaping stage, the temperature is 180℃-210℃, the pressure is 2-4Mpa, and the time is 10-15 minutes; in the cooling and stabilization stage, the temperature is 120℃-160℃, the pressure is 1-2MPa, and the time is 5-8 minutes.

[0044] Under higher temperature and pressure, the fibers in the blended fabric will relax, thereby achieving pre-setting. This relaxation can help the interaction between the fibers better adapt to subsequent processing, reduce internal stress, and prevent deformation in the main setting stage. Antistatic agents will undergo physical or chemical reactions at a certain temperature. The heat energy provided in the pretreatment stage helps activate these antistatic agents, making it easier for them to penetrate into the fiber and improve the antistatic performance.

[0045] Through this staged temperature and pressure shaping method, gradual heating and pressurization allow the fibers to be properly relaxed and reshaped, thereby enhancing the wrinkle resistance and shape stability of the fabric, improving the permeability and binding force of the antistatic agent, forming an effective antistatic protective layer, significantly improving the antistatic effect of the fabric, and improving the smoothness, glossiness and touch of the fabric. The staged cooling process helps to maintain the shape and structure of the fabric, ensuring the durability of the antistatic performance during use.

[0046] Among them, in S5, the washing temperature during ultrasonic washing is controlled at 30-40°C, and the drying temperature after washing is controlled at 60-80°C.

[0047] Within the temperature range of 30-40℃, ultrasound can produce a strong cavitation effect, effectively removing dirt, grease and impurities on the surface and inside of blended fabrics. The cleaned fabrics are more conducive to the adsorption and penetration of subsequent antistatic treatment agents, improving the treatment effect. The temperature of 30-40℃ can protect the fiber structure of blended fabrics, reduce physical damage to the fabrics, and maintain the overall performance and appearance of the fabrics. It is very important; under dry conditions of 60-80℃, antistatic agents can better penetrate and combine with fibers to form a stable protective layer, and can also reduce static electricity accumulation, avoid dust adsorption or static electricity discharge caused by static electricity, and ensure the safety and stability of fabrics during use.

[0048] Among them, in S6, online detection includes temperature monitoring, pressure monitoring and material status monitoring, and the specific equipment is infrared temperature sensor, pressure sensor and image acquisition system.

[0049] Infrared temperature sensors can monitor the temperature changes of materials during antistatic treatment in real time to ensure that they are within the optimal operating range (usually 30-40°C for washing and 60-80°C for drying). By accurately monitoring and adjusting the temperature, the antistatic agent can be evenly distributed in the blended fabric, enhancing its durability and effect. Real-time temperature monitoring can detect overheating in time, prevent fabric damage or shrinkage caused by excessive temperature, and ensure the appearance and performance of the fabric after treatment.

[0050] The infrared temperature sensor, pressure sensor and image acquisition system are all existing devices, and the specific models are FL I RA655sc infrared temperature sensor, Bourdon 6000Ser i es pressure sensor and IDS uEye SE image acquisition system.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for antistatic treatment of blended fabrics, characterized in that: The processing steps include: S1. Preparation of antistatic agent: a. Select quaternary ammonium salt and bio-based antistatic agent to prepare mixed bio-based antistatic agent; b. Use ultrasonic assisted dissolution method to mix and dissolve the prepared mixed bio-based antistatic agent; c. Adjust the pH value of the antistatic agent; d. Prepare antistatic agent solution: dissolve the antistatic agent in water or other solvent at a concentration of 0.5%-2.0% (mass ratio); S2, antistatic immersion treatment: put the antistatic agent solution prepared above into the immersion tank, and immerse the fabric blended with antistatic fiber in the antistatic agent, start the heating component in the tank, maintain the solution temperature at 30-40° C., and maintain the immersion treatment for 45-60 minutes; S3, heat curing treatment: a. Use low temperature drying method (40-60℃) for preliminary drying, long-term drying, use hot air circulation method to clamp the opened fabric, and perform double-sided synchronous drying treatment; b. Use multi-stage temperature pressure shaping method for post-stage heat treatment, use double-sided metal plate hot plate to press on both sides of the fabric to complete the heat curing treatment; S4, secondary surface treatment: using nano antistatic agent for surface spraying treatment, further attaching electrostatic treatment agent; S5, post-treatment: ultrasonic washing is used to remove the uncured antistatic agent on the surface of the fabric and complete non-destructive cleaning; after cleaning, hot air circulation drying is used for secondary drying; S6. Quality inspection: Implement online inspection and multi-point inspection, and cooperate with gas permeability tester and softness tester for comprehensive quality inspection.

2. The process for antistatic treatment of blended fabrics according to claim 1, characterized in that: The bio-based antistatic agent includes glycerol, plant polysaccharides and plant oils, wherein the plant polysaccharides are one or any of alginate and guar gum, and the plant oil is one or any of linseed oil and coconut oil, and the ratio of the bio-based antistatic agent to the quaternary ammonium salt is 1:

1.

3. The process for antistatic treatment of blended fabrics according to claim 2, characterized in that: In S1, the pH value of the antistatic agent is controlled at 6-8. When adjusting the pH, acid or alkali is slowly added and stirred continuously to ensure that the solution is evenly mixed.

4. The process for antistatic treatment of blended fabrics according to claim 3, characterized in that: In S1, the stirring speed during the dissolution of the antistatic agent is generally controlled between 200-800 revolutions per minute (RPM), and the stirring time is between 10-30 minutes.

5. The process for antistatic treatment of blended fabrics according to claim 1, characterized in that: In S2, a vibration component is added to the soaking tank during the immersion process, and the soaked fabric is vibrated in the soaking tank by the vibration component.

6. The process for antistatic treatment of blended fabrics according to claim 1, characterized in that: In S3, the multi-stage temperature and pressure shaping includes a pretreatment stage, a main shaping stage and a cooling and stabilization stage. The temperature in the pretreatment stage is 160°C-180°C, the pressure is 0.5-2Mpa, and the time is 5-10 minutes; in the main shaping stage, the temperature is 180°C-210°C, the pressure is 2-4Mpa, and the time is 10-15 minutes; in the cooling and stabilization stage, the temperature is 120°C-160°C, the pressure is 1-2MPa, and the time is 5-8 minutes.

7. The process for antistatic treatment of blended fabrics according to claim 1, characterized in that: In S5, the washing temperature during ultrasonic washing is controlled at 30-40°C, and the drying temperature after washing is controlled at 60-80°C.

8. The process for antistatic treatment of blended fabrics according to claim 1, characterized in that: In S6, the online detection includes temperature monitoring, pressure monitoring and material status monitoring, and the specific equipment is an infrared temperature sensor, a pressure sensor and an image acquisition system.

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