Antistatic high-gloss polyester fabric and processing technology

Abstract

The invention relates to the field of textiles, and discloses an antistatic high-gloss polyester fabric which comprises bio-based polyester fibers and a coating material, the coating material is arranged on the outer surfaces of the bio-based polyester fibers through a solution impregnation method, and the bio-based polyester fibers are formed by polymerizing bio-based terephthalic acid and bio-based ethylene glycol. The coating material is selected from one or more of sodium alginate, vegetable oil, talcum powder and kaolin; the processing technology of the antistatic high-gloss polyester fabric comprises the following steps: S1, carrying out polymerization reaction on bio-based terephthalic acid and bio-based ethylene glycol to prepare bio-based polyester resin; the bio-based polyester fiber and the natural antistatic agent are adopted as key raw materials, so that the environment burden is lower in the production process, bio-based polyester is synthesized from terephthalic acid and ethylene glycol from renewable resources, the consumption of petroleum resources is reduced, the carbon footprint is reduced, and the environment-friendly characteristic of the fabric is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to an antistatic high-gloss polyester fabric and a processing technology. Background Art

[0002] As global environmental issues become increasingly severe, environmental protection and sustainable development have become the main goals of technological innovation in various industries, especially in the textile industry. Traditional textile production, especially the production of polyester fabrics, usually relies on petroleum resources as the main raw material. Its production process not only consumes a lot of energy, but also produces a large amount of carbon dioxide emissions, resulting in serious impacts on the environment. Therefore, how to reduce the environmental burden of textiles and reduce dependence on non-renewable resources has become an important direction for technological innovation in the industry.

[0003] Polyester fabric, as a synthetic fiber fabric widely used in clothing, home textiles and industrial fields, is mainly synthesized from petroleum-based terephthalic acid (PTA) and ethylene glycol (EG). In the production process, polyester fiber not only consumes a large amount of petroleum resources, but also produces high carbon emissions, which puts great pressure on the environment.

[0004] In terms of surface treatment of polyester fabrics, the existing technologies mostly use chemical coatings or additives to improve their antistatic properties and glossiness, but these methods often involve harmful chemicals or are easily ineffective in high temperature and humid environments. In addition, the coating treatment process in the existing technology often has certain environmental pollution problems, such as the emission of volatile organic compounds (VOCs), which causes air pollution and waste of resources. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an antistatic high-gloss polyester fabric and a processing technology, which solves the problems of static electricity, environmental burden and glossiness in the preparation process of the prior polyester fabric.

[0006] To achieve the above objectives, the present invention is implemented through the following technical scheme: an antistatic high-gloss polyester cloth fabric, comprising a bio-based polyester fiber and a coating material, wherein the coating material is arranged on the outer surface of the bio-based polyester fiber by a solution impregnation method, wherein the bio-based polyester fiber is polymerized from bio-based terephthalic acid and bio-based ethylene glycol, and the coating material is one or more selected from sodium alginate, vegetable oil, talcum powder, and kaolin.

[0007] A processing technology for antistatic high-gloss polyester fabric comprises the following steps:

[0008] S1, preparing a bio-based polyester resin by polymerizing bio-based terephthalic acid and bio-based ethylene glycol;

[0009] S2, spinning the bio-based polyester resin through a melt spinning process to obtain bio-based polyester filaments;

[0010] S3, mixing the natural antistatic agent with water at a mass ratio of 1:10 to 1:100 to form an antistatic solution, and evenly coating the solution on the surface of the polyester filament by dipping;

[0011] S4, using a solution dipping method to evenly coat the coating material on the surface of the polyester fiber;

[0012] S5, the coated polyester filament is thermally cured;

[0013] S6, performing heat setting treatment on the coated polyester filament;

[0014] S7, cutting, winding and shaping are performed to obtain antistatic high-gloss polyester fabric.

[0015] Preferably, the natural antistatic agent in step S3 includes but is not limited to sodium alginate, mannitol or talc.

[0016] Preferably, in the step S2, the spinning temperature is 270°C-290°C, the draft ratio is 2.5 times-5 times, and the spinning speed is 3000m / min-4500m / min.

[0017] Preferably, the amount of coating material used in step S4 is controlled at 0.5 g / m 2 -5g / m 2 .

[0018] Preferably, in step S5, the curing temperature is controlled at 160° C.-200° C., and the curing time is 2-5 min.

[0019] Preferably, in the step S6, the heat setting treatment temperature is set to 180° C.-220° C., and the setting time is 10-30 seconds.

[0020] Preferably, the thickness of the coating material in step S4 is controlled to be 0.5-5 um.

[0021] Preferably, in step S1, the polymerization reaction temperature is controlled at 260° C.-280° C., the reaction pressure is 0.5 MPa-1.0 MPa, and the polymerization time is 4-6 hours.

[0022] The present invention provides an antistatic high-gloss polyester fabric and a processing technology, which has the following beneficial effects:

[0023] The present invention adopts bio-based polyester fiber and natural antistatic agent as key raw materials, so that the polyester cloth fabric of the present invention has a lower environmental burden during the production process. The bio-based polyester is synthesized using terephthalic acid and ethylene glycol from renewable resources, which reduces the consumption of petroleum resources and reduces the carbon footprint, thereby enhancing the environmental protection characteristics of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic flow chart of the preparation process steps of the present invention. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 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.

[0026] Example:

[0027] An embodiment of the present invention provides an antistatic high-gloss polyester fabric, comprising a bio-based polyester fiber and a coating material, wherein the coating material is arranged on the outer surface of the bio-based polyester fiber by a solution impregnation method, wherein the bio-based polyester fiber is polymerized from bio-based terephthalic acid and bio-based ethylene glycol, and the coating material is one or more selected from sodium alginate, vegetable oil, talc, and kaolin.

[0028] Specifically, bio-based polyester fiber is obtained through the polymerization reaction of bio-based terephthalic acid (Bio-PTA) and bio-based ethylene glycol (Bio-EG). Both Bio-PTA and Bio-EG are derived from renewable plant resources, such as corn and sugarcane, and are prepared through fermentation and chemical conversion, which meets the requirements of environmental protection and sustainable development.

[0029] The polymerization process is controlled within a temperature range of 260°C to 280°C, a reaction pressure of 0.5MPa to 1.0MPa, and a polymerization time of 4 to 6 hours. During the reaction, an esterification catalyst (such as tetraphenyltitanium or zinc acetate) is added in an appropriate amount to accelerate the esterification reaction and increase the molecular weight of the polyester. By precisely controlling the reaction temperature and pressure, a bio-based polyester resin with a regular molecular structure and excellent physical properties can be prepared.

[0030] The prepared bio-based polyester resin is melt-spun to form polyester filaments. The spinning temperature is set between 270°C and 290°C, the draft ratio is 2.5 to 5 times, and the spinning speed is 3000 m / min to 4500 m / min. The precise control of the draft ratio and spinning speed ensures the crystallinity and surface smoothness of the polyester filaments, thus providing a good foundation for subsequent coating treatment.

[0031] The coating material is a key part to achieve the antistatic and high gloss properties of the fabric. In the present invention, the coating material is selected from one or more of sodium alginate, vegetable oil, talcum powder, and kaolin, and is coated on the outer surface of the bio-based polyester fiber by solution dipping.

[0032] Sodium alginate is a natural polysaccharide with excellent film-forming and antistatic properties. It exhibits good dispersibility and adhesion in aqueous solution, and can form a uniform conductive film on the surface of polyester fibers to reduce static electricity accumulation.

[0033] The selected vegetable oils include but are not limited to linseed oil, olive oil, etc. These vegetable oils can form a smooth coating on the fiber surface, improve the gloss of the fabric, and provide certain flexibility and wear resistance for the coating.

[0034] Talc is a mineral material with natural conductivity and lubricity that can improve the antistatic properties of fabrics while forming a fine protective layer on the surface of polyester fibers to improve durability.

[0035] Kaolin is a natural mineral with good adsorption and dispersion properties. The coating formed on the surface of polyester fiber can effectively reduce static electricity accumulation, improve the surface smoothness of the fiber, and enhance the gloss effect.

[0036] Please see attached Figure 1 , a processing technology for antistatic high gloss polyester fabric, comprising the following steps:

[0037] S1, preparing a bio-based polyester resin by polymerizing bio-based terephthalic acid and bio-based ethylene glycol;

[0038] Specifically, in this step, bio-based terephthalic acid (B i o-PTA) and bio-based ethylene glycol (B io-EG) are first mixed in a certain molar ratio (usually 1:1), and an appropriate amount of catalyst, such as tetraphenyl titanium or zinc acetate, is added to promote the esterification reaction. The reaction is carried out at a temperature of 260°C to 280°C, the reaction pressure is controlled between 0.5MPa and 1.0MPa, and the reaction time is 4 to 6 hours. In this process, bio-based terephthalic acid and bio-based ethylene glycol undergo esterification to generate bio-based polyester resin. In order to increase the molecular weight of the polyester resin, excess water can be removed by a pressurized dehydration or a decompressed dehydration process after the reaction is completed, thereby increasing the degree of polymerization and molecular weight of the resin. The bio-based polyester resin finally obtained has good thermal stability and good fiber formation performance, providing high-quality raw materials for subsequent spinning processes.

[0039] S2, spinning the bio-based polyester resin through a melt spinning process to obtain bio-based polyester filaments;

[0040] Specifically, in this step, the bio-based polyester resin obtained by the polymerization reaction is first heated to its molten state, and the melting temperature is usually set between 270°C and 290°C. The molten polyester resin enters the spinning nozzle of the spinning machine and is ejected through the tiny spinning holes under the action of high-speed tensile force to form polyester filaments. In order to ensure the uniformity and strength of the fiber, the draft ratio during the spinning process is usually controlled between 2.5 and 5 times to ensure that the fiber achieves the expected physical properties. The spinning speed needs to be adjusted according to the specific production equipment, usually controlled between 3000 meters / minute and 4500 meters / minute to ensure the fineness and uniformity of the filament.

[0041] S3, mixing the natural antistatic agent with water at a mass ratio of 1:10 to 1:100 to form an antistatic solution, and evenly coating the solution on the surface of the polyester filament by dipping;

[0042] Specifically, first select a suitable natural antistatic agent, such as sodium alginate, mannitol or talc. According to the properties of the selected antistatic agent, mix it with water at a certain mass ratio (1:10 to 1:100), and stir it thoroughly to ensure that the antistatic agent is completely dissolved or evenly dispersed in the water to form a stable antistatic solution. The specific solution ratio is optimized according to the solubility of the antistatic agent and the desired effect.

[0043] Next, the polyester filament is dipped in the solution. The polyester filament is completely immersed in the antistatic solution, and the dipping time is usually 10 to 30 seconds, ensuring that the antistatic solution evenly penetrates the fiber surface and forms a thin film on the filament surface. In order to control the uniformity of the coating, the impregnated polyester filament can be properly mechanically squeezed or centrifuged to remove excess solution, ensure consistent coating thickness, and avoid solution accumulation.

[0044] S4, using a solution dipping method to evenly coat the coating material on the surface of the polyester fiber;

[0045] Specifically, first prepare a coating material solution. The coating material can be composed of natural plant or mineral source materials such as sodium alginate, vegetable oil, talcum powder, kaolin, etc., used alone or mixed. According to the characteristics of different coating materials, use appropriate solvents, such as water or other environmentally friendly solvents, to dissolve or disperse the coating material to form a coating solution with appropriate concentration. The concentration of the coating solution needs to be adjusted according to the properties of the selected material and the required coating thickness, and is generally controlled at 0.5% to 10% (w / v).

[0046] The polyester filament is then immersed in the coating solution by dipping to ensure that the surface of the polyester fiber is evenly covered with the coating material. The time the polyester filament is immersed in the coating solution is usually controlled to be between 5 and 30 seconds to ensure that the coating material is evenly attached to the fiber surface. In order to control the uniformity of the coating and avoid the accumulation of too much solution, an extrusion roller or a spin-drying device can be used to remove the excess portion of the coating solution, thereby ensuring uniform thickness and distribution of the coating. The coated polyester filament needs to be properly dried to remove the solvent and promote a firm bond between the coating and the fiber surface.

[0047] Through this step, the coating material is evenly coated on the surface of the polyester fiber to form a protective coating, which not only gives the polyester fiber antistatic properties, but also provides a certain gloss effect, improving the appearance and touch of the fabric.

[0048] S5, the coated polyester filament is thermally cured;

[0049] Specifically, first, the coated polyester filament is sent into a heat curing furnace or heat setting equipment through a hot air or hot roller heating device. The heating temperature is usually set between 160°C and 200°C, and the specific temperature should be optimized according to the characteristics of the coating material. Too high a temperature may cause the coating to melt or be damaged, so it needs to be controlled within an appropriate range. The heat curing time is usually 2 to 5 minutes, and sufficient heating time allows the coating material to completely react with the fiber surface and solidify into shape.

[0050] The role of thermal curing is to make the coating material form a solid film on the surface of the polyester filament, enhance the adhesion and durability of the coating, and prevent the coating from falling off or peeling off during subsequent processing or use. In addition, the thermal curing process can also help the molecular structure of the coating material to cross-link, enhancing its antistatic effect and anti-fouling performance.

[0051] S6, performing heat setting treatment on the coated polyester filament;

[0052] Specifically, first, the heat-cured polyester filament is fed into a heat-setting device. The heat-setting device is usually a heat-setting furnace or roller device with an adjustable temperature control system. The temperature of the setting process is set between 180°C and 220°C, and the specific temperature needs to be optimized according to the characteristics of the polyester filament and the stability of the coating material used. Too low a setting temperature may not effectively improve the glossiness, while too high a temperature may affect the structural stability of the fiber. Therefore, precise control of temperature is the key in this step.

[0053] During the heat setting process, polyester filaments need to be heated for a certain period of time, usually between 10 and 30 seconds. If the setting time is too short, the fiber may not be completely set, while if the setting time is too long, the fiber shape may change or be damaged. During the setting process, polyester filaments will deform and relax at high temperatures, and the original stress in the fiber will be released, so that the fiber shape tends to be stable.

[0054] In addition, heat setting will promote a stronger bond between the coating material and the fiber surface, while further enhancing the gloss of the polyester fiber, making its surface smoother and presenting an ideal high-gloss effect. The setting process can effectively eliminate the internal stress of the polyester fiber, improve the feel and touch of the fiber, and enhance its wrinkle resistance and comfort during subsequent use.

[0055] S7, cutting, winding and shaping are performed to obtain antistatic high-gloss polyester fabric.

[0056] Specifically, first, the heat-set polyester filaments are fed into the cutting equipment and cut according to the required fabric width and length using high-precision cutting tools. The cutting process needs to ensure that the filaments are cut evenly to avoid quality problems in subsequent processing caused by uneven cutting. The cut polyester filaments can be further wound as needed.

[0057] Next, the cut polyester filaments will be wound into large rolls, which is convenient for subsequent processing and transportation. During the winding process, it is necessary to pay attention to controlling the winding tension to avoid the filaments being broken or bent due to excessive tension, so as to ensure that the polyester filaments after winding maintain good shape and quality.

[0058] In addition, polyester filaments may need to be shaped before winding. The shaping equipment mechanically stretches or adjusts the filaments to achieve uniform size and neat appearance. During the shaping process, the relaxation degree and stretching ratio of the polyester filaments must be precisely controlled to ensure that the final fabric surface is smooth and has a good touch.

[0059] Finally, after cutting, winding and shaping, the obtained polyester fabric can be further processed according to customer needs, such as dyeing, printing, embossing, etc., and finally produce antistatic high-gloss polyester fabric that meets market requirements. This fabric has excellent antistatic performance, gloss effect and durability, and is suitable for clothing, home furnishing, industry and other fields, especially in electronic product packaging and high-end home furnishing fabrics with high antistatic requirements, and has broad application prospects.

[0060] 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. Antistatic high gloss polyester fabric, characterized by: It includes bio-based polyester fiber and coating material, wherein the coating material is arranged on the outer surface of the bio-based polyester fiber by solution impregnation method, the bio-based polyester fiber is polymerized by bio-based terephthalic acid and bio-based ethylene glycol, and the coating material is one or more selected from sodium alginate, vegetable oil, talcum powder, and kaolin.

2. A processing technology for antistatic high-gloss polyester fabric, according to the antistatic high-gloss polyester fabric of claim 1, characterized in that: The following steps are involved: S1, preparing a bio-based polyester resin by polymerizing bio-based terephthalic acid and bio-based ethylene glycol; S2, spinning the bio-based polyester resin through a melt spinning process to obtain bio-based polyester filaments; S3, mixing the natural antistatic agent with water at a mass ratio of 1:10 to 1:100 to form an antistatic solution, and evenly coating the solution on the surface of the polyester filament by dipping; S4, using a solution dipping method to evenly coat the coating material on the surface of the polyester fiber; S5, the coated polyester filament is thermally cured; S6, performing heat setting treatment on the coated polyester filament; S7, cutting, winding and shaping are performed to obtain antistatic high-gloss polyester fabric.

3. The processing technology of antistatic high gloss polyester fabric according to claim 2 is characterized in that: The natural antistatic agent in step S3 includes but is not limited to sodium alginate, mannitol or talc.

4. The processing technology of antistatic high gloss polyester fabric according to claim 2 is characterized in that: In the step S2, the spinning temperature is 270°C-290°C, the draft ratio is 2.5 times-5 times, and the spinning speed is 3000m / min-4500m / min.

5. The processing technology of antistatic high gloss polyester fabric according to claim 2 is characterized in that: The amount of coating material used in step S4 is controlled to be 0.5 g / m 2 -5g / m 2 .

6. The processing technology of antistatic high gloss polyester fabric according to claim 2 is characterized in that: In the step S5, the curing temperature is controlled at 160° C.-200° C., and the curing time is 2-5 minutes.

7. The processing technology of antistatic high gloss polyester fabric according to claim 2 is characterized in that: In the step S6, the heat setting treatment temperature is set to 180° C.-220° C., and the setting time is 10-30 seconds.

8. The processing technology of antistatic high gloss polyester fabric according to claim 2 is characterized in that: In the step S4, the thickness of the coating material is controlled to be 0.5-5 um.

9. The processing technology of antistatic high gloss polyester fabric according to claim 2, characterized in that: In the step S1, the polymerization reaction temperature is controlled at 260° C.-280° C., the reaction pressure is 0.5 MPa-1.0 MPa, and the polymerization time is 4-6 hours.

Images