Light-gram-weight high-support polyester fiber space cloth and preparation method thereof

Abstract

The invention relates to the technical field of polyester fiber mesh cloth, and particularly discloses light-gram-weight high-support polyester fiber space cloth and a preparation method thereof. A light-gram-weight high-support polyester fiber space cloth is formed by an upper layer of polyester fiber mesh cloth and a lower layer of polyester fiber mesh cloth through middle connecting yarn and is obtained by weaving modified polyester filaments. The modified polyester filament is prepared by the following steps: S1, plasma treatment; s2, dipping treatment; and S3, girdling treatment. The preparation method comprises the following steps: warping: arranging the modified polyester filaments on a pan head to prepare for weaving; preparing on a loom, taking eight surface and bottom warping pan heads and two middle wire drawing and warping pan heads, totally 10, and mounting the pan heads on the loom; and after each pan head is subjected to the procedures of yarn splitting, yarn threading and yarn loosening, the face and bottom weaving density and the middle wiredrawing distance and density are set for weaving. The supporting distance between the upper layer and the lower layer of the space cloth is remarkably increased, the overall gram weight of the space cloth is reduced, and the excellent supporting performance can still be achieved.

Description

Technical Field

[0001] This application relates to the field of polyester fiber mesh technology, and more specifically, to a lightweight, high-support polyester fiber space fabric and its preparation method. Background Technology

[0002] Space fabric, a new type of polyester fiber mesh, differs from ordinary plain weave and warp-knitted mesh fabrics, which are only single-layered. Space fabric is a mesh fabric with a three-dimensional spatial structure, made by connecting two layers of polyester fiber mesh fabric with yarns in between. The core feature of space fabric lies in its three-dimensional structure, which can form a stable three-dimensional space, providing support and cushioning for products.

[0003] Currently, space fabric is widely used as a base material for surfboards, inflatable mattresses, yoga mats, and other inflatable materials. With consumers increasingly demanding portability, lightweighting has become a significant development trend for space fabric products, especially in the areas of inflatable surfboards and portable yoga mats, where users prefer lighter and more convenient products. Simultaneously, while pursuing lightweighting, the market's requirements for product support performance have not decreased. Inflatable mattresses, gymnastics mats, and similar products need to possess good pressure resistance and resilience to provide a comfortable support experience. This technical demand for "lightweight yet high-support" has become a major direction for industry development.

[0004] The maximum distance between the upper and lower layers of conventional space fabric products is only about 35cm, with a weight of 1500gsm. If the distance between the space fabric fibers is to be increased further and the overall weight of the space fabric is to be reduced, the support performance of the space fabric will be difficult to guarantee. Therefore, there is an urgent need to propose a solution to solve the above technical problems. Summary of the Invention

[0005] In order to significantly increase the support distance between the upper and lower layers of the space fabric while reducing its overall weight and ensuring excellent support performance, this application provides a lightweight, high-support polyester fiber space fabric and its preparation method.

[0006] In a first aspect, this application provides a lightweight, high-support polyester fiber space fabric, employing the following technical solution: A lightweight, high-support polyester fiber space fabric is composed of two layers of polyester fiber mesh connected by a connecting yarn in the middle, and is woven using modified polyester filaments; the modified polyester filaments are prepared by the following method: S1. Plasma treatment: The polyester filament raw material is placed in the reaction chamber of the plasma cleaner. After removing impurities from the chamber, working gas is introduced and then discharge treatment is performed. After completion, pretreated polyester filament is obtained. S2. Impregnation treatment: The pretreated polyester filament obtained in step S1 is impregnated in an aqueous resin nanocomposite emulsion. After impregnation, it is taken out and dried to obtain a polyester filament intermediate. S3. Ring cutting: The polyester filament intermediate obtained in step S2 is passed through a ring cutter to perform surface ring cutting, and the ring cutter is adapted to the radial cross section of the polyester filament raw material to finally obtain modified polyester filament.

[0007] By adopting the above technical solution, in the preparation of modified polyester filaments, the polyester filaments are placed in a plasma cleaner and subjected to discharge treatment in a specific working gas environment. The high-energy particles in the plasma bombard the surface of the polyester filaments, producing an etching effect and introducing oxygen-containing groups (such as hydroxyl and carboxyl groups), which significantly improves the hydrophilicity and reactivity of the polyester filament surface. The uneven grooves formed make the fiber surface rough, creating a good bonding interface for the subsequent impregnation treatment of the aqueous resin nanocomposite emulsion. Then, the pretreated polyester filaments obtained after plasma treatment are impregnated in the aqueous resin nanocomposite emulsion. Since the fiber surface has been activated, the aqueous resin can better wet and penetrate into the surface and internal microporous structure of the polyester filaments. After drying and curing, a uniform resin nanocomposite coating is formed on the surface of the polyester filaments. Finally, the impregnated polyester filaments are passed through a ring cutter for surface ring cutting, so that only the resin nanocomposite embedded in the nanogrooves or microgrooves remains on the surface of the polyester filaments. When the modified polyester filaments are used to weave space fabric, the mechanical interlocking and friction between the modified polyester filaments are significantly enhanced. At the same time, the resin nanocomposite on the surface of the modified fiber can not only strengthen the interfacial interlocking effect at the intersection of the fiber filaments, but also better disperse stress and enhance support performance. Thus, even with a significant increase in the support distance between the upper and lower layers of the space fabric and a reduction in the overall weight of the space fabric, it can still exhibit excellent support performance, ultimately resulting in a lightweight, high-support polyester fiber space fabric with better application quality.

[0008] Preferably, in the preparation of the modified polyester filament, the discharge treatment in step S1 has a discharge power of 200-300W, a treatment time of 400-600s, and a working pressure of 40-100pa.

[0009] By adopting the above technical solution, a discharge power of 200-300W can ensure sufficient energy for plasma active particles while avoiding damage to the polyester filament surface caused by excessive power; a processing time of 400-600s ensures sufficient reaction between the plasma and the fiber surface; and a working pressure of 40-100pa results in a longer mean free path for electrons, enabling them to obtain higher energy and thus generate more high-energy electrons and active free radicals. The selection and combination of the above control parameters achieves efficient surface modification while avoiding damage to the polyester filament, and lays a good foundation for subsequent impregnation and ring-cutting processes.

[0010] Preferably, in the preparation of the modified polyester filament, the aqueous resin nanocomposite emulsion in step S2 is made from raw materials comprising the following parts by weight: 50-70 parts of waterborne polyurethane resin; 10-15 parts of nano-reinforced material; Dispersant 0.5-1.5 parts; Defoamer 0.2-1 part; Leveling agent 0.1-0.5 parts; Thickener 0.1-0.5 parts; 10-20 parts water.

[0011] By adopting the above technical solution, waterborne polyurethane resin, as the main film-forming material of the system, possesses excellent flexibility, abrasion resistance, and adhesive strength. The nano-reinforcing material, through its large specific surface area and surface effect, forms a strong interfacial interaction with the polyurethane resin, thereby creating a stable coating structure on the surface of the polyester filament. The selection and combination of dispersants, defoamers, leveling agents, and thickeners further ensures uniform adhesion of the emulsion, resulting in a relatively dense final coating structure. Furthermore, after the application of the above-mentioned waterborne resin nanocomposite emulsion, the resin nanocomposite remaining on the fiber surface can fully utilize the synergistic effect of the polyurethane resin and the nano-reinforcing material to achieve excellent and stable corresponding effects, successfully realizing efficient modification of polyester filament and providing a reliable technical guarantee for the preparation of lightweight, high-support space fabrics.

[0012] Preferably, the nano-reinforcing material is composed of nano-silica, graphene oxide and nano-cellulose whiskers, and the weight ratio of nano-silica, graphene oxide and nano-cellulose whiskers is (5-10):1:(1-3).

[0013] By adopting the above technical solution, nano-silica, as the main reinforcing phase, has a high specific surface area and excellent filling effect, which can effectively fill the micropore defects in the polymer matrix. Moreover, its abundant silanol groups can form hydrogen bonds with polyurethane molecular chains, enhancing the interfacial bonding force. Graphene oxide, with its huge specific surface area and two-dimensional planar structure, forms a "bridge" in the matrix. The hydroxyl groups on the surface of nano-cellulose whiskers can form a hydrogen bond network with polyurethane molecular chains, and at the same time generate strong interfacial interactions with nano-silica and graphene oxide. The three nanomaterials form a three-dimensional cross-linked network structure in the polyurethane matrix through hydrogen bonds, van der Waals forces and possible chemical bonding between surface functional groups, forming a multi-scale reinforcement system of "point-surface-line". This allows for better stress dispersion and enhanced support performance at the intersection of modified polyester filaments, ultimately resulting in a lightweight, high-support polyester fiber space fabric with excellent application quality.

[0014] Preferably, the weight ratio of the nano-silica, graphene oxide and nano-cellulose whiskers is 8:1:2.

[0015] By adopting the above technical solution, the coordinated effect of nano-silica, graphene oxide and nano-cellulose whiskers is better, thus ensuring that the modified polyester filaments obtained can be used to make high-quality lightweight high-support polyester fiber space fabric.

[0016] Preferably, the basis weight of the lightweight, high-support polyester fiber space fabric is 1150-1250 gsm.

[0017] By adopting the above technical solutions, compared to the traditional 1500gsm standard for space fabrics, the 1150-1250gsm range achieves a weight reduction of 16.7%-23.3%. This lightweight effect directly translates into improved product portability, making it particularly suitable for applications requiring frequent carrying, such as inflatable surfboards and portable yoga mats. Simultaneously, this weight range, while achieving lightweighting, also allows the modified polyester filaments to exhibit excellent support properties, thus achieving a balance between "lightweight and high support."

[0018] Preferably, the distance between the upper and lower layers of polyester fiber mesh is 45-55cm.

[0019] By adopting the above technical solutions, the 45-55cm distance design, while ensuring support performance, combined with modified polyester filaments, helps to reduce the basis weight. At the same time, the 45-55cm three-dimensional spatial distance enables the spatial fabric to form a stable three-dimensional structure. Compared with the traditional maximum distance of 35cm, this increased spatial distance can form a more effective three-dimensional support system, allowing the product to better disperse stress when subjected to pressure, avoiding deformation or damage caused by local stress concentration, and making it more conducive for the modified polyester filaments to play their role, thereby making the support performance of the spatial fabric better.

[0020] Secondly, this application provides a method for preparing a lightweight, high-support polyester fiber space fabric, employing the following technical solution: A method for preparing a lightweight, high-support polyester fiber space fabric includes the following steps: (1) Warping: The modified polyester filaments are arranged on the warp head to prepare for weaving; (2) Machine preparation: Take 8 face and bottom warping heads and 2 middle drawing warping heads, for a total of 10 heads, and install the heads onto the loom; (3) After each yarn splitting-threading-loosening process, the weaving density of the surface and bottom and the middle drawing distance and density are set for each yarn head to obtain a lightweight high-support polyester fiber space fabric.

[0021] By adopting the above technical solution, warping is a key preparatory step in organizing the modified polyester filaments onto the warp heads. Its core function is to unify the warp tension, ensure uniform arrangement, and determine the warp length and width. Eight face and bottom warp heads are responsible for weaving the upper and lower layers of polyester fiber mesh, while two intermediate drawing warp heads are specifically used for weaving the connecting yarns, achieving independent control of the face and bottom structure and the connecting structure. The multi-warp head configuration and optimized weaving parameters reduce warp head changing and downtime, improving equipment utilization and production efficiency. Through tension control in the warping process and precise parameter setting in the weaving process, the structural stability and performance consistency of the space fabric are ensured. Thus, the above preparation method not only has strong industrial production applicability but also produces high-quality, stable, lightweight, high-support polyester fiber space fabric.

[0022] In summary, this application has the following beneficial effects: This application utilizes specially prepared modified polyester filaments to weave a lightweight, high-support polyester fiber space fabric consisting of two layers of polyester fiber mesh connected by a connecting yarn in the middle. This significantly increases the support distance between the upper and lower layers of the space fabric and reduces the overall weight of the space fabric, while still maintaining excellent support performance. This achieves a better technical goal of "lightweight and high support" and has significant market competitiveness. Detailed Implementation

[0023] The present application will be further described in detail below with reference to preparation examples, embodiments and comparative examples.

[0024] Unless otherwise specified, all raw materials used in the preparation examples, embodiments and comparative examples of this application are commercially available.

[0025] The polyester filament raw material used is 75D / 72F semi-dull DTY polyester filament; The waterborne polyurethane resin was purchased from Huaxia Chemical's waterborne polyurethane resin HX-3028. Nano-silica was purchased from Evonik's Degussa AEROSIL R972 industrial grade silica. The graphene oxide was purchased from Angxing New Carbon Materials Changzhou Co., Ltd. as graphene oxide GO1211; The nanocellulose whiskers were purchased from Zhongke Leiming (Beijing) Technology Co., Ltd., with a diameter of 30nm and a length of 150nm. The dispersant was purchased from BYK161 dispersant. The defoamer was purchased from BYK-024 defoamer. The leveling agent was purchased from Rohm and Haas RM-2020 waterborne polyurethane leveling agent; The thickener was purchased from Rohm and Haas RM-2020NPR thickener. Preparation examples of raw materials and / or intermediates

[0026] Preparation Example 1 A modified polyester filament is prepared by the following method: S1. Plasma treatment: The polyester filament raw material is placed in the reaction chamber of the plasma cleaner. After removing impurities from the chamber, working gas is introduced and then discharge treatment is performed. After completion, pretreated polyester filament is obtained. S2. Impregnation treatment: The pretreated polyester filament obtained in step S1 is impregnated in an aqueous resin nanocomposite emulsion. After impregnation, it is taken out and dried to obtain a polyester filament intermediate. S3. Ring cutting: The polyester filament intermediate obtained in step S2 is passed through a ring cutter to perform surface ring cutting, and the ring cutter is adapted to the radial cross section of the polyester filament raw material to finally obtain modified polyester filament.

[0027] Note: In step S1 above, the working gas is a mixture of oxygen and carbon dioxide in a volume ratio of 1:1; the discharge power is 250W, the processing time is 500s, and the working pressure is 70pa. The aqueous resin nanocomposite emulsion in step S2 is prepared using raw materials and their corresponding weight parts as shown in Table 1, and is obtained by mixing all raw materials together. The nano-reinforcing material consists of nano-silica, graphene oxide, and nano-cellulose whiskers, with a weight ratio of 8:1:2.

[0028] Preparation Example 2 A modified polyester filament differs from Preparation Example 1 in that, in the discharge treatment of step S2, the discharge power is 200W, the treatment time is 600s, and the working pressure is 100pa.

[0029] Preparation Example 3 A modified polyester filament differs from Preparation Example 1 in that, in the discharge treatment of step S2, the discharge power is 300W, the treatment time is 400s, and the working pressure is 40pa.

[0030] Preparation Examples 4-5 A modified polyester filament differs from Preparation Example 1 in that the raw materials used in the preparation of the aqueous resin nanocomposite emulsion and their corresponding weight parts are shown in Table 1.

[0031] Table 1. Raw materials and their corresponding weight parts (parts / kg) used in the preparation of aqueous resin nanocomposite emulsions in Examples 1 and 4-5. raw material Example 1 Example 4 Example 5 Waterborne polyurethane resin 60 50 70 Nano-reinforced materials 12.5 10 15 dispersant 1 0.5 1.5 Defoamer 0.6 0.2 1 Leveling agent 0.3 0.1 0.5 Thickener 0.3 0.1 0.5 water 15 10 20 Preparation Example 6 A modified polyester filament differs from Preparation Example 1 in that the nano-reinforcing material is composed of nano-silica, graphene oxide and nano-cellulose whiskers, and the weight ratio of nano-silica, graphene oxide and nano-cellulose whiskers is 7.5:1:2.

[0032] Preparation Example 7 A modified polyester filament differs from Preparation Example 1 in that the nano-reinforcing material is composed of nano-silica, graphene oxide and nano-cellulose whiskers, and the weight ratio of nano-silica, graphene oxide and nano-cellulose whiskers is 5:1:1.

[0033] Preparation Example 8 A modified polyester filament differs from Preparation Example 1 in that the nano-reinforcing material is composed of nano-silica, graphene oxide and nano-cellulose whiskers, and the weight ratio of nano-silica, graphene oxide and nano-cellulose whiskers is 10:1:3.

[0034] Preparation Example 9 A modified polyester filament differs from Preparation Example 1 in that no nano-reinforcing material is used in the aqueous resin nanocomposite emulsion.

[0035] Preparation Example 10 A modified polyester filament, which differs from Preparation Example 1 in that nano-silica and nano-cellulose whiskers are not used in the nano-reinforcing material.

[0036] Preparation Example 11 A modified polyester filament, which differs from Preparation Example 1 in that graphene oxide and nanocellulose whiskers are not used in the nano-reinforcing material.

[0037] Preparation Example 12 A modified polyester filament, which differs from Preparation Example 1 in that nano-reinforcing materials do not use nano-silica and graphene oxide.

[0038] Preparation Example 13 A modified polyester filament, which differs from Preparation Example 1 in that nano-silica is not used in the nano-reinforcing material.

[0039] Preparation Example 14 A modified polyester filament, which differs from Preparation Example 1 in that graphene oxide is not used in the nano-reinforcing material.

[0040] Preparation Example 15 A modified polyester filament, which differs from Preparation Example 1 in that no nanocellulose whiskers are used in the nano-reinforcing material. Example Example 1

[0041] A lightweight, high-support polyester fiber space fabric is prepared through the following steps: (1) Warping: The modified polyester filaments are arranged on the warp head to prepare for weaving; (2) Machine preparation: Take 8 face and bottom warping heads and 2 middle drawing warping heads, for a total of 10 heads, and install the heads onto the loom; (3) After each yarn splitting-threading-loosening process, the weaving density of the surface and bottom and the middle drawing distance and density are set for each yarn head to obtain a lightweight high-support polyester fiber space fabric.

[0042] Note: In the above operations, the modified polyester filaments were obtained from Preparation Example 1. The face and bottom warping speed was 600 m / min, and the intermediate drawing warping speed was 450 m / min; the face and bottom warp density was 180 threads / 10 cm, and the face and bottom weft density was 40 shuttles / 10 cm; the intermediate drawing warp density was 90 threads / 10 cm, and the intermediate drawing weft density was 40 shuttles / 10 cm. The basis weight of the lightweight, high-support polyester fiber space fabric was 1200 gsm. The distance between the upper and lower layers of polyester fiber mesh was 50 cm. Example 2

[0043] A lightweight, high-support polyester fiber space fabric differs from Example 1 in that the lightweight, high-support polyester fiber space fabric has a basis weight of 1150 gsm. Example 3

[0044] A lightweight, high-support polyester fiber space fabric differs from Example 1 in that the lightweight, high-support polyester fiber space fabric has a basis weight of 1250 gsm. Example 4

[0045] A lightweight, high-support polyester fiber space fabric differs from Example 1 in that the distance between the upper and lower layers of polyester fiber mesh is 45 cm. Example 5

[0046] A lightweight, high-support polyester fiber space fabric differs from Example 1 in that the distance between the upper and lower layers of polyester fiber mesh is 55 cm. Example 6

[0047] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 2. Example 7

[0048] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 3. Example 8

[0049] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 4. Example 9

[0050] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 5. Example 10

[0051] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 6. Example 11

[0052] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 7. Example 12

[0053] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 8. Example 13

[0054] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 9. Example 14

[0055] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 10. Example 15

[0056] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 11. Example 16

[0057] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 12. Example 17

[0058] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 13. Example 18

[0059] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 14. Example 19

[0060] A lightweight, high-support polyester fiber space fabric, which differs from Example 1 in that the modified polyester filaments are obtained from Preparation Example 15.

[0061] Comparative Example

[0062] Comparative Example 1 A lightweight, high-support polyester fiber space fabric differs from Example 1 in that the modified polyester filament is replaced with a modified polyester filament raw material.

[0063] Performance testing

[0064] Test samples: Lightweight high-support polyester fiber space fabrics obtained in Examples 1-19 were selected as test samples 1-19, and lightweight high-support polyester fiber space fabrics obtained in Comparative Example 1 were selected as control sample 1.

[0065] Test method: (1) Compressive strength test: Cut the space fabric into a sample of 50cm×50cm with specified size, place the sample between two parallel pressure plates of the compression tester, apply pressure to the sample at a constant speed, compress to 50% of the original thickness, and record the pressure value per unit area at this time, in kilopascals (kPa). (2) Compression deformation rate test: Cut the space fabric into a sample of the specified size of 50cm×50cm. First, measure the original thickness of the sample and record it as H0. Then, place the sample between two parallel pressure plates of the compression testing machine and apply pressure to the sample at a constant speed to compress it to 70% of the original thickness. Keep it at a temperature of 65℃ and a relative humidity of 45% for 24h. Then, remove the pressure plates and let it stand for 30min. Measure the recovered thickness of the sample again and record it as H1. Finally, calculate the compression deformation rate (%). Compression deformation rate (%) = (H0- H1) / H0. After performing the above tests on test samples 1-19 and control sample 1, the test results are recorded in Table 2.

[0066] Table 2 Test results of test samples 1-19 and control sample 1 sample Compressive strength (kPa) Compression deformation rate (%) Test sample 1 48.6 3.2 Test sample 2 47.8 4.0 Test sample 3 48.0 3.8 Test sample 4 48.2 3.6 Test sample 5 47.9 3.9 Test sample 6 48.1 3.7 Test sample 7 47.5 4.3 Test sample 8 47.7 4.1 Test sample 9 47.6 4.2 Test sample 10 48.3 3.5 Test sample 11 47.3 4.5 Test sample 12 47.4 4.4 Test sample 13 40.3 9.1 Test sample 14 42.4 7.7 Test sample 15 42.7 7.3 Test sample 16 42.6 7.5 Test sample 17 44.7 6.1 Test sample 18 45.0 5.7 Test sample 19 44.8 6.0 Control sample 1 31.8 17.2 As can be seen from Examples 1-12 and Comparative Example 1, and Table 2, this application uses specially prepared modified polyester filaments to weave a lightweight, high-support polyester fiber space fabric consisting of two layers of polyester fiber mesh connected by a connecting yarn in the middle. Compared to traditional space fabrics where the maximum distance between the upper and lower layers is only about 35 cm and the basis weight reaches 1500 gsm, this application can significantly increase the support distance between the upper and lower layers of the space fabric and reduce the overall basis weight of the space fabric, while still maintaining excellent support performance. The compressive strength and compression deformation rate tested above are significantly improved compared to unmodified polyester filaments.

[0067] Combining Examples 1 and 13-19 with Table 2, it can be seen that in the preparation of modified polyester filaments, if the aqueous resin nanocomposite emulsion lacks the use of nano-reinforcing materials, the resulting lightweight high-support polyester fiber space fabric exhibits significant losses in compressive strength and compression deformation rate. If only one or two of nano-silica, graphene oxide, and nano-cellulose whiskers are used as nano-reinforcing materials, although they can bring about corresponding improvements, the improvement is limited, and the effects can only be simply superimposed. Only when all three are used in combination can they bring about excellent synergistic effects, ultimately resulting in a lightweight high-support polyester fiber space fabric with excellent application quality.

[0068] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A lightweight, high-support polyester fiber space fabric, characterized in that, It is composed of two layers of polyester fiber mesh connected by a connecting yarn in the middle, and is woven using modified polyester filaments; the modified polyester filaments are prepared by the following method: S1. Plasma treatment: The polyester filament raw material is placed in the reaction chamber of the plasma cleaner. After removing impurities from the chamber, working gas is introduced and then discharge treatment is performed. After completion, pretreated polyester filament is obtained. S2. Impregnation treatment: The pretreated polyester filament obtained in step S1 is impregnated in an aqueous resin nanocomposite emulsion. After impregnation, it is taken out and dried to obtain a polyester filament intermediate. S3. Ring cutting: The polyester filament intermediate obtained in step S2 is passed through a ring cutter to perform surface ring cutting, and the ring cutter is adapted to the radial cross section of the polyester filament raw material to finally obtain modified polyester filament.

2. The lightweight, high-support polyester fiber space fabric according to claim 1, characterized in that: In the preparation of the modified polyester filament, in the discharge treatment of step S1, the discharge power is 200-300W, the treatment time is 400-600s, and the working pressure is 40-100pa.

3. The lightweight, high-support polyester fiber space fabric according to claim 1, characterized in that: In the preparation of the modified polyester filament, the aqueous resin nanocomposite emulsion in step S2 is made from raw materials comprising the following parts by weight: 50-70 parts of waterborne polyurethane resin; 10-15 parts of nano-reinforced material; Dispersant 0.5-1.5 parts; Defoamer 0.2-1 part; Leveling agent 0.1-0.5 parts; Thickener 0.1-0.5 parts; 10-20 parts water.

4. The lightweight, high-support polyester fiber space fabric according to claim 3, characterized in that: The nano-reinforcing material is composed of nano-silica, graphene oxide and nano-cellulose whiskers, and the weight ratio of nano-silica, graphene oxide and nano-cellulose whiskers is (5-10):1:(1-3).

5. The lightweight, high-support polyester fiber space fabric according to claim 4, characterized in that: The weight ratio of the nano-silica, graphene oxide and nano-cellulose whiskers is 8:1:

2.

6. The lightweight, high-support polyester fiber space fabric according to claim 1, characterized in that: The basis weight of the lightweight, high-support polyester fiber space fabric is 1150-1250 gsm.

7. The lightweight, high-support polyester fiber space fabric according to claim 1, characterized in that: The distance between the upper and lower layers of polyester fiber mesh is 45-55cm.

8. The method for preparing the lightweight, high-support polyester fiber space fabric according to claim 1, characterized in that: Includes the following steps: (1) Warping: The modified polyester filaments are arranged on the warp head to prepare for weaving; (2) Machine preparation: Take 8 face and bottom warping heads and 2 middle drawing warping heads, for a total of 10 heads, and install the heads onto the loom; (3) After each yarn splitting-threading-loosening process, the weaving density of the surface and bottom and the middle drawing distance and density are set for weaving to obtain a lightweight, high-support polyester fiber space fabric.