Temperature control fabric based on blending of superfine polyester and zero-carbon modal and preparation method of temperature control fabric

Abstract

The invention provides a temperature control fabric based on blending of superfine polyester and zero-carbon modal and a preparation method of the temperature control fabric, and belongs to the technical field of textile preparation. According to the temperature control fabric, superfine polyester fibers and zero-carbon modal fibers are blended into yarn according to the proportion of 30 / 70, a fabric is formed through honeycomb weave jacquard weaving, and then the fabric is subjected to HeiQ intelligent finishing and antistatic treatment, so that the temperature control fabric is obtained. By combining honeycomb weave weaving and a HeiQ intelligent finishing technology, the heat and humidity management performance, durability, wearing comfort and other performance of the fabric are remarkably improved, and the fabric is environmentally friendly, meets the green transformation requirement of the textile industry, also has industrialization feasibility and has remarkable economic and social benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile preparation, and particularly relates to a temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal and a preparation method thereof. Background Art

[0002] According to data from the China National Textile and Apparel Council, the market size of intelligent textiles in China reached 32 billion yuan in 2022, with an annual growth rate of over 15%. Among them, the demand for temperature-controlled fabrics in fields such as outdoor equipment and medical protection has increased significantly. However, traditional products have two major pain points. One is the insufficient thermal and moisture comfort, and the moisture permeability of polyester-based fabrics is generally lower than 6000 g / (m 2 ·24h) (GB / T 12704—2019); the other is the high environmental load, and the carbon emission of conventional polyester production reaches 3.8 kg CO2 / kg.

[0003] In the prior art, the research on temperature-controlled fabrics mainly focuses on fiber modification and fabric structure design, etc. For example, the phase change microcapsule finishing technology developed by Donghua University has poor wash resistance (the efficiency decays by 35% after 20 washes), and Jiangnan University uses three-dimensional spacer weaving to increase the air permeability by 40%, but the fabric gram weight increases by 25%. Therefore, the present invention proposes a temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal and a preparation method thereof. Summary of the Invention

[0004] To solve the above technical problems, the present invention proposes a temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal and a preparation method thereof, which utilizes the capillary effect of superfine polyester and the moisture absorption and degradation characteristics of zero-carbon modal, and adopts honeycomb tissue combined with HeiQ intelligent finishing to significantly improve the comprehensive performance of the fabric.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] One of the technical solutions of the present invention:

[0007] A temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal is spun from superfine polyester fibers and zero-carbon modal fibers in a ratio of 30 / 70.

[0008] Further, the fineness of the superfine polyester fiber is 0.8 dtex, the cross-section is pentafoil-shaped, and the carbon footprint ≤ 2.1 kg CO2 / kg. The fineness of the zero-carbon modal fiber is 1.3 dtex, and the carbon footprint ≤ 0.5 kg CO2 / kg.

[0009] Further, the lengths of both the superfine polyester fiber and the zero-carbon modal fiber are 38 mm.

[0010] Two of the technical solutions of the present invention:

[0011] A preparation method of the temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal. The superfine polyester fibers and zero-carbon modal fibers are blended into yarns in a ratio of 30 / 70, and the fabric is formed by jacquard weaving with a honeycomb texture. Then, the fabric is subjected to HeiQ intelligent finishing and antistatic treatment to obtain the temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal.

[0012] Further, the blending includes the steps of blowing-carding, carding, drawing, roving, spinning, and winding;

[0013] During blowing-carding, the speed of the opening beater is 700 - 900 r / min, preferably 800 r / min;

[0014] During carding, the speed of the cylinder is 400 - 500 r / min, preferably 450 r / min;

[0015] During drawing, the total draft multiple is 7.5 - 9, preferably 8.2, and the delivery speed is 300 m / min;

[0016] During roving, the draft multiple is 6.5 - 8.5, preferably 7.5, and the twist coefficient is 90;

[0017] During spinning, the twist coefficient is 380, and the spindle speed is 15000 r / min;

[0018] During winding, the winding speed is 100 - 1400 m / min, preferably 1200 m / min, and the tension is 18 cN.

[0019] Further, before weaving, the yarn also includes the processes of warping and sizing;

[0020] The warping tension of the warping is 18 ± 2 cN / strand, the warping speed is 600 m / min, and the winding density is 0.55 g / cm 3 ;

[0021] The sizing rate of the sizing is 11 - 13%.

[0022] Furthermore, the front-zone tension of the warping is 20 cN / strand, and the rear-zone tension is 16 cN.

[0023] Furthermore, the warping also includes the step of static elimination, specifically using a dual-frequency ion air bar (alternating frequencies of 5 kHz / 10 kHz) to make the static voltage on the surface of the yarn ≤ 0.3 kV.

[0024] Furthermore, the sizing slurry consists of polyvinyl alcohol, acrylate and wax flakes. The concentration of the slurry is 12.5 wt.%, and the slurry consists of 60 wt.% of polyvinyl alcohol (PVA-1799), 30 wt.% of acrylate and 10 wt.% of wax flakes.

[0025] Furthermore, the squeezing pressure for sizing is 20 kN.

[0026] Furthermore, the drying temperature is 105 - 125 °C, with gradient heating: 106 °C (pre-drying) → 126 °C (main drying).

[0027] Further, the weaving speed of the honeycomb dobby weaving is 450 r / min, the loom tension is 2200 ± 100 N, and the back beam height is 90 mm.

[0028] Further, the fabric specifications of the honeycomb dobby weaving are 75 tex * 75 tex, 400×320 ends / 10 cm, and the loom width is 160 cm.

[0029] Further, the HeiQ intelligent finishing includes the steps of impregnation, padding and curing;

[0030] The temperature of the impregnation is 60 °C and the time is 30 minutes;

[0031] The liquor pickup of the padding is 80%.

[0032] The temperature of the curing is 110 °C and the time is 3 minutes.

[0033] Furthermore, the finishing agent for the HeiQ intelligent finishing is HeiQ Cool 3.0 finishing agent with a concentration of 6 wt.%.

[0034] Further, the auxiliary agent for the antistatic treatment is polyether modified silicone oil at 2 g / L, the treatment temperature is 50 °C, the time is 20 minutes, and the bath ratio is 1∶15.

[0035] Compared with the prior art, the present invention has the following advantages and technical effects:

[0036] By blending the five-leaf cross-section superfine polyester and zero-carbon modal in a ratio of 30 / 70, combining the honeycomb dobby weaving and the HeiQ intelligent finishing technology, the present invention significantly improves the comprehensive performance of the fabric:

[0037] (1) The present invention forms a multi-dimensional balance of "moisture conduction-moisture absorption-support-flexibility" through the physical entanglement and performance superposition between fibers: the hydrophobicity and structural rigidity of ultrafine polyester fibers compensate for the deficiency of the decreased wet strength of modal fibers, and the hydrophilicity and softness of modal improve the stuffiness and stiffness of polyester, ultimately achieving the coordinated optimization of heat and moisture management and mechanical properties:

[0038] Ultrafine polyester and zero-carbon modal are blended in a 30 / 70 ratio to achieve complementary performance. In terms of heat and moisture management, ultrafine polyester fiber significantly reduces the pore radius (r) between fibers with its 0.8dtex fineness and five-lobed cross-section structure. According to the capillary pressure formula ΔP=2γcosθ / r, under the combined effect of the fiber surface contact angle θ (polyester hydrophobicity makes θ>90°, but the five-lobed cross-section increases the surface roughness and porosity), the capillary wicking effect is enhanced, accelerating the sweat to be discharged along the pores between fibers to the fabric surface, achieving rapid moisture conduction; zero-carbon modal fiber has a fineness of 1.3dtex and natural hydrophilicity (contact angle θ<90°, cosθ value is large), and with its high hygroscopic enthalpy (ΔH=45J / g) characteristics, it consumes heat through physical adsorption when absorbing sweat, reduces the microenvironment temperature, and stores moisture in the amorphous area of the fiber to avoid the sticky feeling caused by sweat retention, achieving humidity buffering regulation;

[0039] In terms of mechanical property synergy, the high modulus of polyester fiber (elastic modulus of approximately 35-90 cN / dtex) forms the fabric's skeleton support, contributing sufficient rigidity at a 30% ratio to inhibit excessive deformation of the fabric under external forces and improve dimensional stability (e.g., shrinkage rate after washing ≤ 5%). Zero-carbon modal fiber, with its low modulus (approximately 15-25 cN / dtex) and high elongation at break (>15%), contributes 70% of the main proportion to the fabric, giving it a soft touch. Its inter-fiber slippage increases the fabric's drape coefficient by 22% (to 0.45-0.50) compared to pure polyester fabric, improving fit comfort and natural shape when worn.

[0040] (2) The use of honeycomb tissue in the weaving process not only transforms the microscopic moisture conduction ability of the fiber level into macroscopic functionality at the fabric level, but also achieves multi-objective optimization of "directional moisture conduction-rapid evaporation-mechanical stability" through structural design, forming a synergistic relationship with the performance of the blended fibers, and ultimately giving the fabric efficient heat and moisture management capabilities:

[0041] The honeycomb structure constructs a three-dimensional moisture conduction network inside the fabric through a three-dimensional concave-convex layout of hexagonal unit structures. Using the regular pores of the hexagonal geometric structure, the five-leaf grooves of the superfine polyester fibers are arranged orderly at the macroscopic fabric level, forming a multi-level moisture conduction system of "microscopic grooves - macroscopic channels" to guide sweat to migrate rapidly along the preset direction. The mechanical symmetry of the hexagonal units (even stress on each side) enables the fabric to maintain a stable pore shape during stretching and bending, preventing the moisture conduction channels from failing due to external force deformation, while enhancing the overall tensile strength of the fabric. The concave-convex structure increases the surface area of the fabric, promoting the diffusion and evaporation of sweat on the fiber surface. Combining with the moisture absorption and energy storage characteristics of modal fibers, a dynamic balance of "rapid moisture conduction - efficient moisture absorption - continuous evaporation" is formed.

[0042] (3) HeiQ intelligent finishing uses 6 wt.% of HeiQ Cool 3.0 finishing agent, which contains multi-functional reactive molecules (such as compounds containing hydroxyl, carboxyl, epoxy or isocyanate groups). The zero-carbon modal molecular chain is rich in a large number of hydroxyl groups (-OH). Although the superfine polyester fiber is mainly composed of ester groups, its five-leaf cross-section increases the specific surface area, and there may be a small amount of hydroxyl groups on the surface or polar groups exposed after pretreatment, providing reaction sites for the formation of covalent bonds. The covalent bonding between the reactive functional groups in the finishing agent and the fiber hydroxyl groups forms irreversible chemical connections under baking conditions. The formation of covalent bonds changes the binding force between the finishing agent and the fiber from physical adsorption (easily damaged by washing) to chemical covalent bonding (requiring the breaking of chemical bonds to be removed). According to textile finishing theory, the wash durability of covalent bonds is much higher than that of physical adsorption. In addition, the molecular design of HeiQ Cool 3.0 finishing agent may introduce hydrolysis-resistant groups (such as ether bonds are more resistant to washing than ester bonds), further delaying the breakage of covalent bonds during long-term washing and ensuring the long-term stability of functions such as temperature control and moisture conduction of the fabric. Detailed implementation manners

[0043] The various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as a limitation of the present invention, but rather as a more detailed description of certain aspects, characteristics, and implementation schemes of the present invention.

[0044] It should be understood that the terms described in the present invention are only for describing specific embodiments and are not used to limit the present invention. In addition, for the numerical ranges in the present invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Each intermediate value within any stated value or stated range, as well as each smaller range between any other stated value or intermediate value within the stated range, is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded from the range.

[0045] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention pertains. Although this invention only describes preferred methods and materials, any methods and materials similar or equivalent to those described herein can also be used in the implementation or testing of this invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials related to the said documents. In case of conflict with any incorporated document, the content of this specification shall prevail.

[0046] Without departing from the scope or spirit of this invention, various improvements and changes can be made to the specific embodiments of this invention's specification, which are obvious to those skilled in the art. Other embodiments obtained from this invention's specification are obvious to those skilled in the art. This invention's specification and examples are merely exemplary.

[0047] Regarding "comprising", "including", "having", "containing", etc. used herein, they are all open-ended terms, meaning including but not limited to.

[0048] An embodiment of this invention provides a temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal, which is spun from superfine polyester fibers and zero-carbon modal fibers in a ratio of 30 / 70.

[0049] In a preferred embodiment of this invention, the fineness of the superfine polyester fiber is 0.8 dtex, the cross-section is penta-lobed, and the carbon footprint ≤ 2.1 kg CO2 / kg; the fineness of the zero-carbon modal fiber is 1.3 dtex, and the carbon footprint ≤ 0.5 kg CO2 / kg.

[0050] In a preferred embodiment of this invention, the lengths of both the superfine polyester fiber and the zero-carbon modal fiber are 38 mm.

[0051] An embodiment of this invention also provides a preparation method for a temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal. The superfine polyester fibers and zero-carbon modal fibers are blended into yarns in a ratio of 30 / 70, and the fabric is formed by jacquard weaving with a honeycomb texture. Then, HeiQ intelligent finishing and antistatic treatment are performed on the fabric to obtain the temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal.

[0052] In a preferred embodiment of this invention, the blending includes the steps of blowing-carding, carding, drawing, roving, spinning, and winding;

[0053] During blowing-carding, the speed of the opening beater is 700 - 900 r / min, preferably 800 r / min; if the speed is too low (< 700 r / min), the opening is insufficient (opening degree < 80%); if it is too high (> 900 r / min), short fibers are likely to be generated (short fiber rate increases by 20%);

[0054] During carding, the speed of the cylinder is 400 - 500 r / min, preferably 450 r / min; if the speed is too low (<400 r / min), the carding is insufficient (the neps in the sliver > 20 grains / g), and if it is too high (>500 r / min), the fibers are easily damaged (the short fiber rate increases by 15%);

[0055] During drawing, the total draft multiple is 7.5 - 9 times, preferably 8.2, and the delivery speed is 300 m / min; if the draft multiple is too high (>9.0), the evenness of the sliver will be poor, and if it is too low (<7.5), the fibers cannot be fully mixed. When the delivery speed > 350 m / min, the fiber breakage rate increases by 15%;

[0056] During roving, the draft multiple is 6.5 - 8.5, preferably 7.5, and the twist factor is 90; if the draft multiple is too low (<6.5), the evenness of the roving will be poor (CV value > 4.0%), and if it is too high (>8.5), details are likely to occur (the number of details ≤ -50% is about ≤ 5 per 100 m);

[0057] During spinning, the twist factor is 380 and the spindle speed is 15000 r / min; if the spindle speed is too high, the hairiness index H will increase;

[0058] During winding, the winding speed is 100 - 1400 m / min, preferably 1200 m / min, and the tension is 18 cN; if the speed is too low (<1000 m / min), the production efficiency is affected, and if it is too high (>1400 m / min), the yarn hairiness increases (the H value increases by 25%).

[0059] In the preferred embodiment of the present invention, before weaving, the yarn also includes the processes of warping and sizing;

[0060] The tension of warping is 18 ± 2 cN / strand, the warping speed is 600 m / min, and the winding density is 0.55 g / cm 3 ;

[0061] The sizing rate of sizing is 11 - 13%, preferably 12%. When the sizing rate < 11%, the wear resistance is insufficient (the number of yarn wear resistance < 200 times), and when it > 13%, the fabric feel is stiff (the bending stiffness increases by 18%).

[0062] By controlling the warping tension, the yarn breakage rate (<0.1%) and the elongation rate (≤1.2%) are balanced. By controlling the warping speed, the accumulation of static electricity is avoided (the relative humidity is controlled at 65% ± 5%). By controlling the winding density, the hardness of the warp beam is ensured to be uniform (Shore hardness 80 ± 5).

[0063] In the preferred embodiment of the present invention, the front zone tension of warping is 20 cN and the rear zone tension is 16 cN, thereby reducing the plastic deformation of the yarn.

[0064] In a preferred embodiment of the present invention, warping further includes a step of static electricity elimination, specifically by using a dual-frequency ion air bar (alternating frequencies of 5 kHz / 10 kHz) to make the static voltage on the surface of the yarn ≤ 0.3 kV.

[0065] In a preferred embodiment of the present invention, the sizing slurry consists of polyvinyl alcohol, acrylate, and wax flakes. The concentration of the sizing slurry is 12.5 wt.%. The sizing slurry is composed of 60 wt.% of polyvinyl alcohol (PVA-1799), 30 wt.% of acrylate, and 10 wt.% of wax flakes. By controlling the raw material composition, the interfacial bonding force between polyester and modal is improved, and its peeling strength ≥ 8 N / cm. Among them, PVA-1799 has strong adsorption to polyester (contact angle ≤ 30°) and good film-forming integrity (breaking elongation rate of the sizing film ≥ 200%), while acrylate can enhance the fiber cohesion of modal (hairiness reduction rate ≥ 70%).

[0066] In a preferred embodiment of the present invention, the squeezing pressure for sizing is 20 kN, thereby controlling the slurry penetration rate (sizing film coverage rate 45% ± 3%).

[0067] In a preferred embodiment of the present invention, the drying temperature is 105 - 125 °C, and gradient heating is adopted, 106 °C (pre-drying) → 126 °C (main drying), to avoid thermal damage to modal fibers, make the crystallinity of the sizing film reach more than 65%, and at the same time control the moisture regain of modal fibers at 8% - 10%.

[0068] Honeycomb tissue jacquard weaving refers to the combination of the structural design of the honeycomb tissue and the pattern design of jacquard weaving to produce fabrics with unique appearance and functions. The fabrics of honeycomb tissue jacquard weaving not only have good appearance effects but also possess high mechanical strength, heat preservation performance, and interlayer peeling performance. In a preferred embodiment of the present invention, the weaving speed of honeycomb tissue jacquard weaving is 450 r / min, the loom tension is 2200 ± 100 N, the back beam height is 90 mm, the fabric specification of honeycomb tissue jacquard weaving is 75 tex * 75 tex 400 × 320 ends / 10 cm, and the loom width is 160 cm. By controlling the loom tension, the shedding clarity is ensured (heald frame stroke 12 mm), by controlling the weaving speed, the breakage rate of warp and weft yarns is controlled (≤ 0.5 ends / loom·h), and by controlling the back beam height, the fabric surface flatness is optimized (weft skew ≤ 1.5%).

[0069] In a preferred embodiment of the present invention, HeiQ intelligent finishing includes the steps of impregnation, padding, and curing;

[0070] The temperature for impregnation is 60 °C, and the time is 30 minutes;

[0071] The padding pick-up rate is 80%.

[0072] The baking temperature is 110 °C and the time is 3 minutes.

[0073] In a preferred embodiment of the present invention, the finishing agent for HeiQ intelligent finishing is HeiQ Cool3.0 finishing agent with a concentration of 6 wt.%. The finishing agent forms a covalent bond with -OH in the fiber, thereby improving the wash resistance.

[0074] In a preferred embodiment of the present invention, the auxiliary agent for antistatic treatment is polyether modified silicone oil at 2 g / L, the treatment temperature is 50 °C, the time is 20 minutes, and the bath ratio is 1:15.

[0075] The superfine polyester fiber with a five-leaf cross-section used in the embodiment of the present invention has a fineness of 0.8 dtex; trade name: Hengyi MicroStar TM 5L, purchased from Zhejiang Hengyi Petrochemical Co., Ltd., has obvious performance advantages compared with ordinary polyester: 4200 m 2 / kg for the five-leaf cross-section, while 2800 m 2 / kg for the circular cross-section. The five-leaf cross-section significantly improves the capillary effect by increasing the fiber specific surface area (the capillary height is increased by 62%, calculated by the Washburn equation). After weaving, the grooves between the blades form a directional moisture conduction channel through the hexagonal unit structure (the moisture permeability rate is 0.25 g / (cm 2 ·h)), which is 40% higher than that of ordinary circular cross-section polyester.

[0076] The zero-carbon modal used in the embodiment of the present invention is a cellulose fiber made from renewable wood pulp through a closed-loop production process, with a fineness of 1.3 dtex, specifically purchased from Lenzing AG in Austria. Its core properties include:

[0077] (1) Carbon footprint: Certified by ISO 14067, the carbon footprint throughout the life cycle ≤ 0.5 kg CO2 / kg, which is 58% lower than that of traditional modal (1.2 kg CO2 / kg).

[0078] (2) Sustainability: The raw materials come from FSC / PEFC-certified forests, and the recovery rate of production wastewater > 95%.

[0079] (3) Moisture absorption: The standard regain is 12% (8% for cotton), and the moisture absorption rate is 50% faster than that of cotton (tested by GB / T 9995—1997).

[0080] (4) Softness: The fiber bending stiffness is 0.8 cN / cm 2 (1.2 cN / cm for cotton 2 ), giving the fabric a natural smooth touch.

[0081] (5) Biodegradability: The natural degradation rate in soil is ≥ 90% within 180 days (OECD 301B standard), avoiding microplastic pollution.

[0082] In the embodiments of the present invention, the equipment model for opening is FA106A, the equipment model for carding is FA221B, the equipment model for drawing is FA326A draw frame (Tianmen Textile Machinery), the equipment model for roving is FA415A, the equipment model for spinning is Rieter K45, the equipment model for winding is Autocone r X6, the equipment model for warping is GA163B sectional warping machine (400 ends / 10 cm), the equipment model for weaving is Toyota JAT810 jacquard loom, and the equipment model for post-finishing is Monforts Eco finishing machine.

[0083] The technical solutions of the present invention are further described below through embodiments.

[0084] Embodiment 1

[0085] A preparation method of a temperature-controlled fabric based on the blending of superfine polyester and zero-carbon modal, specifically including the following steps:

[0086] (1) Blending superfine polyester fibers and zero-carbon modal fibers into yarns in a ratio of 30 / 70, specifically including the steps of opening, carding, drawing, roving, spinning, and winding:

[0087] During opening, the speed of the opening beater is 800 r / min;

[0088] During carding, the speed of the cylinder is 450 r / min;

[0089] During drawing, the total draft multiple is 8.2, and the delivery speed is 300 m / min;

[0090] During roving, the draft multiple is 7.5, and the twist factor is 90;

[0091] During spinning, the twist factor is 380, and the spindle speed is 15000 r / min;

[0092] During winding, the winding speed is 1200 m / min, and the tension is 18 cN;

[0093] (2) Preparation before yarn weaving: The yarn obtained in step (1) is subjected to warping and sizing pretreatment. The tension during warping is 18 ± 2 cN / end, the front-zone tension is 20 cN / end, the rear-zone tension is 16 cN / end, the warping speed is 600 m / min, and the winding density is 0.55 g / cm 3, the sizing rate of sizing is 12%, the squeezing pressure of sizing is 20 kN, after sizing, it is dried, and the drying temperature is 105 - 125 °C, with gradient heating, pre-drying stage (106 °C, 2 - 3 min) → main drying stage (126 °C, 1.5 - 2 min), where the sizing agent is composed of 60 wt.% polyvinyl alcohol (PVA-1799), 30 wt.% acrylate, and 10 wt.% wax flakes;

[0094] (3) The fabric is formed by jacquard weaving of honeycomb tissue: the weaving speed of jacquard weaving of honeycomb tissue is 450 r / min, the loom tension is 2200 ± 100 N, the back beam height is 90 mm, the fabric specification is 75 tex * 75 tex 400 × 320 per 10 cm, and the loom width is 160 cm;

[0095] (4) The fabric is subjected to HeiQ intelligent finishing, including the steps of impregnation, padding, and curing: the impregnation temperature is 60 °C, the time is 30 minutes, the padding pick-up rate is 80%, the curing temperature of curing is 110 °C, the time is 3 minutes, and the finishing agent for HeiQ intelligent finishing is HeiQ Cool 3.0 finishing agent with a concentration of 6 wt.%;

[0096] (5) Antistatic treatment: The fabric obtained in step (4) is impregnated in polyether-modified silicone oil with a concentration of 2 g / L, treated at 50 °C for 20 minutes, and the bath ratio is 1:15 to obtain a temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal.

[0097] Comparative Example 1

[0098] Pure cotton fabric, the fabric specification is 75 tex * 75 tex 380 × 280 per 10 cm.

[0099] Comparative Example 2

[0100] Same as Example 1, the difference is only that the superfine polyester fiber and zero-carbon modal fiber are blended into yarns in a ratio of 20 / 80, and the other steps are the same as those in Example 1.

[0101] Comparative Example 3

[0102] Same as Example 1, the difference is only that the superfine polyester fiber is replaced with superfine polyester fiber with a circular cross-section and a fineness of 0.8 dtex, and the other steps are the same as those in Example 1.

[0103] Comparative Example 4

[0104] Same as Example 1, except that in step (3), the honeycomb weave is replaced with a plain weave, the weaving speed is 530 r / min, the loom tension is 20500 N, the back beam height is 75 mm, the fabric specification is 75 tex * 75 tex 400×320 ends / 10 cm, and the loom width is 160 cm;

[0105] The remaining steps are the same as those in Example 1.

[0106] Comparative Example 5

[0107] Same as Example 1, except that in step (4), the process of HeiQ intelligent finishing of the fabric is omitted, and the remaining steps are the same as those in Example 1.

[0108] Performance test

[0109] (1) Comparison of physical properties

[0110] The following tests were carried out on the fabrics of Example 1 and Comparative Examples 1-5: The air permeability was measured according to 《GB / T 5453-1997》, the moisture permeability was measured according to 《GB / T 1,2704-2019》, and the air permeability was measured according to 《GB / T 3923.1-2013》. The results are shown in Table 1.

[0111] Table 1 Comparison of general properties of fabrics

[0112]

[0113] As can be seen from Table 1, Example 1 (30 / 70 five-lobed polyester + honeycomb weave + HeiQ finishing) has the best comprehensive performance. Its warp breaking strength reaches 582±15 N, the air permeability is 1025 mm / s, and the moisture permeability is 8500 g / (m 2 ·24 h), which is significantly better than that of the pure cotton fabric in Comparative Example 1 (breaking strength 320±10 N, air permeability 650 mm / s, moisture permeability 5200 g / (m 2 ·24 h)).

[0114] In Comparative Example 2 (20 / 80 blended), due to the decrease in the proportion of polyester, the fiber skeleton support effect is weakened, and the breaking strength drops to 485±12 N. The air permeability (890 mm / s) and moisture permeability (7200 g / (m 2 ·24 h)) are respectively 13% and 15% lower than those of Example 1. In Comparative Example 3 (round-section polyester), due to the lack of moisture-conducting grooves in the five-lobed cross-section, the moisture permeability is only 6300 g / (m 2 ·24 h), which is 26% lower than that of Example 1. In Comparative Example 4 (plain weave), due to the decrease in porosity (38% vs 62%), the air permeability drops to 850 mm / s, and the moisture permeability decreases to 6900 g / (m 2·24 h), indicating the synergistic effect of the honeycomb structure on heat and moisture transfer. In Comparative Example 5 (without HeiQ finishing), since the hydrophilic-hydrophobic micro-region regulation was not formed, the moisture permeability (7500 g / (m 2 ·24 h)) decreased by 12% compared with Example 1, and the breaking strength (540 ± 14 N) decreased slightly due to the lack of protection of the finishing agent.

[0115] (2) Temperature control performance test

[0116] Test objects: The temperature control fabric prepared from the blend of superfine polyester and zero-carbon modal in Example 1, and the pure cotton fabric in Comparative Example 1;

[0117] Thermal resistance test: Use a YG606E type thermal resistance tester;

[0118] In an environment with a temperature difference of 20 → 35 °C, perform infrared thermal imaging: Infrared thermal imager;

[0119] DSC test: Differential scanning calorimeter (DSC);

[0120] According to GB / T 12490—2018 "Determination of Appearance and Performance Changes of Textiles after Home Laundering", 50 laundering tests were carried out. Washing equipment: Whirlpool household drum washing machine (model WFW85HEFU), washing program: 40 °C standard cotton fabric program, rotation speed 1200 r / min, detergent: AATCC standard detergent (concentration 1.5 g / L), drying method: lay flat to dry (room temperature 25 °C, humidity 60% RH). After 50 launderings, the temperature control performance (specifically referring to the phase change enthalpy) was tested, and the temperature control performance retention rate was calculated.

[0121] The test results are shown in Table 2.

[0122] Table 2 Temperature control performance test results

[0123]

[0124]

[0125] As can be seen from Table 2, the temperature control performance of Example 1 is comprehensively leading: the lowest thermal resistance (0.025 m 2 ·K / W), the surface temperature difference is only 2.1 °C, the response time is 4.8 min, the melting enthalpy (28.3 J / g) and the crystallization enthalpy (26.7 J / g) are the highest, and the temperature control performance retention rate ≥ 91.3% after 50 launderings. The thermal resistance of Comparative Example 1 (pure cotton) is as high as 0.038 m 2· K / W, surface temperature difference of 5.6 °C, response time of 7.8 min, and no phase change characteristics (melting enthalpy of 0 J / g), verifying the limitations of traditional cotton fabrics in dynamic temperature control. In Comparative Example 2 (20 / 80 blend), due to the excessive proportion of modal, the fixing efficiency of the HeiQ finishing agent decreased, and the melting enthalpy (19.8 J / g) decreased by 30% compared to Example 1, and the retention rate after washing was only 75.4%. In Comparative Example 3 (round cross-section), due to the weakened capillary effect, the response time was extended to 5.7 min, and the surface temperature difference (2.8 °C) increased by 33% compared to Example 1, proving the moisture conduction advantage of the five-leaf cross-section. In Comparative Example 4 (plain weave), due to the uneven distribution of structural pores, the melting enthalpy (17.6 J / g) decreased by 38% compared to Example 1, the surface temperature difference reached 4.2 °C, and the thermal resistance increased to 0.035 m 2 · K / W, highlighting the thermal and moisture regulation ability of the honeycomb structure. In Comparative Example 5 (without HeiQ finishing), due to the unfixed phase change material, the melting enthalpy (10.2 J / g) and crystallization enthalpy (9.5 J / g) decreased significantly, and the retention rate after washing was only 42.6%, indicating the core role of the HeiQ technology in the long-term temperature control function..

[0126] (3) Wearing test

[0127] Subjects: 30 people (half male and half female), aged 25 - 45 years old;

[0128] Environmental conditions: temperature 25 °C, humidity 65% RH;

[0129] Activity intensity: walking at 5 km / h for 30 min;

[0130] The results of the wearing comfort score (n = 30) are shown in Table 3.

[0131] Table 3 Wearing comfort score (n = 30)

[0132]

[0133] As can be seen from Table 3, for 85% of the subjects wearing the fabric of this example, the body sensation temperature fluctuation decreased by more than 40%, and the subjective scores showed that the thermal and moisture comfort (4.4 / 5) and softness (4.6 / 5) were significantly better than those of pure cotton.

[0134] Combined with the above performance test results, it can be seen that the present invention significantly improves the comprehensive performance of the fabric by blending five-leaf cross-section superfine polyester (0.8 dtex) and zero-carbon modal (carbon footprint ≤ 0.5 kg CO2 / kg) in a ratio of 30 / 70, combined with honeycomb structure weaving and HeiQ intelligent finishing technology. The specific technical effects include:

[0135] (1) Optimization of thermal and moisture management: air permeability reaches 1055 ± 35 mm / s, moisture permeability reaches 8600 ± 220 g / (m 2· 24 h), which is 57% and 63% higher than that of pure cotton fabrics respectively; the dynamic temperature control response time ≤ 5 minutes, the melting enthalpy is 28.3 J / g, and the surface temperature difference is only 2.2 °C in the temperature difference environment, and the thermal resistance is reduced by 32%.

[0136] (3) Enhanced durability: The temperature control performance retention rate ≥ 90% after 50 washes, and the wash resistance far exceeds that of traditional phase change microcapsule technology (the attenuation is 35% after 20 washes, from "Research Progress on the Application of Phase Change Microcapsules in Temperature-Regulating Textiles", Soochow University, Li Dongsheng, etc.).

[0137] (3) Environmental friendliness: The carbon footprint in the whole life cycle is reduced by 68% compared with conventional polyester, and zero-carbon modal can be biodegradable (the degradation rate ≥ 90% in 180 days), avoiding microplastic pollution.

[0138] (4) Wearing comfort: The body temperature fluctuations of 85% of the subjects are reduced by more than 40%, and the subjective scores show that the thermal and wet comfort and softness are significantly better than those of pure cotton.

[0139] The present invention not only meets the needs of the green transformation of the textile industry, but also has industrial feasibility. Producing 1 million meters per year can reduce carbon emissions by 260 tons, with significant economic and social benefits.

[0140] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A temperature control fabric based on the blend of ultra-fine polyester and zero-carbon modal, characterized in that, It is made by blending superfine polyester fiber and zero-carbon modal fiber in a ratio of 30 / 70; The fineness of the superfine polyester fiber is 0.8 dtex, and its cross-section is pentafoil; the fineness of the zero-carbon modal fiber is 1.3 dtex.

2. A method for preparing a temperature-controlled fabric based on the blend of ultrafine polyester and zero-carbon modal as described in claim 1, characterized in that, The superfine polyester fiber and the zero-carbon modal fiber are blended into yarn in a ratio of 30 / 70, and the fabric is formed by jacquard weaving with honeycomb texture. Then, the fabric is subjected to HeiQ intelligent finishing and antistatic treatment to obtain the temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal.

3. The preparation method of the temperature control fabric based on the blend of superfine polyester and zero-carbon modal according to claim 2, characterized in that, The blending includes the steps of blowing, carding, drawing, roving, spinning, and winding; During blowing, the speed of the opening beater is 700 - 900 r / min; During carding, the speed of the cylinder is 400 - 500 r / min; During drawing, the total draft multiple is 7.5 - 9 times, and the delivery speed is 300 m / min; During roving, the draft multiple is 6.5 - 8.5 times, and the twist factor is 90; During spinning, the twist factor is 380, and the spindle speed is 15000 r / min; During winding, the winding speed is 100 - 1400 m / min, and the tension is 18 cN.

4. The preparation method of the temperature control fabric based on the blend of superfine polyester and zero-carbon modal according to claim 2, characterized in that, Before weaving, the yarn also includes the processes of warping and sizing; The warping tension for warping is 18 ± 2 cN per strand, the warping speed is 600 m / min, and the winding density is 0.55 g / cm 3 ; The sizing rate of the sizing is 11 - 13%; 5. The preparation method of the temperature-controlled fabric based on the blend of superfine polyester and zero-carbon modal according to claim 4, characterized in that, The sizing paste is composed of polyvinyl alcohol, acrylate, and wax flakes. The concentration of the sizing paste solution is 12.5 wt.%. The squeezing pressure during sizing is 20 kN, and the drying temperature during sizing is 105 - 125 °C.

6. The preparation method of the temperature control fabric based on the blend of superfine polyester and zero-carbon modal according to claim 2, characterized in that, The weaving speed of the honeycomb texture jacquard weaving is 450 r / min, the loom tension is 2200 ± 100 N, and the back beam height is 90 mm.

7. The preparation method of the temperature control fabric based on the blend of superfine polyester and zero-carbon modal according to claim 2, characterized in that, The HeiQ intelligent finishing includes the steps of impregnation, padding, and curing; The temperature of the impregnation is 60 °C, and the time is 30 minutes; The liquor pickup rate of the padding is 80%; The temperature of the curing is 110 °C, and the time is 3 minutes.

8. The preparation method of the temperature control fabric based on the blend of superfine polyester and zero-carbon modal according to claim 7, characterized in that, The finishing agent used for HeiQ intelligent finishing is HeiQ Cool 3.0 finishing agent with a concentration of 6 wt.%; 9. The preparation method of the temperature-controlled fabric based on the blend of ultrafine polyester and zero-carbon modal according to claim 2, wherein The auxiliary agent used for antistatic treatment is polyether-modified silicone oil at 2 g / L. The treatment temperature is 50 °C, the time is 20 minutes, and the bath ratio is 1∶15.

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