A wear-resistant polyester-cotton fabric and its preparation process

Abstract

This invention relates to the field of textile materials technology, and proposes a wear-resistant polyester-cotton fabric and its preparation process. The wear-resistant polyester-cotton fabric is made by blending modified polyester fibers and natural cotton fibers. The raw materials of the modified polyester fibers include the following components by weight: 100-120 parts polyester chips, 3-5 parts wear-resistant filler, 5-15 parts polybutylene terephthalate, 0.1-0.3 parts antioxidant, 0.2-0.4 parts lubricant, and 0.1-0.2 parts antistatic agent. The wear-resistant filler consists of sericite, a silica coating layer, and a zinc oxide coating layer from the inside out. The wear-resistant filler includes the following raw materials by weight: 100 parts sericite, 8-12 parts tetraethyl orthosilicate, and 5-8 parts zinc nitrate. This technical solution solves the problem of poor wear resistance in polyester-cotton fabrics in related technologies.

Description

Technical Field

[0001] This invention relates to the field of textile materials technology, specifically to a wear-resistant polyester-cotton fabric and its preparation process. Background Technology

[0002] Polyester-cotton fabric is a common textile made by blending or weaving polyester and cotton fibers in a certain proportion. It combines the high strength, wrinkle resistance, and dimensional stability of polyester with the skin-friendly, breathable, and moisture-wicking advantages of cotton, and is widely used in workwear, uniforms, home textiles, outdoor clothing, sportswear, and industrial textiles. With the increasing demands for fabric durability in workwear, outdoor, and sports settings, abrasion resistance has become a core indicator for measuring the service life and quality of polyester-cotton fabric. However, existing conventional polyester-cotton fabrics generally suffer from insufficient abrasion resistance, easily exhibiting surface pilling, fiber shedding, and localized damage during long-term friction use, affecting the fabric's lifespan and failing to meet the durability requirements of high-end workwear and frequently used home textiles. Therefore, it is necessary to propose an abrasion-resistant polyester-cotton fabric and its preparation process. Summary of the Invention

[0003] This invention proposes a wear-resistant polyester-cotton fabric and its preparation process, which solves the problem of poor wear resistance of polyester-cotton fabric in related technologies.

[0004] The technical solution of the present invention is as follows: This invention proposes a wear-resistant polyester-cotton fabric, which is made of a blend of modified polyester fiber and natural cotton fiber; the raw material of the modified polyester fiber includes the following components in parts by weight: 100-120 parts polyester chips, 3-5 parts wear-resistant filler, 5-15 parts polybutylene terephthalate, 0.1-0.3 parts antioxidant, 0.2-0.4 parts lubricant, and 0.1-0.2 parts antistatic agent; The wear-resistant filler consists of sericite, a silica coating layer, and a zinc oxide coating layer from the inside out; the wear-resistant filler comprises the following raw materials in parts by weight: 100 parts sericite, 8-12 parts tetraethyl orthosilicate, and 5-8 parts zinc nitrate.

[0005] As a further technical solution, the mass ratio of tetraethyl orthosilicate to zinc nitrate is 3.4~7.0:3.

[0006] As a further technical solution, the method for preparing the wear-resistant filler includes the following steps: A1. Disperse tetraethyl orthosilicate in an aqueous ethanol solution and adjust the pH to 7.5-8.0 to obtain a sol solution; disperse sericite in water to obtain a suspension. A2. The sol solution is added to the suspension and mixed, then filtered, washed and dried to form a silica coating layer, thus obtaining silica-coated sericite. A3. Add zinc nitrate aqueous solution to the silica-coated sericite, adjust the pH to 8.0~9.0, mix, and then filter, wash, dry and calcine to form a zinc oxide coating layer to obtain the wear-resistant filler.

[0007] As a further technical solution, in step A1, the mass-to-volume ratio of tetraethyl orthosilicate to ethanol aqueous solution is 1g:10~15g / mL, and the ethanol content in the ethanol aqueous solution is 60wt%; in the suspension, the mass-to-volume ratio of sericite to water is 1g:15~20g / mL.

[0008] As a further technical solution, in step A2, the mixing temperature is 45~55℃ and the mixing time is 2~3h.

[0009] As a further technical solution, in step A3, the mass-to-volume ratio of zinc nitrate to water in the zinc nitrate aqueous solution is 1g:20mL.

[0010] As a further technical solution, in step A3, the mixing temperature is 55~65℃ and the mixing time is 1.5~2.5h.

[0011] As a further technical solution, in step A3, the calcination temperature is 500~600℃ and the calcination time is 2~3h.

[0012] As a further technical solution, the polybutylene terephthalate includes a first polybutylene terephthalate and a second polybutylene terephthalate; the first polybutylene terephthalate and the second polybutylene terephthalate have different melt volume flow rates.

[0013] As a further technical solution, the melt volume flow rate of the first polybutylene terephthalate is 11~37 cm⁻¹. 3 / 10min, preferably 17cm 3 The test conditions were 275℃ / 2.16kg for 10 minutes; the melt flow rate of the second polybutylene terephthalate was 3~8cm. 3 / 10min, preferably 5cm 3 / 10min, test conditions were 275℃ / 2.16kg.

[0014] As a further technical solution, the mass ratio of the first polybutylene terephthalate to the second polybutylene terephthalate is 4~6:1.

[0015] As a further technical solution, the antioxidant includes one or more of antioxidant 1010, antioxidant 1076 and antioxidant 168.

[0016] As a further technical solution, the lubricant includes one or both of pentaerythritol stearate and butyl stearate.

[0017] As a further technical solution, the antistatic agent is a polyether ester antistatic agent.

[0018] This invention also proposes a process for preparing abrasion-resistant polyester-cotton fabric, comprising the following steps: S1. After the raw materials of the modified polyester fiber are mixed evenly, the modified polyester masterbatch is obtained by melt extrusion granulation. S2. The modified polyester masterbatch is melt-spun to obtain modified polyester fiber; S3. The modified polyester fiber and natural cotton fiber are blended and woven to obtain the wear-resistant polyester-cotton fabric.

[0019] The working principle and beneficial effects of this invention are as follows: This invention relates to a wear-resistant polyester-cotton fabric made from a blend of modified polyester fibers and natural cotton fibers. By adding a wear-resistant filler composed of a serpentine, a silica coating, and a zinc oxide coating (from the inside out) to the modified polyester fibers, the wear resistance of the polyester-cotton fabric can be improved. Existing technologies often directly add serpentine to the fibers to improve wear resistance; however, serpentine is prone to agglomeration, resulting in limited improvement in wear resistance. This invention, by sequentially setting a silica coating and a zinc oxide coating on the outer surface of the serpentine, improves the dispersibility of the wear-resistant filler, thereby enhancing the wear resistance of the polyester-cotton fabric. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] In the following examples and comparative examples, the polyester chips were CR-8863; the sericite had a particle size of 5 μm; the polyether ester antistatic agent was Pelestat 6321; and the natural cotton fiber had a linear density of 1.35 dtex and a fiber length of 38 mm.

[0022] Example 1 A wear-resistant polyester-cotton fabric is made from a blend of modified polyester fiber and natural cotton fiber. The raw material of the modified polyester fiber includes the following components in parts by weight: 100 parts polyester chips, 3 parts wear-resistant filler, and polybutylene terephthalate (melt flow rate of 17 cm⁻¹). 3 / 10min, test conditions are 275℃ / 2.16kg, model is B 4406 G6) 5 parts, antioxidant 1010 0.1 parts, pentaerythritol stearate 0.2 parts, polyether ester antistatic agent 0.1 parts; The preparation method of wear-resistant filler includes the following steps: A1. Disperse 8.5 parts of tetraethyl orthosilicate in a 60wt% aqueous ethanol solution, adjust the pH to 7.5 to obtain a sol solution, with a mass-to-volume ratio of tetraethyl orthosilicate to aqueous ethanol solution of 1g:10g / mL; disperse 100 parts of sericite in water to obtain a suspension, with a mass-to-volume ratio of sericite to water of 1g:20g / mL. A2. Add the sol solution to the suspension and mix at 45°C for 3 hours. After filtration, washing and drying, a silica coating layer is formed, and silica-coated sericite is obtained. A3. Add zinc nitrate aqueous solution to silica-coated sericite, adjust the pH to 8.0, mix at 55℃ for 2.5h, then filter, wash, and dry, and calcine at 500℃ for 3h to form a zinc oxide coating layer, thus obtaining a wear-resistant filler; in the zinc nitrate aqueous solution, zinc nitrate is 7.5 parts, and the mass-volume ratio of zinc nitrate to water is 1g:20mL; A process for preparing abrasion-resistant polyester-cotton fabric includes the following steps: S1. After the raw materials of modified polyester fiber are mixed evenly, they are melt-extruded and granulated to obtain modified polyester masterbatch. S2. The modified polyester masterbatch is melt-spun to obtain modified polyester fiber; S3. Modified polyester fiber is blended with natural cotton fiber to produce wear-resistant polyester-cotton fabric.

[0023] Example 2 A wear-resistant polyester-cotton fabric is made from a blend of modified polyester fiber and natural cotton fiber. The raw material of the modified polyester fiber includes the following components in parts by weight: 110 parts polyester chips, 4 parts wear-resistant filler, and polybutylene terephthalate (melt volume flow rate of 17 cm⁻¹). 3 / 10min, test conditions are 275℃ / 2.16kg, model is B 4406 G6) 10 parts, antioxidant 1076 0.2 parts, butyl stearate 0.3 parts, polyether ester antistatic agent 0.15 parts; The preparation method of wear-resistant filler includes the following steps: A1. Disperse 8 parts of tetraethyl orthosilicate in a 60wt% ethanol aqueous solution, adjust the pH to 7.5 to obtain a sol solution, with a mass-to-volume ratio of tetraethyl orthosilicate to ethanol aqueous solution of 1g:12g / mL; disperse 100 parts of sericite in water to obtain a suspension, with a mass-to-volume ratio of sericite to water of 1g:18g / mL. A2. Add the sol solution to the suspension and mix at 50°C for 2.5 hours. After filtration, washing and drying, a silica coating layer is formed, and silica-coated sericite is obtained. A3. Add zinc nitrate aqueous solution to silica-coated sericite, adjust the pH to 8.5, mix at 60℃ for 2 hours, then filter, wash, and dry, and calcine at 550℃ for 2.5 hours to form a zinc oxide coating layer, thus obtaining a wear-resistant filler; in the zinc nitrate aqueous solution, zinc nitrate is 8 parts, and the mass-volume ratio of zinc nitrate to water is 1g:20mL; A process for preparing abrasion-resistant polyester-cotton fabric is the same as in Example 1.

[0024] Example 3 A wear-resistant polyester-cotton fabric is made from a blend of modified polyester fiber and natural cotton fiber. The raw material of the modified polyester fiber includes the following components in parts by weight: 120 parts polyester chips, 5 parts wear-resistant filler, and polybutylene terephthalate (melt volume flow rate of 17 cm⁻¹). 3 / 10min, test conditions are 275℃ / 2.16kg, model is B 4406 G6) 15 parts, antioxidant 168 0.3 parts, butyl stearate 0.4 parts, polyether ester antistatic agent 0.2 parts; The preparation method of wear-resistant filler includes the following steps: A1. Disperse 12 parts of tetraethyl orthosilicate in a 60 wt% aqueous ethanol solution, adjust the pH to 8.0 to obtain a sol solution, with a mass-to-volume ratio of tetraethyl orthosilicate to aqueous ethanol solution of 1 g: 15 g / mL; disperse 100 parts of sericite in water to obtain a suspension, with a mass-to-volume ratio of sericite to water of 1 g: 15 g / mL. A2. Add the sol solution to the suspension and mix at 55°C for 2 hours. After filtration, washing and drying, a silica coating layer is formed, and silica-coated sericite is obtained. A3. Add zinc nitrate aqueous solution to silica-coated sericite, adjust the pH to 8.0~9.0, mix at 65℃ for 1.5h, then filter, wash, dry, and calcine at 600℃ for 2h to form a zinc oxide coating layer, thus obtaining a wear-resistant filler; in the zinc nitrate aqueous solution, zinc nitrate is 4 parts, and the mass-volume ratio of zinc nitrate to water is 1g:20mL; A process for preparing abrasion-resistant polyester-cotton fabric is the same as in Example 1.

[0025] Example 4 Compared with Example 1, the only difference in this example is that the amount of tetraethyl orthosilicate in this example is 10 parts; and the amount of zinc nitrate in the zinc nitrate aqueous solution is 6 parts.

[0026] Example 5 Compared with Example 1, the only difference in this example is that the amount of tetraethyl orthosilicate in this example is 11.2 parts; and the amount of zinc nitrate in the zinc nitrate aqueous solution is 4.8 parts.

[0027] Example 6 Compared with Example 1, the only difference in this example is that, in this example, the polybutylene terephthalate is composed of a first polybutylene terephthalate with a mass ratio of 4:1 (melt volume flow rate of 17 cm⁻¹). 3 / 10min, test conditions were 275℃ / 2.16kg, model B 4406 G6) and second polybutylene terephthalate (melt volume flow rate of 5cm) 3 The test conditions were 275℃ / 2.16kg, and the model was B 4300 G4.

[0028] Example 7 Compared with Example 1, the only difference in this example is that, in this example, the polybutylene terephthalate is composed of a first polybutylene terephthalate with a mass ratio of 5:1 (melt volume flow rate of 17 cm⁻¹). 3 / 10min, test conditions were 275℃ / 2.16kg, model B 4406 G6) and second polybutylene terephthalate (melt volume flow rate of 5cm) 3 The test conditions were 275℃ / 2.16kg, and the model was B 4300 G4.

[0029] Example 8 Compared with Example 1, the only difference in this example is that, in this example, the polybutylene terephthalate is composed of a first polybutylene terephthalate with a mass ratio of 6:1 (melt volume flow rate of 17 cm⁻¹). 3 / 10min, test conditions were 275℃ / 2.16kg, model B 4406 G6) and second polybutylene terephthalate (melt volume flow rate of 5cm) 3 The test conditions were 275℃ / 2.16kg, and the model was B 4300 G4.

[0030] Example 9 Compared with Example 1, the only difference in this example is that the melt volume flow rate of polybutylene terephthalate is 5 cm⁻¹. 3 / 10min, test conditions were 275℃ / 2.16kg, model was B 4300 G4.

[0031] Comparative Example 1 Compared with Example 1, the only difference in this comparative example is that the wear-resistant filler in this comparative example is sericite.

[0032] Comparative Example 2 Compared with Example 1, the only difference in this comparative example is that the preparation method of the wear-resistant filler in this comparative example includes the following steps: A1. Disperse 8.5 parts of tetraethyl orthosilicate in a 60wt% aqueous ethanol solution, adjust the pH to 7.5 to obtain a sol solution, with a mass-to-volume ratio of tetraethyl orthosilicate to aqueous ethanol solution of 1g:10g / mL; disperse 100 parts of sericite in water to obtain a suspension, with a mass-to-volume ratio of sericite to water of 1g:20g / mL. A2. Add the sol solution to the suspension, mix at 45°C for 3 hours, then filter, wash and dry to form a silica coating layer. Calcine at 500°C for 3 hours to obtain the wear-resistant filler.

[0033] Comparative Example 3 Compared with Example 1, the only difference in this comparative example is that the preparation method of the wear-resistant filler in this comparative example includes the following steps: A1. Disperse 100 parts of sericite in water to obtain a suspension. The mass-volume ratio of sericite to water is 1g:20g / mL. A2. Add zinc nitrate aqueous solution to the suspension, adjust the pH to 8.0, mix at 55℃ for 2.5h, then filter, wash, dry, and calcine at 500℃ for 3h to form a zinc oxide coating layer, thus obtaining the wear-resistant filler; in the zinc nitrate aqueous solution, zinc nitrate is 7.5 parts, and the mass-volume ratio of zinc nitrate to water is 1g:20mL.

[0034] Comparative Example 4 Compared with Example 1, the only difference in this comparative example is that the preparation method of the wear-resistant filler in this comparative example includes the following steps: A1. Disperse 100 parts of sericite in water to obtain a suspension. The mass-volume ratio of sericite to water is 1g:20g / mL. A2. Add zinc nitrate aqueous solution to the suspension, adjust the pH to 8.0, mix at 55℃ for 2.5h, filter, wash and dry to form zinc oxide coating layer, and obtain zinc oxide coated sericite; in the zinc nitrate aqueous solution, zinc nitrate is 7.5 parts, and the mass-volume ratio of zinc nitrate to water is 1g:20mL; A3. Disperse 8.5 parts of tetraethyl orthosilicate in a 60wt% aqueous ethanol solution, adjust the pH to 7.5 to obtain a sol solution, with a mass-to-volume ratio of tetraethyl orthosilicate to aqueous ethanol solution of 1g:10g / mL; add the sol solution to zinc oxide-coated sericite, mix at 45℃ for 3h, then filter, wash, dry, and calcine at 500℃ for 3h to form a silica coating layer, thus obtaining a wear-resistant filler.

[0035] Experimental Example 1 The polyester-cotton fabrics prepared in Examples 1-5 and Comparative Examples 1-4 were tested for abrasion resistance using a Nu-Martindale 864 abrasion tester according to the method specified in GB / T21196.3-2007 "Textiles - Martindale Method - Determination of Abrasion Resistance of Fabrics - Part 3: Determination of Mass Loss". The fabrics were cut into circles with a diameter of 38±0.5 mm. Standard 600-grit wet sandpaper was used as the abrasive (replaced after 5000 abrasion cycles). The pressure was 9 kPa. The abrasion resistance endpoint was defined as the breakage of two independent yarns in the fabric. The number of abrasion cycles was recorded. The test results are shown in Table 1. Table 1. Test results of abrasion resistance of polyester-cotton fabric

[0036] The data in Table 1 show that the addition of wear-resistant fillers, consisting of sericite, silica coating, and zinc oxide coating from the inside out, can improve the wear resistance of polyester-cotton fabric.

[0037] Experimental Example 2 The modified polyester fibers prepared in Examples 1, 6-9 were tested according to the method in standard GB / T14344-2022 "Test Method for Tensile Properties of Chemical Fiber Filaments". The elongation at break was measured under the conditions of a spacing length of 500 mm and a moving clamp speed of 500 mm / min. The test results are shown in Table 2. Table 2 Results of Polyester Fiber Elongation at Break Test

[0038] The data in Table 2 show that when polybutylene terephthalate composed of two polybutylene terephthalates with different melt volume flow rates is added to the modified polyester fiber, the elongation at break of the modified polyester fiber in the polyester-cotton fabric can be improved.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wear-resistant polyester-cotton fabric, characterized in that, It is made of modified polyester fiber and natural cotton fiber blend; the raw materials of the modified polyester fiber include the following components in parts by weight: 100-120 parts polyester chips, 3-5 parts wear-resistant filler, 5-15 parts polybutylene terephthalate, 0.1-0.3 parts antioxidant, 0.2-0.4 parts lubricant, and 0.1-0.2 parts antistatic agent; The wear-resistant filler consists of sericite, a silica coating layer, and a zinc oxide coating layer from the inside out; the wear-resistant filler comprises the following raw materials in parts by weight: 100 parts sericite, 8-12 parts tetraethyl orthosilicate, and 5-8 parts zinc nitrate.

2. The wear-resistant polyester-cotton fabric according to claim 1, characterized in that, The mass ratio of tetraethyl orthosilicate to zinc nitrate is 3.4~7.0:

3.

3. The wear-resistant polyester-cotton fabric according to claim 1, characterized in that, The method for preparing the wear-resistant filler includes the following steps: A1. Disperse tetraethyl orthosilicate in an aqueous ethanol solution and adjust the pH to 7.5-8.0 to obtain a sol solution; disperse sericite in water to obtain a suspension. A2. The sol solution is added to the suspension and mixed, then filtered, washed and dried to form a silica coating layer, thus obtaining silica-coated sericite. A3. Add zinc nitrate aqueous solution to the silica-coated sericite, adjust the pH to 8.0~9.0, mix, and then filter, wash, dry and calcine to form a zinc oxide coating layer to obtain the wear-resistant filler.

4. The wear-resistant polyester-cotton fabric according to claim 3, characterized in that, In step A3, the calcination temperature is 500~600℃ and the calcination time is 2~3h.

5. The wear-resistant polyester-cotton fabric according to claim 1, characterized in that, The polybutylene terephthalate includes a first polybutylene terephthalate and a second polybutylene terephthalate; the first polybutylene terephthalate and the second polybutylene terephthalate have different melt volume flow rates.

6. The wear-resistant polyester-cotton fabric according to claim 5, characterized in that, The melt volume flow rate of the first polybutylene terephthalate is 11~37 cm⁻¹. 3 The test conditions were 275℃ / 2.16kg for 10 minutes; the melt flow rate of the second polybutylene terephthalate was 3~8cm. 3 / 10min, test conditions were 275℃ / 2.16kg.

7. The wear-resistant polyester-cotton fabric according to claim 6, characterized in that, The mass ratio of the first polybutylene terephthalate to the second polybutylene terephthalate is 4~6:

1.

8. The wear-resistant polyester-cotton fabric according to claim 1, characterized in that, The antioxidants include one or more of antioxidants 1010, antioxidant 1076, and antioxidant 168.

9. The wear-resistant polyester-cotton fabric according to claim 1, characterized in that, The lubricant includes one or both of pentaerythritol stearate and butyl stearate.

10. A process for preparing abrasion-resistant polyester-cotton fabric, used to prepare the abrasion-resistant polyester-cotton fabric as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. After the raw materials of the modified polyester fiber are mixed evenly, the modified polyester masterbatch is obtained by melt extrusion granulation. S2. The modified polyester masterbatch is melt-spun to obtain modified polyester fiber; S3. The modified polyester fiber and natural cotton fiber are blended and woven to obtain the wear-resistant polyester-cotton fabric.

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