CN-117758392-B - Degradable moisture-absorbing quick-drying microporous composite fiber, and preparation method and application thereof

Abstract

The invention provides a degradable moisture-absorbing quick-drying microporous composite fiber, a preparation method and application thereof, belonging to the field of preparation and application of functional textiles, wherein the preparation method of the degradable moisture-absorbing quick-drying microporous composite fiber comprises the steps of blending and spinning poly (adipic acid)/poly (butylene terephthalate) and polyvinyl alcohol to form a composite fiber with a skin-core structure; and then, carrying out after-treatment on the composite fiber with the sheath-core structure to remove the polyvinyl alcohol part and form a surface microporous structure, thus obtaining the degradable moisture-absorbing quick-drying microporous composite fiber. The degradable moisture-absorbing quick-drying microporous fiber (yarn), fabric and clothing are developed through a series of technological processes of selecting degradable raw materials, spinning, finishing and the like, so that the environment-friendly requirement and functional requirement of consumers on sports shoes and clothing are met.

Inventors

• ZHAO SHANGZHEN
• ZENG GUOPING
• LIU CHAO
• YE JIEMAO
• SONG HUIHUI
• ZHANG WEIQIANG
• ZHONG XIN
• LAI YUKUN

Assignees

• 安踏（中国）有限公司

Dates

Publication Date

20260508

Application Date

20231221

Claims (8)

1. 1. A method for preparing degradable moisture-absorbing quick-drying microporous composite fiber, which is characterized by comprising the following steps: mixing a slice of poly (adipic acid)/poly (butylene terephthalate) and polyvinyl alcohol, and then carrying out melt granulation to obtain blending particles, wherein the mass ratio of the slice of poly (adipic acid)/poly (butylene terephthalate) to the polyvinyl alcohol is 100-110:10-20; Melting the blended particles to form a sheath spinning melt, taking a melt of poly (adipic acid)/butylene terephthalate as a core spinning melt, and spinning through a skin-core type composite spinning component to obtain a composite fiber with a sheath-core structure, wherein the sheath spinning temperature is 190-210 ℃ and the core spinning temperature is 200-210 ℃ in the spinning process; The composite fiber with the skin-core structure is subjected to 70-100 ℃ hot water washing, wherein the 70-100 ℃ hot water washing comprises the steps of performing first hot water washing at 90-100 ℃ by adopting hot water containing sodium carbonate, preserving heat for 20-30min, performing second hot water washing at 70-80 ℃ by adopting hot water containing glacial acetic acid, and drying to obtain the degradable moisture-absorption quick-drying microporous composite fiber.
2. 2. The process according to claim 1, wherein the poly (butylene adipate/terephthalate) has a melting point of 120 to 150 ℃ and a weight average molecular weight of 12 to 15 ten thousand.
3. 3. The method according to claim 1, wherein the polyvinyl alcohol has a polymerization degree of 300 to 500 and an alcoholysis degree of 90 to 95%.
4. 4. The method of claim 1, wherein the mass ratio of skin to core in the skin-core structure is 1:9-3:7.
5. 5. The method according to any one of claims 1 to 4, wherein the second hot water washing is followed by cold water washing, and drying to obtain the degradable moisture-absorbing quick-drying microporous composite fiber.
6. 6. A degradable moisture-absorbing quick-drying microporous composite fiber, characterized in that the fiber is prepared by the preparation method of any one of claims 1-5, has a sheath-core structure and has a fiber fineness of 50D-75D.
7. 7. A fabric which is woven by the degradable moisture-absorbing quick-drying microporous composite fiber according to claim 6.
8. 8. A garment comprising the fabric of claim 7.

Description

Degradable moisture-absorbing quick-drying microporous composite fiber, and preparation method and application thereof Technical Field The invention belongs to the field of preparation and application of functional textiles, and particularly relates to a degradable moisture-absorbing quick-drying microporous composite fiber, a preparation method and application thereof. Background In recent years, with the continuous development of textile industry technology and the continuous improvement of living standard of people, people are more in favor of healthy living modes, participation and investment of sports are more and more, and requirements on sports clothes are not limited to styles, colors and the like, but are raised more requirements on comfort and functionality. Meanwhile, as global climate warms and pollution is aggravated, the cognitive level of consumers on environmental protection is continuously improved, and the environmental protection consciousness of consumers is continuously enhanced. In addition, consumers have in recent years become more concerned about the health of individuals and family members, and more participation in sports, particularly running sports, has a relatively simple requirement for equipment and places, which is a broader simple sport. The marathon exercise is a running project with high energy consumption and high perspiration, and the requirements on the exercise clothing are higher than those of other exercises. The moisture absorption and quick drying functions are the most basic and one of the most core requirements on running clothes, and the existing running clothes mainly comprise some conventional polyester blended fabrics, but cannot well meet the moisture absorption and quick drying and degradability. Disclosure of Invention In view of the above, the invention provides a degradable moisture-absorbing quick-drying microporous composite fiber, a preparation method thereof, a fabric, clothing and other applications. The invention provides a preparation method of degradable moisture-absorbing quick-drying microporous composite fiber, which comprises the following steps: And then, carrying out after-treatment on the composite fiber with the skin-core structure to remove the polyvinyl alcohol part and form a surface microporous structure, thus obtaining the degradable moisture-absorption quick-drying microporous composite fiber. In an embodiment of the invention, the poly (adipic acid)/poly (butylene terephthalate) has a melting point of 120-150 ℃ and a weight average molecular weight of 12-15 ten thousand. In an embodiment of the present invention, the polyvinyl alcohol has a polymerization degree of 300 to 500 and an alcoholysis degree of 90 to 95%. In the embodiment of the invention, the mass ratio of the sheath layer to the core layer in the sheath-core structure is 1:9-3:7. In an embodiment of the invention, the preparation method comprises the following steps: mixing a slice of poly (adipic acid)/poly (butylene terephthalate) and polyvinyl alcohol, and then carrying out melt granulation to obtain blending particles, wherein the mass ratio of the slice of poly (adipic acid)/poly (butylene terephthalate) to the polyvinyl alcohol is 100-110:10-20; Melting the blending particles to form a cortex spinning melt, taking a melt of poly (adipic acid)/butylene terephthalate as a core spinning melt, and spinning through a skin-core type composite spinning component to obtain composite fibers with a skin-core structure; and (3) carrying out hot water washing at 70-100 ℃ on the composite fiber with the skin-core structure, and drying to obtain the degradable moisture-absorption quick-drying microporous composite fiber, or carrying out hot water washing at 70-100 ℃ on the composite fiber with the skin-core structure after weaving the composite fiber into a fabric, and drying to obtain the degradable moisture-absorption quick-drying microporous composite fiber. In an embodiment of the invention, the spinning temperature of the sheath layer is 190-210 ℃ and the spinning temperature of the core layer is 200-210 ℃ in the spinning process. In the embodiment of the invention, the hot water washing at 70-100 ℃ comprises the steps of firstly adopting hot water containing sodium carbonate to carry out first hot water washing at 90-100 ℃, preserving heat for 20-30min, and then adopting hot water containing glacial acetic acid to carry out second hot water washing at 70-80 ℃; and the second hot water washing step further comprises cold water washing, and drying to obtain the degradable moisture-absorbing quick-drying microporous composite fiber. The invention provides a degradable moisture-absorbing quick-drying microporous composite fiber which is prepared by the preparation method and has a skin-core structure, and the fiber fineness can be 50D-75D. The invention provides a fabric which is woven by adopting the degradable moisture-absorbing quick-drying microporous composite fiber. T