Hydrophobic and lipophilic composite needle-punched nonwoven fabric and preparation method thereof

Abstract

The invention relates to a water-repellent and lipophilic composite needle-punched non-woven fabric and a preparation method thereof, comprising the following steps: blending PET fibers and polyolefin fibers according to a mass ratio of 3:1-1:3, and acupuncture The composite needle-punched non-woven fabric is obtained; the composite needle-punched non-woven fabric is heat-baked at 110-160° C. for 40-90 minutes; the modified resin-based fluorine-free water repellent with a concentration of 50-70mL / L is used The water-repellent padding and water-repellent finishing is carried out on the heat-dried fabric with the aqueous solution. The air pressure of the pad-pad water-repellent finishing is 1.8kPa, and the liquid carrying rate is 160%-230%. After drying, a water-repellent and lipophilic composite needle-punched nonwoven fabric is obtained. . The preparation method of the present invention is simple, and compared with the fabric before treatment, the water repellency, lipophilicity and tensile strength of the prepared composite needle-punched nonwoven fabric are obviously improved.

Description

technical field [0001] The invention relates to the technical field of textile finishing, in particular to a water-repellent and lipophilic composite needle-punched nonwoven fabric and a preparation method thereof. Background technique [0002] With the development of science and technology, crude oil spills and oily wastewater discharges from factories have had a great impact on the ocean and river environments, posing a threat to the human environment. Water-repellent and lipophilic materials have special wetting properties, which can absorb oily liquid in water, but do not absorb excess water, resulting in separation of water and oil, so as to purify water sources. [0003] Using water-repellent and lipophilic materials to deal with oil pollution is a low-cost and high-efficiency method. Using textiles as the base to construct water-repellent and lipophilic surfaces increases the application value of textiles. In recent years, the development momentum of non-woven techno...

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Problems solved by technology

[0004] Chinese patent CN102953268A discloses a preparation method of super-oleophilic and super-hydrophobic oil-water separation polyester textiles. Although the fabric is treated with a fluorine-free water repellent, the preparation method is complicated to operate, and the tensile strength of the textile does not increase after treatment. be improved

The Chinese document "Preparation and performance research of modified MBPP / water-repellent PET composite oil-absorbing material, Wang Dan et al., Industrial Textiles, 2016, (1): 6-11, 44" discloses the preparation method of composite oil-absorbing material based on PET , although fluorine-free water repellent is also used to treat the fabric, the oil absorption rate of the composite material prepared by this method is still unsatisfactory when it is repeatedly used, and the strength of the fabric has not been significantly improved

[0005] At present, the use of water-repellent and lipophilic materials to deal with oil pollution is still in the research and development stage, so the existing water-repellent and lipophilic products still have certain problems, such as complex production process, poor product comprehensive performance, low oil-water separation efficiency, and product Disadvantages such as high cost and poor absorption capacity, especially the water-repellent treatment in the process of lipophilicity tends to cause too much or too little water absorption

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