阅读说明：本技术 含颜色的羊毛/聚丙烯复合纤维及其制备方法 (Color-containing wool/polypropylene composite fiber and preparation method thereof ) 是由 彭雄义 邓健 刘仰硕 粟斯伟 王强 于 2019-10-06 设计创作，主要内容包括：本发明涉及含颜色的羊毛/聚丙烯复合纤维及其制备方法。该复合纤维可由下述制备方法制得：将废旧羊毛织物进行清洗,将其研磨成粉和过筛网,制得粒径均匀的羊毛粉体；然后,将羊毛粉体与聚丙烯颗粒共混、造粒,制得各种不同颜色的聚丙烯颗粒；最后,将不同颜色的聚丙烯颗粒通过熔融纺丝的方法纺制含颜色的羊毛/聚丙烯复合纤维。本发明制备的含颜色的羊毛/聚丙烯复合纤维比聚丙烯纤维更加柔软；羊毛/聚丙烯复合纤维的干断裂强度与聚丙烯纤维接近；其干断裂伸长率比聚丙烯纤维大,结果表明：本发明制备的羊毛/聚丙烯复合纤维的强力性能均达到纺纱纤维材料的要求。(The invention relates to a color-containing wool/polypropylene composite fiber and a preparation method thereof. The composite fiber can be prepared by the following preparation method: cleaning waste wool fabrics, grinding the waste wool fabrics into powder and sieving the powder by a screen to prepare wool powder with uniform particle size; then, blending and granulating the wool powder and the polypropylene particles to prepare polypropylene particles with different colors; finally, the polypropylene particles with different colors are spun into wool/polypropylene composite fibers containing colors by a melt spinning method. The color-containing wool/polypropylene composite fiber prepared by the method is softer than polypropylene fiber; the dry breaking strength of the wool/polypropylene composite fiber is close to that of the polypropylene fiber; the dry breaking elongation of the fiber is larger than that of polypropylene fiber, and the result shows that: the strength performance of the wool/polypropylene composite fiber prepared by the invention meets the requirements of spinning fiber materials.)

1. A colored wool/polypropylene composite fiber, characterized in that the composite fiber is obtainable by a process comprising: cleaning waste wool fabrics, grinding the waste wool fabrics into powder and sieving the powder by a screen to prepare wool powder with uniform particle size; then, blending and granulating the wool powder and the polypropylene particles to prepare polypropylene particles with different colors; finally, the polypropylene particles with different colors are spun into wool/polypropylene composite fibers containing colors by a melt spinning method.

2. A method for preparing a color-containing wool/polypropylene composite fiber according to claim 1, comprising the steps of:

(1) Cleaning waste wool fabrics: selecting various different waste wool fabrics, cleaning the waste wool fabrics by using a wool cleaning agent, and airing the waste wool fabrics;

(2) Preparing wool powder: shearing waste wool fabrics, grinding the waste wool fabrics into powder by a grinder, and then sieving the powder by a 100-mesh sieve to prepare a powder material with uniform particle size;

(3) Blending: blending the wool powder prepared in the step (2) and polypropylene particles on a screw extruder, and granulating to prepare polypropylene particles with different colors;

(4) Preparing a spinning solution: spinning the polypropylene particles with different colors prepared in the step (3) into fibers by a melt spinning method, wherein the temperature of the spinning solution is as follows: the temperature is 165-175 ℃, and the drawing speed is 500-700 m/min;

(5) And (3) post-treatment: and oiling, drafting and winding the spun silk yarn to obtain the color-containing wool/polypropylene composite fiber.

3. the method of preparing a color-containing wool/polypropylene composite fiber according to claim 2, wherein: the waste wool fabric in the step (2) comprises the following fabrics: woolen sweater, woolen pants or wool fabric with the content of 100 percent; the colors of the waste wool fabrics are the same in the same batch.

4. The method of preparing a color-containing wool/polypropylene composite fiber according to claim 2, wherein: the mass ratio of the wool powder (g) to the polypropylene particles (g) in the step (3) is as follows: 1: 10-20.

Technical Field

The invention belongs to the technical field of composite fibers, and particularly relates to a color-containing wool/polypropylene composite fiber and a preparation method thereof.

Background

The polypropylene fiber is a synthetic fiber spun by polypropylene obtained by polymerizing propylene as a raw material, has the advantages of good luster, soft hand feeling, good drapability, low density and the like, is suitable for the knitting industry, is interwoven with cotton, viscose, real silk, spandex and the like into products such as cotton gaide, silk gaide and the like, and is an ideal material for manufacturing high-grade sportswear, T-shirts and the like. However, when the single polypropylene fiber is prepared into a fabric, the fabric is not easy to dye due to the very stable chemical property of the single polypropylene fiber; typically, polypropylene fibers are blended with other fibers.

Wool is an important natural fiber material, the main component of which is keratin which is rich in various amino acids and has good health care performance. Wool plays an important role in the growth of the human civilization history, and is an important raw material since the development of the textile industry. With the increasing living standard, people accelerate the updating of clothes, a lot of waste woolen clothes are abandoned, the waste woolen clothes have various colors, and how to more efficiently utilize the waste woolen clothes becomes a problem to be solved urgently.

At present, various composite fibers are developed vigorously, and the composite fibers can make up the defects of single fibers and realize fiber multifunctionalization, such as: chinese patent application No. 201410457094.5 discloses a preparation method of polyurethane glass fiber composite fiber cloth, wherein a polyurethane coating is coated on a single glass fiber precursor to obtain polyurethane/glass fiber composite fiber, and the stiffness, the dispersibility and the smoothness of textile yarns are effectively enhanced. Therefore, the composite fiber prepared by mixing different raw materials can have the advantages of different raw material fibers.

The waste wool clothes are dyed and have colors; polypropylene fibers are not easily dyed. If the waste wool clothes and the polypropylene fibers can be mixed and spun to realize advantage complementation, the research has important significance, and literature research shows that the research on the aspect is rarely reported.

Disclosure of Invention

The invention aims to provide a color-containing wool/polypropylene composite fiber, which solves the defects in the prior art, the composite fiber does not need to be dyed, and the softness of the composite fiber is obviously enhanced; in addition, the high-efficiency utilization of the waste wool fabric is realized.

The invention aims to provide a color-containing wool/polypropylene composite fiber which can be prepared by the following preparation method: cleaning waste wool fabrics, grinding the waste wool fabrics into powder and sieving the powder by a screen to prepare wool powder with uniform particle size; then, blending and granulating the wool powder and the polypropylene particles to prepare polypropylene particles with different colors; finally, the polypropylene particles with different colors are spun into wool/polypropylene composite fibers containing colors by a melt spinning method.

The invention also aims to provide a preparation method of the wool/polypropylene composite fiber containing color, which comprises the following steps:

(1) cleaning waste wool fabrics: selecting various waste wool fabrics, cleaning the waste wool fabrics by using a wool cleaning agent, and airing the waste wool fabrics.

(2) Preparing wool powder: the waste wool fabric is cut into pieces, ground into powder by a grinder, and then the powder is screened by a 100-mesh screen to prepare the powder material with uniform particle size.

Preferably, the waste wool fabric comprises the following fabrics: woolen sweater, woolen pants or wool fabric with the content of 100 percent; the colors of the waste wool fabrics are the same in the same batch.

(3) Blending: and (3) blending the wool powder prepared in the step (2) and polypropylene particles on a screw extruder, and granulating to prepare the polypropylene particles with different colors.

Preferably, the mass ratio of the wool powder (g) to the polypropylene particles (g) is: 1: 10-20.

(4) Preparing a spinning solution: spinning the polypropylene particles with different colors prepared in the step (3) into fibers by a melt spinning method, wherein the temperature of the spinning solution is as follows: 165-175 ℃ and a drawing speed of 500-700 m/min.

(5) And (3) post-treatment: and oiling, drafting and winding the spun silk yarn to obtain the color-containing wool/polypropylene composite fiber.

The invention has the following advantages:

(1) The color-containing wool/polypropylene composite fiber prepared by the invention has color, and can be applied without dyeing in the subsequent re-application process.

(2) The initial modulus of the colored wool/polypropylene composite fibers prepared by the invention is obviously smaller than that of the polypropylene fibers purchased in the market, which shows that: the colored wool/polypropylene composite fibers are softer than commercially available polypropylene fibers.

(3) the single fiber diameter of the color-containing wool/polypropylene composite fiber prepared by the invention is slightly larger than that of the polypropylene fiber purchased in the market. The dry breaking strength of the wool/polypropylene composite fiber is close to that of the polypropylene fiber purchased in the market; the dry breaking elongation is larger than that of the polypropylene fiber purchased in the market. From the test results, the apparent appearance and the strength performance of the wool/polypropylene composite fiber meet the requirements of spinning fiber materials.

(4) the color-containing wool/polypropylene composite fiber prepared by the method has the advantages of wide raw material source, simple preparation process and good popularization and application value. The method realizes the efficient application of the waste wool fabric, makes up the defect of poor dyeing property of the polypropylene fiber, and leads the waste wool fabric and the polypropylene fiber to form better complementation.

Drawings

FIG. 1A color-containing wool/polypropylene composite fiber a prepared in example 1 of the present invention.

Detailed Description

The examples described below illustrate the invention in detail.