阅读说明：本技术 一种废旧纺织纤维非织造涂层材料的制备方法 (Preparation method of waste textile fiber non-woven coating material ) 是由 陈维国 郑今欢 王成龙 于 2019-11-04 设计创作，主要内容包括：本发明公开了一种废旧纺织纤维非织造涂层材料的制备方法,包括如下步骤：(1)适用于涂层加工的废旧纺织纤维非织造布的制备；(2)涂层材料的制备。选择适合的针刺工艺以及后处理工艺,可将废旧纺织品制备成适用于涂层加工的非织造布,在基础上,利用尼龙废丝涂层浆,通过湿法涂层制备废旧纺织纤维非织造涂层布。不仅可以实现废旧纺织品循环利用,而且通过进一步涂层和印花加工提高废旧纺织品的利用附加值。(The invention discloses a preparation method of a waste textile fiber non-woven coating material, which comprises the following steps: (1) preparing waste textile fiber non-woven fabric suitable for coating processing; (2) and (4) preparing a coating material. The waste textile can be prepared into the non-woven fabric suitable for coating processing by selecting a proper needling process and a proper post-treatment process, and the waste textile fiber non-woven coated fabric is prepared by utilizing the nylon waste silk coating pulp through wet coating on the basis. Not only can the waste textiles be recycled, but also the additional value of the waste textiles can be improved through further coating and printing processing.)

1. A preparation method of a waste textile fiber non-woven coating material is characterized by comprising the following steps:

(1) preparing the waste textile fiber non-woven fabric suitable for coating processing:

sending the waste textile into an opener for opening treatment to prepare waste textile fibers, adding 0-5% of low-melting-point polyester fibers, and preparing waste textile fiber non-woven fabric by carding, fine carding, net stacking, needling, hot pressing and other processes with the help of needling equipment;

(2) preparation of the coating material:

preparing nylon waste silk coating pulp, uniformly coating the nylon waste silk coating pulp on the prepared waste textile fiber non-woven fabric, solidifying the coated non-woven fabric in water bath at 15-25 ℃, and solidifying for 30-80 seconds at the temperature of 100-150 ℃ after full solidification to prepare the waste textile fiber non-woven coating material.

2. The method for preparing the waste textile fiber non-woven coating material according to claim 1, wherein the method comprises the following steps: before the waste textiles are used, the waste textiles are disinfected by disinfection equipment and then are sent into an opener after being disinfected.

3. The method for preparing the waste textile fiber non-woven coating material according to claim 1, wherein the method comprises the following steps: the waste textile fibers are short fibers.

4. The method for preparing the waste textile fiber non-woven coating material according to claim 1, wherein the method comprises the following steps: and (3) pretreating the obtained waste textile fiber non-woven fabric, wherein the pretreatment is hot-pressing treatment, the temperature is 100-200 ℃, the pressure is 10-30Mpa, and the time is 60-240s, and the waste textile fiber non-woven fabric suitable for coating processing is obtained after pretreatment.

5. The method for preparing the waste textile fiber non-woven coating material according to claim 1, wherein the method comprises the following steps: the preparation of the nylon waste silk coating slurry in the step (2) comprises the following specific steps: fully stirring and mixing 1-50 parts of anhydrous calcium chloride and 20-100 parts of anhydrous methanol at the temperature of 65 ℃ for reaction, adding 1-20 parts of nylon 6 waste silk for dissolution after the reaction is finished, adding 2-50 parts of a filling agent under high-speed stirring after the waste silk is completely dissolved, and uniformly stirring at high speed for later use.

6. The method for preparing the waste textile fiber non-woven coating material according to claim 5, wherein the method comprises the following steps: the purity of the methanol is more than 99.7 percent.

7. The method for preparing the waste textile fiber non-woven coating material according to claim 5, wherein the method comprises the following steps: the filler is an inorganic filler, and the inorganic filler is one or more of kaolin, silicon dioxide, sodium carbonate or wollastonite.

8. The method for preparing the waste textile fiber non-woven coating material according to claim 1, wherein the method comprises the following steps: the methanol content in the water bath for coagulation is not more than 15%.

Technical Field

The invention belongs to the field of textile processing, and particularly relates to a non-woven coating material designed by recycling waste textile fibers and a processing method thereof.

Background

The textile industry is closely related to the life of people, along with the expansion of the application field of textiles, the rapid growth of the world population, the increasing shortage of textile raw materials and the rising price of the textile raw materials are achieved, a large amount of waste textiles are buried and burned as garbage, and the burying and the burning can generate a large amount of harmful gases and difficultly-degraded substances, so that the resource waste is caused, and the environment is polluted. In recent years, the recycling industry of textile waste in China is rapidly developed. At present, two modes of chemical treatment and physical treatment are mainly used for recycling waste textiles. For example, patent 201710700676.5 discloses a waste fibrous nonwoven fabric prepared by consolidating a structure with three layers of webs, an upper new web layer, a middle waste web layer and a lower new web layer, by a stitch-bonding nonwoven process. Patent 201610276905.0 discloses sterilizing waste textile, degrading protein, regenerating, cleaning, winding, twisting, warping, sizing, drawing in warp and weaving. The patent 201611174221.6 discloses a wool nonwoven material made from various waste clothes by pre-treating the clothes by insolation, gas sterilization, ultrasonic cleaning and crushing into blocks, and then mixing and spinning. In the patent 201810068865, after the treatment of sorting, crushing, decoloring, washing, dissolving and the like, waste polyester textiles are directly dissolved to prepare an electrostatic spinning raw material, and then the regenerated spinning solution is subjected to electrostatic spinning to prepare regenerated polyester non-woven fabric. However, at present, no report is found on a non-woven fabric material which is designed by recycling waste textile fibers and is processed into a non-woven fabric material with gorgeous patterns, leather appearance and soft hand feeling through coating and ink-jet printing.

The coating finishing can change the surface structure of the non-woven base fabric, obtain unique appearance style, cover the original color of the waste textile fiber, improve printing performance, and enable the coated fabric to obtain the functions of water resistance, stain resistance, wear resistance, flame retardance and the like, thereby further expanding the application field of the waste textile fiber non-woven fabric, and improving the practicability and the service life.

Disclosure of Invention

The invention aims to provide a preparation method of a waste textile fiber non-woven coating material, which can prepare waste textiles into non-woven fabrics suitable for coating processing by selecting suitable processes such as needling and the like and post-treatment processes, and prepares the waste textile fiber non-woven coating fabrics by utilizing nylon waste silk coating pulp and wet coating. Not only can the waste textiles be recycled, but also the additional value of the waste textiles can be improved through further coating and printing processing.

In order to solve the technical problems, the following technical scheme is adopted:

a preparation method of a waste textile fiber non-woven coating material is characterized by comprising the following steps:

(1) preparing the waste textile fiber non-woven fabric suitable for coating processing:

the waste textile is sent into an opener for opening treatment to prepare waste textile fibers, 0-5% of low-melting-point polyester fibers are added, and the waste textile fiber non-woven fabric is prepared by processes of carding, fine carding, net stacking, needling, hot pressing and the like by means of needling equipment.

(2) Preparation of the coating material:

preparing nylon waste silk coating pulp, uniformly coating the nylon waste silk coating pulp on the prepared waste textile fiber non-woven fabric, solidifying the coated non-woven fabric in water bath at 15-25 ℃, and solidifying for 30-80 seconds at the temperature of 100-150 ℃ after full solidification to prepare the waste textile non-woven coating material.

Preferably, the waste textiles are disinfected by disinfection equipment before being used and then are sent into an opener after being disinfected.

Preferably, the waste textile fibers are short fibers.

Preferably, the obtained waste textile fiber non-woven fabric is subjected to pretreatment, wherein the pretreatment is hot pressing treatment, the temperature is 100-200 ℃, the pressure is 10-30Mpa, and the time is 60-240s, and the waste textile fiber non-woven fabric suitable for coating processing is obtained after the pretreatment.

Preferably, the preparation of the nylon waste silk coating pulp in the step (2) comprises the following specific steps: fully stirring and mixing 1-50 parts of anhydrous calcium chloride and 20-100 parts of anhydrous methanol at the temperature of 65 ℃ for reaction, adding 1-20 parts of nylon 6 waste silk for dissolution after the reaction is finished, adding 2-50 parts of a filling agent under high-speed stirring after the waste silk is completely dissolved, and uniformly stirring at high speed for later use.

Preferably, the purity of the methanol is 99.7% or more.

Preferably, the filler is an inorganic filler, and the inorganic filler is one or more of kaolin, silicon dioxide, sodium carbonate or wollastonite.

Preferably, the methanol content of the coagulation water bath does not exceed 15%.

Due to the adoption of the technical scheme, the method has the following beneficial effects:

the invention relates to a preparation method of a waste textile fiber non-woven coating material, which can prepare waste textiles into non-woven fabrics suitable for coating processing by selecting suitable processes such as needling and the like and post-treatment processes, and prepares the waste textile fiber non-woven coating fabrics by utilizing nylon waste silk coating pulp and wet coating. Not only can the waste textiles be recycled, but also the additional value of the waste textiles can be improved through further coating and printing processing. The concrete beneficial effects are as follows:

1. the used base materials and sizing agents are leftovers, leftover materials, waste silk and the like in the production process of textile related products and the preparation of waste textiles generated in daily life, so that the non-woven coating material prepared by using the waste textiles can meet the requirements of raw materials required by industrial production, reduce environmental pollution, save energy and realize the strategic goal of sustainable development;

2. the prepared non-woven fabric coating material can be further used for developing products such as bags, ground mats, coverings, decorative paintings and the like through later-stage printing processing.

3. The coating finishing can change the surface structure of the waste textile fiber non-woven fabric, obtain unique appearance style, cover the original color of the waste textile fiber, improve printing performance, and enable the coated fabric to obtain the functions of water resistance, stain resistance, wear resistance, flame retardance and the like, thereby further expanding the application field of the waste textile fiber non-woven fabric, and improving the practicability and the service life.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a flow chart of a method for preparing a waste textile fiber nonwoven coating material

Detailed Description

In the following experimental method examples, reagents, materials and equipment used in the following experimental method examples are commercially available or can be prepared by a conventional method unless otherwise specified, in order to make the technical scheme and features of the present invention more clearly understood and easily understood by those skilled in the art.