阅读说明：本技术 一种具有易清灰功能的芳纶耐高温布制备方法 (Preparation method of aramid fiber high-temperature-resistant cloth with easy ash removal function ) 是由 邓勇华 席如帆 余昌旺 于 2019-03-21 设计创作，主要内容包括：本发明涉及布料加工技术领域,尤其为一种具有易清灰功能的芳纶耐高温布制备方法,包括有以下步骤：S1,准备对苯二甲酰氯、对苯二胺、二甲基乙酰胺；S2,将对苯二甲酰氯、对苯二胺、二甲基乙酰胺进行混合；S3,将混合液进行沉淀、洗涤、干燥得到聚合体；S4,将聚合体放入浓硫酸中,进行搅拌充分溶解,得到明胶；S5,将明胶放入纺丝机中进行挤出成丝；S6,成丝后经过冷水、洗涤、干燥,得纺丝；S7,纺丝利用织布机加工成布料成品。本发明得到的布料成品具有易清灰的功能,且布料耐高温,可以广泛用于消防服、工作服、运动服的加工中。(The invention relates to the technical field of cloth processing, in particular to a preparation method of aramid fiber high-temperature-resistant cloth with an easy ash removal function, which comprises the following steps: s1, preparing paraphthaloyl chloride, paraphenylenediamine and dimethylacetamide; s2, mixing terephthaloyl chloride, p-phenylenediamine and dimethylacetamide; s3, precipitating, washing and drying the mixed solution to obtain a polymer; s4, putting the polymer into concentrated sulfuric acid, and stirring and fully dissolving to obtain gelatin; s5, putting the gelatin into a spinning machine for extrusion into filaments; s6, spinning, washing with cold water, and drying to obtain spun yarn; and S7, processing the spun yarn into a finished fabric product by using a loom. The fabric finished product obtained by the invention has the function of easy ash removal, is high-temperature resistant, and can be widely used for processing fire-fighting clothes, work clothes and sports clothes.)

1. The preparation method of the aramid fiber high-temperature-resistant cloth with the easy ash removal function is characterized by comprising the following steps of:

s1, preparing paraphthaloyl chloride, paraphenylenediamine and dimethylacetamide;

s2, mixing terephthaloyl chloride, p-phenylenediamine and dimethylacetamide;

s3, precipitating, washing and drying the mixed solution to obtain a polymer;

s4, putting the polymer into concentrated sulfuric acid, and stirring and fully dissolving to obtain gelatin;

s5, putting the gelatin into a spinning machine for extrusion into filaments;

s6, spinning, washing with cold water, and drying to obtain spun yarn;

and S7, processing the spun yarn into a finished fabric product by using a loom.

2. The preparation method of the aramid fiber high-temperature-resistant fabric with the easy ash removal function according to claim 1, wherein in the S1, the weight ratio of the paraphthaloyl chloride, the paraphenylenediamine and the dimethylacetamide is 20-30%: 30% -40%: 10 to 15 percent.

3. The preparation method of the aramid fiber high-temperature-resistant fabric with the easy ash removal function according to claim 1, wherein in the step S2, terephthaloyl chloride, p-phenylenediamine and dimethylacetamide are mixed in a stirrer and heated at 40-60 ℃ for 30-50 min.

4. The preparation method of the aramid fiber high-temperature-resistant fabric with the easy ash removal function as claimed in claim 1, wherein in the S4, the concentration of concentrated sulfuric acid is 100%, and the ratio of polymer to concentrated sulfuric acid is 15% -25% to 90% -100%.

5. The preparation method of the aramid fiber high-temperature-resistant fabric with the easy ash removal function according to claim 1, wherein in the S5, the temperature of a spinning machine is 95-105 ℃.

6. The preparation method of the aramid fiber high-temperature-resistant fabric with the easy ash removal function according to claim 1, wherein in S6, the temperature of cold water is 0-4 ℃, and acid is removed in a gelling bath.

Technical Field

The invention relates to the technical field of cloth processing, in particular to a preparation method of aramid fiber high-temperature-resistant cloth with an easy ash removal function.

Background

Fabric is the material used to make clothing. As one of the three elements of the garment, the fabric not only can explain the style and the characteristics of the garment, but also directly controls the expression effects of the color and the shape of the garment. Different fabrics have different performances of air permeability, moisture absorption, heat retention and the like, for example, cotton fabrics have good air permeability and moisture absorption, are comfortable to wear, have good heat retention, and are the most ideal fabric for children. When the fabric is selected, the air permeability, heat preservation, moisture absorption, electrostatic property and other performance characteristics of the fabric are determined, and the proper shape, style and the like of the fabric are considered according to the stiffness, weight feeling, hardness and drapability of the fabric.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a preparation method of aramid fiber high-temperature-resistant cloth with an easy ash removal function.

In order to achieve the purpose, the invention adopts the following technical scheme:

a preparation method of aramid fiber high-temperature-resistant cloth with an easy ash removal function comprises the following steps:

s1, preparing paraphthaloyl chloride, paraphenylenediamine and dimethylacetamide;

s2, mixing terephthaloyl chloride, p-phenylenediamine and dimethylacetamide;

s3, precipitating, washing and drying the mixed solution to obtain a polymer;

s4, putting the polymer into concentrated sulfuric acid, and stirring and fully dissolving to obtain gelatin;

s5, putting the gelatin into a spinning machine for extrusion into filaments;

s6, spinning, washing with cold water, and drying to obtain spun yarn;

and S7, processing the spun yarn into a finished fabric product by using a loom.

Preferably, in the S1, the ratio by weight of the terephthaloyl chloride, the p-phenylenediamine and the dimethylacetamide is 20% to 30%: 30% -40%: 10 to 15 percent.

Preferably, in the step S2, the terephthaloyl chloride, the p-phenylenediamine and the dimethylacetamide are mixed in a mixer and heated at 40-60 ℃ for 30-50 min.

Preferably, in the S4, the concentration of the concentrated sulfuric acid is 100%, and the mixture ratio of the polymer to the concentrated sulfuric acid is 15% -25% to 90% -100%.

Preferably, in the S5, the temperature of the spinning machine is 95 to 105 ℃.

Preferably, in the S6, the cold water temperature is 0-4 ℃, and acid is removed in a gelling bath.

Compared with the prior art, the invention provides a preparation method of aramid fiber high-temperature-resistant cloth with an easy ash removal function, and the preparation method has the following beneficial effects:

the cloth finished product obtained by the invention has the function of easy ash removal, is high temperature resistant, and can be widely used for processing fire-fighting clothes, work clothes and sports clothes.

In the processing process, the generation of a curled or folded chain can be inhibited, so that the molecular chain is further highly oriented along the axial direction to form a nearly hundred percent secondary crystal framework.

Drawings

Fig. 1 is a structural schematic diagram of the whole of the preparation method of the aramid fiber high-temperature-resistant fabric with the easy ash removal function provided by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, embodiment 1:

a preparation method of aramid fiber high-temperature-resistant cloth with an easy ash removal function comprises the following steps:

s1, preparing paraphthaloyl chloride, paraphenylenediamine and dimethylacetamide;

s2, mixing terephthaloyl chloride, p-phenylenediamine and dimethylacetamide;

s3, precipitating, washing and drying the mixed solution to obtain a polymer;

s4, putting the polymer into concentrated sulfuric acid, and stirring and fully dissolving to obtain gelatin;

s5, putting the gelatin into a spinning machine for extrusion into filaments;

s6, spinning, washing with cold water, and drying to obtain spun yarn;

and S7, processing the spun yarn into a finished fabric product by using a loom.

In the S1, the weight ratio of the paraphthaloyl chloride to the p-phenylenediamine to the dimethylacetamide is 20%: 30%: 10 percent.

In the S2, the paraphthaloyl chloride, the paraphenylenediamine and the dimethylacetamide are mixed in a stirrer and heated at 40 ℃ for 30 min.

In the S4, the concentration of concentrated sulfuric acid is 100%, and the ratio of polymer to concentrated sulfuric acid is 15% to 90%.

In the S5, the temperature of the spinning machine was 95 ℃.

In S6, the acid was removed in a gelling bath at a cold water temperature of 0 ℃.