Comfortable knitted fabric finished by liquid ammonia and preparation method thereof

Abstract

The invention belongs to the field of garment materials, and particularly relates to a comfortable knitted fabric finished by liquid ammonia and a preparation method of the comfortable knitted fabric. The comfortable knitted fabric is prepared according to the following steps that long stapled cotton serves as knitting yarn of bottom yarn and surface yarn, Sorona yarn added with jade powder and an antibacterial agent serves as connecting yarn of the bottom yarn and the surface yarn, a double-face twill jacquard structure weaving method is adopted for weaving, and double-face twill jacquard gray cloth is obtained; and soaking the double-sided twill jacquard gray cloth in liquid ammonia, and then taking out and drying to obtain the comfortable knitted fabric finished by the liquid ammonia. According to the method, antibacterial Sorona and long stapled cotton are adopted as weaving raw materials, and the method conforms to the general trend of environmental protection; the fabric prepared by the method has stable antibacterial performance, and is glossy, more wear-resistant, more crease-resistant, more stable in size and better in wearing comfort; in addition, the twill texture jacquard weave is arranged on the surface of the prepared fabric, and the requirements of more consumer groups can be met.

Description

Technical Field

[0001] The invention belongs to the field of clothing fabrics, and in particular relates to a comfortable knitted fabric finished with liquid ammonia and a preparation method thereof. Background Art

[0002] With the rapid development of society, the comfort of clothing has received more and more attention, so functional yarns with different technologies have been derived to meet everyone's needs. As the concept of green environmental protection has been deeply rooted in people's hearts, people's environmental awareness has become stronger and stronger, and the use of environmentally friendly materials has become more and more concerned. How to make clothing and fabrics green and environmentally friendly and recyclable has long become a hot topic.

[0003] Therefore, there is an urgent need for an antibacterial knitted fabric that responds to green environmental protection and adapts to weather changes. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a comfortable knitted fabric finished with liquid ammonia and a preparation method thereof. The fabric prepared by the present invention has good antibacterial properties and comfortable effects, and the raw materials are green and environmentally friendly.

[0005] The present invention provides a method for preparing a comfortable knitted fabric finished with liquid ammonia, comprising the following steps:

[0006] Long-staple cotton is used as the weaving yarn of the base yarn and the veil, and Sorona yarn added with jade powder and antibacterial agent is used as the connecting yarn of the base yarn and the veil. The double-sided twill jacquard structure weaving method is adopted to weave the double-sided twill jacquard embryo fabric.

[0007] The double-sided twill jacquard grey fabric is soaked in liquid ammonia, then taken out and dried to obtain a comfortable knitted fabric finished with liquid ammonia.

[0008] Preferably, the long-staple cotton has a count of ≥60.

[0009] Preferably, the fineness of the Sorona yarn is ≥50D.

[0010] Preferably, the weaving is carried out on a double-sided loom with a needle gauge of 34 inches.

[0011] Preferably, during the weaving process, every three horizontal paths serve as a group of weaving systems, corresponding to the base yarn, the face yarn, and the connecting yarn in sequence. A total of 18 horizontal paths and six groups of weaving systems form a total pattern cycle, and each group of weaving systems includes 2 needle positions for weaving on the upper needle disk and 3 needle positions for weaving on the lower needle cylinder.

[0012] Preferably, during the weaving process, the specific arrangement of the 18 horizontal paths is as follows:

[0013] The first and second knitting needle positions of the upper needle disc of the first horizontal route do not participate in knitting, the first needle position of the lower needle cylinder does not participate in knitting, and the second and third knitting needle positions of the lower needle cylinder participate in knitting;

[0014] The second needle position of the upper needle disc of the second horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0015] The first needle position of the upper needle disc of the third horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the first and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the second knitting needle position of the lower needle cylinder participates in knitting;

[0016] The first and second needle positions of the upper needle disc of the fourth horizontal route do not participate in knitting, the second knitting needle position of the lower needle cylinder does not participate in knitting, and the first and third knitting needle positions of the lower needle cylinder participate in knitting;

[0017] The first needle position of the upper needle disc of the fifth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0018] The second needle position of the upper needle disc of the sixth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, the first and second knitting needle positions of the lower needle cylinder do not participate in knitting, and the third knitting needle position of the lower needle cylinder participates in knitting;

[0019] The first and second needle positions of the upper needle plate of the seventh horizontal route do not participate in knitting, the third knitting needle position of the lower needle cylinder does not participate in knitting, and the first and second knitting needle positions of the lower needle cylinder participate in knitting;

[0020] The second needle position of the upper needle disc of the eighth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0021] The first needle position of the upper needle disc of the ninth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the second and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the first knitting needle position of the lower needle cylinder participates in knitting;

[0022] The first and second needle positions of the upper needle plate of the tenth horizontal route do not participate in knitting, the first knitting needle position of the lower needle cylinder does not participate in knitting, and the second and third knitting needle positions of the lower needle cylinder participate in knitting;

[0023] The first needle position of the upper needle disc of the eleventh horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0024] The second needle position of the upper needle disc of the twelfth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, the first and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the second knitting needle position of the lower needle cylinder participates in knitting;

[0025] The first and second needle positions of the upper needle plate of the thirteenth horizontal route do not participate in knitting, the second knitting needle position of the lower needle cylinder does not participate in knitting, and the first and third knitting needle positions of the lower needle cylinder participate in knitting;

[0026] The second needle position of the upper needle disc of the fourteenth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0027] The first needle position of the upper needle disc of the fifteenth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the first and second knitting needle positions of the lower needle cylinder do not participate in knitting, and the third knitting needle position of the lower needle cylinder participates in knitting;

[0028] The first and second needle positions of the upper needle plate of the sixteenth horizontal route do not participate in knitting, the third knitting needle position of the lower needle cylinder does not participate in knitting, and the first and second knitting needle positions of the lower needle cylinder participate in knitting;

[0029] The first needle position of the upper needle disc of the seventeenth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0030] The second needle position of the upper needle dial on the eighteenth horizontal route does not participate in knitting, the first knitting needle position of the upper needle dial participates in knitting, the second and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the first knitting needle position of the lower needle cylinder participates in knitting.

[0031] Preferably, the temperature of the liquid ammonia is -33 to -35°C.

[0032] Preferably, the immersion pressure is normal pressure, and the immersion time is 5 to 20 seconds.

[0033] Preferably, the drying method is sealed drying.

[0034] The invention provides a comfortable knitted fabric finished with liquid ammonia, which is prepared according to the preparation method described in the above technical scheme.

[0035] Compared with the prior art, the present invention provides a comfortable knitted fabric finished with liquid ammonia and a preparation method thereof. The comfortable knitted fabric provided by the present invention is prepared according to the following steps: long-staple cotton is used as the knitting yarn of the base yarn and the veil, and Sorona yarn added with jade powder and antibacterial agent is used as the connecting yarn of the base yarn and the veil, and a double-sided twill jacquard structure weaving method is used for weaving to obtain a double-sided twill jacquard grey cloth; the double-sided twill jacquard grey cloth is soaked in liquid ammonia, and then taken out and dried to obtain a comfortable knitted fabric finished with liquid ammonia. The method provided by the present invention uses antibacterial Sorona and long-staple cotton as weaving raw materials, which conforms to the general trend of green environmental protection; the fabric prepared by the method has stable antibacterial properties, and is also more shiny, more wear-resistant, more wrinkle-resistant, more stable in size, and more comfortable; in addition, the surface of the prepared fabric has a twill texture jacquard, which can meet the needs of more consumer groups. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1 It is an angular diagram of the double-sided twill jacquard structure weaving method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention provides a method for preparing a comfortable knitted fabric finished with liquid ammonia, comprising the following steps:

[0040] Long-staple cotton is used as the weaving yarn of the base yarn and the veil, and Sorona yarn added with jade powder and antibacterial agent is used as the connecting yarn of the base yarn and the veil. The double-sided twill jacquard structure weaving method is adopted to weave the double-sided twill jacquard embryo fabric.

[0041] The double-sided twill jacquard grey fabric is soaked in liquid ammonia, then taken out and dried to obtain a comfortable knitted fabric finished with liquid ammonia.

[0042] In the preparation method provided by the present invention, the fabric woven with long-staple cotton as the base yarn and the surface yarn material retains the touch of natural cotton fiber, making the fabric have good skin-friendliness. In the present invention, the grade of the long-staple cotton is preferably above 137; the count of the long-staple cotton is preferably ≥ 60 counts (60S).

[0043] In the preparation method provided by the present invention, the Sorona yarn is a polymer fiber material made of bio-based PDO (1,3-propylene glycol) and PTA (terephthalic acid) as the main raw materials. The molecular structure of the material has a unique "small spring" structure, which can make the fabric have lasting and comfortable elasticity and resilience, and be straight and not deformed. In the present invention, jade powder and antibacterial agent are added in the preparation of the Sorona yarn, thereby increasing the cool antibacterial properties of the Sorona yarn; wherein the particle size of the jade powder is preferably 300-500nm; the antibacterial agent is preferably Zn 2+The mass ratio of the jade powder to the antibacterial agent is preferably 1:(0.5-2), more preferably 1:1; the total amount of the jade powder and the antibacterial agent added is preferably 5-10 g / kg yarn, specifically 8 g / kg yarn. In the present invention, the fineness of the Sorona yarn is preferably ≥50D.

[0044] In the preparation method provided by the present invention, by using long-staple cotton and Sorona yarn together, the woven fabric can be made compact, super elastic, soft and shiny. In addition, since cotton and polyester have different shrinkage ratios after high temperature, the twill of the fabric prepared by the present invention can be finer and more obvious.

[0045] In the preparation method provided by the present invention, the weaving is preferably carried out on a 34-inch needle gauge double-sided loom; in the weaving process, preferably every 3 horizontal paths are used as a group of weaving systems, corresponding to the bottom yarn, the face yarn, and the connecting yarn in sequence, preferably a total of 18 horizontal paths and six groups of weaving systems are a total pattern cycle, and each group of weaving systems preferably includes 2 needle positions of the upper needle disk and 3 needle positions of the lower needle cylinder. In the present invention,

[0046] In the preparation method provided by the present invention, during the weaving process, the 18 horizontal paths can be arranged as follows Figure 1 The specific instructions are as follows:

[0047] The first and second knitting needle positions of the upper needle disc of the first horizontal route do not participate in knitting, the first needle position of the lower needle cylinder does not participate in knitting, and the second and third knitting needle positions of the lower needle cylinder participate in knitting;

[0048] The second needle position of the upper needle disc of the second horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0049] The first needle position of the upper needle disc of the third horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the first and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the second knitting needle position of the lower needle cylinder participates in knitting;

[0050] The first and second needle positions of the upper needle disc of the fourth horizontal route do not participate in knitting, the second knitting needle position of the lower needle cylinder does not participate in knitting, and the first and third knitting needle positions of the lower needle cylinder participate in knitting;

[0051] The first needle position of the upper needle disc of the fifth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0052] The second needle position of the upper needle disc of the sixth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, the first and second knitting needle positions of the lower needle cylinder do not participate in knitting, and the third knitting needle position of the lower needle cylinder participates in knitting;

[0053] The first and second needle positions of the upper needle plate of the seventh horizontal route do not participate in knitting, the third knitting needle position of the lower needle cylinder does not participate in knitting, and the first and second knitting needle positions of the lower needle cylinder participate in knitting;

[0054] The second needle position of the upper needle disc of the eighth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0055] The first needle position of the upper needle disc of the ninth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the second and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the first knitting needle position of the lower needle cylinder participates in knitting;

[0056] The first and second needle positions of the upper needle plate of the tenth horizontal route do not participate in knitting, the first knitting needle position of the lower needle cylinder does not participate in knitting, and the second and third knitting needle positions of the lower needle cylinder participate in knitting;

[0057] The first needle position of the upper needle disc of the eleventh horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0058] The second needle position of the upper needle disc of the twelfth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, the first and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the second knitting needle position of the lower needle cylinder participates in knitting;

[0059] The first and second needle positions of the upper needle plate of the thirteenth horizontal route do not participate in knitting, the second knitting needle position of the lower needle cylinder does not participate in knitting, and the first and third knitting needle positions of the lower needle cylinder participate in knitting;

[0060] The second needle position of the upper needle disc of the fourteenth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0061] The first needle position of the upper needle disc of the fifteenth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the first and second knitting needle positions of the lower needle cylinder do not participate in knitting, and the third knitting needle position of the lower needle cylinder participates in knitting;

[0062] The first and second needle positions of the upper needle plate of the sixteenth horizontal route do not participate in knitting, the third knitting needle position of the lower needle cylinder does not participate in knitting, and the first and second knitting needle positions of the lower needle cylinder participate in knitting;

[0063] The first needle position of the upper needle disc of the seventeenth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting;

[0064] The second needle position of the upper needle dial on the eighteenth horizontal route does not participate in knitting, the first knitting needle position of the upper needle dial participates in knitting, the second and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the first knitting needle position of the lower needle cylinder participates in knitting.

[0065] In the preparation method provided by the present invention, the woven grey cloth is tight and bony without losing elasticity, and the two sides of the grey cloth present different twill texture jacquards, the front side pattern presents a left oblique texture, and the back side pattern presents a right oblique texture.

[0066] In the preparation method provided by the present invention, the grey cloth is preferably washed before being soaked in liquid ammonia to fully remove impurities on the grey cloth, such as oil, wax, cottonseed hull, natural pigment, etc. After washing, it is dried and cooled.

[0067] In the preparation method provided by the present invention, during the process of soaking in liquid ammonia, ammonia molecules can instantly penetrate into the interior of the fiber, so that the hydrogen bonds within and between the fiber molecular bundles are broken up; subsequently, when the ammonia molecules are removed, the fiber macromolecules are reconnected and rearranged by hydrogen bonds, so that the fiber surface changes, the internal stress of some fibers is reduced, the natural twist of the fibers is weakened, the cross-section is more elliptical, the surface contact area is increased, the mirror reflectivity of light and the toughness of the fibers are increased, and residual impurities on the fibers can be further removed, thereby improving the overall quality appearance of the fabric. In addition, the hand feel and comfort of the fabric can be further improved after soaking in liquid ammonia.

[0068] In the preparation method provided by the present invention, during the liquid ammonia soaking process, the temperature of the liquid ammonia is preferably -33 to -35°C, specifically -33°C, -34°C or -35°C; the soaking pressure is preferably at normal pressure; the soaking time is preferably 5 to 20s, specifically 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s, 16s, 17s, 18s, 19s or 20s. In the present invention, the diffusion rate of ammonia molecules during the soaking process can be regulated by adjusting the conditions of the liquid ammonia soaking, thereby achieving fine control of the ammonia soaking treatment effect of the fabric.

[0069] In the preparation method provided by the present invention, after the liquid ammonia soaking is completed, the deamination and deodorization of the fabric is achieved by the drying; wherein the drying method is preferably sealed drying; the drying temperature is preferably 100-150°C, specifically 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, 145°C or 150°C; the drying time is preferably 1-5min, specifically 1min, 1.5min, 2min, 2.5min, 3min, 3.5min, 4min, 4.5min or 5min.

[0070] The present invention also provides a comfortable knitted fabric treated with liquid ammonia, which is prepared according to the preparation method described in the above technical scheme. In the present invention, the weight of the comfortable knitted fabric is preferably 150-250 g / m 2 , specifically 150g / m 2, 155g / m 2 , 160g / m 2 , 165g / m 2 , 170g / m 2 , 175g / m 2 , 180g / m 2 , 185g / m 2 , 190g / m 2 , 195g / m 2 , 200g / m 2 , 205g / m 2 , 210g / m 2 , 215g / m 2 , 220g / m 2 , 225g / m 2 , 230g / m 2 , 235g / m 2 , 240g / m 2 , 245g / m 2 or 250g / m 2 .

[0071] The technical solution provided by the present invention uses antibacterial Sorona and long-staple cotton as weaving materials, which conforms to the general trend of green environmental protection; the fabric prepared by the technical solution has stable cool antibacterial properties, and is more shiny, more wear-resistant, more wrinkle-resistant, more dimensionally stable, and more comfortable; in addition, the surface of the fabric has a twill texture jacquard, which can meet the needs of more consumer groups. More specifically, the technical solution of the present invention has the following key points and advantages:

[0072] (1) Selection and combination of raw materials: long-staple cotton is used as the weaving yarn for the base yarn and the veil, and Sorona yarn added with jade powder and antibacterial agent is used as the connecting yarn for the base yarn and the veil; the use of long-staple cotton can keep the natural cotton fiber touch of the fabric; Sorona yarn is made of bio-based PDO (1,3-propylene glycol) and PTA (terephthalic acid) as the main raw materials, which is green and environmentally friendly. The unique "small spring" structure in its molecular structure can make the fabric have long-lasting and comfortable elasticity and recovery, and it is straight and does not deform; the addition of jade powder and antibacterial agent in Sorona yarn increases the cool and antibacterial properties of the fabric.

[0073] (2) Twill weave jacquard design: The two sides of the fabric can present different twill texture jacquards, the front side pattern presents a left-diagonal texture, and the back side pattern presents a right-diagonal texture. The textures on both sides are delicate and have their own characteristics, giving customers a variety of choices for clothing surfaces.

[0074] (3) Liquid ammonia immersion treatment: During the liquid ammonia immersion process, ammonia molecules can instantly penetrate into the fiber, breaking up the hydrogen bonds within and between fiber molecular bundles; then when the ammonia molecules are removed, the fiber macromolecules are reconnected and rearranged by hydrogen bonds, causing changes in the fiber surface, reducing the internal stress of some fibers, weakening the natural twist of the fibers, making the cross-section more elliptical, increasing the surface contact area, improving the dyeing performance, increasing the mirror reflectivity of light and the toughness of the fiber, and further removing residual impurities on the fiber, improving the overall quality and appearance of the fabric. In addition, the hand feel and comfort of the fabric can be further improved after being soaked in liquid ammonia.

[0075] For the purpose of greater clarity, the invention is described in detail through the following embodiments.

[0076] Example 1

[0077] (1) Fabric preparation:

[0078] 60S long-staple cotton yarn and 50D cool antibacterial Sorona yarn are prepared; the cool antibacterial Sorona yarn is made of bio-based PDO (1,3-propylene glycol) and PTA (terephthalic acid) as main raw materials, and a composite powder of jade and antibacterial components is added; the antibacterial component in the composite powder is Zn + The mass ratio of jade to antibacterial ingredients in the composite powder is 1:1, the particle size of the composite powder is 300-500nm, and the amount of composite powder added to one kilogram of yarn is 8g;

[0079] 60S long-staple cotton is used as the knitting yarn of the base yarn and the veil, 50D cool antibacterial Sorona yarn is used as the connecting yarn of the base yarn and the veil, and a double-sided twill jacquard structure weaving method is adopted to weave a double-sided twill jacquard grey cloth; wherein, the weaving is carried out on a 34-inch needle gauge double-sided loom, and during the weaving process, every 3 horizontal paths are used as a group of weaving systems, corresponding to the base yarn, the veil, and the connecting yarn in turn, a total of 18 horizontal paths and six groups of weaving systems are a total pattern cycle, each group of weaving systems includes 2 needle positions of the upper needle disk and 3 needle positions of the lower needle cylinder, and the specific settings of the 18 horizontal paths are as follows Figure 1 As shown;

[0080] After obtaining the above-mentioned double-sided twill jacquard grey fabric, wash it clean, dry and cool it; then soak it in liquid ammonia at -33°C, where the soaking pressure is normal pressure and the soaking time is 10s; after the soaking is completed, take it out, seal and dry it to obtain a gram weight of 210g / m 2 Comfortable knitted fabric.

[0081] (2) Fabric testing:

[0082] The antibacterial test and the cool feeling test were performed on the comfortable knitted fabric prepared above, and the results are shown in the following table:

[0083]

[0084]

[0085] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for preparing a comfortable knitted fabric finished with liquid ammonia, characterized in that: The following steps are involved: Long-staple cotton is used as the weaving yarn of the base yarn and the veil, and Sorona yarn added with jade powder and antibacterial agent is used as the connecting yarn of the base yarn and the veil. The double-sided twill jacquard structure weaving method is adopted to weave the double-sided twill jacquard embryo fabric. The double-sided twill jacquard grey fabric is soaked in liquid ammonia, then taken out and dried to obtain a comfortable knitted fabric finished with liquid ammonia.

2. The preparation method according to claim 1, characterized in that: The long-staple cotton has a count of ≥60.

3. The preparation method according to claim 1, characterized in that: The fineness of the Sorona yarn is ≥50D.

4. The preparation method according to claim 1, characterized in that: The weaving was carried out on a double-sided loom with a needle gauge of 34 inches.

5. The preparation method according to claim 4, characterized in that: During the weaving process, every three horizontal paths are regarded as a group of weaving systems, corresponding to the bottom yarn, the face yarn and the connecting yarn in sequence. A total of 18 horizontal paths and six groups of weaving systems constitute a total pattern cycle. Each group of weaving systems includes two needle positions for weaving on the upper needle disk and three needle positions for weaving on the lower needle cylinder.

6. The preparation method according to claim 5, characterized in that: During the weaving process, the specific settings of the 18 horizontal paths are as follows: The first and second knitting needle positions of the upper needle disc of the first horizontal route do not participate in knitting, the first needle position of the lower needle cylinder does not participate in knitting, and the second and third knitting needle positions of the lower needle cylinder participate in knitting; The second needle position of the upper needle disc of the second horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting; The first needle position of the upper needle disc of the third horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the first and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the second knitting needle position of the lower needle cylinder participates in knitting; The first and second needle positions of the upper needle disc of the fourth horizontal route do not participate in knitting, the second knitting needle position of the lower needle cylinder does not participate in knitting, and the first and third knitting needle positions of the lower needle cylinder participate in knitting; The first needle position of the upper needle disc of the fifth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting; The second needle position of the upper needle disc of the sixth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, the first and second knitting needle positions of the lower needle cylinder do not participate in knitting, and the third knitting needle position of the lower needle cylinder participates in knitting; The first and second needle positions of the upper needle plate of the seventh horizontal route do not participate in knitting, the third knitting needle position of the lower needle cylinder does not participate in knitting, and the first and second knitting needle positions of the lower needle cylinder participate in knitting; The second needle position of the upper needle disc of the eighth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting; The first needle position of the upper needle disc of the ninth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the second and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the first knitting needle position of the lower needle cylinder participates in knitting; The first and second needle positions of the upper needle plate of the tenth horizontal route do not participate in knitting, the first knitting needle position of the lower needle cylinder does not participate in knitting, and the second and third knitting needle positions of the lower needle cylinder participate in knitting; The first needle position of the upper needle disc of the eleventh horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting; The second needle position of the upper needle disc of the twelfth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, the first and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the second knitting needle position of the lower needle cylinder participates in knitting; The first and second needle positions of the upper needle plate of the thirteenth horizontal route do not participate in knitting, the second knitting needle position of the lower needle cylinder does not participate in knitting, and the first and third knitting needle positions of the lower needle cylinder participate in knitting; The second needle position of the upper needle disc of the fourteenth horizontal route does not participate in knitting, the first knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting; The first needle position of the upper needle disc of the fifteenth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, the first and second knitting needle positions of the lower needle cylinder do not participate in knitting, and the third knitting needle position of the lower needle cylinder participates in knitting; The first and second needle positions of the upper needle plate of the sixteenth horizontal route do not participate in knitting, the third knitting needle position of the lower needle cylinder does not participate in knitting, and the first and second knitting needle positions of the lower needle cylinder participate in knitting; The first needle position of the upper needle disc of the seventeenth horizontal route does not participate in knitting, the second knitting needle position of the upper needle disc participates in knitting, and the first, second and third knitting needle positions of the lower needle cylinder do not participate in knitting; The second needle position of the upper needle dial on the eighteenth horizontal route does not participate in knitting, the first knitting needle position of the upper needle dial participates in knitting, the second and third knitting needle positions of the lower needle cylinder do not participate in knitting, and the first knitting needle position of the lower needle cylinder participates in knitting.

7. The preparation method according to claim 1, characterized in that: The temperature of the liquid ammonia is -33 to -35°C.

8. The preparation method according to claim 7, characterized in that: The immersion pressure is normal pressure, and the immersion time is 5 to 20 seconds.

9. The preparation method according to claim 1, characterized in that: The drying method is sealed drying.

10. A comfortable knitted fabric finished with liquid ammonia, characterized in that: Prepared according to the preparation method according to any one of claims 1 to 9.

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