阅读说明：本技术 一种导热面料及其制备方法 (Heat-conducting fabric and preparation method thereof ) 是由 李景川 曾国坪 王志勇 胡凯 叶介茂 赵尚振 宋辉辉 于 2020-11-27 设计创作，主要内容包括：本发明提供了一种导热面料及其制备方法,导热面料包括涤纶面纱、底纱及连接纱；底纱和连接纱均为尼龙包涤纶皮芯结构纱；所述面纱和底纱的纱线规格比为2～4:1；所述面纱和底纱的纱线根数比为4～8:1。本发明提供的面料采用涤纶细纱线作为面纱,占50％～75％,能提升水分在面层的分配比例,起到单向导湿的效果；底纱为尼龙包涤纶皮芯结构纱,尼龙表层将热更快导出,实现更好的热舒适性。实验结果表明：面料的热导率为0.092～0.103；接触凉感为0.23～0.26；20次洗后MMT为3～4。(The invention provides a heat-conducting fabric and a preparation method thereof, wherein the heat-conducting fabric comprises polyester face yarns, ground yarns and connecting yarns; the bottom yarns and the connecting yarns are nylon-coated polyester skin-core structure yarns; the yarn specification ratio of the face yarn to the bottom yarn is 2-4: 1; the yarn number ratio of the face yarns to the bottom yarns is 4-8: 1. The fabric provided by the invention adopts the polyester fine yarn as the face yarn, accounts for 50% -75%, can improve the distribution proportion of water in the surface layer, and has the effect of one-way moisture conduction; the end yarn is nylon package dacron skin core structure yarn, and the nylon top layer is derived heat faster, realizes better thermal comfort. The experimental results show that: the thermal conductivity of the fabric is 0.092-0.103; the contact cool feeling is 0.23-0.26; after 20 times of washing, the MMT is 3-4.)

1. A heat-conducting fabric is characterized by comprising polyester veil;

bottom yarn;

and a connecting yarn for connecting the face yarn and the ground yarn;

the bottom yarns and the connecting yarns are nylon-coated polyester skin-core structure yarns;

the yarn specification ratio of the face yarn to the bottom yarn is 2-4: 1;

the yarn number ratio of the face yarns to the bottom yarns is 4-8: 1.

2. The heat-conducting fabric according to claim 1, wherein the polyester face yarn has a yarn specification of 75D-150D, a yarn number of 72F-288F, a twist coefficient of 200-600, and a heat conductivity of 0.08-0.1W/(mK);

the yarn specification of the nylon-coated polyester sheath-core structure yarn is 30D-75D, the number of the yarns is 12F-48F, and the heat conductivity coefficient is greater than 0.3W/(mK).

3. The heat-conducting fabric according to claim 1, wherein the weight ratio of nylon in the nylon-coated polyester sheath-core structure yarn is 25-50%; the weight ratio of the terylene is 50-75%;

the cross section of the nylon-coated polyester sheath-core structure yarn is of a flat structure.

4. The heat-conducting fabric according to claim 1, wherein the face yarn and the connecting yarn are used as surface layers of the fabric;

the weight proportion of the surface yarn in the surface layer is 75-90%, and the weight proportion of the connecting yarn is 10-25%.

5. The heat-conducting fabric according to claim 1, wherein the face yarns are made of 150D144F polyester;

the nylon-coated polyester sheath-core structure yarn is selected from 75D24F nylon-coated polyester sheath-core structure yarn.

6. The heat-conducting fabric according to claim 1, wherein the mass ratio of the face yarns to the total mass of the ground yarns and the connecting yarns is 50-75: 25 to 50.

7. A preparation method of the heat-conducting fabric as claimed in any one of claims 1 to 6, comprising the following steps:

and weaving, dyeing and sizing the surface yarns, the bottom yarns and the connecting yarns to obtain the heat-conducting fabric.

8. The preparation method according to claim 7, wherein the dyeing temperature is 125-130 ℃, the dyeing time is 40-50 min, and the pH value is 4.8-5.2.

9. The preparation method of claim 7, wherein the shaping agent for shaping comprises the following components in a mass ratio of 0.45-0.55: 1: 18-32 of acetic acid, a penetrating agent JFC and a COOL feeling finishing agent ASTEX COOL-EX.

Technical Field

The invention belongs to the technical field of fabrics, and particularly relates to a heat-conducting fabric and a preparation method thereof.

Background

With the improvement of living standard and the development of sport specialization, people have higher and higher specialization requirements on sports clothes. The research on sports clothes mainly focuses on the wet comfort, such as a one-way wet-guiding technology. In the one-way moisture-transfer technology, one is called as printing single transfer, namely, a combination of a water-repellent point and a hydrophilic point is formed on the inner layer of the fabric in printing or spraying and other modes, so as to form the comparison of the moisture distribution of the inner layer and the outer layer, and achieve the one-way moisture-transfer effect, for example, patent CN 101845702; the mode can well realize the one-way moisture-conducting effect, but has no obvious effect on heat conduction and temperature reduction, namely, good thermal comfort is not realized.

In addition, the polyester is used as a surface layer, the polypropylene or the polyethylene is used as an inner layer, and the characteristic that the hydrophilicity of the polyester is better than that of the polypropylene or the polyethylene is utilized, so that a good one-way moisture conducting effect is realized, and meanwhile, a certain thermal comfort effect is also realized. However, since polypropylene and polyethylene are not resistant to high temperature and cannot be dyed, most of them are represented by white yarns, and the quality of the fabric is poor. In addition, the hot stamping and printing process which needs heating cannot be carried out, and only a simple design can be made, so that the use of the hot stamping and printing machine is greatly limited, and the reason why the hot stamping and printing machine cannot be used on a large scale in daily life is also reason.

Disclosure of Invention

In view of the above, the invention aims to provide a heat-conducting fabric and a preparation method thereof, and the fabric has good one-way moisture-conducting effect and thermal comfort.

The invention provides a heat-conducting fabric, which comprises polyester veil;

bottom yarn;

and a connecting yarn for connecting the face yarn and the ground yarn;

the bottom yarn and the connecting yarn are independently selected from polyester sheath-core structure yarns wrapped by nylon;

the yarn specification of the face yarn is 75D-150D, the number of the yarns is 72F-288F, the twist coefficient is 200-600, and the heat conductivity coefficient is 0.08-0.1W/(mK);

the yarn specification of the nylon-coated polyester sheath-core structure yarn is 30D-75D, the number of the yarns is 12F-48F, and the heat conductivity coefficient is greater than 0.3W/(mK).

Preferably, the yarn specification of the polyester face yarn is 75D-150D, the number of the yarns is 72F-288F, the twist coefficient is 200-600, and the heat conductivity coefficient is 0.08-0.1W/(mK);

the yarn specification of the nylon-coated polyester sheath-core structure yarn is 30D-75D, the number of the yarns is 12F-48F, and the heat conductivity coefficient is greater than 0.3W/(mK).

Preferably, the weight ratio of nylon in the nylon-coated polyester sheath-core structure yarn is 25-50%; the weight ratio of the terylene is 50-75%;

the cross section of the nylon-coated polyester sheath-core structure yarn is of a flat structure.

Preferably, the veil and the connecting yarns are used as the surface layer of the fabric;

the weight proportion of the surface yarn in the surface layer is 75-90%, and the weight proportion of the connecting yarn is 10-25%.

Preferably, the veil is selected from 150D144F terylene;

the nylon-coated polyester sheath-core structure yarn is selected from 75D24F nylon-coated polyester sheath-core structure yarn.

Preferably, the mass ratio of the face yarn to the total mass of the ground yarn and the connecting yarn is 50-75: 25 to 50.

The invention provides a preparation method of the heat-conducting fabric in the technical scheme, which comprises the following steps:

and weaving, dyeing and sizing the surface yarns, the bottom yarns and the connecting yarns to obtain the heat-conducting fabric.

Preferably, the dyeing temperature is 125-130 ℃, the dyeing time is 40-50 min, and the pH value is 4.8-5.2.

Preferably, the shaping agent adopted for shaping comprises the following components in a mass ratio of 0.45-0.55: 1: 18-32 of acetic acid, a penetrating agent JFC and a COOL feeling finishing agent ASTEX COOL-EX.

The invention provides a heat-conducting fabric, which comprises polyester veil; bottom yarn; and a connecting yarn for connecting the face yarn and the ground yarn; the bottom yarns and the connecting yarns are nylon-coated polyester skin-core structure yarns; the yarn specification ratio of the face yarn to the bottom yarn is 2-4: 1; the yarn number ratio of the face yarns to the bottom yarns is 4-8: 1. The fabric provided by the invention adopts the polyester fine yarn as the face yarn, has a large proportion, can improve the distribution proportion of water in the surface layer, and has a one-way moisture-conducting effect; the end yarn is nylon package dacron skin core structure yarn, and the nylon top layer is derived heat faster, realizes better thermal comfort. Also has better color fastness. The experimental results show that: the thermal conductivity of the fabric is 0.092-0.103; the contact cool feeling is 0.23-0.26; after 20 times of washing, the MMT is 3-4.

Drawings

Fig. 1 is a schematic structural view of a heat-conducting fabric provided by the present invention, wherein,is made of polyester face yarn,is a nylon-coated polyester sheath-core structured yarn;

fig. 2 is a schematic structural diagram of a nylon-coated polyester sheath-core structural yarn, wherein 1 is a sheath layer and 2 is a core layer.

Detailed Description

The invention provides a heat-conducting fabric, which comprises polyester veil;

bottom yarn;

and a connecting yarn for connecting the face yarn and the ground yarn;

the bottom yarn and the connecting yarn are independently selected from polyester sheath-core structure yarns wrapped by nylon;

the yarn specification ratio of the face yarn to the bottom yarn is 2-4: 1; the yarn number ratio of the face yarns to the bottom yarns is 4-8: 1.

The heat-conducting fabric provided by the invention comprises polyester veil; the yarn specification of the face yarn is preferably 75D-150D, the number of the yarns is 72F-288F, the twist coefficient is 200-600, and the heat conductivity coefficient is 0.08-0.1W/(mK).

The heat-conducting fabric provided by the invention comprises bottom yarns; the bottom yarn is selected from a nylon-coated polyester skin-core structure yarn; the yarn specification of the nylon-coated polyester sheath-core structure yarn is preferably 30D-75D, the number of the yarns is 12F-48F, and the heat conductivity coefficient is greater than 0.3W/(mK). The weight ratio of nylon in the nylon-coated polyester sheath-core structure yarn is 25-50%; the weight ratio of the terylene is 50-75%; the cross section of the nylon-coated polyester sheath-core structure yarn is of a flat structure. In a specific embodiment, the weight ratio of nylon in the nylon-coated polyester sheath-core structure yarn is 30% or 40%; the weight ratio of the terylene is 70 percent or 60 percent.

The yarn specification ratio of the face yarn to the bottom yarn is 2-4: 1; the yarn number ratio of the face yarns to the bottom yarns is 4-8: 1. In a specific embodiment, the specification ratio of the face yarns to the ground yarns is 2: 1; the yarn number ratio of the face yarns to the bottom yarns is 6: 1.

In the invention, the veil and the connecting yarns are used as the surface layer of the fabric; the weight proportion of the surface yarn in the surface layer is 75-90%, and the weight proportion of the connecting yarn is 10-25%. The polyester veil is mainly appeared on the surface layer of the fabric, absorbs sweat discharged from the bottom layer, evaporates on the surface and takes away heat.

The invention adopts the nylon-coated polyester skin-core structure yarn as the ground yarn, wherein the nylon is used as the skin layer to lead out the heat of the body surface, and the thermal comfort control effect is better than that of printing one-way moisture conduction; the core layer is made of terylene, so that the water absorption and retention property of nylon is reduced, and the quick drying performance of the yarn is improved. The problem that pure nylon is not easy to dry is solved.

The ground yarn is nylon package dacron skin core construction yarn, weaves and appears in the surface fabric the inside, pastes the skin face promptly, forms smooth line, can with skin direct contact, absorbs the heat of skin in the twinkling of an eye. The nylon-coated polyester sheath-core structured yarn can continuously keep the handfeel of polyester, overcomes the defect that nylon is too smooth, has the effect of softness and rigidity outside and more meets the requirement of sports fabrics. During dyeing, the terylene on the inner layer can be singly dyed to obtain the effect of dyeing in the same bath with the surface layer yarn without secondary dyeing. The nylon is high temperature resistant, can be used for hot-stamping and printing, avoids the problem that polypropylene and polyethylene cannot resist high temperature, and improves the application universality.

The connecting yarns connecting the two surfaces are nylon-coated polyester core-spun yarns, account for 10% -25% of the surface layer of the fabric, and are used for heat conduction and heat dissipation and heat exchange with the surface yarns.

In the specific embodiment of the invention, the veil is selected from 150D144F terylene; the nylon-coated polyester sheath-core structure yarn is selected from 75D24F nylon-coated polyester sheath-core structure yarn.

The mass ratio of the face yarns to the total mass of the ground yarns and the connecting yarns is 50-75: 25 to 50.

The invention provides a preparation method of the heat-conducting fabric in the technical scheme, which comprises the following steps:

and weaving, dyeing and sizing the surface yarns, the bottom yarns and the connecting yarns to obtain the heat-conducting fabric.

In the weaving process, the ground yarns are mainly arranged in the fabric, namely, the ground yarns are adhered to the skin surface and form flat grains, and the flat grains can be directly contacted with the skin to instantly absorb the heat of the skin; the connecting yarn part appears on the surface, directly contacts with air after heat is conducted out, and heat dissipation is facilitated. The surface yarn appears on the fabric surface layer and can absorb sweat discharged from the bottom layer, evaporate on the surface and take away heat.

In the weaving process, the upper needle arrangement mode is AAAAAA, and the lower needle arrangement mode is AABCCB; wherein A, B and C represent knitting needles of three different heel heights, respectively; A. b, C represents the sequence of the needle arrangements, called needle arrangements. The number of passes in the weaving process is the number of yarn feeding ports of the weft knitting machine, and generally does not exceed 24 passes because the size of the structure cycle is different. In the invention, 10 paths are adopted as a cycle, and 1-5 paths are fed with the polyester face yarns; 6-10 paths of nylon-coated polyester sheath-core structural yarns are fed.

In the invention, the dye solution adopted for dyeing comprises 0.2-0.3 g/l of defoaming agent, 2-3 g/l of leveling agent, 0.9-1.1 g/l of crease-resist agent, 0.45-0.55 g/l of dispersing agent, 0.4-0.5 wt% of pigment and the balance of water; the addition amount of the pigment is based on the mass of the heat-conducting fabric, and the addition amounts of the defoaming agent, the leveling agent, the anti-wrinkling agent and the dispersing agent are based on the dye solution. The antifoaming agent is preferably selected from CK-G054 of Tianjin Gaita New Material Co., Ltd; the leveling agent is preferably selected from a high-temperature leveling agent Goon308 of Dongguan Jia macro organic silicon technology limited; the anti-wrinkling agent is preferably selected from SX in bath of Sanxing advanced materials science and technology Limited company in Dongguan city; the diffusant is preferably JFC of pure Jia trade company, Inc. of Guangzhou city. The pigment is preferably selected from one or more of disperse dye red, disperse dye blue and disperse dye yellow loyalty; more preferably selected from disperse red SE-GFL and/or disperse blue 2 BLN.

In the specific embodiment, defoaming agent CK-G0540.25g/l, leveling agent Goon 3082.5 g/l, anti-wrinkling agent 1g/l, dispersing agent 0.5g/l, pigment 0.4% and balance water are contained in the dye solution for dyeing; or defoaming agent 0.25g/l, leveling agent 2.5g/l, anti-creasing agent 1g/l, dispersing agent 0.5g/l, pigment 0.5% and water in balance in the dye solution for dyeing.

In the invention, the dyeing temperature is 125-130 ℃, the dyeing time is 40-50 min, and the pH value is 4.8-5.2. In the specific embodiment, the dyeing temperature is 130 ℃, the dyeing time is 45min, and the pH value is 5.

In the invention, the setting agent adopted qualitatively comprises the following components in a mass ratio of 0.45-0.55: 1: 18-32 parts of acetic acid, a penetrating agent and a cool finishing agent; the type of the penetrant is preferably selected from JFC; the type of the COOL feeling finishing agent is preferably selected from ASTEX COOL-EX. In the invention, the setting temperature is preferably 180-190 ℃, and the vehicle speed is 14-16 m/min during setting. In the specific embodiment, the setting temperature is 185 ℃ and the vehicle speed is 15 m/min.

In order to further illustrate the present invention, the following detailed description is provided for a heat conductive fabric and a method for preparing the same, which should not be construed as limiting the scope of the present invention.

Example 1 polyester cover Chinlon polyester bird's eye cloth

The whole processing process flow is as follows: selecting materials, twisting surface yarn, weaving, dyeing, shaping, finishing and testing;

1. selecting yarns, wherein the surface layer is 150D144F terylene, the twist coefficient is 400, the bottom layer is 75D24F nylon-covered terylene yarn, and in the core-spun yarn, the nylon of the surface layer accounts for 30 percent, and the terylene of the inner layer accounts for 70 percent;

2. the fabric was woven using the weaving parameters shown in table 1:

TABLE 1 weaving parameters used in example 1

Wherein A, B, C respectively represent knitting needles with three different heel heights, and the arrangement of A, B, C represents the sequence of the knitting needle arrangement, which is called a needle arrangement; row 1 and 2 represent two different yarns, i.e., feed No. 1 from lane 1-5 and No. 2 from lane 6-10. (in this example, the yarn No. 1 is 150D144F twisted polyester, and the yarn No. 2 is 75D24F nylon-covered polyester yarn); v, inverted V and-respectively represent different knitting triangles, V represents looping, and-represents floating threads; the number of passes is the number of yarn feeders of the weft knitting machine, and generally does not exceed 24 passes because of the difference in the size of the stitch cycle. In this embodiment, 10 cycles are one cycle.

3. Dyeing: the dye solution formula comprises 0.25g/l of defoaming agent, 2.5g/l of leveling agent, 1g/l of crease-resist agent, 0.5g/l of dispersing agent, 0.4% of disperse red SE-GFL and the balance of water, the pH value is 5, the dyeing temperature is 130 ℃, and the temperature is kept for 45 min;

4. the post-setting formula comprises 0.5g/L of acetic acid, 1g/L of penetrating agent JFC and 30g/L of cooling finishing agent ASTEX COOL-EX 30g/L (Tunna chemical), the setting temperature is 185 ℃, the vehicle speed is 15m/min, and the heat-conducting fabric, namely the terylene cover and chinlon wrapped terylene bird eye fabric is obtained, the fabric mass is 110g/m²。

TABLE 2 conventional test results for polyester covered chinlon polyester bird's eye cloth fabric

Table 3 functional test results of the heat conductive fabric prepared in example 1

As can be seen in table 2: all the conventional physical and chemical indexes prepared in the embodiment 1 meet the requirements of national standards; as can be seen in table 3: the fabric prepared by the embodiment has good one-way moisture-conducting and humidity-controlling performance, instant contact cool feeling performance and continuous heat conduction and cooling performance.

Example 2 polyester cover Chinlon bag polyester check grain fabric

The whole processing process flow is as follows: material selection, weaving, dyeing and finishing, shaping, finished product and testing;

1. selecting yarns, namely a surface layer of 150D144F terylene, and a bottom layer of 75D24F terylene-wrapped terylene yarn, wherein the ratio of nylon is 40 percent, and the ratio of terylene is 60 percent;

2. the parameters of the fabric weave are shown in table 4:

table 4 weaving parameters used in example 2

The weaving of example 2 uses 10 passes as a circulation, and the No. 1, 2, 3, 4, 5 passes are fed with the No. 1 yarn (150D144F twisted terylene), and the No. 2 yarns are fed with the No. 6, 7, 8, 9, 10 passes (75D24F nylon-covered terylene yarn). The upper needle row is AAAAAA, and the lower needle row is AABCCB. Knitting the upper needle into a loop, and knitting the lower needle into a loop, a floating thread and a floating thread on the 1 st and 5 th paths; knitting the upper needle into a loop, knitting the lower needle into a loop, looping and floating on the 2 nd, 3 rd and 4 th roads; the upper needles on the 6 th, 7 th, 8 th, 9 th and 10 th paths are floating threads, and the lower needles are looped, looped and looped;

3. dyeing: the dye liquor formula adopted by dyeing comprises 0.25g/l of defoaming agent, 2.5g/l of leveling agent, 1g/l of crease-resist agent, 0.5g/l of dispersing agent, 0.5 wt% of disperse dye blue 2BLN and the balance of water, wherein the pH value is 5, the dyeing temperature is 130 ℃, and the temperature is kept for 45 min.

4. Post-setting formula: 0.5g/L of acetic acid, 1g/L of penetrating agent JFC, and 20g/L of COOL finishing agent ASTEX COOL-EX, wherein the setting temperature is 185 ℃, the vehicle speed is 15m/min, and the dacron-covered and chinlon-wrapped dacron lattice fabric is obtained, and the fabric mass is 125g/m²。

Table 5 conventional test results of dacron-covered chinlon-covered dacron lattice fabric prepared in example 2

Table 6 functionality test results of dacron-covered chinlon-covered dacron lattice fabric prepared in example 2

The test result shows that all conventional physical and chemical indexes meet the requirements of national standards; functional indication shows that the fabric has good one-way moisture-conducting and humidity-controlling performance, instant contact cool feeling performance and continuous heat conduction and cooling performance.

From the above embodiments, the invention provides a heat-conducting fabric, which comprises polyester veil; bottom yarn; and a connecting yarn for connecting the face yarn and the ground yarn; the bottom yarns and the connecting yarns are nylon-coated polyester skin-core structure yarns; the yarn specification ratio of the face yarn to the bottom yarn is 2-4: 1; the yarn number ratio of the face yarns to the bottom yarns is 4-8: 1. The fabric provided by the invention adopts the polyester fine yarn as the face yarn, has a large proportion, can improve the distribution proportion of water in the surface layer, and has a one-way moisture-conducting effect; the end yarn is nylon package dacron skin core structure yarn, and the nylon top layer is derived heat faster, realizes better thermal comfort. Also has better color fastness. The experimental results show that: the thermal conductivity of the fabric is 0.092-0.103; the contact cool feeling is 0.23-0.26; after 20 times of washing, the MMT is 3-4.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.