阅读说明：本技术 温度调节尼龙纤维 (Temperature-regulating nylon fiber ) 是由 魏麒书 林岩锡 于 2020-06-09 设计创作，主要内容包括：本发明涉及一种温度调节尼龙纤维,包括纤维本体以及相变化组成物。相变化组成物掺杂于纤维本体中,且包括450重量份至550重量份的聚四氢呋喃衍生物以及5重量份至20重量份的琥珀酸酐衍生物。以100重量份的温度调节尼龙纤维计,相变化组成物的含量介于6重量份至12重量份间。本揭露的温度调节尼龙纤维具有良好的温度调节性能,从而使得以其所制成的温度调节织物具有良好的保暖效果。(The invention relates to a temperature-adjustable nylon fiber, which comprises a fiber body and a phase change composition. The phase change composition is doped in the fiber body and comprises 450 to 550 parts by weight of polytetrahydrofuran derivative and 5 to 20 parts by weight of succinic anhydride derivative. The phase change composition is contained in an amount of 6 to 12 parts by weight based on 100 parts by weight of the temperature-adjusted nylon fiber. The temperature-adjusting nylon fiber disclosed by the invention has good temperature-adjusting performance, so that the temperature-adjusting fabric made of the temperature-adjusting nylon fiber has a good warm-keeping effect.)

1. A temperature-regulating nylon fiber, comprising:

a fiber body; and

a phase change composition doped in the fiber body, the phase change composition comprising:

450 to 550 parts by weight of a polytetrahydrofuran derivative; and

5 to 20 parts by weight of a succinic anhydride derivative,

wherein the phase change composition is contained in an amount of 6 to 12 parts by weight based on 100 parts by weight of the temperature-adjusted nylon fiber.

2. The temperature-regulated nylon fiber according to claim 1, wherein the phase change temperature of the phase change composition is between 21 ℃ and 29 ℃.

3. The temperature-regulated nylon fiber of claim 1, wherein the phase change composition has a latent heat value of between 60 joules/gram and 95 joules/gram.

4. The temperature-regulated nylon fiber of claim 1, wherein the phase change composition has an initial thermal cracking temperature of 260 ℃ to 330 ℃ and a maximum thermal cracking temperature of 350 ℃ to 410 ℃.

5. The temperature-regulated nylon fiber of claim 1, wherein the weight average molecular weight of the polytetrahydrofuran derivative is between 1800g/mole and 3200 g/mole.

6. The temperature-regulated nylon fiber according to claim 1, wherein the weight average molecular weight of the phase change composition is 20000g/mole to 30000 g/mole.

7. The temperature-regulated nylon fiber according to claim 1, wherein the phase change composition comprises 9 to 20 parts by weight of a maleic anhydride derivative.

8. The temperature-regulated nylon fiber of claim 7, wherein the phase change composition comprises:

0.25 to 0.99 molar parts of a first structural unit represented by the formula (1),

and

0.01 to 0.75 molar parts of a second structural unit represented by the formula (2),

wherein n is a positive integer from 25 to 48.

9. The temperature-regulated nylon fiber according to claim 1, wherein the phase change composition comprises 10 to 25 parts by weight of a straight-chain fatty acid derivative.

10. The temperature-regulated nylon fiber of claim 9, wherein the phase change composition comprises:

0.40 to 0.80 molar parts of a first structural unit represented by the formula (1),

0.01 to 0.40 molar parts of a second structural unit represented by the formula (2),

and

0.18 to 0.22 molar parts of a third structural unit represented by the formula (3),

wherein n is a positive integer from 25 to 48.

Technical Field

The present disclosure relates to Nylon fibers, and more particularly to Nylon fibers having temperature regulating properties.

Background

In recent years, global warming has caused extreme climate change, and the climate of extremely cold and extremely hot has also changed the type of the clothes, so that the traditional clothes introduce the technology to enhance the function of keeping warm. Phase change materials are substances that undergo a phase transition within a specific temperature range, and often undergo a phase transition with the absorption or release of a large amount of latent heat (latent heat). Phase change materials are most characterized by the ability to maintain the temperature of the environment within a certain range while absorbing or releasing a large amount of latent heat. Therefore, phase change materials are often used in the field of thermal fabrics. However, overcoming the limitations of integrating phase change materials into fabrics remains an important issue for the textile industry to actively research.

Disclosure of Invention

The disclosure provides a temperature-adjusting nylon fiber, which can be applied to a fabric, so that the fabric has a good warm-keeping effect.

According to one embodiment of the present disclosure, a temperature-adjustable nylon fiber includes a fiber body and a phase change composition. The phase change composition is doped in the fiber body and comprises 450 to 550 parts by weight of polytetrahydrofuran derivative and 5 to 20 parts by weight of succinic anhydride derivative. The phase change composition is contained in an amount of 6 to 12 parts by weight based on 100 parts by weight of the temperature-adjusted nylon fiber.

In one embodiment of the present disclosure, the phase change temperature of the phase change composition is between 21 ℃ and 29 ℃.

In one embodiment of the present disclosure, the latent heat value of the phase change composition is between 60J/g and 95J/g.

In one embodiment of the present disclosure, the phase change composition has an initial cracking temperature of 260 ℃ to 330 ℃ and a maximum cracking temperature of 350 ℃ to 410 ℃.

In one embodiment of the present disclosure, the weight average molecular weight of the polytetrahydrofuran derivative is between 1800g/mole and 3200 g/mole.

In one embodiment of the present disclosure, the weight average molecular weight of the phase change composition is 20000g/mole to 30000 g/mole.

In one embodiment of the present disclosure, the phase change composition includes 9 to 20 parts by weight of a maleic anhydride derivative.

In one embodiment of the present disclosure, the phase change composition includes 0.25 molar parts to 0.99 molar parts of the first structural unit and 0.01 molar parts to 0.75 molar parts of the second structural unit. The first structural unit is shown as a formula (1),and second isThe structural unit is shown as a formula (2),wherein n is a positive integer from 25 to 48.

In one embodiment of the present disclosure, the phase change composition includes 10 to 25 parts by weight of a linear fatty acid derivative.

In one embodiment of the present disclosure, the phase change composition includes 0.40 mol parts to 0.80 mol parts of the first structural unit, 0.01 mol parts to 0.40 mol parts of the second structural unit, and 0.18 mol parts to 0.22 mol parts of the third structural unit. The first structural unit is shown as a formula (1),the second structural unit is shown as a formula (2),and the third structural unit is shown as a formula (3),wherein n is a positive integer from 25 to 48.

According to the above embodiments of the present disclosure, since the temperature-adjustable nylon fiber of the present disclosure includes a fiber body and a proper amount of phase change composition doped in the fiber body, and the phase change composition includes a proper amount of polytetrahydrofuran derivative and succinic anhydride derivative, the temperature-adjustable nylon fiber of the present disclosure has a good temperature adjustment performance, and thus can be applied to the related field of wearable thermal fabrics.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a thorough understanding of the present disclosure. It should be understood, however, that these implementation details are not to be interpreted as limiting the disclosure. That is, in some embodiments of the disclosure, these implementation details are not necessary, and thus should not be used to limit the disclosure.

Herein, the structure of a polymer or group is sometimes represented by a bond line type (skeletton formula). This notation may omit carbon atoms, hydrogen atoms, and carbon-hydrogen bonds. Of course, the drawing is to be understood as referring to the atoms or atom groups explicitly depicted in the structural formula.

The disclosure provides a temperature-adjustable nylon fiber, which comprises a fiber body and a phase change composition doped in the fiber body. Because the phase change composition is properly doped in the fiber body and also comprises a proper amount of the polytetrahydrofuran derivative and the succinic anhydride derivative, the temperature regulation nylon fiber disclosed by the invention has good temperature regulation performance, so that the temperature regulation fabric prepared by the temperature regulation nylon fiber has good warm-keeping effect.

The temperature-adjustable nylon fiber comprises a fiber body and a phase change composition. The base material of the fiber body is nylon. The phase change composition is doped in the fiber body in a proper amount to provide good temperature regulation performance of the temperature regulation nylon fiber. Specifically, the phase change composition is contained in an amount of 6 to 12 parts by weight based on 100 parts by weight of the temperature-adjusted nylon fiber. In addition, the phase change composition includes 450 to 550 parts by weight of the polytetrahydrofuran derivative and 5 to 20 parts by weight of the succinic anhydride derivative, thereby having good latent heat and phase change temperature.

In some embodiments, the weight average molecular weight of the phase change composition may be 20000g/mole to 30000g/mole, which provides good compatibility with the fiber bulk, thereby providing good fiber morphology of the temperature-regulated nylon fiber. In addition, the phase change composition having the weight average molecular weight can have good heat resistance, thereby preventing thermal cracking and flash combustion during melt spinning, and ensuring safety and stability of the process. Further, the phase change composition having the weight average molecular weight described above may have a phase transition between a solid and an elastomer (colloid), and thus it may be directly doped in a fiber body to make a single-component temperature-adjustable nylon fiber. In detail, the phase transition of the conventional phase change material usually occurs between solid and liquid, and in consideration of the liquid leakage problem, the phase change material is often required to be encapsulated in the microcapsule so as to be disposed in the fiber body, or is often required to be made into a bicomponent fiber (e.g., core-sheath fiber) so as to overcome the liquid leakage problem. Therefore, compared with the conventional phase change material, the phase change composition disclosed by the invention has the advantages that the phase transition occurs between the solid and the elastomer (colloid), so that the temperature-regulating nylon fiber can be prepared into a single-component temperature-regulating nylon fiber, the preparation process of the temperature-regulating nylon fiber is simplified, and the wearing lightness and comfort of a user are improved. In addition, since the phase transition of the phase change composition of the present disclosure occurs between a solid and an elastomer (colloid), the surface of the fiber body is prevented from being greasy due to melt migration during the melt spinning process, thereby improving the convenience of the post-finishing process (e.g., improving the dyeability of the fiber).

The phase change composition includes 450 to 550 parts by weight of a polytetrahydrofuran derivative and 5 to 20 parts by weight of a succinic anhydride derivative. Specifically, the phase change composition may include a first structural unit represented by formula (1),wherein n is a positive integer from 25 to 48. The polytetrahydrofuran derivative has a straight chain structure, so that the phase change composition formed by the polytetrahydrofuran derivative has a straight chain structure, the acting force between high polymers can be increased, and the latent heat during phase change is increased. In some embodiments, the weight average molecular weight of the polytetrahydrofuran derivative may be between 1800g/mole and 3200g/mole, so as to provide good reactivity of the reaction precursor (e.g. polytetrahydrofuran), and thus the phase change composition formed by the method has the appropriate weight average molecular weight.

In some embodiments, the phase change composition may further include 9 to 20 parts by weight of a maleic anhydride derivative. Specifically, the phase change composition may include 0.25 to 0.99 molar parts of a first structural unit and 0.01 to 0.75 molar parts of a second structural unit, wherein the first structural unit is represented by formula (1),the second structural unit is shown as a formula (2),and n is a positive integer from 25 to 48. In this regard, the phase change composition having the maleic anhydride derivative can provide good temperature adjustment performance, and can have various advantages as described above.

In some embodiments, the phase change composition may further include 10 to 25 parts by weight of a linear fatty acid derivative. Specifically, the phase change composition may include 0.40 to 0.80 mole parts of a first structural unit, 0.01 to 0.40 mole parts of a second structural unit, and 0.18 to 0.22 mole parts of a third structural unit, wherein the first structural unit is represented by formula (1),the second structural unit is shown as a formula (2),the third structural unit is shown as a formula (3),and n is a positive integer from 25 to 48. Since the linear fatty acid derivative has a linear structure, the phase change composition formed from the derivative can have a linear structure, thereby increasing the latent heat during phase change. Phase change compositions with straight chain fatty acid derivatives may provide good temperature regulation properties and may have various advantages as described above.

In some embodiments, polytetrahydrofuran, succinic anhydride, maleic anhydride and/or straight chain fatty acid derivatives may be mixed in the above proportions in an appropriate amount of toluene to perform an esterification reaction, thereby obtaining the phase change composition. In some embodiments, the amount of succinic anhydride added is adjusted to be greater than the amount of maleic anhydride added to ensure that the phase change composition has a linear structure, thereby increasing the latent heat during phase change. In some embodiments, the reaction may be driven to proceed rapidly and completely by the addition of protic acids and azeotropic reflux.

In some embodiments, the phase change temperature of the phase change composition can be between 21 ℃ and 29 ℃, so as to provide a suitable phase change temperature for the temperature-adjustable nylon fiber, so as to be applied to wearable thermal fabrics and other products and meet the wearing requirements of users. Specifically, in some embodiments, the phase change temperature of the temperature-regulated nylon fiber may be between 27 ℃ and 29 ℃. In some embodiments, the latent heat value of the phase change composition may be between 60 joule/g and 95 joule/g, so that the phase change composition may have a property of absorbing a certain amount of heat energy during the phase transition process, so as to achieve a good temperature buffering effect, thereby providing the temperature-adjustable nylon fiber with good temperature adjustment performance. Specifically, in some embodiments, the enthalpy value (latent heat value) of the temperature-adjusted nylon fiber may be between 3 joules/gram and 8 joules/gram in the phase change temperature range of the phase change composition.

In some embodiments, the phase change composition may have an initial thermal cracking temperature of 260 ℃ to 330 ℃ and a maximum thermal cracking temperature of 350 ℃ to 410 ℃. The phase change composition with the thermal cracking temperature has good heat resistance, thereby avoiding thermal cracking and flash combustion in the melt spinning process and ensuring the safety and stability of the process. In some embodiments, the viscosity of the phase change composition at 56 ℃ can be between 14000cP and 15000cP, so that the phase change composition has good spinnability to prepare the temperature-regulated nylon fiber with high yield.

In the following description, various examples and comparative examples of the present disclosure are listed to perform various analyses to verify the efficacy of the present disclosure. Examples 1 to 5 are phase change compositions according to the present disclosure, while examples 6 to 9 are temperature-regulated nylon fibers according to the present disclosure. In detail, the temperature-adjusted nylon fibers of examples 6 to 9 were prepared by doping the phase change composition of example 4 in different amounts in the bulk of the fiber. In addition, comparative example 1 is a commercially available phase change material, and comparative example 2 is a commercially available polyester fiber. The ingredients and contents of the examples and comparative examples are shown in table one.

Watch 1

Note 1: the unit of each component content is weight portion

Note 2: the temperature-regulated nylon fibers of examples 6 to 9 were long fibers of a single component

Note 3: the polyester fiber of comparative example 2 was a bicomponent core-sheath staple fiber in which the phase change material was in the core layer and was n-octadecane

< experimental example 1: analysis of thermal Properties of phase Change compositions >

In this experimental example, the phase change compositions of examples 1 to 5 and the phase change material of comparative example 1 were measured for the main phase change temperature and the enthalpy value (latent heat value) by Differential Scanning Calorimetry (DSC), and the phase change compositions of examples 1 to 5 and the phase change material of comparative example 1 were measured for the thermal cracking temperature by Thermal Gravimetric Analysis (TGA). The measurement results are shown in table two.

Watch two

As shown in table two, the phase change compositions of examples 1 to 5 have suitable phase change temperature and a certain enthalpy value (latent heat value) to meet the wearing requirements of users and have good temperature buffering effect. In addition, compared to the phase change material of comparative example 1, the phase change compositions of examples 1 to 5 have significantly higher initial thermal cracking temperature and maximum thermal cracking temperature, which indicates better thermal resistance, so as to prevent thermal cracking and flash combustion during melt spinning, ensure safety and stability of the process, and improve the yield of the temperature-adjusted nylon fiber.

< experimental example 2: analysis of thermal Properties of fibers >

In this experimental example, the temperature-adjusted nylon fibers of examples 6 to 9 and/or the polyester fiber of comparative example 2 were subjected to measurements of main phase change temperature, enthalpy value (latent heat value), fiber strength, fiber elongation, and fiber specification. The measurement results are shown in table three.

Watch III

Note 1: the polyester fiber of comparative example 2 has two main phase transition temperatures and two corresponding enthalpy values (latent heat values)

As shown in table three, the temperature-adjusting nylon fibers of examples 6 to 9 have suitable phase transition temperatures to meet the wearing requirements of users. In addition, the temperature-adjusting nylon fibers of examples 6 to 9 have significantly larger enthalpy values (latent heat values) than the polyester fibers of comparative example 2, showing that they can have better temperature buffering effects, thereby achieving better temperature adjustment performance. In examples 6 to 9, the fiber strength can be between 3.4 g/denier and 4.0 g/denier, the fiber elongation can be between 35% and 52%, and the fiber specification can be between 70d/24f and 96d/24f, indicating that the temperature-regulated nylon fiber of the present disclosure meets the industrial standards and has good applicability.

According to the above embodiments of the present disclosure, the temperature-adjustable nylon fiber of the present disclosure includes a fiber body and a phase change composition doped in the fiber body. The phase change composition includes polytetrahydrofuran derivatives and succinic anhydride derivatives, and optionally includes maleic anhydride derivatives and straight chain fatty acid derivatives. The phase change composition disclosed by the invention has good heat resistance and phase transition between solid and elastomer (colloid), thereby providing good manufacturing convenience for the temperature-regulated nylon fiber. In addition, the fabric made of the temperature-adjusting nylon fiber has good warm-keeping effect and wearing portability.

While the foregoing is directed to embodiments of the present disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.