liquid guiding medium

Abstract

The application discloses a liquid-guiding medium, which comprises polyimide fibers and polyphthalamide fibers, wherein the polyimide fibers are mixedly spun with the polyphthalamide fibers. The liquid-guiding medium has good temperature resistance, high breaking strength, large elastic modulus and high consistency in the assembling and forming processes.

Description

Technical Field

[0001] This application relates to the field of atomization technology, and in particular to a liquid guiding medium. Background Technology

[0002] Electronic atomizing devices include an atomizing core and a liquid guiding medium covering the surface of the atomizing core. The liquid guiding medium transfers the atomizing matrix to the atomizing core, and the atomizing core atomizes the atomizing matrix.

[0003] Existing oil-conducting media generally use a blend of flax fiber and cotton. However, the liquid-conducting media prepared in this way have certain disadvantages: poor temperature resistance, easy carbonization during heating, affecting the suction experience; low tensile strength, low elastic modulus, and poor consistency during assembly and molding. Utility Model Content

[0004] The main objective of this application is to provide a liquid-conducting medium with good temperature resistance, high fracture strength, large elastic modulus, and high consistency during assembly and molding.

[0005] To achieve the above objectives, this application proposes a liquid-conducting medium, the liquid-conducting medium comprising:

[0006] Polyimide fibers; and

[0007] Polyphthalamide fiber;

[0008] The polyimide fiber is woven in combination with the polyphthalamide fiber.

[0009] Optionally, the mass fraction of the polyimide fiber is greater than or equal to 30% and less than or equal to 50%; the mass fraction of the polyphthalamide fiber is greater than or equal to 50% and less than or equal to 70%.

[0010] Optionally, the length of the polyimide fiber is greater than or equal to 20 mm and less than or equal to 100 mm, and the diameter of the polyimide fiber is greater than or equal to 0.5 dtex and less than or equal to 5 dtex; the length of the polyphthalamide fiber is greater than or equal to 20 mm and less than or equal to 100 mm, and the diameter of the polyphthalamide fiber is greater than or equal to 0.5 dtex and less than or equal to 5 dtex.

[0011] Optionally, the density of the polyimide fiber is greater than or equal to 1.25 g / cm³. 3 And less than or equal to 1.4 g / cm³ 3 The density of the polyphthalamide fiber is greater than or equal to 1.15 g / cm³. 3 And less than or equal to 1.3 g / cm³ 3 .

[0012] Optionally, the tensile strength of the polyimide fiber is greater than or equal to 0.5 GPa and less than or equal to 1.5 GPa; the tensile strength of the polyphthalamide fiber is greater than or equal to 50 MPa and less than or equal to 100 MPa.

[0013] Optionally, the elastic modulus of the polyimide fiber is greater than or equal to 20 GPa and less than or equal to 50 GPa; the elastic modulus of the polyphthalamide fiber is greater than or equal to 1 GPa and less than or equal to 5 GPa.

[0014] Optionally, the decomposition temperature of the polyimide fiber is greater than or equal to 500°C and less than or equal to 600°C; the decomposition temperature of the polyphthalamide fiber is greater than or equal to 250°C and less than or equal to 350°C.

[0015] Optionally, the polyimide fibers and the polyphthalamide fibers are intertwined and bound together.

[0016] Optionally, the density of the liquid-conducting medium is greater than or equal to 0.05 g / cm³. 3 And less than or equal to 0.3 g / cm³ 3 .

[0017] Optionally, the temperature resistance of the liquid guiding medium is greater than or equal to 320°C and less than or equal to 340°C.

[0018] In the liquid-conducting medium of this application, the liquid-conducting medium includes polyimide fibers and polyphthalamide fibers. The polyimide fibers and polyphthalamide fibers are mixed and woven together. The liquid-conducting medium has good temperature resistance, high tensile strength, large elastic modulus, and high consistency in assembly and molding processes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a product diagram of an embodiment of the liquid guiding medium of this application;

[0021] Figure 2 for Figure 1 A schematic diagram of the embodiment shown.

[0022] Explanation of icon numbers:

[0023] label name label name 100 Liquid-conducting medium 110 polyimide fiber 120 Polyphthalamide fiber

[0024] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0028] Please see Figure 1 and Figure 2 This application proposes a liquid-conducting medium 100, which includes polyimide (PI) fiber 110 and polyphthalamide (PPA) fiber 120, wherein the polyimide fiber 110 and polyphthalamide fiber 120 are blended and woven. The liquid-conducting medium 100 of this application has good temperature resistance, high tensile strength, large elastic modulus, and high consistency in assembly and molding processes.

[0029] In the liquid-conducting medium 100 of this application, polyimide fiber 110 and polyphthalamide fiber 120 are fixed by a hydroentangling process, and the polyimide fiber 110 and polyphthalamide fiber 120 are intertwined and bound together.

[0030] The density of the liquid-conducting medium in this application can be greater than or equal to 0.05 g / cm³. 3 And less than or equal to 0.3 g / cm³ 3 The density mentioned above can be adjusted according to actual needs.

[0031] The temperature resistance of the liquid-conducting medium in this application is greater than or equal to 320℃ and less than or equal to 340℃. The heating temperature during the atomization process is approximately 250℃. The temperature resistance of the liquid-conducting medium is higher than the heating temperature during the atomization process. Therefore, the liquid-conducting medium will not carbonize during heating, resulting in a stable inhalation taste and a good user inhalation experience.

[0032] The following provides a detailed description of polyimide fibers and polyphthalamide fibers.

[0033] Polyimide fibers are a class of polymers containing an imide ring (-CO-NR-CO-) in their main chain, and are organic polymer materials with excellent comprehensive properties. In the liquid-conducting medium of this application, the mass fraction of polyimide fibers can be greater than or equal to 30% and less than or equal to 50%. Further, the mass fraction of polyimide fibers is 30-35%, 40-50%, 32-45%, 45-50%, 35-48%, or any range within the above ranges or between any two of the above ranges. Even further, the mass fraction of polyimide fibers is 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, or any value between any two of the above values.

[0034] The liquid-conducting medium in this application is prepared using short-fiber polyimide fibers. The length of the polyimide fibers can be greater than or equal to 20 mm and less than or equal to 100 mm. Further, the length of the polyimide fibers can be 20–40 mm, 30–50 mm, 40–100 mm, 60–80 mm, 40–55 mm, or 60–75 mm, etc. Even further, the length of the polyimide fibers can be 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, 95 mm, or 100 mm, etc.

[0035] The diameter of polyimide fibers can be greater than or equal to 0.5 dtex and less than or equal to 5 dtex. Further, the diameter of polyimide fibers can be 1–5 dtex, 2–3 dtex, 0.5–2 dtex, 3.5–4 dtex, 2.5–4.5 dtex, or 1–3 dtex, etc. Even further, the diameter of polyimide fibers can be 0.5 dtex, 1 dtex, 1.5 dtex, 2 dtex, 2.5 dtex, 3 dtex, 3.5 dtex, 4 dtex, 4.5 dtex, or 5 dtex, etc.

[0036] The density of polyimide fibers can be greater than or equal to 1.25 g / cm³. 3 And less than or equal to 1.4 g / cm³ 3 Furthermore, the density of polyimide fibers can be 1.25–1.35 g / cm³. 3 1.25~1.3g / cm 3 1.3~1.4g / cm 3 1.25~1.28g / cm 3 1.32~1.37g / cm 3 Or 1.3~1.32g / cm 3 Furthermore, the density of polyimide fibers can be 1.25 g / cm³. 3 1.26 g / cm 3 1.27g / cm 3 1.28g / cm 3 1.29g / cm 3 1.30g / cm 3 1.31 g / cm 3 1.32g / cm 3 1.33g / cm 3 1.34 g / cm 3 1.35g / cm 3 1.36 g / cm 3 1.37g / cm 3 1.38g / cm 3 1.39 g / cm 3 Or 1.40 g / cm 3 wait.

[0037] The tensile strength of polyimide fibers can be greater than or equal to 0.5 GPa and less than or equal to 1.5 GPa. Therefore, liquid-conducting media prepared using polyimide fibers have relatively high tensile strength. Further, the tensile strength of polyimide fibers can be 0.5–1.2 GPa, 0.75–1.4 GPa, 0.5–0.7 GPa, 0.55–1.0 GPa, 0.7–1.5 GPa, or 0.55–0.65 GPa, etc. Furthermore, the tensile strength of polyimide fibers can be 0.5 GPa, 0.55 GPa, 0.6 GPa, 0.62 GPa, 0.65 GPa, 0.67 GPa, 0.7 GPa, 0.75 GPa, 0.76 GPa, 0.8 GPa, 0.85 GPa, 0.9 GPa, 0.95 GPa, 1.0 GPa, 1.1 GPa, 1.15 GPa, 1.2 GPa, 1.25 GPa, 1.3 GPa, 1.35 GPa, 1.4 GPa, 1.45 GPa, or 1.5 GPa, etc.

[0038] The elastic modulus of polyimide fibers can be greater than or equal to 20 GPa and less than or equal to 50 GPa. Therefore, liquid-conducting media prepared using polyimide fibers have a suitable elastic modulus. Further, the elastic modulus of polyimide fibers can be 25–30 GPa, 30–40 GPa, 35–50 GPa, 35–45 GPa, 37–40 GPa, or 30–45 GPa, etc. Even further, the elastic modulus of polyimide fibers can be 20 GPa, 22 GPa, 25 GPa, 28 GPa, 30 GPa, 32 GPa, 35 GPa, 37 GPa, 40 GPa, 41 GPa, 42 GPa, 45 GPa, 47 GPa, or 50 GPa, etc.

[0039] The decomposition temperature of polyimide fibers can be greater than or equal to 500℃ and less than or equal to 600℃. Therefore, liquid-conducting media prepared using polyimide fibers have relatively good temperature resistance.

[0040] Polyphthalamide fiber is a high-performance aromatic fiber whose main component is PA nylon. In the liquid-conducting medium of this application, the mass fraction of polyphthalamide fiber can be greater than or equal to 50% and less than or equal to 70%. Further, the mass fraction of polyphthalamide fiber can be 50-65%, 50-60%, 52-65%, 55-70%, 55-58%, or any range within the above ranges or between any two of the above ranges. Even further, the mass fraction of polyphthalamide fiber can be 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, or any value between any two of the above values.

[0041] The length of polyphthalamide fibers can be greater than or equal to 20 mm and less than or equal to 100 mm. Further, the length of polyphthalamide fibers can be 20–40 mm, 30–50 mm, 40–100 mm, 60–80 mm, 40–55 mm, or 60–75 mm, etc. Even further, the length of polyphthalamide fibers can be 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, 85 mm, 90 mm, 95 mm, or 100 mm, etc. The length of polyphthalamide fibers can be the same as or different from the length of polyimide fibers.

[0042] The diameter of polyphthalamide fibers can be greater than or equal to 0.5 dtex and less than or equal to 5 dtex. Further, the diameter of polyphthalamide fibers can be 1–5 dtex, 2–3 dtex, 0.5–2 dtex, 3.5–4 dtex, 2.5–4.5 dtex, or 1–3 dtex, etc. Even further, the diameter of polyphthalamide fibers can be 0.5 dtex, 1 dtex, 1.5 dtex, 2 dtex, 2.5 dtex, 3 dtex, 3.5 dtex, 4 dtex, 4.5 dtex, or 5 dtex, etc. The diameter of polyphthalamide fibers can be the same as or different from the diameter of polyimide fibers.

[0043] The density of polyphthalamide fiber can be greater than or equal to 1.15 g / cm³. 3 And less than or equal to 1.3 g / cm³ 3 Furthermore, the density of polyphthalamide fibers can be 1.25–1.3 g / cm³. 3 1.2~1.3g / cm 3 1.2~1.24g / cm 31.15~1.28g / cm 3 1.2~1.27g / cm 3 Or 1.23~1.3g / cm 3 Furthermore, the density of polyphthalamide fibers can be 1.15 g / cm³. 3 1.16 g / cm 3 1.17 g / cm 3 1.18 g / cm 3 1.19 g / cm 3 1.20g / cm 3 1.21 g / cm 3 1.22g / cm 3 1.23g / cm 3 1.24 g / cm 3 1.25g / cm 3 1.26 g / cm 3 1.27g / cm 3 1.28g / cm 3 1.29g / cm 3 Or 1.30g / cm 3 wait.

[0044] The tensile strength of polyphthalamide fibers can be greater than or equal to 50 MPa and less than or equal to 100 MPa. Therefore, liquid-conducting media prepared using polyphthalamide fibers have relatively high tensile strength. Further, the tensile strength of polyphthalamide fibers can be 50–70 MPa, 75–80 MPa, 65–85 MPa, 55–100 MPa, 70–80 MPa, or 55–65 MPa, etc. Even further, the tensile strength of polyphthalamide fibers can be 50 MPa, 55 MPa, 60 MPa, 65 MPa, 70 MPa, 75 MPa, 80 MPa, 85 MPa, 90 MPa, 95 MPa, or 100 MPa, etc.

[0045] The elastic modulus of polyphthalamide fibers can be greater than or equal to 1 GPa and less than or equal to 5 GPa. Therefore, liquid-conducting media prepared using polyphthalamide fibers have a suitable elastic modulus. Further, the elastic modulus of polyphthalamide fibers can be 2–3 GPa, 3–4 GPa, 3.5–5 GPa, 2–4.5 GPa, 3–3.5 GPa, or 1–4.5 GPa, etc. Even further, the elastic modulus of polyphthalamide fibers can be 1 GPa, 1.2 GPa, 1.5 GPa, 2 GPa, 2.5 GPa, 3 GPa, 3.5 GPa, 3.7 GPa, 4 GPa, 4.1 GPa, 4.2 GPa, 4.5 GPa, 4.7 GPa, or 5 GPa, etc.

[0046] The decomposition temperature of polyphthalamide fibers can be greater than or equal to 250℃ and less than or equal to 350℃. Therefore, liquid-conducting media prepared using polyphthalamide fibers have relatively good temperature resistance.

[0047] Example

[0048] The temperature resistance, oil conductivity, tensile strength, elastic modulus, consistency, and taste of existing liquid-conducting media and the liquid-conducting media of this application were tested and compared.

[0049] Table 1 Different groups of the liquid guiding medium in this application

[0050]

[0051] Table 2. Test results of existing liquid-conducting media and the liquid-conducting media of this application.

[0052]

[0053] The results above show that, compared with existing liquid guiding media, the liquid guiding media of this application has better high temperature resistance, higher fracture strength, higher elastic modulus, better consistency in assembly and molding processes, and stable taste.

[0054] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A liquid-conducting medium, characterized in that, include: Polyimide fibers; as well as Polyphthalamide fiber; The polyimide fiber is woven in combination with the polyphthalamide fiber.

2. The liquid-conducting medium according to claim 1, characterized in that, The mass fraction of the polyimide fiber is greater than or equal to 30% and less than or equal to 50%; the mass fraction of the polyphthalamide fiber is greater than or equal to 50% and less than or equal to 70%.

3. The liquid-conducting medium according to claim 1, characterized in that, The length of the polyimide fiber is greater than or equal to 20 mm and less than or equal to 100 mm, and the diameter of the polyimide fiber is greater than or equal to 0.5 dtex and less than or equal to 5 dtex; the length of the polyphthalamide fiber is greater than or equal to 20 mm and less than or equal to 100 mm, and the diameter of the polyphthalamide fiber is greater than or equal to 0.5 dtex and less than or equal to 5 dtex.

4. The liquid-conducting medium according to claim 1, characterized in that, The density of the polyimide fiber is greater than or equal to 1.25 g / cm³. 3 And less than or equal to 1.4 g / cm³ 3 The density of the polyphthalamide fiber is greater than or equal to 1.15 g / cm³. 3 And less than or equal to 1.3 g / cm³ 3 .

5. The liquid-conducting medium according to claim 1, characterized in that, The tensile strength of the polyimide fiber is greater than or equal to 0.5 GPa and less than or equal to 1.5 GPa; the tensile strength of the polyphthalamide fiber is greater than or equal to 50 MPa and less than or equal to 100 MPa.

6. The liquid-conducting medium according to claim 1, characterized in that, The elastic modulus of the polyimide fiber is greater than or equal to 20 GPa and less than or equal to 50 GPa; the elastic modulus of the polyphthalamide fiber is greater than or equal to 1 GPa and less than or equal to 5 GPa.

7. The liquid-conducting medium according to claim 1, characterized in that, The decomposition temperature of the polyimide fiber is greater than or equal to 500°C and less than or equal to 600°C; the decomposition temperature of the polyphthalamide fiber is greater than or equal to 250°C and less than or equal to 350°C.

8. The liquid-conducting medium according to any one of claims 1 to 7, characterized in that, The polyimide fibers and the polyphthalamide fibers are intertwined and bound together.

9. The liquid-conducting medium according to any one of claims 1 to 7, characterized in that, The density of the liquid-conducting medium is greater than or equal to 0.05 g / cm³. 3 And less than or equal to 0.3 g / cm³ 3 .

10. The liquid-conducting medium according to any one of claims 1 to 7, characterized in that, The temperature resistance of the liquid-conducting medium is greater than or equal to 320°C and less than or equal to 340°C.

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