Flame-retardant silk thread and sleeve

Abstract

The utility model provides a flame-retardant silk yarn and a sleeve, the silk yarn comprises a yarn core arranged along the axial direction of the silk yarn, the silk yarn is provided with a containing cavity and a containing groove, the containing groove is arranged around the outer side of the yarn core, the containing cavity is arranged in the yarn core, the silk yarn further comprises a flame-retardant layer, and the flame-retardant layer is arranged in the containing cavity. And the flame-retardant layer is arranged in the accommodating cavity and the accommodating groove. Therefore, the V-O flame-retardant effect of the silk yarn is achieved, and the situation that a flame-retardant layer is prone to falling off or aging in a traditional dipping or coating method is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of silk threads, and in particular to a silk thread with flame retardation and a sleeve. BACKGROUND

[0002] In the textile industry, silk threads are the basic elements that constitute fabrics, and their performance directly affects the quality and purpose of the final product. With the progress of science and technology and the changes in market demand, silk threads not only need to have good physical and mechanical properties, such as strength and wear resistance, but also need to meet specific functional requirements, such as flame retardation. Flame-retardant silk threads can effectively prevent the spread of fire and protect personal and property safety, and have been widely used in fire-fighting clothing, automotive interiors, home decoration, and other fields. However, traditional silk thread materials, such as cotton, hemp, silk, and polyester, have certain limitations in terms of flame retardation and are difficult to meet high-standard flame retardation requirements.

[0003] Traditional silk thread fireproofing techniques are mainly achieved through dipping or layering. Dipping usually involves coating a layer of flame retardant on the surface of the silk thread to give it some fireproofing properties. Layering, on the other hand, involves wrapping a layer of flame-retardant material around the silk thread to improve its fire resistance. These traditional methods can improve the flame-retardant effect of silk threads to some extent, but their effectiveness is often limited to the outside, and long-term use can cause the coating or outer wrapping material to age and fall off, reducing the flame-retardant properties.

[0004] Therefore, there is a need to provide a silk thread with flame retardation and a sleeve. SUMMARY

[0005] In view of the above, it is necessary to provide a silk thread with flame retardation and a sleeve to solve the above problems.

[0006] Embodiments of the present application provide a silk thread with flame retardation, which comprises a core disposed axially along the silk thread, the silk thread is provided with a receiving cavity and a receiving groove, the receiving groove is circumferentially disposed on the outside of the core, and the receiving cavity is disposed in the core, the silk thread further comprises a flame-retardant layer disposed in the receiving cavity and the receiving groove.

[0007] In at least one embodiment of the present application, the core is a PET fiber silk.

[0008] In at least one embodiment of the present application, the cross-sectional area of the flame-retardant layer is about 25% of the cross-sectional area of the flame-retardant silk thread.

[0009] In at least one embodiment of the present application, the cross-sectional area of the core is about 75% of the cross-sectional area of the flame-retardant silk thread.

[0010] In at least one embodiment of the present application, the accommodating cavity comprises a communicating portion, which is arranged in the core and extends along the axial direction, and the communicating portion is connected with the accommodating groove.

[0011] In at least one embodiment of the present application, the PET fiber yarn is a bottle grade polyester chip.

[0012] In at least one embodiment of the present application, along the axial direction, the accommodating cavity comprises at least one first radial opening and at least one second radial opening, and the first radial opening and the second radial opening are connected.

[0013] In at least one embodiment of the present application, the diameter of the first radial opening is greater than the diameter of the second radial opening.

[0014] In at least one embodiment of the present application, the accommodating cavity comprises a transition zone, one end of which is connected with the first radial opening, and the other end of which is connected with the second radial opening.

[0015] The present application provides a sleeve, which comprises any one of the flame-retardant yarns; the sleeve comprises a first bundle and a second bundle, the first bundle and the second bundle are woven, and the first bundle and the second bundle are each stranded by a plurality of the yarns.

[0016] The above-mentioned flame-retardant yarn is distributed in the entire cross section of the yarn through the design of the accommodating cavity and the accommodating groove. The accommodating cavity is provided with a certain space, which can accommodate and distribute the flame retardant, and the accommodating groove further guarantees the distribution of the flame retardant by surrounding the core, so as to realize the V-O flame-retardant effect of the yarn and avoid the situation that the flame-retardant layer is easy to fall off or age in the traditional impregnation or coating method. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the core in the embodiment of the present application.

[0018] Figure 2 It is a structural view of the axial direction of the core.

[0019] Figure 3 It is a structural view of the internal accommodating cavity of the axial direction of the core.

[0020] Figure 4 It is a structural view of the first bundle and the second bundle of the sleeve in the embodiment of the present application.

[0021] MAIN ELEMENT SYMBOL EXPLANATION

[0022] 100. A wire with flame retardant; 10. a core; 11. a containing cavity; 111. a communicating part; 112. a first radial port; 113. a second radial port; 114. a transition area; 12. a containing groove; 20. a flame retardant layer; F. axial direction;

[0023] 200. a sleeve; 210. a first wire bundle; 220. a second wire bundle. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described below in conjunction with the drawings, obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0025] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or can exist a middle component at the same time. When a component is considered to be "provided on" another component, it can be directly provided on the other component or can exist a middle component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and the like used herein are for illustrative purposes only.

[0026] The embodiments of the present application provide a wire with flame retardant,

[0027] The wire with flame retardant provided above, through the design of the containing cavity and the containing groove, the flame retardant can be distributed in the entire cross section of the wire. The containing cavity is provided with a certain space, which can accommodate and distribute the flame retardant, and the containing groove further guarantees the distribution of the flame retardant by surrounding the core, so as to realize the V-O flame retardant effect of the wire, and avoid the situation that the flame retardant layer is easy to fall off or age in the traditional impregnation or coating method.

[0028] Some embodiments of the present application will be described in detail below in conjunction with the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] According to Figures 1-4 , the embodiments of the present application provide a wire with flame retardant 100, the wire comprises: a core 10 provided along the axial direction F of the wire, the wire is provided with a containing cavity 11 and a containing groove 12, the containing groove 12 is provided on the outer side of the core 10, the containing cavity 11 is provided in the core 10, and the wire further comprises a flame retardant layer 20, the flame retardant layer 20 is provided in the containing cavity 11 and the containing groove 12.

[0030] Specifically, the core 10 serves as a carrier for the distribution of the flame retardant, ensures the structural stability of the wire, and serves as a basic framework for the flame retardation effect. The accommodation cavity 11 is arranged in the hollow area inside the core 10, and serves to accommodate the flame retardant, so that the flame retardant can be uniformly distributed inside the wire. The accommodation groove 12 is a groove part arranged on the outer periphery of the core 10, surrounds the outside of the core 10, provides space for the distribution of the flame retardant, and ensures that the flame retardant layer 20 can be uniformly coated outside the wire. The flame retardant layer 20 improves the fire resistance and high-temperature resistance of the wire through the internal and external double layout, so as to achieve the V-0 effect of the wire and prevent the wire from burning or flame spreading in high-temperature or fire conditions.

[0031] The number of the accommodation cavity 11 and the accommodation groove 12 can be multiple, the diameter of each accommodation cavity 11 and each accommodation groove 12 is inconsistent, and the shape of the cross section of the accommodation cavity 11 and the accommodation groove 12 is also inconsistent. From the axial direction F, the length of the accommodation groove 12 and the accommodation cavity 11 is inconsistent, and the length direction shape is irregular stripe type.

[0032] Further, the flame retardant and the PET before melting of the core 10 are melted at a high temperature of about 270°, and are stirred. In the high-temperature stirring process, bubbles or cavities are generated in the mixture of the flame retardant and the PET before melting of the core 10. In the stirring process, the bubbles or cavities are captured in the PET melt, thereby forming the accommodation cavity 11 and the accommodation groove 12. The formed accommodation cavity 11 and the accommodation groove 12 are added with the flame retardant for joint stirring during melting, so that the flame retardant is added to the accommodation cavity 11 and the accommodation groove 12. The flame retardant layer 20 is integrated with the core 10 through the accommodation cavity 11 and the accommodation groove 12, thereby reducing the influence of the external environment on the flame retardation effect of the wire. Even if the outer layer is physically damaged by friction, wear, etc., the internal flame retardant can still effectively play a flame retardation effect.

[0033] In a specific embodiment, the core 10 is a PET fiber wire.

[0034] Specifically, the PET fiber itself has a certain flame retardation effect, and the existence of the flame retardant layer 20 in the accommodation cavity 11 and the accommodation groove 12 improves the flame retardation effect of the wire under high-temperature conditions.

[0035] In a specific embodiment, the cross-sectional area of the flame retardant layer 20 accounts for about 25% of the cross-sectional area of the flame-retardant wire. The flame-retardant wire has sufficient flame retardation effect, and waste of excessive flame-retardant material is avoided.

[0036] In a specific embodiment, the core 10 forms a cross-sectional area that is about 75% of the cross-sectional area of the flame-retardant thread. This significantly enhances the tensile strength and compression resistance of the thread, ensuring its durability in practical applications, particularly under tension, wear or other mechanical action, while maintaining the structural integrity of the thread.

[0037] In a specific embodiment, the accommodation cavity 11 comprises a communication portion 111, which is arranged in the core 10 and extends along the axial direction F, and which is connected to the accommodation groove 12.

[0038] Specifically, the communication portion 111 connects the accommodation groove 12 and the accommodation cavity 11, avoiding uneven accumulation of materials inside the thread, which helps to improve the consistency of the flame-retardant effect. The axial F extension of the communication portion 111 makes the distribution of the accommodation cavity 11 more uniform, which can better control the combination mode between the flame retardant and the core 10 material, ensuring the overall stability of the material.

[0039] In a specific embodiment, the PET fiber thread is a bottle-grade polyester chip.

[0040] Specifically, the fiber thread made of polyethylene terephthalate (PET) material has high mechanical strength, heat resistance, chemical resistance and other properties, and is therefore widely used in the production of textiles, plastic products and various composite materials. PET chips melt at high temperatures and are stretched into long fibers by spinning equipment. In this process, the flame retardant is added to the molten state of PET to ensure its uniform distribution during the spinning process.

[0041] Further, after the bottle-grade polyester chip and the flame retardant particles are heated and melted at a high temperature of 270°, the bottle-grade polyester chip is fused with the flame retardant during stirring by screw stirring, and is stretched into a fine thread by the spinneret of the spinning machine and solidified during the cooling process.

[0042] In a specific embodiment, along the axial direction F, the accommodation cavity 11 comprises at least one first radial port 112 and at least one second radial port 113, and the first radial port 112 is connected to the second radial port 113.

[0043] Specifically, the connection of the first radial port 112 and the second radial port 113 makes the accommodation cavity 11 continuous throughout the length of the thread. The first radial port 112 and the second radial port 113 allow the flame retardant to flow through the first radial port 112 or the second radial port 113 and be uniformly distributed in the accommodation cavity 11.

[0044] In a specific embodiment, the diameter of the first radial port 112 is greater than the diameter of the second radial port 113.

[0045] Specifically, the first radial port 112 and the second radial port 113 provide flow control when the fire retardant enters the containing cavity 11. The larger first radial port 112 can help the fire retardant quickly enter the containing cavity 11, and the smaller second radial port 113 helps control the flow speed of the fire retardant in the cavity, so that it is uniformly distributed throughout the containing cavity 11. In addition, the smaller second radial port 113 also helps to control the amount of fire retardant used and the distribution range to some extent, avoiding excessive accumulation of fire retardant in a certain part, affecting the overall effect.

[0046] In a specific embodiment, the containing cavity 11 includes a transition zone 114, one end of which is connected to the first radial port 112, and the other end is connected to the second radial port 113.

[0047] Specifically, the transition zone 114 is a tapered transition section gradually narrowing between the first radial port 112 and the second radial port 113, which helps the fire retardant to be uniformly distributed in the containing cavity 11, reduces the resistance of the fire retardant during flow, and makes the structure of the core 10 more compact when the core 10 is stretched.

[0048] The application provides a sleeve 200, which includes any of the fire-retardant silk threads described above. The sleeve 200 includes a first bundle 210 and a second bundle 220, which are woven together, and each of the first bundle 210 and the second bundle 220 is twisted from a plurality of the silk threads.

[0049] Specifically, the first bundle 210 and the second bundle 220 are alternately woven to form the sleeve 200, providing overall strength and flexibility of the sleeve 200. Each bundle is twisted from a plurality of fire-retardant silk threads, improving the overall tensile strength of the bundle. The fire-retardant silk threads are woven into the sleeve 200, so that the sleeve 200 has a fire-retardant effect. The sleeve 200 is installed on the surface of a cable or equipment to protect it from external environments such as friction, high temperature, and fire.

[0050] In the embodiments of the application, the sample size of the fire-retardant silk thread is 130mmx16.8mmx2.3mm, the test conditions are (23±2)℃ and (50±10)% relative humidity, and the sample is placed for 48h.

[0051] The combustion detection step is as follows: using a flame height of 20+1mm, a Bunsen burner is placed at the center position below the sample, the Bunsen burner tube is 10+1mm away from the bottom end of the sample, the ignition time is 10+0.5s, after 10+0.5s, the Bunsen burner is moved away at a speed of 300mm / sec for at least 150mm, at the same time, the afterflame time t1 is recorded, when the afterflame stops, the Bunsen burner should be ignited immediately for 10+0.5s, after 10+0.5s, the Bunsen burner is moved away at a speed of 300mm / sec for at least 150mm, at the same time, the afterflame time tz and the afterburning time t3 are recorded.

[0052] The following is the grade of the flame retardant performance of the sample when burning according to the determination condition. Please refer to Table 1.

[0053] Table 1 is the grade determination table of the flame retardant performance.

[0054]

[0055] Table 1

[0056] The following will list five sample experiments respectively, and the test results of the combustion of the five sample experiments respectively. Please refer to Table 2.

[0057] Table 2 is the test result of the flame retardant performance of the flame-retardant wire in the present application.

[0058]

[0059] Table 2

[0060] According to the above Table 2, it is concluded that the flame-retardant wire of the present application has the effect of flame retardant V-0.

[0061] Therefore, the above-mentioned flame-retardant wire 100 has the flame-retardant effect of V-0, which avoids the situation that the flame-retardant layer 20 is easy to fall off or age in the traditional impregnation or coating method.

[0062] The above is only an embodiment of the present application, and it should be pointed out that for those skilled in the art, improvements can be made without departing from the creative concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. A yarn having flame retardation, characterized by, The wire includes a core arranged along an axial direction of the wire, the wire is provided with a receiving cavity and a receiving groove, the receiving groove is arranged around an outer side of the core, the receiving cavity is arranged in the core, the wire further includes a flame-retardant layer, the flame-retardant layer is arranged in the receiving cavity and the receiving groove.

2. A yarn with flame retardation according to claim 1, characterized in that, The core is a PET fiber wire.

3. A yarn with flame retardation according to claim 1, wherein A cross-sectional area of the flame-retardant layer accounts for about 25% of a cross-sectional area of the flame-retardant wire.

4. The yarn with flame retardation according to claim 1, wherein A cross-sectional area of the core accounts for about 75% of the cross-sectional area of the flame-retardant wire.

5. The yarn with flame retardation according to claim 1, wherein The receiving cavity includes a communication part arranged in the core and extending along the axial direction, the communication part is connected with the receiving groove.

6. A yarn with flame retardation according to claim 2, wherein The PET fiber wire is a bottle-grade polyester chip.

7. The yarn with flame retardation according to claim 1, wherein Along the axial direction, the receiving cavity includes at least one first radial port and at least one second radial port, the first radial port is connected with the second radial port.

8. A yarn with flame retardation according to claim 7, characterized in that, A diameter of the first radial port is greater than a diameter of the second radial port.

9. A yarn with flame retardation according to claim 8, characterized in that, The receiving cavity includes a transition area, one end of the transition area is connected with the first radial port, and the other end of the transition area is connected with the second radial port.

10. A bushing characterized by, The wire includes the flame-retardant wire according to any one of claims 1-9; The sleeve includes a first wire bundle and a second wire bundle, the first wire bundle and the second wire bundle are woven, and the first wire bundle and the second wire bundle are twisted by a plurality of the wires.

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