Flame-retardant polyester yarn

Abstract

The utility model discloses a flame-retardant polyester yarn which comprises a core yarn layer, a plurality of flame-retardant polyester fibers are arranged in the core yarn layer, a wrap yarn layer is wrapped outside the core yarn layer, glass fibers are arranged on the wrap yarn layer at equal intervals, flame-retardant viscose fibers are arranged on the wrap yarn layer at equal intervals, and the flame-retardant polyester fibers are arranged on the wrap yarn layer at equal intervals. The glass fibers and the flame-retardant viscose fibers are arranged at intervals. The utility model relates to the technical field of polyester yarns, and solves the problems that in the prior art, the main component of polyester yarns is polyester compounds, the flame retardant property is poor, and the polyester yarns are easy to decompose and generate combustible gas in a high-temperature environment when a fire disaster occurs, so that the fire disaster quickly spreads, and the life and property safety of people is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of polyester yarns, in particular to a flame-retardant polyester yarn. Background Art

[0002] Polyester is an important variety of synthetic fiber and the trade name of polyester fiber in China. It is a fiber-forming polymer made by esterification or ester exchange and polycondensation reaction of purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials. The fiber made by spinning and post-treatment is called polyester yarn, which can withstand chemicals and frequent washing, and reduce the fading and discoloration of clothes. In the prior art, the main component of polyester yarn is polyester compound, which has poor flame retardant performance. In the event of a fire, it is easy to decompose in a high temperature environment to produce flammable gas, thereby causing the rapid spread of fire and affecting people's lives and property safety. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a flame-retardant polyester yarn, which solves the problem in the prior art that the main component of the polyester yarn is a polyester compound, which has poor flame retardant performance and is easily decomposed to produce flammable gases in a high temperature environment when a fire occurs, thereby causing the fire to spread rapidly and affecting people's lives and property safety.

[0004] To achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a flame-retardant polyester yarn, including a core yarn layer, a plurality of flame-retardant polyester fibers are arranged inside the core yarn layer, the outside of the core yarn layer is coated with a covering yarn layer, the covering yarn layer is equidistantly arranged with glass fibers, the covering yarn layer is equidistantly arranged with flame-retardant viscose fibers, and the glass fibers and flame-retardant viscose fibers are arranged at intervals.

[0005] Preferably, aromatic heterocyclic compounds are arranged inside the flame-retardant polyester fiber.

[0006] Preferably, a flame retardant coating is provided on the outside of the covering yarn layer.

[0007] Preferably, a plurality of the flame-retardant polyester fibers are arranged unidirectionally to obtain a core yarn layer, and the glass fibers and the flame-retardant viscose fibers are alternately arranged and twisted to obtain a covering yarn layer.

[0008] Preferably, flame retardants are disposed inside the flame retardant polyester fibers and the flame retardant viscose fibers.

[0009] The utility model provides a flame-retardant polyester yarn. It has the following beneficial effects: the flame-retardant polyester yarn is formed by the coordination of a core yarn layer, a flame-retardant polyester fiber, a covering yarn layer, a glass fiber and a flame-retardant viscose fiber, and by alternately arranging glass fibers with better flame-retardant properties and flame-retardant viscose fibers to cover the outside of a plurality of flame-retardant polyester fibers. The glass fibers, with their excellent high-temperature resistance, provide additional isolation protection for the polyester yarn. The flame-retardant viscose fibers, with their unique flame-retardant properties, enable the flame-retardant viscose fibers and the glass fibers to quickly form an isolation layer when the polyester yarn is attacked by flames, effectively improving the flame-retardant properties of the polyester yarn. At the same time, the polyester yarn has good gloss, strength and wear resistance, making the polyester yarn more durable in practical applications. When a fire occurs, it can slow down or prevent the further spread of the flame, thereby improving the safety of the user's life and property to a certain extent.

[0010] By combining flame-retardant polyester fibers with aromatic heterocyclic compounds and adopting a co-spinning method, compounds containing aromatic heterocyclic rings (such as pyridine, pyrimidine, etc.) are mixed with raw materials in a molten state, and compounds containing aromatic heterocyclic rings (such as pyridine, pyrimidine, etc.) are added to the interior of the polyester fibers. This can increase the heat resistance, rigidity and strength of the polyester fibers, thereby further improving the performance of the polyester fibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a sectional view of the appearance of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the utility model.

[0013] In the figure: 1. core yarn layer, 2. polyester fiber, 3. covering yarn layer, 4. glass fiber, 5. flame retardant viscose fiber, 6. flame retardant, 7. flame retardant coating, 8. flame retardant. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the prior art, the main component of polyester yarn is polyester compound, which has poor flame retardancy. When a fire occurs, it is easy to decompose and produce combustible gas in a high temperature environment, thereby causing the fire to spread rapidly and affecting people's lives and property safety.

[0016] In view of this, the utility model provides a flame-retardant polyester yarn, which is achieved by matching a core yarn layer, a flame-retardant polyester fiber, a covering yarn layer, a glass fiber and a flame-retardant viscose fiber, and by alternately arranging glass fibers with better flame-retardant properties and flame-retardant viscose fibers to cover the outside of a number of flame-retardant polyester fibers. The glass fibers, with their excellent high-temperature resistance, provide additional isolation protection for the polyester yarn, and the flame-retardant viscose fibers, with their unique flame-retardant properties, enable the flame-retardant viscose fibers and the glass fibers to quickly form an isolation layer when the polyester yarn is attacked by flames, thereby preventing the flame from spreading further and improving the flame-retardant properties of the polyester yarn. At the same time, the polyester yarn has good gloss, strength and wear resistance, making the polyester yarn more durable in practical applications.

[0017] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0018] Depend on Figure 1-2 It can be seen that a flame-retardant polyester yarn includes a core yarn layer 1, characterized in that: a plurality of flame-retardant polyester fibers 2 are arranged inside the core yarn layer 1, the core yarn layer 1 is composed of a plurality of flame-retardant polyester fibers 2, and is a core yarn structure of the polyester yarn, the outer portion of the core yarn layer 1 is coated with a covering yarn layer 3, the covering yarn layer 3 is composed of glass fibers 4 and flame-retardant viscose fibers 5, and are arranged alternately to form a coating on the core yarn layer 1, the covering yarn layer 3 is equidistantly arranged with glass fibers 4, the covering yarn layer 3 is equidistantly arranged with flame-retardant viscose fibers 5, and the glass fibers 4 and the flame-retardant viscose fibers 5 are arranged at intervals;

[0019] In the specific implementation process, it is worth pointing out that the core yarn layer 1 is composed of a plurality of flame-retardant polyester fibers 2, which is the core yarn structure of the polyester yarn, and the covering yarn layer 3 is composed of glass fiber 4 and flame-retardant viscose fiber 5, which are arranged alternately to form a coating on the core yarn layer 1. Through the coordination between the core yarn layer 1, the flame-retardant polyester fiber 2, the covering yarn layer 3, the glass fiber 4 and the flame-retardant viscose fiber 5, the glass fiber 4 with better flame-retardant performance and the flame-retardant viscose fiber 5 are arranged alternately to cover the outside of the plurality of flame-retardant polyester fibers 2. The glass fiber 4 provides additional isolation protection for the polyester yarn with its excellent high temperature resistance. The flame-retardant viscose fiber 5 has a unique flame-retardant property, so that when the polyester yarn is attacked by flame, the flame-retardant viscose fiber 5 and the glass fiber 4 can quickly form an isolation layer to prevent the further spread of the flame, thereby improving the flame-retardant performance of the polyester yarn, and at the same time, the polyester yarn has good gloss, strength and wear resistance, making the polyester yarn more durable in practical applications.

[0020] Furthermore, the flame retardant polyester fiber 2 is provided with an aromatic heterocyclic compound 6;

[0021] In the specific implementation process, it is worth noting that the compound containing aromatic heterocycles (such as pyridine, pyrimidine, etc.) is mixed with the raw material in a molten state by a blend spinning method, and the compound containing aromatic heterocycles (such as pyridine, pyrimidine, etc.) is added to the inside of the polyester fiber. The introduction of these compounds can increase the heat resistance, rigidity and strength of the polyester fiber;

[0022] Furthermore, a flame retardant coating 7 is provided on the outside of the covering yarn layer 3;

[0023] In the specific implementation process, it is worth noting that by immersing the polyester yarn in a solution of water or other solvents containing a flame retardant, a flame retardant coating 7 is formed on the fiber surface and the outside of the polyester yarn, preventing oxygen from contacting the fiber, thereby delaying the combustion process and further improving the flame retardant performance of the polyester yarn;

[0024] Furthermore, a plurality of flame-retardant polyester fibers 2 are arranged unidirectionally to obtain a core yarn layer 1, and glass fibers 4 and flame-retardant viscose fibers 5 are alternately arranged and twisted to obtain a covering yarn layer 3;

[0025] In the specific implementation process, it is worth pointing out that by arranging a plurality of flame-retardant polyester fibers 2 in a unidirectional manner to form a core yarn layer 1, the unidirectionally arranged fibers can provide excellent mechanical properties and stability, so that the mechanical properties of the polyester yarn in a specific direction are improved, and by coating the core yarn layer 1 with glass fibers 4 and flame-retardant viscose fibers 5 in an alternating arrangement, the strength and durability of the polyester yarn are effectively enhanced, so that the fabric can better disperse and withstand the force when subjected to external force, thereby reducing the possibility of fabric damage;

[0026] Furthermore, the flame retardant polyester fiber 2 and the flame retardant viscose fiber 5 are both provided with a flame retardant 8 inside;

[0027] In the specific implementation process, it is worth noting that the flame retardant 8 is mixed with the raw materials of the flame retardant polyester fiber 2 and the flame retardant viscose fiber 5 in a molten state by a co-spinning method to form polyester fiber and viscose fiber with good flame retardant properties. The flame retardant 8 is a nitrogen-based flame retardant, and its main component is a nitrogen compound, such as melamine, ammonium cyanate, etc. It has good flame retardant properties and thermal stability, and can effectively inhibit the combustion of polyester fiber and viscose fiber.

[0028] It is understandable that there are many flame retardants 8 that can be blended with polyester fibers and viscose fibers. In addition to nitrogen-based flame retardants, phosphorus-based flame retardants (such as tripolyphosphate, polyphosphate, etc.) and halogen-based flame retardants (such as antimony bromide, paraffin bromide, etc.) are also commonly used. They can be selected according to actual production.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0030] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame-retardant polyester yarn, comprising a core yarn layer (1), characterized in that: The core yarn layer (1) is provided with a plurality of flame-retardant polyester fibers (2) inside, the core yarn layer (1) is coated with a covering yarn layer (3) outside, the covering yarn layer (3) is provided with glass fibers (4) at equal intervals, the covering yarn layer (3) is provided with flame-retardant viscose fibers (5) at equal intervals, and the glass fibers (4) and the flame-retardant viscose fibers (5) are arranged at intervals.

2. The flame-retardant polyester yarn according to claim 1, characterized in that: Aromatic heterocyclic compounds (6) are arranged inside the flame-retardant polyester fiber (2).

3. The flame-retardant polyester yarn according to claim 1, characterized in that: The exterior of the covering yarn layer (3) is provided with a flame retardant coating (7).

4. The flame-retardant polyester yarn according to claim 1, characterized in that: A plurality of the flame-retardant polyester fibers (2) are arranged unidirectionally to obtain a core yarn layer (1), and the glass fibers (4) and the flame-retardant viscose fibers (5) are alternately arranged in sequence and spirally wound around the outside of the core yarn layer (1).

5. The flame-retardant polyester yarn according to claim 1, characterized in that: The flame retardant polyester fiber (2) and the flame retardant viscose fiber (5) are both provided with a flame retardant (8) inside.

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