CN115591138A

CN115591138A - Fire safety rope and preparation method thereof

Info

Publication number: CN115591138A
Application number: CN202211316694.0A
Authority: CN
Inventors: 袁狄平; 何路; 张晓锦; 刘春晓; 陈跃光; 高佳鑫; 陈斌; 陈德强; 陈志平; 赵悠霖; 黄伟航
Original assignee: Shenzhen Fire Rescue Detachment; Shenzhen Research Institute Of China University Of Mining And Technology; Shenzhen Technology Institute of Urban Public Safety Co Ltd
Current assignee: Shenzhen Fire Rescue Detachment; Shenzhen Research Institute Of China University Of Mining And Technology; Shenzhen Technology Institute of Urban Public Safety Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-13

Abstract

The invention discloses a fire safety rope and a preparation method thereof. Through the arrangement, the flame retardance of the rope core can be improved through the first fireproof layer, so that the high-temperature resistance of the rope core is improved, and the flame retardance of the rope core can be improved through the second fireproof layer, so that the high-temperature resistance of the rope core is improved, the rope is further protected, and the wear resistance and the high-temperature resistance of the safety rope are improved; meanwhile, the safety rope is arranged in a multi-layer mode, the structural strength of the safety rope can be improved, the safety rope has higher tensile strength, the high-temperature resistance of the safety rope is guaranteed, the wear resistance of the safety rope is improved, and the long-term combat requirement in the fire-fighting rescue task can be met.

Description

Fire safety rope and preparation method thereof

Technical Field

The invention relates to the technical field of fire-fighting accessories, in particular to a fire-fighting safety rope and a preparation method thereof.

Background

Currently, the commonly used fire safety lines can be distinguished mainly by material, weaving method and diameter size. Different materials, weaving methods and sizes of fire safety ropes have respective characteristics, purposes and use methods. The material for producing the fire safety rope is mainly composed of synthetic fiber, which is an ideal material for manufacturing the fire safety rope, and the most common materials comprise: polyamide, polyester fiber, polyolefin and Kevlar, which have the characteristics of long fiber length, high strength, corrosion resistance, easy storage and the like. Besides the materials, the performance characteristics of the fire safety rope are inseparable with the weaving mode, the fiber matching mode and the matching proportion of the fibers. The fire safety rope made according to different matching modes and weaving modes is also different in applicable occasions, each mode has the advantages and the disadvantages, and the fire safety rope is suitable for specific use occasions. The common weaving modes of the fire safety rope comprise a twisted rope, an eight-strand braided rope, a double-braided rope, a sandwich rope and the like.

However, the existing fire-fighting safety rope has poor wear resistance and high temperature resistance in the fire-fighting and rescue process, and is not enough to meet the long-term operational requirements in the fire-fighting and rescue task.

Disclosure of Invention

Therefore, the invention aims to solve the technical problems that the fire safety rope in the prior art has the defects of poor wear resistance and poor high temperature resistance in the fire extinguishing and rescuing process, and provides the fire safety rope and the preparation method thereof.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a fire safety line comprising: by interior rope core, first flame retardant coating, flexible layer, second flame retardant coating, rope skin, the coating that sets gradually from outside.

Further, in the step S1, the rope core is formed by mutually winding two polyarylate fiber strands and two aramid fiber strands; the first fireproof layer and the second fireproof layer are made of nitrogen-phosphorus-silicon hybrid derivative glue.

Further, the pliable layer adopts nylon to make, the rope skin adopts polyolefin fiber to make, the coating is SiO2 aerogel fire prevention coating.

A preparation method of a fire safety rope comprises the following steps:

s1, manufacturing a rope core and a flexible layer;

s2, coating a first fireproof layer on the periphery of the rope core, and coating a second fireproof layer on the periphery of the flexible layer;

s3, weaving the flexible layer coated with the second fireproof layer in the step S2 at the periphery of the rope core coated with the first fireproof layer;

s4, weaving a rope skin at the periphery of the second fireproof layer;

and S5, coating a coating layer on the periphery of the rope sheath.

Further, in the step of S1, two polyarylate fiber strands and two aramid fiber strands are mutually wound to manufacture a rope core; the flexible layer is made of nylon.

Further, in the step of S2,

the rope core is laid on a hard plate, nitrogen-phosphorus-silicon hybrid derivative glue is uniformly coated on the surface of the rope core by using a scraping ink stick, and the rope core coated with the nitrogen-phosphorus-silicon hybrid derivative glue is subjected to heat setting treatment, so that the nitrogen-phosphorus-silicon hybrid derivative glue forms a first fireproof layer on the surface of the rope core;

the flexible layer is tiled on the hard board, the nitrogen-phosphorus-silicon hybrid derivative glue is uniformly coated on the surface of the flexible layer by using the scraping ink stick, and the flexible layer coated with the nitrogen-phosphorus-silicon hybrid derivative glue is subjected to heat setting treatment, so that the nitrogen-phosphorus-silicon hybrid derivative glue forms a second fireproof layer on the surface of the flexible layer.

Further, in the step S4, the rope cover is made of polyolefin fiber.

Further, in the step S5, a solvent is used to dilute the silica aerogel, and then an additive is added to the diluted silica aerogel to prepare an aerogel coating; finally coating the aerogel coating on the rope skin; heating the rope leather coated with the aerogel coating to evaporate the solvent in the aerogel coating so that the aerogel coating forms a film on the rope leather; and drying and baking the formed film to form a coating layer.

Further, in the step of S2, the rope core coated with the hybrid derivative glue of nitrogen, phosphorus and silicon and the flexible layer coated with the hybrid derivative glue of nitrogen, phosphorus and silicon are subjected to heat setting treatment at 100-200 ℃ and within a pressure range of 0-0.6MPa for 30-90min.

Further, in the step of S5, a material of the additive is ammonium dihydrogen phosphate.

The technical scheme of the invention has the following advantages:

1. the fire-fighting safety rope provided by the invention comprises a rope core, a first fireproof layer, a flexible layer, a second fireproof layer, a rope sheath and a coating layer which are sequentially arranged from inside to outside, wherein the first fireproof layer can improve the fire resistance of the rope core so as to improve the high temperature resistance of the rope core, and the second fireproof layer can improve the fire resistance of the rope core so as to improve the high temperature resistance of the rope core, so that the rope is further protected and the wear resistance and the high temperature resistance of the safety rope are improved; meanwhile, the safety rope is arranged in a multi-layer mode, the structural strength of the safety rope can be improved, the safety rope has higher tensile strength, the high-temperature resistance of the safety rope is guaranteed, the wear resistance of the safety rope is improved, and the long-term combat requirement in the fire-fighting rescue task can be met.

2. According to the fire safety rope provided by the invention, the rope core is formed by mutually winding the two polyarylate fiber strands and the two aramid fiber strands, and by the arrangement, the tensile strength of the rope core can be improved, so that the wear resistance of the rope core is improved.

3. According to the fire safety rope provided by the invention, the first fire prevention layer and the second fire prevention layer are made of the nitrogen-phosphorus-silicon hybrid derivative glue, and the nitrogen-phosphorus-silicon hybrid derivative glue can promote the formation of the carbon layer, so that the carbon layer structure can prevent heat and oxygen from being transferred to the interior of the nitrogen-phosphorus-silicon hybrid derivative, the fiber matrixes of the rope core and the flexible layer are prevented from being decomposed, the formation of combustible gas is inhibited in the whole thermal degradation process, the flame retardance of the rope core and the flexible layer can be better improved, and the high temperature resistance of the rope core and the flexible layer is improved.

4. According to the fire safety rope provided by the invention, the flexible layer is made of nylon, and the inner rope core can be protected from abrasion by the arrangement, so that the abrasion resistance of the rope is improved.

5. According to the fire-fighting safety rope provided by the invention, the rope skin is made of the polyolefin fiber, so that the safety rope can not absorb water or lose strength even if the safety rope is soaked in water for a long time, meanwhile, the polyolefin fiber has good chemical stability, can resist most of acid and alkali erosion (except acid with oxidation property), can adapt to rescue scenes such as river rescue, water surface traction and the like, and meanwhile, the safety rope made of the polyolefin fiber can not break or lose efficacy in a cold environment (most regions in China).

6. According to the fire safety rope provided by the invention, the coating layer is the SiO2 aerogel fireproof coating, and due to the arrangement, the SiO2 aerogel which is used as a network porous structure material has extremely low heat conductivity, so that the heat insulation effect can be ensured, and the heat insulation performance of the rope leather is improved.

7. According to the preparation method of the fire safety rope, the rope core and the flexible layer coated with the nitrogen-phosphorus-silicon hybrid derivative glue are subjected to heat setting treatment, so that the nitrogen-phosphorus-silicon hybrid derivative glue forms the first fireproof layer and the second fireproof layer on the surfaces of the rope core and the flexible layer respectively, and therefore the connection stability between the rope core and the nitrogen-phosphorus-silicon hybrid derivative glue thereon and the connection stability between the flexible layer and the nitrogen-phosphorus-silicon hybrid derivative glue thereon can be enhanced, and the high temperature resistance of the rope core and the flexible layer is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a cross-sectional view of a fire safety line provided in accordance with an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fire safety rope according to an embodiment of the present invention.

Description of reference numerals: 1. a rope core; 21. a first fire resistant layer; 22. a second fire-resistant layer; 3. a flexible layer; 4. rope skin; 5. and (4) coating.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

A fire safety line as shown in fig. 1-2, comprising: the rope core 1, the first fireproof layer 21, the flexible layer 3, the second fireproof layer 22, the rope sheath 4 and the coating layer 5 are sequentially arranged from inside to outside.

According to the fire-fighting safety rope, the flame retardance of the rope core 1 can be improved through the first fireproof layer 21, so that the high-temperature resistance of the rope core is improved, the flame retardance of the rope core 1 can be improved through the second fireproof layer 22, so that the high-temperature resistance of the rope core is improved, the safety rope is further protected, and the wear resistance and the high-temperature resistance of the safety rope are improved; meanwhile, the safety rope is arranged in a multi-layer mode, the structural strength of the safety rope can be improved, the safety rope has higher tensile strength, the high-temperature resistance of the safety rope is guaranteed, the wear resistance of the safety rope is improved, and the long-term combat requirement in the fire-fighting rescue task can be met.

In this embodiment, rope core 1 specifically is formed by two polyarylate fiber strands and two aramid fiber strand intertwine, so sets up, can improve rope core 1's tensile strength, and then improves its wearability. The flexible layer 3 is made of nylon, so the inner rope core 1 can be protected from abrasion, and the abrasion resistance of the safety rope is improved.

In this embodiment, first flame retardant coating 21 and second flame retardant coating 22 are nitrogen phosphorus silicon system hybridization derivative glue, so set up, because nitrogen phosphorus silicon system hybridization derivative glue can promote the formation of charcoal layer, can prevent heat and oxygen to the inside transmission of nitrogen phosphorus silicon system hybridization derivative through the charcoal layer structure, thereby prevented the decomposition of the fibrous matrix of rope core 1 and pliable layer 3, and suppressed combustible gas's formation at whole thermal degradation in-process, can improve the fire resistance of rope core 1 and pliable layer 3 better, thereby improve its high temperature resistance.

In this embodiment, the rope sheath 4 is made of polyolefin fiber, so that the safety rope can not absorb water or lose strength even if being soaked in water for a long time, meanwhile, the polyolefin fiber has good chemical stability, can resist most of acid and alkali erosion (except acid with oxidation property), can adapt to rescue scenes such as river rescue and water surface traction, and meanwhile, the safety rope made of polyolefin fiber can not break or lose efficacy in a cold environment (most regions in China).

In this embodiment, coating 5 is SiO2 aerogel fire protection coating, so sets up, because SiO2 aerogel possess extremely low heat conductivity as a network porous structure material, can guarantee thermal-insulated effect to this improves the heat-proof quality of rope skin.

A preparation method of a fire safety rope comprises the following steps:

s1, manufacturing a rope core 1 and a flexible layer 3;

s2, coating a first fireproof layer 21 on the periphery of the rope core 1, and coating a second fireproof layer 22 on the periphery of the flexible layer 3;

s3, weaving the flexible layer 3 coated with the second fireproof layer 22 in the step S2 on the periphery of the rope core 1 coated with the first fireproof layer 21;

s4, weaving a rope skin 4 at the periphery of the second fireproof layer 22;

and S5, coating a coating layer 5 on the periphery of the rope sheath 4.

In the step S1, two polyarylate fiber strands and two aramid fiber strands are mutually wound to manufacture a rope core 1; the flexible layer 2 is made of nylon. So set up, flexible layer 3 through the nylon material can protect inside rope core 1 to avoid wearing and tearing, and then improves the wearability of safety rope, and compares the structure of traditional safety rope and can improve 20% -30% intensity.

In the step S2, the rope core 1 is flatly laid on a polytetrafluoroethylene hard plate, nitrogen-phosphorus-silicon hybrid derivative glue is uniformly coated on the surface of the rope core 1 by using a scraping ink stick, and the rope core 1 coated with the nitrogen-phosphorus-silicon hybrid derivative glue is subjected to heat setting treatment, so that the nitrogen-phosphorus-silicon hybrid derivative glue forms a first fireproof layer 21 on the surface of the rope core 1;

the flexible layer is tiled on a polytetrafluoroethylene hard plate, nitrogen-phosphorus-silicon hybrid derivative glue is uniformly coated on the surface of the flexible layer 3 by using the scraping ink stick, and the flexible layer 3 coated with the nitrogen-phosphorus-silicon hybrid derivative glue is subjected to heat setting treatment, so that the nitrogen-phosphorus-silicon hybrid derivative glue forms a second fireproof layer 22 on the surface of the flexible layer.

In the step S2, the rope core 1 coated with the hybrid derivative glue of nitrogen, phosphorus and silicon and the flexible layer 3 coated with the hybrid derivative glue of nitrogen, phosphorus and silicon are subjected to heat setting treatment at 150 ℃ and in a pressure range of 0.3MPa for 60min. So set up, can strengthen the rope core 1 and the above-mentioned nitrogen phosphorus silicon series hybridization derivative glue between the connection stability, and then guarantee the high temperature resistance of rope core 1. Specifically, the nitrogen-phosphorus-silicon hybrid derivative adhesive is made of silicon nitride.

In the step S5, firstly diluting the silicon dioxide aerogel by using a solvent, and then adding an additive into the diluted silicon dioxide aerogel to prepare an aerogel coating; finally, coating the aerogel coating on the rope skin 4; heating the rope skin 4 coated with the aerogel coating to evaporate the solvent in the aerogel coating, so that the aerogel coating forms a film on the rope skin 4; the formed film is dried and baked to form a coating layer 5. Specifically, the material of the additive is ammonium dihydrogen phosphate.

In this embodiment, the rope core 1, the flexible layer 3 and the rope sheath 4 are woven layer upon layer, so that the structural strength of the safety rope can be improved, the safety rope has higher tensile strength, and the wear resistance of the safety rope can be improved. Compare in fire rescue rope commonly used, the fire control safety rope of this application has higher tensile strength, and minimum breaking strength is 45kN. The elongation of the fire safety rope of the present application is 5% when the load bearing reaches 10% of the minimum breaking strength. Set up first flame retardant coating 21, second flame retardant coating 22 and coating, can effectively guarantee the high temperature resistance ability of safety rope, the fire control safety rope of this application has 400 ℃/30 min's strong high temperature resistance ability. The fire-fighting safety rope has strong wear resistance and high temperature resistance in the fire-fighting rescue process, and can meet the long-term operational requirements in the fire-fighting rescue task.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A fire safety line, comprising: the fireproof rope comprises a rope core (1), a first fireproof layer (21), a flexible layer (3), a second fireproof layer (22), a rope sheath (4) and a coating layer (5) which are arranged from inside to outside in sequence.

2. A fire safety rope as claimed in claim 1, wherein the core (1) is formed by two aramid fiber strands intertwined with two aramid fiber strands; the first fireproof layer (21) and the second fireproof layer (22) are made of nitrogen-phosphorus-silicon hybrid derivative glue.

3. A fire safety rope as claimed in claim 1, wherein the flexible layer (3) is made of nylon, the rope sheath (4) is made of polyolefin fiber, and the coating layer (5) is a SiO2 aerogel fire-resistant coating.

4. A preparation method of a fire safety rope is characterized by comprising the following steps:

s1, manufacturing a rope core (1) and a flexible layer (3);

s2, coating a first fireproof layer (21) on the periphery of the rope core (1), and coating a second fireproof layer (22) on the periphery of the flexible layer (3);

s3, weaving the flexible layer (3) coated with the second fireproof layer (22) in the step S2 on the periphery of the rope core (1) coated with the first fireproof layer (21);

s4, weaving a rope skin (4) on the periphery of the second fireproof layer (22);

and S5, coating a coating layer (5) on the periphery of the rope sheath (4).

5. A method for manufacturing a fire safety rope according to claim 4, wherein in the step S1, a rope core (1) is manufactured by winding two polyarylate fiber strands and two aramid fiber strands with each other; the flexible layer (3) is made of nylon.

6. The method of manufacturing a fire safety rope according to claim 4, wherein, in the step S2,

spreading the rope core (1) on a hard board, uniformly coating nitrogen-phosphorus-silicon hybrid derivative glue on the surface of the rope core (1) by using a scraping ink stick, and performing heat setting treatment on the rope core (1) coated with the nitrogen-phosphorus-silicon hybrid derivative glue to enable the nitrogen-phosphorus-silicon hybrid derivative glue to form a first fireproof layer (21) on the surface of the rope core (1);

the flexible layer (3) is tiled on a hard plate, the nitrogen-phosphorus-silicon hybrid derivative glue is uniformly coated on the surface of the flexible layer (3) by using the scraping ink stick, and the flexible layer (3) coated with the nitrogen-phosphorus-silicon hybrid derivative glue is subjected to heat setting treatment, so that the nitrogen-phosphorus-silicon hybrid derivative glue forms a second fireproof layer (22) on the surface of the flexible layer (3).

7. A method of manufacturing a fire safety rope according to claim 4, wherein in the step S4, the rope sheath (4) is made of polyolefin fiber.

8. The method for preparing a fire safety rope according to claim 4, wherein in the step S5, a solvent is used to dilute the silica aerogel, and then an additive is added to the diluted silica aerogel to prepare an aerogel coating; finally, coating the aerogel coating on the rope leather (4); heating the rope leather (4) coated with the aerogel coating to evaporate the solvent in the aerogel coating so that the aerogel coating forms a film on the rope leather (4); the formed film is dried and baked to form a coating layer (5).

9. The method for preparing a fire safety rope according to claim 6, wherein in the step S2, the rope core (1) coated with the NPSi hybrid derivative glue and the flexible layer (3) coated with the NPSi hybrid derivative glue are subjected to heat setting treatment at 100-200 ℃ and in the pressure range of 0-0.6MPa for 30-90min.

10. A method of manufacturing a fire safety rope according to claim 8, wherein in the step S5, the material of the additive is ammonium dihydrogen phosphate.