High-temperature-resistant coating, high-temperature-resistant woven fire-fighting belt and preparation method thereof

Abstract

The invention relates to the technical field of fire-fighting materials, in particular to a high-temperature-resistant coating, a high-temperature-resistant woven fire-fighting belt and a preparation method thereof. The high-temperature-resistant coating is formed by a high-temperature-resistant coating, and the high-temperature-resistant coating comprises an inorganic high-temperature-resistant filler, an organic polymer binder, a coupling agent and a catalyst. The high-temperature-resistant woven fire-fighting belt comprises a woven fire-fighting belt body and a high-temperature-resistant coating coated on the surface of the woven fire-fighting belt body. The high-temperature-resistant woven fire hose has the advantages of simplicity in preparation, stable structure, excellent high-temperature resistance and light weight.

Description

Technical Field

[0001] The invention relates to the technical field of fire-fighting materials, and in particular to a high-temperature resistant coating, a high-temperature resistant braided fire-fighting belt and a preparation method thereof. Background Art

[0002] With the development of modern industry and construction technology, fire scenes have become more and more complex and severe, which puts higher requirements on the protective equipment of firefighters. In firefighting work, fire belts are one of the indispensable and important equipment. As an important firefighting equipment, the research and application of high-temperature resistant fire belts are of great significance. However, traditional fire belts are susceptible to thermal damage in high temperature environments, resulting in reduced strength and even breakage, which affects the fire extinguishing effect. At present, the research on fire belts in the patent documents with application numbers CN202311798596.X and CN202311173394.6 mostly involves research on fire belt unwinding mechanisms and equipment. There is less research on the materials of the fire belts themselves, especially research on high-temperature resistant coatings.

[0003] With the development of polymer materials, new high-temperature resistant materials continue to emerge, providing a material basis for the research of high-temperature resistant fire hoses. These new materials have excellent high-temperature resistance and chemical stability, and can meet the use needs of firefighters in high temperature and harsh environments. At the same time, with the continuous advancement of firefighting technology, the performance requirements for firefighting equipment are getting higher and higher. High-temperature resistant fire hoses not only need to have good high-temperature resistance, but also need to have high strength, wear resistance and other characteristics to cope with various complex situations at the fire scene. Traditional fire hoses are susceptible to heat damage in high temperature environments, resulting in reduced strength and even breakage, which affects the fire extinguishing effect.

[0004] Therefore, developing a fire belt with a high-temperature resistant coating to improve its stability and durability in high-temperature environments is an urgent problem to be solved in the current field of fire equipment technology. Summary of the invention

[0005] The present invention provides a high temperature resistant coating, a high temperature resistant braided fire fighting belt and a preparation method thereof, so as to solve the above problems existing in the prior art.

[0006] According to a first aspect of the present invention, the present invention provides a high temperature resistant coating, wherein the high temperature resistant coating is formed by a high temperature resistant paint, wherein the high temperature resistant paint comprises an inorganic high temperature resistant filler, an organic polymer binder, a coupling agent and a catalyst. Preferably, the inorganic high temperature resistant filler also comprises a high melting point and high thermal stability.

[0007] In the above scheme, a coating with high temperature resistance, wear resistance and bonding properties can be prepared by using inorganic high temperature resistant fillers, organic polymer binders, coupling agents and catalysts together. The high temperature resistant coating formed by the coating has excellent high temperature resistance, wear resistance and bonding properties, and can be used on fire fighting equipment to improve the stability and durability of these equipment in high temperature environments.

[0008] Furthermore, the mass ratio of the inorganic high temperature resistant filler, the organic polymer binder, the coupling agent and the catalyst is (60-80): (15-30): (2-5): (1-3).

[0009] In the above scheme, by limiting the mass ratio of the inorganic high temperature resistant filler, the organic polymer binder, the coupling agent and the catalyst within a reasonable range, the components can better cooperate with each other and improve the overall performance of the high temperature resistant coating.

[0010] Furthermore, the inorganic high temperature resistant filler is alumina or silicon nitride; And / or, the organic polymer binder is polyimide or polyetheretherketone; And / or, the coupling agent is poly(p-phenylenediamine)amide or poly(etheretherketone); And / or, the catalyst is benzoic acid or p-toluenesulfonic acid.

[0011] By rationally selecting the raw material types of the inorganic high temperature resistant filler, the organic polymer binder, the coupling agent and the catalyst, the components can better cooperate with each other and improve the overall performance of the high temperature resistant coating.

[0012] According to a second aspect of the present invention, the present invention provides application of the above-mentioned high temperature resistant coating on the fire fighting equipment.

[0013] Firefighting equipment may include fire belts, fire suits and fire extinguishers, etc.

[0014] According to the third aspect of the present invention, the present invention further provides a high temperature resistant braided fire fighting belt, the high temperature resistant braided fire fighting belt comprises a braided fire fighting belt body and a high temperature resistant coating applied to the surface of the braided fire fighting belt body; the high temperature resistant coating is the above-mentioned high temperature resistant coating; preferably, the thickness of the high temperature resistant coating is 0.1-0.3mm. Optionally, the thickness of the high temperature resistant coating can be 0.1mm, 0.15mm, 0.2mm, 0.25mm or 0.3mm, etc.

[0015] The woven fire belt body is made of high temperature resistant and wear-resistant fibers; preferably, the high temperature resistant and wear-resistant fibers include one or more of aramid fibers, glass fibers or basalt fibers; the high temperature resistant and wear-resistant fibers have a diameter of 100-200 µm.

[0016] Optionally, the diameter of the high temperature resistant and wear resistant fiber can be 100µm, 110µm, 120µm, 130µm, 140µm, 150µm, 160µm, 170µm, 180µm, 190µm or 200µm, etc.

[0017] In the above scheme, the high temperature resistant braided fire belt of the present invention comprises a braided fire belt body and a high temperature resistant coating coated on the surface of the braided fire belt body. Compared with the traditional fire belt, the braided fire belt is a three-dimensional tubular structure directly woven using textile technology. The structure is stable, easy to design, and has high strength between structural layers. The high temperature resistant coating of the present invention is arranged on the braided fire belt body, which can improve the high temperature resistance and wear resistance of the braided fire belt. The high temperature resistant braided fire belt of the present invention has the characteristics of light weight, integrated structural functions, high temperature resistance and excellent mechanical properties.

[0018] Furthermore, the wall thickness of the high temperature resistant braided fire protection belt is 1-3 mm, the bending strength is ≥10 MPa, and the volume density is ≤0.35 g / cm 3 .

[0019] According to a fourth aspect of the present invention, the present invention also provides a method for preparing a high temperature resistant braided fire fighting belt, which comprises the following steps: (1) Prepare the braided fire hose body, clean it, and dry it; (2) Mix the inorganic high temperature resistant filler, organic polymer binder, coupling agent and catalyst in proportion; (3) ball milling or stirring the mixed materials to fully disperse and mix the components to obtain a high temperature resistant coating; (4) uniformly coating the obtained high temperature resistant coating on the surface of the braided fire protection belt body; (5) The base belt coated with the high temperature resistant coating is heat treated so that the high temperature resistant coating forms a high temperature resistant coating on the surface of the woven fire belt body, and finally a high temperature resistant woven fire belt is obtained.

[0020] In the above scheme, the preparation method of a high temperature resistant braided fire belt of the present invention first prepares a braided fire belt body, washes to keep the surface of the braided fire belt body clean, and facilitates subsequent coating, and then coats the high temperature resistant coating on the cleaned and dried braided fire belt body to ensure that the high temperature resistant coating is evenly distributed on the surface of the fire belt body, and then performs heat treatment to make the high temperature resistant coating and the braided fire belt body tightly combined to form a high temperature resistant coating, and finally obtain a high temperature resistant braided fire belt. The preparation method of the present invention is simple and easy to implement, and is suitable for industrial production.

[0021] Furthermore, in step (1), the drying temperature is 50-70°C and the drying time is 2-4 hours.

[0022] Optionally, the drying temperature can be 50°C, 55°C, 60°C, 65°C or 70°C, etc., and the drying time can be 2h, 2.5h, 3h, 3.5h or 4h, etc.

[0023] Furthermore, in step (4), the coating method includes spraying, brushing or dipping; the number of coating times is 5-10 times.

[0024] Optionally, the coating may be performed 5 times, 6 times, 7 times, 8 times, 9 times or 10 times.

[0025] In the above scheme, by reasonably limiting the coating method and the number of coatings, it is beneficial to obtain a high-temperature resistant coating of ideal thickness, which is beneficial to improving the high-temperature resistance of the high-temperature resistant braided fire-fighting belt.

[0026] Furthermore, in step (5), the heat treatment temperature is 70-80°C and the time is 1.5-2.5h.

[0027] Optionally, the heat treatment temperature can be 70°C, 71°C, 72°C, 73°C, 74°C, 75°C, 76°C, 77°C, 78°C, 79°C or 80°C, etc., and the time can be 1.5h, 2h or 2.5h, etc.

[0028] In the above scheme, by limiting the temperature and time of the heat treatment within a reasonable range, it is helpful to improve the close bonding between the high-temperature resistant coating and the braided fire belt body, thereby forming a stable high-temperature resistant coating.

[0029] The high temperature resistant coating of the present invention can be widely used in the field of fire fighting equipment, such as fire fighting belts, fire fighting suits, fire extinguishers, etc., to improve the stability and durability of these equipment in high temperature environments.

[0030] The high-temperature resistant braided fire-fighting belt provided by the present invention has the advantages of simple preparation, stable structure, excellent high-temperature resistance and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a schematic cross-sectional view of a high temperature resistant braided fire fighting belt according to Example 1 of the present invention.

[0033] Figure 2 This is a cross-sectional coil diagram of the high temperature resistant braided fire fighting belt according to Example 1 of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The beneficial effects of the present invention will be described below in conjunction with specific embodiments and comparative examples.

[0036] Example 1

[0037] This embodiment provides a high temperature resistant braided fire fighting belt, such as Figure 1 As shown, the high temperature resistant braided fire fighting belt comprises a braided fire fighting belt body and a high temperature resistant coating coated on the surface of the braided fire fighting belt body, and the thickness of the high temperature resistant coating is 0.1 mm. The preparation method thereof specifically comprises the following steps: (1) Based on Figure 2 The cross-sectional coil diagram of the braided fire hose body shown is drawn on a machine diagram, and the fire hose body is braided using a braiding device, cleaned and dried in an oven at 60°C for 2-4 hours, wherein the fiber used for the braided fire hose body is glass fiber (with a diameter of 100µm).

[0038] (2) Mix the inorganic high temperature resistant filler, organic polymer binder, coupling agent and catalyst in proportion; The inorganic high temperature resistant filler is alumina, the organic polymer binder is polyimide, the coupling agent is polyparaphenylene diamine amide, the catalyst is benzoic acid, and the mass ratio of the inorganic high temperature resistant filler, the organic polymer binder, the coupling agent and the catalyst is 60:15:2:1.

[0039] (3) The mixed materials are ball-milled or stirred to ensure that the components are fully dispersed and mixed.

[0040] (4) Apply the obtained mixture 5 times by spraying, brushing or dipping to ensure that the high temperature resistant coating is evenly distributed on the surface of the fire hose body.

[0041] (5) The base belt coated with the high-temperature resistant coating is heat-treated in an oven at 80°C for 2 h to allow the coating to be tightly bonded to the fire belt body to form a high-temperature resistant coating, and finally a high-temperature resistant woven fire belt with a wall thickness of 1 mm is obtained.

[0042] Example 2

[0043] This embodiment provides a high temperature resistant braided fire fighting belt, and the structural schematic diagram is as follows Figure 1As shown, the thickness of the high temperature resistant coating is 0.2 mm, and the preparation method thereof specifically comprises the following steps: (1) Based on Figure 2 The cross-sectional coil diagram of the braided fire belt body shown is drawn on a machine diagram, and the fire belt body is woven using a braiding device, cleaned and dried in an oven at 60°C for 2-4 hours, wherein the fiber used for the braided fire belt body is aramid fiber (diameter is 150µm).

[0044] (2) Mix the inorganic high temperature resistant filler, organic polymer binder, coupling agent and catalyst in proportion; The inorganic high temperature resistant filler is silicon oxide, the organic polymer binder is polyetheretherketone, the coupling agent is polyetheretherketoneketone, the catalyst is toluenesulfonic acid, and the mass ratio of the inorganic high temperature resistant filler, the organic polymer binder, the coupling agent and the catalyst is 75:20:3:2.

[0045] (3) The mixed materials are ball-milled or stirred to ensure that the components are fully dispersed and mixed.

[0046] (4) Apply the obtained mixture 8 times by spraying, brushing or dipping to ensure that the high temperature resistant coating is evenly distributed on the surface of the fire hose body.

[0047] (5) The base belt coated with the high-temperature resistant coating is heat-treated in an oven at 80°C for 2 h to allow the coating to be tightly bonded to the fire belt body to form a high-temperature resistant coating, and finally a high-temperature resistant woven fire belt with a wall thickness of 2.5 mm is obtained.

[0048] Example 3

[0049] This embodiment provides a high temperature resistant braided fire fighting belt, and the structural schematic diagram is as follows Figure 1 As shown, the thickness of the high temperature resistant coating is 0.3 mm, and the preparation method thereof specifically comprises the following steps: (1) Based on Figure 2 The cross-sectional coil diagram of the braided fire hose body shown is drawn on a machine diagram, and the fire hose body is braided using a braiding device, cleaned and dried in an oven at 60°C for 2-4 hours, wherein the fiber used for the braided fire hose body is basalt fiber (with a diameter of 200µm).

[0050] (2) Mix the inorganic high temperature resistant filler, organic polymer binder, coupling agent and catalyst in proportion and uniformly.

[0051] The inorganic high temperature resistant filler is silicon oxide, the organic polymer binder is polyetheretherketone, the coupling agent is polyetheretherketoneketone, the catalyst is toluenesulfonic acid, and the mass ratio of the inorganic high temperature resistant filler, the organic polymer binder, the coupling agent and the catalyst is 80:30:5:3.

[0052] (3) The mixed materials are ball-milled or stirred to ensure that the components are fully dispersed and mixed.

[0053] (4) Apply the obtained mixture 10 times by spraying, brushing or dipping to ensure that the high temperature resistant coating is evenly distributed on the surface of the fire hose body.

[0054] (5) The base belt coated with the high-temperature resistant coating is heat-treated in an oven at 80°C for 2 h to allow the coating to be tightly bonded to the fire belt body to form a high-temperature resistant coating, and finally a high-temperature resistant woven fire belt with a wall thickness of 3 mm is obtained.

[0055] The high temperature resistant braided fire fighting belts obtained in Examples 1-3 were tested for bending strength, bulk density and mass loss rate at 400°C. The test results are shown in Table 1 below.

[0056] Table 1

[0057] It can be seen from the results in Table 1 that the high temperature resistant braided fire fighting belt of the present invention has the characteristics of stable structure, excellent high temperature resistance and light weight, and can be widely used in the field of fire fighting equipment, such as fire fighting belts, fire fighting suits, fire extinguishers, etc., to improve the stability and durability of these equipment in high temperature environments.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high temperature resistant coating, characterized in that: The high temperature resistant coating is formed by a high temperature resistant paint, and the high temperature resistant paint includes an inorganic high temperature resistant filler, an organic polymer binder, a coupling agent and a catalyst.

2. The high temperature resistant coating according to claim 1, characterized in that: The mass ratio of the inorganic high temperature resistant filler, the organic polymer binder, the coupling agent and the catalyst is (60-80): (15-30): (2-5): (1-3).

3. The high temperature resistant coating according to claim 1 or 2, characterized in that: The inorganic high temperature resistant filler is alumina or silicon nitride; And / or, the organic polymer binder is polyimide or polyetheretherketone; And / or, the coupling agent is poly(p-phenylenediamine)amide or poly(etheretherketone); And / or, the catalyst is benzoic acid or p-toluenesulfonic acid.

4. Application of the high temperature resistant coating according to any one of claims 1 to 3 on the fire fighting equipment.

5. A high temperature resistant braided fire protection belt, characterized in that: The high temperature resistant braided fire fighting belt comprises a braided fire fighting belt body and a high temperature resistant coating coated on the surface of the braided fire fighting belt body; the high temperature resistant coating is the high temperature resistant coating according to any one of claims 1 to 3; preferably, the thickness of the high temperature resistant coating is 0.1-0.3 mm; The woven fire belt body is made of high temperature resistant and wear-resistant fibers; preferably, the high temperature resistant and wear-resistant fibers include one or more of aramid fibers, glass fibers or basalt fibers; the high temperature resistant and wear-resistant fibers have a diameter of 100-200 µm.

6. The high temperature resistant braided fire fighting belt according to claim 5, characterized in that: The wall thickness of the high temperature resistant braided fire protection belt is 1-3 mm, the bending strength is ≥10 MPa, and the volume density is ≤0.35 g / cm 3 .

7. The method for preparing the high temperature resistant braided fire fighting belt according to claim 5 or 6, characterized in that: The steps include: (1) Weaving the warp yarn and the weft yarn to obtain a woven fire hose body, washing it, and drying it; (2) Mix the inorganic high temperature resistant filler, organic polymer binder, coupling agent and catalyst in proportion; (3) ball milling or stirring the mixed materials to fully disperse and mix the components to obtain a high temperature resistant coating; (4) uniformly coating the obtained high temperature resistant coating on the surface of the braided fire protection belt body; (5) The base belt coated with the high temperature resistant coating is heat treated so that the high temperature resistant coating forms a high temperature resistant coating on the surface of the woven fire fighting belt body, and finally a high temperature resistant woven fire fighting belt is obtained.

8. The preparation method according to claim 7, characterized in that: In step (1), the drying temperature is 50-70°C and the drying time is 2-4 hours.

9. The preparation method according to claim 7, characterized in that: In step (4), the coating method includes spraying, brushing or dipping; the number of coating times is 5-10 times.

10. The preparation method according to claim 7, characterized in that: In step (5), the heat treatment temperature is 70-80°C and the time is 1.5-2.5h.

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