Flame-retardant sealing strip

Abstract

The utility model relates to the field of sealing strips, and particularly discloses a flame-retardant sealing strip which comprises a sealing strip body, the interior of the sealing strip body is hollow, a plurality of partition plates distributed at equal intervals in the length direction of the sealing strip body are fixedly arranged on the inner wall of a cavity in the sealing strip body, and flame retardant storage cavities are formed between the adjacent partition plates. A through hole which penetrates through the upper side wall of the sealing strip body and is communicated with the flame retardant storage cavity is formed in the upper side wall of the sealing strip body, the flame retardant storage cavity is filled with flame retardant, and a flame retardant layer is fixed to the upper side face of the sealing strip body. The flame-retardant layer can increase the flame retardance of the sealing strip, the flame-retardant layer rapidly expands at high temperature to form a porous carbonization layer, at the moment, the liquid absorption strip conveys the silicon-based liquid flame retardant in the flame retardant storage cavity into the flame-retardant layer and rapidly diffuses in the flame-retardant layer, the silicon-based liquid flame retardant is decomposed and reacts under the action of the high temperature, and the flame-retardant performance of the sealing strip is improved. Therefore, the temperature of the surface of the sealing strip is absorbed, oxygen around the sealing strip is inhibited from participating in combustion, and the flame retardance of the sealing strip is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sealing strip, concretely to a fire -retardant sealing strip. BACKGROUND

[0002] Sealing strip is a product that seals something, makes it not easy to open, plays the role of shock absorption, waterproof, sound insulation, heat insulation, dust prevention, fixation and the like.

[0003] The traditional sealing strip is mainly made of rubber and fire -retardant agent mixture, so as to improve its fire -retardant property, because in order to guarantee the sealing effect and elasticity of the sealing strip, the amount of the mixed fire -retardant agent in it is small, thereby leading to the insufficient fire -retardant property of the traditional sealing strip in the fire.

[0004] Therefore, it is necessary to design a fire -retardant sealing strip to alleviate the above -mentioned problems. INVENTION CONTENTS

[0005] The utility model is provided with a fire -retardant sealing strip, which overcomes the above -mentioned defects in the prior art.

[0006] According to the fire -retardant sealing strip of the utility model, the fire -retardant layer can increase the fire -retardant property of the sealing strip, and the fire -retardant agent in the fire -retardant agent storage cavity decomposes and reacts under the action of high temperature, thereby absorbing the temperature on the surface of the sealing strip and inhibiting the oxygen around the sealing strip from participating in combustion, so that the fire -retardant property of the sealing strip is further improved.

[0007] Through the above -mentioned technical scheme, the fire -retardant layer can increase the fire -retardant property of the sealing strip, and the fire -retardant agent in the fire -retardant agent storage cavity decomposes and reacts under the action of high temperature, thereby absorbing the temperature on the surface of the sealing strip and inhibiting the oxygen around the sealing strip from participating in combustion, so that the fire -retardant property of the sealing strip is further improved.

[0008] The utility model further sets up: sealing strip main part is made of long strip shape by ternary ethylene propylene rubber adds fire -retardant agent.

[0009] Through the above -mentioned technical scheme, the sealing strip main part made of ternary ethylene propylene rubber has excellent anti -aging performance such as sunlight resistance, oxygen resistance, ultraviolet resistance, radiation resistance and good mechanical property, so that it has strong sealing property and high durability.

[0010] The utility model further sets up: the protective ring of half circular cylinder is fixed on the upper end surface of the sealing strip main part, and the protective ring and the sealing strip main part are of the same material.

[0011] Through the technical scheme, the protection ring can preliminarily prevent the fire from contacting the sealing strip body, and improve the flame retardance, and the elasticity of the protection ring increases the shock absorption effect of the sealing strip.

[0012] The utility model discloses further set up as: the partition and sealing strip body are same material integrative forming, the flame retardant in flame retardant storage cavity is silicon series liquid flame retardant.

[0013] Through the technical scheme, the silicon series liquid flame retardant has a faster reaction speed in high temperature and better flame retardant effect.

[0014] The utility model discloses further set up as: the flame retardant layer is made of expandable graphite, and the flame retardant layer is located in the protection ring.

[0015] Through the technical scheme, the flame retardant layer can expand rapidly to form a porous carbonized layer in high temperature, and the silicon series liquid flame retardant in the flame retardant storage cavity can quickly fill the expanded flame retardant layer, thereby increasing the flame retardance of the flame retardant layer.

[0016] The utility model discloses further set up as: the through -hole is fixed with liquid absorbing strip, and one end of liquid absorbing strip is in abutment with the bottom wall of flame retardant storage cavity, and the other end is in abutment with the flame retardant layer.

[0017] Through the technical scheme, the liquid absorbing strip can absorb and transport the silicon series liquid flame retardant in the flame retardant storage cavity to the flame retardant layer.

[0018] The utility model discloses further set up as: liquid absorbing strip is made of meta-aramid.

[0019] Through the technical scheme, the liquid absorbing strip made of meta-aramid has excellent flame retardance and thermal stability, so that it can also absorb and transport the silicon series liquid flame retardant in high temperature.

[0020] The utility model discloses the beneficial effect is: the flame retardant layer can increase the flame retardance of the sealing strip, the flame retardant layer rapidly expands to form a porous carbonized layer in high temperature, at this time, the liquid absorbing strip transports the silicon series liquid flame retardant in the flame retardant storage cavity to the flame retardant layer and diffuses rapidly in the flame retardant layer, the silicon series liquid flame retardant decomposes and reacts under the action of high temperature, thereby absorbing the temperature on the surface of the sealing strip and inhibiting the oxygen around the sealing strip from participating in combustion, thereby improving the flame retardance of the sealing strip. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of the utility model;

[0022] Figure 2 It is the sectional view of the utility model;

[0023] Figure 3 It is the structure schematic diagram of the through -hole in the utility model.

[0024] Fig.:

[0025] 10, sealing strip body; 11, protective ring; 12, flame retardant layer; 13, flame retardant storage cavity; 14, liquid absorbing strip; 15, partition; 16, through hole. DETAILED DESCRIPTION

[0026] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings shown, and are only for the convenience of the simplified description of the present application, and are not indicative or implied that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Figure 1

[0027] In order to make the purpose and advantages of the present application more clear and explicit, the present application will be specifically described below in combination with examples, and it should be understood that the following text is only used to describe one or several specific embodiments of the present application, and does not strictly limit the specific protection range requested by the present application, such as in this text, the terms up and down and left and right are not limited to their strict geometric definitions, but include reasonable and inconsistent tolerances for machining or human error, and the specific features of the flame-retardant sealing strip are described in detail below:

[0028] One embodiment of the present application:

[0029] Referring to Figures 1-3 ​The utility model provides a kind of fire -retardant sealing strip, including sealing strip main body 10, sealing strip main body 10 inside hollow, multiple equidistant distribution's baffle 15 are fixed on the inner wall of the cavity in sealing strip main body 10 along the length direction of sealing strip main body 10, baffle 15 can increase the support strength of sealing strip main body 10, form fire -retardant storage chamber 13 between adjacent baffle 15, through hole 16 that is communicated with fire -retardant storage chamber 13 and is set in the upper side wall of sealing strip main body 10 is opened, fire -retardant storage chamber 13 is filled with fire -retardant, sealing strip main body 10 upper side is fixed with a layer of fire -retardant layer 12, sealing strip main body 10 is made of long strip shape by adding fire -retardant to three element ethylene propylene rubber, semi-cylindrical protective ring 11 is fixed on the upper end surface of sealing strip main body 10, protective ring 11 and sealing strip main body 10 are same material, baffle 15 and sealing strip main body 10 are integrally formed of same material, the fire -retardant in fire -retardant storage chamber 13 in the utility model is polydimethylsiloxane liquid fire -retardant, under high temperature, silicon fire -retardant can decompose to produce silicon dioxide or other non -combustible or difficult combustible substance, these substances can form a layer of isolation film on material surface, this layer of isolation film can effectively prevent oxygen and burning contact, to reduce the progress of combustion reaction, play fire -retardant effect, silicon fire -retardant can absorb a large amount of heat in the process of thermal decomposition, this endothermic effect can reduce the temperature of material, slow down the speed of combustion, even make combustion process stop, a large amount of inert gas, such as nitrogen, carbon dioxide etc. can be released during combustion process. These inert gases can dilute the oxygen concentration in air, reduce the oxygen content of combustion area, to hinder the progress of combustion reaction, fire -retardant layer 12 is made of expandable graphite, fire -retardant layer 12 is located in protective ring 11, under high temperature condition, expandable graphite can expand sharply, form a thick porous carbonized layer. This expansion process effectively suffocates flame, because it reduces the contact area of combustible material and oxygen, thereby reducing the possibility of combustion, the through hole 16 is fixed with liquid absorbing strip 14, one end of liquid absorbing strip 14 is in contact with the bottom wall of fire -retardant storage chamber 13, the other end is in contact with fire -retardant layer 12, liquid absorbing strip 14 is made of meta-aramid, under high temperature, fire -retardant layer 12 expands rapidly to form a porous carbonized layer, liquid absorbing strip 14 absorbs polydimethylsiloxane liquid fire -retardant in fire -retardant storage chamber 13 and transports to fire -retardant layer 12, so that polydimethylsiloxane liquid fire -retardant diffuses in fire -retardant layer 12, further improve the fire -retardant of fire -retardant layer 12, to improve the fire -retardant of sealing strip.

[0030] Those skilled in the art can clearly make various modifications to the above embodiments without departing from the overall spirit and concept of the utility model. They all fall within the protection scope of the utility model. The protection scheme of the utility model is subject to the claims attached to the utility model.

Claims

1. A fire barrier seal comprising a seal body (10) characterised in that: The sealing strip body (10) is hollow inside, a plurality of partition plates (15) are fixed on the inner wall of the sealing strip body (10) and are equidistantly distributed along the length direction of the sealing strip body (10), a fire retardant storage cavity (13) is formed between adjacent partition plates (15), a through hole (16) is arranged in the upper wall of the sealing strip body (10) and communicates with the fire retardant storage cavity (13), the fire retardant storage cavity (13) is filled with fire retardant, and a fire retardant layer (12) is fixed to the upper side of the sealing strip body (10).

2. A fire barrier strip as defined in claim 1, wherein: The sealing strip body (10) is a long strip made of ethylene-propylene-diene rubber and added with fire retardant.

3. A fire barrier strip as defined in claim 2, wherein: A semicylindrical protection ring (11) is fixed to the upper end surface of the sealing strip body (10), and the protection ring (11) and the sealing strip body (10) are made of the same material.

4. A fire barrier strip as defined in claim 3, wherein: The partition plates (15) and the sealing strip body (10) are made of the same material and are integrally formed, and the fire retardant in the fire retardant storage cavity (13) is a silicon-based liquid fire retardant.

5. A fire barrier strip as defined in claim 4, wherein: The fire retardant layer (12) is made of expandable graphite, and the fire retardant layer (12) is located in the protection ring (11).

6. A fire barrier strip as defined in claim 5, wherein: A liquid absorbing strip (14) is fixed in the through hole (16), one end of the liquid absorbing strip (14) abuts against the bottom wall of the fire retardant storage cavity (13), and the other end abuts against the fire retardant layer (12).

7. A fire barrier strip as defined in claim 6, wherein: The liquid absorbing strip (14) is made of meta-aramid.

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