Exposed flame-retardant self-adhesive PVC (polyvinyl chloride) coiled material

Abstract

The utility model provides an exposed flame-retardant self-adhesive PVC (polyvinyl chloride) coiled material. The exposed flame-retardant self-adhesive PVC coiled material comprises an adhesive layer, a flame-retardant layer and a waterproof covering layer, the isolating layer is arranged on one side of the bonding layer, the flame-retardant layer is arranged on the side, away from the isolating layer, of the bonding layer, and the waterproof covering layer is arranged on the side, away from the bonding layer, of the flame-retardant layer; wherein the flame-retardant layer comprises a first flame-retardant layer and a second flame-retardant layer, the first flame-retardant layer comprises a first flame-retardant polyvinyl chloride film layer and a needle-punched aramid fiber non-woven fabric layer which are attached to each other, and the second flame-retardant layer comprises a second flame-retardant polyvinyl chloride film layer and a needle-punched pre-oxidized fiber non-woven fabric layer which are attached to each other; the first flame-retardant polyvinyl chloride film layer is attached to the needled pre-oxidized fiber non-woven fabric layer, the needled aramid fiber non-woven fabric layer is arranged on the side close to the bonding layer, and the second flame-retardant polyvinyl chloride film layer is arranged on the side close to the waterproof covering layer. The exposed flame-retardant self-adhesive PVC coiled material disclosed by the utility model has excellent flame retardance while being waterproof, so that an old steel structure roof can also have a good fireproof effect after being subjected to waterproof treatment.

Description

TECHNICAL FIELD

[0001] The utility model relates to PVC coiled material technical field, specifically relates to a kind of exposed flame-retardant self-adhesive PVC coiled material. BACKGROUND

[0002] Steel structure roof refers to the roof structure with steel as the main load-bearing component. In order to prolong the service life, ensure the safety of the building, improve the functionality and aesthetics of the building, etc., the importance and necessity of the waterproof structure must be fully considered during the design and construction of the steel structure roof, and appropriate measures must be taken to ensure the quality and effect of the waterproof structure.

[0003] Nowadays, for new steel structure roof, air barrier membrane, rock wool insulation board and high polymer waterproof layer are generally used to build the waterproof structure of the roof. However, the old steel structure roof is generally self-waterproof. Such roof needs to be re-waterproofed after 10-15 years of use. Due to the structural load-bearing relationship, rock wool insulation board cannot be used. Generally, L-shaped coiled material (PVC or TPO waterproof coiled material with fiber backing) or GL-shaped coiled material (glass fiber reinforced PVC or TPO waterproof coiled material with fiber backing) is used for full-adhesive construction waterproofing. In recent years, in order to save labor costs, self-adhesive high polymer coiled material is used for waterproofing.

[0004] For the waterproof structure of new steel structure roof, the rock wool layer has good fireproof effect, so even if the surface high polymer layer is ignited, it will not affect the overall structural stability of the roof and the safety of the plant interior. However, the high polymer layer, non-woven fabric, self-adhesive layer and isolation layer above the steel structure of the old steel structure roof are all flammable materials. Once a fire occurs, the entire roof will be ignited, which is very dangerous.

[0005] Therefore, it is necessary to design a waterproof coiled material with good flame-retardant effect for the flammable shortcomings of self-adhesive high polymer coiled material used for steel structure roof maintenance, so that the old steel structure roof can also have good fireproof effect after waterproofing. UTILITY MODEL CONTENTS

[0006] The utility model aims at the flammable shortcomings of self-adhesive high polymer coiled material used for existing steel structure roof maintenance, and provides an exposed flame-retardant self-adhesive PVC coiled material, which has excellent flame-retardant property while waterproofing, so that the old steel structure roof can also have good fireproof effect after waterproofing.

[0007] To achieve the above-mentioned purpose, the technical solutions adopted by the present application are as follows:

[0008] An exposed flame-retardant self-adhesive PVC coiled material comprises:

[0009] A bonding layer is provided with an isolation layer on one side;

[0010] A fire-retardant layer is arranged on the side of the adhesive layer away from the isolation layer;

[0011] A waterproof cover layer is arranged on the side of the fire-retardant layer away from the adhesive layer;

[0012] The fire-retardant layer comprises a first fire-retardant layer and a second fire-retardant layer, the first fire-retardant layer comprises a first fire-retardant polyvinyl chloride film layer and a needled aramid non-woven fabric layer, and the second fire-retardant layer comprises a second fire-retardant polyvinyl chloride film layer and a needled pre-oxidized fiber non-woven fabric layer.

[0013] The first fire-retardant polyvinyl chloride film layer is attached to the needled pre-oxidized fiber non-woven fabric layer, the needled aramid non-woven fabric layer is arranged on the side close to the adhesive layer, and the second fire-retardant polyvinyl chloride film layer is arranged on the side close to the waterproof cover layer.

[0014] Preferably, the thickness of the first fire-retardant polyvinyl chloride film layer is smaller than the thickness of the second fire-retardant polyvinyl chloride film layer.

[0015] Preferably, the thickness of the first fire-retardant polyvinyl chloride film layer is 0.4mm~0.9mm.

[0016] Preferably, the thickness of the second fire-retardant polyvinyl chloride film layer is 0.5mm~1.0mm.

[0017] Preferably, the grammage of the needled aramid non-woven fabric layer is 70~150g / m 2 .

[0018] Preferably, the grammage of the needled pre-oxidized fiber non-woven fabric layer is 70~150g / m 2 .

[0019] Preferably, the thickness of the waterproof cover layer is 0.03mm~0.12mm, and the waterproof cover layer comprises a polyvinylidene fluoride film layer.

[0020] Preferably, the waterproof cover layer is attached to the second fire-retardant polyvinyl chloride film layer through a glue layer, and the thickness of the glue layer is 0.005mm~0.01mm.

[0021] Preferably, the thickness of the adhesive layer is 0.3mm~0.6mm, and the adhesive layer comprises a butyl rubber self-adhesive layer.

[0022] Preferably, the thickness of the isolation layer is 0.03mm~0.15mm, and the isolation layer comprises a PE film layer or a PET film layer.

[0023] Compared with the prior art, the utility model has the advantages of:

[0024] The utility model discloses an exposed flame -retardant self -adhesion PVC coiled material, sets up two layers of flame -retardant layer between waterproof cover layer and adhesive layer, and the service life of PVC coiled material is greatly improved with polyvinylidene fluoride film waterproof cover layer, can extend the service life of coiled material to 30 years or more, and the coiled material is endowed with self -cleaning function simultaneously, the excellent heat preservation and flame -retardant performance are endowed to the coiled material through the combination application of multilayer material, and the performance of PVC coiled material can be greatly improved, and the traditional waterproof structure of rock wool plus coiled material can be directly replaced.

[0025] The utility model discloses an exposed flame -retardant self -adhesion PVC coiled material, keeps the self -adhesion high molecule coiled material convenient and fast while providing additional fire -proof and heat -insulating performance, and does not increase the additional load of roof, especially suitable for the maintenance of old steel structure roof. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure schematic diagram of the exposed flame -retardant self -adhesion PVC coiled material of the utility model.

[0027] Mark explanation: 1, adhesive layer, 11, isolation layer, 2, flame -retardant layer, 21, first flame -retardant layer, 211, first flame -retardant polyvinyl chloride film layer, 212, needle -punched aramid non -woven cloth layer, 22 second flame -retardant layer, 221, second flame -retardant polyvinyl chloride film layer, 222, needle -punched pre -oxidized silk non -woven cloth layer, 3, cover layer. DETAILED DESCRIPTION

[0028] In order to understand the technical content of the utility model more, the specific embodiment is raised and the following accompanying drawing is explained.

[0029] The aspects of the utility model are described in the disclosure with reference to the drawings, and many illustrated embodiments are shown in the drawings. The embodiments of the disclosure are not necessarily intended to include all aspects of the utility model. It should be understood that the above-mentioned various concepts and embodiments, as well as those concepts and embodiments described in more detail below, can be implemented in any one of many ways.

[0030] Combination Figure 1 As shown in the utility model exemplary embodiment of the present application, the exposed flame -retardant self -adhesion PVC coiled material includes adhesive layer 1, flame -retardant layer 2 and waterproof cover layer 3.

[0031] One side of adhesive layer is provided with isolation layer 11, and flame -retardant layer 2 is arranged on the side of adhesive layer away from isolation layer 11, and waterproof cover layer 3 is arranged on the side of flame -retardant layer away from adhesive layer 1.

[0032] As an optional example, adhesive layer 1 includes butyl rubber self -adhesion layer, which plays the role of bonding roof base layer, isolation layer 11 includes PE film layer or PET film layer, which is used to protect butyl rubber before construction.

[0033] As an optional example, the waterproof cover layer 3 includes a polyvinylidene fluoride film layer (PVDF film) as the outermost layer of the PVC coiled material, which has the functions of waterproofing and preventing ultraviolet radiation, thereby extending the outdoor service life of the coiled material to more than 30 years.

[0034] In addition, the PVDF film has good dirt resistance, and the surface is not easy to stick to the ash layer, thereby keeping the roof clean. Finally, the PVDF film has very good flame retardance, and the oxygen index can be more than 40%, while the oxygen index of ordinary PVC coiled material is only 24% (usually, when the oxygen index reaches 27%, it is a non-combustible material).

[0035] The flame-retardant layer includes a first flame-retardant layer 21 and a second flame-retardant layer 22. The first flame-retardant layer 21 includes a first flame-retardant polyvinyl chloride film layer 211 and a needle-punched aramid non-woven fabric layer 212 that are attached to each other. The second flame-retardant layer 22 includes a second flame-retardant polyvinyl chloride film layer 221 and a needle-punched pre-oxidized fiber non-woven fabric layer 222 that are attached to each other.

[0036] The first flame-retardant polyvinyl chloride film layer 211 is attached to the needle-punched pre-oxidized fiber non-woven fabric layer 222, and the needle-punched aramid non-woven fabric layer 212 is arranged on the side close to the adhesive layer 1. The second flame-retardant polyvinyl chloride film layer 221 is arranged on the side close to the waterproof cover layer 3.

[0037] As an optional example, the thickness of the first flame-retardant polyvinyl chloride film layer 211 is less than the thickness of the second flame-retardant polyvinyl chloride film layer 221.

[0038] In a more preferred example, the thickness of the first flame-retardant polyvinyl chloride film layer 211 is 0.4mm~0.9mm, and the thickness of the second flame-retardant polyvinyl chloride film layer 221 is 0.5mm~1.0mm.

[0039] The first flame-retardant polyvinyl chloride film layer 211 and the second flame-retardant polyvinyl chloride film layer 221 serve as the main body of the waterproof coiled material, which can prevent ultraviolet radiation and is waterproof and fireproof.

[0040] As an optional example, the gram weight of the needle-punched aramid non-woven fabric layer 212 is 70~150g / m 2 .

[0041] The needle-punched aramid non-woven fabric is mainly made of aramid and is processed through multiple needle punching and proper heat pressing, and has the characteristics of high porosity, good light transmission, strong moisture permeability, and high air permeability. At the same time, it is non-toxic and non-irritating, and is a new generation of environmentally friendly material.

[0042] The production process of the needle-punched aramid non-woven fabric includes opening, carding, and laying the fiber web, and then reinforcing the fabric through the needle. The needle has hooks that repeatedly pierce the fiber web to hook and reinforce the fibers, thereby forming the needle-punched non-woven fabric.

[0043] The needled aramid non-woven fabric layer 212 has good fireproof performance and certain heat preservation effect, and plays a role of isolating butyl rubber and polyvinyl chloride film in the structure of the utility model, preventing butyl rubber from migrating into the polyvinyl chloride film.

[0044] As an optional example, the gram weight of the needled pre-oxidized fiber non-woven fabric layer 222 is 70~150g / m 2 .

[0045] The raw material pre-oxidized fiber of the needled pre-oxidized fiber non-woven fabric is a black fiber formed by high-temperature pre-oxidation treatment of acrylonitrile protofilament, having excellent high-temperature resistance and flame retardance (limiting oxygen index greater than 40%), good corrosion resistance, excellent thermal stability (fiber does not melt, soften and shrink in combustion, and no droplet), and suitable textile processing performance (light, soft and water-absorbing) and other characteristics.

[0046] The production of the needled pre-oxidized fiber non-woven fabric involves complex steps such as polymerization, oxygenation, spinning, and temperature reduction to ensure that the fiber reaches the ideal pre-oxidation state.

[0047] The heat preservation effect of the pre-oxidized fiber non-woven fabric is 2~3 times that of ordinary non-woven fabric, and it also has good flame retardance, so that the needled pre-oxidized fiber non-woven fabric layer 222 plays a role of fireproofing and heat preservation.

[0048] As an optional example, the thickness of the waterproof covering layer 3 is 0.03mm~0.12mm.

[0049] As an optional example, the waterproof covering layer 3 is attached to the second flame-retardant polyvinyl chloride film layer 221 through the setting of the glue layer, and the thickness of the glue layer is 0.005mm~0.01mm.

[0050] As an optional example, the thickness of the bonding layer 1 is 0.3mm~0.6mm.

[0051] As an optional example, the thickness of the isolation layer 11 is 0.03mm~0.15mm.

[0052] In other embodiments, first, the second flame-retardant polyvinyl chloride film layer 221, the needled pre-oxidized fiber non-woven fabric layer 222, the first flame-retardant polyvinyl chloride film layer 211 and the needled aramid non-woven fabric layer 212 are sequentially stacked from top to bottom and are compounded by professional extrusion composite equipment;

[0053] Then, the butyl rubber is coated on the needled aramid non-woven fabric, and a layer of PE film or PET film is attached as a glue isolation layer outside the butyl rubber;

[0054] Thus, the finished product is obtained.

[0055] For better understanding, the utility model is further described below in combination with several specific examples, but the preparation process is not limited thereto, and the utility model content is not limited thereto.

[0056] Unless otherwise specified, the materials in the examples are prepared according to the existing method or directly purchased from the market. Example 1

[0057] The structure of the exposed flame-retardant self-adhesive PVC coiled material from top to bottom is as follows:

[0058] The first layer: polyvinylidene fluoride film (PVDF film) 0.07mm

[0059] The second layer: glue layer 0.005mm

[0060] The third layer: flame-retardant polyvinyl chloride film 0.7mm

[0061] The fourth layer: needle-punched pre-oxidized silk non-woven fabric 100g / m 2

[0062] The fifth layer: flame-retardant polyvinyl chloride film 0.6mm

[0063] The sixth layer: needle-punched aramid non-woven fabric 100g / m 2

[0064] The seventh layer: butyl rubber self-adhesive layer 0.40mm

[0065] The eighth layer: glue isolation layer (PET film) 0.05mm;

[0066] Through professional extrusion and compounding equipment, the third, fourth, fifth and sixth layers of composite materials are obtained, and then the butyl rubber is coated on the sixth layer of needle-punched aramid non-woven fabric, and a layer of PET film is attached to the outer layer of the butyl rubber as a glue isolation layer. Comparative Example 1

[0067] The structure of the PVC coiled material from top to bottom is as follows:

[0068] The first layer: ordinary polyvinyl chloride film 0.8mm

[0069] The second layer: needle-punched PET non-woven fabric 100g / m 2

[0070] The third layer: butyl rubber self-adhesive layer 0.40mm

[0071] The fourth layer: glue isolation layer PET film 0.10mm;

[0072] The ordinary polyvinyl chloride film is glued, compounded with the needle-punched PET non-woven fabric, then butyl glue is coated on the needle-punched PET non-woven fabric, and a layer of PET film is pasted on the outer layer of the butyl glue as a glue isolation layer.

[0073] Oxygen index test

[0074] The PVC coiled material of the embodiment and the comparative example is subjected to the oxygen index test, the oxygen index of the sample of the embodiment 1 can reach 29%, the oxygen index of the sample of the comparative example 1 is 23%, the exposed flame-retardant self-adhesive PVC coiled material is difficult to be ignited in the air, and has a good flame-retardant effect.

[0075] Flame direct flame test

[0076] Test method: the coiled material is laid flat on an iron plate, a 5cm length flame is directly used to burn the front surface of the coiled material for 3min, and the burning situation of the front and back surfaces of the coiled material is observed.

[0077] After burning, the surface of the sample of the embodiment 1 is carbonized, but the sample is not burned through; the surface of the sample of the comparative example 1 is carbonized in a large area, and the sample is burned through.

[0078] Although the utility model has disclosed as above with preferred embodiments, it is not used to limit the utility model. Those skilled in the art to which the utility model belongs can make various changes and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model is defined by the claims.

Claims

1. An exposed fire-retardant self-adhesive PVC roll material, characterized in that, The application relates to a fireproof waterproof composite material, which comprises the following parts: a bonding layer (1) provided with an isolation layer (11) on one side; a fireproof layer (2) arranged on the side of the bonding layer away from the isolation layer (11); a waterproof cover layer (3) arranged on the side of the fireproof layer away from the bonding layer (1); wherein the fireproof layer comprises a first fireproof layer (21) and a second fireproof layer (22), the first fireproof layer (21) comprises a first fireproof polyvinyl chloride film layer (211) and a needled aramid non-woven fabric layer (212) which are attached to each other, and the second fireproof layer (22) comprises a second fireproof polyvinyl chloride film layer (221) and a needled pre-oxidized fiber non-woven fabric layer (222) which are attached to each other; the first fireproof polyvinyl chloride film layer (211) is attached to the needled pre-oxidized fiber non-woven fabric layer (222), the needled aramid non-woven fabric layer (212) is arranged on the side close to the bonding layer (1), and the second fireproof polyvinyl chloride film layer (221) is arranged on the side close to the waterproof cover layer (3).

2. The exposed fire-retardant self-adhesive PVC roll material according to claim 1, characterized in that, The thickness of the first fireproof polyvinyl chloride film layer (211) is smaller than that of the second fireproof polyvinyl chloride film layer (221).

3. The exposed fire-retardant self-adhesive PVC roll material according to claim 1, characterized in that, The thickness of the first fireproof polyvinyl chloride film layer (211) is 0.4mm-0.9mm.

4. The exposed fire-retardant self-adhesive PVC roll according to claim 1, characterized in that, The thickness of the second fireproof polyvinyl chloride film layer (221) is 0.5mm-1.0mm.

5. The exposed fire retardant self-adhesive PVC roll goods of claim 1, wherein, The needle punched aramid nonwoven layer (212) has a grammage of 70-150 g / m 2 .

6. The exposed fire-retardant self-adhesive PVC roll goods of claim 1, wherein, The needle punched pre-oxidized yarn non-woven cloth layer (222) has a gram weight of 70-150 g / m 2 .

7. The exposed fire retardant self-adhesive PVC roll goods of claim 1, wherein, The thickness of the waterproof cover layer (3) is 0.03mm-0.12mm, and the waterproof cover layer comprises a polyvinylidene fluoride film layer.

8. The exposed fire-retardant self-adhesive PVC roll goods of claim 1, wherein, The waterproof cover layer (3) is attached to the second fireproof polyvinyl chloride film layer (221) through a glue layer, and the thickness of the glue layer is 0.005mm-0.01mm.

9. The exposed fire-retardant self-adhesive PVC roll goods of claim 1, wherein, The thickness of the bonding layer (1) is 0.3mm-0.6mm, and the bonding layer comprises a butyl rubber self-adhesive layer.

10. The exposed fire retardant self-adhesive PVC roll goods of claim 1, wherein, The thickness of the isolation layer (11) is 0.03mm-0.15mm, and the isolation layer comprises a PE film layer or a PET film layer.

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