Flame-retardant three-layer hot-melt adhesive tape with good adhesive property and preparation method of flame-retardant three-layer hot-melt adhesive tape

Abstract

The invention discloses a flame-retardant three-layer hot-melt adhesive tape with good adhesive property and a preparation method thereof. The flame-retardant three-layer hot-melt adhesive tape comprises a warp-knitted fabric base material, an aluminum foil layer and a halogenated blending modified polymer material layer, the halogenated blending modified polymer material layer comprises the following components in parts by weight: elastic TPU (thermoplastic polyurethane) hot melt adhesive, block saturated polyester resin with a polyether branched chain, high-polymerization-degree ammonium polyphosphate, halide, epoxy resin, tri-dipentaerythritol, montmorillonite, a curing agent, a cross-linking agent, an antioxidant and an ultraviolet light absorber. The invention relates to the technical field of daily necessities. According to the flame-retardant three-layer hot-melt adhesive tape with the good adhesive property and the preparation method thereof, an inorganic or organic flame retardant is added into a formula, a polymer reacts with halogen to generate a halogenated polymer, the flame resistance of the polymer is improved through blending modification, and flame-retardant treatment on an adhesive material is realized by utilizing the high molecular weight of a high molecular material; a layer of aluminum foil is arranged in the middle of the flame-retardant layer, and the aluminum foil has good flame retardance.

Description

Technical Field

[0001] The present invention relates to the technical field of daily necessities, and particularly to a flame-retardant three-layer hot-melt tape with good adhesion performance and a preparation method thereof. Background Art

[0002] The hot-pressing tape is also known as the hot-melt tape. Different from the pressure-sensitive tape, at normal temperature, the hot-pressing tape does not show pressure-sensitive adhesiveness but has anti-blocking property; however, when subjected to instant high-temperature hot-pressing, it generates an adhesive force 10 times that of the pressure-sensitive tape.

[0003] The existing hot-melt tapes have poor flame-retardant effects and are extremely prone to burning and failure in high-temperature environments. It is impossible to improve the flame resistance of the hot-melt tape by designing it in three layers, and it cannot achieve the purpose of ensuring both the adhesiveness of the hot-melt tape itself and good flame resistance, thus bringing great inconvenience to people's use.

[0004] In the present invention, by adding inorganic or organic flame retardants to the formula, reacting polymers with halogens to generate halogenated polymers, improving the flame resistance of polymers through blending modification, enhancing the flame resistance of materials by improving the resin matrix, using the principle that the thermal decomposition temperature of the polymer composite material is lower than the combustion temperature, and using the high molecular weight of the polymer material to achieve flame-retardant treatment of the rubber compound, and then sandwiching an aluminum foil layer in the middle of the flame-retardant layer. The aluminum foil has relatively good flame retardancy and high extensibility, which is suitable for actual use. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the existing technology, the present invention provides a flame-retardant three-layer hot-melt tape with good adhesion performance and a preparation method thereof, which solves the problems that the existing hot-melt tapes have poor flame-retardant effects and are extremely prone to burning and failure in high-temperature environments, and it is impossible to improve the flame resistance of the hot-melt tape by designing it in three layers, and it cannot achieve the purpose of ensuring both the adhesiveness of the hot-melt tape itself and good flame resistance.

[0007] (2) Technical Solutions

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions: A flame-retardant three-layer hot-melt tape with good adhesion performance includes a layer of warp-knitted fabric substrate, a layer of aluminum foil layer, and a layer of halogenated blend-modified polymer material layer;

[0009] The halogenated blend-modified polymer material layer comprises, by weight parts: 20-30 parts of elastic TPU hot melt adhesive, 10-20 parts of block saturated polyester resin with polyether branches, 5-10 parts of high-polymerization-degree ammonium polyphosphate, 5-10 parts of halide, 5-10 parts of epoxy resin, 3-5 parts of tris-pentaerythritol, 3-5 parts of montmorillonite, 1-3 parts of curing agent, 1-3 parts of crosslinking agent, 1-3 parts of antioxidant and 1-3 parts of ultraviolet absorber.

[0010] Preferably, the halogenated blend-modified polymer material layer comprises, by weight parts: 25 parts of elastic TPU hot melt adhesive, 15 parts of block saturated polyester resin with polyether branches, 7 parts of high-polymerization-degree ammonium polyphosphate, 7 parts of halide, 7 parts of epoxy resin, 4 parts of tris-pentaerythritol, 4 parts of montmorillonite, 2 parts of curing agent, 2 parts of crosslinking agent, 2 parts of antioxidant and 2 parts of ultraviolet absorber.

[0011] Preferably, the halogenated blend-modified polymer material layer comprises, by weight parts: 20 parts of elastic TPU hot melt adhesive, 10 parts of block saturated polyester resin with polyether branches, 5 parts of high-polymerization-degree ammonium polyphosphate, 5 parts of halide, 5 parts of epoxy resin, 3 parts of tris-pentaerythritol, 3 parts of montmorillonite, 1 part of curing agent, 1 part of crosslinking agent, 1 part of antioxidant and 1 part of ultraviolet absorber.

[0012] Preferably, the halogenated blend-modified polymer material layer comprises, by weight parts: 30 parts of elastic TPU hot melt adhesive, 20 parts of block saturated polyester resin with polyether branches, 10 parts of high-polymerization-degree ammonium polyphosphate, 10 parts of halide, 10 parts of epoxy resin, 5 parts of tris-pentaerythritol, 5 parts of montmorillonite, 3 parts of curing agent, 3 parts of crosslinking agent, 3 parts of antioxidant and 3 parts of ultraviolet absorber.

[0013] Preferably, the halide is any combination of two or more of carbon tetrachloride, sulfur hexafluoride or chlorine trifluoride.

[0014] Preferably, the curing agent is one of vinyltriamine, diaminocyclohexane or ethylenediamine.

[0015] Preferably, the crosslinking agent is one of dicumyl peroxide, benzoyl peroxide or diisopropylbenzene hydroperoxide.

[0016] The present invention also provides a preparation method of a flame-retardant three-layer hot melt tape with good bonding performance, which specifically comprises the following steps:

[0017] S1. Ingredient treatment: First, weigh the required weight parts of elastic TPU hot melt adhesive, block saturated polyester resin with polyether branches, high-polymerization-degree ammonium polyphosphate, halide, epoxy resin, tris-pentaerythritol, montmorillonite, curing agent, crosslinking agent, antioxidant and ultraviolet absorber respectively by weighing equipment for standby use;

[0018] S2. Mixed film formation: Pour the raw materials weighed in step S1 into a mixing and stirring device in sequence, and mix and stir at a rotation speed of 300 - 600 r / min and a temperature of 30 - 40 °C for 1 - 2 h to fully mix each component, thereby obtaining a mixed slurry. Pour the obtained mixed slurry into an extrusion device and extrude it into a film to obtain a halogenated blend-modified polymer material layer;

[0019] S3. Laminating treatment: Select a clean warp-knitted fabric substrate and an aluminum foil layer respectively. Coat a layer of adhesive on the warp-knitted fabric substrate through a coating device, then laminate the aluminum foil layer to the warp-knitted fabric substrate coated with the adhesive through a laminating device, and apply pressure for 5 - 10 min through a pressing device to completely bond the warp-knitted fabric substrate and the aluminum foil layer, thereby obtaining a composite layer;

[0020] S4. Embossing treatment: Heat and laminate the film of the halogenated blend-modified polymer material layer obtained in step S2 to the composite layer obtained in step S3, then perform embossing and cooling treatments, and then perform slitting treatment according to the required size through a slitting device. After slitting is completed, a flame-retardant three-layer hot melt tape with good bonding performance is obtained. Finally, perform winding and packaging and quality inspection treatments in sequence.

[0021] (III) Beneficial effects

[0022] The present invention provides a flame-retardant three-layer hot melt tape with good bonding performance and a preparation method thereof. Compared with the prior art, it has the following beneficial effects: The flame-retardant three-layer hot melt tape with good bonding performance and its preparation method include a warp-knitted fabric substrate layer, an aluminum foil layer, and a halogenated blend-modified polymer material layer. The halogenated blend-modified polymer material layer includes, by weight: 20 - 30 parts of elastic TPU hot melt adhesive, 10 - 20 parts of block saturated polyester resin with polyether branches, 5 - 10 parts of high-polymerization-degree ammonium polyphosphate, 5 - 10 parts of halide, 5 - 10 parts of epoxy resin, 3 - 5 parts of tris-pentaerythritol, 3 - 5 parts of montmorillonite, 1 - 3 parts of curing agent, 1 - 3 parts of cross-linking agent, 1 - 3 parts of antioxidant, and 1 - 3 parts of ultraviolet absorber. By adding inorganic or organic flame retardants to the formula, reacting the polymer with halogen to generate halogenated polymers, improving the flame resistance of the polymer through blend modification, enhancing the flame resistance of the material by improving the resin matrix, using the principle that the thermal decomposition temperature of the polymer composite material is lower than the combustion temperature, and using the high molecular weight of the polymer material to achieve flame retardant treatment of the rubber compound. Then, by sandwiching an aluminum foil layer in the flame retardant layer, the aluminum foil has relatively good flame retardancy and high extensibility, which is suitable for actual use. Description of the drawings

[0023] Figure 1 It is a flow chart of the preparation method of the present invention. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1 , the embodiments of the present invention provide three technical solutions: a flame-retardant three-layer hot-melt tape with good adhesion performance and its preparation method, specifically including the following embodiments:

[0026] Example 1

[0027] A flame-retardant three-layer hot-melt tape with good adhesion performance includes a layer of warp-knitted fabric substrate, a layer of aluminum foil layer, and a layer of halogenated blend modified polymer material layer;

[0028] The halogenated blend modified polymer material layer includes, by weight: 25 parts of elastic TPU hot melt adhesive, 15 parts of block saturated polyester resin with polyether branches, 7 parts of high-polymerization degree ammonium polyphosphate, 7 parts of halide, 7 parts of epoxy resin, 4 parts of tris-pentaerythritol, 4 parts of montmorillonite, 2 parts of curing agent, 2 parts of crosslinking agent, 2 parts of antioxidant, and 2 parts of ultraviolet absorber. The halide is a composition of carbon tetrachloride, sulfur hexafluoride, and chlorine trifluoride. The curing agent is vinyltriamine, and the crosslinking agent is diisopropylbenzene peroxide.

[0029] The embodiments of the present invention also provide a preparation method of a flame-retardant three-layer hot-melt tape with good adhesion performance, specifically including the following steps:

[0030] S1. Ingredient treatment: First, weigh the required parts by weight of elastic TPU hot melt adhesive, block saturated polyester resin with polyether branches, high-polymerization degree ammonium polyphosphate, halide, epoxy resin, tris-pentaerythritol, montmorillonite, curing agent, crosslinking agent, antioxidant, and ultraviolet absorber respectively by weighing equipment for later use;

[0031] S2. Mixing and film forming: Pour the raw materials weighed in step S1 into a mixing and stirring device in sequence, and mix and stir at a rotation speed of 450 r / min and a temperature of 35 °C for 1.5 h to fully mix the components, thereby obtaining a mixed slurry. Pour the obtained mixed slurry into an extrusion device and extrude it into a film through the extrusion device, that is, obtain the halogenated blend modified polymer material layer;

[0032] S3. Laminating treatment: Select a clean warp-knitted fabric substrate and an aluminum foil layer respectively. Coat a layer of adhesive on the warp-knitted fabric substrate through a coating device, then laminate the aluminum foil layer onto the warp-knitted fabric substrate coated with the adhesive through a laminating device, and apply pressure for 7 minutes through a pressing device to completely bond the warp-knitted fabric substrate and the aluminum foil layer, thereby obtaining a composite layer;

[0033] S4. Embossing treatment: Heat and laminate the film of the halogenated blend modified polymer material layer obtained in step S2 onto the composite layer obtained in step S3, then perform embossing and cooling treatments, and then perform slitting treatment according to the required size through a slitting device. After the slitting is completed, a flame-retardant three-layer hot melt tape with good bonding performance is obtained. Finally, winding and packaging and quality inspection treatments are carried out in sequence.

[0034] Example 2

[0035] A flame-retardant three-layer hot melt tape with good bonding performance, comprising a layer of warp-knitted fabric substrate, a layer of aluminum foil layer and a layer of halogenated blend modified polymer material layer;

[0036] The halogenated blend modified polymer material layer comprises, by weight: 20 parts of elastic TPU hot melt adhesive, 10 parts of block saturated polyester resin with polyether branches, 5 parts of high-polymerization degree ammonium polyphosphate, 5 parts of halide, 5 parts of epoxy resin, 3 parts of tris-pentaerythritol, 3 parts of montmorillonite, 1 part of curing agent, 1 part of crosslinking agent, 1 part of antioxidant and 1 part of ultraviolet absorber. The halide is a composition of carbon tetrachloride and sulfur hexafluoride, the curing agent is dicyclohexylamine, and the crosslinking agent is benzoyl peroxide.

[0037] The embodiment of the present invention also provides a preparation method of a flame-retardant three-layer hot melt tape with good bonding performance, which specifically comprises the following steps:

[0038] S1. Batching treatment: First, weigh the required parts by weight of elastic TPU hot melt adhesive, block saturated polyester resin with polyether branches, high-polymerization degree ammonium polyphosphate, halide, epoxy resin, tris-pentaerythritol, montmorillonite, curing agent, crosslinking agent, antioxidant and ultraviolet absorber respectively through a weighing device for later use;

[0039] S2. Mixing and film forming: Pour the raw materials weighed in step S1 into a mixing and stirring device in sequence, mix and stir at a rotation speed of 300 r / min and a temperature of 30 °C for 1 h to fully mix the components, thereby obtaining a mixed slurry. Pour the obtained mixed slurry into an extrusion device and extrude it into a film through the extrusion device, thus obtaining a halogenated blend modified polymer material layer;

[0040] S3. Laminating treatment: Select a clean warp-knitted fabric substrate and an aluminum foil layer respectively. Coat a layer of adhesive on the warp-knitted fabric substrate through a coating device, then laminate the aluminum foil layer onto the warp-knitted fabric substrate coated with the adhesive through a laminating device, and apply pressure for 5 minutes through a pressing device to completely bond the warp-knitted fabric substrate and the aluminum foil layer, thereby obtaining a composite layer;

[0041] S4. Embossing treatment: Heat and laminate the film of the halogenated blend modified polymer material layer obtained in step S2 onto the composite layer obtained in step S3, then perform embossing and cooling treatments, and then perform slitting treatment according to the required size through a slitting device. After the slitting is completed, a flame-retardant three-layer hot melt tape with good bonding performance is obtained. Finally, winding packaging and quality inspection treatments are carried out in sequence.

[0042] Example 3

[0043] A flame-retardant three-layer hot melt tape with good bonding performance, comprising a layer of warp-knitted fabric substrate, a layer of aluminum foil layer and a layer of halogenated blend modified polymer material layer;

[0044] The halogenated blend modified polymer material layer comprises, by weight: 30 parts of elastic TPU hot melt adhesive, 20 parts of block saturated polyester resin with polyether branches, 10 parts of high-polymerization degree ammonium polyphosphate, 10 parts of halide, 10 parts of epoxy resin, 5 parts of tris-pentaerythritol, 5 parts of montmorillonite, 3 parts of curing agent, 3 parts of crosslinking agent, 3 parts of antioxidant and 3 parts of ultraviolet absorber. The halide is a composition of carbon tetrachloride and chlorine trifluoride, the curing agent is ethylenediamine, and the crosslinking agent is diisopropylbenzene peroxide.

[0045] The embodiment of the present invention also provides a preparation method of a flame-retardant three-layer hot melt tape with good bonding performance, which specifically comprises the following steps:

[0046] S1. Batching treatment: First, weigh the required parts by weight of elastic TPU hot melt adhesive, block saturated polyester resin with polyether branches, high-polymerization degree ammonium polyphosphate, halide, epoxy resin, tris-pentaerythritol, montmorillonite, curing agent, crosslinking agent, antioxidant and ultraviolet absorber respectively through a weighing device for standby;

[0047] S2. Mixing and film forming: Pour the raw materials weighed in step S1 into a mixing and stirring device in sequence, and mix and stir at a rotation speed of 600 r / min and a temperature of 40 °C for 2 hours to fully mix the components, thereby obtaining a mixed slurry. Pour the obtained mixed slurry into an extrusion device and extrude it into a film through the extrusion device, that is, a halogenated blend modified polymer material layer is prepared;

[0048] S3. Laminating treatment: Select a clean warp-knitted fabric substrate and an aluminum foil layer respectively. Coat a layer of adhesive on the warp-knitted fabric substrate through a coating device, then laminate the aluminum foil layer onto the warp-knitted fabric substrate coated with the adhesive through a laminating device, and apply pressure for 10 minutes through a pressing device to completely bond the warp-knitted fabric substrate and the aluminum foil layer, thereby obtaining a composite layer;

[0049] S4. Embossing treatment: Heat and laminate the film of the halogenated blend-modified polymer material layer obtained in step S2 onto the composite layer obtained in step S3, then perform embossing and cooling treatments, and then perform slitting treatment according to the required size through a slitting device. After the slitting is completed, a flame-retardant three-layer hot-melt tape with good bonding performance is obtained. Finally, winding packaging and quality inspection treatments are carried out in sequence.

[0050] In summary, in the present invention, by adding inorganic or organic flame retardants to the formula, reacting polymers with halogens to generate halogenated polymers, improving the flame resistance of polymers through blend modification, enhancing the flame resistance of materials by improving the resin matrix, using the principle that the thermal decomposition temperature of the polymer composite material is lower than the combustion temperature, and using the high molecular weight of the polymer material to achieve flame retardant treatment of the rubber compound. Then, by sandwiching an aluminum foil layer in the flame retardant layer, the aluminum foil has relatively good flame retardancy and high extensibility, which is in line with the actual use.

[0051] At the same time, the content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0052] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame retardant three-layer hot melt adhesive tape with good bonding performance, characterized in that: It comprises a warp knitted fabric substrate, an aluminum foil layer and a halogenated blended modified polymer material layer; The halogenated blended modified polymer material layer comprises, by weight: 20-30 parts of elastic TPU hot melt adhesive, 10-20 parts of block saturated polyester resin with polyether side chains, 5-10 parts of high polymerization degree ammonium polyphosphate, 5-10 parts of halide, 5-10 parts of epoxy resin, 3-5 parts of tri-pentaerythritol, 3-5 parts of montmorillonite, 1-3 parts of curing agent, 1-3 parts of cross-linking agent, 1-3 parts of antioxidant and 1-3 parts of ultraviolet absorber.

2. A flame retardant three-layer hot melt adhesive tape with good bonding performance according to claim 1, characterized in that: The halogenated blended modified polymer material layer includes, by weight: 25 parts of elastic TPU hot melt adhesive, 15 parts of block saturated polyester resin with polyether side chains, 7 parts of high-polymerization ammonium polyphosphate, 7 parts of halide, 7 parts of epoxy resin, 4 parts of tri-pentaerythritol, 4 parts of montmorillonite, 2 parts of curing agent, 2 parts of cross-linking agent, 2 parts of antioxidant and 2 parts of ultraviolet absorber.

3. The flame retardant three-layer hot melt adhesive tape with good bonding performance according to claim 1, characterized in that: The halogenated blended modified polymer material layer comprises, by weight: 20 parts of elastic TPU hot melt adhesive, 10 parts of block saturated polyester resin with polyether side chains, 5 parts of high-polymerization ammonium polyphosphate, 5 parts of halide, 5 parts of epoxy resin, 3 parts of tri-pentaerythritol, 3 parts of montmorillonite, 1 part of curing agent, 1 part of cross-linking agent, 1 part of antioxidant and 1 part of ultraviolet absorber.

4. The flame retardant three-layer hot melt adhesive tape with good bonding performance according to claim 1, characterized in that: The halogenated blended modified polymer material layer includes, by weight: 30 parts of elastic TPU hot melt adhesive, 20 parts of block saturated polyester resin with polyether side chains, 10 parts of high-polymerization ammonium polyphosphate, 10 parts of halide, 10 parts of epoxy resin, 5 parts of tri-pentaerythritol, 5 parts of montmorillonite, 3 parts of curing agent, 3 parts of cross-linking agent, 3 parts of antioxidant and 3 parts of ultraviolet absorber.

5. A flame retardant three-layer hot melt adhesive tape with good bonding performance according to any one of claims 1 to 4, characterized in that: The halide is any combination of two or more of carbon tetrachloride, sulfur hexafluoride or chlorine trifluoride.

6. A flame retardant three-layer hot melt adhesive tape with good bonding performance according to any one of claims 1 to 4, characterized in that: The curing agent is one of vinyltriamine, diaminocyclohexane or ethylenediamine.

7. A flame retardant three-layer hot melt adhesive tape with good bonding performance according to any one of claims 1 to 4, characterized in that: The cross-linking agent is one of dicumyl peroxide, benzoyl peroxide or dicumyl hydroperoxide.

8. A method for preparing the flame-retardant three-layer hot-melt adhesive tape with good bonding performance as claimed in any one of claims 1 to 4, characterized in that: The specific steps include: S1. Ingredient processing: first, the required weight portions of elastic TPU hot melt adhesive, block saturated polyester resin with polyether branches, high polymerization degree ammonium polyphosphate, halide, epoxy resin, tri-dipentaerythritol, montmorillonite, curing agent, cross-linking agent, antioxidant and ultraviolet absorber are measured by weighing equipment and set aside; S2, mixing and film forming: pouring the raw materials weighed in step S1 into a mixing and stirring device in turn, mixing and stirring for 1-2 hours at a speed of 300-600 r / min and a temperature of 30-40° C., so that the components are fully mixed, thereby preparing a mixed slurry, pouring the prepared mixed slurry into an extrusion device, and extruding the extrusion device into a film, that is, preparing a halogenated blended modified polymer material layer; S3, laminating treatment: respectively selecting a clean warp knitted fabric substrate and an aluminum foil layer, coating a layer of adhesive on the warp knitted fabric substrate by a coating device, and then laminating the aluminum foil layer to the warp knitted fabric substrate coated with the adhesive by a laminating device, and applying pressure by a pressurizing device for 5-10 minutes to completely bond the warp knitted fabric substrate and the aluminum foil layer, thereby obtaining a composite layer; S4, embossing treatment: the halogenated blended modified polymer material layer film obtained in step S2 is heated and bonded to the composite layer obtained in step S3, followed by embossing and cooling treatment, and then cut into pieces according to the required size by a cutting device. After the cutting is completed, a flame-retardant three-layer hot-melt tape with good bonding performance is obtained, and finally the tape is rolled up, packaged and quality inspected in sequence.

Images