TPU (Thermoplastic Polyurethane) high-low temperature film, excessive glue strip for clothing and preparation method of excessive glue strip

Abstract

The invention relates to the technical field of high and low temperature films and adhesive tapes, in particular to a TPU (thermoplastic polyurethane) high and low temperature film, an overflowed adhesive tape for clothing and a preparation method thereof, and the preparation method of the TPU high and low temperature film comprises the following steps: weighing the following raw materials in parts by weight: polyether type TPU resin, epoxidized soybean oil, a modified material based on high and low temperature functions, an auxiliary additive, calcium stearate and an ethylene-octylene copolymer elastomer POE; the preparation method comprises the following steps: uniformly blending the raw materials, carrying out extrusion molding by using an extruder at the extrusion temperature of 185 DEG C, and carrying out air cooling to room temperature to obtain the TPU high-low temperature film. According to the TPU high-low temperature film, the polyether type TPU resin and the epoxidized soybean oil are matched with the calcium stearate and the ethylene-octylene copolymer elastomer POE, meanwhile, the modified material based on the high-low temperature function and the auxiliary additive are added for blending, through co-matching enhancement of the raw materials, the flexibility, the waterproof performance and the air permeability of the obtained product are improved in a coordinated mode, and the high-low temperature film has the advantages of being good in waterproof performance and good in weather resistance. And the product has remarkable weather resistance and high and low temperature resistance stability effects.

Description

Technical Field

[0001] This invention relates to the field of high and low temperature films and adhesive strips, specifically to a TPU high and low temperature film, an adhesive strip for clothing, and a method for preparing the same. Background Technology

[0002] In the field of garment manufacturing, especially for functional clothing such as outdoor jackets and waterproof down jackets, the waterproof, windproof and sealing performance of the seams is crucial. Traditional sewing methods leave needle holes in the fabric, which makes it easy for rainwater and cold wind to penetrate, affecting the functionality of the garment.

[0003] Existing adhesive strips have poor flexibility. Improving flexibility often leads to a decrease in waterproofing and breathability, making it difficult to balance these three aspects. Furthermore, the products suffer from poor weather resistance and high / low temperature stability, limiting their usability. Therefore, it is necessary to develop an adhesive strip for clothing that combines flexibility, waterproofing, and breathability with its TPU high / low temperature film. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the purpose of this invention is to provide a TPU high and low temperature film, an adhesive strip for clothing, and a method for preparing the same, so as to solve the problems mentioned in the background art.

[0005] The present invention solves the technical problem by adopting the following technical solution: This invention provides a method for preparing a TPU high and low temperature film, comprising the following steps: Step 1: Weigh the raw materials according to the following weight parts: 45-55 parts polyether-type TPU resin, 5-10 parts epoxidized soybean oil, 5-8 parts modified material based on high and low temperature function, 4-7 parts additives, 3-5 parts calcium stearate and 2-4 parts ethylene-octene copolymer elastomer POE. Step 2: Mix the above raw materials evenly, then extrude them through an extruder at a temperature of 185°C, and then air-cool them to room temperature to obtain a TPU high and low temperature film.

[0006] Preferably, the relative molecular mass of the polyether-type TPU resin is 30,000-40,000.

[0007] Preferably, the preparation method of the modified material based on high and low temperature functions is as follows: S01: Add 3-5 parts by weight of silicon powder and 2-4 parts by weight of silicon carbide to 5-8 parts by weight of 5% dopamine hydrochloride solution, then add 1-3 parts by weight of carbon nanotubes, stir evenly to obtain the modified solution. S02: Mix 3-5 parts by weight of nano titanium dioxide, 2-4 parts by weight of zirconium oxide and 1-3 parts by weight of graphene agent evenly, and then heat treat at 200-230℃ for 1 hour to obtain heat treatment agent; S03: Heat the mica powder to 300℃ at a rate of 3-5℃ / min, keep it at that temperature for 1 hour, and then air cool it to room temperature to obtain pretreated mica powder; S04: Add the pretreated mica powder to the modification liquid and stir to modify it. After stirring, the modified mica agent is obtained. S05: Continue ball milling the modified mica agent and heat treatment agent. After ball milling, filter and dry to obtain the modified material based on high and low temperature functions.

[0008] Preferably, the mass ratio of pretreated mica powder to modified liquid is 3:(5-8); the mass ratio of modified mica agent to heat treatment agent is (3-5):7.

[0009] Preferably, the stirring speed for the stirring modification treatment is 450-500 r / min, and the stirring time is 1 h; the ball milling treatment is performed at a speed of 1050-1100 r / min for 2 h.

[0010] Preferably, the preparation method of the graphene agent is as follows: Graphene, glass fiber, and a 2-5% lanthanum nitrate solution were mixed evenly in a weight ratio of 3:2:4, then filtered and dried to obtain the graphene agent.

[0011] Preferably, the preparation method of the additive is as follows: S101: Nano silica, cerium oxide and sodium silicate solution with a mass fraction of 5-8% are mixed evenly in a weight ratio of 3:2:5 to obtain nano silica modified solution; S102: Mix 3-5 parts by weight of attapulgite powder, 2-4 parts by weight of calcium carbonate and 3-5 parts by weight to obtain a compounding agent; S103: Mix the compounding agent and the nano-silica modified liquid at a weight ratio of 5:7, then filter and dry to obtain the additive.

[0012] The present invention also provides a TPU high and low temperature film, which is prepared by the aforementioned method for preparing TPU high and low temperature film.

[0013] This invention also provides a method for preparing adhesive strips for clothing, using the aforementioned TPU high and low temperature film, comprising the following steps: S21. Two layers of TPU high and low temperature film are hot-pressed together to form a hot melt adhesive assembly. The hot-pressing temperature is 120-140℃, the pressure is 1MPa, and the time is 5min. S22. The hot melt adhesive group and the fabric group are laminated from top to bottom using a laminating machine. The laminating pressure is 5MPa, the laminating temperature is 125℃, and the laminating time is 1h to obtain the excess adhesive strip for clothing.

[0014] The present invention also provides an excess adhesive strip for clothing, which is prepared by the method for preparing the excess adhesive strip for clothing.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The TPU high and low temperature film of the present invention uses polyether-type TPU resin, epoxidized soybean oil, calcium stearate, and ethylene-octene copolymer elastomer POE. Modifiers and additives based on high and low temperature functions are added to the mixture. Through the co-mixing of raw materials, the product achieves coordinated improvement in flexibility, waterproof performance and breathability, and the product has significant effects on weather resistance and high and low temperature stability.

[0016] The modified material based on high and low temperature functions uses mica powder that has undergone thermal modification to optimize its activity. This is then combined with a modifying liquid for further modification. The modified liquid contains silicon powder, silicon carbide, carbon nanotubes, and dopamine hydrochloride solution. Through co-regulation of the raw materials, the high specific surface area carbon nanotubes and silicon powder are used to modify the mica powder, enhancing its functionality within the system. The heat treatment agent uses nano-titanium dioxide combined with zirconium oxide and graphene agent, which has also undergone thermal modification. The graphene agent contains graphene combined with glass fiber and lanthanum nitrate solution. Through co-regulation optimization of the raw materials, the resulting modified material based on high and low temperature functions further enhances the performance coordination and stability of the TPU high and low temperature film within the system.

[0017] The additives consist of tropite powder, calcium carbonate, and boron oxide, and are further improved by stirring with a nano-silica modified liquid. The nano-silica, cerium oxide, and sodium silicate solution in the nano-silica modified liquid are harmonized and synergistic, further enhancing the synergistic effect between the additives and the modified materials based on high and low temperature functions, thereby further improving the performance of the TPU high and low temperature film.

[0018] The adhesive strip of this invention uses a combination of a fabric assembly and a hot melt adhesive assembly. The hot melt adhesive assembly is composited with a TPU high and low temperature film. Through optimization and improvement of the TPU high and low temperature film, which uses polyether-type TPU resin, epoxidized soybean oil, calcium stearate, and ethylene-octene copolymer elastomer POE, and also incorporates modifiers and additives based on high and low temperature functions, the product achieves a coordinated improvement in flexibility, waterproof performance, and breathability through the co-mixing of raw materials, as well as significant improvement in weather resistance and high and low temperature stability. Attached Figure Description

[0019] Figure 1 This is a layered structure diagram of an adhesive strip for clothing according to the present invention.

[0020] In the diagram: 1. Fabric assembly; 11. Hot melt adhesive layer; 12. Waterproof coating; 13. Warp-knitted mesh fabric; 2. Hot melt adhesive assembly; 21. TPU high and low temperature film. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This embodiment describes a method for preparing a TPU high and low temperature film, comprising the following steps: Step 1: Weigh the raw materials according to the following weight parts: 45-55 parts polyether-type TPU resin, 5-10 parts epoxidized soybean oil, 5-8 parts modified material based on high and low temperature function, 4-7 parts additives, 3-5 parts calcium stearate and 2-4 parts ethylene-octene copolymer elastomer POE. Step 2: Mix the above raw materials evenly, then extrude them through an extruder at a temperature of 185°C, and then air-cool them to room temperature to obtain a TPU high and low temperature film.

[0023] The relative molecular mass of the polyether-type TPU resin in this embodiment is 30,000-40,000.

[0024] The preparation method of the modified material based on high and low temperature function in this embodiment is as follows: S01: Add 3-5 parts by weight of silicon powder and 2-4 parts by weight of silicon carbide to 5-8 parts by weight of 5% dopamine hydrochloride solution, then add 1-3 parts by weight of carbon nanotubes, stir evenly to obtain the modified solution. S02: Mix 3-5 parts by weight of nano titanium dioxide, 2-4 parts by weight of zirconium oxide and 1-3 parts by weight of graphene agent evenly, and then heat treat at 200-230℃ for 1 hour to obtain heat treatment agent; S03: Heat the mica powder to 300℃ at a rate of 3-5℃ / min, keep it at that temperature for 1 hour, and then air cool it to room temperature to obtain pretreated mica powder; S04: Add the pretreated mica powder to the modification liquid and stir to modify it. After stirring, the modified mica agent is obtained. S05: Continue ball milling the modified mica agent and heat treatment agent. After ball milling, filter and dry to obtain the modified material based on high and low temperature functions.

[0025] In this embodiment, the mass ratio of pretreated mica powder to modified liquid is 3:(5-8); the mass ratio of modified mica agent to heat treatment agent is (3-5):7.

[0026] In this embodiment, the stirring speed for the stirring modification treatment is 450-500 r / min, and the stirring time is 1 h; the ball milling treatment is performed at a speed of 1050-1100 r / min for 2 h.

[0027] The preparation method of the graphene agent in this embodiment is as follows: Graphene, glass fiber, and a 2-5% lanthanum nitrate solution were mixed evenly in a weight ratio of 3:2:4, then filtered and dried to obtain the graphene agent.

[0028] The preparation method of the additive in this embodiment is as follows: S101: Nano silica, cerium oxide and sodium silicate solution with a mass fraction of 5-8% are mixed evenly in a weight ratio of 3:2:5 to obtain nano silica modified solution; S102: Mix 3-5 parts of attapulgite powder, 2-4 parts of calcium carbonate and 3-5 parts of boron oxide evenly according to the weight ratio to obtain a compound modifier; stir the compound modifier and nano silica modified liquid at a weight ratio of 5:7, then filter and dry to obtain an additive.

[0029] This embodiment provides a TPU high and low temperature film, which is prepared by the aforementioned method for preparing TPU high and low temperature films.

[0030] like Figure 1 As shown, this embodiment describes a method for preparing an adhesive strip for clothing, using the aforementioned TPU high and low temperature film, including the following steps: S21. Two layers of TPU high and low temperature film 21 are hot-pressed together to form hot melt adhesive group 2. The hot-pressing temperature is 120-140℃, the pressure is 1MPa, and the time is 5min. S22. The hot melt adhesive group 2 and the fabric group 1 are laminated from top to bottom using a laminating machine. The laminating pressure is 5MPa, the laminating temperature is 125℃, and the laminating time is 1h to obtain an adhesive strip for clothing. Among them, the fabric group adopts the heat-sealing tape disclosed in the invention patent with patent number CN114854327A, that is, the fabric group 1 is composed of warp-knitted mesh fabric 13, waterproof coating 12 and hot melt adhesive layer 11 laminated from bottom to top.

[0031] This embodiment provides a garment adhesive strip for excess glue, which is prepared by the method described above.

[0032] Example 1: A method for preparing a TPU high and low temperature film, comprising the following steps: Step 1: Weigh the raw materials according to the following weight parts: 45 parts polyether-type TPU resin, 5 parts epoxidized soybean oil, 5 parts modifier based on high and low temperature function, 4 parts additives, 3 parts calcium stearate and 2 parts ethylene-octene copolymer elastomer POE. Step 2: Mix the above raw materials evenly, then extrude them through an extruder at a temperature of 185°C, and then air-cool them to room temperature to obtain a TPU high and low temperature film.

[0033] The polyether-type TPU resin in this embodiment has a relative molecular mass of 30,000.

[0034] The preparation method of the modified material based on high and low temperature function in this embodiment is as follows: S01: Add 3 parts by weight of silicon powder and 2 parts by weight of silicon carbide to 5 parts by weight of 5% dopamine hydrochloride solution, then add 1 part by weight of carbon nanotubes, stir evenly to obtain the modified solution. S02: Mix 3 parts by weight of nano titanium dioxide, 2 parts by weight of zirconium oxide and 1 part by weight of graphene agent evenly, and then heat treat at 200℃ for 1 hour to obtain heat treatment agent; S03: Heat the mica powder to 300℃ at a rate of 3℃ / min, keep it at that temperature for 1 hour, and then air cool it to room temperature to obtain pretreated mica powder; S04: Add the pretreated mica powder to the modification liquid and stir to modify it. After stirring, the modified mica agent is obtained. S05: Continue ball milling the modified mica agent and heat treatment agent. After ball milling, filter and dry to obtain the modified material based on high and low temperature functions.

[0035] In this embodiment, the mass ratio of pretreated mica powder to modified liquid is 3:5; the mass ratio of modified mica agent to heat treatment agent is 3:7.

[0036] In this embodiment, the stirring speed for the stirring modification treatment is 450 r / min, and the stirring time is 1 h; the ball milling treatment is performed at a ball milling speed of 1050 r / min for 2 h.

[0037] The preparation method of the graphene agent in this embodiment is as follows: Graphene, glass fiber, and a 2% lanthanum nitrate solution were mixed evenly in a weight ratio of 3:2:4, then filtered and dried to obtain the graphene agent.

[0038] The preparation method of the additive in this embodiment is as follows: S101: Nano silica, cerium oxide and sodium silicate solution with a mass fraction of 5% are mixed evenly in a weight ratio of 3:2:5 to obtain nano silica modified solution; S102: Mix 3 parts attapulgite powder, 2 parts calcium carbonate and 3 parts boron oxide evenly according to the weight to obtain a compounding agent; S103: Mix the compounding agent and the nano-silica modified liquid at a weight ratio of 5:7, then filter and dry to obtain the additive.

[0039] This embodiment provides a TPU high and low temperature film, which is prepared by the aforementioned method for preparing TPU high and low temperature films.

[0040] like Figure 1 As shown, this embodiment describes a method for preparing an adhesive strip for clothing, using the aforementioned TPU high and low temperature film, including the following steps: S21. Two layers of TPU high and low temperature film 21 are hot-pressed together to form hot melt adhesive group 2. The hot-pressing temperature is 120℃, the pressure is 1MPa, and the time is 5min. S22. The hot melt adhesive group 2 and the fabric group 1 are laminated from top to bottom using a laminating machine. The laminating pressure is 5MPa, the laminating temperature is 125℃, and the laminating time is 1h to obtain an adhesive strip for clothing. The fabric group uses the heat-sealing tape disclosed in Embodiment 1 of the invention patent with patent number CN114854327A. That is, the fabric group 1 is composed of warp-knitted mesh fabric 13, waterproof coating 12, and hot melt adhesive layer 11 laminated from bottom to top.

[0041] This embodiment provides a garment adhesive strip for excess glue, which is prepared by the method described above.

[0042] Example 2: A method for preparing a TPU high and low temperature film, comprising the following steps: Step 1: Weigh the raw materials according to the following weight parts: 55 parts polyether-type TPU resin, 10 parts epoxidized soybean oil, 8 parts modified material based on high and low temperature function, 7 parts additives, 5 parts calcium stearate and 4 parts ethylene-octene copolymer elastomer POE. Step 2: Mix the above raw materials evenly, then extrude them through an extruder at a temperature of 185°C, and then air-cool them to room temperature to obtain a TPU high and low temperature film.

[0043] The relative molecular mass of the polyether-type TPU resin in this embodiment is 40,000.

[0044] The preparation method of the modified material based on high and low temperature function in this embodiment is as follows: S01: Add 5 parts by weight of silicon powder and 4 parts by weight of silicon carbide to 8 parts by weight of 5% dopamine hydrochloride solution, then add 3 parts by weight of carbon nanotubes, stir evenly to obtain the modified solution. S02: Mix 5 parts by weight of nano titanium dioxide, 4 parts by weight of zirconium oxide and 3 parts by weight of graphene agent evenly, and then heat treat at 230℃ for 1 hour to obtain heat treatment agent; S03: Heat the mica powder to 300℃ at a rate of 5℃ / min, keep it at that temperature for 1 hour, and then air cool it to room temperature to obtain pretreated mica powder. S04: Add the pretreated mica powder to the modification liquid and stir to modify it. After stirring, the modified mica agent is obtained. S05: Continue ball milling the modified mica agent and heat treatment agent. After ball milling, filter and dry to obtain the modified material based on high and low temperature functions.

[0045] In this embodiment, the mass ratio of pretreated mica powder to modified liquid is 3:8; the mass ratio of modified mica agent to heat treatment agent is 5:7.

[0046] In this embodiment, the stirring speed for the stirring modification treatment is 500 r / min, and the stirring time is 1 h; the ball milling treatment is performed at a speed of 1100 r / min for 2 h.

[0047] The preparation method of the graphene agent in this embodiment is as follows: Graphene, glass fiber, and a 5% lanthanum nitrate solution were mixed evenly in a weight ratio of 3:2:4, then filtered and dried to obtain the graphene agent.

[0048] The preparation method of the additive in this embodiment is as follows: S101: Nano silica, cerium oxide and sodium silicate solution with a mass fraction of 8% are mixed evenly in a weight ratio of 3:2:5 to obtain nano silica modified solution; S102: Mix 5 parts of attapulgite powder, 4 parts of calcium carbonate and 5 parts of boron oxide evenly according to the weight ratio to obtain a compound modifier; stir the compound modifier and nano silica modified liquid at a weight ratio of 5:7, then filter and dry to obtain an additive.

[0049] This embodiment provides a TPU high and low temperature film, which is prepared by the aforementioned method for preparing TPU high and low temperature films.

[0050] like Figure 1 As shown, this embodiment describes a method for preparing an adhesive strip for clothing, using the aforementioned TPU high and low temperature film, including the following steps: S21. Two layers of TPU high and low temperature film 21 are hot-pressed together to form hot melt adhesive group 2. The hot-pressing temperature is 140℃, the pressure is 1MPa, and the time is 5min. S22. The hot melt adhesive group 2 and the fabric group 1 are laminated from top to bottom using a laminating machine. The laminating pressure is 5MPa, the laminating temperature is 125℃, and the laminating time is 1h to obtain an adhesive strip for clothing. The fabric group uses the heat-sealing tape disclosed in Embodiment 1 of the invention patent with patent number CN114854327A. That is, the fabric group 1 is composed of warp-knitted mesh fabric 13, waterproof coating 12, and hot melt adhesive layer 11 laminated from bottom to top.

[0051] This embodiment provides a garment adhesive strip for excess glue, which is prepared by the method described above.

[0052] Example 3: A method for preparing a TPU high and low temperature film, comprising the following steps: Step 1: Weigh the raw materials according to the following weight parts: 50 parts polyether-type TPU resin, 7.5 parts epoxidized soybean oil, 6.5 parts modifier based on high and low temperature function, 5.5 parts additives, 4 parts calcium stearate and 3 parts ethylene-octene copolymer elastomer POE; Step 2: Mix the above raw materials evenly, then extrude them through an extruder at a temperature of 185°C, and then air-cool them to room temperature to obtain a TPU high and low temperature film.

[0053] The relative molecular mass of the polyether-type TPU resin in this embodiment is 35,000.

[0054] The preparation method of the modified material based on high and low temperature function in this embodiment is as follows: S01: Add 4 parts by weight of silicon powder and 3 parts by weight of silicon carbide to 6.5 parts by weight of 5% dopamine hydrochloride solution, then add 2 parts by weight of carbon nanotubes, stir evenly to obtain the modified solution; S02: Mix 4 parts by weight of nano titanium dioxide, 3 parts by weight of zirconium oxide and 2 parts by weight of graphene agent evenly, and then heat treat at 215℃ for 1 hour to obtain heat treatment agent; S03: Heat the mica powder to 300℃ at a rate of 4℃ / min, keep it at that temperature for 1 hour, and then air cool it to room temperature to obtain pretreated mica powder; S04: Add the pretreated mica powder to the modification liquid and stir to modify it. After stirring, the modified mica agent is obtained. S05: Continue ball milling the modified mica agent and heat treatment agent. After ball milling, filter and dry to obtain the modified material based on high and low temperature functions.

[0055] In this embodiment, the mass ratio of pretreated mica powder to modified liquid is 3:6.5; the mass ratio of modified mica agent to heat treatment agent is 4:7.

[0056] In this embodiment, the stirring speed for the stirring modification treatment is 470 r / min, and the stirring time is 1 h; the ball milling treatment is performed at a speed of 1070 r / min for 2 h.

[0057] The preparation method of the graphene agent in this embodiment is as follows: Graphene, glass fiber, and a 3.5% lanthanum nitrate solution were mixed evenly in a weight ratio of 3:2:4, then filtered and dried.

[0058] The preparation method of the additive in this embodiment is as follows: S101: Nano silica, cerium oxide and sodium silicate solution are mixed evenly in a weight ratio of 3:2:5 to obtain nano silica modified solution; S102: Mix 4 parts by weight of attapulgite powder, 3 parts by weight of calcium carbonate and 4 parts by weight to obtain a compounding agent; S103: Mix the compounding agent and the nano-silica modified liquid at a weight ratio of 5:7, then filter and dry to obtain the additive.

[0059] The sodium silicate solution in this embodiment has a mass fraction of 6.5%.

[0060] This embodiment provides a TPU high and low temperature film, which is prepared by the aforementioned method for preparing TPU high and low temperature films.

[0061] like Figure 1 As shown, this embodiment describes a method for preparing an adhesive strip for clothing, using the aforementioned TPU high and low temperature film, including the following steps: S21. Two layers of TPU high and low temperature film 21 are hot-pressed together to form hot melt adhesive group 2. The hot-pressing temperature is 130℃, the pressure is 1MPa, and the time is 5min. S22. The hot melt adhesive group 2 and the fabric group 1 are laminated from top to bottom using a laminating machine. The laminating pressure is 5MPa, the laminating temperature is 125℃, and the laminating time is 1h to obtain an adhesive strip for clothing. The fabric group uses the heat-sealing tape disclosed in Embodiment 1 of the invention patent with patent number CN114854327A. That is, the fabric group 1 is composed of warp-knitted mesh fabric 13, waterproof coating 12, and hot melt adhesive layer 11 laminated from bottom to top.

[0062] This embodiment provides a garment adhesive strip for excess glue, which is prepared by the method described above.

[0063] Comparative Example 1: Unlike Example 3, no modified material based on high and low temperature functions was added.

[0064] Comparative Example 2: Unlike Example 3, in the preparation of the modified material based on high and low temperature function, the pretreated mica powder was not treated with the modified liquid.

[0065] Comparative Example 3: Unlike Example 3, no silicon powder or silicon carbide was added to the modified liquid.

[0066] Comparative Example 4: Unlike Example 3, carbon nanotubes were not added to the modified solution, and water was used instead of dopamine hydrochloride solution.

[0067] Comparative Example 5: Unlike Example 3, in the preparation of the modified material based on high and low temperature function, the pretreated mica powder was not treated with a heat treatment agent.

[0068] Comparative Example 6: Unlike Example 3, nano-titanium dioxide and zirconium oxide were not added to the heat treatment agent.

[0069] Comparative Example 7: Unlike Example 3, no graphene agent was added to the heat treatment agent.

[0070] Comparative Example 8: Unlike Example 3, no graphene or glass fiber was added during the preparation of the graphene agent.

[0071] Comparative Example 9: Unlike Example 3, no additives were added.

[0072] Comparative Example 10: Unlike Example 3, no compounding agent was added in the preparation of the additives.

[0073] Comparative Example 11: Unlike Example 3, no attapulgite powder or calcium carbonate was added to the compounding agent.

[0074] Comparative Example 12: Unlike Example 3, no nano-silica modified liquid was added in the preparation of the additive.

[0075] Comparative Example 13: Unlike Example 3, no nano-silica or cerium oxide was added to the nano-silica modified liquid.

[0076] The clothing adhesive strips from Examples 1-3 and Comparative Examples 1-13 were tested for flexibility, waterproofing, and breathability under normal conditions and under weathering and high / low temperature conditions. Weathering and high / low temperature conditions involved applying the product at 200 W / m². 2 Irradiation at ultraviolet intensity for 1 hour, followed by treatment at 75℃ for 12 hours, and then treatment at -5℃ for 12 hours constitutes one cycle. The cycle is repeated 10 times. The performance measurement results are shown in Table 1.

[0077] Table 1. Performance test results of the adhesive strips for clothing in Examples 1-3 and Comparative Examples 1-13:

[0078] From Examples 1-3 and Comparative Examples 1-13, it can be seen that the clothing adhesive strip product of Example 3 of the present invention can achieve coordinated improvement in water pressure resistance, breathability and flexibility, and the product has excellent performance stability under weathering and high and low temperature conditions. If neither the high-low temperature modifier nor the additive is added to the TPU high-low temperature film, the product's performance will deteriorate significantly. By combining the two, the product's performance coordination and stability can be significantly improved. In the preparation of modified materials based on high and low temperature functions, the pretreated mica powder was not treated with a modification liquid, and no silicon powder or silicon carbide was added to the modification liquid. Carbon nanotubes were not added to the modification liquid, and water was used instead of dopamine hydrochloride solution. In the preparation of modified materials based on high and low temperature functions, the pretreated mica powder was not treated with a heat treatment agent, and no nano-titanium dioxide or zirconium oxide was added to the heat treatment agent. No graphene agent was added to the heat treatment agent, and no graphene or glass fiber was added in the preparation of the graphene agent. The performance of the products all showed a trend of deterioration to varying degrees. The pretreated mica powder, which is improved by using the heat treatment agent obtained by the specific method of this invention and the modified liquid obtained by the specific method, has the most significant performance effect. Only the modified material based on high and low temperature function obtained by the specific process of this invention has the most obvious performance effect. Other methods are not as good as the technical solution of this invention. Furthermore, the inventors of this invention have also discovered that the graphene agent obtained using the specific method of this invention also has an enhancing effect on the performance of the product; In the preparation of additives without the addition of a compounding agent, without the addition of attapulgite powder and calcium carbonate, and without the addition of nano-silica modification liquid, and without the addition of nano-silica and cerium oxide, the performance of the products all tend to deteriorate to varying degrees. The additives prepared by combining the compounding agent obtained by the specific method of this invention with the nano-silica modification liquid have the most significant performance effect. The performance of the products prepared by using other methods to replace the additives is not as obvious as that of this invention.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0080] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for preparing a TPU high and low temperature film, characterized in that, Includes the following steps: Step 1: Weigh the raw materials according to the following weight parts: 45-55 parts polyether-type TPU resin, 5-10 parts epoxidized soybean oil, 5-8 parts modified material based on high and low temperature function, 4-7 parts additives, 3-5 parts calcium stearate and 2-4 parts ethylene-octene copolymer elastomer POE. Step 2: Mix the above raw materials evenly, then extrude them through an extruder at a temperature of 185°C, and then air-cool them to room temperature to obtain a TPU high and low temperature film.

2. The method for preparing the TPU high and low temperature film according to claim 1, characterized in that, The relative molecular mass of polyether-type TPU resin is 30,000-40,000.

3. The method for preparing the TPU high and low temperature film according to claim 1, characterized in that, The preparation method of the modified material based on high and low temperature functions is as follows: S01: Add 3-5 parts by weight of silicon powder and 2-4 parts by weight of silicon carbide to 5-8 parts by weight of 5% dopamine hydrochloride solution, then add 1-3 parts by weight of carbon nanotubes, stir evenly to obtain the modified solution. S02: Mix 3-5 parts by weight of nano titanium dioxide, 2-4 parts by weight of zirconium oxide and 1-3 parts by weight of graphene agent evenly, and then heat treat at 200-230℃ for 1 hour to obtain heat treatment agent; S03: Heat the mica powder to 300℃ at a rate of 3-5℃ / min, keep it at that temperature for 1 hour, and then air cool it to room temperature to obtain pretreated mica powder; S04: Add the pretreated mica powder to the modification liquid and stir to modify it. After stirring, the modified mica agent is obtained. S05: Continue ball milling the modified mica agent and heat treatment agent. After ball milling, filter and dry to obtain the modified material based on high and low temperature functions.

4. The method for preparing the TPU high and low temperature film according to claim 3, characterized in that, The mass ratio of pretreated mica powder to modified liquid is 3:(5-8); the mass ratio of modified mica agent to heat treatment agent is (3-5):

7.

5. The method for preparing the TPU high and low temperature film according to claim 3, characterized in that, The stirring speed for the stirring modification treatment was 450-500 r / min, and the stirring time was 1 h; the ball milling treatment was performed at a ball milling speed of 1050-1100 r / min for 2 h.

6. The method for preparing the TPU high and low temperature film according to claim 3, characterized in that, The preparation method of graphene agent is as follows: Graphene, glass fiber, and a 2-5% lanthanum nitrate solution were mixed evenly in a weight ratio of 3:2:4, then filtered and dried to obtain the graphene agent.

7. The method for preparing the TPU high and low temperature film according to claim 1, characterized in that, The preparation method of the additive is as follows: S101: Nano silica, cerium oxide and sodium silicate solution with a mass fraction of 5-8% are mixed evenly in a weight ratio of 3:2:5 to obtain nano silica modified solution; S102: Mix 3-5 parts by weight of attapulgite powder, 2-4 parts by weight of calcium carbonate and 3-5 parts by weight to obtain a compounding agent; S103: Mix the compounding agent and the nano-silica modified liquid at a weight ratio of 5:7, then filter and dry to obtain the additive.

8. A TPU high and low temperature film, prepared by the method for preparing a TPU high and low temperature film as described in any one of claims 1 to 7.

9. A method for preparing adhesive strips for clothing, using the TPU high and low temperature film as described in claim 8, characterized in that, Includes the following steps: S21. Two layers of TPU high and low temperature film are hot-pressed together to form a hot melt adhesive assembly. The hot-pressing temperature is 120-140℃, the pressure is 1MPa, and the time is 5min. S22. The hot melt adhesive group and the fabric group are laminated from top to bottom using a laminating machine. The laminating pressure is 5MPa, the laminating temperature is 125℃, and the laminating time is 1h to obtain the excess adhesive strip for clothing.

10. An adhesive strip for clothing, prepared by the method for preparing an adhesive strip for clothing as described in claim 9.

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