An amorphous adhesive tape, its manufacturing method and application

Abstract

This invention relates to an amorphous adhesive tape, its manufacturing method, and its applications. The amorphous adhesive tape comprises at least two layers of stacked amorphous alloy strips; an adhesive layer is disposed between adjacent layers of amorphous alloy strips; and the radius of curvature of the amorphous adhesive tape is ≥95mm. The amorphous adhesive tape provided by this invention achieves the fabrication of an amorphous adhesive tape with spacers as intervals during the manufacturing process. Therefore, the amorphous adhesive tape of this invention is easy to manufacture and suitable for industrial production. Furthermore, the amorphous adhesive tape of this invention has a radius of curvature ≥95mm, which allows it to be sold in rolls without affecting its performance, and the adhesive layer is less prone to cracking during storage and transportation. Moreover, the amorphous adhesive tape can be used for stamping or sheet forming, effectively solving the problem of excessively thin sheets in the stamping process of amorphous alloys.

Description

Technical Field

[0001] This invention belongs to the field of amorphous alloy technology, and relates to a method for manufacturing an adhesive tape, particularly an amorphous adhesive tape, its manufacturing method, and its application. Background Technology

[0002] Amorphous alloys possess excellent electromagnetic properties, characterized by high permeability and low iron loss, and are widely used in transformers and instrument transformers. In these applications, amorphous alloys used for iron cores are typically toroidal or near-toroidal, and are often formed by winding. For iron cores in motor stators, motor rotors, and sensors, which cannot be formed by winding, lamination processing is required.

[0003] The difficulty in stamping amorphous alloy materials mainly stems from the thickness of the amorphous strip. Amorphous alloy materials are formed by high-temperature molten alloying and spinning through a single-roll cooling method. Due to the characteristics of the material and the manufacturing process, the thickness of amorphous alloys is generally 10-50μm, while the thickness of commonly used silicon steel sheets is about 0.2-0.5mm. Therefore, to produce laminated cores of the same thickness, the number of amorphous laminations required is 4-20 times that of silicon steel sheets, which greatly reduces production efficiency and increases production costs.

[0004] In addition, the thinness of amorphous alloys also affects stamping costs. For example, the gap between the convex and concave dies in a stamping die is generally about 10% of the sheet thickness. For thin amorphous materials, the die gap needs to be set at 1-5μm. A small gap means that higher die processing precision and stamping precision are required, which increases the cost of stamping on the one hand; on the other hand, it also accelerates punch wear, reduces punch life, and increases the cost of stamping.

[0005] Furthermore, amorphous alloys are thinner and have lower rigidity, making them unsuitable for feeding using the same methods as silicon steel, thus increasing the difficulty and cost of stamping. Because of their thinness and low rigidity, amorphous alloy strips tend to adhere to the die, affecting feeding and blanking processes. Therefore, to reduce the cost of stamping amorphous alloy sheets, it is necessary to increase the thickness of the amorphous alloy stamping sheet.

[0006] Methods for stacking strips into plates of considerable thickness include riveting, welding, and bonding. Since amorphous alloys are brittle materials with poor ductility, riveting is not feasible. Welding connects adjacent strips through weld points, resulting in a strong bond near the weld points. However, areas without weld points lack interlayer bonding, leading to misalignment and material skipping during stamping, thus affecting stamping quality. Bonding is one of the effective methods for stacking amorphous alloy strips into thick plates.

[0007] Typically, multilayer adhesive tape is manufactured using an online straight-line bonding process. This process requires large equipment footprints, has low production efficiency, and results in high production costs. Furthermore, online bonding tapes are straight and without curvature. After winding, the bending effect causes differences in the deformation of each layer, making the interlayer adhesive susceptible to stress and damage. Consequently, interlayer cracking is prone to occur during storage and transportation.

[0008] Therefore, providing an amorphous multilayer adhesive tape based on bonding that is easy to store and transport for long periods of time, as well as its preparation method and application, is of great significance for reducing the cost of stamping amorphous alloys and improving the stamping accuracy and efficiency of amorphous alloys. Summary of the Invention

[0009] The purpose of this invention is to provide an amorphous adhesive tape, its manufacturing method, and its application, particularly an amorphous adhesive tape that is easy to store and transport for long periods, its preparation method, and its application. The manufacturing method of this invention is simple and can reduce the manufacturing cost of the amorphous adhesive tape. Moreover, the resulting amorphous adhesive tape has a certain radius of curvature and can be sold in rolls without affecting its performance. At the same time, the adhesive layer is not easy to crack during storage and transportation. The resulting amorphous adhesive tape can be used for stamping or sheet forming.

[0010] To achieve this objective, the present invention adopts the following technical solution:

[0011] In a first aspect, the present invention provides an amorphous adhesive tape, the amorphous adhesive tape comprising at least two layers of stacked amorphous alloy tape;

[0012] An adhesive layer is placed between two adjacent layers of amorphous alloy strip;

[0013] The radius of curvature of the amorphous adhesive tape is ≥95mm.

[0014] The adhesive layer described in this invention is a conventional adhesive layer for bonding two adjacent layers of amorphous alloy strips. For example, the material of the adhesive layer includes, but is not limited to, epoxy resin, silicone, or acrylic resin.

[0015] The amorphous adhesive tape provided by this invention, through the setting of interlayers during the manufacturing process, achieves the fabrication of an amorphous adhesive tape with interlayers as spacing. Therefore, the amorphous adhesive tape of this invention has the property of being easy to prepare and is suitable for industrial production. In addition, the amorphous adhesive tape of this invention has a radius of curvature of ≥95mm, which allows it to be sold in rolls without affecting the performance of the amorphous adhesive tape, and at the same time, the adhesive layer is not easy to crack during storage and transportation.

[0016] The amorphous alloy strip in the amorphous adhesive tape of the present invention has at least 2 layers, for example, 2, 4, 5, 8, 10, 15 or 20 layers, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0017] The radius of curvature of the amorphous adhesive tape of the present invention is ≥95mm, for example, it can be 95mm, 100mm, 120mm, 150mm, 180mm, 200mm, 250mm, 300mm, 350mm or 400mm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, preferably ≥150mm.

[0018] Preferably, the stacking factor of the amorphous adhesive tape is 65-97%, and more preferably 80-95%.

[0019] The stacking factor of the amorphous adhesive tape described in this invention only needs to be 65-97%, for example, it can be 65%, 70%, 75%, 80%, 85%, 90%, 95% or 97%, but is not limited to the listed values, and other unlisted values ​​within the range are also applicable. Considering equipment adjustment, the stacking of the tape itself and the actual application scenario, the stacking factor of the amorphous adhesive tape is preferably 80-95%.

[0020] Preferably, the amorphous adhesive tape comprises 2-20 layers of amorphous alloy tape, for example, 2, 4, 5, 8, 10, 12, 15, 18 or 20 layers, but is not limited to the listed values, and other unlisted values ​​within the range are also applicable.

[0021] Preferably, the thickness of each layer of amorphous alloy strip is 10-50 μm, for example, it can be 10 μm, 15 μm, 20 μm, 25 μm, 28 μm, 30 μm, 35 μm, 40 μm or 50 μm, but is not limited to the listed values, and other unlisted values ​​within the range are also applicable.

[0022] Preferably, the width of each layer of amorphous alloy strip is 5-300mm, for example, it can be 5mm, 10mm, 20mm, 30mm, 60mm, 120mm, 142mm, 170mm, 213mm, 240mm or 300mm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0023] In a second aspect, the present invention provides a method for manufacturing the amorphous adhesive tape described in the first aspect, the method comprising the following steps:

[0024] (1) Amorphous alloy strips are wound together. During the winding process, interlayers are set according to the number of layers of amorphous alloy strips in the required amorphous adhesive tape to obtain the wound material.

[0025] (2) Impregnate and cure the composite material to obtain an adhesive tape roll with a separator;

[0026] (3) The adhesive tape roll with the separator is split into smaller rolls to obtain amorphous adhesive tape.

[0027] The manufacturing method provided by this invention, through the setting of interlayers, enables the preparation of amorphous adhesive tapes with interlayers as the spacers. Since the interlayers do not adhere to the impregnating adhesive, the manufacturing method is simple, and the number of layers of amorphous alloy strip in each amorphous adhesive tape can be reasonably set according to process requirements. The manufacturing method significantly reduces the manufacturing cost of amorphous adhesive tapes, and the final amorphous adhesive tapes can be used for stamping or sheet forming, successfully solving the problem of excessively thin sheet metal in the amorphous alloy stamping process.

[0028] Moreover, unlike the planar amorphous adhesive tapes in the prior art, the amorphous adhesive tapes produced by the manufacturing method of the present invention have a radius of curvature of ≥95mm, can be sold in whole rolls, and the adhesive layer is not easy to crack during storage and transportation, without affecting the performance of the final amorphous adhesive tape.

[0029] During the winding process, there is a length difference between the layers of amorphous alloy strip. After winding, there is still a length difference between the upper and lower layers of the resulting amorphous adhesive tape. Therefore, the final amorphous adhesive tape has a certain curvature. Considering the initial roll diameter during winding, the radius of curvature of the resulting amorphous adhesive tape should be ≥95mm. For example, it can be 95mm, 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, 400mm, or 500mm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, with ≥150mm being the preferred value.

[0030] Preferably, the material of the partition in step (1) includes, but is not limited to, a release agent, a polytetrafluoroethylene film, or a single-layer amorphous alloy strip coated with a release agent on both sides.

[0031] When the material of the interlayer in step (1) of the present invention is a release agent, the release agent is coated on the contact surface of two adjacent groups of amorphous alloy strips to form a release agent interlayer.

[0032] When the material of the partition in step (1) of the present invention is polytetrafluoroethylene film, during the winding process, the number of polytetrafluoroethylene film layers in the partition is at least 1 layer, for example, it can be 1 layer, 2 layers, 3 layers, 4 layers or 5 layers, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0033] Preferably, when the material of the interlayer in step (1) is a release agent, the thickness of the interlayer is ≤50μm, for example, it can be 0.2μm, 1μm, 5μm, 10μm, 15μm, 20μm, 25μm, 30μm, 35μm, 40μm, 45μm or 50μm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0034] Preferably, when the material of the partition in step (1) is a polytetrafluoroethylene film, the thickness of the partition is 0.05-0.2 mm, for example, it can be 0.05 mm, 0.1 mm, 0.12 mm, 0.15 mm or 0.2 mm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0035] Preferably, when the material of the partition in step (1) is a single-layer amorphous alloy strip coated with a release agent on both sides, the thickness of the partition is 10-100μm, for example, it can be 10μm, 20μm, 40μm, 50μm, 60μm, 80μm or 100μm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0036] Preferably, when the material of the partition is a polytetrafluoroethylene film and / or a single-layer amorphous alloy strip coated with a release agent on both sides, the partition is recycled during the slitting process in step (3) so that it can be reused.

[0037] Preferably, the impregnating adhesive used in step (2) includes, but is not limited to, epoxy resin, silicone or acrylic resin.

[0038] After impregnation and curing, some cured impregnating adhesive will remain on the surface of the amorphous adhesive tape. The proportion of the remaining impregnating adhesive to the surface area of ​​the multilayer adhesive tape is called the impregnating adhesive residue rate. When the winding tension during winding is high, the separator and the amorphous adhesive tape are tightly bonded, and the impregnating adhesive residue rate is 0%. When the winding tension is low, there is a large gap between the separator and the amorphous adhesive tape, and the impregnating adhesive residue rate is 100%. Considering the feasibility of the winding process and the fact that the remaining impregnating adhesive is beneficial for the bonding and stacking of the amorphous adhesive tape, as a preferred technical solution, the impregnating adhesive residue rate of the amorphous adhesive tape is 40-100%, for example, 40%, 50%, 60%, 70%, 80%, 90%, or 100%, but not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0039] Thirdly, the present invention provides an application of the amorphous adhesive tape as described in the first aspect, the amorphous adhesive tape being used for stamping or sheet forming.

[0040] Fourthly, the present invention provides an amorphous adhesive tape roll, which is obtained by rolling the amorphous adhesive tape described in the first aspect.

[0041] Preferably, the inner radius of the amorphous adhesive tape roll is ≥95mm, for example, it can be 95mm, 100mm, 120mm, 150mm, 180mm, 200mm, 250mm, 300mm, 350mm or 400mm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable, preferably ≥150mm.

[0042] Preferably, the width of the amorphous adhesive tape roll is 5-300mm, for example, it can be 5mm, 10mm, 20mm, 30mm, 60mm, 120mm, 142mm, 170mm, 213mm, 240mm or 300mm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0043] Preferably, the amorphous adhesive tape roll comprises 2-20 layers of amorphous adhesive tape stacked together, for example, it can be 2 layers, 4 layers, 5 layers, 8 layers, 10 layers, 12 layers, 15 layers, 18 layers or 20 layers, but is not limited to the listed values, and other unlisted values ​​within the range are also applicable.

[0044] Preferably, the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.02-1.6 mm, for example, it can be 0.02 mm, 0.1 mm, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm or 1.6 mm, but is not limited to the listed values. Other unlisted values ​​within the range are also applicable.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] (1) The amorphous adhesive tape provided by the present invention, through the setting of the interlayer, realizes the production of amorphous adhesive tape with the interlayer as the interval. Therefore, the amorphous adhesive tape of the present invention has the property of being easy to prepare and is suitable for industrial production. In addition, the amorphous adhesive tape of the present invention has a radius of curvature of ≥95mm, which can be sold in whole rolls without affecting the performance of the amorphous adhesive tape, and the adhesive layer is not easy to crack during storage and transportation.

[0047] (2) The manufacturing method provided by the present invention, by setting the partition layer, since the partition layer and the impregnating adhesive do not bond, can realize the preparation of amorphous adhesive tape with the partition layer as the interval; the final amorphous adhesive tape can be used for stamping or sheet forming, which successfully solves the problem of the sheet being too thin in the stamping process of amorphous alloy;

[0048] (3) Unlike the online multi-layer lamination and simultaneous adhesive bonding process, the present invention separates the multi-layer lamination (or roll-up) process from the adhesive bonding and curing process. Multi-layer lamination (or roll-up) can be carried out separately, and adhesive bonding and curing can be carried out separately, which greatly reduces the equipment and process difficulty caused by process coupling and reduces the cost of equipment and process execution.

[0049] (4) This invention diversifies the process of multi-layer winding and can be designed separately for different process steps;

[0050] (5) This invention reduces the requirements for adhesive bonding and curing processes, and greatly reduces adhesive costs and bonding and curing costs;

[0051] (6) This invention reduces the difficulty of equipment design, improves production efficiency, is easy to operate and implement, and is easy to mass-produce. Attached Figure Description

[0052] Figure 1 A schematic diagram of the winding process provided in Example 1;

[0053] Figure 2 A schematic diagram of the winding process provided in Example 4;

[0054] Figure 3 This is a schematic diagram of the stamped sheet obtained by stamping the amorphous adhesive tape obtained in Example 1. Detailed Implementation

[0055] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0056] Example 1

[0057] This embodiment provides an amorphous adhesive tape with a radius of curvature of 300 mm, a stacking factor of 89%, and an impregnation residue rate of 49%.

[0058] The method for manufacturing the amorphous adhesive tape includes the following steps:

[0059] (1) Amorphous alloy strips are coiled (see...) Figure 1 The process involves obtaining a coiled material; a spacer is provided between two adjacent groups of amorphous alloy strips; the initial coil diameter is 600 mm; the spacer is a 0.1 mm thick polytetrafluoroethylene film; the width of the amorphous alloy strip is 25 mm; and each group of amorphous alloy strips has 8 layers.

[0060] (2) Impregnate and cure the composite material, and then roll the resulting adhesive tape product into separate rolls to obtain the amorphous adhesive tape; each piece of the amorphous adhesive tape has 8 layers of amorphous alloy strip; the impregnation adhesive used includes epoxy impregnation varnish; the interlayer is recycled during roll-out.

[0061] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the die. The punching process is smooth. The structural diagram of the resulting stamped sheet is shown below. Figure 3 As shown.

[0062] Example 2

[0063] This embodiment provides an amorphous adhesive tape with a radius of curvature of 500 mm, a stacking factor of 88%, and an impregnation residue rate of 46%.

[0064] The method for manufacturing the amorphous adhesive tape is the same as in Example 1, except that the initial roll diameter is 1000 mm.

[0065] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the stamping die, which allows for smooth stamping.

[0066] Example 3

[0067] This embodiment provides an amorphous adhesive tape with a radius of curvature of 800 mm, a stacking factor of 88%, and an impregnation residue rate of 45%.

[0068] The method for manufacturing the amorphous adhesive tape is the same as in Example 1, except that the initial roll diameter is 1600 mm.

[0069] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the stamping die, which allows for smooth stamping.

[0070] Example 4

[0071] This embodiment provides an amorphous adhesive tape with a radius of curvature of 500 mm, a stacking factor of 89%, and an impregnation residue rate of 51%.

[0072] The method for manufacturing the amorphous adhesive tape includes the following steps:

[0073] (1) Amorphous alloy strips are coiled (see...) Figure 2 The process involves obtaining a coiled material; a spacer is provided between two adjacent groups of amorphous alloy strips; the initial coil diameter is 1000 mm; the spacer is a release agent; the release agent thickness is 10 μm; the width of the amorphous alloy strip is 120 mm; and each group of amorphous alloy strips has 8 layers.

[0074] (2) Impregnate and cure the composite material, and then roll the resulting adhesive tape product into separate rolls to obtain the amorphous adhesive tape; each piece of the amorphous adhesive tape contains 8 layers of amorphous alloy strip; the impregnation adhesive used includes epoxy impregnation varnish.

[0075] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the stamping die, which allows for smooth stamping.

[0076] Example 5

[0077] This embodiment provides an amorphous adhesive tape. Except for changing the winding tension to make the stacking factor of the amorphous adhesive tape 93% and the impregnation residue rate 40%, everything else is the same as in Embodiment 1.

[0078] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the stamping die, which allows for smooth stamping.

[0079] Example 6

[0080] This embodiment provides an amorphous adhesive tape. Except for changing the winding tension to make the stacking factor of the amorphous adhesive tape 89% and the impregnation residue rate 60%, everything else is the same as in Embodiment 1.

[0081] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the stamping die, which allows for smooth stamping.

[0082] Example 7

[0083] This embodiment provides an amorphous adhesive tape. Except for changing the winding tension to make the stacking factor of the amorphous adhesive tape 65%, everything else is the same as in Embodiment 1.

[0084] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch, which allows for smooth punching. The amorphous adhesive tape has a low stacking factor, and due to the thick adhesive layer, there is a risk of cracking during the punching process.

[0085] Example 8

[0086] This embodiment provides an amorphous adhesive tape, which is the same as that in Embodiment 1 except that each amorphous alloy tape has 5 layers.

[0087] The amorphous adhesive tape obtained in this embodiment has a stacking factor of 89%, a radius of curvature of 300 mm, and a residual impregnation rate of 46%.

[0088] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the stamping die, which allows for smooth stamping.

[0089] Example 9

[0090] This embodiment provides a method for manufacturing an amorphous adhesive tape. Except that each amorphous alloy tape has 5 layers, the rest is the same as in Embodiment 1.

[0091] The amorphous adhesive tape obtained in this embodiment has a stacking factor of 90%, a radius of curvature of 500 mm, and a residual impregnation rate of 45%.

[0092] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a tungsten carbide punch as the stamping die, which allows for smooth stamping.

[0093] Example 10

[0094] This embodiment provides an amorphous adhesive tape with a radius of curvature of 150 mm, a stacking factor of 89%, and an impregnation residue rate of 49%.

[0095] The method for manufacturing the amorphous adhesive tape includes the following steps:

[0096] (1) Amorphous alloy strips are coiled (see...) Figure 1 The process involves obtaining a coiled material; a spacer is provided between two adjacent groups of amorphous alloy strips; the initial coil diameter is 300 mm; the spacer is a 0.1 mm thick polytetrafluoroethylene film; the width of the amorphous alloy strip is 25 mm; and each group of amorphous alloy strips has 8 layers.

[0097] (2) Impregnate and cure the composite material, and then roll the resulting adhesive tape product into separate rolls to obtain the amorphous adhesive tape; each piece of the amorphous adhesive tape has 8 layers of amorphous alloy strip; the impregnation adhesive used includes epoxy impregnation varnish; the interlayer is recycled during roll-out.

[0098] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0099] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 150 mm and a width of 25 mm. It includes 5 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.4 mm.

[0100] Example 11

[0101] This embodiment provides an amorphous adhesive tape with a radius of curvature of 250 mm, a stacking factor of 88%, and an impregnation residue rate of 46%.

[0102] The method for manufacturing the amorphous adhesive tape is the same as in Example 10, except that the initial roll diameter is 500 mm.

[0103] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0104] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 250 mm and a width of 25 mm. It includes 5 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.4 mm.

[0105] Example 12

[0106] This embodiment provides an amorphous adhesive tape with a radius of curvature of 400 mm, a stacking factor of 88%, and an impregnation residue rate of 45%.

[0107] The method for manufacturing the amorphous adhesive tape is the same as in Example 10, except that the initial roll diameter is 800 mm.

[0108] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0109] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 400 mm and a width of 25 mm. It includes 10 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.8 mm.

[0110] Example 13

[0111] This embodiment provides an amorphous adhesive tape with a radius of curvature of 250 mm, a stacking factor of 89%, and an impregnation residue rate of 51%.

[0112] The method for manufacturing the amorphous adhesive tape includes the following steps:

[0113] (1) Amorphous alloy strips are coiled (see...) Figure 2 The process involves obtaining a coiled material; a spacer is provided between two adjacent groups of amorphous alloy strips; the initial coil diameter is 500 mm; the spacer is a release agent; the release agent thickness is 10 μm; the width of the amorphous alloy strip is 120 mm; and each group of amorphous alloy strips has 8 layers.

[0114] (2) Impregnate and cure the composite material, and then roll the resulting adhesive tape product into separate rolls to obtain the amorphous adhesive tape; each piece of the amorphous adhesive tape contains 8 layers of amorphous alloy strip; the impregnation adhesive used includes epoxy impregnation varnish.

[0115] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0116] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 250 mm and a width of 120 mm. It includes 10 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.8 mm.

[0117] Example 14

[0118] This embodiment provides an amorphous adhesive tape. Except for changing the winding tension to make the stacking factor of the amorphous adhesive tape 93% and the impregnation residue rate 40%, everything else is the same as in Example 10.

[0119] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0120] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 150 mm and a width of 25 mm. It includes 10 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.8 mm.

[0121] Example 15

[0122] This embodiment provides an amorphous adhesive tape. Except for changing the winding tension to make the stacking factor of the amorphous adhesive tape 89% and the impregnation residue rate 60%, everything else is the same as in Example 10.

[0123] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0124] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 150 mm and a width of 25 mm. It includes 5 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.4 mm.

[0125] Example 16

[0126] This embodiment provides an amorphous adhesive tape. Except for changing the winding tension to make the stacking factor of the amorphous adhesive tape 65%, everything else is the same as in Embodiment 10.

[0127] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a carbide punch as the stamping die, allowing for smooth stamping. However, the amorphous adhesive tape has a low stacking factor, and due to the thick adhesive layer, there is a risk of cracking during the stamping process.

[0128] Example 17

[0129] This embodiment provides an amorphous adhesive tape, which is the same as that in Embodiment 10 except that each amorphous alloy tape has 5 layers.

[0130] The amorphous adhesive tape obtained in this embodiment has a stacking factor of 89%, a radius of curvature of 300 mm, and a residual impregnation rate of 46%.

[0131] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0132] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 300 mm and a width of 25 mm. It includes 10 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.8 mm.

[0133] Example 18

[0134] This embodiment provides a method for manufacturing an amorphous adhesive tape, except that each amorphous alloy tape has 5 layers, all other aspects are the same as in Embodiment 10.

[0135] The amorphous adhesive tape obtained in this embodiment has a stacking factor of 90%, a radius of curvature of 150 mm, and a residual impregnation rate of 45%.

[0136] The amorphous adhesive tape obtained in this embodiment is punched into a ring shape using a cemented carbide punch as the stamping die, which allows for smooth stamping.

[0137] The amorphous adhesive tape obtained in this embodiment is rolled into an amorphous adhesive tape roll with an inner radius of 150 mm and a width of 25 mm. It includes 10 layers of amorphous adhesive tape stacked together, and the thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.8 mm.

[0138] In summary, the amorphous adhesive tape provided by this invention, through the setting of interlayers during the manufacturing process, achieves the fabrication of amorphous adhesive tape with interlayers as intervals. Therefore, the amorphous adhesive tape of this invention has the property of being easy to prepare and is suitable for industrial production. In addition, the amorphous adhesive tape of this invention has a radius of curvature of ≥95mm, which can be sold in rolls without affecting the performance of the amorphous adhesive tape, and the adhesive layer is not easy to crack during storage and transportation. The manufacturing method provided by this invention, through the setting of interlayers, since the interlayers and the impregnating adhesive are not bonded, can realize the preparation of amorphous adhesive tape with interlayers as intervals. The preparation method is simple, and the number of layers of amorphous alloy strip in each amorphous adhesive tape can be reasonably set according to process requirements. The preparation method significantly reduces the manufacturing cost of amorphous adhesive tape, and the final amorphous adhesive tape can be used for stamping or sheet forming, successfully solving the problem of excessively thin sheet material in the amorphous alloy stamping process.

[0139] The above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention fall within the protection and disclosure scope of the present invention.

Claims

1. A method for manufacturing an amorphous adhesive tape, characterized in that, The manufacturing method includes the following steps: (1) Amorphous alloy strips are wound together. During the winding process, interlayers are set according to the number of layers of amorphous alloy strips in the required amorphous adhesive tape to obtain the wound material. (2) Impregnate and cure the composite material to obtain an adhesive tape roll with a separator; (3) The adhesive tape roll with the spacer layer is split into smaller rolls to obtain amorphous adhesive tape in rolls; The amorphous adhesive tape comprises at least two layers of amorphous alloy tape stacked together. An adhesive layer is placed between two adjacent layers of amorphous alloy strip; The radius of curvature of the amorphous adhesive tape is ≥95mm; The stacking factor of the amorphous adhesive tape is 80-95%.

2. The manufacturing method according to claim 1, characterized in that, The amorphous bonding tape comprises 2-20 layers of amorphous alloy tape.

3. The manufacturing method according to claim 1, characterized in that, The thickness of each layer of amorphous alloy strip is 10-50 μm; The width of each layer of amorphous alloy strip is 5-300mm.

4. The manufacturing method according to claim 1, characterized in that, The material of the partition in step (1) includes, but is not limited to, a release agent, a polytetrafluoroethylene film, or a single-layer amorphous alloy strip coated with a release agent on both sides.

5. The manufacturing method according to claim 1, characterized in that, When the material of the partition in step (1) is a release agent, the thickness of the partition is ≤50μm; When the material of the partition in step (1) is a polytetrafluoroethylene film, the thickness of the partition is 0.05-0.2 mm; When the material of the partition in step (1) is a single-layer amorphous alloy strip coated with a release agent on both sides, the thickness of the partition is 10-100μm.

6. The manufacturing method according to claim 1, characterized in that, When the material of the partition is a polytetrafluoroethylene film and / or a single-layer amorphous alloy strip coated with a release agent on both sides, the partition will be recycled during the slitting process in step (3).

7. The manufacturing method according to claim 1, characterized in that, The impregnation adhesive used in step (2) includes, but is not limited to, epoxy resin, silicone or acrylic resin.

8. The manufacturing method according to claim 7, characterized in that, The residual impregnating adhesive of the amorphous adhesive tape is 40-90%.

9. An application of an amorphous adhesive tape manufactured by the method according to any one of claims 1-8, characterized in that, The amorphous adhesive tape is used for stamping.

10. An amorphous adhesive tape roll, characterized in that, The amorphous adhesive tape roll is obtained by rolling the amorphous adhesive tape produced by the manufacturing method according to any one of claims 1-8.

11. The amorphous adhesive tape roll according to claim 10, characterized in that, The inner radius of the amorphous adhesive tape roll is ≥150mm.

12. The amorphous adhesive tape roll according to claim 10, characterized in that, The thickness of the amorphous adhesive tape in the amorphous adhesive tape roll is 0.02-1.6 mm.

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