Composite glass fiber flame-retardant adhesive tape

Abstract

The utility model discloses a composite glass fiber flame-retardant adhesive tape. The composite glass fiber flame-retardant adhesive tape comprises a wear-resistant hardened layer, a base material layer, a flame-retardant adhesive layer, a glass fiber cloth layer, a flame-retardant adhesive layer, a base material layer, an outer bonding use layer and a release layer which are sequentially distributed. The flame-retardant adhesive layer and the glass fiber cloth layer are ingeniously attached between the two base material layers, the glass fiber cloth layer is high in tensile strength and good in toughness, so that the tensile property of the adhesive tape is excellent, the stability of the adhesive tape body can be improved, the flame-retardant adhesive layer and the excellent fireproof performance of glass fiber materials are matched, and the flame-retardant adhesive tape is good in flame-retardant property. The product achieves the UL94VTM-0 flame retardant grade, and the flame retardant effect is good. The surface of the adhesive tape is harder and more wear-resistant through the wear-resistant hardened layer, scratch and wear of external objects are effectively resisted, and the service life of the adhesive tape is prolonged. Compared with a traditional electronic new energy adhesive tape, the structural design of the middle composite glass fiber layer greatly improves the mechanical property, tensile strength and flame retardant property of the adhesive tape, and the adhesive tape has a wide application prospect.

Description

Technical Field

[0001] This utility model relates to the field of adhesive tape technology, and in particular to a composite glass fiber flame-retardant adhesive tape. Background Technology

[0002] With the rapid development of the electronics and new energy industries, flame-retardant tapes are widely used for bonding and protecting electronic components and lithium battery manufacturing processes. As market usage increases, their safety and stability have also received widespread attention. Factors such as overcharging, overheating, and short circuits in lithium batteries can cause severe localized overheating, creating a fire hazard. Therefore, for safety reasons, specialized tapes are generally used during lithium battery assembly to bond and fix components such as the battery cells. These specialized lithium battery tapes need to have excellent adhesive properties to prevent tape detachment during use, and excellent flame-retardant properties to reduce the risk of combustion.

[0003] For example, Chinese utility model patent CN216764776U discloses a high-temperature flame-retardant tape, comprising an adhesive layer, a base layer, an antistatic layer, a first shielding layer, a second shielding layer, a waterproof layer, a flame-retardant layer, and a scratch-resistant layer arranged sequentially, wherein the flame-retardant layer is specifically a magnesium hydroxide flame retardant. This high-temperature flame-retardant tape can minimize its own spontaneous combustion when used in high-temperature environments, thus preventing the ignition of surrounding objects. However, when in direct contact with a fire source, the adhesive layer is highly flammable, thus failing to provide flame-retardant protection. Upon contact with a fire source, it becomes an accelerant, posing a safety hazard. Therefore, there is a need to develop a composite fiberglass flame-retardant tape with good flame-retardant properties. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a composite fiberglass flame-retardant tape with a reasonable structural design and good flame-retardant properties.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A composite fiberglass flame-retardant tape includes a substrate layer, a wear-resistant hardening layer, a flame-retardant adhesive layer, a fiberglass cloth layer, an outer adhesive layer, and a release layer. The substrate layer and the flame-retardant adhesive layer each consist of two layers. The wear-resistant hardening layer, substrate layer, flame-retardant adhesive layer, fiberglass cloth layer, flame-retardant adhesive layer, substrate layer, outer adhesive layer, and release layer are arranged in a top-to-bottom order.

[0007] As a preferred embodiment of this utility model, the wear-resistant hardening layer is a UV-cured adhesive layer with a thickness of 1 to 3 micrometers, which makes the tape surface harder and more wear-resistant, able to resist scratches and wear from external objects, and extend the service life of the tape.

[0008] In a preferred embodiment of this invention, the flame-retardant adhesive layer is a flame-retardant acrylic pressure-sensitive adhesive with a thickness of 50-100 micrometers, which not only possesses excellent adhesion but also good flame-retardant properties. When the tape is exposed to high temperatures or a fire source, the flame-retardant adhesive layer can effectively prevent the spread of fire and reduce the risk of the tape burning. Simultaneously, the acrylic pressure-sensitive adhesive also exhibits good weather resistance and chemical resistance, enabling the tape to maintain stable performance even in harsh environments.

[0009] In a preferred embodiment of this invention, the outer adhesive layer is a high-viscosity acrylic pressure-sensitive adhesive with a thickness of 20-50 micrometers. It possesses strong adhesive force, enabling rapid bonding and fixation of objects. Furthermore, the high-viscosity acrylic pressure-sensitive adhesive exhibits excellent temperature and moisture resistance, ensuring stable adhesion in various environments.

[0010] As a preferred embodiment of this utility model, the substrate layer is PET with a thickness of 25 to 75 micrometers, which has excellent mechanical properties, heat resistance and chemical stability, and can greatly improve the service life of the tape.

[0011] As a preferred embodiment of this utility model, the release layer is a composite silicone oil coating with a thickness of 25 to 75 micrometers, which makes peeling smoother and improves efficiency.

[0012] The beneficial effects of this utility model are as follows: The utility model has a reasonable structural design, with a flame-retardant adhesive layer and a fiberglass cloth layer bonded between the two substrate layers. The fiberglass cloth layer has high tensile strength and good toughness, resulting in excellent tensile properties of the tape, thereby improving the stability of the tape itself. Combined with the flame-retardant adhesive layer and the superior fire-retardant properties of the fiberglass material itself, this product achieves a UL94 VTM-0 flame-retardant rating, demonstrating excellent flame-retardant performance. The wear-resistant hardening layer makes the tape surface harder and more wear-resistant, effectively resisting scratches and abrasions from external objects, extending the tape's service life, and showing broad application prospects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of this utility model. Detailed Implementation

[0014] Example: See Figure 1 This utility model provides a composite fiberglass flame-retardant tape, including a substrate layer 1, a wear-resistant hardening layer 2, a flame-retardant adhesive layer 3, a fiberglass cloth layer 4, an outer adhesive layer 5, and a release layer 6.

[0015] Preferably, the wear-resistant hardening layer 2 is a UV-curable adhesive layer with a thickness of 1 to 3 micrometers, preferably containing polysiloxane, polyfluorosiloxane or organosilicon particles, which has high hardness and good wear resistance, making the tape surface harder and more wear-resistant, able to resist scratches and wear from external objects, and extend the service life of the tape.

[0016] The flame-retardant adhesive layer 3 is a flame-retardant acrylic pressure-sensitive adhesive with a thickness of 50-100 micrometers, which can be purchased directly from the market. Alternatively, the following weight ratio can be used: 60-75 parts acrylic copolymer, 6-12 parts organic aluminum hypophosphite, 1-2 parts melamine polyphosphate, 0.5-1 part leveling agent, 0.8-1.5 parts isocyanate or epoxy curing agent, and 20-28 parts solvent. Using a flame-retardant acrylic pressure-sensitive adhesive not only provides excellent adhesion but also good flame-retardant properties. When the tape is exposed to high temperatures or fire sources, the flame-retardant adhesive layer 3 can effectively prevent the spread of fire and reduce the risk of tape combustion. Simultaneously, the acrylic pressure-sensitive adhesive also has good weather resistance and chemical resistance, allowing the tape to maintain stable performance even in harsh environments.

[0017] Before lamination, the fiberglass cloth layer 4 is preferably impregnated to better bond the flame-retardant acrylic pressure-sensitive adhesive. Some of the flame-retardant acrylic pressure-sensitive adhesive will bond through the mesh of the fiberglass cloth. The fiberglass cloth layer 4 provides the tape with excellent tensile strength and bending performance.

[0018] The external adhesive layer 5 is preferably a high-viscosity acrylic pressure-sensitive adhesive with a thickness of 20-50 micrometers. High-viscosity acrylic pressure-sensitive adhesives are commercially available. Alternatively, the following weight ratio can be used: 70-80 parts acrylic copolymer, 0.5-1 part isocyanate or epoxy curing agent, and 20-30 parts solvent. Using high-viscosity acrylic pressure-sensitive adhesive results in strong adhesion, enabling rapid bonding and fixation of objects. Furthermore, high-viscosity acrylic pressure-sensitive adhesives also exhibit good temperature and moisture resistance, ensuring stable adhesion in various environments.

[0019] The substrate layer 1 is preferably PET with a thickness of 25 to 75 micrometers, which has excellent mechanical properties, heat resistance and chemical stability, and can greatly improve the service life of the tape.

[0020] The release layer 6 is a composite silicone oil coating with a thickness of 25 to 75 micrometers, which makes peeling smoother and improves efficiency.

[0021] The preparation method is as follows:

[0022] Step 1: Apply a hardening layer 2 and a flame-retardant acrylic adhesive layer 3 to both sides of the outer substrate layer 1;

[0023] Step 2: Apply flame-retardant acrylic adhesive layer 3 and high-tack acrylic adhesive layer 5 to both sides of the inner substrate layer 1, and attach a release layer 6 for protection on the outside of the high-tack acrylic adhesive layer 5.

[0024] Step 3: Adhere the flame-retardant acrylic adhesive layers 3 from Step 1 and Step 2 together, sandwiching a fiberglass cloth layer 4 between the two flame-retardant acrylic adhesive layers 3, thus achieving simultaneous application of all three layers. The wear-resistant hardening layer 2, substrate layer 1, flame-retardant adhesive layer 3, fiberglass cloth layer 4, flame-retardant adhesive layer 3, substrate layer 1, outer adhesive layer 5, and release layer 6 are distributed sequentially from top to bottom.

[0025] During use, a flame-retardant adhesive layer 3 and a fiberglass cloth layer 4 are bonded between the two substrate layers 1. The fiberglass cloth layer 4 has high tensile strength and good toughness, which makes the tape have excellent tensile properties, thereby improving the stability of the tape body. Combined with the flame-retardant adhesive layer 3 and the superior fire-retardant properties of the fiberglass material itself, this product achieves a UL94 VTM-0 flame retardant rating, with good flame retardant effect and excellent fire-resistant effect.

[0026] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model. The use of other membranes that are the same as or similar to those used are all within the protection scope of this utility model.

Claims

1. A composite fiberglass flame-retardant tape, comprising a substrate layer, characterized in that, It also includes a wear-resistant hardening layer, a flame-retardant adhesive layer, a fiberglass cloth layer, an outer bonding layer, and a release layer. The substrate layer and the flame-retardant adhesive layer each consist of two layers. The wear-resistant hardening layer, substrate layer, flame-retardant adhesive layer, fiberglass cloth layer, flame-retardant adhesive layer, substrate layer, outer bonding layer, and release layer are distributed in order from top to bottom.

2. The composite fiberglass flame-retardant tape according to claim 1, characterized in that, The wear-resistant hardening layer is a UV-curable adhesive layer with a thickness of 1 to 3 micrometers.

3. The composite fiberglass flame-retardant tape according to claim 1, characterized in that, The flame-retardant adhesive layer is a flame-retardant acrylic pressure-sensitive adhesive with a thickness of 50-100 micrometers.

4. The composite fiberglass flame-retardant tape according to claim 1, characterized in that, The external adhesive layer is a high-viscosity acrylic pressure-sensitive adhesive with a thickness of 20-50 micrometers.

5. The composite glass fiber flame-retardant tape according to claim 1, characterized in that, The substrate layer is PET with a thickness of 25 to 75 micrometers.

6. The composite glass fiber flame-retardant tape according to any one of claims 1-5, characterized in that, The release layer is a composite silicone oil coating with a thickness of 25 to 75 micrometers.

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