Ceramic silicone rubber self-adhesive tape with high self-adhesion and preparation method of ceramic silicone rubber self-adhesive tape

Abstract

The invention belongs to the technical field of self-adhesive tape preparation, and particularly relates to a ceramic silicone rubber self-adhesive tape with high self-adhesion and a preparation method thereof. Comprising the following components in parts by weight: 100 parts of silicone rubber; 30 to 50 parts of white carbon black; 4-20 parts of a ceramic forming filler; 2 to 8 parts of a polyborosiloxane tackifier; 0.5 to 3 parts of tackifying resin; 2-5 parts of a structure control agent; 0.5 to 2 parts of a silane coupling agent; and 1-2 parts of a cross-linking agent. According to the invention, the silicone rubber is mainly used as a base material, various functional additives, the fire-resistant filler and the ceramic forming filler are added, and the silicone rubber self-adhesive tape is prepared by adopting an extrusion vulcanization mode, so that the final product can achieve the effect of self-adhesion without loosening through slight stretching lap joint after achieving the effect of similar products, and the problem of defects of the existing fire-resistant silicone rubber self-adhesive tape product is well solved.

Description

Technical Field

[0001] This invention belongs to the field of self-adhesive tape preparation technology, and specifically relates to a ceramicized silicone rubber self-adhesive tape with high self-adhesion and its preparation method. Background Technology

[0002] With the development of the communications and power industries, people are paying increasing attention to the fire safety of wires and cables, leading to the widespread use of various types of fire-resistant and fireproof cables. When the insulation layer of a cable is damaged and loses its insulating properties, or when fire resistance and insulation performance need to be improved at various cable joints, silicone rubber self-adhesive tape can be used for repair. Silicone rubber self-adhesive tape possesses the excellent weather resistance and insulation properties of silicone rubber, and its self-adhesive characteristics make it easy to use during application, quickly and effectively solving cable maintenance problems.

[0003] However, while ordinary flame-retardant silicone rubber self-adhesive tapes are self-extinguishing when exposed to fire, the residue powder produced when burned under prolonged open flame conditions lacks strength and is prone to falling off, failing to achieve a good fire-resistant effect. Therefore, the development of silicone rubber self-adhesive tapes with fire-retardant properties has become a necessity.

[0004] Currently, a self-adhesive silicone rubber tape that sintersects into a ceramic form when exposed to fire has been developed. Under combustion conditions, it can sinter a ceramic-like protective layer to temporarily protect the wire and cable core, prevent secondary disasters caused by short circuits, and also effectively prevent flame burns.

[0005] Commercially available burnable ceramizable silicone rubber self-adhesive tapes commonly use boric acid, borate esters, and a series of boron-containing compounds as tackifiers. After heat vulcanization, these tapes exhibit insufficient self-adhesiveness, and the addition of ceramic fillers further reduces their self-adhesiveness. During the wrapping process, over 100% stretching is required to generate sufficient adhesion at the surface overlap. In a fire, the tape wrapping area may not be completely burned. During fireproofing, some wrapping areas sinter into a ceramic-like protective layer, while other areas with incomplete ceramicization are prone to tearing of the ceramic protective layer due to their inherent resilience, forming cracks and weakening the fireproofing effect. Slight stretching during wrapping also leads to loosening and inoperability.

[0006] In view of the above situation, the existing technology mainly has the following technical defects: 1. Ordinary flame-retardant silicone rubber self-adhesive tape cannot provide fire protection for a long time, and leaves no residue after burning, thus failing to effectively prevent fire.

[0007] 2. However, commercially available ceramicizable silicone rubber self-adhesive tapes have low self-adhesion. When stretched significantly during construction, the product's own elasticity can easily tear the connection between the pre-sintered ceramicized layer and the tape that has not yet been ceramicized in a fire, thus failing to provide effective fire protection. When stretched slightly, they are prone to loosening during outdoor use, losing their protective function. Summary of the Invention

[0008] The purpose of this invention is to provide a ceramicized silicone rubber self-adhesive tape with high self-adhesion and its preparation method. This invention can achieve the same effect as similar products, and still achieve the effect of self-adhesion without loosening with slight stretching and overlapping, which effectively solves the defect problems of current refractory silicone rubber self-adhesive tape products.

[0009] To address the aforementioned technical problems, this invention provides a ceramicized silicone rubber self-adhesive tape with high self-adhesion, comprising the following components in parts by weight: Silicone rubber: 100 parts; silica: 30-50 parts; ceramic filler: 4-20 parts; polyboronsiloxane tackifier: 2-8 parts; tackifying resin: 0.5-3 parts; structure control agent: 2-5 parts; silane coupling agent: 0.5-2 parts; crosslinking agent: 1-2 parts.

[0010] Preferably, the components include the following parts by weight: Silicone rubber: 100 parts; silica: 40 parts; ceramic filler: 16 parts; polyboronsiloxane tackifier: 4 parts; tackifying resin: 1.5 parts; structure control agent: 4 parts; silane coupling agent: 2 parts; crosslinking agent: 1.5 parts.

[0011] Preferably, the silicone rubber is methyl vinyl silicone rubber with a vinyl content of 0.1-0.3 mol.

[0012] Preferably, the polyborosiloxane tackifier is prepared by using a boride and hydroxyl silicone oil in a mass ratio of (1-3):4.

[0013] Preferably, the preparation method of the polyborosiloxane tackifier includes: reacting a boride and hydroxyl silicone oil in a reaction vessel at a mass ratio of (1-3):4 under vacuum for 2-4 hours.

[0014] Preferably, the tackifying resin is hydrogenated rosin or rosin glycerol ester.

[0015] Preferably, the ceramic filler is one or more of silicates, aluminates, and aluminosilicates.

[0016] Preferably, the silica is fumed silica or precipitated silica.

[0017] Preferably, the silane coupling agent is one or more of vinyltriethoxysilane, vinyltrimethoxysilane, γ-aminopropyltriethoxysilane, and γ-methacryloyloxypropyltrimethoxysilane; the crosslinking agent is one or more of 2,4-dichlorobenzoyl peroxide, dicumyl peroxide, benzoyl peroxide, and 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane.

[0018] This invention also provides a method for preparing a ceramicized silicone rubber self-adhesive tape with high self-adhesion, comprising the following steps: Step S1: Add silicone rubber, structure control agent, polyborosiloxane tackifier and tackifying resin to a 70℃ kneader and stir for 2 hours, then heat to 160℃ and hold for 2 hours. Step S2: Add silane coupling agent, silica and ceramic filler to the 160℃ kneader of step S1 and mix evenly. Vacuum at 160℃ for 3 hours, discharge to obtain ceramic silicone rubber self-adhesive, and let stand for 48 hours. Step S3: The ceramic silicone rubber self-adhesive obtained in step S2 is mixed evenly with a crosslinking agent in a two-roll mill, and then sheeted out after passing through a thin mill 6 times to obtain the rubber compound. Step S4: The rubber material produced in step S3 is extruded using an extruder, vulcanized in a 260°C forced-air vulcanization oven, laminated with a release film, and then wound and packaged to obtain the ceramicized silicone rubber self-adhesive tape.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The selection of the rubber substrate in this invention enables the product to possess the excellent weather resistance and electrical properties of silicone rubber.

[0020] 2. The use of ceramic filler in this invention enables the tape to form a ceramic protective layer when exposed to fire or at high temperatures above 400°C, effectively isolating it from open flames and providing fire protection.

[0021] 3. The polyborosiloxane tackifier of this invention, through the compounding of tackifying resins, gives the product high self-adhesion, increases the self-adhesive effect, and ensures that the entire product will not loosen after slight stretching and wrapping, making construction easy. Attached Figure Description

[0022] Figure 1 This is a flowchart of a method for preparing a ceramicized silicone rubber self-adhesive tape with high self-adhesion, provided by the present invention. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention. Example

[0024] This embodiment presents a high self-adhesive ceramicized silicone rubber self-adhesive tape, the components of which are shown in Table 1 below: Table 1 silicone rubber 100 precipitate 40 ceramic filler 16 Polyborosiloxane tackifier 5 Tackifying resin 1.5 Structure control agent 4 Silane coupling agents 2 Crosslinking agent 1.5 The aforementioned silicone rubber is methyl vinyl silicone rubber with a vinyl content of 0.2%.

[0025] The aforementioned silica is fumed silica produced by the gas phase process.

[0026] The aforementioned polyborosiloxane tackifier is prepared from boric acid and hydroxyl silicone oil. The preparation method involves reacting boric acid and hydroxyl silicone oil in a 3:4 ratio under vacuum in a reactor at 140°C for 3 hours.

[0027] The ceramic filler mentioned above is potassium aluminum silicate from the aluminosilicate group.

[0028] The aforementioned structure control agent is low-molecular-weight hydroxyl silicone oil.

[0029] The aforementioned tackifying resin is hydrogenated rosin.

[0030] The silane coupling agent mentioned above is vinyltriethoxysilane.

[0031] The crosslinking agent mentioned above is 2,4-dichlorobenzoyl peroxide.

[0032] The preparation method of the high self-adhesive ceramicized silicone rubber self-adhesive tape in this embodiment of the invention specifically includes the following steps: Step 1) Put 100 parts of methyl vinyl silicone rubber, 4 parts of low molecular weight hydroxyl silicone oil, 5 parts of polyboron siloxane tackifier, and 1.5 parts of hydrogenated rosin into a 70℃ kneader and stir for 2 hours. Then raise the temperature to 160℃ and keep it at that temperature for 2 hours. Step 2) Add 2 parts of vinyltriethoxysilane, 40 parts of fumed silica and 16 parts of potassium aluminum silicate to the 160℃ kneader of Step 1) and mix evenly. Vacuum at 160℃ for 3 hours and discharge to obtain ceramicized silicone rubber self-adhesive. Let it stand for 48 hours. Step 3) Add 1.5 parts of 2,4-dichlorobenzoyl peroxide to the ceramicized silicone rubber self-adhesive from Step 2) on a two-roll mill and mix evenly. Pass through a thin mill 6 times and then sheet out. Step 4) The rubber material produced in Step 3) is extruded using an extruder, vulcanized in a forced-air vulcanization tunnel at a temperature of 260°C, and then wound and packaged after being laminated with a release liner to obtain the ceramicized silicone rubber self-adhesive tape. Example

[0033] The manufacturing process of this embodiment is the same as that of Embodiment 1, except that the materials and contents of each component are different, as shown in Table 2. Example

[0034] The manufacturing process of this embodiment is the same as that of Embodiment 1, except that the materials and contents of each component are different, as shown in Table 2. Example

[0035] The manufacturing process of this embodiment is the same as that of Embodiment 1, except that the materials and contents of each component are different, as shown in Table 2. Example

[0036] The manufacturing process of this embodiment is the same as that of Embodiment 1, except that the materials and contents of each component are different, as shown in Table 2. Example

[0037] The manufacturing process of this embodiment is the same as that of Embodiment 1, except that the materials and contents of each component are different, as shown in Table 2.

[0038] Table 2 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Methyl vinyl silicone rubber 100 100 100 100 100 100 Fumed silica 40 40 40 40 40 40 Potassium aluminosilicate 16 16 16 16 16 16 Polyborosiloxane tackifier 5 4 6 8 5 5 Tackifying resin 1.5 1.5 1.5 1.5 1 2 Low molecular weight hydroxyl silicone oil 4 4 4 4 4 4 Vinyltriethoxysilane 2 2 2 2 2 2 2,4-Dichlorobenzoyl peroxide 1.5 1.5 1.5 1.5 1.5 1.5 Comparative Example 1 The comparative example has the same manufacturing process as Example 1, except that the ingredients and contents of each component are different, as shown in Table 3.

[0039] Comparative Example 2 The comparative example has the same manufacturing process as Example 1, except that the ingredients and contents of each component are different, as shown in Table 3.

[0040] Comparative Example 3 The comparative example has the same manufacturing process as Example 1, except that the ingredients and contents of each component are different, as shown in Table 3.

[0041] Comparative Example 4 The comparative example has the same manufacturing process as Example 1, except that the ingredients and contents of each component are different, as shown in Table 3.

[0042] Comparative Example 5 The comparative example has the same manufacturing process as Example 1, except that the ingredients and contents of each component are different, as shown in Table 3.

[0043] Comparative Example 6 The comparative example has the same manufacturing process as Example 1, except that the ingredients and contents of each component are different, as shown in Table 3.

[0044] Table 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Methyl vinyl silicone rubber 100 100 100 100 100 100 Fumed silica 40 40 40 40 40 40 Potassium aluminosilicate 0 16 16 16 16 16 Alumina 16 0 0 0 0 0 Polyborosiloxane tackifier 5 0 0 0 0 0 Borate 0 2 5 0 0 2 Tackifying resin 1.5 1.5 1.5 1.5 0 0 Low molecular weight hydroxyl silicone oil 4 4 4 4 4 4 Vinyltriethoxysilane 2 2 2 2 2 2 2,4-Dichlorobenzoyl peroxide 1.5 1.5 1.5 1.5 1.5 1.5 Comparative Example 1: Compared with Example 1, the difference is that the ceramic filler is the commonly used alumina, and the ceramic effect is compared with that of Example 1.

[0045] Comparative Example 2: Compared with Example 1, the difference is that the tackifier is replaced with boron ester, a boron-containing compound mentioned in relevant literature, and its self-adhesive performance is compared with that of Example 1.

[0046] Comparative Example 3: Compared with Example 1 and Comparative Example 2, the difference is that the tackifier is replaced with boron ester, a boron-containing compound mentioned in relevant literature. The amount of boron ester is the same as that of polyborosiloxane tackifier in Example 1. Its self-adhesive performance is compared with that of Example 1 and Comparative Example 2.

[0047] Comparative Example 4: Compared with Example 1 and Comparative Example 2, without the addition of tackifier, its self-adhesive properties are compared with those of Example 1 and Comparative Example 2.

[0048] Comparative Example 5: Compared with Example 1, without the addition of tackifier or tackifying resin, its self-adhesive properties are compared with those of Example 1.

[0049] Comparative Example 6: Compared with Comparative Example 2, without the addition of tackifying resin, its self-adhesive properties were compared with those of Comparative Example 2.

[0050] The performance test results of Examples 1-6 are shown in Table 4 below: Table 4 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Tensile strength (MPa) 9.0 8.4 8.3 8.0 8.5 8.1 Elongation at break (%) 410 401 397 363 399 371 Tear strength (KN / m) 14.39 14.11 13.70 12.45 14.06 13.56 Dielectric strength (kV / mm) 24.2 20.0 22.1 21.5 23.0 22.4 Self-adhesive force (N / cm) 8.2 7.1 7.6 7.2 7.7 8 Self-adhesive (48h) No loosening No loosening No loosening No loosening No loosening No loosening Tackiness (85℃, 85%RH, 168H) No loosening No loosening No loosening No loosening Loose No loosening Resistant to flame erosion (1000℃, 5min) No cracks No cracks No cracks No cracks No cracks No cracks Table 4 shows the performance tests based on the following criteria: Tensile strength and elongation at break (GB / T 528-2009); Tear strength (GB / T 529-2008); Dielectric strength (GB / T 1695-2005); Self-adhesive strength (GB / T 2791-1995); Self-adhesion: The product was stretched and wrapped around a metal rod at (20±5)% and left at 25℃ for 48 hours. The sample was then observed to see if it loosened.

[0051] Flame erosion resistance: The product is stretched and wrapped (20±5)% onto a metal rod and left to stand for 1 hour. One side is then burned with a burner for 5 minutes. After cooling, the ceramic layer formed by the combustion is observed to see if there are any cracks.

[0052] Adhesion: The product is stretched and wrapped with (20±5)% on a metal rod and left for 1 hour. Then it is placed in an 85℃, 85%RH environmental test chamber for 168 hours. After taking out the sample, observe whether it is loose.

[0053] Comparing Examples 2, 1, 3, and 4, it is known that as the amount of polyborosiloxane tackifier increases, the self-adhesion, mechanical properties, and electrical properties of the product first increase and then decrease. When the amount of polyborosiloxane tackifier is 4 parts, the product has the best self-adhesion effect. Comparing Examples 1, 5, and 6, it can be seen that the tackifying resin provides the necessary initial tack properties for the product, enabling it to adhere without loosening when slightly stretched. When the dosage is 1.5 parts, the product can maintain adhesion without loosening and has the best self-adhesive effect.

[0054] Comparing the flame erosion resistance of Examples 1-6, it can be seen that when the stretching range is not large, the non-ceramicized part of the product used in the overlap has insufficient elasticity to tear the junction with the ceramicized part during the ablation process, thus ensuring the integrity of the ceramicized layer is maintained during the ablation process.

[0055] The performance test results of Comparative Examples 1-6 are shown in Table 5 below: Table 5 Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Tensile strength (MPa) 9.0 8.9 8.7 7.1 9.1 8.3 9.1 Elongation at break (%) 410 407 381 323 443 423 389 Tear strength (KN / m) 14.39 13.96 13.87 10.85 13.37 14.63 12.9 Dielectric strength (kV / mm) 24.2 22.6 21.1 18.9 23.1 24.9 24.3 Self-adhesive force (N / cm) 8.2 7.6 6.5 5.4 4.3 / 4.6 Self-adhesiveness (48h, (20±5)% elongation) No loosening No loosening No loosening Loose No loosening / Loose Self-adhesive (48h, over 100% tensile strength) No loosening No loosening No loosening No loosening No loosening / No loosening Tackiness (85℃, 85%RH, 168H, (20±5)% tensile strength) No loosening No loosening Loose Loose Loose / Loose Adhesion holding power (85℃, 85%RH, 168H, over 100% tensile strength) No loosening No loosening No loosening No loosening No loosening / No loosening Flame erosion resistance (1000℃, 5min, (20±5)% tensile strength) No cracks cracking No cracks No cracks No cracks / No cracks Resistant to flame erosion (1000℃, 5 min, 100% or more tensile strength) cracking cracking cracking cracking cracking / cracking Compared with Example 1, Comparative Example 1 used alumina as a ceramic filler. The test results showed that the product using alumina as a ceramic filler cracked during combustion and its ductility was not as good as that of potassium aluminosilicate in Example 1. It could not avoid cracking when resisting flame erosion.

[0056] Compared with Example 1, Comparative Example 2 used boron-containing borate ester as the tackifier. The test results showed that the self-adhesive force exhibited by the polyborosiloxane tackifier was significantly better than that of the boron-containing borate ester as the tackifier. Comparative Example 2 could not meet the holding power test under slight stretching.

[0057] Compared with Example 1 and Comparative Example 2, Comparative Example 3 showed a significant reduction in self-adhesion, mechanical properties, and insulation properties. The reduction in self-adhesion was due to different dosages and different boron content in the tackifier.

[0058] Compared with Example 1, Comparative Example 4 did not add any tackifier. The test results showed that the self-adhesive force exhibited by using polyborosiloxane tackifier was significantly higher, and Comparative Example 4 could not meet the holding power test under slight stretching.

[0059] Compared with Example 1, Comparative Example 5 did not contain any tackifier or tackifying resin, and therefore did not have self-adhesive properties, making it impossible to conduct adhesion tests.

[0060] Compared with Comparative Example 2, Comparative Example 4 showed significantly lower self-adhesion without the addition of tackifying resin, and its holding power was unsatisfactory; Comparative Example 6 showed lower self-adhesion without the addition of tackifier, and it could not be used without loosening under slight stretching.

[0061] Comparing Example 1 and Comparative Examples 2-5, it can be seen that the self-adhesive properties of the products are all satisfactory at 100% stretching, but they cannot prevent cracking when subjected to flame erosion.

[0062] Comparing Example 1 and Comparative Examples 2-5, it can be seen that when using polyborosiloxane tackifiers and tackifying resins to improve the self-adhesive properties of products, the self-adhesive properties of products can be significantly improved while maintaining superior mechanical and electrical properties.

[0063] In summary, the highly self-adhesive ceramicized silicone rubber self-adhesive tape prepared by this invention is installed on cables or cable joints that have lost their insulation protection through stretching and overlapping. It provides effective insulation protection and repair. When exposed to open flame, it sintersects into a ceramic-like protective layer with a certain strength, effectively isolating the flame and preventing secondary damage to the protected product. This invention mainly uses silicone rubber as the base material, adding various functional additives, refractory fillers, and ceramic fillers, and is prepared by extrusion vulcanization. The final product achieves the same effect as similar products while still maintaining a self-adhesive, non-loosening effect with slight stretching and overlapping, effectively solving the defects of current refractory silicone rubber self-adhesive tape products.

[0064] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A ceramicized silicone rubber self-adhesive tape with high self-adhesion, characterized in that, Includes the following components by weight: Silicone rubber: 100 parts; silica: 30-50 parts; ceramic filler: 4-20 parts; polyboronsiloxane tackifier: 2-8 parts; tackifying resin: 0.5-3 parts; structure control agent: 2-5 parts; Silane coupling agent: 0.5-2 parts; crosslinking agent: 1-2 parts.

2. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 1, characterized in that, Includes the following components by weight: Silicone rubber: 100 parts; silica: 40 parts; ceramic filler: 16 parts; polyboronsiloxane tackifier: 4 parts; tackifying resin: 1.5 parts; structure control agent: 4 parts; silane coupling agent: 2 parts; crosslinking agent: 1.5 parts.

3. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 2, characterized in that, The silicone rubber used is methyl vinyl silicone rubber, with a vinyl content of 0.1-0.3 mol.

4. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 2, characterized in that, The polyborosiloxane tackifier is prepared by mixing borate and hydroxyl silicone oil in a mass ratio of (1-3):

4.

5. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 4, characterized in that, The preparation method of the polyborosiloxane tackifier includes: reacting a boride and hydroxyl silicone oil in a reaction vessel at a mass ratio of (1-3):4 under vacuum for 2-4 hours.

6. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 2, characterized in that, The tackifying resin is hydrogenated rosin or rosin glycerol ester.

7. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 2, characterized in that, The ceramic filler is one or more of silicates, aluminates, and aluminosilicates.

8. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 2, characterized in that, The silica used is either fumed silica or precipitated silica.

9. The ceramicized silicone rubber self-adhesive tape with high self-adhesion as described in claim 2, characterized in that, The silane coupling agent is one or more of vinyltriethoxysilane, vinyltrimethoxysilane, γ-aminopropyltriethoxysilane, and γ-methacryloyloxypropyltrimethoxysilane; the crosslinking agent is one or more of 2,4-dichlorobenzoyl peroxide, dicumyl peroxide, benzoyl peroxide, and 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane.

10. A method for preparing a ceramicized silicone rubber self-adhesive tape with high self-adhesion, as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Step S1: Add silicone rubber, structure control agent, polyborosiloxane tackifier and tackifying resin to a 70℃ kneader and stir for 2 hours, then heat to 160℃ and hold for 2 hours. Step S2: Add silane coupling agent, silica and ceramic filler to the 160℃ kneader of step S1 and mix evenly. Vacuum at 160℃ for 3 hours, discharge to obtain ceramic silicone rubber self-adhesive, and let stand for 48 hours. Step S3: The ceramic silicone rubber self-adhesive obtained in step S2 is mixed evenly with a crosslinking agent in a two-roll mill, and then sheeted out after passing through a thin mill 6 times to obtain the rubber compound. Step S4: The rubber material produced in step S3 is extruded using an extruder, vulcanized in a 260°C forced-air vulcanization oven, laminated with a release film, and then wound and packaged to obtain the ceramicized silicone rubber self-adhesive tape.

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