Low odor silicone rubber self-adhesive tape material, method of making, and low odor silicone rubber self-adhesive tape

Abstract

The application discloses a low-odor silicone rubber self-adhesive material, a preparation method and a low-odor silicone rubber self-adhesive. The ingredients of the low-odor silicone rubber self-adhesive material include, in parts by weight, 30-50 parts of silicone rubber, 2-10 parts of defrosting and deodorizing agents, 1-10 parts of tackifiers and 1-5 parts of vulcanizing agents, wherein the defrosting and deodorizing agents are compounded from defrosting agents and deodorizing agents, the defrosting agents include at least one active point capable of undergoing a metathesis reaction with acidic substances, and the deodorizing agents are composed of non-polar segments and at least one polar group. The low-odor silicone rubber self-adhesive material provided by the application is safe, environmentally friendly, low-odor, and has excellent mechanical properties and flame-retardant properties.

Description

Technical Field

[0001] This invention relates to the field of power protection, specifically to a low-odor silicone rubber self-adhesive tape material, its preparation method, and the low-odor silicone rubber self-adhesive tape itself. Background Technology

[0002] With the rapid development of my country's power sector, the environmental performance of power products has received increasing attention. Among them, silicone rubber self-adhesive tape, as a high-performance self-adhesive material, plays a crucial role in the power industry, where safety and reliability requirements are extremely high, thanks to its excellent mechanical properties, resistance to high and low temperatures, flame retardancy, and self-adhesion. However, since most of the vulcanization systems used in silicone self-adhesive tape are bis(2,4)-dichlorobenzoic acid, chlorobenzene small molecules, carbon dioxide, and trace amounts of acidic volatile byproducts, these substances easily migrate and precipitate onto the product surface, forming a white bloom layer and releasing a pungent odor. Therefore, in enclosed spaces or places with high air quality requirements, such as distribution boxes, cabinets, car interiors, hospitals, laboratories, and food processing plants, this can have a health impact on workers and seriously affect the appearance and application performance of silicone rubber products. Therefore, it is essential to develop a safe, environmentally friendly, low-odor silicone rubber self-adhesive tape material with excellent mechanical properties and flame retardancy. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention proposes a low-odor silicone rubber self-adhesive tape material, a preparation method and a silicone rubber self-adhesive tape, aiming to provide a safe, environmentally friendly, low-odor silicone rubber self-adhesive tape material with excellent mechanical properties and flame retardancy.

[0004] To achieve the above objectives, the present invention proposes a low-odor silicone rubber self-adhesive tape material. The ingredients of the low-odor silicone rubber self-adhesive tape material, by weight, include 30-50 parts of silicone rubber, 2-10 parts of defrosting and deodorizing agent, 1-10 parts of tackifier, and 1-5 parts of vulcanizing agent. The defrosting and deodorizing agent is a compound of defrosting agent and deodorizing agent. The defrosting agent includes at least one active site capable of undergoing metathesis reaction with acidic substances, and the deodorizing agent is composed of non-polar segments and at least one polar group.

[0005] Optionally, the weight ratio of the defrosting agent to the deodorizing agent is (1-2):(1-2).

[0006] Optionally, the defrosting agent is an alkaline oxide, an organic acid metal salt, or an alkaline oxide and an organic acid metal salt; the deodorizing agent is stearamide, hexamethylenediamine derivative, epoxy silicone oil, or glycidyl glycerin, or two or more of stearamide, hexamethylenediamine derivative, epoxy silicone oil, and glycidyl glycerin.

[0007] Optionally, the silicone rubber is methyl vinyl silicone rubber with a vinyl content of 0.1%-0.5%.

[0008] Optionally, the tackifier is a low-odor borosilicate tackifier.

[0009] Optionally, the tackifier comprises 10-20 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of boric acid, and 1-5 parts of boron oxide obtained by a condensation reaction.

[0010] Optionally, the vulcanizing agent is a bis(2,4-dichloro) vulcanizing agent (DCBP).

[0011] Optionally, the low-odor silicone rubber self-adhesive tape material further includes 10-50 parts of reinforcing agent, 10-30 parts of flame retardant, 1-10 parts of lubricant, and 1-5 parts of surface treatment agent.

[0012] Optionally, the reinforcing agent is fumed silica; the flame retardant is at least one of aluminum hydroxide, magnesium hydroxide, antimony trioxide, zinc borate, decabromodiphenyl ethane, and hydrotalcite; the lubricant is at least one of hydrogen-containing silicone oil, dimethyl silicone oil, and hydroxyl silicone oil; and the surface treatment agent is at least one of octamethylcyclotetrasiloxane, hexamethyldisilazane, silane coupling agent KH550, silane coupling agent KH560, silane coupling agent KH570, and silane coupling agent KH792.

[0013] To achieve the above objectives, the present invention also proposes a method for preparing a low-odor silicone rubber self-adhesive tape material, comprising the following steps: Preparation of tackifier: Mix 10-20 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of boric acid and 1-5 parts of boron oxide and add to a reactor. Heat to 150-170℃ and stir for 2-4 hours. After cooling, the tackifier is obtained. Preparation of low-odor silicone rubber self-adhesive tape material: Silicone rubber, tackifier, reinforcing agent, flame retardant, lubricant and surface treatment agent are mixed in an intensive mixer, and after extrusion, defrosting and deodorizing agent and vulcanizing agent are added and mixed evenly on a two-roll mill. After extrusion, a low-odor silicone rubber self-adhesive tape is obtained.

[0014] To achieve the above objectives, the present invention also proposes a low-odor silicone rubber self-adhesive tape, which is prepared from any of the aforementioned low-odor silicone rubber self-adhesive tape materials.

[0015] The beneficial effects of this invention are as follows: In this invention, silicone rubber is a non-polar or weakly polar matrix material. A vulcanizing agent is added for vulcanization. The vulcanizing agent rapidly decomposes to generate free radicals, thereby causing the silicone rubber to crosslink and solidify, forming a stable network structure. This achieves moisture-proof, corrosion-proof, shock-proof, and low-shrinkage properties. Simultaneously, 2,4-dichlorobenzoic acid, chlorobenzene small molecules, carbon dioxide, and trace amounts of acidic volatile byproducts are generated. The defrosting and deodorizing agent is an important component of this invention, composed of a defrosting agent and a deodorizing agent. The defrosting agent includes at least one active site capable of undergoing a metathesis reaction with acidic substances. This active site can react with the polar byproducts generated after vulcanization, thereby generating an odorless, stable, and compatible inert salt with silicone rubber. The stable ionic bonds in the inert salt break the phase separation between the non-polar matrix of the silicone rubber and the polar byproducts, increasing the upper limit of solubility of the polar byproducts in the silicone rubber, thus fixing them inside the silicone rubber and preventing them from migrating to the surface. The deodorizer can volatilize into the environment, greatly reducing the phenomenon of blooming on the surface of silicone rubber. At the same time, the deodorizer is composed of non-polar segments and at least one polar group. The non-polar segment structure is compatible with silicone rubber, while the polar group has a strong affinity for odor molecules. It encapsulates the difficult-to-react free blooming precursors and odor molecules to form stable aggregates, reducing the diffusion coefficient of odor molecules and inhibiting their migration rate, forming a stable coating layer that prevents odor molecules from migrating freely. Therefore, the compounded defrosting and deodorizing agent forms a dual locking of chemical fixation and physical coating. Furthermore, the defrosting agent and the deodorizing agent can work together as additional cross-linking points, making the silicone rubber macromolecular chains more tightly connected, building a denser cross-linking network, reducing the internal space, and further restricting the movement of molecular chain segments. This reduces the migration path of small molecule byproducts in physical space and provides a more stable basis for the mechanism of chemical fixation and physical coating. In defrosting and deodorizing agents, defrosting agents and deodorizing agents share the core characteristics of homologous targeting, mechanism coupling, and synergistic effect. Through a triple synergistic mechanism of chemical reaction covalent bonding, physical solubilization and encapsulation fixation, and cross-linked network densification and blocking, they simultaneously achieve efficient sealing, transformation and inhibition of the pre-frosting precursor and odor source, so that the prepared silicone rubber self-adhesive tape material basically achieves low odor and has excellent safety and environmental protection performance. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It should be understood that the following embodiments are only used to explain the present invention and are not intended to limit the present invention.

[0017] Unless otherwise specified, all technical and scientific terms used herein have their usual meaning within the field to which the subject matter is claimed.

[0018] To facilitate understanding of this embodiment, the symbols, instruments, and terms are explained below: DCBP: 2,4-Dichlorobenzoyl peroxide is a diacyl organic peroxide widely used in the thermal vulcanization process of silicone rubber, especially suitable for the hot air continuous vulcanization process of extruded products.

[0019] With the rapid development of my country's power sector, the environmental performance of power products has received increasing attention. Among them, silicone rubber self-adhesive tape, as a high-performance self-adhesive material, plays a crucial role in the power industry, where safety and reliability requirements are extremely high, thanks to its excellent mechanical properties, resistance to high and low temperatures, flame retardancy, and self-adhesion. However, since most of the vulcanization systems used in silicone self-adhesive tape are bis(2,4)-dichlorobenzoic acid, chlorobenzene small molecules, carbon dioxide, and trace amounts of acidic volatile byproducts, these substances easily migrate and precipitate onto the product surface, forming a white bloom layer and releasing a pungent odor. Therefore, in enclosed spaces or places with high air quality requirements, such as distribution boxes, cabinets, car interiors, hospitals, laboratories, and food processing plants, this can have a health impact on workers and seriously affect the appearance and application performance of silicone rubber products. Therefore, it is essential to develop a safe, environmentally friendly, low-odor silicone rubber self-adhesive tape material with excellent mechanical properties and flame retardancy.

[0020] To address the aforementioned problems, this invention proposes a low-odor silicone rubber self-adhesive tape material. The low-odor silicone rubber self-adhesive tape material, by weight, comprises 30-50 parts silicone rubber, 2-10 parts defrosting and deodorizing agent, 1-10 parts tackifier, and 1-5 parts vulcanizing agent. The defrosting and deodorizing agent is a compound of a defrosting agent and a deodorizing agent. The defrosting agent includes at least one active site capable of undergoing a metathesis reaction with acidic substances, and the deodorizing agent is composed of non-polar segments and at least one polar group.

[0021] In this invention, silicone rubber is a non-polar or weakly polar matrix material. A vulcanizing agent is added for vulcanization. The vulcanizing agent rapidly decomposes to generate free radicals, thereby crosslinking and curing the silicone rubber to form a stable network structure. This achieves moisture-proof, corrosion-proof, shock-proof, and low-shrinkage properties. Simultaneously, 2,4-dichlorobenzoic acid, chlorobenzene molecules, carbon dioxide, and trace amounts of acidic volatile byproducts are produced. The defrosting and deodorizing agent is an important component of this invention, composed of a defrosting agent and a deodorizing agent. The defrosting agent includes at least one active site capable of undergoing a metathesis reaction with acidic substances. This active site can react with the polar byproducts generated after vulcanization, thereby generating an odorless, stable, and compatible inert salt with silicone rubber. The stable ionic bonds in the inert salt break the phase separation between the non-polar matrix of the silicone rubber and the polar byproducts, increasing the upper limit of solubility of the polar byproducts in the silicone rubber, thus fixing them inside the silicone rubber and preventing them from migrating to the surface or to the outside. The volatile nature of the deodorizer significantly reduces the occurrence of blooming on the surface of silicone rubber. Simultaneously, the deodorizer is composed of non-polar segments and at least one polar group. The non-polar segment structure is compatible with silicone rubber, while the polar group has a strong affinity for small odor molecules. This encapsulates the difficult-to-react free blooming precursors and small odor molecules into stable aggregates, reducing the diffusion coefficient of the small odor molecules and inhibiting their migration rate. This forms a stable coating layer, preventing the small odor molecules from migrating freely. Therefore, the compounded defrosting and deodorizing agent achieves a dual locking mechanism of chemical fixation and physical coating. Furthermore, the defrosting agent and deodorizing agent can jointly serve as additional cross-linking points, making the silicone rubber macromolecular chains more tightly connected, constructing a denser cross-linked network. The internal space is reduced, and the movement of molecular chain segments is more restricted. This reduces the migration path of small molecule byproducts from a physical perspective and provides a more stable basis for the mechanism of chemical fixation and physical coating. In defrosting and deodorizing agents, defrosting agents and deodorizing agents share the core characteristics of homologous targeting, mechanism coupling, and synergistic effect. Through a triple synergistic mechanism of chemical reaction covalent bonding, physical solubilization and encapsulation fixation, and cross-linked network densification and blocking, they simultaneously achieve efficient sealing, transformation and inhibition of the pre-frosting precursor and odor source, so that the prepared silicone rubber self-adhesive tape material basically achieves low odor and has excellent safety and environmental protection performance.

[0022] Understandably, the silicone rubber is 30-50 parts, and the number of parts can be any number between 30, 35, 40, 45, 50, etc.; the defrosting and deodorizing agent is 2-10 parts, and the number of parts can be any number between 2, 3, 4, 10, etc.; the tackifier is 1-10 parts, and the number of parts can be any number between 1, 3, 5, 7, 9, 10, etc.; the vulcanizing agent is 1-5 parts, and the number of parts can be any number between 1, 2, 3, 4, 5, etc.

[0023] Furthermore, the weight ratio of defrosting agent to deodorizing agent is (1-2):(1-2).

[0024] The defrosting and deodorizing agent is a compound of defrosting agent and deodorizing agent, with a weight ratio of (1-2):(1-2). When the defrosting agent and deodorizing agent are prepared in a weight ratio of (1-2):(1-2), it ensures that there are enough active sites and polar groups in the defrosting and deodorizing agent to react with the vulcanization byproducts of the vulcanizing agent, while avoiding the reduction of the mechanical properties of the low-odor silicone rubber self-adhesive tape material.

[0025] Understandably, the weight ratio of defrosting agent and deodorizing agent can be any ratio such as 1 part: 1 part, 1 part: 2 parts, 1.5 parts: 1 part, 2 parts: 1 part, 2 parts: 1.5 parts, etc.

[0026] In some embodiments, the preferred weight ratio of the defrosting agent and the deodorizing agent is 1:1.

[0027] Furthermore, the defrosting agent is an alkaline oxide, an organic acid metal salt, or an alkaline oxide and an organic acid metal salt; the deodorizing agent is stearamide, hexamethylenediamine derivative, epoxy silicone oil, or glycidyl glycerin, or two or more of stearamide, hexamethylenediamine derivative, epoxy silicone oil, and glycidyl glycerin.

[0028] Understandably, the defrosting agent includes at least one active site capable of undergoing a metathesis reaction with acidic substances. This active site can react with the polar byproducts generated after the vulcanizing agent is vulcanized, thereby generating an odorless, stable, and inert salt with good compatibility with silicone rubber, greatly reducing the phenomenon of blooming on the surface of silicone rubber. The alkaline oxide is the main byproduct receiver, capable of capturing the acidic substances generated after the vulcanizing agent is vulcanized. In some embodiments, the alkaline oxide is at least one of zinc oxide, magnesium oxide, calcium oxide, and barium oxide, preferably zinc oxide. The organic acid metal salt can neutralize the acidic byproducts through a metathesis reaction with metal ions, and can also play a role in internal lubrication and physical isolation in the rubber due to its long-chain alkyl structure. In some embodiments, the organic acid metal salt is at least one of zinc stearate, calcium stearate, magnesium stearate, barium stearate, zinc laurate, and calcium laurate, preferably zinc stearate.

[0029] Understandably, defrosting agents can be a single alkaline oxide, a single organic acid metal salt, or a combination of alkaline oxides and organic acid metal salts.

[0030] Understandably, deodorizers consist of non-polar segments and at least one polar group. The non-polar segment structure is compatible with silicone rubber, while the polar group has a strong affinity for odor molecules. It encapsulates the difficult-to-react free blooming precursors and odor molecules to form stable aggregates, preventing the odor molecules from migrating freely and significantly reducing the odor produced after vulcanization. It is safe and environmentally friendly.

[0031] In some embodiments, the hexamethylenediamine derivative is at least one selected from N,N'-bis-(2,2,6,6-tetramethyl-4-piperidinyl)-1,6-hexamethylenediamine, hexamethylenediamine tetramethylenephosphonic acid, hexamethylenediamine-β-cyclodextrin, hexamethylenediisocyanate, and N-methylhexamethylenediamine, preferably hexamethylenediamine tetramethylenephosphonic acid.

[0032] In some embodiments, the epoxy silicone oil is at least one of terminal epoxy silicone oil, epoxy modified silicone oil, polyether epoxy co-modified silicone oil, and phenyl epoxy silicone oil, preferably terminal epoxy silicone oil.

[0033] Furthermore, the silicone rubber is methyl vinyl silicone rubber with a vinyl content of 0.1%-0.5%.

[0034] In methyl vinyl silicone rubber, vinyl is the crosslinking point. The higher the vinyl content, the higher the crosslinking density. A suitable range of vinyl content can ensure that the low-odor silicone rubber self-adhesive tape maintains its mechanical properties while improving its heat aging resistance and high-temperature compression deformation resistance.

[0035] In some embodiments, the silicone rubber is methyl vinyl silicone rubber, and the vinyl content is preferably 0.2%.

[0036] Furthermore, the tackifier is a low-odor borosilicate tackifier.

[0037] In silicone rubber self-adhesive tape, silicone rubber itself does not have self-adhesive ability. The core role of the tackifier is to give the originally non-self-adhesive silicone rubber controllable self-adhesive properties. By introducing boron atoms or low molecular weight components, the intermolecular interaction is enhanced, so that the material has macroscopic self-adhesiveness, so that the layers can be integrated into one after winding, and achieve functions such as bonding and sealing.

[0038] Furthermore, the tackifier comprises 10-20 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of boric acid, and 1-5 parts of boron oxide obtained through a condensation reaction.

[0039] The hydroxyl groups in hydroxyl-terminated polydimethylsiloxane undergo condensation with the hydroxyl groups in boric acid. Boron oxide, being an acidic oxide, assists boric acid in forming a compound with hydroxyl-terminated polydimethylsiloxane containing Si-OB and siloxane segments. The dynamic bonds of Si-OB act as crosslinking points, connecting the formed borosilicate segments with the siloxane segments in the original polydimethylsiloxane, thereby improving the adhesive properties.

[0040] Understandably, the hydroxyl-terminated polydimethylsiloxane is 10-20 parts, and the number of parts can be any number between 10-20 parts, such as 10 parts, 15 parts, 20 parts, etc.; the boric acid is 1-5 parts, and the number of parts can be any number between 1-5 parts, such as 1 part, 2 parts, 3 parts, 4 parts, 5 parts, etc.; the boron oxide is 1-5 parts, and the number of parts can be any number between 1-5 parts, such as 1 part, 2 parts, 3 parts, 5 parts, 5 parts, etc.

[0041] In some embodiments, the tackifier is preferably obtained by a condensation reaction of 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide.

[0042] Furthermore, the vulcanizing agent is a bis(2,4-dichloro) vulcanizing agent.

[0043] DCBP (dichlorodiphenyltrioxide) vulcanizing agent has a low decomposition temperature and fast vulcanization speed. As an organic peroxide crosslinking agent, it decomposes to generate free radicals, which initiate crosslinking of silicone rubber molecular chains through the free radical reaction mechanism, forming a three-dimensional network structure and improving the elasticity, strength and heat resistance of the material.

[0044] Furthermore, the low-odor silicone rubber self-adhesive tape material also includes 10-50 parts of reinforcing agent, 10-30 parts of flame retardant, 1-10 parts of lubricant, and 1-5 parts of surface treatment agent.

[0045] The reinforcing agent, rich in hydroxyl groups, can form hydrogen bonds with the Si-O groups in the silicone rubber molecular chain, restricting molecular chain slippage and forming a "spatial skeleton" structure in the matrix, effectively dispersing stress and avoiding localized stress concentration. The addition of flame retardants ensures the fire safety of the low-odor silicone rubber self-adhesive tape material. When exposed to high-temperature flames, it can form a ceramic-like hard shell or self-supporting ceramic body, acting as a flame barrier and protecting the internal structure. Lubricants improve the flowability of silicone rubber, reduce the coefficient of friction, make the product surface smoother, improve processing efficiency, and also improve transparency and gloss.

[0046] In some embodiments, the reinforcing agent is preferably 20-40 parts, the flame retardant is preferably 15-25 parts, the lubricant is preferably 3-8 parts, and the surface treatment agent is preferably 2-4 parts.

[0047] Furthermore, the reinforcing agent is fumed silica; the flame retardant is at least one of aluminum hydroxide, magnesium hydroxide, antimony trioxide, zinc borate, decabromodiphenyl ethane, and hydrotalcite; the lubricant is at least one of hydrogen-containing silicone oil, dimethyl silicone oil, and hydroxyl silicone oil; and the surface treatment agent is at least one of octamethylcyclotetrasiloxane, hexamethyldisilazane, silane coupling agent KH550, silane coupling agent KH560, silane coupling agent KH570, and silane coupling agent KH792.

[0048] In some embodiments, the flame retardant is preferably aluminum hydroxide.

[0049] In some embodiments, the lubricant is preferably a hydrogen-containing silicone oil.

[0050] In some embodiments, the surface treatment agent is preferably octamethylcyclotetrasiloxane.

[0051] This invention also proposes a method for preparing low-odor silicone rubber self-adhesive tape, comprising the following steps: Preparation of tackifier: Mix 10-20 hydroxyl-terminated polydimethylsiloxane, 1-5 parts boric acid and 1-5 parts boron oxide and add to a reactor. Heat to 150-170℃ and stir for 2-4 hours. After cooling, the tackifier is obtained. Preparation of low-odor silicone rubber self-adhesive tape material: Silicone rubber, tackifier, reinforcing agent, flame retardant, lubricant and surface treatment agent are mixed in an intensive mixer, and after extrusion, defrosting and deodorizing agent and vulcanizing agent are added and mixed evenly on a two-roll mill. After extrusion, a low-odor silicone rubber self-adhesive tape is obtained.

[0052] In some embodiments, extrusion is achieved using a single-screw extruder with a die temperature of 25°C and a feed speed of 10-20 r / min.

[0053] The present invention also proposes a low-odor silicone rubber self-adhesive tape, which is prepared from any of the low-odor silicone rubber self-adhesive tape materials mentioned above.

[0054] This invention combines various raw materials and uses wear-resistant agents to give the high oil-resistant and wear-resistant cable material in this technical solution excellent mechanical properties while also ensuring high wear resistance.

[0055] The following specific embodiments and data explain the content of the present invention.

[0056] Information on the raw materials involved in the specific implementation method is shown in Table 1: Table 1 Information on raw materials for the examples and comparative examples

[0057] Example 1: Defrost and deodorizer 1 was prepared by using zinc oxide and stearamide in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 30 parts of methyl vinyl silicone rubber, 1 part of tackifier 1, 15 parts of fumed silica, 12 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 2 parts of defrosting and deodorizing agent 1 and 1 part of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0058] Example 2: Defrost and deodorizer 2 was prepared by using magnesium oxide and stearamide in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 4 parts of tackifier 1, 30 parts of fumed silica, 25 parts of aluminum hydroxide, 3 parts of lubricant, and 1 part of surface treatment agent were mixed in a mixer. After extrusion, 5 parts of defrosting and deodorizing agent 2 and 5 parts of bis(2,4)2 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0059] Example 3: Defrost and deodorizer 3 was prepared by using zinc stearate and stearamide in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 50 parts of methyl vinyl silicone rubber, 7 parts of tackifier, 45 parts of fumed silica, 18 parts of aluminum hydroxide, 1 part of lubricant, and 5 parts of surface treatment agent were mixed in a mixer. After extrusion, 10 parts of defrosting and deodorizing agent and 4 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0060] Example 4: Defrost and deodorizer 4 was prepared by using zinc oxide and hexamethylenediaminetetramethylenephosphonic acid in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 45 parts of methyl vinyl silicone rubber, 10 parts of tackifier, 50 parts of fumed silica, 30 parts of aluminum hydroxide, 10 parts of lubricant, and 2 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0061] Example 5: Defrost and deodorizer 5 was prepared by using zinc oxide and epoxy silicone oil in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0062] Example 6: Defrost and deodorizer 6 was prepared by using zinc oxide and glycidyl glycerin in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent and 3 parts of bis(2,4)2 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0063] Example 7: Defrost and deodorizer 7 was prepared by using zinc oxide and stearamide in a weight ratio of 1:2. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier 1, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 7 and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0064] Example 8: Defrost and deodorizer 8 was prepared by using zinc oxide and stearamide in a weight ratio of 2:1; Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier 1, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 8 and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0065] Example 9: Defrost and deodorizer 9 was prepared by using zinc oxide and stearamide in a weight ratio of 2:2; Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier 1, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 9 and 3 parts of bis(2,4)2 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0066] Example 10: Defrost and deodorizer 1 was prepared by using zinc oxide and stearamide in a weight ratio of 1:1. Tackifier 2 was prepared using 10 parts of hydroxyl-terminated polydimethylsiloxane, 1 part of boric acid and 1 part of boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier 2, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 1 and 3 parts of bis(2,4)2 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0067] Example 11: Defrost and deodorizer 1 was prepared by using zinc oxide and stearamide in a weight ratio of 1:1. Tackifier 3 was prepared using 20 parts hydroxyl-terminated polydimethylsiloxane, 5 parts boric acid and 5 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier 3, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 1 and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0068] Comparative Example 1: Defrost and deodorizer 1 was prepared by using zinc oxide and stearamide in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 1 part of defrosting and deodorizing agent and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0069] Comparative Example 2: Defrost and deodorizer 1 was prepared by using zinc oxide and stearamide in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier 1, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 15 parts of defrosting and deodorizing agent 1 and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0070] Comparative Example 3: Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 0.1 parts of tackifier, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of zinc oxide and 3 parts of bis(2,4-dimethyl)ethylene glycol were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0071] Comparative Example 4: Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 20 parts of tackifier, 30 parts of fumed silica, 30 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of stearamide and 3 parts of bis(2,4-dimethyl)methacrylate were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0072] Comparative Example 5: Defrosting and deodorizing agent 10 was prepared by using benzyl peroxide and activated carbon at a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier 1, 30 parts of fumed silica, 8 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 12 and 3 parts of bis(2,4)2 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0073] Comparative Example 6: Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of benzyl peroxide and 3 parts of di-2,4-dimethylsiloxane were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0074] Comparative Example 7: Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 5 parts of tackifier, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of ultrafine activated carbon and 3 parts of bis(2,4)2 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0075] Comparative Example 8: Defrost and deodorizer 1 was prepared by using zinc oxide and stearamide in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 0.1 parts of tackifier 1, 30 parts of fumed silica, 20 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 1 and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0076] Comparative Example 9: Defrost and deodorizer 1 was prepared by using zinc oxide and stearamide in a weight ratio of 1:1. Tackifier 1 was prepared using 15 parts hydroxyl-terminated polydimethylsiloxane, 3 parts boric acid and 3 parts boron oxide; 40 parts of methyl vinyl silicone rubber, 20 parts of tackifier 1, 30 parts of fumed silica, 30 parts of aluminum hydroxide, 5 parts of lubricant, and 3 parts of surface treatment agent were mixed in a mixer. After extrusion, 6 parts of defrosting and deodorizing agent 1 and 3 parts of bis(2,4)24 were added and mixed evenly on a two-roll mill. The mixture was then extruded through an extruder to obtain a low-odor silicone rubber self-adhesive tape.

[0077] Table 2 summarizes the components and key preparation variables of Examples 1-11 and Comparative Examples 1-9.

[0078] Table 2. Components of Examples 1-11 and Comparative Examples 1-9

[0079] According to the specifications of JB / T10696.6-2007, the high oil-resistant and abrasion-resistant cable materials in Examples 1-11 and Comparative Examples 1-9 were tested for tensile strength, elongation at break, peel strength, breakdown strength, flame retardancy rating, oxygen index, and odor. The test standards are as follows: (1) Tensile strength and elongation at break The shape and dimensions were tested according to Part 8 of GB / T 2951.11-2008, and the mechanical properties were tested according to Part 9. The test conditions were 23±2℃, and the tensile speed was preferably 250mm / min. Five samples were tested using a universal tensile testing machine from Dongguan High-speed Railway Testing Co., Ltd., and the average value was taken.

[0080] (2) Peel strength test The shape and dimensions were tested according to Part 8 of GB / T 2951.11-2008, and the mechanical properties were tested according to Part 9. The test conditions were 23±2℃, and the tensile speed was preferably 250mm / min. Five samples were tested using a universal tensile testing machine from Dongguan High-speed Railway Testing Co., Ltd., and the average value was taken.

[0081] (3) Breakdown strength test Performance tests were conducted according to Part 10 of GB / T 2951.21-2008, with a tensile speed of 250 mm / min preferred. A universal tensile testing machine from Dongguan High-Speed ​​Railway Testing Co., Ltd. was used to test five samples, and the average value was taken.

[0082] (4) Flame retardancy rating test Performance testing shall be conducted in accordance with section 5.22 of ISO 6722, at a test temperature of 23±2℃, with 5 samples tested. The samples shall be extinguished within 70 seconds, and the carbonization distance shall be recorded.

[0083] (5) Oxygen Index Test According to GB / T 2406.2-2009, the sample size was prepared according to Type IV sample size. The test was conducted according to Method A - Top Surface Ignition Method. The oxygen index tester was performed using a device from Nanjing Jiangning District Fangshang Analytical Instrument Equipment Factory.

[0084] (6) Odor test Tests were conducted according to the HG / T 4065-2008 standard, and the odor level of the sample was assessed according to the probability of odor assessment in section 5.22.

[0085] (7) Whether the surface is frosted After preparing the low-odor silicone rubber self-adhesive tape, the temperature was changed to 25℃ and 93%RH, and the tape was left for 168 hours. The frosting on the surface of the low-odor silicone rubber self-adhesive tape was then observed.

[0086] The test results are recorded in Table 3 below: Table 3. Performance of Examples 1-11 and Comparative Examples 1-9 of the present invention

[0087] The test results above show that the low-odor silicone rubber self-adhesive tapes of Examples 1-11 have a tensile strength > 5.3 MPa, an elongation at break of 548%-690%, a peel strength ≥ 11.8 N / mm, a breakdown strength ≥ 20 kV / mm, and a flame retardant rating of FV-0 with an oxygen index > 25%. This indicates that the low-odor silicone rubber self-adhesive tapes prepared by this invention not only have good mechanical and flame retardant properties but also excellent safety and environmental protection performance. In Examples 1-11, the amount of defrosting and deodorizing agent added is 2-10 parts. The excellent safety and environmental protection performance exhibited in Examples 1-11 demonstrates that the defrosting and deodorizing agent compounded together can effectively prevent the frosting phenomenon of silicone rubber self-adhesive tapes and greatly reduce the odor of silicone rubber self-adhesive tapes, exhibiting excellent safety. Compared with Example 5, Comparative Example 1 added 1 part of defrosting and deodorizing agent 1, which is lower than the 2-10 addition range proposed in this invention. Comparative Example 2 added 15 parts of defrosting and deodorizing agent 1, which is significantly higher than the 2-10 addition range proposed in this invention. The experimental data shows that the low-odor silicone rubber self-adhesive tape prepared in Comparative Example 1 exhibits surface frosting and has an odor level of 4, indicating a strong unpleasant odor. The low-odor silicone rubber self-adhesive tape prepared in Comparative Example 2 does not exhibit surface frosting and has an odor level of 2, indicating a slight but perceptible odor. However, the tensile strength of Comparative Example 2 is 4.1 MPa, and its elongation at break is 700%, indicating that the mechanical properties of Comparative Example 2 are poor. Therefore, the data shows that only when the added defrosting and deodorizing agent is within the range proposed in this invention can a low-odor silicone rubber self-adhesive tape with excellent mechanical properties and safety and environmental protection be obtained.

[0088] In Comparative Example 3, zinc oxide was used alone instead of the defrosting and deodorizing agent of the present invention. The resulting low-odor silicone rubber self-adhesive tape had an odor level of 4, which had a strong unpleasant odor and could not meet the requirements for safety and environmental protection. In Comparative Example 4, stearamide was used instead of the defrosting and deodorizing agent of the present invention. After a 168-hour frosting test, large frosting marks appeared on the surface of the resulting low-odor silicone rubber self-adhesive tape, which seriously affected the aesthetics. The peel strength was 10.3 N / mm. Blooming would reduce the adhesiveness of the adhesive, indicating that the adhesive effect of the silicone rubber self-adhesive tape in Comparative Example 4 would be reduced when it was used for bonding.

[0089] In Comparative Example 5, 6 parts of benzyl peroxide and ultrafine activated carbon were added to replace 6 parts of the defrosting and deodorizing agent of this invention, and 8 parts of flame retardant were added. The resulting low-odor silicone rubber self-adhesive tape had an odor level of 3, indicating an odor but no strong discomfort. Small patches of slight frosting marks appeared on the surface, and its flame retardant level was 1 with an oxygen index of 24.3%, indicating poor flame retardant performance. Compared with Example 5, this shows that when the same number of parts are added, simply mixing the ordinary defrosting agent benzyl peroxide and the deodorizing agent ultrafine activated carbon cannot achieve the defrosting effect of the defrosting and deodorizing agent proposed in this invention, nor can it effectively remove sulfur by-products and odors.

[0090] In Comparative Example 6, only the defrosting agent, benzyl peroxide, was added. Experimental data showed that the elongation at break of the low-odor silicone rubber self-adhesive tape prepared in Comparative Example 6 decreased to 360%, and the peel strength was 6.9 N / mm. The benzyl peroxide alone accelerated the vulcanization process, leading to a decrease in elongation at break and thus a reduction in peel strength, failing to achieve the desired self-adhesive performance. In Comparative Example 7, only the deodorizing agent, ultrafine activated carbon, was added. Experimental data showed that the low-odor silicone rubber self-adhesive tape prepared in Comparative Example 7 exhibited frosting and had an odor level of 3, indicating an odor without strong discomfort. Its tensile strength was 4.1 MPa, and its elongation at break was 420%, indicating poor mechanical properties.

[0091] In Comparative Example 8, 0.1 parts of tackifier were added, which was too little. Compared with Example 5, the peel strength was only 2.6 N / mm, and the adhesion was poor. In Comparative Example 9, 20 parts of tackifier and 30 parts of flame retardant were added, which was too much tackifier. Compared with Example 5, the peel strength reached 2.6 N / mm, and its flame retardant performance was excellent. However, due to the excessive amount of tackifier and flame retardant, the mechanical properties of the low-odor silicone rubber self-adhesive tapes prepared in Comparative Examples 8 and 9 were seriously affected. The tensile strength was only 3.9 MPa, and the elongation at break was 230%, resulting in poor mechanical properties.

[0092] In summary, in this invention, Examples 1-11 all include a defrosting and deodorizing agent. The defrosting agent is a metal oxide of zinc oxide and magnesium oxide, and an organic acid metal salt of zinc stearate. The deodorizing agent is stearamide, hexamethylenediaminetetramethylenephosphonic acid, terminal epoxy silicone oil, and glycidyl ether. In the defrosting agent, zinc oxide, magnesium oxide, and zinc stearate contain metal ions capable of undergoing metathesis reactions with acidic byproducts such as 2,4-dichlorobenzoic acid. In the deodorizing agent, stearamide contains an amide group, and hexamethylenediaminetetramethylenephosphonic acid... Nymethylenephosphonic acid contains phosphonic acid groups, and terminal epoxy silicone oil and glycidyl ether both contain epoxy groups. These polar groups encapsulate odor-causing molecules and free blooming precursors to form stable aggregates, significantly reducing odors after vulcanization. This results in a safe and environmentally friendly product. In contrast, the single zinc oxide, single stearamide, defrosting agent dibenzylidene peroxide, and ultrafine activated carbon used in Comparative Examples 3-7 cannot form a triple synergistic mechanism of defrosting and deodorizing agents, thus failing to achieve low odor and excellent safety and environmental performance. Therefore, the low-odor silicone rubber self-adhesive tape prepared in this invention not only possesses good mechanical and flame-retardant properties but also excellent safety and environmental performance, demonstrating broad application prospects.

[0093] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the patent protection scope of the present invention.

Claims

1. A low-odor silicone rubber self-adhesive tape material, characterized in that, The ingredients of the low-odor silicone rubber self-adhesive tape material, by weight, include: 30-50 parts silicone rubber 2-10 parts defrosting and deodorizing agent 1-10 parts of tackifier 1-5 parts of vulcanizing agent, of which, The defrosting and deodorizing agent is a compound of a defrosting agent and a deodorizing agent. The defrosting agent includes at least one active site capable of undergoing a metathesis reaction with acidic substances, and the deodorizing agent is composed of a nonpolar segment and at least one polar group.

2. The low-odor silicone rubber self-adhesive tape material as described in claim 1, characterized in that, The weight ratio of the defrosting agent to the deodorizing agent is (1-2):(1-2).

3. The low-odor silicone rubber self-adhesive tape material as described in claim 1, characterized in that, The defrosting agent is an alkaline oxide, an organic acid metal salt, or an alkaline oxide and an organic acid metal salt; the deodorizing agent is stearamide, hexamethylenediamine derivative, epoxy silicone oil, or glycidyl glycerin, or two or more of stearamide, hexamethylenediamine derivative, epoxy silicone oil, and glycidyl glycerin.

4. The low-odor silicone rubber self-adhesive tape material as described in claim 1, characterized in that, The silicone rubber is methyl vinyl silicone rubber with a vinyl content of 0.1%-0.5%.

5. The low-odor silicone rubber self-adhesive tape material as described in claim 1, characterized in that, The tackifier is a low-odor borosilicate tackifier.

6. The low-odor silicone rubber self-adhesive tape material as described in claim 5, characterized in that, The tackifier is obtained by a condensation reaction of 10-20 parts hydroxyl-terminated polydimethylsiloxane, 1-5 parts boric acid, and 1-5 parts boron oxide.

7. The low-odor silicone rubber self-adhesive tape material as described in claim 1, characterized in that, The vulcanizing agent is a bis(2,4-dichloro) (DCBP) vulcanizing agent.

8. The low-odor silicone rubber self-adhesive tape material as described in claim 1, characterized in that, The low-odor silicone rubber self-adhesive tape material also includes 10-50 parts of reinforcing agent 10-30 parts flame retardant 1-10 parts lubricant Surface treatment agent 1-5 parts.

9. The low-odor silicone rubber self-adhesive tape material as described in claim 8, characterized in that, The reinforcing agent is fumed silica; the flame retardant is at least one of aluminum hydroxide, magnesium hydroxide, antimony trioxide, zinc borate, decabromodiphenyl ethane, and hydrotalcite; the lubricant is at least one of hydrogen-containing silicone oil, dimethyl silicone oil, and hydroxyl silicone oil; and the surface treatment agent is at least one of octamethylcyclotetrasiloxane, hexamethyldisilazane, silane coupling agent KH550, silane coupling agent KH560, silane coupling agent KH570, and silane coupling agent KH792.

10. A method for preparing a low-odor silicone rubber self-adhesive tape material, characterized in that, Includes the following steps: Preparation of tackifier: Mix 10-20 parts of hydroxyl-terminated polydimethylsiloxane, 1-5 parts of boric acid and 1-5 parts of boron oxide and add to a reactor. Heat to 150-170℃ and stir for 2-4 hours. After cooling, the tackifier is obtained. Preparation of low-odor silicone rubber self-adhesive tape material: Silicone rubber, tackifier, reinforcing agent, flame retardant, lubricant and surface treatment agent are mixed in an intensive mixer, and after extrusion, defrosting and deodorizing agent and vulcanizing agent are added and mixed evenly on a two-roll mill. After extrusion, a low-odor silicone rubber self-adhesive tape is obtained.

11. A low-odor silicone rubber self-adhesive tape, characterized in that, It is prepared from the low-odor silicone rubber self-adhesive tape material according to any one of claims 1-9.

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