Oil-resistant VR equipment eye washer and preparation method thereof

Abstract

The invention relates to the field of sealing materials, in particular to an oil-resistant VR (virtual reality) equipment eye washer and a preparation method thereof. The silicone rubber comprises the following raw materials in parts by weight: 100 parts of raw silicone rubber, 10-30 parts of TPEE, 10-30 parts of white carbon black, 1-10 parts of modified glass hollow microspheres, 1-5 parts of a vulcanizing agent, 2-5 parts of a compatilizer and 0-5 parts of a processing aid. The modified glass hollow microbeads are obtained by performing surface treatment on glass hollow microbeads through an oil-resistant treating agent; and the oil-resistant treatment agent is prepared from long-chain alkenyl silane, bis-3-methyl allyl oxygen propyl tetramethyl disiloxane and alkyne glycol polyoxyethylene ether. Modified glass hollow microbeads are treated by an oil-resistant treating agent composed of long-chain alkenyl silane, bis-3-methallyl oxypropyl tetramethyldisiloxane and alkynediol polyoxyethylene ether to achieve a synergistic effect, and then the modified glass hollow microbeads are combined with TPEE, a compatilizer and the like, so that the obtained gasket has better physical properties, self-cleaning property and sweat and grease tolerance.

Description

Technical Field

[0001] This application relates to the field of sealing materials, and more specifically, it relates to an oil-resistant eye gasket for VR devices and a method for preparing the same. Background Technology

[0002] In today's rapidly developing technological landscape, Virtual Reality (VR) technology, as a prime example of cutting-edge technology, is transforming various fields such as entertainment, education, healthcare, and industrial design at an unprecedented pace. With the widespread application of VR technology, the requirements for comfort, durability, and hygiene in smart wearable devices are becoming increasingly stringent. As a crucial sealing component that comes into direct contact with the user's face, the performance of the eye pads in VR devices directly impacts the user experience and the overall quality of the device. An ideal VR device eye pad not only needs excellent fit and cushioning performance to ensure user comfort and reduce pressure and discomfort around the eyes, but also needs to withstand the long-term erosion of complex media such as sweat, sebum, and cosmetic residue.

[0003] Currently, mainstream VR eye pads primarily use two types of polymer materials: polyurethane (PU) and silicone. Polyurethane possesses a unique microphase separation structure between its soft and hard segments. This structure endows it with excellent elasticity and mechanical strength, allowing eye pads made of polyurethane to adapt to different users' facial contours to a certain extent, providing good cushioning and sealing. Silicone eye pads can effectively resist the erosion of sweat and oil in the short term, maintaining good performance. To address the issues of insufficient oil resistance or easy surface contamination of existing materials, some improvement solutions exist, such as surface fluorination treatment or the addition of fluorinated materials or monomers to reduce oil adhesion.

[0004] However, the polar groups in the molecular chains of polyurethane materials easily form hydrogen bonds with water molecules in sweat, causing the material to swell. Oil molecules can then penetrate the material, disrupting intermolecular forces. Silicone materials, on the other hand, have flexible molecular chains, making their surfaces prone to electrostatic adsorption, particularly for dust particles and oil droplets. Furthermore, the non-polar nature of silicone makes it difficult to completely remove adsorbed dirt with conventional cleaning agents; repeated wiping not only fails to clean effectively but also accelerates surface structuring, further exacerbating dirt accumulation. Additionally, fluorinated compounds pose environmental persistence and bioaccumulation risks, contradicting green environmental trends. These issues severely impact user experience and device lifespan, becoming a key factor hindering the further development of VR technology. Summary of the Invention

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide an oil-resistant eye pad for VR devices and its preparation method. In a first aspect, this application provides an oil-resistant eye pad for a VR device, comprising the following raw materials in parts by weight: 100 parts of raw silicone rubber, 10-30 parts of TPEE, 10-30 parts of silica, 1-10 parts of modified hollow glass microspheres, 1-5 parts of vulcanizing agent, 2-5 parts of compatibilizer, and 0-5 parts of processing aid; wherein the modified hollow glass microspheres are obtained by surface treatment of hollow glass microspheres with an oil-resistant treatment agent; wherein the oil-resistant treatment agent is composed of long-chain alkenylsilane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylenol polyoxyethylene ether.

[0006] By adopting the above technical solution, silicone rubber raw material and TPEE form a complementary compound system under the action of a compatibilizer. This system combines the resistance of silicone rubber to sweat, oil, and cosmetic residues with the high elasticity of TPEE, giving the gasket a self-cleaning effect and excellent compression resilience, making the VR device more closely and comfortably contact the eyes. Modified glass hollow microspheres are treated with an anti-oil treatment agent, which facilitates migration to the surface to form an anti-oil and anti-corrosion layer, reducing the gasket's resistance to sweat, oil, and chemicals, and improving its self-cleaning ease of cleaning and physical properties. Silica, vulcanizing agents, and processing aids help to promote the formation of a more stable, highly cross-linked network structure of silicone rubber-TPEE-modified glass hollow microspheres, improving the gasket's elasticity, strength, and chemical resistance. When used in VR device eye gaskets, it can have good resistance to sweat and oil, providing durability. Furthermore, the raw material system of this application does not contain pollutants such as fluorine, making it environmentally friendly.

[0007] Preferably, the long-chain alkenylsilane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylacetonate polyoxyethylene ether are composed in a weight ratio of (1-3):(2-5):1.

[0008] By adopting the above technical solution, long-chain alkenyl silane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylenol polyoxyethylene ether are combined in a weight ratio of (1-3):(2-5):1. The three components can work synergistically. The long-chain alkenyl silane reacts with the hydroxyl groups on the surface of the glass hollow microspheres to form a bonding layer fixing agent. Bis-3-methylpropenyloxypropyltetramethyldisiloxane reduces interfacial tension and promotes dispersion. Acetyloxylenol polyoxyethylene ether improves wetting and dispersibility and prevents agglomeration. This makes it easy for the modified glass hollow microspheres to migrate to the surface and form an anti-oil and anti-corrosion layer, further reducing the risk of the gasket being susceptible to sweat, grease, and chemicals, and improving the gasket's self-cleaning, easy-to-clean properties and physical performance. Meanwhile, silicone rubber raw material, TPEE, silica, modified glass hollow microspheres, vulcanizing agent, compatibilizer, and processing aids are combined. The compatibilizer reduces the interfacial tension between silicone rubber raw material and TPEE, promoting fusion and forming a complementary compound system. With the assistance of silica, vulcanizing agent, and processing aids, a stable and highly cross-linked network structure is formed, giving the gasket both the chemical resistance of silicone rubber and the high elasticity of TPEE. It has a self-cleaning effect and excellent compression resilience, making it more closely and comfortably in contact with the eyes. When used as eye gaskets for VR devices, it can have good resistance to sweat and oil, providing durability.

[0009] Preferably, the long-chain alkenylsilane is vinyltris(2-methoxyethoxy)silane and / or heptadecenyltrimethoxysilane.

[0010] By employing the above technical solution, vinyltris(2-methoxyethoxy)silane and / or heptadecenyltrimethoxysilane are used as long-chain alkenyl silanes as anti-oil treatment agents. These agents can surface-treat glass hollow microspheres to obtain modified glass hollow microspheres. The long-chain alkenyl silanes can react with the hydroxyl groups on the microsphere surface to form a bonding layer to fix the treatment agent. Furthermore, they synergistically promote microsphere dispersion, improve wetting and dispersibility, and prevent agglomeration in conjunction with bis-3-methylpropenyloxypropyltetramethyldisiloxane and acetylacetonate polyoxyethylene ether. The modified hollow glass microspheres easily migrate to the gasket surface, forming an anti-oil and anti-corrosion layer, reducing the risk of the gasket being corroded by sweat, grease, and chemicals, and improving the gasket's self-cleaning and easy-to-clean properties and physical performance. At the same time, the combination with compatibilizers allows the silicone rubber raw rubber and TPEE compound system to play complementary advantages, giving the gasket a self-cleaning effect and excellent compression resilience. With the assistance of silica, vulcanizing agents, and processing aids, a stable and highly cross-linked network structure is formed, which improves the gasket's elasticity. When used in VR device eye gaskets, it can have good resistance to sweat, grease, etc., providing durability.

[0011] Preferably, the long-chain alkenylsilane is composed of vinyltris(2-methoxyethoxy)silane and heptadecenyltrimethoxysilane.

[0012] By employing the above technical solution, long-chain alkenyl silanes composed of vinyltris(2-methoxyethoxy)silane and heptadecenyltrimethoxysilane, combined with bis-3-methylpropenyloxypropyltetramethyldisiloxane and acetylenol polyoxyethylene ether in the anti-oil treatment agent, can be used to treat the surface of glass hollow microspheres. The long-chain alkenyl silane reacts with the hydroxyl groups on the surface of the microspheres to form a bonding layer, fixing the treatment agent. Bis-3-methylpropenyloxypropyltetramethyldisiloxane reduces interfacial tension and promotes dispersion, while acetylenol polyoxyethylene ether improves wetting and dispersibility and prevents agglomeration. The modified glass hollow microspheres easily migrate to the gasket surface, forming an anti-oil and anti-corrosion layer, reducing the risk of gasket corrosion from sweat, grease, and chemicals, and improving the gasket's self-cleaning ease of cleaning and physical properties. Furthermore, it works in conjunction with raw silicone rubber, TPEE, silica, vulcanizing agents, compatibilizers, and processing aids. The compatibilizer reduces the interfacial tension between the raw silicone rubber and TPEE, promoting molecular penetration and fusion to form a complementary compound system. Combined with the effects of other materials, it forms a more stable, highly cross-linked network structure, improving the elasticity and chemical resistance of the gasket. When used in eye gaskets for VR devices, it exhibits good resistance to sweat and oil, enhancing its durability and allowing for a closer and more comfortable contact between the VR device and the eyes.

[0013] Preferably, the raw silicone rubber is one or more of vinyl silicone rubber, phenyl silicone rubber, and methyl silicone rubber.

[0014] By adopting the above technical solution, it is clarified that the raw silicone rubber can be selected from one or more of vinyl silicone rubber, phenyl silicone rubber, and methyl silicone rubber. Combined with other raw material components in claim 1, the gasket forms a silicone rubber-TPEE compound system under the action of a compatibilizer. This system combines the advantages of silicone rubber's chemical resistance and TPEE's elastic strength, giving the gasket a self-cleaning effect and excellent compression resilience. At the same time, it is combined with modified glass hollow microspheres, silica, vulcanizing agents, processing aids, etc., and forms a stable, highly cross-linked network structure through cross-linking and vulcanization. When used in VR device eye gaskets, it can have good resistance to sweat, oil, etc., providing durability.

[0015] Preferably, the density of the silica is greater than the density of the hollow microspheres in the modified glass hollow microspheres.

[0016] By adopting the above technical solution, when preparing oil-resistant VR device eye gaskets, if the density of silica is greater than the density of hollow microspheres in modified glass microspheres, it helps to form a specific distribution state during material mixing and other processes. When combined with other raw materials, the gasket forms a more stable highly cross-linked network structure after cross-linking and vulcanization. When used in VR device eye gaskets, it can have better resistance to sweat, oil, etc., thus providing durability.

[0017] Preferably, the silica is surface-modified silica treated with an anti-oil agent.

[0018] By adopting the above technical solution, based on the oil-resistant VR device eye gasket composed of silicone rubber raw rubber, TPEE, silica, modified glass hollow microspheres, vulcanizing agent, compatibilizer, and processing aids, the silica is surface-treated with an oil-resistant agent to form surface-modified silica. Combined with the effect of modified glass hollow microspheres, the gasket's oil resistance and corrosion resistance can be further improved, enhancing its self-cleaning and easy-to-clean properties as well as its physical properties. At the same time, under the action of vulcanizing agents, the gasket can form a more stable highly cross-linked network structure. When used in VR device eye gaskets, it can have better resistance to sweat and oil, providing durability.

[0019] Preferably, the compatibilizer is a styrene-isoprene-styrene block copolymer and / or maleic anhydride-grafted POE.

[0020] By adopting the above technical solution, styrene-isoprene-styrene block copolymer and maleic anhydride-grafted POE can be used as compatibilizers to reduce the interfacial tension between TPEE and silicone rubber raw rubber, thereby improving their compatibility. It also shows certain performance in terms of antifouling and self-cleaning. Furthermore, maleic anhydride-grafted POE, based on the low surface energy characteristics of polydimethylsiloxane, has more significant advantages in terms of resistance to water pollutants and self-cleaning. Combined with modified glass hollow microspheres, it can improve the overall performance of the gasket.

[0021] Preferably, the processing aid is one or more of the following: antibacterial agent, hydroxyl silicone oil, silazane, and colorant.

[0022] By adopting the above technical solution, one or more of the following are selected as processing aids: antibacterial agent, hydroxyl silicone oil, silazane, and colorant. The antibacterial agent enhances the antibacterial performance of the gasket, ensuring user eye hygiene. Hydroxyl silicone oil and silazane help promote the formation of a more stable, highly cross-linked network structure of silicone rubber-TPEE-modified glass hollow microspheres, improving the gasket's elasticity, strength, and chemical resistance, making the gasket more dimensionally stable, better in shape retention, and able to withstand external pressure and chemical corrosion. The colorant can meet the different color requirements of the gasket. Furthermore, under the action of the compatibilizer, the silicone rubber raw rubber and TPEE can form a complementary compound system, combining the chemical resistance of silicone rubber and the high elasticity of TPEE, giving the gasket a self-cleaning effect and excellent compression resilience. The modified glass hollow microspheres, after being treated with a specific anti-oil treatment agent, easily migrate to the surface to form an anti-oil and anti-corrosion layer, reducing the risk of the gasket's resistance to sweat, grease, and chemicals, improving self-cleaning ease of cleaning and physical properties. When used in eye gaskets for VR devices, it can have good resistance to sweat and grease, providing durability.

[0023] Secondly, this application provides a method for preparing an oil-resistant eye gasket for VR devices, which is prepared by the following method: according to the weight parts, raw silicone rubber, silica, and processing aids are weighed and mixed to obtain mixture A; TPEE, modified glass hollow microspheres, and compatibilizer are weighed and mixed to obtain mixture B; mixture B is added to mixture A in batches, mixed evenly, and cooled to obtain mixture C; mixture C is rolled evenly with a vulcanizing agent to obtain mixture D; mixture D is vulcanized and shaped to obtain the eye gasket for VR devices.

[0024] By adopting the above technical solution, silicone rubber raw material, fumed silica, processing aids, TPEE, modified glass hollow microspheres, and compatibilizer are first mixed separately to obtain mixtures A and B. Then, mixture B is added to mixture A in batches and heated to melt and mix the TPEE, which can promote the full integration of the raw materials. The compatibilizer is used to reduce the interfacial tension between silicone rubber raw material and TPEE, forming a complementary compound system. Subsequently, a vulcanizing agent is added and rolled and vulcanized to set the shape, which can promote the formation of a more stable and highly cross-linked network structure of silicone rubber-TPEE-modified glass hollow microspheres, improve the elasticity, strength and chemical resistance of the gasket, make the gasket size more stable, have better shape retention, and have stronger ability to withstand external pressure and chemical corrosion. The final VR device eye gasket has the characteristics of being oil-resistant and easy to clean, as well as self-cleaning effect and excellent compression resilience, making it more closely and comfortably in contact with the eyes and enhancing its practicality.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By using a compatibilizer to fuse raw silicone rubber with TPEE, a compound system is formed that combines the chemical resistance of silicone rubber with the elastic strength of TPEE. The gasket has a self-cleaning effect and excellent compression resilience, improving wearing comfort and sealing performance. 2. The modified glass hollow microspheres are treated with an anti-oil treatment agent composed of long-chain alkenylsilane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylacetonate polyoxyethylene ether. The three raw materials work synergistically to make the microspheres easily migrate to the surface to form an anti-oil and anti-corrosion layer, reducing the risk of the gasket being corroded by sweat, grease, and chemicals, improving self-cleaning and easy-to-clean properties and physical properties, and further improving the overall performance. 3. Silicone rubber, TPEE, modified glass hollow microspheres, etc. are cross-linked and vulcanized with the assistance of fumed silica, vulcanizing agent, and processing aids to form a stable and highly cross-linked network structure, which improves the elasticity and durability of the gasket. When used in eye gaskets for VR devices, it can have good resistance to sweat, oil, etc., thus improving its durability. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the embodiments.

[0027] Sources of some raw materials: Hollow glass microspheres: density, basis weight; Silica: Particle size 0.1-2 micrometers; TPEE: The molecular structure of TPEE consists of polybutylene terephthalate (PBT) hard segments and aliphatic polyester or polyether soft segments, with a number average molecular weight of 1500-2000 and a Shore hardness of 45A. The raw silicone rubber is vinyl silicone rubber with a number average molecular weight of 100,000-200,000 and a vinyl content of 1.1-1.5%. Acetylene glycol polyoxyethylene ether CAS: 9014-85-1; Styrene-isoprene-styrene block copolymer, KRATON SISD1114P (USA); Maleic anhydride grafted onto POE Mitsui MA8510 (Japan); The antibacterial agent is nano-silver antibacterial agent, CAS number 7440-22-4; Hydroxysilicone oil, Shandong Juneng Chemical Co., Ltd., model JN-204; The silazane is hexamethyldisilazane; The pigment is 2000 mesh carbon black. Example

[0028] Example 1 An oil-resistant eye pad for VR devices is prepared by the following method: Weigh 100 parts of vinyl silicone rubber raw rubber, 30 parts of silica, and 5 parts of processing aids by weight and put them into an internal mixer. Heat the mixture to 120°C at 5 min / ℃ and mix them thoroughly to obtain mixture A. Weigh 10 parts TPEE, 1 part modified glass hollow microspheres, and 2 parts compatibilizer and put them into another internal mixer. Heat at 10 min / ℃ until TPEE is completely melted and the materials are mixed evenly. Then cool down to 120℃ to obtain mixture B. Add mixture B to mixture A in 3 batches, mixing evenly each time before adding the next batch. After complete mixing, heat to 160℃ and stir for 30 min. Cool down to 120℃ to obtain mixture C. Mix it with 5 parts vulcanizing agent (Double 25) in a two-roll mixer to obtain mixture D. Put mixture D into a mold and vulcanize and shape it at 150℃ for 5 min. Demold to obtain the VR device eye gasket.

[0029] The long-chain alkenyl silane is vinyltris(2-methoxyethoxy)silane; the compatibilizer is styrene isoprene styrene block copolymer; the processing aid consists of antibacterial agent, hydroxyl silicone oil, silazane, and colorant in a weight ratio of 1:7:1:1.

[0030] The modified glass hollow microspheres are obtained by uniformly mixing glass hollow microspheres and an anti-oil treatment agent at a weight ratio of 10:1; and the anti-oil treatment agent is composed of long-chain alkenylsilane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylacetonate polyoxyethylene ether; the silica is surface-treated silica, and is obtained by uniformly mixing silica and the anti-oil treatment agent at a weight ratio of 10:0.33.

[0031] Example 2-3 The difference between Examples 2-3 and Example 1 lies in the amount of raw materials used, as shown in Table 1. Table 1. Amounts (parts by weight) of raw materials used in Examples 1-3 Example 4 The difference between Example 4 and Example 2 is that the long-chain alkenyl silane is heptadecanyltrimethoxysilane.

[0032] Example 5 The difference between Example 5 and Example 2 is that the long-chain alkenylsilane is composed of vinyltris(2-methoxyethoxy)silane and heptadecenyltrimethoxysilane.

[0033] Example 6 The difference between Example 6 and Example 5 is that the compatibilizer is maleic anhydride grafted with POE.

[0034] Example 7 The difference between Example 7 and Example 5 is that the compatibilizer is composed of styrene-isoprene-styrene block copolymer and maleic anhydride-grafted POE.

[0035] Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that TPEE was replaced with an equal amount of raw silicone rubber.

[0036] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the modified glass hollow microspheres were replaced with an equal amount of silica.

[0037] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that the long-chain alkenylsilane is replaced in equal amounts with bis-3-methylpropenyloxypropyltetramethyldisiloxane.

[0038] Comparative Example 4 The difference between Comparative Example 4 and Example 1 is that bis-3-methylpropenyloxypropyltetramethyldisiloxane is replaced by an equal amount of long-chain olefin silane.

[0039] Comparative Example 5 The difference between Comparative Example 5 and Example 1 is that acetylenic diol polyoxyethylene ether is replaced by an equal amount of long-chain alkenyl silane.

[0040] Comparative Example 6 The difference between Comparative Example 6 and Example 1 is that the anti-oil treatment agent was replaced with KH550 in equal amounts.

[0041] Performance testing Detection methods / test methods 1) Self-cleaning test: Mixture D is placed in a mold and then vulcanized at 150℃ for 5 minutes. After demolding, sample A with dimensions of 2cm*5cm*0.2mm is obtained. This sample is then immersed in the treatment agent for 2 hours. After removal, the sample is rinsed with water and dried with a hair dryer to obtain sample B. The contact angles of samples A and B are then tested (the average value of the three test areas is taken). The absolute value of the difference between the two contact angles is calculated. If the absolute value is less than 2°, it is considered qualified; otherwise, it is unqualified. The contact angle test is conducted in accordance with GB / T 30693-2014.

[0042] The treatment agent is composed of artificial sweat, 2000-mesh silica powder, and face cream in a weight ratio of 10:1:1.

[0043] The artificial sweat solution is prepared by mixing NaCl 5g / L, lactic acid 1g / L, urea 1g / L, and Na2HPO4 0.25g / L evenly, then adding ammonia to adjust the pH to 4.7, and finally adding water for standardization.

[0044] The main ingredients of the face cream are hyaluronic acid, glycerin, amino acids, and squalane in a weight ratio of 1:3:1:3.

[0045] Water rinsing conditions: such as water flow velocity of 5m / s, pressure of 0.3MPa, temperature of 25℃, and rinsing time of 2 minutes.

[0046] Durability test: Sample preparation (dumbbell-shaped sample) was carried out in accordance with GB / T 528-2009 standard. The resulting sample C was obtained by placing the mixture D into a mold, then vulcanizing and shaping it at 150℃ for 5 minutes, and then demolding it to obtain sample C. Sample C was then immersed in the treatment agent in 1) at 85℃ for 1000 hours, rinsed, and the rinsing process was the same as in 1). The surface moisture was dried with a hair dryer to obtain sample B. The appearance changes of the gasket (such as expansion, shrinkage, dissolution, corrosion, etc.) were observed. The tensile strength of sample C and sample D were then tested separately, and the residual tensile strength of sample D was calculated.

[0047] 3) Compression resilience test: Sample preparation was carried out in accordance with GB / T 7759.1-2015. The mixture D obtained from Examples 1-7 and Comparative Examples 1-6 was placed into the mold and then vulcanized and shaped at 150℃ for 5 minutes. After demolding, sample E was obtained and the compression resilience of sample E was tested.

[0048] The specific data is shown in Table 2. Table 2 Experimental data of Examples 1-7 and Comparative Examples 1-6 Combining Example 1 and Comparative Examples 1-6 with Table 1, it can be seen that the self-cleaning properties of Comparative Examples 1-6 are all unqualified, and the compression resilience and tensile strength residual rate are both lower than those of Example 1. This indicates that the modified glass hollow microspheres of this application are treated with an anti-oil treatment agent composed of long-chain alkenylsilane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylacetonate polyoxyethylene ether, and further combined with TPEE, silica, and processing aids of this application to provide comprehensive performance. This results in a gasket with better self-cleaning properties, resistance to sweat and oil, and better resilience. When used as an eye gasket for VR devices, it can fit the skin better, provide comfort, and has better ease of cleaning and tolerance.

[0049] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An oil-resistant eye pad for VR devices, characterized in that, It consists of the following raw materials in parts by weight: 100 parts of raw silicone rubber TPEE 10-30 copies 10-30 parts of silica 1-10 parts of modified glass hollow microspheres 1-5 parts of vulcanizing agent 2-5 parts compatibilizer Processing aids: 0-5 parts; The modified glass hollow microspheres are obtained by surface treatment of glass hollow microspheres with an anti-oil treatment agent; the anti-oil treatment agent is composed of long-chain alkenylsilane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylacetonate polyoxyethylene ether.

2. The oil-resistant VR device eye pad according to claim 1, characterized in that: The composition of the long-chain alkenylsilane, bis-3-methylpropenyloxypropyltetramethyldisiloxane, and acetylacetonate polyoxyethylene ether is in the weight ratio of (1-3):(2-5):

1.

3. The oil-resistant VR device eye pad according to claim 1, characterized in that: The long-chain alkenylsilane is vinyltris(2-methoxyethoxy)silane and / or heptadecenyltrimethoxysilane.

4. The oil-resistant VR device eye pad according to claim 3, characterized in that: The long-chain alkenylsilane is composed of vinyltris(2-methoxyethoxy)silane and heptadecenyltrimethoxysilane.

5. The oil-resistant VR device eye pad according to claim 1, characterized in that: The raw silicone rubber is one or more of vinyl silicone rubber, phenyl silicone rubber, and methyl silicone rubber.

6. The oil-resistant VR device eye pad according to claim 1, characterized in that: The density of the silica is greater than the density of the hollow microspheres in the modified glass microspheres.

7. The oil-resistant VR device eye pad according to claim 1, characterized in that: The silica is a surface-modified silica that has undergone surface treatment with an anti-oil agent.

8. The oil-resistant VR device eye pad according to claim 7, characterized in that: The compatibilizer is a styrene-isoprene-styrene block copolymer and / or maleic anhydride-grafted POE.

9. The oil-resistant eye pad for VR devices according to claim 1, characterized in that: The processing aid is one or more of the following: antibacterial agent, hydroxyl silicone oil, silazane, and colorant.

10. A method for preparing an oil-resistant eye pad for a VR device as described in any one of claims 1-9, characterized in that, It is prepared by the following method: According to the weight parts, weigh the raw silicone rubber, fumed silica, and processing aids and mix them to obtain mixture A; weigh TPEE, modified glass hollow microspheres, and compatibilizer and mix them to obtain mixture B. Add mixture B to mixture A in batches, mix evenly, cool, and obtain mixture C. Roll and mix it evenly with vulcanizing agent to obtain mixture D. Vulcanize and shape mixture D to obtain the eye gasket for VR equipment.

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