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To ensure that the seal plays a positive role and avoid failure, the following points must be noted:Material compatibility: Rubber materials must be compatible with the medium they come into contact with (oil, water, chemicals, etc.), otherwise swelling, shrinkage, softening, or hardening may occur, leading to failure.Working temperature: Each rubber material has its applicable temperature range. Excessive temperature can accelerate rubber aging, become brittle, and lose elasticity; If it is too low, it will make the rubber harder and lose its sealing ability. Pressure: Seals must be able to withstand the working pressure of the system, and special sealing structures with retaining rings may be required for high-pressure conditions.Surface quality: The roughness, hardness, and flatness of the metal surface (such as shafts, holes) in contact with the seal are crucial. Rough or scratched surfaces can rapidly wear down seals, leading to early failure.Installation quality: Incorrect installation (such as using violence, not adding protective covers, and not paying attention to cleaning) is a common cause of seal damage before being put into use.

Silicone, as a widely used flexible material, many users are concerned about whether it will age during use? How long is the service life of silicone? How to maintain it for longer? In fact, any polymer material will experience performance degradation over long-term use, and silicone is no exception. However, the aging rate of silicone is much slower than that of materials such as rubber and plastic. This article will provide a detailed explanation of the aging reasons, service life, and scientific maintenance methods of silicone, helping everyone to extend the use time of silicone products. Silicone does experience aging, but the aging rate is very slow. The service life of silicone products in ordinary environments can usually reach 5 to 10 years, and high-quality food grade and industrial grade silicone can even be used for more than 10 years. The aging of silicone mainly manifests as surface hardening, cracking, yellowing, loss of elasticity, decreased sealing, etc. The reasons for aging mainly include long-term high temperature exposure, ultraviolet exposure, acid-base corrosion, oil contamination contact, oxidation reaction, and long-term repeated bending and extrusion. Among them, ultraviolet radiation and high temperature are the main factors accelerating the aging of silicone gel. Long term use in direct sunlight outdoors will significantly shorten the lifespan of silicone gel. The lifespan of silicone varies greatly in different usage environments. Silicone products used in indoor dark, room temperature, and dry environments, such as silicone kitchenware, silicone tableware, silicone gaskets, etc., can almost maintain long-term stability and age extremely slowly. Silicone products that are used in outdoor, high-temperature, sun exposed, and humid environments for a long time, such as silicone hoses, silicone sealing strips, outdoor silicone accessories, etc., will age relatively faster, but are still much more durable than other materials. Medical silica gel and food grade silica gel have stronger anti-aging ability because of their high purity and less additives.The correct maintenance method is crucial for delaying the aging of silicone and extending its service life. Firstly, it is necessary to avoid prolonged direct sunlight and high temperature baking. Silicone products should be placed in a cool, dry, and ventilated place as much as possible, and should not be near heat sources, open flames, or exposed areas. Secondly, it is advisable to minimize long-term contact between silicone gel and strong acid-base, chemical solvents, engine oil, diesel and other media to avoid corrosion of the surface structure and performance degradation. When cleaning, use clean water or neutral detergent, do not use highly corrosive disinfectants, air dry naturally after cleaning, and do not dry or expose to high temperatures.In addition, avoiding silicone products from being excessively stretched, squeezed, or folded for a long time and maintaining their natural shape can effectively reduce internal structural fatigue and delay aging. For industrial silicone accessories such as seals, hoses, gaskets, etc., the surface condition should be regularly inspected. If obvious hardening, cracks, or deformation occur, they should be replaced in a timely manner to avoid affecting equipment operation. Household silicone kitchenware should avoid being scratched by sharp objects, maintain surface integrity, and also improve durability. In summary, silicone will age, but at a slow pace and with a long lifespan, it can be used normally for several years or even over a decade. By understanding the causes of aging and adopting maintenance methods that avoid light, high temperatures, corrosion, and proper cleaning, the service life of silicone products can be significantly extended.

In order to improve the cold resistance of rubber materials, researchers have adopted various methods. These methods mainly include rubber copolymerization and chemical modification, rubber blending, addition of plasticizers, rational selection of vulcanization and filling systems, etc.1. Rubber copolymerization and chemical modification Rubber copolymerization and chemical modification are effective methods to improve the cold resistance of rubber materials. By introducing monomers with large side groups for copolymerization, the regularity of rubber molecular chains can be disrupted, and their Tg and Tb can be reduced. For example, introducing monomers with flexible structures into fluororubber molecules can increase the flexibility of the molecular chains, reduce intermolecular forces, and thus improve the cold resistance of fluororubber. In addition, chemical modification methods such as epoxidation and isomerization can be used to alter the structure of rubber molecular chains and improve their cold resistance.2. Rubber blending is a common method to adjust cold resistance in rubber formula design. By combining different types of rubber, their respective advantages can be comprehensively utilized to improve the cold resistance of rubber materials. For example, combining styrene butadiene rubber (SBR) with butadiene rubber (BR) can improve the cold resistance of the rubber. This is because SBR and BR have lower Tg and good molecular chain flexibility, and can still maintain a certain degree of elasticity at low temperatures.3. Adding plasticizers is one of the effective measures to improve the cold resistance of rubber materials. Plasticizers can increase the flexibility of rubber molecular chains, reduce intermolecular forces, and make molecular segments easier to move. At low temperatures, plasticizers can act as lubricants, reducing friction and resistance between rubber molecular chains, thereby improving the cold resistance of rubber. Common plasticizers include petroleum based hydrocarbon solvent plasticizers and non solvent plasticizers.

Silicone protective covers are generally made of silicone, with a soft and elastic texture, and are often used to protect electronic and digital products from accidental drops or wear. How much do you know about the function and process of silicone protective covers? Below, I will briefly explain to everyone.Silicone protective cover function1. Prevent hard objects from leaving scratches on the phone screen or body;2. Can print various colors, beautiful and generous;3. Prevent nails from being scratched or damaged by prolonged contact with buttons, and protect the screen and buttons;4. The anti slip function; And the tactile quality is very good;5. Protect your phone from accidental drops to prevent damage. production processSilicone sleeve is a silicone product produced by high-temperature molding and vulcanization process using silicone as the main raw material.Ordinary silicone sleeves need to go through the following processes:1. Raw material preparation (also known as rubber mixing): including the mixing of raw rubber, color blending, etc;2. Sulfurization molding (also known as hydraulic molding): High pressure hydraulic press is used for high-temperature vulcanization to solidify the silicone collagen material into a solid state;3. Removing burrs (also known as deburring): The silicone sleeve products that come out of the mold will have burrs and hole debris that need to be removed; Generally completed by hand, some can use a deburring machine;4. Screen printing, this process is only used for some silicone sleeve products with patterns or logos on the surface of the silicone sleeve;5. Spray oil, silicone products are easy to adsorb dust in the air and have a certain viscosity; Spray hand feel oil on the surface of the silicone sleeve, which can prevent dust and enhance the hand feel;6. Other, including providing additional functions such as dispensing glue, laser engraving, or assembling other materials and components.

From the perspective of current technology, the sealing and protection technology of many products still has certain defects in the actual process, such as waterproof sealing of our mobile phones, waterproof sealing rings of automotive lighting fixtures, etc. The use of silicone and rubber materials as sealing materials is the most common type of material. Therefore, silicone sealing rings, as a type of sealing component used in various aspects, often encounter unexpected functional problems during normal use and cannot demonstrate the effectiveness of the product. So, what are the considerable factors that affect it? Influence of hardness and softnessMany times, the different softness of silicone products can completely change the functionality and structure of the product. Therefore, due to the selection of silicone sealing rings with different hardness and softness, unavoidable problems may occur during use, such as extrusion gaps, excessive stress, high hardness, product deformation without rebound, and other factors. Gap issueThe gap problem can be divided into several factors. Firstly, it is due to the material of the rubber material. Many silicone materials have poor rebound force and insufficient tensile force due to the formula, resulting in insufficient force during use and leakage due to gaps. Processing problems of silicone ring manufacturers, such as making the product brittle and resulting in thin edge thickness, are prone to this problem. Making the product soft can cause the rubber material to have internal bulges and become immature, and long-term stretching and compression can cause deformation and gap problems. Force processO-type silicone rings are generally installed in several places, such as grooves, flat surfaces, and convex grooves. The installation method of each product is different, and its stress process will also affect the service life and function of the product. Therefore, in order to ensure the sealing performance, a reserved space is made for this storage. The different methods and stress levels of silicone rubber sealing rings are distinguished, such as how much they can withstand in flat installation and how tight they are when adjusted, and how much stress they can withstand in concave and convex surfaces, and how much size is reserved. Compress permanentlyAnother indicator for evaluating the sealing performance of O-rings is the compression permanent cross shape of the selected material. Under pressure, the O-ring as an elastic element undergoes elastic deformation, and permanent plastic deformation also occurs as the pressure increases. Usually, to prevent permanent plastic deformation, the maximum allowable compression of O-rings is about 30% in static seals and about 20% in dynamic seals. When installing silicone sealing rings in grooves, they should be subjected to tension or compression. If the values of stretching and compression are too large, it will cause an excessive increase or decrease in the cross-section of the O-ring, as stretching by 1% will reduce the diameter of the cross-section by about 0.5%. For hole seals, the O-ring is in a stretched state, allowing a tensile force of 6%. For shaft seals, the O-ring is best compressed along its circumference, allowing a circumference compression of 3%.

For silicone products (phone cases, kitchen tools, keypads), making a clear, durable logo font only requires two steps: proper font preparation and choosing a suitable processing method. This article explains it simply. Part 1: How to Make the Logo Font (Simple Preparation) No professional design skills are needed; focus on 3 key points for a clear, non-deformable font. 1. Choose simple sans-serif fonts (e.g., Arial, Helvetica) instead of fancy script/serif ones—they are clear and wear-resistant even for small logos. 2. Keep font stroke ≥0.3mm (thinner strokes break easily) and size matching the product to ensure readability. 3. Prepare vector files (AI, PDF, SVG) for the font; avoid blurry pictures (e.g., JPG) as they are the basis for processing. Part 2: Common Processing Methods (Simple Explanation + How to Choose) 6 common methods, focusing on pros, cons and suitable scenarios for easy selection. 1. Mold Emboss/Deboss (Most Common for Mass Production) Carve the logo on the mold; the logo forms with silicone vulcanization (emboss = raised, deboss = recessed). Pros: No extra cost after mold making, wear-proof, 3D touch. Cons: Same color as silicone, unchangeable once mold is made. Suitable for: Mass-produced products with simple logos (kitchenware, tool handles). 2. Screen Printing (Cheapest for Flat Surfaces) Scrape ink through a stencil onto flat silicone surfaces and dry. Pros: Low cost, bold colors, clear edges, suitable for large logos. Cons: Only for flat surfaces, surface ink wears off easily. Suitable for: Low-friction flat products (silicone mats, simple phone cases). 3. Pad Printing (Best for Curved Surfaces) Use a soft silicone pad to transfer logo ink to curved/uneven surfaces. Pros: Fits curved surfaces, supports multi-color small logos. Cons: Higher cost than screen printing, average ink durability. Suitable for: Curved products (silicone buttons, curved phone cases). 4. Laser Engraving (Most Durable for High-Use Products) Spray a base color, then laser off the top layer to reveal the logo. Pros: Extremely wear-proof, smooth surface, suitable for backlit products. Cons: Single-color only, high equipment cost, needs translucent silicone. Suitable for: High-wear/backlit products (automotive controls, medical keypads). 5. Drip Ink (Most High-End for Heavy-Use) Fill mold recesses with ink, cure to embed the 3D logo in silicone. Pros: Indestructible, strong 3D sense, high-grade. Cons: Slow process, high cost, simple fonts only. Suitable for: High-end heavy-use products (industrial keypads, luxury accessories). 6. UV/Digital Printing (Best for Full-Color Logos) Print directly with UV ink, cured instantly by UV light. Pros: Full-color complex logos, no stencils needed, suitable for small batches. Cons: Higher cost, average durability, not for frequent friction. Suitable for: Premium products with complex logos (custom gifts, high-end phone cases).

Many people who have come into contact with silicone products know that some silicone products are prone to sticking to dust. So why do silicone products prefer to stick to dust? I believe friends who have used silicone products will have this question, especially the commonly seen silicone phone cases, silicone wallets, etc. in our daily lives, which are often prone to dust and difficult to clean. So, what are the reasons why silicone products stick to dust? In fact, the adsorption force of silicone products is a constant characteristic of silicone materials. Most silicone products have some dust adsorption function, but some silicone products undergo special processes before leaving the factory to make them non stick to dust. For example, in the production of silicone products, they generally need to be treated with oil spray. After the oil spray treatment, silicone sleeves and other silicone products will not be dusty, even if accidentally dropped on the ground, they will not easily get dusty. Therefore, when purchasing some consumer goods, you can choose some silicone products that have been treated with oil spray, so that they have a good grade in terms of feel and texture. Industrial accessories or electronic accessories are simple silicone products. There's no need to be so particular, So everyone still needs to refer to it when selecting silicone products.

1. Verify the feasibility of product design and structureDiscovering design flawsSilicone material is soft and elastic, and many structures that appear reasonable on the drawing may have problems such as uneven wall thickness, inability to demold due to inverted buckles, and improper placement of parting lines after actual molding.Sample molds can expose these risks in advance at a lower cost, avoiding huge losses caused by directly opening large molds.Verify assembly relationshipsSilicone parts usually need to be matched with plastic shells, metal parts, PCB boards, etc. The physical object made from the sample mold can be tested during actual installation to confirm whether the size fit, button stroke, sealing effect, etc. meet the standards. 2. Confirm material and process parametersMaterial selection verificationSilicone with different hardness (Shore A 30~80) has significant differences in shrinkage, flowability, and resilience.The actual shrinkage rate can be tested through sample molds, providing accurate data for compensating the cavity size of formal molds.Exploration of Process WindowThe parameters such as vulcanization temperature, time, and pressure have a significant impact on the appearance and performance of silicone products.The sample mold stage can optimize the process curve, determine the optimal production conditions, and reduce the debugging time and scrap rate during formal mass production.3. Evaluate appearance and feelSurface treatment effectSurface treatment processes such as spray painting, laser engraving characters, and silk screen patterns need to be validated on real products.Sample molds can be used to create templates with various surface treatments for customers to confirm before finalizing.Touch and operation experienceFor products such as remote control buttons and sealing rings, indicators such as press rebound feel and compression permanent deformation must be accurately evaluated through physical experience. SummaryThe essence of opening sample molds is to trade controllable small costs for design certainty and production reliability. It is not an unnecessary step, but a risk buffer zone connecting the design drawings and mass production molds, especially for materials such as silicone that are sensitive to mold accuracy, material properties, and process parameters. It is an essential step.

With the advancement of technology and the rapid development of the economy, in recent years, silicone materials have been widely used in various industries, especially in the application of maternal and child products, replacing plastic and glass materials. It is healthy, environmentally friendly, non-toxic, and odorless. Food grade materials can be used for baby bottles, dental implants, toys, etc. Medical grade silicone material can be implanted into the human body and is biocompatible. The high-quality characteristics of silicone make it suitable for all aspects of our lives. 1. Silicone is a material with a feeling similar to human skin, and a good baby silicone product should first have a good hand feel. Here we take a silicone baby bottle as an example. When feeding a baby, the baby's cute little hands hold the bottle, and the touch of the bottle on the baby is like a mother's loving touch. After the baby is born and leaves their original growth environment, the baby lacks a sense of security. Some babies often cry and make us feel helpless as new parents. However, silicone baby products that feel like a mother's touch give babies this sense of security. Therefore, good baby silicone products are beneficial for the development of babies in all aspects. This is also incomparable to other materials of milk bottles. 2. Silicone milk bottles should be easy to use. Disassembly and assembly should be convenient, universal, and interchangeable with other pacifiers and baby bottles. Some silicone baby bottles are now impractical to disassemble and assemble. Install card slots and set card patterns between the silicone and the plastic cover in the middle. The most important aspect of a bottle is its practicality and convenience. Performance and material of baby silicone products1. If the surface of real silicone rubber is not specially treated, it will feel relatively smooth to the touch because there is a layer of oily substance on the surface layer2. Fake silicone rubber is prone to deformation, while real silicone rubber has good rebound and is not easily deformed after pulling and rebounding.3. Good silicone has no odor and does not soften or change color when exposed to heat.4. Cut off a little bit of silicone and burn it with fire. The edge of the fake silicone rubber wristband is black after being burned. The fake silicone rubber burns with an open flame, producing black smoke and a foul odor. But for real silicone, regardless of the color of the silicone, the burning edge is white, and the burning residue is powder. And the real silicone rubber wristband burns like carbon, with even flames. White smoke, odorless.5. Look at the resilience of silicone products, high-quality silicone products have good resilience. Silicone material itself has good wear resistance, therefore, the surface of silicone products has the ability to resist wear and tear. Generally speaking, high-quality silicone products will not erase surface text, color, etc. due to external factors. On the contrary, the text, characters, and logos on the surface of inferior silicone products are more likely to fall off. High quality silicone products have a bright color, and after special processing, the surface is non sticky, odorless, soft, and has a good hand feel.6. Silicone products have high tear resistance, long service life, and are not easily affected by external environmental interference. Generally speaking, high-quality silicone products are less prone to cracking during the tearing process, while low-quality silicone products are more prone to cracking. When subjected to force, low-quality silicone products will quickly expand and crack from the crack.7. When silicone products are subjected to alternating stress (or strain) effects, the phenomenon of changes in the structure and function of the data is called fatigue. The scene of silicone product damage caused by the process of fatigue is called fatigue damage. So fatigue resistance is also one of the ways to distinguish the quality of silicone products.

In many fields such as industrial production, household daily use, electronic accessories, etc., waterproof performance is one of the core indicators to measure the quality of silicone products. Waterproof silicone parts, with excellent sealing characteristics, have become key accessories to solve equipment water leakage and material moisture problems. The reason why silicone products have excellent waterproof performance lies in the molecular structure and physical properties of their material itself. Firstly, silicone belongs to the category of polymer elastic materials. After curing, its structure is dense and free from the problem of fine pore penetration. It can effectively block the invasion of moisture and water vapor, and maintain stable waterproof sealing effect in both room temperature and high and low temperature environments. Secondly, high-quality silicone material has extremely strong weather resistance, and long-term exposure to environmental factors such as water, humid air, and ultraviolet radiation will not cause aging, cracking, deformation, and other problems. Its waterproof performance will last for a long time without deterioration. At the same time, silicone products can adjust their hardness and elasticity according to their usage scenarios. After compression and bending, they can quickly return to their original state and tightly connect with the bonding surface, further improving the waterproof sealing effect. Whether it is electronic silicone accessories, bathroom silicone seals, or outdoor waterproof silicone sleeves, they can meet the waterproof needs of different scenarios.For users with customized needs, mastering the processing techniques of waterproof silicone parts is essential to maximize the waterproof performance of the product. In the early stage of customization, it is necessary to clarify the product's usage environment, including parameters such as water pressure, temperature, and contact medium, in order to select silicone raw materials corresponding to food grade, industrial grade, high temperature resistance, etc., and ensure the basic waterproof performance from the source. Mold design is a key step in customizing waterproof silicone parts, requiring precise control of dimensional tolerances and sealing structures. The use of integrated molding technology reduces splicing gaps and avoids water leakage problems caused by structural defects. During the processing, it is necessary to strictly control the vulcanization temperature and time to ensure that the silicone material is completely cured, improve the density of the material, and optimize the sealing effect through surface treatment technology to ensure that the waterproof performance meets the usage standards. In addition, waterproof testing is required during the customized sampling stage, and process parameters are adjusted based on the test results to ensure stable performance of mass-produced products.The application scenarios of waterproof silicone parts are very wide, ranging from mobile phone waterproof silicone covers and bathroom sealing rubber rings to industrial equipment waterproof silicone accessories and underwater instrument silicone seals, all of which rely on high-quality waterproof silicone materials. When customizing, users should not only focus on processing techniques, but also choose manufacturers with professional production qualifications and rich experience to ensure that raw materials are environmentally friendly, processes meet standards, and testing is complete. Silicone products have inherent waterproof advantages due to their dense structure, high elasticity, and weather resistance. Customized waterproof silicone parts require a combination of various skills such as raw material selection, mold design, and process control to create high-performance waterproof products. Understanding these knowledge can not only help users clearly understand the waterproof characteristics of silicone, but also avoid detours in the customization process, and customize waterproof silicone parts that meet their own needs and have reliable quality.