| Customization: | Available |
|---|---|
| Material: | Organic Silicone |
| Application: | Household, Medical, Industrial, Agricultural |
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1. Raw Material Preparation and Pretreatment
1. Main Material Selection
Select the supreme raw rubber that aligns perfectly with your product's intent. Whether it’s the unparalleled elasticity of natural rubber, the robust oil resistance of nitrile rubber, or the extraordinary high-temperature resilience of silicone rubber, we provide an elite range of options.
2. Compound Agent Dispensing
Elevate the rubber's capabilities by expertly incorporating vulcanizers such as sulfur or peroxide, along with promoters, anti-aging agents, and fillers like carbon black. We guarantee precision with an error margin as low as 0.1%, ensuring optimal performance.
3. Treatment of Reinforcement Materials
To achieve optimal binding strength, each skeletal material—whether steel wire or fiber—is carefully pretreated. This involves an immersion in rubber and a controlled drying process at 60-70°C, ensuring superior integration with the rubber.
2. Plastic Refining Process
By utilizing advanced mechanical extrusion and thermal oxidative degradation methods, we enhance plasticity by strategically reducing molecular weight. Our cutting-edge equipment, such as opening and compacting machines, are integral to this transformative process.
1. Mechanical Plastic Smelting: The process is meticulously maintained at an exact 60°C to effectively decrease viscosity below 60, ensuring seamless processing.
2. Thermoplastic Refining: This method, tailored for natural rubber pretreatment, introduces compressed air to deliver optimal refining results.
3. Mixed Refining Process
Attain unrivaled uniformity and quality by evenly dispersing the mixture in a high-performance rubber refining machine, fostering a mixed rubber of exceptional consistency.
Key control points: Precision is paramount. Maintain a temperature ≤120°C, with a refined time span of 5-15 minutes, and a roll distance accurately set at 1-3mm.
Customized adjustments:
1. For products necessitating outstanding wear resistance, increase the carbon black content to 40-50 parts by weight, significantly enhancing durability.
2. For products enduring high temperatures, incorporate 5-8 parts by weight of zinc oxide alongside a silane coupling agent, ensuring superior performance under heat.
3. For the moulding process:
| Placement forming | Suitable for rubber plates and sealing strips, it is necessary to control the adhesive thickness tolerance within ± 0.1mm. |
| Extrusion and shaping | For the hose and sealing ring, the design of the mouth die directly affects the accuracy of the section. |
| Modular pressure molding | Metal-rubber composite molds should be used for complex structures. |
| Injection molding | Complex structural parts are multi-material composite components |
Comparison of key performance parameters
| index | NR | NBR | FKM | SIR | EPDM |
| Temperature resistance range | -60~100ºC | -25~130ºC | -20~250ºC | -70~300ºC | -60~150ºC |
| oil resistivity | insufficient | excellent(NBR40) | extremely excellent | insufficient | insufficient |
| ozone resistance | insufficient | insufficient | excellent | excellent | excellent |
| abrasion performance | excellent | middle | middle | insufficient | excellent |
| Electric insulation | excellent | insufficient | insufficient | excellent | excellent |
Suggestions for type selection
| Oil resistance scene | Nitrile rubber (NBR) or fluorine rubber (FKM) is preferred |
| hot environment | Silicone rubber (VMQ) or fluorine rubber (FKM) |
| resistance to chemical attack | Chlorosulfated polyethylene (CSM) or fluorine rubber (FKM) |
| dynamic packing | Ethpropylene rubber (EPDM) or polyurethane rubber (PU) |
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