| 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 perfect type of raw rubber that aligns flawlessly with your product's intended application. Whether you require the outstanding elasticity of natural rubber, the oil resistance of nitrile rubber, or the extraordinary high-temperature endurance of silicone rubber, our curated selection guarantees the ideal match.
2. Compound Agent Dispensing
Elevate the rubber's capabilities by meticulously incorporating vulcanizers such as sulfur or peroxide, along with promoters, anti-aging agents, and fillers like carbon black or white carbon black. Experience unparalleled precision with an impressive error margin of merely 0.1%.
3. Treatment of Reinforcement Materials
Ensure optimal binding strength through the careful pretreatment of skeletal materials, whether it be steel wire or fiber. This process involves a strategic soaking in rubber followed by drying at an exact temperature range of 60-70°C, guaranteeing superior integration with the rubber.
2. Plastic Refining Process
Refine plasticity by strategically reducing molecular weight using innovative mechanical extrusion or thermal oxidative degradation methods. Employ cutting-edge machinery, such as opening and compacting machines, to enhance this process.
1. Mechanical Plastic Smelting: Sustain a precise temperature of 60°C to effectively decrease viscosity to below 60, ensuring smooth and seamless processing.
2. Thermoplastic Refining: Ideally suited for natural rubber pretreatment, this technique utilizes compressed air to achieve superb results.
3. Mixed Refining Process
Attain unparalleled consistency in properties by evenly dispersing the mixture using a high-efficiency rubber refining machine, thereby producing mixed rubber of superior quality.
Key control points: Carefully maintain a temperature of ≤120°C, with a processing duration of 5-15 minutes, and a meticulously adjusted roll distance of 1-3mm.
Customized adjustments:
1. For products demanding extraordinary wear resistance, boost carbon black content to 40-50 parts by weight to significantly enhance durability.
2. For products necessitating high-temperature resilience, integrate zinc oxide (5-8 parts by weight) and a silane coupling agent for exceptional performance.
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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