| 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 to align seamlessly with your product's intended purpose. Whether you require the outstanding elasticity of natural rubber, the robust oil resistance of nitrile rubber, or the extraordinary high-temperature resilience of silicone rubber, our unparalleled selection ensures the best fit for your needs.
2. Compound Agent Dispensing
Elevate the rubber's performance by expertly adding vulcanizers such as sulfur or peroxide, along with promoters, anti-aging agents, and fillers like carbon black or white carbon black. This is achieved with unmatched precision and an error margin of just 0.1%, ensuring exceptional accuracy.
3. Treatment of Reinforcement Materials
To attain optimal binding strength, the skeletal material, whether it be steel wire or fiber, undergoes meticulous pretreatment. This process includes soaking in rubber followed by precise drying at 60-70°C to ensure superior integration with the rubber.
2. Plastic Refining Process
Enhance plasticity and reduce molecular weight using cutting-edge mechanical extrusion or thermal oxidative degradation techniques. Employ state-of-the-art equipment, including opening and compacting machines, to achieve remarkable results in this process.
1. Mechanical Plastic Smelting: Maintain a meticulous temperature of 60°C, effectively lowering viscosity to under 60 for smooth and seamless processing.
2. Thermoplastic Refining: Ideally suited for natural rubber pretreatment, this method introduces compressed air to achieve optimal and efficient results.
3. Mixed Refining Process
Achieve consistency and uniformity by expertly dispersing the mixture in a high-performance rubber refining machine, resulting in a mixed rubber of unparalleled quality and properties.
Key control points: Maintain a precise process temperature of ≤120°C, with a carefully timed interval of 5-15 minutes, and a roll distance meticulously adjusted to 1-3mm.
Customized adjustments:
1. For products requiring exceptional wear resistance, adjust the carbon black content to 40-50 parts by weight, significantly enhancing durability and longevity.
2. For products that must withstand high temperatures, incorporate zinc oxide (5-8 parts by weight) along with a silane coupling agent to ensure superior and reliable high-temperature 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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