| 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 with your product's specific purpose. Whether it’s the extraordinary elasticity of natural rubber, the impressive oil resistance of nitrile rubber, or the outstanding high-temperature resilience of silicone rubber, we offer an unparalleled selection to meet your needs.
2. Compound Agent Dispensing
Elevate the performance of the rubber by precisely incorporating vulcanizers such as sulfur or peroxide, alongside promoters, anti-aging agents, and fillers like carbon black or white carbon black. Achieve unparalleled precision with an error margin astonishingly low, at just 0.1%.
3. Treatment of Reinforcement Materials
To attain optimal binding strength, the skeletal material—be it steel wire or fiber—is meticulously treated. This involves soaking in rubber followed by drying at an exact 60-70°C, ensuring superior integration with the rubber.
2. Plastic Refining Process
Enhance plasticity through advanced techniques that reduce molecular weight via cutting-edge mechanical extrusion or thermal oxidative degradation. State-of-the-art machines, including opening and compacting devices, facilitate this sophisticated process.
1. Mechanical Plastic Smelting: Maintain a precise temperature of 60°C to effectively reduce viscosity to below 60, ensuring seamless processing.
2. Thermoplastic Refining: Ideal for natural rubber pretreatment, this method effectively introduces compressed air to achieve optimal results.
3. Mixed Refining Process
Achieve impeccably consistent properties by uniformly dispersing the mixture within a high-performance rubber refining machine, crafting mixed rubber of the highest quality.
Key control points: Maintain a precise temperature of ≤120°C, ensure a time frame of 5-15 minutes, and meticulously set roll distance at 1-3mm.
Customized adjustments:
1. For products necessitating exceptional wear resistance, increase carbon black content to 40-50 parts by weight to significantly enhance durability.
2. For products required to endure high temperatures, incorporate zinc oxide (5-8 parts by weight) alongside a silane coupling agent for superior 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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