| Customization: | Available |
|---|---|
| Material: | Organic Silicone |
| Application: | Household, Medical, Industrial, Agricultural |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
1. Raw Material Preparation and Pretreatment
1. Main Material Selection
Select the perfect type of raw rubber that best suits your product's application. Whether you require the outstanding elasticity of natural rubber, the oil-resistant qualities of nitrile rubber, or the impressive high-temperature resilience of silicone rubber, we provide an unparalleled selection of top-tier options.
2. Compound Agent Dispensing
Elevate the rubber's capabilities by meticulously blending in vulcanizers such as sulfur or peroxide, alongside promoters, anti-aging agents, and fillers like carbon black or white carbon black. Attain extraordinary precision with an error margin that doesn't exceed a mere 0.1%.
3. Treatment of Reinforcement Materials
For optimal adhesion and strength, the skeletal material—be it steel wire or fiber—is artfully pretreated. This involves an immersion in rubber followed by drying at an exact 60-70°C, ensuring a robust integration with the rubber.
2. Plastic Refining Process
Boost plasticity by diminishing molecular weight through advanced mechanical extrusion or thermal oxidative degradation techniques. Cutting-edge equipment like opening and compacting machines enhance this process.
1. Mechanical Plastic Smelting: Maintain a precise temperature of 60°C to effectively lower viscosity below 60, ensuring seamless processing.
2. Thermoplastic Refining: Ideally suited for the pretreatment of natural rubber, this technique introduces compressed air to achieve optimal refinement.
3. Mixed Refining Process
Achieve perfectly uniform properties by evenly dispersing the mixture within a high-performance rubber refining machine, producing a mixed rubber of exceptional quality.
Key control points: Ensure a precise temperature maintenance of ≤120°C, within a 5-15 minute time frame, and a roll distance accurately set between 1-3mm.
Customized adjustments:
1. For products demanding extraordinary wear resistance, elevate carbon black content to 40-50 parts by weight to significantly enhance durability.
2. For items that need to endure high temperatures, add zinc oxide (5-8 parts by weight) and 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) |
){kind=link}