| 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 use. Be it the unparalleled elasticity of natural rubber, the superior oil resistance of nitrile rubber, or the extraordinary high-temperature resilience of silicone rubber, our selection ensures you have access to the best options available.
2. Compound Agent Dispensing
Elevate the performance of rubber by meticulously adding vulcanizers such as sulfur or peroxide, accelerators, anti-aging agents, and fillers like carbon black or white carbon black. Experience precision with an impressively minimal error margin of merely 0.1%.
3. Treatment of Reinforcement Materials
To achieve optimal bonding strength, the skeletal material, whether steel wire or fiber, is meticulously pretreated. This involves immersion in rubber, followed by drying at a carefully controlled temperature of 60-70°C, ensuring superior integration with the rubber.
2. Plastic Refining Process
Boost plasticity by minimizing molecular weight through advanced mechanical extrusion or thermal oxidative degradation techniques. Cutting-edge equipment, including opening and compacting machines, are utilized for this process.
1. Mechanical Plastic Smelting: Maintain an exact temperature of 60°C to effectively reduce viscosity to below 60, guaranteeing smooth processing.
2. Thermoplastic Refining: Ideal for the pretreatment of natural rubber, this method employs compressed air to achieve exceptional results.
3. Mixed Refining Process
Attain impeccably consistent properties by uniformly dispersing the mixture in a high-performance rubber refining machine, crafting a mixed rubber of unmatched quality.
Key control points: Maintain an exact temperature of ≤120°C, with a carefully controlled time frame of 5-15 minutes, and a roll distance precisely set at 1-3mm.
Customized adjustments:
1. For products demanding exceptional wear resistance, augment carbon black content to 40-50 parts by weight to significantly enhance durability.
2. For products that must endure high temperatures, incorporate zinc oxide (5-8 parts by weight) along with 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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