| 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 with your product's purpose. Whether it's the extraordinary elasticity of natural rubber, the impressive oil resistance of nitrile rubber, or the remarkable high-temperature resilience of silicone rubber, we offer an unmatched selection to meet every need.
2. Compound Agent Dispensing
By precisely incorporating vulcanizers like sulfur or peroxide, along with promoters, anti-aging agents, and fillers such as carbon black or white carbon black, the rubber's performance is significantly enhanced. Experience unparalleled accuracy with an exceptionally low error margin of just 0.1%.
3. Treatment of Reinforcement Materials
To achieve optimal binding strength, the skeletal material, be it steel wire or fiber, undergoes meticulous pretreatment. This includes a soaking in rubber followed by drying at an exact 60-70°C to ensure seamless integration with the rubber.
2. Plastic Refining Process
Enhance plasticity by effectively reducing molecular weight through advanced mechanical extrusion or thermal oxidative degradation techniques. Cutting-edge equipment, such as opening and compacting machines, is employed for this transformative process.
1. Mechanical Plastic Smelting: Maintain a precise temperature of 60°C to effectively reduce viscosity to below 60, ensuring flawless processing.
2. Thermoplastic Refining: Ideally suited for natural rubber pretreatment, this method introduces compressed air to deliver optimal results.
3. Mixed Refining Process
Achieve impeccably consistent properties by uniformly dispersing the mixture in a high-performance rubber refining machine, resulting in a mixed rubber of remarkable quality.
Key control points: Ensure a precise temperature of ≤120°C, with a processing time of 5-15 minutes, and roll distance meticulously calibrated at 1-3mm.
Customized adjustments:
1. For products demanding exceptional wear resistance, increase carbon black content to 40-50 parts by weight to significantly enhance durability.
2. For products required to withstand high temperatures, integrate zinc oxide (5-8 parts by weight) along with a silane coupling agent for superior thermal 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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