| 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 raw rubber type suited for your application's demands. From the outstanding elasticity of natural rubber to nitrile rubber's resistance to oils and the impressive heat endurance of silicone rubber, we offer the best options to meet your requirements.
2. Compound Agent Dispensing
Elevate the rubber's capabilities through precise integration of vulcanizers such as sulfur or peroxide, along with additives like promoters, anti-aging agents, and fillers like carbon or white carbon black. Precision is key, with an error margin as low as 0.1% ensuring superior performance.
3. Treatment of Reinforcement Materials
Achieve exceptional binding strength by meticulously pretreating skeletal materials, be it steel wire or fiber, through rubber soaking and drying at a closely controlled 60-70°C, ensuring seamless fusion with the rubber matrix.
2. Plastic Refining Process
Augment plasticity by lowering molecular weight through advanced mechanical extrusion or thermal oxidative degradation. Utilizing cutting-edge machinery, including opening and compacting machines, guarantees refined processing excellence.
1. Mechanical Plastic Smelting: Carefully maintain a 60°C temperature to significantly reduce viscosity below 60, facilitating smooth and efficient processing.
2. Thermoplastic Refining: Ideal for natural rubber pretreatment, this technique uses compressed air for achieving the best outcomes.
3. Mixed Refining Process
Ensure exceptional uniformity and quality by seamlessly blending the mixture in a state-of-the-art rubber refining machine, producing a mixed rubber of unparalleled standards.
Key control points: Precisely manage a temperature not exceeding 120°C, within a 5-15 minute window, and maintain a roll distance finely set at 1-3mm for optimal results.
Customized adjustments:
1. To achieve superior wear resistance, enhance durability by increasing the carbon black content to 40-50 parts by weight.
2. For products designed to endure high temperatures, incorporate 5-8 parts by weight of zinc oxide coupled with a silane coupling agent for enhanced 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}