| 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 ideal raw rubber type that aligns perfectly with your product's purpose. Whether it's the outstanding elasticity of natural rubber, the oil resistance found in nitrile rubber, or the incredible high-temperature endurance of silicone rubber, we provide the finest selection to meet your needs.
2. Compound Agent Dispensing
Enhance your rubber's performance with precision by adding vulcanizers like sulfur or peroxide, promoters, anti-aging agents, and fillers such as carbon black or white carbon black. Achieve precise accuracy with an error margin as low as 0.1%.
3. Treatment of Reinforcement Materials
To achieve optimal binding strength, the skeletal material, whether steel wire or fiber, is carefully pretreated. This involves soaking in rubber and drying at a precise 60-70°C, ensuring superior integration with the rubber.
2. Plastic Refining Process
Enhance plasticity by methodically reducing molecular weight through advanced mechanical extrusion or thermal oxidative degradation techniques. Our state-of-the-art equipment, including opening and compacting machines, is utilized for this sophisticated process.
1. Mechanical Plastic Smelting: Maintain a precise 60°C temperature to efficiently lower viscosity to under 60, ensuring seamless processing.
2. Thermoplastic Refining: This method is ideal for natural rubber pretreatment, using compressed air to achieve optimal results flawlessly.
3. Mixed Refining Process
Achieve remarkable consistency by uniformly dispersing the mixture in a high-performance rubber refining machine, crafting mixed rubber of unparalleled quality.
Key control points: Maintain a precise temperature of ≤120°C, with a time frame of 5-15 minutes, and a roll distance meticulously calibrated at 1-3mm.
Customized adjustments:
1. For products demanding exceptional wear resistance, increase the carbon black content to 40-50 parts by weight to significantly enhance durability.
2. For products needing 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) |
){kind=link}