| 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 raw rubber to suit your product's unique demands. Whether you require the superior elasticity of natural rubber, the oil-resistant properties of nitrile rubber, or the exceptional high-temperature resilience of silicone rubber, we provide an unparalleled selection of premium materials.
2. Compound Agent Dispensing
Elevate the performance of rubber by expertly adding vulcanizers like sulfur or peroxide, alongside promoters, anti-aging agents, and fillers such as carbon black or white carbon black. Ensure precision with an exceptional error margin of a mere 0.1%, achieving unmatched quality.
3. Treatment of Reinforcement Materials
To secure optimal binding strength, the skeletal materials, be it steel wire or fiber, undergo meticulous pretreatment. This includes soaking in rubber followed by precise drying at temperatures between 60-70°C to ensure superior integration with the rubber.
2. Plastic Refining Process
Enhance plasticity by skillfully reducing molecular weight using state-of-the-art mechanical extrusion or thermal oxidative degradation techniques. Our advanced equipment, including opening and compacting machines, is at the forefront of this refinement process.
1. Mechanical Plastic Smelting: Meticulously maintain a temperature of 60°C to effectively lower viscosity to below 60, ensuring seamless processing and optimal results.
2. Thermoplastic Refining: Ideal for natural rubber pretreatment, this innovative method uses compressed air to perfect the results, ensuring enhanced efficiency.
3. Mixed Refining Process
Achieve extraordinary consistency in properties by expertly dispersing the mixture using a high-performance rubber refining machine, crafting mixed rubber of outstanding quality.
Key control points: Maintain a precise temperature not exceeding 120°C, with a time frame of 5-15 minutes, and a roll distance meticulously adjusted to 1-3mm.
Customized adjustments:
1. For products demanding exceptional wear resistance, elevate carbon black content to 40-50 parts by weight, significantly enhancing durability and longevity.
2. For products designed to withstand high temperatures, integrate zinc oxide (5-8 parts by weight) along with a silane coupling agent, ensuring superior performance under thermal stress.
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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