Place of Origin:
China
Brand Name:
CHENGUANG FSP
Certification:
ISO
Model Number:
7220
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Common Silicone Rubber for Molding&Extrusion
DESCRIPTION
This product can undergo basic processing after adding the vulcanizing agent "Double 2, 4." When subjected to appropriate technical conditions, it doesn't require a second vulcanization step. The final product boasts exceptional characteristics like arc and corona resistance, high and low-temperature resistance, and electrical insulation. This makes it a perfect material for various applications, including heat-resistant seals, electrical wire and cable, electrical insulator parts, foam strips, and irregularly shaped rubber tubes.
PARAMETERS
| Model |
DH-7220
|
|
| Appearance | Milky-white, slightly transparent, no obvious extraneous matter | |
| Density (g/cm3) | 1.03±0.05 | |
| Hardness (Shore A Points) |
20±2
|
|
| Tensile Strength (MPa≥) |
4.0
|
|
| Elongation at Breakage (%≥) |
750
|
|
| Tension Set (% ≤) | 6 | |
| Tear Strength (kN/m ≥) |
10
|
|
| Volume Resistivity (Ω·cm, ≥) |
1.0×1014
|
|
| Dielectric Strength (kV/mm ≥) | 18 | |
Physical and Mechanical Properties are based on first vulcanization data, Electrical Properties are drawn from
second vulcanization data.
First vulcanization Condition for test piece: 175℃×5min, Second vulcanization condition for test piece: 200℃×2h.
Vulcanizator: 80% DMDBH,quantity added 0.65%.
PROPERTIES
Construction: Silicone's resilience against wind, rain, UV, and ozone, coupled with its exceptional durability, make it a formidable material for construction applications, including coatings, adhesives, and sealants.
Medical: Silicone recipes that are FDA-approved make it a safe material for a wide range of medical equipment, such as feeding tubes, respiratory masks, pacemakers, and stents.
Food packaging and processing: Silicone is a safe and durable material for food packaging and processing, much like its use in the medical industry. It is commonly found in kitchen utensils, appliances, and storage containers.
Electronics: Silicone is used in many electronic devices as sealants, coatings, and adhesives for various circuits, connectors, and tubes due to its exceptional properties.
APPLICATION
Aerospace: The toughness and heat resistance of silicone make it an ideal material for various aerospace applications, such as engine components, protective coatings, electrical equipment, and sealants.
Automotive: Silicone's exceptional properties make it an excellent material for use in the automotive industry. Its use includes gaskets, sealants, hoses, and tubing.
Construction: The robustness of silicone and its ability to withstand wind, UV rays, rain, and ozone make it an excellent choice for construction purposes. It is widely used in adhesives, coatings, and sealants.
Medical: Several silicone formulations are FDA-approved, making it a safe material for various medical equipment, including feeding tubes, pacemakers, respiratory masks, and stents.
PROCESSING FORM
The CHENGUANG FSP solid silicone rubber grades can be processed through conventional methods like injection, compression molding, transfer, and extrusion, in addition to calendering.
FAQ
1. Q: What is the difference between high-consistency and liquid silicone rubber for molding and extrusion?
A: High-consistency silicone rubber requires heat and pressure to cure and is typically used in compression molding, while liquid silicone rubber is cured by an addition reaction and is commonly used in injection molding.
2. Q: What are the typical applications of silicone rubber in molding and extrusion?
A: Silicone rubber is commonly used for gaskets, seals, O-rings, and other molded or extruded products that require excellent heat resistance, chemical resistance, and flexibility.
3. Q: What is the recommended curing temperature for silicone rubber in molding and extrusion?
A: The recommended curing temperature for silicone rubber depends on the specific grade and application, but it is typically between 150°C and 200°C for high-consistency silicone rubber and between 120°C and 180°C for liquid silicone rubber.
4. Q: Are there any special considerations for designing molds and dies for silicone rubber molding and extrusion?
A: Yes, silicone rubber has unique flow and cure characteristics that require careful consideration when designing molds and dies. For example, silicone rubber may require venting or special gating to ensure proper flow and minimize air entrapment. The material's low viscosity and high elasticity also require close attention to mold and die design to ensure consistent part quality.
OUR FACTORY
Proper packing and warehouse FIFO management.
Stable supplying of all fluoropolymer products.
Technicians in laboratory make sure the products quality is in control.
Professional logistics make sure the products are in perfect packing during transportation.
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