1. What is silicone rubber?
Silicone rubber is also known as Polydimethylsiloxane. It is a durable material with high heat resistance.
It consists of a backbone of alternating Silicon and Oxygen atoms (silicone-based polymer), and is bonded to other molecules including carbon and hydrogen.
Its structure always includes:
Structural formula of silicone rubber
Silicone rubber
2. Properties of silicone rubber
Silicone rubber has no unsaturated double bonds making it inert, resistant to environmental factors such as oxygen, ozone, sunlight.
Silicone rubber can withstand extreme temperatures from −65 to 315 °C while still maintaining its useful properties. Because of these properties and the ease of manufacturing and forming, silicone rubber can be found in a wide range of products, including electrical cable sheathing, automotive applications, outdoor products that are exposed to rain, sunlight, ozone, alkaline solvents, dilute acids, products used in cooking and food storage, apparel such as underwear, sportswear and footwear, electronic components, medical devices and implants, etc.
Silicone’s low toxicity is one of the advantages of choosing it as a safe material for food and medical applications. Since its approval by the FDA in 1979, household products made from silicone rubber are commonly found in cookware, kitchenware, and food containers. In the medical field, silicone is used in pacemakers, stents, respiratory masks, and feeding tubes, among many other uses.
Table of physical properties of silicone rubber:
|
Properties |
Value |
|
Common hardness, Shore A |
60±5 |
|
Tensile strength |
> 7,5 |
|
Elongation at break |
≥ 300% |
|
Proportion |
1.3g/cm3 |
|
Ozone stability (100pphm concentration) |
No cracks |
Like any polymer, silicone is not perfect and has some disadvantages. Silicone rubber has poor abrasion resistance, fire resistance and poor gas permeability. Silicone rubber also has only average oil resistance, and can swell and lose shape when exposed to oil for a long time.
3. Silicone rubber applications
Silicone is one of the most commonly used rubbers. Its combination of durability, strength, and overall safety makes it extremely popular in the food and medical industries. Applications of silicone include:
Aviation equipment made from silicone rubber
Medical: Many silicone formulations have been approved by the FDA as safe materials for use in various types of medical devices, including pacemakers, stents, respiratory masks, and feeding tubes.
Anh Tri Tue company manufactures technical rubber products from silicone rubber
With many years of experience in the field of rubber production, Anh Tri Tue Company specializes in manufacturing Silicone Rubber products for the food industry of sugar cane, coffee, tea with products including vibrating screen rubber balls, vibrating screen rubber mesh, sealing gaskets for medical equipment and machinery to meet the quality and needs of customers.
Certificate of Merit for Research and Production of Improved HS-103 Catheter in Emergency Treatment of Severe Gastrointestinal Bleeding Due to Esophageal Varices in Cirrhosis Patients
