What is the relationship and differences between silicone rubber and silicone resins -Iota

Products

News

Office Address:	Sunmoon Science Park, 985 Xingzhong Road, High-Tech Zone, Bengbu, China
Factory Address:	Mohekou Industrial Park, Huaishang District, Bengbu, Anhui, China
Contact:	Ariel Young
Phone:	0086-552-3827158
FAX:	0086-552-3822922
Mobile:	0086-15255290433
WebSite:	www.siliconeoil.cn www.siliconeoil.net
Email:	sales@siliconeoil.net
QQ:

Service > What is the relationship and differences between silicone rubber and silicone resins

What is the relationship and differences between silicone rubber and silicone resins

1, the final properties of the silicone resin processed article depends on the amount (i.e., the ratio of R and Si) contained in the organic group. Usually practical value silicone resin composition of the molecule, R is the ratio of Si is between 1.2 ~ 1.6.
As a general rule, R: the smaller the value of Si, the more the obtained silicone resin can be cured at lower temperatures; R: The larger the value of Si, the resulting silicone resin cured on the need to make it 250 200 Material baked at a high temperature ℃ for a long time, and the resulting film hardness is poor, but much better than the former thermoelasticity.
Silicone resin is a thermosetting plastic, which is one of the most outstanding properties of excellent thermal oxidation stability.
250 ℃ was heated for 24 hours, the silicone resin, the weight loss is only 2-8%. Another outstanding properties of the silicone resin is excellent in electrical insulation properties, it can maintain its good insulation properties over a wide temperature and frequency range.
General Electric Silicone breakdown strength of 50 kV / mm, volume resistivity of 1013 - 1015 ohm-cm, a dielectric constant of 3, the dielectric loss tangent value of about 10-30.
In addition, the silicone resin also has excellent resistance to moisture, water, rust, cold, ozone and weather resistance, the vast majority of chemical reagents such as dilute aqueous mineral acid corrosion resistance is good, but the performance is poor solvent.
2, the polymer molecule is a silicone rubber has the SI-O (Si - O) is bonded to a linear structure.
SI-O bond is 443.5KJ / MOL, than the CC bond energy (355KJ / MOL) is much higher, and because of its unique molecular structure, so that the ordinary rubber other than the silicone rubber having a better heat resistance, electrical insulation, chemical stability.
A typical silicone rubber that is polydimethyl siloxane Quan, has a helical molecular structure, a smaller force between the molecules, which have good elasticity while pointing spiral outside a Tsuen can rotate freely, thus making the silicon rubber has a unique surface properties, such as anti-blocking properties and surface hydrophobicity.
Silicone rubber formed from silicon, oxygen atom of the main chain, side chain carbon-containing group, the side chain is the maximum amount of ethylene in the silicone rubber. Both heat, and cold, the use of temperature between 100--300 ℃, it has excellent weather resistance and ozone resistance to using good insulation.
The disadvantage is that low intensity, poor tear resistance, abrasion resistance is also poor.

Feedback to "Iota Silicone Oil (Anhui) Co., Ltd."