Comparison of Condensation Type Silicone Rubber an...

We often say that the silicone rubber can be divided into condensation type and addition type according to the curing reaction. Today we are going to be a simple analysis of properties and differences of the condensation type silicone rubber and addition type silicone rubber taking two-component silicone rubber that vulcanizes at room temperature as an example.   Two-component condensation type RTV silicone rubber is the most common type of silicone rubber that vulcanizes at room temperature, the raw rubber is usually the hydroxyl-terminated poly dimethyl siloxane, hereinafter referred to as RTV-2. Various grades of rubber at room temperature in the raw rubber is obtained by adding different types and quantities of reinforcing fillers and other additives. It is usually divided into two components when filtering, one of the components is rubber, and the other group is the catalyst, the crosslinking agent, and other catalysts. When the colloid and curing agent react under the action of catalyst, this active group is condensed, prolepses small molecules, and perform cross-linked cured. While, the based glue of two-component addition cure RTV silicone rubber mainly contain two or more poly vinyl diorganosiloxane，and glue is one of the most important foundation. Addition type silicone rubber is crosslinked by the addition reaction of ethylene double bond of silicon, and no small molecules produced in the reaction process.     Comparison of condensation type silicone rubber and addition type silicone rubber-------- Note: High or low performance is both relatively In the following comparison   Condensation type silicone rubber Addition type silicone rubber Two-component condensation type silicone rubber that vulcanizes at room temperature Two-component addition type silicone rubber that vulcanizes at room temperature Some small molecules produced No small molecules Heating can’t improve the curing speed Heating can improve the curing speed Poor strength Good strength Humidity can increase the cure rate Humidity has no effect on the curing speed Poor performance early in the sulfide, resumed after Good performance Larger shrinkage Low shrinkage Catalyst is not toxic The catalyst contains toxic substances Bonding is better Bonding in general Relatively cheap cost and price Relatively high cost and price More difficult to achieve food grade Food grade   Shenzhen Hong Ye Jie Technology Co., Ltd. was established in1998, which is recognized as the global leading in the manufacturer of high quality silicone rubber products in an unsurpassed variety of RTV-2 silicone, HTV silicone rubber, LSR, etc. Currently 95% of our products has been widely exported to more than 90 countries and gets its great reputation from all over the world. Our company provides condensation type silicone rubber and addition type silicone rubber. At present, condensation type silicone has the following product categories which are molding Silicone Rubber, manual mold design silicone rubber, Pad Printing silicone rubber, encapsulants and potting compound, sealant silicone, shoe mold rubber and so on. While, the products of addition type silicone existing in our company mainly have E series, Q series, T series, 93 series, 90 series and 94 series addition electronic potting compound, as well as HY-933 pad printing silicone rubber.   What you need is what we pursue. We are committed to back you up in producing first class products, and we'll provide free technology service and free technical training. We are sure that you will enjoy our silicone products and service! You can visit our website:http://www.szrl.net, or send us email right now at info@szrl.net for more information about our company and product.