Epoxy silane

Waterborne epoxy silane is A kind of nanometer zinc rich epoxy silane coating, with two components, its formula is characterized by: with all components is 100%, the weight of the following for each component weight ratio: A component: 800 ~ 1000 mesh nanometer zinc powder 65% ~ 80%, the emulsion type epoxy resin 8% ~ 25%, 0.1% ~ 5% ethanol, deionization water 0.5% ~ 5%, thickener 0.1% ~ 1%, the heavy dose of 0.1% ~ 3%;B component: silane portfolio: [double a silicon alkyl amino silane, vinyl silane] 1.5% ~ 5%, and the combination of these two kinds of silane distribution ratio between 0.15 ~ 0.30, and 3% ~ 8% curing agent.
Study found that the epoxy silane after pre emulsion can be compatible with aqueous polyurethane, after modification of aqueous system can be stable for a long time and not gel, effective storage period more than 3 months.With the increase of dosage of epoxy silane, gradually increased the tensile strength of the coating and extension first to continue to fall, after a slight increase, bibulous rate dropped significantly, to improve the bonding strength obviously.

(source:http://www.ac-chem.net/news/epoxy-silane-b944.html)

Silane crosslinking

Silane crosslinking is introduced through silane coupling agent in the polyethylene, increase the intensity of the polyethylene, aging resistance and other characteristics.
Method of silane crosslinked polyethylene technology since the 60 s was got rapid progress, won a wide application.Silane crosslinked polyethylene in the industry now there are three main kinds of technological methods: two steps process (also called SioplasE), one-step production process (also called MonosilR) and vinyl silane copolymers process, including vinyl silane copolymers technology combines two steps, and many advantages of the one-step method, has more advantages, but, in the process of three kinds of crosslinking reaction is through the blend with silane alcohol condensation catalyst of silane modified polyethylene soak in warm water or water vapor, crosslinking needed moisture diffusion came in from the outside world.Due to the hydrophilic polyethylene, water in polyethylene, diffusion is slow, the crosslinking is very slow, and the products of the wall is thicker, the longer the crosslinking time.For example, in 80 ℃ warm water crosslinking, to achieve the same degree of crosslinking, 8 mm thick sheet should be 120 h, 15 mm thick sheet will be expected to 260 h, 22 mm thick sheet should be 1000 h.The above data is crosslinking of silane grafted PE speed data, vinyl silane crosslinking of copolymer faster than crosslinking of silane grafted PE speed lower than 3 ~ 4 times.This to the industrialized production of the silane crosslinked polyethylene caused great inconvenience, so how to solve the problem of slow crosslinking became a big problem in the silane crosslinking technology.

(source:http://www.ac-chem.net/news/crosslinking-9078.html)

Definition of silane

Silane is compound with silicon and hydrogen, is the floorboard of a series of compounds, including silane silane (SiH4) and b (Si2H6) and some more advanced silicon hydrogen compounds.The most used is silicane.Generally the silican do silane for short.
Silane as a source of silicon components of gas, can be used in the manufacture of high purity polycrystalline silicon, monocrystalline silicon, microcrystalline  silicon and amorphous silicon, silicon nitride, silicon oxide, heterogeneous silicon, all kinds of metal silicides.Because of its high purity and can achieve fine control, has become many other important special gas silicon source cannot be replaced.Silane is widely used in microelectronics, optoelectronics industry, used in the manufacture of solar cells and flat panel display, glass and steel plating, and is by far the world's only large-scale production of granular high purity silicon intermediate.Silane high-tech applications continues to appear, including used in the manufacture of advanced ceramics, composite materials, functional materials, biological materials, high energy material and so on, as many new technologies, new materials, the basis of the new device.The silane and is famous for its characteristic of spontaneous combustion and explosive.Spontaneous ignition of the silane has a very wide scope and strong burning energy, determines its gas is a kind of high risk.

(source:http://www.ac-chem.net/news/definition-of-silane-ac05.html)

The rubber crosslink structure

Through the branched chain link between rubber macromolecule chain into a three-dimensional space net type macromolecule, forming crosslink structure. Crosslinking key type and crosslink density is the most important parameters in the crosslinking structure, respectively has the structure of crosslinked key and junction in what density distribution between the molecular chain of rubber.Crosslinked rubber after various physical properties have larger change, which is the most significant performance affected by crosslinking density modulus and the hardness, because of the crosslinking of chain and chain sliding between the junction between the inhibition of polymer chain, modulus and hardness increased with the increase of crosslinking density increased;Crosslinking density and tensile strength and tear strength relationship is relatively complex, the scope of a certain degree of crosslinking, with a peak performance.Greatly influenced by crosslinking key type of fatigue resistance and heat oxygen aging performance.Due to the effect of fracture rearrangement of the sulfur exist many keys, contains a lot of sulfur vulcanized rubber network key fatigue resistance performance is good, and the key to higher carbon carbon to improve heat vulcanized rubber crosslinking key oxygen aging performance.

(source:http://www.ac-chem.net/news/the-rubber-crosslink-structure-8ab5.html)