Used in Zinc Rich Primer, Ethyl Silicate 40, Teos-40, Dynasil40, Tes 40, Silane Coupling Agent, Silane, CAS: 11099-06-2,

Min.Order: 200
Product origin: Qingdao, Shandong, China
Infringement complaint: complaintComplaint
US$ 1 ~ 50

Description

Product Description

1. HENGDA-Si40 is a ethyl silicate with a silicon dioxide content of approximately 38- 42 % upon complete hydrolysis (the Si content of HENGDA-Si40 is calculated as SiO2).
2. HENGDA-Si40 is formed in the presence of water from tetraethyl silicate (Si[OEt]4) by partial hydrolysis of the ethoxy groups to hydroxyl groups and subsequent condensation with formation of siloxane bonds (-Si-O-Si-).
3. HENGDA-Si40 is a colorless, low-viscosity liquid with an SiO2 content of 40% (the Si content of HENGDA-Si40 is calculated as SiO2). The polysilicic acids still have a sufficient content of ethoxy groups which can be activated by acid- or base-catalyzed hydrolysis. Condensation starts even during hydrolysis, with the formation of relatively large polymeric molecules. During storage of these hydrolysates, condensation continues until a gel is formed, where the rate depends on the degree of hydrolysis.
4. The action of the hydrolysates as binders is based on the continuation of the hydrolysis with subsequent gelation and dehydration to give polymeric SiO2 structures.
5. Similarly to HENGDA-Si28, HENGDA-Si40 is used to deposit silicic acid formed as a result of complete hydrolysis. The resulting silicic acid bonds well to many inorganic substrates, such as glass, ceramic, metal, fillers, pigments and synthetic fibers. The deposition of a thin SiO2 layer improves the chemical and thermal stability and mechanical properties.

Property:

 
AppearanceColorless transparent liquid
CAS 11099-06-2
SiO2 content (wt%)38.0~42.0
Density(ρ20),g/cm31.040~1.070
Water solubilityReactivity

Equivalent Name:

TEOS-40,
DYNASIL40
TES 40

Applications:

1. Adhesion promoter for paint coatings, investment casting materials, and ceramic materials; crosslinking agent for silicone rubber.
2. Ethyl silicate can be used as insulating materials, coatings for the electronics industry, zinc powder coating binders, optical glass treatment agents, and coagulants. Organic silicon solvents and precision casting binders for the electronics industry, and to manufacture models for metal investment casting methods box.
3. After the ethyl silicate is completely hydrolyzed, extremely fine silicon oxide powder is produced, which is used to make phosphors.
4. It is used for organic synthesis, preparation of soluble silicon, catalyst, etc.
5. It is also used as a crosslinking agent and intermediate in the production of polysilicon.

Reactivity:

HENGDA-Si40 can react with water.

Storage and shelf life:

1. HENGDA-Si40 is supplied in 25 kg,200 kg drums and 1000kg IBC containers.
2. HENGDA-Si40 must be stored with exclusion of moisture.
3. In the unopened container HENGDA-Si40 has a shelf life of min.12 months from delivery.

Our Advantages

1. The First Manufacturer of silane coupling agents in China since 1965. We have the most production experience in silane coupling agents.
2. Professional in Producing  High-Quality Silane Coupling Agents.
3. Safety facilities such as DCS automatic remote control operating system, SIS safety instrumentation system; environmental treatment facilities such as waste gas collection and treatment system, sewage treatment system.
4. Well-trusted by world customers covering over 57 countries and regions.

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