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SILESTER® XAR

SILESTER® XAR is a ready-to-use, prehydrolyzed ethyl silicate hybrid binder. The solvent in SILESTER® XAR is a mixture of ethanol and 2-propanol.



特性

The main difference between ethyl silicate hybrid binders and conventional acid-catalyzed ethyl silicate hydrolyzates is that the binder (SiO2) generated during setting is formed from ethyl silicate and another source of amorphous silica. Due to their special formulation and the technology used in their manufacture, hybrid binders have very good storage stability and processing properties.

SILESTER® XAR is ready for use and may be processed straight away to ceramic slips, ramming mixes and anticorrosion paints.

Its degree of hydrolysis and pH have been optimized so as to provide the necessary reactivity and adequate storage stability.
A change in pH, e. g. arising from addition of fillers, pigments, various additives or solvent evaporation, promotes condensation of the ethyl silicate and the system will cure more quickly.
It is also important that the added components do not introduce uncontrolled amounts of water into the system as this would adversely affect the processing time / shelf life of the formulation.


SILESTER® XAR is primarily used to make:


- Ceramic casting molds, e. g. by the lost wax method.

- refractory products

- 2-pack anticorrosion zinc-rich paints, especially shop primers.

储存

The 'Best use before end' date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

销售和支持

Wacker Chemicals (China) Co.,Ltd.
Caohejing Hi-Tech Park
200233 Shanghai
中国大陆
+86  21  6130-2000 (电话)
+86 21 6130-2500  (传真)
Contact Sales

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