Siltherm is the leading producer of microporous thermal insulation in China

Privately owned, dynamic and high tech.

High Temperature, Microporous Thermal insulation, Product Range

Siltherm have a major shareholding in the production of pyrogenic silica, commonly the main constituent ingredient in all nanoporous structures, this means that they have unrivalled control of their supply chain for microporous insulation products.

They are the leading vertically integrated producer of microporous thermal insulation worldwide, products which are proven to be the most cost effective alternatives to products such as calcium silicates and fibrous insulation blankets and boards.

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Siltherm Europe

Siltherm are a market driven provider of thermal management solutions to industry and have opened the Europe Office, located in Ireland, to promote and supply products to the European market.

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Siltherm Quality Management System

Siltherm Int’l Group Ltd maintains a Quality Management System to: ISO9001:2015, Certificate Registration Number CN-00219Q20582R1S. IQNet Certificate Issued by CQM for scope ‘Research and development, production and after-sales service of nano thermal insulation materials’

Our Products.

High Performance Microporous Insulation

Siltherm products offer a realistic alternative compared to other lightweight insulation solutions, such as low density calcium silicate, vermiculite, fibre or wool based blankets and boards.

The thermal resistance provided by Siltherm products is a cost competitive alternative to the other lightweight insulation solutions on the market, whilst also delivering benefits in terms of space optimisation and reduced weight.

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Technical Data Sheets (TDS)

For more information on Siltherm Products, read the Technical Data Sheets. These include details on: Features and Benefits, Typical Applications, Technical Specification, Standard Dimension and Format Availability.

Safety Data Sheet (SDS)

The Safety Data Sheet includes information on safe working procedures when handling Siltherm products.


Siltherm use high tech processing technology to combine the silica with opacifiers and reinforcement to deliver world class insulation performance.

Pyrogenic silica is the principle ingredient used to create the microporous structure in super insulating products

Pyrogenic or fumed silica, industrial synthesis diagram, used in the manufacture of microporous insulation

The industrial synthesis of fumed silica can be described as continuous flame hydrolysis of silicon tetrachloride (SiCl4) at a temperature of approximately 1200°C.

Pyrogenic silica or fumed silica (CAS number 112945-52-5), is produced in a flame and consists of microscopic droplets of amorphous silica fused into branched, chainlike, three-dimensional secondary particles which agglomerate into tertiary particles.

Hydrophobic silica is a form of silicon dioxide (silica) which has hydrophobic groups chemically bonded to the surface. This form of silica is hydrophobic (water repellent) and when used in thermal insulation the result in a finished product that cannot be wetted.

High Temperature


Thermal insulation for high temperature applications needs to be durable and long lasting. Siltherm products are designed to be environmentally friendly, providing highly efficient thermal insulation that performs reliably in a wide range of high temperature applications, alone or as part of a system.

Cryogenic and
Cold Applications


Thermal insulation for low temperature applications (eg refrigeration, building construction, and temperature controlled packaging for drugs and medicines) has low thermal conductivity for temperature resistance. Siltherm products have optimised densities, formulations and barrier films, providing durability and long lasting performance.

Contact Siltherm Europe

Siltherm Int’l Group Ltd is committed to delivering cutting edge thermal insulation solutions to suit the needs of our European customers. Get in touch with us at the Siltherm Europe office to find out more about our products and the services we offer. You will find we are always happy to answer questions and discuss requirements.