Fiberglass Product Testing

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Testing of Various Inorganic/ Organic Insulation Materials

Inorganic thermal insulation materials are porous, fibrous, or granular materials made from natural or synthetic inorganic minerals. They are characterized by non-combustibility, high temperature resistance, corrosion resistance, and strong chemical stability. Their insulation principle relies on the internal pore structure (closed or open) to block air convection and conduction, thereby achieving thermal insulation. Organic thermal insulation materials are lightweight, porous materials made from organic raw materials such as resins, cork, and plant fibers. They feature low bulk density, low thermal conductivity, and good processability, but they have poor high-temperature resistance (generally ≤ 120°C) and are prone to moisture absorption and decay, making them primarily suitable for low-temperature insulation applications. China‘s production of inorganic thermal insulation materials increased from 3 million tons in 2016 to 4.5 million tons in 2022, with a compound annual growth rate of 5.8%, among which rock wool accounts for over 60%. Impacted by inorganic thermal insulation materials and vacuum insulation panels (VIPs), the market share of organic materials in high-end construction has dropped from 45% in 2015 to 30% in 2022, although they still dominate in low-temperature applications.

Testing Products

Glass Wool

Mineral Wool (Slag Wool, Rock Wool)

Ceramic Fibers / Refractory Ceramic Fiber (RCF)

Expanded Perlite

Cellular Glass (Foam Glass)

Microporous Calcium Silicate

EPS (Moulded Expanded Polystyrene)

XPS (Extruded Polystyrene Foam)

Polyurethane Foam (PU)

Testing Items

Moisture Content

Thickness

Bulk Density / Volume Density

Mass per Unit Area

Permanent Linear Change on Heating (Reheat shrinkage)

Tensile Strength

Resilience / Spring-back (Compression recovery)

Shot Content (Non-fibrous particles)

Density and Moisture Content (Quality moisture content)

Dimensional Tolerances (Allowable deviations)

Uniform Heating / Soaking Performance (Fired stability)

Thermal Conductivity

Reaction to Fire / Fire Performance

Compressive Strength

Flexural Strength (Modulus of Rupture)

Water Repellency (Hydrophobicity)

Testing Standards

Calcium Silicate Thermal Insulation Products:

GB/T 10699-2015, ISO 8143-2010, ASTM C533-17(2023)

Expanded Perlite Thermal Insulation Products:

GB/T 10303-2015, ASTM C610-17(2023)

Expanded Perlite (Loose fill):

JC/T 209-2012

Polystyrene Foam (EPS, XPS, Rigid cellular polystyrene thermal insulation):

GB/T 10801.1-2021, GB/T 10801.2-2018, BS EN 13164:2012+A1:2015, ASTM C578-23

Polyurethane (Rigid polyurethane foam for building insulation, spray-applied rigid polyurethane foam for thermal insulation):

GB/T 21558-2008, GB/T 20219-2015

Service Advantages

The company hosts the National Center for Quality Inspection and Testing of Glass Fiber Products, holding national-level CMA qualification and CNAS laboratory accreditation.

As the lead drafter, the company has formulated or revised over 30 national and industry standards in the field of thermal insulation materials.

Specializing in testing in the thermal insulation and fiber fields for over 60 years.