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High Silica Fiber Felt

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Product Introduction

High Silica Fiber is the fourth-generation heat-resistant fiber material following asbestos, ceramic fiber, and glass fiber. It is produced using ultra-fine High Silica Fibers, advanced international technology, and specialized equipment through multiple rigorous processes. With a high-bond-energy molecular structure, High Silica Fiber exhibits superior "thermal stability, chemical stability, and wave transparency" compared to other heat-resistant fibers, along with excellent environmental benefits (asbestos-free, dust-free, non-irritating to skin). It serves as the optimal substitute for traditional fireproof and heat-resistant materials and is an ideal wave-transparent material. Applications span high-tech fields such as aerospace, military, nuclear energy; 5G communication equipment (radomes, antenna covers, wave-transparent devices); transportation (automotive parts, rail transit, marine engineering, aircraft); new energy (battery safety protection, solar energy, air energy); and other specialized industries (metallurgy, petrochemicals, construction, environmental protection, power, fire protection).

High Silica Fiber plays a critical role in aerospace and defense industries as a key material for advanced applications.

High Silica Fiber felt is the High Silica Fiber filament cut into a certain length, through the silk, carding, velvet, needling process, made into felt-like advanced air purification, heat insulation, sound insulation, fire resistance, heat preservation material. It is a non-toxic and harmless inorganic insulation material, and does not contain any binder compared with traditional glass wool and asbestos products. Unique flexibility, very easy to use, can be cut, cutting, bonding, filling, wrapping, riveting and other methods to meet the requirements of different occasions. It is not easy to produce poisoning and allergy to the operator, and it is a new environmentally friendly insulation product with more characteristics in various existing thermal insulation and sound absorption materials.

Performance Characteristics

High-Temperature Resistance: Maximum series softening point approaches 1,700°C. Maintains fibrous state and flexibility after 1 hour at 1,000°C under static conditions. Instantaneous heat resistance up to 1,450°C (varies by series).
Fireproof & Flame-Retardant: Achieves Class A1 non-combustibility (GB8624-2012 standard).
Low Thermal Conductivity: Three-dimensional microporous structure with high porosity ensures excellent insulation (including cryogenic applications).
Ablation Resistance: Stable under thermal shock and radiation; withstands 90 minutes of 1000°C butane flame (performance varies by series).

High-Temperature Insulation: Superior electrical insulation under extreme heat and high voltage.
Chemical Resistance: Resistant to weak acids and alkalis (excludes HF, H3PO4, HCl).
Aging Resistance: Durable against humidity, UV exposure, and weathering.
High-Efficiency Filtration: Low gas flow resistance due to porous structure; ideal for high-temperature filtration.
Eco-Friendly: Asbestos-free, dust-free, and non-irritating; replaces hazardous materials like asbestos and ceramic fiber.

Certifications and Tests

Class A1 non-combustible (GB8624-2012 standard), European Standard M0 non-combustible, ASTM E84 Class A non-combustible.

High Silica Fiber Felt Product Specifications (Common Models)

Series	Product model	Thickness (mm)	Conventional bulk weight (Kg/m³)	Optional volume weight range (Kg/m³)	Width range (cm)	Conventional roll length (m/roll)	SiO₂ content (%)	Recommended operating Temperature	Product Characteristics
RF Series	FSD-KPN-RF-6	6±1	130±13	110-170	100-250	30	92±2	Below 800℃	High temperature resistance, uniform thickness and density, stable gram weight, low thermal conductivity, good heat insulation and insulation effect, fire protection class A non-combustible, good penetration, uniform soaking, high composite fastness.
	FSD-KPN-RF-10	10±1.5	150±15	110-200	100-250	20
	FSD-KPN-RF-20	20±2	170±17	140-200	100-250	10
	FSD-KPN-RF-25	25±3	180±20	140-200	100-250	10
RF Series	FSD-KPN-RS-6	6±1	130±10	110-170	100-250	30	96±2	Below 1000℃
	FSD-KPN-RS-10	10±1.5	150±15	110-200	100-250	20
	FSD-KPN-RS-20	20±2	170±15	140-200	100-250	10
	FSD-KPN-RS-25	25±3	180±20	140-200	100-250	10

Note: The above are only some models and parameters of our common specifications. For inquiries about other silica fiber needle mat models or custom specifications, please contact our business team.

Disclaimer: The above technical parameters and pictures are for reference only and are not used as the technical basis for each batch of actual products.

Main Uses

Fireproof, Thermal Insulation, Sound Absorption, and High-Temperature Sealing

1. Used as fireproof, high temperature resistance, heat insulation, sound absorption, high temperature sealing materials

High Silica Fiberglass Needle Mats are used in military, aerospace, nuclear power thermal insulation materials, brake friction liner, etc.;
Metallurgical, mechanical and electrical, petroleum, chemical, power plant, transportation, mechanical equipment and other general industrial fields: hot and cold pipes, containers, boilers, valves, flanges, pumps, and some power supply or process temperature related proprietary equipment: Such as steam turbine, engine, compressor, press, injection molding machine, vulcanization machine, cryogenic equipment thermal insulation materials (including cold), sealing filler, gasket, etc.;
Interlayer thermal insulation, muffling system and fire-proof board for the car bodies of aircraft, automobiles, ships, cold chain cars, etc., and ovens of all kinds of proprietary heating equipment;
Interlayer thermal insulation, muffling system and fire-proof board for the car bodies of aircraft, automobiles, ships, cold chain cars, etc., and ovens of all kinds of proprietary heating equipment;
Bushing of high temperature flue, air duct, gasket for conveying high temperature liquid, expansion joint;
All kinds of thermal insulation industrial kiln door seal, furnace curtain.

2. Used as high temperature filter material

Fiberglass needle mats are primarily engineered for use as high-temperature filtration media.Carbon black, steel, non-ferrous metal processing, chemical industry and other fields for high temperature gas environmental protection filtration;
It is the ideal exhaust gas purification material for cars and motorcycles, and is also used as a ternary catalyst carrier for motorcycles and automobiles, and has the functions of sound absorption, heat insulation, shock absorption and fire prevention.

3. Used as fire protection material

Heat insulation, fire insulation layer and automatic fire curtain for important places such as archives, vaults and safes in high-grade office buildings;
Fire doors, fire curtains, fire blankets, fire MATS for catching sparks, protective clothing for high temperature environments, and other heat-insulating sewing articles covering fire protection.

4. As a new fire insulation building material

Building air conditioning system, water heater insulation, floor heating insulation blanket, etc. (instead of traditional insulation film)

5. New energy field

Power battery safety protection, energy storage battery safety protection, solar energy, air energy and other new energy fields of thermal insulation, fire prevention, explosion protection and other safety protection, under high temperature, high voltage insulation and safety protection of lines, instruments and related parts.

6. Used in special areas of transportation (aircraft, trains, ships, automobiles, etc.)

Thermal insulation of power systems of aircraft and trains, such as engines and related pipes and components;
Thermal insulation of ship's power cabin systems, such as steam turbines, associated pipes and components, and bulkheads; Fire blanket, fire blanket, welding blanket, escape blanket, etc.;
The heat shield of the automobile engine, the protection of the exhaust pipe of the heavy oil engine, the composite brake friction liner of the high-speed racing car;
Heat insulation, fire prevention, explosion protection and other safety protection of new energy vehicle battery warehouse; Insulation and safety protection of automotive lines, instruments and related components at high temperatures and voltages.