Loose-type flame-retardant fireproof cotton used for sound insulation and noise reduction in entertainment venues

Pre-oxidized fiber needle-punched non-bonded cotton is a non-bonded thermal insulation material with certain strength and fluffy structure, mainly made from pre-oxidized fibers based on polyacrylonitrile (PAN). After combing and laying the fibers into a web, high-temperature hot air is used for baking to melt and bond the fibers at the cross points. It has comprehensive characteristics such as light weight, environmental protection, and fire resistance, and is used in rail transit, fire protection, industrial insulation, and other fields.

Characteristics of Pre-oxidized Fiber Needle-Punched Non-bonded Cotton

① Fire resistance and flame retardancy

Non-combustible material: Limiting Oxygen Index (LOI) reaches 40-58, decomposition temperature ≥640℃, does not burn or spread when encountering an open flame, does not shrink during combustion, and has no molten drops.

High-temperature resistance: Long-term resistance to 250-280℃ high temperature, can withstand higher temperatures for a short time, suitable for high-temperature sealing and protection scenarios.

② Environmental protection and safety

No chemical additives: No adhesives are used throughout the production process, no formaldehyde, and no dust.

Biocompatibility: The material is soft, non-irritating to the skin, mildew-proof, antibacterial, and has a high water repellency rate (extending service life).

③ Physical properties

Lightweight and low density: One of the lightest thermal insulation materials in the current rail transit field, meeting the needs of vehicle lightweighting.

Multifunctionality: It has excellent heat insulation (low thermal conductivity), sound absorption and noise reduction capabilities, and is resistant to acids, alkalis, oils, and organic solvents. [The above data comes from the internet and the laboratory]

Applications of Pre-oxidized Fiber Needle-Punched Non-bonded Cotton

Rail Transit

Mainly used in the car body insulation layer and sound insulation system of high-speed rail, subways, and EMUs, meeting fire safety standards while reducing vehicle weight. With a high sound absorption coefficient, it effectively reduces wheel-rail noise and air conditioning system resonance, improving passenger comfort.

Used for seat filling, ceiling lining, etc. The non-adhesive process avoids formaldehyde release, the material is soft, mildew-proof, and antibacterial, meeting the environmental requirements of the carriage.

Fire isolation layer for emergency escape passages, which does not release toxic smoke at high temperatures.

Firefighting and Protection

Fire blankets/fire blankets: Wide range of grammage, customizable thickness, can quickly isolate oxygen after covering the flame, and has no secondary pollution, superior to traditional fire extinguishing equipment. For example, covering oil pan fires, electrical equipment short-circuit sparks, etc., can be reused after cooling.

Fire suits/escape equipment: As a fire-resistant inner lining, it can withstand 250-280℃ long-term high temperature and 640℃ or more for a short time, protecting firefighters or steel workers from thermal radiation damage.

Industrial and Construction

Industrial insulation: Used for heat insulation and sealing of pipelines, cold storage, and solar energy equipment. The performance can be enhanced after being compounded with aluminum foil.

Acoustic treatment: Used as sound equipment lining, headphone earmuff filling cotton to absorb mid-high frequency noise; used in the sound insulation hood of air conditioning fans and generator rooms to reduce industrial equipment noise pollution.

E-mail:
gdkaidun@163.com

Phone/WeChat:
86-131-3828-6677

Address:
Room 401, Building 21, No. 1, Keqing Road, Yundonghai Street, Sanshui District, Foshan City, Guangdong Province