Basic Info.
Application
Insulators, Fire and Heat Protection
Type
Fire and Heat Protection
Chemistry
Organic Insulation
Classification
Organic Insulating Material
Transport Package
Carton Box with Pallets
Product Description
Product Description
Polyimide fibres are organic fibres with an imide ring in the main chain of the molecule.
Basic indicators for heat resistant products: Indicators | Unit | Standard values | Testing methods | Remarks |
Breaking Strength | cN/dtex | >4.5 | GB/T 14337 | |
Modulus | cN/dtex | 30-50 | | Adjustable to suit your needs |
Elongation at Break | % | 15-30 | GB/T 14337 | Adjustable to suit your needs |
Density | g/cm3 | 1.41 | GB/T 14335 | |
Resilience Rate | % | <3 | GB/T6503 | |
Starting Decomposition Temperature | ºC | 567 | TG-DTG | |
Long-term Operating Temperature | ºC | 260 | | |
Short-term Operating Temperature | ºC | 380 | | |
Extreme Oxygen Index | % | ≥38 | GB/T 5455 | |
Short Cut Fiber
Spec.:Fineness 0.9~6dtex,Chopped Length 38~76mm,Breaking Strength 4-7 cN/dtex.Colors:Primary colours, black, dark green, etc.Applications: Flame retardant, warm, antibacterial and health care, it can be widely used in special protective yarns and garments, health care textiles, high temperature dust removal and industrial heat insulation felts, functional structural composites, etc. Long Filaments
Spec.:Fineness 90~3300dtex,Breaking Strength>4.0cN/dtex(600mPa)Colors:Primary colours, black, dark green, etc.Applications:High and low temperature resistant, insulating, irradiation resistant, can be used in aerospace, rope, insulation sheathing, etc. Chopped Fibers
Spec.:Fineness 1~6dtex,Chopped Length 3~12mmColors:Primary colours, black, dark green, etc.Applications:Insulation, thermal insulation, can be applied to paper, composites, etc.
Product Parameters
1. Flame retardant properties
1.1 Extreme Oxygen Index(LOI)
The LOI is the minimum volume fraction of oxygen required to maintain a complete combustion state of a specimen in a mixture of oxygen and nitrogen. As a new generation of high performance fibres, polyimide fibres have better flame retardancy than traditional speciality fibres, with an ultimate oxygen index of 38%. Commonly used flame retardant fibres | Polyimide Fiber | Meta Aramid (PMIA) | Polyphenylene sulfide(PPS) | Polysulfone-based amides(PSA) |
LOI (%) | >38 | 28~30 | 34 | 33 |
1.2 Burning damage
Using the GB/T 5455-2014 vertical burning method, the length of damage to the Polyimide fabric is 1/5th of that of the Aramid IIIA fabric, which is currently the mainstream fabric for firefighting protective clothing on the market. Item | 100% Polyimide fabric | Aramid IIIA fabric | 50% Polyimide +50% Flame retardant Viscose fabrics | 50% Aramid +50% Flame retardant Viscose fabrics | Firefighting protective clothing standards |
Flame retardant properties [after 25 washes] | Length of damage in warp direction | 10mm | 46mm | 12mm | 60mm | ≤ 100mm |
Length of damage in weft direction | 8mm | 48mm | 13mm | 57mm |
1.3 Smoke toxicity
Polyimide fibres do not melt and drip when exposed to high temperatures and open flames. The flame retardant fabrics made of polyimide fibres have passed the BSS7238 and 7239 material combustion tests, and the smoke emission is extremely low and non-toxic, and the smoke density is 1/200 of the ABD0031 Airbus standard; according to the test method for the smoke density of decomposition of building materials (GBT8627-2007), the smoke density rating (SDR) of pure polyimide felts is only 0.12. Polyimide fibres are the ideal raw material for textiles in confined spaces, for insulation in special working conditions, and for home and protective products.
Polyimide fiber has excellent flame retardant properties, enabling it to provide safe, long-lasting protection in more complex and hostile fire environments. It can also significantly improve the flame retardant properties of other materials, such as eliminating melt drips, reducing damage and reducing smoke and toxicity. Polyimide fabric flaming smoke test |
| Smoke density(Dm) | Toxic gas content (Unit: ppm) |
CO | HCN | HF | HCl | SO2 | NOX |
Polyimide Fabric | 1 | 32 | 0.7 | <0.5 | <1 | <0.5 | <2 |
Aviation standard values | 200 | 3500 | 150 | 100 | 150 | 100 | 100 |
2. High temperature resistance
Polyimide fibres have a long-term service temperature of 260-300°C, an initial decomposition temperature of 567°C, good dimensional stability and a high strength retention rate. As a filter material, it can significantly increase the service life of flue gas filter bags, improve filtration accuracy and reduce dust emissions.
3 Weather and chemical resistance
Polyimide fibres have excellent resistance to radiation, acids and alkalis, and oxidation, and can maintain excellent mechanical and chemical stability in extreme environments such as the atmosphere, the seabed, ice fields and deserts.Packaging & Shipping
Catons with Pallet
Company Profile
Qingdao Ever Leading Imp&Exp Co., Ltd., which is located in the beautiful seaside city, Qingdao, has been built and started export business from the year 2014. Our company has built 3 different factories to produce Anti-cutting glove related products, including raw material and finished goods, this will fully meet our customers' different requirements, and this is also our main purpose and advantage: High Quality One-stop Service.
Now we can produce all kinds of yarn products of more than 80, 000 tons per year. Major products including: Fiberglass yarns(C/E/S class with silicone, paraffin and starch sizes), Stainless Steel wire, UHMWPE and Covered yarn. Our products are widely used in many industries, especially fire-proof cloth and Anti-cutting gloves. With excellent quality, our products have got great feedback from customers all over the world.
We always take quality first, users first as aim, keeping development and improvement. With many years' experience in the production and sales, we believe that we can go further in this field and offer better service for our customers!
FAQ
1. Are you manufacturer or trading company?
---Manufacturer, and we have 3 separate factories in North China.
2. How is the delivery period?
---Usually we can deliver within 15 days after confirming order with the customer.
3. How is the package?
---Export standard package with pallets.
4.What's the payment term?
---TT, LC, DP and Bank Contract.
5. How is the MOQ?
---100KG or 1 pallet, according to different product.
6. Could you send free sample for test?
---Yes.
Any questions,contact us now!
Address:
Room 2709, Building 1, Zijin Plaza, No. 658, Jinggangshan Road, Qingdao Economic Development Zone, Qingdao, Shandong, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Construction & Decoration, Light Industry & Daily Use, Security & Protection, Textile
Management System Certification:
ISO 9001, HACCP
Company Introduction:
Qingdao Ever Leading Imp&Exp Co., Ltd., which is located in the beautiful seaside city, Qingdao, has been built and started export business from the year 2014. Our company has built 3 different factories to produce Anti-cutting and fire-proof related products, including raw material and finished goods, this will fully meet our customers′ different requirements, and this is also our main purpose and advantage: High Quality One-stop Service.
Now we can produce many kinds of yarn products of more than 80, 000 tons per year. Major products including: Fiberglass yarns(C/E/S class with silicone, paraffin and starch sizes), Stainless Steel wire, UHMWPE, Fiberglass sleeve and Covered yarn, and we are keeping to develop new products by research. Our products are widely used in many industries, especially fire-proof cloth and Anti-cutting gloves. With excellent quality, we have exported to more than 30 countries, and our products have got great feedback from customers. Until now, our annual export value is more than 50 million US dollars, and the value is increasing every year, so we have huge confidence on our quality and competitive advantage.
We always take quality first, users first as aim, keeping development and improvement. With many years′ experience in the production and sales, we believe that we can go further in this field and offer better service for our customers! We warmly welcome friends from all over the world to visit our factory, and hope that our business will grow better together!