logo
Tel: 86-18102756185 Email: heidi@bzyfiber.com
Home / Products / Polyester Staple Fiber / High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory
Quality High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material factory

High Performance PI Staple Fiber 2D*51MM, Chemical Resistant Radiation Proof Electrical Insulation Textile Raw Material

Product Summary
High Performance PI Staple Fiber 2D*51MM Product Overview Our 2D*51MM polyimide staple fiber is a premium industrial special fiber manufactured through advanced dry spinning and high-temperature thermal imidization processes. As one of the organic polymer fibers with the best comprehensive ...
Basic Properties
Place of Origin: China
Brand Name: Octopus fiber
Certification: 9515151-115
Model Number: 2D*51MM
Trading Properties
Minimum Order Quantity: Starting from 1 ton
Price: Free samples sent
Payment Terms: D/A,D/P,T/T
Supply Ability: Customized according to the quantity required by your company
Tags:

Polyester Staple Fibers

Staple Polyester Fibre

Polyester Short Cut Fiber
Product Description
High Performance PI Staple Fiber 2D*51MM
Product Overview

Our 2D*51MM polyimide staple fiber is a premium industrial special fiber manufactured through advanced dry spinning and high-temperature thermal imidization processes. As one of the organic polymer fibers with the best comprehensive performance available, it integrates ultra-high temperature resistance, inherent flame retardancy, high strength, chemical corrosion resistance, radiation resistance, and excellent electrical insulation properties.

Unlike ordinary post-finished flame retardant fibers and medium-temperature resistant fibers, the exceptional performance of polyimide fiber stems from its unique aromatic imide ring molecular structure, which is an inherent material attribute. With a limiting oxygen index of 38% or higher, it will not melt, drip, or burn when exposed to fire, instead forming a dense carbonized layer that blocks heat and flames, with ultra-low smoke and non-toxic combustion characteristics.

Technical Specifications
Parameter Specification
Product Name 2D*51MM High-Performance Polyimide (PI) Staple Fiber
Standard Specification 2D Denier, 51mm Standard Fixed Cut Length
Base Material 100% Aromatic Polyimide Polymer, Dry-Spun & Thermally Cured
Flame Retardant Mechanism Inherent molecular flame retardant, no surface coating, permanent performance
Limiting Oxygen Index (LOI) ≥38%, self-extinguishing, non-flammable in normal air environment
Long-Term Service Temperature 260°C continuous operation, retains over 85% strength after 100h aging at 280°C
Thermal Decomposition Temperature (T5%) ≥570°C under nitrogen atmosphere
Breaking Tenacity ≥4.0 cN/dtex
Dry Heat Shrinkage ＜0.3% at 280°C for 30min
Package 25kg Moisture-Proof Woven Bag, Pallet Packed for Global Bulk Export Shipment
Application Areas
  • High-Temperature Industrial Filtration: Flue gas filter bags for waste incineration, steel, cement and chemical industries
  • Fire & Thermal Protective Apparel: Firefighter combat uniforms, high-temperature workshop heat insulation workwear
  • Aerospace & Transportation: Aircraft engine compartment thermal insulation, high-speed train thermal insulation materials
  • Electrical & Electronic Insulation: H-class electrical insulating paper, transformer insulation layers
  • New Energy & Environmental Protection: Photothermal power generation thermal insulation, energy storage battery fireproof thermal insulation
  • Composite & Special Materials: Reinforcing fiber for high-temperature resistant composite materials
Product Gallery
Polyimide staple fiber close-up showing texture and structure Polyimide fiber manufacturing process demonstration Polyimide fiber applications in industrial settings Polyimide fiber packaging and quality control
Core Advantages
Ultra-High Temperature Stability

Maintains stable mechanical and physical properties at 260°C for long-term continuous use, with thermal decomposition temperature exceeding 570°C.

Inherent Permanent Flame Retardancy

LOI ≥38% with zero melt drip. Self-extinguishes immediately after leaving fire source with ultra-low smoke density.

High Strength & Dimensional Stability

Breaking tenacity above 4.0 cN/dtex with dry heat shrinkage less than 0.3% at 280°C.

Broad-Spectrum Chemical & Radiation Resistance

Excellent resistance to organic solvents, acids, oils, and gamma/UV radiation for harsh industrial environments.

Excellent Processability

2D denier with 51mm standard length compatible with mainstream spinning and nonwoven equipment.

Frequently Asked Questions
What is the long-term service temperature of this polyimide fiber?
Can work stably at 260°C for long periods, retains over 85% strength after 100h aging at 280°C, with thermal decomposition temperature exceeding 570°C.
Is the flame retardant effect permanent? Will it produce molten drip when burning?
Inherent molecular flame retardant (not surface coating) with permanent stable performance. Only carbonizes when burning - no melting, no dripping, no shrinkage.
How does it compare with aramid and PPS fiber in high temperature filtration?
Higher temperature resistance, better chemical resistance and longer service life than PPS and meta-aramid, suitable for harsher conditions with lower total cost of use.
Is 51mm length compatible with needle punching and ring spinning machines?
Yes, 51mm is the standard length for industrial nonwoven and spinning processing, fully compatible with mainstream equipment.
Product Details
Name: Polyimide Fiber
Specification: 2D*51MM
Native/Regenerative: Native
Color: Yellow
More Sizes: Customizable
Siliconized/Non-Silicified: Non-silicified

Ms. Heidi

Overseas Sales Manager

Related Products
Send An Inquiry
Guangzhou Octopus Fiber Co.,Ltd.
With the help of science and technology we are commited to build a clean world, a better future for mankind.
Quick Links
Categories
Contact Us
Tel: 86-18102756185
E-mail: heidi@bzyfiber.com
Add: Room 1510-1511, North Tower, Xijiao Commercial and Trade Center, No. 165 Qiaozhong Middle Road, Liwan District, Guangzhou City, Guangdong Province， China.
Copyright © 2024-2026 Guangzhou Octopus Fiber Co.,Ltd.. All Rights Reserved. | sitemap