Dope – dyed High – strength Meta – aramid

Reasons for recommendation

The fiber is constitutionally flame – retardant, strong, corrosion resistant and high temperature resistant. The dope – dyed process enhances the product’s ecological and environmental protection features and broadens its use in scenarios like electric power operation and fire rescue, among others.

Preparative technique

Using isophthaloyl dichloride, m – phenylenediamine, and the third monomer as raw materials, we use low – temperature solution polymerization and on – line dope – dyed to break through the key technology of fiber cross – linking, realize the construction of a micro – cross – linking structure of the molecular chain, and prepare the fiber by wet spinning.

Features of fibers and finished products

Main Specifications

Staple: 1.67dtex×51mm, 1.82dtex×51mm, 2.22dtex×51mm

Filament: 220dtex/100f, 440dtex/200f, 1320dtex/600f

Relative Standards

Meta – aramid staple fiber (GB/T 31889—2015)

Staple Fibers of Dope – dyed Meta – Aramid (Q/0601 THX010—2019)

Properties of fibers and features of finished products

.Dope-dyed, colorful fiber with high color fastness, green and

environmentally friendly.

.High strength, corrosion resistance, high temperature resistance.

.The fiber is constitutionally flame retardant. The smoldering and sustained.

combustion duration of its fabric is less than or equal to 2s, without melt

drop in the combustion process.

Performance indexes of dope-dyed high-strength meta-aramid

Examples of downstream applications of performance indexes of dope-dyed high-strength meta-aramid

The downstream application guidance

Spinning: Staple fibers can be spun purely or blended with other fibers in any ratio.

Weaving: Filaments are used for knitted or woven fabrics; they can also be processed into twisted yarns for weaving.

Dyeing and finishing: Positive ion dyes are used, with the dyeing and heat-setting temperature≥130℃.

Application of fibers

Clothing textiles:Curtain

Industrial textiles:Military textile/Fire supplie/Aerospace/Protective gear

Q: Upgrades to meta-aramids are ongoing. What are the advantages of

dope-dyed high-strength meta-aramids?

A: The fiber not only has enhanced strength, but also addresses the problem that meta-aramids are not easy to dye. The product is rich in color, and has high color fastness, further expanding its application in protective apparel,flame-retardant clothing, among others. In addition, the application of dyed technology also avoids the pollution and emission brought about by the post-dyeing process, which meets the requirements of green production and is in line with the trend of “ecology first and green development” of China’s economy.