To provide a wholly aromatic polyamide yarn which uses a wholly aromatic polyamide yarn produced by a specific production method, is high in a modulus of elongation, is good in loosening and dispersibility in cement and in physical bonding to the cement, can produce cement molded articles hardly cracked, and is used for reinforcing the cement.
The wholly aromatic polyamide yarn for reinforcing the cement has a single fiber fineness of 50 to 200 dtex and a modulus of elongation of 300 cN/dtex, by spinning a wholly aromatic polyamide by a wet method or a semi-dry, semi-wet method, using a plurality of solvent-removing tanks having an immersion length of 10 m and having a solvent concentration gradient, in a process for removing a solvent after the extrusion of a polymer dope.
JPH09228254A | 1997-09-02 | |||
JP2005015253A | 2005-01-20 | |||
JPH09310223A | 1997-12-02 | |||
JPH0874123A | 1996-03-19 | |||
JPH11222719A | 1999-08-17 | |||
JPH09228254A | 1997-09-02 |