Polyoxymethylene fiber and method for production thereof

Abstract

A polyoxymethylene fiber which comprises a polyoxymethylene copolymer which exhibits a half crystallization time of 30 sec or more when it is cooled from the molten state at 200 DEG C to 150 DEG C at a cooling rate of 80 DEG C / min and then is held at 150 DEG C constantly. The polyoxymethylene fiber has a high strength and a high modulus of elasticity.

Description

technical field

[0001] The invention relates to a high-strength, high-elastic-modulus fiber made of polyoxymethylene copolymer and a manufacturing method thereof. More specifically, by using a polyoxymethylene copolymer with appropriate control of the crystallization rate, improving the fiber manufacturing method, or a combination of the two, the generation of voids in the fibrils during stretching can be suppressed, thereby enabling Preparation of polyoxymethylene fibers with high strength and high modulus of elasticity. Background technique

[0002] The polyoxymethylene (co)polymer with formaldehyde as the main repeating unit is very suitable for A general-purpose molding material such as injection molding, which is widely used as a component of automobiles and electric appliances due to its various characteristics and molding processability.

[0003] On the other hand, due to the characteristics of these mechanical properties, chemical resistance, solvent resistance, el...