Melamine fiber dry spinning method

Abstract

The invention discloses a melamine fiber dry spinning method. The melamine fiber dry spinning method comprises the following steps that 1, after deaeration is carried out on melamino-formaldehyde resin with the solid content of 70 percent to 85 percent, the viscosity of 1,000 Pa.s and the temperature of 20 DEG C to 90 DEG C, the melamino-formaldehyde resin is conveyed to a spinning manifold through a stabilized pressure pump; 2, the melamino-formaldehyde resin passes through a spinning pump, a filter component, a spinneret, a spinning channel, a godet wheel, an oil feeding wheel and a winding machine, spun filaments are obtained, or the melamino-formaldehyde resin passes through the filter component, the spinneret, the spinning channel, a dragger, a feeding wheel and a falling bucket, and the spun filaments are obtained; 3, the spun filaments are put in a drying oven to be cured to obtain melamine fibers. The method is simple in manufacturing process, low in equipment processing difficulty, low in investment, low in cost, high in production efficiency and capable of achieving mass production, the manufactured melamine fibers are even in quality, and long filament bundles or fixed-length short cut fibers can be obtained.

Description

technical field

[0001] The invention belongs to the field of artificial fiber preparation, and in particular relates to a dry spinning method of melamine fiber. Background technique

[0002] Melamine fiber, also known as melamine-formaldehyde resin fiber, is a high-performance chemical fiber obtained from melamine-formaldehyde resin through spinning and post-processing. The fiber has excellent characteristics such as thermosetting, temperature resistance, dimensional stability, no heat shrinkage, non-melting and dripping, high oxygen index, non-flammable, self-extinguishing after leaving fire, and good dyeing property. Therefore, melamine fiber is widely used in fire protection, transportation, aviation, construction and other fields. It can also be blended with other fibers to prepare new chemical materials, such as melamine fiber blended with aramid fiber and cotton fiber. , due to its outstanding air permeability, moisture absorption, heat resistance, and flame retardant...