A kind of preparation method of cross-linked structure orientation filling reinforced chemical fiber

Abstract

The invention discloses a preparation method of crosslinking structure oriented filling enhanced chemical fiber. The method comprises the following steps: preparing PAcr crosslinked microsphere containing a molecular crosslinking point as a junction point and a PAcr molecular chain as a junction line; uniformly mixing the dried PET chips and the dried PAcr crosslinked microsphere powder, feeding a mixture into a melt spinning machine, and carrying out melt extrusion, cooling, oiling, extension and reeling to obtain the crosslinking structure oriented filling enhanced chemical fiber. According to the invention, in the melt spinning machine and a spinning draft machine, through the effect of a shearing field, an extrusion field and a stretching field during a melt blending process, the PAcr crosslinked microsphere and polyester resin realize oriented arrangement of the crosslinking structure in microsphere along the fiber axis and successive connection of an oriented structure, so that in the PET fiber, a bunched enhanced structure which is characterized in that the molecular crosslinking point is taken as the junction point and the PAcr molecular chain is taken as the junction line is constructed, and the provided polyester fiber has better mechanical properties.

Description

technical field

[0001] The invention relates to the technical field of reinforced chemical fiber materials, in particular to a preparation method of crosslinked structure orientation filled reinforced chemical fiber. Background technique

[0002] In recent years, my country's chemical fiber industry has experienced sustained and rapid growth, but the main reason is the homogeneous growth of conventional varieties. The structural contradictions within the industry have become increasingly prominent, affecting the sustainable and healthy development of the chemical fiber industry. With the development of chemical fiber industry, the application fields of chemical fiber are becoming more and more extensive. The strength of chemical fiber is one of the most important indicators of chemical fiber performance, but the strength of conventional chemical fiber is difficult to meet various special application requirements, which limits the use of chemical fiber, so the demand for deve...

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