Spiral high-performance synthetic fiber bundle

Abstract

The invention relates to a spiral high-performance synthetic fiber bundle. The spiral high-performance synthetic fiber bundle comprises a fiber inner core positioned at the center of the fiber bundleand peripheral fibers spirally wound on the fiber inner core; the fiber inner core and the peripheral fibers respectively are a modified synthetic fiber and unmodified synthetic fibers. A spiral winding mode ensures that the inner core which takes charge of strength can more stably take an effect of promoting overall strength inside; the synthetic fibers, such as a high-temperature-resistant filler modified synthetic fiber, a polarity modified fiber of which a polarity is regulated, a functional group grafting modified synthetic fiber capable of introducing functional groups and even the unmodified fiber capable of reducing cost, are wound on the periphery of the fiber inner core and on the surface along the axial overall length; the fibers with different functions are alternatively exposed on the surface, so that the advantages of high-temperature resistance, polarity, nonpolarity, the functional groups with different functions, high strength and the like all can be played, thereby implementing maximum utilization of properties of the fibers, such as a reinforcing effect, dispersity, binding power with a matrix and the like.

Description

technical field [0001] The invention relates to a high-performance synthetic fiber bundle, in particular to a helical fiber bundle used in the field of fiber reinforcement. Materials that can be reinforced by the fiber bundle include but are not limited to cement, concrete, plastic, resin, rubber and the like. Background technique [0002] Synthetic fiber is a fiber prepared from synthetic resin by melt drawing or melt spinning. This fiber has high strength and can be used to strengthen materials such as cement, concrete, plastics, resins, and rubber. Compared with glass, synthetic fibers are alkali-resistant, corrosion-resistant, safe, and have no harm to the human body. Compared with steel fibers, synthetic fibers are non-sticky, lightweight, rust-free, corrosion-resistant, and less expensive. [0003] However, synthetic fibers also have their own defects, which greatly limit the application of fibers. First of all, synthetic fibers have poor heat resistance. In plastic...

AI Technical Summary

Problems solved by technology

[0003] However, synthetic fibers also have their own defects, which greatly limit the application of fibers

First of all, synthetic fibers have poor heat resistance. In plastic or rubber high-temperature molding materials, if the heat-resistant temperature of synthetic fibers is lower than the molding temperature of plastics and rubber, synthetic fibers will lose their strength due to high temperatures during the molding process.

Second, the dispersion of synthetic fibers is poor

Third, the strength of synthetic fibers is generally not high, usually lower than that of glass fibers or steel fibers, which leads to the reinforcement effect of synthetic fibers being worse than that of glass fibers and steel fibers

Fourth, the adhesion between synthetic fibers and the matrix is ​​generally not good

For example, non-polar synthetic fibers and polar rubber matrix, synthetic fibers without functional groups and SiO-containing 2 Cement and concrete, polar fibers and non-polar plastic matrix, etc., all have poor adhesion, which also leads to poor fiber reinforcement

[0004] Therefore, it is difficult to find a synthetic fiber in the current technology that integrates the advantages of high temperature resistance, high dispersion, high strength, high adhesion, adjustable polarity and non-polarity, and adjustable functional group introduction.

Images