A kind of preparation method of high wear-resistant plastic sky wheel liner

Abstract

The invention discloses a highly-wear-resistant plastic sheave liner and a preparation method thereof. The liner consists of the following components in parts by weight: 100 parts of nylon, 10-20 parts of aramid fiber, 15-20 parts of hollow glass beads, 5-15 parts of bauxite, 5-15 parts of barite, 1-3 parts of magnesium stearate, 0.5-1.5 parts of a titanate coupling agent, 10-15 parts of dioctyl phthalate, 1-3 parts of antimony trioxide, 5-10 parts of decabromodiphenyl ether, 10-15 parts of conductive carbon black and 0.5-1.5 parts of an antioxidant. The preparation process is simple, and the prepared plastic liner has good antistatic and flame-retardant properties, can keep relatively high tensile property, and is long in service life; and the sheave liner is good in seasoning crack resistance and moisture resistance, and is particularly suitable for use in severe environments with sprinkling water, strong corrosivity and the like in mines.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to a preparation method of a high wear-resistant plastic sky wheel liner. Background technique [0002] The sky wheel is the conventional wire rope guiding system of the hoist, and its function is to change the direction of wire rope movement during the lifting and running process. Therefore, it is inevitable to interact with the wire rope for a long time. Since the force between the wire rope and the wheel body is relatively large during the operation of the hoist, if there is no protection, there will be severe friction between the wire rope and the metal wheel body, which will not only seriously affect the use of the wire rope. Life, and the wire rope breakage caused by wear and tear will affect the operation safety of the hoist. The function of the sky wheel liner is to separate the steel wire rope from the metal wheel body to prevent the direct contact between the st...

AI Technical Summary

Problems solved by technology

At present, the lining blocks circulating in the domestic market mainly include the following materials: rubber, PVC, PP and ultra-high molecular weight polyethylene, etc.; there are also wooden sky wheel liners. Due to the high requirements for wood material selection, it is difficult to process rope grooves on site. The short service life leads to frequent replacement of wood linings. Therefore, the use of plastic linings to replace wooden linings has become an urgent problem to be solved. On the other hand, mining plastic products require antistatic and flame-retardant properties, and a flame-retardant and Electrostatic plastic liner replaces existing wood liner

[0004] Among them, the low-end products are mainly PP and PVC lining blocks. These two material lining blocks are the first to be used in sky wheels and guide wheels due to their low price and good wear resistance. However, the service life of PP and PVC lining blocks Short, the disadvantages of poor wear resistance and environmental pollution of PVC lining blocks have become less and less accepted by people, making its application more and more restricted, and gradually unable to meet the needs of domestic mines for increasing production and application; on this premise Under the circumstances, major domestic manufacturers have developed mid-range products represented by CPUR pads

Among them, although the CPUR pad has good installation and wear resistance, the aging resistance of the product is short, the production method is backward, and the quality is unstable