Wear-resistant antiskid polyurethane solid tire and preparation method thereof

Abstract

The invention discloses a wear-resistant antiskid polyurethane solid tire and a preparation method thereof. The polyurethane solid tire is prepared from a metal rim and a polyurethane layer, by addingisophorone diisocyanate into polyurethane, the structure of a reaction monomer is changed, and the content of a soft segment in a polyurethane molecular chain is increased, so that a solid tire is not easy to harden at low temperature, good flexibility is kept, the antiskid effect is improved, and the wear resistance is improved; according to the preparation method, a shot blasting device is usedfor carrying out surface treatment on the metal rim, high-speed shot blasting sand is blasted by the shot blasting device to impact the surface of the metal rim, the surface roughness of the metal rim is increased, polyurethane is poured after shot blasting is finished and an adhesive is coated, and the compactness between a polyurethane layer and the metal rim is improved; the shot blasting device separates shot blasting sand according to different particle sizes, damage to the device caused by large-size particles is avoided, and the situation that the quality of the solid tire is reduced due to large particle size difference is avoided.

Description

technical field [0001] The invention relates to the technical field of solid tire production, in particular to a wear-resistant and anti-slip polyurethane solid tire and a preparation method thereof. Background technique [0002] Solid tires are replacement products of traditional pneumatic tires used in various industrial vehicles. At present, solid tires are mostly rubber tires. Harsh road conditions such as uneven roads and freezing at low temperatures will cause early damage to tires and affect their service life. On the other hand, rubber solid tires use a large amount of carbon black for reinforcement in order to obtain better performance, so that the tires will form black marks on the road surface during driving and pollute the environment. It is not suitable for use in some occasions that require high environmental cleanliness; and Polyurethane is a material with excellent comprehensive properties, and it can obtain unique comprehensive properties without adding any...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a wear-resistant and non-slip polyurethane solid tire and a preparation method thereof: (1) it is prepared by a metal rim and a polyurethane layer adhered to the outer surface of the metal rim, and the polyurethane A solid tire composed of a metal rim, and isophorone diisocyanate is added to the polyurethane, which changes the structure of the reactive monomer itself and increases the content of the soft segment in the polyurethane molecular chain, making the prepared solid tire difficult to harden at low temperatures , to solve the problem that the existing solid tire raw material polyurethane has more rigid groups in the monomer, which makes the polyurethane molecular chain too stiff, which directly causes the carcass to become hard, which is not conducive to the use in low temperature environment and weakens the problem of tire skid resistance (2) By using the shot blasting device to carry out surface treatment on the metal rim, the shot blasting sand hits the surface of the metal rim, which increases the surface roughness of the metal rim. Since the polyurethane layer and the metal rim are directly adhered together, the roughness is improved Increase the actual bonding area between the polyurethane layer and the surface of the metal rim, improve the bonding force of the polyurethane layer, prevent the coating from cracking, and help eliminate the sag phenomenon; after the shot blasting is completed, the polyurethane is poured after coating the adhesive, which solves the existing problem There is a problem that the metal rim of the solid tire of the rim has not been processed, so that the rim and the polyurethane layer are not tightly combined; (3) by fitting the filter disc on the column in the storage chamber through the mounting sleeve, the teeth on the outer edge of the filter disc The grain is meshed with the first gear; the shot blasting sand is added to the storage room and falls on the sieve plate in the filter disc, the second motor drives the second gear to run, thus driving the filter disc with the column as the axis It rotates in the storage room, which drives the shot blasting sand to move continuously on the sieve plate, so that the shot blasting sand with a particle size larger than the sieve plate aperture is retained on the sieve plate, and the shot blasting sand with a particle size smaller than the sieve plate aperture passes through the sieve hole. It falls into the hopper and is transported to the acceleration mechanism to accelerate, which solves the problem that the existing shot blasting machine does not screen the shot blasting sand, so that the shot blasting sand with too large particles is easy to cause damage to the inside of the shot blasting machine, and the surface of the metal rim is treated The problem that the effect is not good

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