▎ 摘　　要

NOVELTY - Sand tire tread rubber material comprises 30-40 pts. wt. natural rubber, 10-30 pts. wt. styrene-butadiene rubber, 40-60 pts. wt. carbon black, 5-10 pts. wt. white carbon black, 5-8 pts. wt. anti-aging agent, 1-4 pts. wt. microcrystalline wax, 5-10 pts. wt. aromatic hydrocarbon oil, 3-7 pts. wt. zinc oxide, 3-7 pts. wt. plasticizer, 2-5 pts. wt. modifying auxiliary agent and 2-4 pts. wt. sulfur. USE - Used as sand tire tread rubber material. ADVANTAGE - The method can efficiently improve the wear resistance, puncture resistance and collapse resistance of the tire tread, improves surface strength, strong tear resistance and water resistance, has good skid-proof and breakthrough performance, more uniform stress performance, and can be well adapted to soft soil e.g. sandy land. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing the sand tire, comprising (S1) accurately taking natural rubber, styrene-butadiene rubber, carbon black, white carbon black and other materials into the internal mixer for full stirring, mixing, and dispersing, the final refining process is to accurately taking materials e.g. sulfur and other accelerators and masterbatch into the internal mixer for stirring, mixing and dispersing, after the rubber is finished mixing, cooling and parking, so that the various raw materials of the rubber have enough time to contact, and at the same time release the stress generated during the processing, (S2) dividing calendering into film calendering and skeleton material calendering, in film calendering: heating the final mixing rubber through the extruder and producing a thin film or composite film with a thickness of 1-4 mm on a two-roll or four-roll calender, in skeleton material calendering: adding steel cord, polyester cord and nylon cord inner curtain surface between two layers of composite films, cooling the calendered film and skeleton material, isolating the cooled semifinished products with polypropylene pads or plastic pads, and storing in designated areas for molding or cutting processes, extrusion is heating the final mixing rubber by the extruder, producing the tread, sidewall and apex rubber of a certain width and thickness through the head of the compound machine, cooling the sidewall and tread, and cooling the extruded apex rubber and bonding to the bead on the bonding machine to form a bead, which is used in the molding process, (S3) cutting the skeleton material products produced by calendering according to a certain angle and width, splicing the cut products and dividing by lap joints or butt joints, isolating the semifinished products after cutting with polypropylene pads and rolling up, and storing in the designated area for use in the forming process, (S4) laminating the semifinished products prepared in the previous processes layer by layer on the molding machine and assembling into a tire blank, and (S5) heating and pressurizing the molded green tire on the vulcanizer with high-temperature steam and high-pressure nitrogen through the mold and capsule to form a tire in the form of a combination of tread, inner curtain and steel cord.