Intermediate adhesive material for retreaded tires

Abstract

The invention discloses an intermediate adhesive material for retreaded tires. The adhesive material disclosed by the invention contains resorcinol-formaldehyde resin, hexamethoxy methyl melamine, zinc oxide (in high dose ratio), and N-ethyl-N-phenyldithiocarbamic acid zinc salt serving as a low-temperature promoter. The key points of the intermediate adhesive material include: the intermediate adhesive material is prepared from various raw materials including No.20 natural rubber, cis-1,3-butadiene rubber (BR)9000, abietic styrene butadiene rubber (SBR)1500, resorcinol-formaldehyde resin, zinc oxide (in high dose ratio), stearic acid, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine,poly(1,2-dihydro-2,2,4-trimethyl-quinoline), poly(2-dihydroquinoline), carbon black N330, carbon black N660, coumarone-indene resin, aromatic oil, zinc ethylphenyl dithiocarbamate, hexamethoxy methyl melamine, N-cyclohexylbenzolthiazole-2-sulfenamide, 2-mercaptobenzothiazole, and insoluble sulphur (IS)-7020( the sulfur content is 80 percent). The adhesive material disclosed by the invention is mainly used in the intermediate adhesive layers of retreated diagonal tires and retreaded steel-belted radial tires and when the adhesive material disclosed by the invention is used, the tire tread and tire body adhering strength of the intermediate adhesive material is improved obviously; the H drawing force of the adhesive material with all-steel cords and nylon cords is improved to reduce the tire tread and tire body separation phenomenon of the finished retreaded diagonal tires and retreaded steel-belted radial tires; and thus, the driving safety and service life of the diagonal tires and the retreaded steel-belted radial tires are improved.

Description

Technical field [0001] The invention relates to an intermediate bonding compound for retreading tires, which is applied to retreading bias tires and retreading all-steel wire radial tires. Background technique [0002] After the tires are used in the later stage and the tread wear reaches the wear mark (or most of the parts are relatively intact after the tires have quality defects), the tires should be replaced. If they continue to be used, the driving safety of the car will be affected. The remaining carcass and sidewall parts of tires are relatively intact and have great use value. If they are thrown away or burned at will, it will affect environmental protection on the one hand and waste resources on the other. Therefore, the tire retreading project came into being. [0003] Tire retreading is mainly to vulcanize the pre-cured tread and the original carcass (after the remaining tread is all polished off) to form a whole. Since the rigidity of the carcass is far from th...

AI Technical Summary

Problems solved by technology

[0002] After the tires are used in the later stage and the tread wear reaches the wear mark (or most of the parts are relatively intact after the tires have quality defects), the tires should be replaced. If they continue to be used, the driving safety of the car will be affected

The remaining carcass and sidewall parts of the tire are still relatively intact and have great use value. If they are thrown away or burned randomly, it will affect environmental protection on the one hand and waste resources on the other.

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