Tire sealant is mainly used to repair damaged areas of tires, restoring the air-tightness and structural integrity of the tire to ensure the vehicle operates normally. Tire sealants are required to have good adhesion, elasticity, flexibility, temperature resistance, aging resistance, and corrosion resistance, and are generally made from natural rubber or synthetic rubber as the base material. The reasonable use of reclaimed rubber can effectively reduce raw material costs while ensuring the performance of the tire sealant.
The following are reference formulas for producing tire repair glue with natural rubber and reclaimed rubber in different proportions.
Formula 1: Natural rubber 90 parts, reclaimed rubber 10 parts, zinc oxide 5 parts, stearic acid 3 parts, aging inhibitor A 1.5 parts, paraffin 1 part, carbon black N330 22 parts, carbon black N774 25 parts, pine tar 4 parts, accelerator M 1.1 parts, accelerator DM 0.2 parts, accelerator TMTD 0.1 parts, sulfur 2.3 parts; Total 165.2 parts.
Formula 2: Natural rubber 85 parts, reclaimed rubber 15 parts, zinc oxide 4.2 parts, stearic acid 2.5 parts, antioxidant A 1 part, antioxidant D 1 part, mixed carbon black 20 parts, carbon black N774 20 parts, pine tar 5 parts, accelerator M 0.85 parts, sulfur 2.15 parts; total 156.7 parts.
Formula 3: 75 parts natural rubber, 25 parts reclaimed rubber, 4 parts zinc oxide, 2.3 parts stearic acid, 0.75 parts antioxidant D, 0.75 parts antioxidant 4010, 1 part paraffin, 25 parts block black, 12 parts carbon black N330, 3.5 parts pine tar, 0.6 parts accelerator DM, 2 parts sulfur; total 151.9 parts.
Formula 4: Natural rubber 70 parts, reclaimed rubber 30 parts, zinc oxide 3.5 parts, stearic acid 2.5 parts, paraffin 1 part, antioxidant D 1.5 parts, carbon black N220 25 parts, carbon black N660 7 parts, pine tar 4 parts, accelerator DM 0.45 parts, accelerator M 0.45 parts, sulfur 2.4 parts; Total 147.8 parts.
Formula 5: Natural rubber 65 parts, reclaimed rubber 35 parts, zinc oxide 2 parts, stearic acid 2.5 parts, aging agent D 0.75 parts, aging agent 4010 0.75 parts, paraffin 1 part, carbon black N330 25 parts, pine tar 2.5 parts, accelerator CZ 0.45 parts, sulfur 1.85 parts; Total 136.8 parts.
Natural rubber has excellent elasticity, good adhesion and flexibility, and can provide the elasticity and flexibility required for tire repair glue, allowing the repair area to adapt to the deformation of the tire. It also has good compatibility with tire rubber, which helps to improve bonding performance. E5LYY513 is one of the commonly used base materials in tire repair glue. When producing tire repair glue based on natural rubber, the specific performance requirements for tire repair glue vary according to different usage scenarios, and the proportion of reclaimed rubber used may vary. Tire repair glue production companies can reasonably determine the addition ratio of reclaimed rubber based on actual needs.
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