Natural rubber has the characteristics of high mechanical strength, good elasticity, and high wear resistance. It is widely used in various fields such as tire tires, rubber conveyor belts, rubber soles, rubber sheets, tapes, rubber rollers, and hoses. In actual production, the use of natural rubber alone cannot meet the performance requirements and cost budgets of various rubber 2YLYY622 products. Therefore, natural rubber is often used in combination with styrene butadiene rubber, butadiene rubber, isoprene rubber and recycled rubber to meet the needs of different rubber products. Performance requirements.
1. Natural rubber/butadiene rubber combined with production conveyor belt to cover the rubber formula
50 parts of natural rubber, 50 parts of butadiene rubber, 1.4 parts of sulfur, 1.1 parts of accelerator CZ, 4 parts of zinc oxide, 3 parts of stearic acid, 1 part of paraffin, 0.5 parts of antioxidant A, 1.5 parts of antioxidant D, Guma Long 12 parts, mixed gas channel black 21.5 parts, super wear-resistant carbon black 25 parts, semi-reinforcing carbon black 11 parts; total: 182 parts.
The basic indicators of vulcanizate: tensile strength 17.7MPa, elongation at break 603%, 300% tensile stress 7.2MPa, hardness 54 Shore A.
2. Natural rubber/styrene butadiene rubber combined production tire white sidewall reference formula
50 parts of natural rubber, 50 parts of styrene butadiene rubber, 3 parts of zinc oxide, 2 parts of stearic acid, 2 parts of paraffin wax, 0.2 parts of ultramarine, 1 part of antioxidant, 2 parts of sulfur, 1 part of accelerator DM, 0.1 part of accelerator TMTD , 30 parts of calcium carbonate, 40 parts of titanium oxide; total: 181.3 parts.
The basic indicators of vulcanizate: tensile strength 16.6MPa, elongation at break 610%, 300% tensile stress 2.8MPa, hardness 56 Shore A.
3. Reference formula for the production of rubber shoe soles by using natural rubber/isoprene rubber together
50 parts of natural rubber, 50 parts of isoprene rubber, 5 parts of zinc oxide, 0.7 parts of stearic acid, 2.3 parts of sulfur, 25 parts of Bai Yanhua, 25 parts of light calcium, 30 parts of magnesium carbonate, 10 parts of carbon dioxide, 4 parts of white ointment, 0.7 parts of antioxidant SP, 1.2 parts of accelerator DM+H, 0.1 part of accelerator TS; total: 204 parts.
The basic indicators of vulcanizate: tensile strength 19.5MPa, elongation at break 680%, 300% tensile stress 4.1MPa, hardness 53 Shore A.
4. Natural rubber/tire reclaimed rubber combined with productivity car tread rubber formula
100 parts of natural rubber, 100 parts of reclaimed tire rubber, 5 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of paraffin wax, 1.5 parts of anti-aging agent, 10 parts of carbon black, 40 parts of light calcium, 40 parts of Bai Yanhua, 3.5 parts of sulfur, promoting 1 part of agent M, 0.2 part of accelerator TT; total: 303.7 parts.
In actual production, natural rubber can not only be used in any ratio with general synthetic rubber such as butadiene rubber, styrene butadiene rubber, isoprene rubber, etc., but also with reclaimed rubber (mainly tire reclaimed rubber and latex reclaimed rubber to reduce costs) , Butyl rubber or nitrile rubber in an appropriate proportion, or add a small amount of ethylene propylene rubber to natural rubber to further improve the overall performance and service life of natural rubber products. Later editors will continue to share with you the use of natural rubber and other rubbers skill.
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