Rubber ring is a common rubber product in our daily life and industrial production, which is widely used in automobiles, electrical appliances, pipelines and other fields. Hongyun natural latex recycled rubber is made by recycling waste natural rubber products, and does not need to extract rubber from raw materials, so the cost is lower. The use of natural latex recycled rubber in the rubber ring instead of part of the natural rubber production rubber ring, after the use of many enterprises, can reduce the cost of raw materials by about 20% under the premise of ensuring the quality of the original rubber ring. In the current situation of fierce competition in cost performance, the use of natural latex reclaimed rubber as the main raw material has become the first choice.
First，Hongyun natural latex recycled rubber production rubber ring general formula: Hongyun natural latex recycled rubber 40kg, natural rubber 5kg, styrene-butadiene rubber 5kg, N330 carbon black 4kg, silica powder 30kg, engine oil 4kg, Paraffin wax 0.4kg, polyethylene glycol 0.8kg, zinc oxide 1.5kg, stearic acid 0.9kg, 4010 antioxidant 0.35kg; M accelerator 0.35kg, DM accelerator 0.35kg, TMTD 0.07kg, sulfur 0375kg; vulcanization temperature and time depending on the specific formula and product requirements, generally at 140-150 degrees Celsius, the time is 5-20 minutes.
Recipes can be optimized through comparative experiments:
1. Appropriately increase the amount of carbon black, which can improve the wear resistance and tensile strength of the rubber ring.
2. Adding an appropriate amount of nanosilica powder to the filler can improve the density and hardness of the rubber ring.
3. Choosing an efficient accelerator can shorten the vulcanization time and improve production efficiency.
4. The addition of styrene-butadiene rubber can make the rubber ring not easy to tear off by hand.
Second, the general process flow of Hongyun natural latex recycled rubber production rubber ring
1. Mix Hongyun natural latex recycled rubber with carbon black, calcium powder, oil, anti-aging agent, etc. in a mixer or kneader according to the formula ingredients, and mix it through the mill or kneading machine;
2. After the mixing is sufficient, the tipping bucket feeds until the accelerator, vulcanizing agent, etc. are added to the mill, and the rubber is quickly dispersed and parked for more than 6 hours.
3. After cutting the mixed rubber into strips, add it to the mold for vulcanization treatment, usually using the method of hot air vulcanization or steam vulcanization.
4. The vulcanized rubber ring is trimmed after cooling, and the quality inspection of the finished rubber ring is carried out, and the packaging is carried out after passing the qualification.
Third, Hongyun natural latex recycled rubber Y23-6-28Y production rubber ring experimental data and test results
According to the above formula and process, the rubber ring produced by us has a hardness of 70 degrees, a tensile strength of 13MPa, and an elongation at break of 430%, which meets the requirements of the rubber ring. After 72 hours of hot air aging test, its hardness change is less than ±5 degrees, the tensile strength retention rate is greater than 80%, and the elongation at break retention rate is greater than 70%, showing good heat aging resistance.
Natural latex recycled rubber is an ideal raw material for the production of rubber rings at low cost costs, and through reasonable formula design and process control, rubber rings with excellent performance can be produced. The application of natural latex recycled rubber can not only effectively reduce resource waste and environmental pollution, but also provide high-performance rubber materials for all walks of life. It is believed that with the continuous advancement of technology and the expansion of the scope of application, natural latex recycled rubber will play a more important role in the future development.
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