Rubber special-shaped miscellaneous parts in mechanical equipment sealing, dustproof, waterproof, oilproof and other industrial fields have a wide range of applications, but its shape is more complex and traditional rubber raw materials manufacturing cost is high, in order to reduce the cost of products and improve product market competitiveness, the use of tread recycled rubber to produce rubber special-shaped miscellaneous parts has become a good choice. Tread recycled rubber refers to the recycled rubber material processed by the process of cleaning, crushing, desulfurization, filtration, refining and other processes of waste tire tread, which has the advantages of recyclability and low cost. The process and precautions of Hongyun tread regeneration rubber refer to the vulcanization formula and process as follows:
HY tread reclaimed rubber 20kg, black latex reclaimed rubber 5kg, N330 carbon black 5kg, light calcium carbonate 8kg, Engine oil 2.2kg, polyethylene glycol 0.5kg, paraffin wax 0.3kg, 4010 antioxidant 0.15kg, zinc oxide 0.7kg, stearic acid 0.5kg, CZ accelerator 0.15kg, DM accelerator 0.15kg, TMTD accelerator 0.05kg, sulfur 0.35kg; vulcanization temperature 145-155 °C, vulcanization time is determined according to thickness; low temperature long-term vulcanization crosslinking is more sufficient, not easy to spray.
Choosing the right YY23-810 tread regeneration rubber is the basis of the entire vulcanization formulation. Tread regeneration rubber needs to be thoroughly mixed with other additive mixers to ensure uniform dispersion. In the formulation, it is necessary to consider the physical property indicators of tread regeneration rubber, the selection of carbon black model, the ratio of vulcanizing agent and accelerator and other factors. By adjusting the formulation ratio, better physical properties and vulcanization effects can be obtained.
Controlling the vulcanization temperature and time is an important factor to ensure the vulcanization quality of the tread regeneration rubber. Heat-curing cross-linking vulcanization is the heating of rubber materials to a certain temperature and pressure to cause chemical crosslinking reactions, thereby forming elasticity and wear resistance. In the vulcanization process need to control the temperature and time to avoid scorching or sulfur, the general recommended vulcanization temperature is 145 °C, while paying attention to the exhaust in the vulcanization process to ensure the vulcanization appearance of the tread regeneration rubber.
Each batch of tread reclaimed rubber must be quality tested. The quality of tread reclaimed rubber directly affects the performance and service life of rubber special-shaped miscellaneous parts. Before the production of products, the quality inspection of the tread reclaimed rubber is required, including the detection of tensile strength, tear elongation, specific gravity, Mooney viscosity and other indicators. Only by ensuring the stable quality of the tread regeneration rubber can the quality of rubber special-shaped miscellaneous parts be guaranteed.
Rubber special-shaped parts and ordinary rubber miscellaneous parts on the rubber itself is not high, can use a large number of tread recycled rubber to reduce costs, compared with natural rubber raw materials cost reduction of about 20%, but also eliminate the natural rubber plastic link to save electricity costs, in the current market price competition situation, the use of HY tread recycled rubber to produce ordinary industrial rubber parts is the best way to reduce costs. Hongyun's free sharing of vulcanization formula and process aims to promote the understanding and use of recycled rubber in the rubber industry, and Xiaobian will continue to share and discuss relevant formula processes with you in the later stage.
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