Oil-resistant rubber sheet is a sheet rubber product with a certain thickness and a large area made of vulcanization with oil-resistant rubber as the main material, which can maintain good stability in the oil medium, and is generally processed from nitrile rubber with excellent oil resistance as raw material. With the intensification of market competition and the rising price of raw materials, how to reduce production costs under the premise of ensuring the quality of oil-resistant rubber sheets has become an important problem faced by enterprises.
1. Nitrile reclaimed rubber
Nitrile reclaimed rubber is made of waste nitrile rubber products through crushing, desulfurization, refining and other processes, which retains the basic performance characteristics of nitrile rubber, excellent oil resistance, good compatibility with nitrile rubber, and the price is much lower than that of nitrile rubber, which can replace nitrile rubber in whole or in part to produce oil-resistant rubber sheets, and effectively reduce the cost of raw materials under the premise of ensuring the oil-resistant properties of oil-resistant rubber sheets.
60 parts of nitrile rubber, 40 parts of 75% oil-resistant nitrile reclaimed rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant A, 20 parts of mixed carbon black, 40 parts of carbon black N774, 15 parts of light calcium carbonate, 4 parts of dibutyl phthalate, 5 parts of pine tar, 3 parts of coumaron resin, 0.45 parts of accelerator D, 0.55 parts of accelerator DM, 1 part of accelerator M, 2.5 parts of sulfur; Total 199.5 copies.
2. Sub-brand nitrile rubber
Sub-brand nitrile rubber is a secondary product in the production process of nitrile butadiene rubber with some performance indicators slightly lower than the genuine product, with the core properties of nitrile rubber, good oil resistance, low product price, can be used alone or combined with nitrile rubber in any proportion to produce oil-resistant rubber sheet, effectively reduce the cost of raw materials. When using sub-brand nitrile rubber to reduce the production cost of oil-resistant rubber sheet, it is recommended to appropriately increase the mixing temperature and time to ensure uniform dispersion.
3. Tire reclaimed rubber
Tire reclaimed rubber is made of waste tire rubber powder as raw material processing of recycled rubber, a wide source of raw materials, low product price, high mechanical strength, wear resistance, flexural resistance, although its own oil resistance is weak, but it can be used with nitrile rubber E4LYY1120 in an appropriate proportion to produce oil-resistant rubber sheet (tire reclaimed rubber mixing ratio is controlled among 20%-50%), which significantly reduces the cost of raw materials under the premise of ensuring the oil resistance of the finished rubber sheet. Compared with pure nitrile rubber, the oil-resistant rubber sheet compound mixed with tire reclaimed rubber has better processing performance.
4. Neoprene reclaimed rubber
Neoprene reclaimed rubber is made of waste rubber products (such as cable sheaths) with high neoprene content as raw materials, and is made by crushing, screening, desulfurization, refining and other processes, which has certain oil resistance, high tensile strength, good elongation at break, excellent bonding performance, and can be used with nitrile rubber to produce nitrile oil-resistant rubber sheets, which can effectively reduce the cost of raw materials and save labor and electricity under the premise of ensuring the oil resistance of finished products.
When using nitrile rubber to produce oil-resistant rubber sheets, reasonable selection of rubber raw materials is the key to reducing production costs, rubber sheet manufacturers can also reasonably design the formula according to the specific needs of oil-resistant rubber sheets, appropriately adjust the production process parameters, and discuss related issues with you later.
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