Butyl recycled rubber is processed from waste butyl inner tubes as raw materials, which has the characteristics of good air tightness, heat resistance, and aging resistance, and is an ideal raw material for replacing virgin rubber to produce rubber inner tubes. In actual production, butyl recycled rubber can be used with butyl rubber, EPDM or natural rubber to produce automobile tubes, so how much butyl recycled rubber is appropriate? How to reduce more raw material costs while ensuring the performance of automobile tubes?
1. Application tips of butyl recycled rubber in automobile inner tubes
When using butyl recycled rubber to reduce the production cost of automotive inner tubes, it is necessary to first choose the appropriate butyl recycled rubber, and give priority to the recycled rubber with high butyl content to better ensure the air tightness of the inner tube. Reasonably control the proportion of butyl recycled adhesive mixing, generally controlled among 30% and 50%; A small amount of EPDM recycled rubber is added to improve the dynamic performance of butyl recycled rubber tubes and extend the service life of automobile tubes. In terms of process, it is recommended to use the two-stage mixing method to ensure the uniform dispersion of recycled rubber and compound.
2. Mixing butyl recycled rubber to produce automobile tube formula
(1) Butyl rubber/butyl recycled rubber is used to produce automobile inner tube formulas
70 parts of butyl rubber, 30 parts of butyl recycled rubber, 4 parts of zinc oxide, 1 part of stearic acid, 25 parts of carbon black N550, 20 parts of carbon black N774, 3 parts of engine oil, 0.35 parts of accelerator DM, 0.75 parts of accelerator TMTD, 1.3 parts of sulfur; Total 155.4 copies.
(2) Completely use butyl recycled rubber to produce automobile tube formulas
100 parts of butyl recycled rubber, 5 parts of zinc oxide, 2.5 parts of stearic acid, 50 parts of carbon black N550, 0.5 parts of accelerator M, 1 part of accelerator TMTD, 2 parts of sulfur; Total: 161 copies.
(3) Butyl rubber/EPDM/butyl recycled rubber is used to produce automobile inner tube formulas
70 parts of butyl rubber, 10 parts of EPDM rubber, 20 parts of butyl recycled rubber, 5 parts of zinc oxide, 1 part of stearic acid, 30 parts of carbon black N550, 20 parts of carbon black N774, 15 parts of paraffin oil, 2 parts of petroleum resin, 0.4 parts of accelerator DM, 1.2 parts of accelerator TMTD, 1.3 parts of sulfur. Total 175.9 copies.
(4) Natural rubber/butyl recycled rubber is used to produce automobile inner tube formulas
80 parts of natural rubber, 20 parts of butyl recycled rubber, 5 parts of zinc oxide, 1.8 parts of stearic acid, 1 part of anti-aging agent 4010, 1 part of anti-aging agent 4010NA, 35 parts of high wear resistant carbon black, 7 parts of naphthenic oil, 0.55 parts of accelerator MBTS, 0.2 parts of accelerator TMTD, 2.35 parts of sulfur; Total: 153.9 copies.
When using butyl recycled rubber in automobile tubes to reduce costs, it is recommended to choose high-fineness, impurity-free filtered butyl recycled adhesive.
55% butyl recycled rubber selects more than 900 waste butyl inner tubes as the main raw material, and is filtered and refined by 80 mesh after desulfurization after picking and crushing, which has the characteristics of good strengthE5LYY812, high fineness, strong air tightness, shock absorption, no taste, heat resistance, ozone resistance, aging resistance, corrosion resistance, rich feel and elasticity, etc., which can be used alone or in combination with butyl raw rubber to produce extruded or molded high-air tightness products, and can also be used in conjunction with ethylene propylene rubber to improve performance.
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