Rubber accelerators M
Rubber auxiliary MBT
Specificatin | Chemical Analysis: |
Product Name | Rubber Accelerator MBT (M) | Chemical Name: | 2-mercaptobenzothiazole |
| | CAS No.: | 149-30-4 |
Molecular Formula: | C7H5NS2 | Molecular Weight: | 167.26 |
Product Information:
Specification
Appearance (visual inspection): | Light yellow powder | Assay content% ~ | 95 |
Initial M.P.¥: | 170.0 | Loss on drying %: | 0.50 |
Ash content %: | 0.50 | Residues(150um)%: | 0.10 |
Compacted bulk density (kg/m3) | 560-600 | Bulk density (kg/cm3): | 400-440 |
Density at 25¥ (g/cm3) | 1.42-1.52 | | |
Typical Properties
It is yellow powder with little osmyl and taste bitter. The density is 1.42-1.52.it is soluble in ethyl acetate, ethanol, solution of NaOH and Na2CO3, insoluble in benzene, water and gasoline.Lower explosion limit is 21g/m3.
Recommended Applications
In NR compounds, MBT based vulcanization systems exhibit less reversion upon overcure than other systems. Vulcanizate obtainedwith MBT tend to have a relatively low modulus but very good aging properties.
To achieve a faster cure and a higher modulus. MBT can be boosted by the use of secondary accelerators, such as
ZBEC, ZDEC, TMTD or DPG.
For the vulcanization of EPDM or IIR rubbers, MBT is a well established component of many existing vulcanization systems. MBT also finds application in latex form cure systems. It is non-staining and non-discoloring.
Handling and Storage recommendations
Store MBT in a cool, dry, well-ventilated area, avoiding exposure of the packaged product to direct sunlight. Usually the shelf time is 24 months while the recommend use of time is within 12 months.
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