Vulcanizator DTDM-80
Chemical Name: 4,4'-dithiodimorpholine
Einecs No.: 203-103-0
MDL:
Pre-dispersed Vulcanizator DTDM-80
Chemical Name 4,4'-dithiodimorpholine
Structural Formula
Molecular Formula C8H16N2 O2S2
Molecular Weight 236
CAS No. 103-34-4
EINECS No. 203-103-0
Typical Properties
Accelerator |
4,4'-dithiodimorpholine(DTDM) |
Percent Active |
80% |
Binder |
EPDM/EVA |
Appearance |
white to cream granule |
Density |
~1.24g/cm3 (20℃) |
Product Description DTDM-80 can release free sulfur under normal vulcanizating conditions and is different from general sulfur to form single and double sulfur bond. It won't present like dithio-thiuram blooming. Acidic component in rubber compounds causes DTDM-80 poor scorch safety. DTDM-80 is usually used in rubber compounds required low compression set and high heat ageing resitance.
Processing Characteristics DTDM powder adheres to devices easily and disperses difficultly in mixing process. However, DTDM-80 has good dosing and mixing property, and won't cake at ordinary temperature and humidity. It has good fluidity, no irritating dust and no material loss. It keeps optimal activity of DTDM and easily disperses in kinds of rubber compounds. Recommend that DTDM-80 is added at last stage of mixing.
Dosage In sulfur curing system:
Rubber Compound Curing System |
NR/SBR with light-colored filler, phr |
NR/SBR with CB, phr |
NBR, phr |
IIR, phr |
DTDM-80 |
1.0 ~ 2.0 |
1.0 ~ 2.0 |
1.0 ~ 2.0 |
1.2 ~ 2.0 |
S-80 |
0.25 ~ 1.0 |
0.25 ~ 1.0 |
0 ~ 0.5 |
1.0 ~ 1.75 |
CBS-80 |
0.5 ~ 0.75 |
- |
1.5 ~ 3.0 |
- |
MBTS-80 |
- |
0.3 ~ 0.5 |
- |
1.0 ~ 2.5 |
TMTD-80 |
- |
0.3 ~ 0.5 |
0.5 ~ 2.5 |
1.0 ~ 2.5 |
In non-sulfur curing system:
DTDM-80 1.25 ~ 2.0 phr
CBS-80 1.0 ~ 1.5 phr
TMTD-80 1.0 ~ 1.5 phr
Applications DTDM-80 is used in NR products with anti-reversion and SBR, NBR and EPDM articles with heat ageing resistance.
Packaging Coextruded paper bags lined with plastic film, net weight 25Kg/bag.
Storage Store in a cool, dry, well-ventilated area away from sunlightfor up to 1 year.
Safety and toxicity Refer to related MSDS.
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