Predispersed Rubber Chemicals DTDM-80
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Post Date:
Aug 29,2018
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Expiry Date:
Feb 25,2019
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Detailed Description:
Detailed Product Description
Manufacturer experienced,Stable , continuable,environmental
ISO9001,ISO14001,REACH pre-register.Powder,Granular,Masterbatch
Product description
Composition
80% morpholine disulfide (4,4'-dithiodimorpholine),
20% EPDM/EVA binder and dispersing agents
Appearance
Grey granules
Density,20 oC
Approx. ~ 1.25 g / cm3 (20oC)
Physiological properties : See safety data sheet (MSDS)
Raw material characteristics of DTDM:
Melting point
~ 118 oC
Evaporation loss
≤ 0.5 %
DTDM content
≥ 96 %
Sieve residue 63µm
≤ 0.8 %
Ash content
≤ 0.5 %
Sulfur content
25.0-29.0%
Use Characteristics The curing accelerator HiDispersion DTDM-80 liberates free sulphur which, in contrast to normal sulphur, mainly forms mono and diether bridges under normal curing conditions. These are responsible for excellent heat ageing resistance of the vulcanizates. HiDispersion DTDM-80 causes no blooming effects which are generally observed when using thiuramdisulphides as crosslinking agents. In contrast to compounds with HiDispersion CLD-80, compounds with HiDispersion DTDM-80 stand out for their increased safety in scorch properties. When the full curing temperature is reached, a quick vulcanization follows. Acid compounding ingredients may cause a premature decomposition of HiDispersion DTDM-80 and thus reduce the excellent scorch safety (long scorch time). In general the use of HiDispersion DTDM-80 is recommended whenever favourable compression set behaviour and advantageous ageing behaviour is required.
Processing Advantages The thermoplastic, excellent compatible EPDM/EVA binder which is combined with active dispersing promoters allows much more easily and quickly incorporation and excellent dispersion in the rubber mixing. In this way, optimal activity of the effective DTDM is assured.
Dosage levels NR and SBR with carbon black light color fillers
HiDispersion DTDM-80 1.0 - 2.0 1.0 - 2.0 phr
HiDispersion S-80 0.25 - 1.0 0 .25 - 1.0 phr
HiDispersion CBS-80 0.5 - 0.75 - phr
HiDispersion MBTS-80 - 0.3 - 0.5 phr
HiDispersion TMTD-80 - 0.3 - 0.5 phr
NBR and IIR NBR IIR
HiDispersion DTDM-80 1.0 - 2.0 1.2 - 2.0 phr
HiDispersion S-80 0.0 - 0.5 1.0 - 1.75 phr
HiDispersion CBS-80 1.5 - 3.0 - phr
HiDispersion MBTS-80 - 1.0 - 2.5 phr
HiDispersion TMTD-80 0.5 - 2.5 1.0 - 2.5 phr
For sulfurless vulcanization
HiDispersion DTDM-80 1.25 - 2.0 phr
HiDispersion CBS-80 1.0 - 1.5 phr
HiDispersion TMTD-80 1.0 - 1.5 phr.
Applications articles resistant to reversion based on NR, such as tyre carcasses and age-resistant articles based on SBR, NBR and EPDM.
Packing Net 25 kg cartons with plastic inner.
Storage stability In original closed containers under cool and dry conditions max. 2 years.
Handling Consult material safety data sheet (MSDS) for additional handling information.
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