Predispersed Rubber Chemicals HEXA-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
HiDispersion Predispersed Rubber Chemicals
HEXA-80 Accelerator for curing of natural and diene synthetic rubbers, a formaldehyde donor
Product description
Composition
80% Hexamethylene tetramine
20% EPDM/EVA binder and dispersing agents
Appearance
White or grey-white granules
Density,20 oC
Approx. ~ 1.25 g / cm3 (20oC)
Physiological properties : See safety data sheet (MSDS)
Raw material characteristics of HEXA:
Melting point
~ oC
Evaporation loss
≤ 0.3 %
HEXA content
≥ 98.5 %
Sieve residue 63µm
≤ 0.3 %
Ash content
≤ 0.4 %
Use Characteristics HiDispersion HEXA-80 is a slightly basic accelerator for slow vulcanization. It causes the cure to start almost as soon as it has been added. The rate of cure as a whole is fairly slow. HiDispersion HEXA -80 provides a high degree of crosslinking. The compounds containing HEXA-80 receive activation and secondary acceleration from mercapto, sulphenamide, thiuram and dithiocarbamate accelerators. HiDispersion HEXA-80, in combination with resorcinol, is especially used as a formaldehyde donor for the rubber to metal bonding (steel cords). Rubber to metal bonding is effectively influenced by the excellent dispersion of the granulated chemical. The additional use of an antioxidant is recommended to improve the resistance to ageing of vulcanizates, which have been accelerated by HiDispersion HEXA-80. Generally blooming does not occur.
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 HEXA is assured.
Dosage levels Accelerator: primary (for thick section articles): 0.6 - 0.8 phr with 3 - 4 phr sulfur;
secondary: 0.1 - 0.35 phr with 0.25 - 1.0 phr mercapto or thiuram accelerator and
2.0 - 3.5 phr sulfur
Hardening: 10% of total phr of hardening phenolic resin e.g. SP 6700 and SP 6701.
For formaldehyde donor: 1.3 - 1.6 phr with 2.5 - 3.2 phr HiDispersion Resorcinol-80;
Applications Slow-curing compounds, thick section articles, roller coverings, light-colored and transparent articles, formaldehyde donor for resorcinol-based adhesive compounds and hardening phenolic resin-based high hardness compounds.
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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