Rubber Vulcanizing Agent HTS

Rubber Vulcanizing Agent HTS

Chemical Name:
Sodium hexamethylene-1,6-bisthiosulfate dihydrate
Molecular Formula: C6H12Na2O6S4·2(H2O)
Molecular Weight: 390.41
CAS NO.: 5719-73-3
Package: 25kg/bag
Storage Life: 12 months
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Product Details

Vulcanizing Agent HTS 5719-73-3


Description:


Chemical Name

Sodium  hexamethylene-1,6-bisthiosulfate dihydrate

Other Name HF-368( HTS);Wire adhesion additive  ;Anti-reversion agent HTS
Molecular Formula C6H12Na2O6S4·2(H2O)
Molecular Structure  image001.jpg
Molecular Weight390.41
CAS NO.  5719-73-3
Package25kg/bag
Storage Life12 months


Specification:


Appearance

White powder

Content   ≥ %

95.0

Loss on Drying %≤

8.0-11.0

NaCL content %≤

1.0

Residues(150μm) % ≤

 


At present, the bead protection of rubber vulcanization system basically is given priority to with high sulfur and low to promote, crosslinking sulfur mainly for keys, the fatigue resistance and tensile properties of the vulcanizates is good, but more sulfur key heat easily occurs irreversible thermal decomposition and rearrangement, led to the decrease of the crosslinking density, is the physical properties of vulcanizates decreased, the sulfide to return the original.The adoption of effective vulcanization system, that is, through the single sulfur or double sulfur bond cross-linking can inhibit the vulcanization return to the original, but will lead to the vulcanization fatigue resistance and tear resistance properties decline.Another way to improve the vulcanization resistance is to add the vulcanization resistance reversion agent, so that when the vulcanization resistance occurs, a new stable crosslinking bond can be generated to compensate for the loss of the polysulfide bond.At present, there are two kinds of anti-vulcanization reversion agents, HTS and PK900.Sulfide resistant to return the original HTS to insert multiple sulfur key intermediate, form both sulfur and carbon mixed crosslinking bond, when the rubber is in after vulcanization or when heated in the course of using, this kind of mixed crosslinking keys will step by step remove sulfur atom and inhibition of return to the original form a single sulfur key, and the single sulfur than normal single sulphur keys has better flexibility and dynamic performance.PK900 will generate stable c-c cross-linking bond when vulcanization occurs to the rubber, to compensate for the loss of polysulfide bond due to chain break, so as to preserve the density and physical properties of the coach, and improve the thermogenesis performance.







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