Epoxy curing agent Knowledge [Zinc stearate supply and procurement] What is the use of adding zinc stearate in the production of flexible rubber joints?

[Zinc stearate supply and procurement] What is the use of adding zinc stearate in the production of flexible rubber joints?

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Flexible rubber joints, referred to as rubber joints, rubber soft joints are made of Fabric-reinforced rubber parts are composed of flat union joints, metal flanges or threaded pipe flanges. They are used for pipe vibration isolation, noise reduction and displacement compensation joints. It is a pipe joint with high elasticity, high air tightness, medium resistance and weather resistance.

It is understood that zinc stearate is a white powder, insoluble in water, soluble in hot ethanol, benzene, toluene, turpentine and other organic solvents; when exposed to acid, it decomposes into stearic acid and the corresponding Salt; has fire hazard under dry conditions, auto-ignition point is 900°C; is hygroscopic.

Zinc stearate is mainly used as a lubricant and release agent for styrene resin, phenolic resin, and amine resin. It also functions as a vulcanization activator and softener in rubber. It is mainly used in flexible rubber joints containing natural rubber NR, BR, SBR, NBR, etc. Zinc stearate is the active agent (FDA approved) of the acid vulcanization accelerator of flexible rubber joints. It will significantly affect the The speed and number of rubber cross-links generated in flexure rubber joints.

PS: Rubber also has the functions of vulcanization activator (replacing zinc oxide and stearic acid because they are easy to precipitate and bloom), and softener (increasing filler activity makes it easier to process and eat materials).

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