Users' questions

What is the function of stearic acid?

What is the function of stearic acid?

Stearic acid is used most often to thicken and retain the shape of soaps (indirectly, through saponification of triglycerides composed of stearic acid esters), and it is also used in shampoos, shaving creams, and detergents.

Is stearic acid an emulsifier?

Stearic acid is an emulsifier by itself, but can also be used with triethanolamine. When mixed, the two compounds react and become a paste called ‘triethanolamine stearate’ that helps to create a loose emulsion that is easily absorbed by the skin. Lush use a vegetable-based stearic acid, derived from palm oil.

What is the function of zinc oxide in rubber compounding?

Natural rubber is converted into a more durable material through a chemical process called vulcanization. Therefore, zinc oxide adds strength to rubber compounds and improves their resistance against heat/abrasion and helps guard against ultraviolet degradation.

Why stearic acid is used in rubber?

Stearic acid for rubber applications provide lubrication and improved viscosity, as well as a softer texture for the finished product. The amount of stearic acid determines the final thickness of the rubber. While a little bit aids in lubrication and activation, indexing too high can have the opposite effect.

Where does the stearic acid in rubber come from?

The stearic acid of rubber grade that we offer comes from well-known organisations. This rubber grade stearic acid is used in the processing of the rubber compound as a dispersing agent, plasticizer and lubricant. 6. Paints & Coatings

What kind of acid is used for vulcanization of rubber?

Stearic acid is the common name for octadecanoic acid, which is a saturated fatty acid stearic acid for rubber vulcanization accelerator. Rubber Grade stearic acid offered by us is sourced from reputed organizations.

Why is stearic acid used as a dispersant?

Adding stearic acid as a secondary dispersant will disperse the filler ingredients in the rubber. While this activator component helps keep the molecules spread throughout the rubber, too much will cause problems.

What happens if you use too much stearic acid?

Using too much stearic acid can make rubber too hard. This result likely happens because this stearic acid creates crosslinks of the macromolecules. When it creates too many links, the rubber becomes harder.