Colloidal nano sulfur and sulfur colloidal nano encapsulation modification method

Abstract

The invention discloses a colloidal nano sulfur and a sulfur colloidal nano encapsulation modification method. The colloidal nano sulfur comprises the following components: 70 to 80 parts by weight of sulfur, 8 to 10 parts by weight of liquid nitrile rubber, 5 to 7 parts by weight of triglycerin fatty acid ester, 4 to 8 parts by weight of fatty acid monoglyceride and 3 to 5 parts by weight of zinc stearate. The sulfur colloid nano encapsulation modification method comprises steps of mixing, reaction, grinding and cooling. The powder sulfur modified capsule nano colloid provided by the invention can comprehensively improve the dispersion of mixing rubber material and ensure product molding sulfuration to form a homogeneous three-dimensional cross-linked structure elastomer. The feeding mode is flexible and suitable for production processes of different product rubber compounds; and the colloidal nano sulfur is an indispensable crosslinking auxiliary agent for modern rubber formula and efficient production process.

Description

technical field

[0001] The invention discloses a colloidal nano-sulfur, and also discloses a sulfur colloidal nano-encapsulation modification method. Background technique

[0002] Powdered sulfur is the most widely used traditional cross-linking agent in rubber formulations. The appearance of domestic powdered sulfur is light yellow powder with a fineness of 200-300 mesh (48-75μm) and a melting point of 112.8°C. There are other chemical groups. The fineness of powdered sulfur itself is not high, and its dispersing ability is limited in mixing; when the temperature of the rolling roll is high, the powdered sulfur is softened and agglomerated by heating; the chemical groups on the surface of powdered sulfur are easy to Astringent self-agglomeration, friction during processing in low temperature and humidity weather is likely to cause static self-agglomeration; processing methods are only suitable for kneading and mixing, low efficiency, and uneven dispersion. When black spot...