High Quality N-Butyl Stearate CAS 123-95-5 Butyl Stearate With Best Price

– Internal Lubrication

– The polar ends (ester groups) of butyl stearate molecules interact with the PVC molecular chains, reducing friction between resin particles and improving melt flowability.

– Reduces degradation caused by shear heat during processing, improving processing efficiency (e.g., extrusion, calendering speed).

– Reduces PVC melt viscosity, decreasing torque and energy consumption.

– Forms a lubricating film at the interface between the melt and processing equipment (e.g., screw, die), preventing adhesion, reducing surface roughness, and enhancing product gloss.

– Allows processing at lower temperatures, avoiding thermal decomposition caused by high temperatures (e.g., HCl release).

– As an auxiliary plasticizer, adding a small amount can improve the flexibility of PVC, but the effect is weaker than that of primary plasticizers (e.g., DOP).

– Promotes the dispersion of fillers (e.g., calcium carbonate), reducing agglomeration.

– Improves the surface smoothness of the final product, reducing defects such as fisheyes and flow marks.

– In transparent PVC products, appropriate use can reduce haze and improve transparency. – When used in conjunction with heat stabilizers (such as calcium-zinc stabilizers), it can delay PVC decomposition.

– When compounded with external lubricants such as paraffin wax and polyethylene wax, it optimizes the balance of the lubrication system.