Fischer-Tropsch wax
is mainly composed of straight-chain and saturated high-carbon alkanes with a
molecular weight of 500-1000, which gives the chemical a fine crystal
structure, high melting point, narrow melting point range, low oil content and
low penetration. Degree, low mobility, low melt viscosity, hardness, wear
resistance and high stability.
The significant difference between
Fischer-Tropsch waxes and general-purpose polyethylene waxes (PE waxes) is:
1. Molecular weight. The molecular
weight of Fischer-Tropsch wax is much lower than that of PE wax, the branching
is also less, the crystallinity is high, and it is easy to penetrate into the
high-viscosity macromolecular chain, which significantly reduces the melt
viscosity. The migration is small during the processing and the lubricating
effect is obvious in the later stage.
2. Fischer-Tropsch wax is a
saturated straight-chain alkanes, does not contain double bonds, has strong
antioxidant capacity and good weather resistance.
3. Fischer-Tropsch wax
viscosity is much lower than PE wax. Only about 10. The same lubrication can be
achieved with less usage. The amount used is only 70-80% of the PE wax.
Fischer-Tropsch wax has good compatibility with PVC and can be used as both
internal and external lubricants. It can be used as a good internal lubricant
to effectively control shear conditions, promote flow, control friction and
melting properties, thereby improving thermal stability. At the same time,
Fischer-Tropsch waxes give PVC products the best physical and processing
properties due to their high crystallinity and high linearity. As needed, the
Fischer-Tropsch process can synthesize alkanes of different chain lengths to change
the molecular weight of the final product to form a serialized product.