MICROCRYSTALLINE WAX

Specifications:

Melting Point: 67~95º C, ASTM D938 Oil Content, %(m/m): 3 Max ASTM D721 Colour: Max 2.5 ASTM D156 Needle Penetration (25 Degree, 1/10 mm): 18 ~ 30 ASTM D1321 Viscosity: 6 ~ 20 GB/T 265 
Microcrystalline wax is a refined mixture of solid, saturated aliphatic hydrocarbons, and produced by de-oiling certain fractions from the petroleum refining process. Microcrystalline waxes differ from refined paraffin wax in that the molecular structure is more branched and the hydrocarbon chains are longer (higher molecular weight). As a result the crystal structure of microcrystalline wax is much finer than paraffin wax, and this directly impacts many of the physical properties. Microcrystalline waxes are tougher, more flexible and generally higher in melting point than paraffin wax.

Microcrystalline wax differs from paraffin wax in that the crystal structure is more branched and the carbon chain is longer. This wax is tougher, more flexible and has a higher tensile strength and melting point. It is are also more adhesive, and its binds to solvents, oil, etc..., and thus prevents the sweating out of compositions. The typical oil content by weight is between 0.5 and 2%.

Application Fields:

Tires, conveyor belts, etc., all kinds of rubber products for high temperature applications. It can be used with chemical antioxidant to extend the scope of protection and to improve the protective effect.

Aapplications:

1) Granular product suitable for use with automatic and manual measurement, in order to ensure dispersion, it is recommended to join in the initial mixing.

2) This product is recommended to use in the internal mixer. The application in the open mill, it is recommended the mixing temperature should exceed the melting point above 10 °C.

3) Tire formula recommended dosage 1-4phr, conveyor belts with 2-6phr, in other rubber products based on experimental results to determine. The recommended maximum dosage is 10phr.

Features:

• The product performs a better and more broad protection against temperature, environment and climate influences than normal paraffin in rubber.
• The product remains a continuous and stable protective film on the rubber surface to prevent rubber products from destruction caused by heat, light, oxygen and ozone attack.
• The product has broad and reasonable carbon number distribution, shows good compatibility with rubber.
• The tailor-made composition ratio of n-alkanes and isoparaffin keeps migration speed stable and reasonable, thereby gives more effective protection.
• White or yellow granules, no coloring, no product contamination, good dispersion behavior.
• The wax protective film is tight and flexible, no cracking and breaking against dynamic stress.

Safety and Transport:

This product is non-dangerous goods according to the general chemicals transport legislation. Proper use will not cause any harm.

Storage:

Stored at room temperature (0-35 °C), in cool, dry and ventilated place, avoid from sun exposure. If stored at higher temperatures, caking and agglomerating may occur, but does not affect its performance.