Mobility Improvements Return to the techdata List

Technical parameters: the improvement of mobility
Flow improver promotes the untwisting of long-chain molecules bound, and froms the lubrication between the macromolecules, changing the energy transfer between the macromolecular chains, so that the displacement of the segment becomes easy to improve the flowability of the polymer.
The flow improver of ultrahigh molecular weight polyethylene (UHMW-PE) is mainly referring to an aliphatic hydrocarbon and derivative. Wherein the aliphatic hydrocarbons contain: the number of carbon atoms more than 22 n-paraffins and the low-level paraffin mixtures with its primary component; paraffin is purified to obtain from split oil,etc. Derivative refers to the end of an aliphatic hydrocarbon group, contains an internal one, or one or more (preferably 1 or 2)  carboxyl group, hydroxyl group, ester group, carbonyl group, nitrogen-based formyl group, mercapto group and the like functional group; carbon atoms, greater than 8 (preferably 12 to 50) and the molecular weight of 130 to 2000 (200 to 800 for the best) fatty acids, fatty alcohols, fatty acid esters, fatty aldehydes, fatty ketones, fatty acid amides, fatty mercaptans,etc.. For example, the fatty acids contains: capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid and the like.
Preparation of an effective flow agent (MS2), a small amount (0.6% to 0.8%) can significantly improve ultrahigh molecular weight polyethylene (UHMW-PE) flowability, the melting point is decreased up to 10 ℃,.Then it will be injection molded on an ordinary injection molding machine, and the tensile strength is just a little lower.
Furthermore, modified ultra-high molecular weight polyethylene(UHMW-PE) by styrene and derivatives, the processing performance can be improved to extrude easily and maintain the ultra-high molecular weight polyethylene (UHMW-PE) excellent resistance frictional resistance and chemical resistance. 1,1- diphenyl acetylene, styrene derivative, tetra-hydron-aphthalene can make  ultra high molecular weight polyethylene (UHMW-PE) to obtain excellent workability, while the material has higher impact strength and wear resistance.