Posts about Melt flow rate

Flame Retardant Polycarbonate: Transparency and UL94 V-0

Flame retardant polycarbonate hits UL94 V-0 and stays clear when the retardant sits inside the polymer instead of being mixed into it. Sulfonate[…]

Lubricants for PBAT/PLA films: what 0.3 percent costs

Lubricants for PBAT/PLA films split into two behavior groups at a 0.3 percent loading. Erucamide, oleamide, and EBS keep tensile strength, tear strength,[…]

Why Polymer Properties Differ: Four Structural Levers

Polymer properties differ because the same chemistry can be arranged in different ways. Chain length sets how much the chains entangle, packing sets[…]

POE molecular weight distribution: what PDI 1.6 changes

A narrower molecular weight distribution makes POE easier to process and more consistent in service. The POE molecular weight distribution sets melt strength,[…]

Polypropylene additives: loading ranges by process and job

Polypropylene additives exist because the polymer has gaps that no reactor can close. Antioxidants interrupt the oxidation chain that starts at the tertiary[…]

Polycarbonate blend modification: impact, flow, flame

Polycarbonate blend modification is the practice of mixing PC with elastomers, copolymers, fillers, or reactive compatibilizers so that impact strength, solvent resistance, melt[…]

Polypropylene Resin Selection: PP-H vs PP-B vs PP-R

Polypropylene is not one material. It splits into three families, homopolymer, block copolymer, and random copolymer, and choosing the wrong one breaks the[…]

Plastic gloss: what controls it and how to improve it

Plastic gloss is the share of light a surface sends back in one direction instead of scattering. Read it on a gloss meter[…]

PET chain extender: why resin state beats dosage

A PET chain extender does not respond to how much you add. It responds to what the resin offers. High molecular weight PET[…]

PC/ABS blend: properties, molding and grade selection

Two polymers go into one pellet. Polycarbonate brings impact strength, heat resistance and stiffness. ABS brings melt flow, surface quality and a lower[…]