PA6 RUIMEIFU MF800 Resin

Material Introduction: PA6 RUIMEIFU MF800 (Jiangsu Ruimeifu) is a medium‑viscosity general‑purpose injection‑molding PA6 resin. It delivers good mechanical strength, toughness, wear resistance, electrical insulation and processing flowability with well‑controlled monomer content (≤0.5%). Due to the inherent hygroscopicity of PA6, strict drying is required before processing.

Main Applications

Fiber spinning: Staple fiber, filament fiber and others.

Engineering‑plastic modification: Base resin for reinforced‑, toughened‑modified nylon compounds.

Automotive parts: Fuel hoses, oil storage components, protective covers, support brackets, wheel arch covers, engine hoods, door handles and other automotive components.

Mechanical parts: Bearings, gears, cams, pulleys, pump impellers, fan blades, sealing rings, wear‑resistant bushings, etc.

Electronic & electrical: Electrical coils, cable connectors, rollers, cable sheaths, switches and other components.

Performance Parameters

Performance Category	Test Standard	Unit	Typical Value	Remarks & Interpretation
Physical Properties
Density	GB1033‑86	g/cm³	1.13	General‑purpose injection‑molding PA6
Relative Viscosity	GB/T11832‑93	‑	2.80±0.03	Medium‑viscosity grade
Monomer Content	S chromatographic internal‑standard method	%	＜0.5	Well‑controlled monomer index
Moisture Content	GB6509‑86	%	＜0.06	Raw material requirement
Molding Shrinkage	‑	%	1.2‑1.9	‑
Mechanical Properties
Tensile Strength	GB1040‑92	MPa	75	‑
Elongation at Break	GB1040‑92	%	148	‑
Flexural Strength	GB9341‑88	MPa	90	‑
Flexural Modulus	GB9341‑88	MPa	2500	‑
Notched Impact Strength	GB/T1043‑93	kJ/m²	5.5	‑
Rockwell Hardness	GB9342‑88	‑	72.2 R	‑
Thermal Properties
Melting Point	‑	℃	215‑220	‑
HDT (1.8 MPa)	GB1843‑79	℃	75	‑
Electrical Properties
Volume Resistivity	GB1044‑70	Ω·cm	1.8×10¹³	‑
Surface Resistivity	GB1044‑70	Ω	2.4×10¹³	‑
Dielectric Constant	GB1044‑70	‑	0.65	‑
Dielectric Loss Tangent	GB1044‑70	‑	5.0×10⁻²	‑

Injection Molding Parameters

Processing Item	Recommended Range / Condition	Notes & Explanations
Drying Treatment	Hot‑air drying at 80‑100 ℃ for at least 4‑6 h; vacuum drying preferred.	Critical operation. Keep moisture ≤0.2% to avoid hydrolysis, bubbles, silver streaks and strength drop. Raw material moisture for MF800 shall be ＜0.06%. Use immediately after drying or seal properly for heat preservation.
Melt Temperature	230‑280 ℃ general range.	Depends on equipment and articles. Melting point 215‑220 ℃. Do not exceed 300 ℃; avoid long‑time high‑temperature residence to prevent degradation and discoloration.
Mold Temperature	60‑90 ℃ for most parts.	Higher mold temperature improves crystallinity, surface gloss and mechanical performance yet increases molding shrinkage. Lower mold temperature brings better toughness for thin‑wall articles. HDT of MF800 is 75 ℃.
Injection Pressure	60‑100 MPa.	Low‑viscosity PA6 with good flowability but fast cooling. Higher pressure is needed for complex or thin‑wall parts; excessive pressure will cause flash.
Injection Speed	Medium‑high speed.	Fast filling prevents short‑shot and flow marks caused by rapid cooling; overly fast injection may lead to poor venting and gas marks.
Back Pressure	0.5‑1.0 MPa (5‑10 kgf/cm²).	Proper back‑pressure homogenizes melt and improves venting; excessive back‑pressure reduces plasticizing efficiency and may trigger overheating.
Screw Speed	Medium speed (50‑120 rpm recommended).	Avoid excessive shear heat build‑up.
Runner & Gate	Runner and gate dimensions shall not be too small.	PA6 solidifies fast; sufficiently large gate ensures smooth filling.
Shutdown Notice	Purge barrel with PE / PP of good thermal stability on pause or shutdown to prevent carbonization of residual PA6; turn off heating system for long‑term shutdown.	‑
Molding Shrinkage	1.2%‑1.9%.	Typical for MF800, subject to process parameters and product design.

Disclaimer: All above data is for reference only.