PA6 BALING CHEMICAL YH800 Resin

Material Introduction: PA6 BALING CHEMICAL YH800 is a medium‑viscosity general‑purpose injection‑molding PA6 resin. It features good flowability and easy‑processing performance, together with favorable mechanical strength, wear resistance, chemical resistance and electrical insulation. Due to its hygroscopic nature, strict drying is required before processing.

Main Applications

Injection molding: General injection‑molded parts, such as gears for precision machinery, housings, hoses, oil‑resistant containers, cable sheaths and textile equipment components.

Fiber spinning: For monofilament and bristle filament production.

Engineering plastic modification: Base resin for modification such as flame‑retardant compounding.

Electronic & electrical: Electrical coils, cable connectors, switches and other electronic‑electrical components benefiting from excellent insulation performance.

Performance Parameters

Performance Category	Test Standard / Condition	Unit	Typical Value	Remarks & Interpretation
Physical Properties
Density	GB 1033‑86	g/cm³	1.156	General‑purpose injection‑molding PA6
Relative Viscosity	GB/T 1632‑93	‑	2.85±0.03	‑
Hot‑Water Extractables	‑	%	≤0.5	‑
Moisture Content	GB 6509‑86	%	＜0.07	Raw material index
Monomer Content	Chromatographic internal‑standard method	%	＜0.3	‑
Mechanical Properties
Tensile Strength	GB 1040‑92	MPa	60.7	‑
Elongation at Break	GB 1040‑92	%	48.1	‑
Flexural Strength	GB 9341‑88	MPa	86.6	‑
Flexural Modulus	GB 9341‑88	MPa	2087	‑
Rockwell Hardness	GB 9341‑88	R	72.2	‑
Notched Impact Strength	GB 9342‑88	kJ/m²	20.1	‑
Molding Shrinkage	GB/T 1043‑93	%	0.93‑1.30	‑
Thermal Properties
Melting Point	‑	℃	215‑220	‑
HDT @1.8 MPa	1.8 MPa	℃	71.0	‑
Electrical Properties
Volume Resistivity	GB 1044‑70	Ω·cm	1.5×10¹⁴	‑
Surface Resistivity	GB 1044‑70	Ω	2.4×10¹³	‑
Dielectric Constant	GB 1044‑70	‑	0.65	‑
Dielectric Loss Tangent	GB 1045‑70	‑	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 ≤0.1% (raw material moisture＜0.07%) to avoid hydrolysis, bubbles, silver streaks and strength drop. 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 ℃. Avoid temperature＞300 ℃ and long high‑temperature residence to prevent degradation & discoloration.
Mold Temperature	60‑80 ℃ for most parts.	Mold temperature affects crystallinity; proper mold temperature ensures good appearance and performance for YH800.
Injection Pressure	60‑100 MPa, adjust per product & mold design.	Low‑viscosity PA6 with good flowability yet fast cooling; adjust according to structure and wall‑thickness.
Injection Speed	Medium‑high speed.	Faster speed facilitates cavity filling.
Back Pressure	0.5‑1.0 MPa (5‑10 kgf/cm²).	Proper back‑pressure homogenizes melt and improves venting.
Screw Speed	Medium speed.	Prevent 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	0.93%‑1.30% (typical for YH800).	Subject to process parameters and product design.

Disclaimer: All above data is for reference only.