POM Formosa Plastics FORMOCON R6

POM Formosa Plastics FORMOCON® R6（Taiwan‑China）

POM Taiwan‑Plastics R6 is impact‑modified toughened copolymer‑acetal(POM‑C) injection grade, low‑mold‑deposit, standard flowability. While maintaining comprehensive properties of POM, specially optimized for toughness and impact‑resistance台湾塑胶工...。

Main Applications

Automotive: fuel‑pump components, fuel‑cap, seat‑belt parts, door‑lock‑system components, rear‑view‑mirror assemblies and other high‑toughness auto‑parts. Electrical & electronic: gears, bearings & structural parts for washing‑machine, juicer‑timer, power‑tool accessories; connectors & housings. Precision machinery & hardware: high‑precision gears, bearings, cams, screws, handles, pipe‑fittings, hardware fasteners & snap‑fits requiring wear‑resistance, low‑friction and enhanced toughness. Consumer goods: zippers, buttons, toys, sports‑equipment and other daily‑use articles台湾塑胶工...。

Physical‑Mechanical‑Thermal‑Electrical Properties

表格

Property Category	Item	Test Standard	Value	Unit
Physical Properties	Density	ASTM D‑792	1.41	g/cm³
	Water absorption(24 h, 23 ℃)	ASTM D‑570	0.22	%
	MFR (190 ℃ / 2.16 kg)	ASTM D‑1238	6.0	g/10 min
	Molding shrinkage	—	1.8‑2.2	%
Mechanical Properties	Tensile yield strength	ASTM D‑638	≈60.8	MPa
	Elongation at break	ASTM D‑638	65	%
	Flexural strength	ASTM D‑790	≈93.2	MPa
	Flexural modulus	ASTM D‑790	≈2550	MPa
	Izod notched impact 23 ℃	ASTM D‑256	≈6.9	kJ/m²
	Rockwell hardness M‑scale	ASTM D‑785	80	—
Thermal Properties	HDT (1.8 MPa)	ASTM D‑648	110	℃
	HDT (0.45 MPa)	ASTM D‑648	158	℃
	Vicat softening point	ASTM D‑1525	162	℃
	Melting point(DSC)	ASTM DSC	165	℃
	CLTE	ASTM D‑696	8.45×10⁻⁵	cm/cm/℃
Electrical Properties	Volume resistivity(23 ℃)	ASTM D‑257	1×10¹⁴	Ω·cm
	Surface resistivity	ASTM D‑257	1×10¹⁶	Ω
	Dielectric strength(2 mm)	ASTM D‑149	24	kV/mm
	Dielectric constant	ISO IEC 250	3.8	—
Flammability	UL94	UL 94	HB	—

Injection‑Molding Parameters

表格

Process Stage	Parameter	Recommended Range	Unit	Remarks
Pre‑drying	Drying temperature	80‑90	℃	Drying recommended, eliminate bubble & silver‑streak, stabilize production & surface appearance。
	Drying time	2‑4	h
Barrel temperature	Rear zone	170‑190	℃	Narrow thermal‑processing window. Melt temperature ≤220 ℃, overheat causes formaldehyde decomposition。
	Middle zone	180‑200	℃
	Front zone	185‑210	℃
	Nozzle temperature	180‑210	℃	Close to / slightly lower than front‑zone temperature to prevent drooling。
	Melt temperature	190‑210	℃	Typical working range for copolymer POM‑C。
	Mold temperature	80‑90	℃	Higher mold‑temperature improves crystallization, dimensional‑stability, gloss and reduces sink‑marks。
Injection parameters	Injection pressure	80‑130	MPa	Thin‑wall:120‑150 MPa；Thick‑wall:80‑120 MPa。
	Hold‑up pressure	40‑80	MPa	Adequate hold‑pressure required to compensate shrinkage。
	Back pressure	0.5‑2.0	MPa	Low back‑pressure required; high back‑pressure induces shear‑overheat degradation。
	Injection speed	Medium / medium‑fast	—	Too‑slow: flow marks; too‑fast: jetting & shear heat。
	Screw speed	50‑100	rpm	Avoid excessive rotational speed to reduce shear heat。
	Barrel residence time	＜20	min	Max 7 min retention under 240 ℃, avoid long‑term high‑temperature retention。
Shutdown procedure	Short‑term stop	Cool barrel below 150	℃	Long‑term shutdown: fully purge barrel with PE / PP。
	Purge note	PE / PP	—	Must purge halogen‑containing polymers before POM processing to prevent violent chemical reaction。
Post‑treatment	Annealing(optional)	—	—	Relieve residual stress for high‑precision parts working under non‑ambient service condition。

Note: All data for reference only, subject to official TDS and COA。