POM Formosa Plastics FORMOCON® FM090

POM Formosa Plastics FORMOCON® FM090（Taiwan‑China）

POM Taiwan‑Plastics FM090 is standard‑flow low‑mold‑deposit copolymer‑acetal(POM‑C) injection grade. It delivers balanced mechanical performance, broad service‑temperature range, excellent dimensional‑stability, outstanding wear‑resistance & self‑lubrication, widely used across multiple industrial fields台湾塑胶工...。

Main Applications

Automotive: fuel‑pump components, fuel‑cap, seat‑belt parts, handle‑bars, power‑window components. Electrical & electronic: gears, bearings & structural‑parts for household appliances such as washing‑machine and juicer‑timer; various electronic components. Precision machinery & hardware: high‑precision gears, bearings, cams, screws, handles, pipe‑fittings & hardware parts requiring low‑friction and wear‑resistance. Consumer goods: zippers, buttons, toys, sports‑equipment。

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	9.0	g/10 min
	Molding shrinkage(flow,3 mm)	ASTM D‑955	1.8‑2.2	%
Mechanical Properties	Tensile yield strength	ASTM D‑638	60.8	MPa
	Elongation at break	ASTM D‑638	60	%
	Flexural strength	ASTM D‑790	93.2	MPa
	Flexural modulus	ASTM D‑790	2550	MPa
	Compressive strength (1% strain)	ASTM D‑695	31.4	MPa
	Compressive strength (10% strain)	ASTM D‑695	108	MPa
	Izod notched impact 23 ℃	ASTM D‑256	64	J/m
	Rockwell hardness M‑scale	ASTM D‑785	80	—
	Rockwell hardness R‑scale	ASTM D‑785	115	—
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)	DSC	165	℃
	CLTE (flow direction)	ASTM D‑696	8.5×10⁻⁵	cm/cm/℃
Electrical Properties	Volume resistivity(23 ℃)	ASTM D‑257	1.0×10¹⁴	Ω·cm
	Surface resistivity	ASTM D‑257	1.0×10¹⁶	Ω
	Dielectric strength(2 mm)	ASTM D‑149	24	kV/mm
	Dielectric constant(50Hz‑1MHz)	IEC 60250	3.80	—
Flammability	UL94	UL 94	HB	—

Injection‑Molding Parameters

表格

Process Stage	Parameter	Recommended Range	Unit	Remarks
Pre‑drying	Drying temperature	≥80	℃	Drying recommended for wet raw material, stabilize production & surface appearance。
	Drying time	≥2	h
Barrel temperature	Rear zone	150‑180	℃	Narrow thermal‑processing window. Melt temperature ≤220 ℃, overheat causes formaldehyde decomposition。
	Middle zone	170‑190	℃
	Front zone	180‑200	℃
	Nozzle temperature	Slightly lower than front zone	℃	Prevent drooling。
	Melt temperature(POM‑C)	190‑210(target 205)	℃	Measured by air‑shot method。
	Mold temperature	80‑90(range 75‑120)	℃	Higher mold‑temperature improves crystallization, gloss and reduces sink‑marks。
Injection parameters	Injection pressure	40‑130	MPa	Higher value for thin‑wall articles, lower for thick‑wall。
	Hold‑up pressure	—	MPa	Adequate hold‑pressure required to compensate shrinkage。
	Back pressure	Keep low(max 200 bar)	bar	High back‑pressure induces shear‑overheat degradation。
	Injection speed	Medium‑fast, multi‑stage	—	Too‑slow: flow marks; too‑fast: jetting & shear heat。
	Screw speed	Not excessively high	rpm	Avoid excessive rotational speed to reduce shear heat。
	Barrel residence time	＜20	min	Max 7 min retention under 240 ℃。
Shutdown procedure	Short‑term stop	Cool barrel below 150	℃	Long‑term shutdown: fully purge barrel with PE / PP。
	Purge note	PE / PP	—	Keep barrel‑screw assembly clean。
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。