TPEE LG Chem 1055D

TPEE LG Chem 1055D is a highly‑general‑purpose injection‑molding grade thermoplastic polyester elastomer. Featuring high elasticity, high‑low temperature resistance and fatigue resistance, it is widely applied in automotive, electrical‑electronic, industrial‑consumer and other fields.

Main Applications

Automotive Components: Such as CVJ boots, steering gear boots, shock‑absorber boots, air‑bag & covers, door‑lock assemblies, pipe plugs, etc.

Electrical‑Electronic Products: For example, elastic electrical‑appliance keys, cordless‑phone antenna housings, cable sheaths, etc.

Industrial & Consumer Goods: Applied for elevator slide rails, noise‑reducing gears (radio‑cassette recorders, quartz clocks), high‑pressure gaskets, seals and other parts.

Sports & Other Fields: Ski bindings, ski‑boot straps, roller‑skate wheels, shoe soles, shoe heels, etc.

Physical Properties

Property Category	Test Item	Test Condition	Test Standard	Test Data	Unit
Basic Properties	Specific Gravity / Density	—	ASTM D792	1.19	g/cm³
	Melt Flow Rate (MFR)	230°C / 2.16kg	ASTM D1238	28	g/10min
	Molding Shrinkage	—	ASTM D955	1.2	%
	Water Absorption	24hr, 23°C	ASTM D570	0.5	%
Mechanical Properties	Tensile Strength	Break	ASTM D412	33.3	MPa
	Flexural Modulus	—	ASTM D790	206	MPa
	Elongation at Break	Break	ASTM D412	650	%
	Tear Strength	—	ASTM D624	147	kN/m

Processing Technology

Process Step	Core Parameters / Recommendations
Material Pre‑treatment	TPEE shall be fully dried before processing. Recommended drying at 80120℃ for 68 hours to keep moisture content ≤0.1%.
Injection Molding	• Barrel temperature: Generally 180-230℃. Some references mention maximum up to 260℃; avoid thermal degradation. • Mold temperature: 20-50℃ is recommended. • Injection pressure: 60~100 MPa (approx. 600‑1000 bar). • Injection speed: Medium‑low injection speed. • Screw speed: Slow‑to‑medium speed is preferred.
Extrusion	Set processing temperature slightly above melting point, e.g. 200~250℃. Conventional gradient‑type screw is adopted, L/D ratio ≥24:1.

Note: All information above is for reference only!