Computer Case; Keyboard Material; High Performance Keyboard; Luminescent

• Transport Package: Bags
• Specification: 25Kg
• Trademark: WANHUA
• Origin: China
• Model NO.: PC-20
• Production Capacity: 3000 Tons/Year

Product Description

Product Features

Performance	Test Criteria	Test Conditions	Units	Results
physical properties
Melt index	ASTM D1238	300ºC/1.2Kg	g/10min	9
Mold shrinkage	ASTM D1238	-	%	0.5-0.7
water absorption	ASTM D1238	23ºC,24h	%	0.2
density	ASTM D1238	-	g/cm³	1.2
Mechanical behavior
Tensile Strength	ASTM D1238	50mm/min	MPa	72

Tensile modulus	ASTM D1238	50mm/min	MPa	2300
Yield stress	ASTM D1238	50mm/min	MPa	65
yield strain	ASTM D1238	50mm/min	%	6
Elongation at break	ASTM D1238	50mm/min	%	120
Flexural strength	ASTM D1238	50mm/min	MPa	97
flexural modulus	ASTM D1238	50mm/min	MPa	2300
notched Izod impact strength	ASTM D1238	23ºC	KJ/m²	80
Thermal performance

Heat distortion temperature	ASTM D1238	1.82MPa;3.2mm	ºC	130
Vicat softening point	ASTM D1238	120ºC/h;50N	ºC	150
Optical properties
Haze	ASTM D1238	3mm	%	<0.8
transmittance	ASTM D1238	3mm	%	89
refractive index	ASTM D1238	-	-	1.586

Polycarbonate (PC) is a colorless, transparent, glassy amorphous polymer with excellent optical properties. PC high molecular
resin has high toughness, cantilever beam notched impact strength is 600~900J/m. The unfilled grade has a heat distortion
temperature of about 130 °C, which can be increased by 10 °C after it is reinforced with glass fiber. The flexural modulus of PC
can reach more than 2400 MPa, so it can be processed into a large rigid product. Below 100 ° C, the creep rate under load is very
low. PC is poor in hydrolysis resistance and cannot be used to repeatedly process articles subjected to high pressure steam.