PMMA 21 耐刮伤可以用在任何级别的树脂混合，表面硬度高_产品资讯

苯领NAS®21丙烯酸共聚物

类别：聚合物；热塑性塑料；丙烯酸（有机玻璃）

特点：闪闪发光，耐刮伤可以用在任何级别的树脂混合,，表面硬度高，热变形温度等。

苯乙烯加工优势，γ和环氧乙烷灭，符合USP XXIII规格VI类塑料

应用：电器，采购点显示，医疗器械，玩具，办公用品。

物性表：

Physical Properties	Metric	English	Comments

Specific Gravity	1.08 g/cc	1.08 g/cc	ASTM D792
Water Absorption	0.10 %	0.10 %	24 hr.; ASTM D570
Linear Mold Shrinkage	0.0020 - 0.0060 cm/cm	0.0020 - 0.0060 in/in	ASTM D955
Melt Flow	1.9 g/10 min @Load 5.00 kg, Temperature 200 °C	1.9 g/10 min @Load 11.0 lb, Temperature 392 °F	ASTM D1238
	6.2 g/10 min @Load 3.80 kg, Temperature 230 °C	6.2 g/10 min @Load 8.38 lb, Temperature 446 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	70	70	ASTM D785
Tensile Strength, Ultimate	58.0 MPa	8410 psi	ASTM D638
Elongation at Break	2.1 %	2.1 %	ASTM D638
Tensile Modulus	3.24 GPa	470 ksi	ASTM D638
Flexural Strength	97.0 MPa	14100 psi	ASTM D790
Flexural Modulus	3.10 GPa	450 ksi	ASTM D790
Izod Impact, Notched	0.200 J/cm	0.375 ft-lb/in	ASTM D256

Thermal Properties	Metric	English	Comments
Deflection Temperature at 1.8 MPa (264 psi)	94.0 °C	201 °F	ASTM D648
Vicat Softening Point	106 °C	223 °F	ASTM D1525
Flammability, UL94	HB @Thickness 1.50 mm	HB @Thickness 0.0591 in	all colors

Optical Properties	Metric	English	Comments
Refractive Index	1.57	1.57	ASTM D542
Haze	0.30 %	0.30 %	ASTM D1003
Transmission, Visible	91.3 %	91.3 %	ASTM D1003

Processing Properties	Metric	English	Comments
Processing Temperature	<= 260 °C	<= 500 °F
Rear Barrel Temperature	182 - 216 °C	360 - 421 °F
Middle Barrel Temperature	199 - 232 °C	390 - 450 °F
Front Barrel Temperature	210 - 243 °C	410 - 469 °F
Melt Temperature	210 - 243 °C	410 - 469 °F
Mold Temperature	32.0 - 60.0 °C	89.6 - 140 °F

Descriptive Properties
Back Pressure	Moderate
Injection Speed	slow-moderate	Typically moderate
Pre-Dry Requirements	2 hrs. at 82°C

图：

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