pmma v826，阿科玛集团，压克力有机玻璃

 物性表：

Physical Properties	Metric	English	Comments
Specific Gravity	1.19 g/cc	1.19 g/cc	ASTM D792
Water Absorption	0.30 %	0.30 %	weight gain after 24 hr. immersion; ASTM D570
Linear Mold Shrinkage	0.0020 - 0.0060 cm/cm	0.0020 - 0.0060 in/in	ASTM D955
Melt Flow	3.7 g/10 min @Load 3.80 kg, Temperature 230 °C	3.7 g/10 min @Load 8.38 lb, Temperature 446 °F	ASTM D1238
Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	93	93	ASTM D785
Tensile Strength, Ultimate	70.3 MPa	10200 psi	ASTM D638
Tensile Modulus	3.10 GPa	450 ksi	ASTM D638
Flexural Strength	<= 103 MPa	<= 15000 psi	ASTM D790
Flexural Modulus	3.10 GPa	450 ksi	ASTM D790
Izod Impact, Notched	0.160 J/cm	0.300 ft-lb/in	ASTM D256
Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.187 W/m-K	1.30 BTU-in/hr-ft²-°F	ASTM C177
Deflection Temperature at 0.46 MPa (66 psi)	105 °C	221 °F	annealed; ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	102 °C	216 °F	annealed; ASTM D648
Vicat Softening Point	104 °C	219 °F	50°C/hr; 50N; ASTM D1525
	111 °C	232 °F	50°C/hr; 10N; ASTM D1525
Optical Properties	Metric	English	Comments
Refractive Index	1.49 @Temperature 22.8 °C	1.49 @Temperature 73.0 °F	ND; ASTM D542
Haze	<= 2.0 % @Thickness 3.17 mm	<= 2.0 % @Thickness 0.125 in	ASTM D1003
Transmission, Visible	92 % @Thickness 3.17 mm	92 % @Thickness 0.125 in	ASTM D1003

PMMA树脂是无毒环保的材料，可用于生产餐具，卫生洁具等，具有良好的化学稳定性、和耐候性。PMMA树脂在破碎时不易产生尖锐的碎片，美国、日本等国家和地区已在法律中作出强制性规定，中小学及幼儿园建筑用玻璃必须采用PMMA树脂。目前，全国各地加快了城市建设步伐，街头标志、广告灯箱和电话亭等大量出现，其中所用材料中有相当一部分是PMMA树脂。北京奥运工程的户外彩色建材也大量使用了绿色环保的PMMA树脂。