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Home > LCD & Touch Screen > Optical Grade PMMA Resin  
PMMA (Poly methyl methacrylate)

This thermoplastic and transparent plastic is commonly called acrylic glass or simply acrylic. PMMA is often used as an alternative to glass, and in competition with polycarbonate (PC). It is often preferred on account of its moderate properties, easy handling and processing, and low cost, but behaves in a brittle manner when loaded, especially under an impact force.PMMA is now also widely used in the electronic and LCD industry.


Welantech International is able to provide turn-key solutions for the production of PMMA!

产品牌号 (Product Specification)
物 性 ( Properties ) 试验方法
ASTM
条件 单位 MG820 MG845 MG888 MG515 MG555



比重 (Specific gravity) D792     1.19 1.19 1.19 1.19 1.19
全光透明率 (Total light transmittance) D1003 3mm % 93 93 93 93 93
折射率 (Refractive index) D542     1.49 1.49 1.49 1.49 1.49
雾度 (Haze) D1003 3mm % 0.3 0.3 0.3 0.3 0.3
吸水率 (Water absorption) D570 24hr   0.3 0.3 0.3 0.3 0.3


热变形温度 (Heat distortion temp.) D648   104 100 98 90 92
维卡软化点 (Vicat softenting temp.) D1525   118 114 110 94 99
熔融指数 (Melt flow index) D1238 230℃/
3.8kgs
g/10min 2.0 4.5 10 15 5.5



抗拉强度 (Tensile strength) D638 1A/5 kg/cm2 770 740 700 650 680
伸长率 (Elongation) D638 1A/5 % 6 6 5 5 5
抗挠强度 (Flexural strength) D790   kg/cm2 1,200 1,100 1,000 950 980
弯曲弹性率 (Flexural modulus) D790   kg/cm2 35,000 34,000 33,000 32,000 33,000
IZOD冲击强度 (Impact strength) D256   kg.cm/cm 1.6 1.6 1.6 1.6 1.6
洛氏硬度 (Rockwell hardness) D785 M Scale   105 101 100 90 92
异物 (Foreign material) 目视 50g (mm2) ≦0.05 ≦0.05 ≦0.05 ≦0.05 ≦0.05
  用途 (Application)       挤出板
手机面板
车灯罩
显示器导光板、镜片、镜头 手机及笔记型电脑导光板 家电、照明杂货 家电、照明镜片、手机导光板
 
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