描述
PMMA的物理性质
PMMA塑料材料
优良的透明度和优异的耐老化性
PMMA具有重量轻、成本低、易于成型的优点
聚甲基丙烯酸甲酯的物理性能
聚甲基丙烯酸甲酯的物理性质聚甲基丙烯酸甲酯主链侧含有极性甲酯基团,其电气性能不如聚烯烃和聚苯乙烯等非极性塑料聚甲基丙烯酸甲酯的物理性能,甲酯基的极性不是太大,聚甲基丙烯酸甲酯仍然具有良好的介电和电绝缘性能。值得指出的是,聚甲基丙烯酸甲酯甚至整个丙烯酸塑料都具有优异的耐电弧性能。在电弧的作用下,表面不会产生碳化的导电路径和电弧轨迹。20°C是二次转变温度,对应于侧链甲酯基开始移动的温度。低于20°C时,侧链甲酯基团处于冻结状态,与高于20°C的相比,材料的电性能将得到改善。
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Physical Properties Of PMMA
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PMMA Plastic Material
Excellent transparency and outstanding aging resistance
PMMA has the advantages of light weight, low cost and easy molding.
Physical Properties Of PMMA
Product Details
Physical properties of PMMA
Polymethyl methacrylate contains polar methyl ester groups at the side of the main chain, and its electrical properties are not as good as non-polar plastics such as polyolefin and polystyrene.
Physical properties of PMMA,The polarity of the methyl ester group is not too great, and polymethyl methacrylate still has good dielectric and electrical insulation properties. It is worth pointing out that polymethyl methacrylate and even the entire acrylic plastics have excellent arc resistance. Under the action of an arc, the surface will not produce carbonized conductive paths and arc tracks. 20°C is a secondary transition temperature, which corresponds to the temperature at which the pendant methyl ester groups begin to move. Below 20°C, the pendant methyl ester groups are in a frozen state, and the electrical properties of the material will be improved compared to those above 20°C.
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