描述
Pmma改性塑料
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
Pmma改性塑料
产品详细信息
pmma改性塑料
电气性能
由于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。甲基酯
该基团的极性不太大,聚甲基丙烯酸甲酯仍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
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,表面不会出现碳化导电路径和电弧
跟踪现象。20C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℃时,侧链甲酯基处于冻结状态
当温度高于20℃时,材料的电性能将得到改善
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Pmma Modified Plastic
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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.
Pmma Modified Plastic
Product Details
pmma modified plastic
Electrical properties
Since polymethyl methacrylate contains polar methyl ester groups in the side of the main chain, its electrical properties are not as good as those of non-polar plastics such as polyolefin and polystyrene. Methyl ester
The polarity of the group is not too large, and polymethyl methacrylate still has good dielectric and electrical insulation properties. It’s worth pointing out that polymethylmethacrylate
Ester and even the entire acrylic plastic have excellent arc resistance. Under the action of arc, there will be no carbonized conductive path and arc on the surface.
Tracking phenomenon. 20C is a secondary transition temperature, which corresponds to the temperature at which the pendant methyl ester group starts to move. Below 20C, the pendant methyl ester group is in a frozen state.
When the temperature is above 20C, the electrical properties of the material will be improved.
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