描述

原始PMMA回收PMMA树脂/聚甲基丙烯酸甲酯颗粒

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

未经处理的PMMA回收PMMA树脂/聚甲基丙烯酸甲酯颗粒

产品详细信息

未经处理的PMMA回收PMMA树脂/聚甲基丙烯酸甲酯颗粒

PMMA主要工艺特征包括：
①PMMA含有极性侧甲基，具有明显的吸湿性，吸水率一般为0.3~0.4，成型前必须干燥，干燥条件为80-85℃，干燥4-5小时。
②PMMA在成型过程的温度范围内具有明显的非牛顿流体特性，熔体粘度随剪切速率的增加而明显降低，熔体粘度对温度变化也很敏感。因此，对于PMMA成型，增加成型压力和温度可以显著降低熔体粘度并获得更好的流动性

温度③PMMA在160℃左右开始流动，开始分解的温度高于270℃，加工温度范围宽
④PMMA熔体粘度高，冷却速度快，产品容易产生内应力，因此工艺条件受到严格控制，塑料制品成型后也需要进行处理
⑤PMMA是一种无定形聚合物，收缩率及其变化范围小，一般在0.5~0.8之间，有利于高尺寸精度塑料件的成型
⑥PMMA的切割性能非常好，它的轮廓可以很容易地加工到各种要求的尺寸

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Virgin PMMA Recycled PMMA Resin / Polymethyl Methacrylate Granules

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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.

Virgin PMMA Recycled PMMA Resin / Polymethyl Methacrylate Granules

Product Details

Virgin PMMA Recycled PMMA Resin / Polymethyl Methacrylate Granules

PMMA main process characteristics include:
①PMMA contains polar side methyl, has obvious hygroscopicity, water absorption is generally 0.3~0.4, must be dried before molding, drying condition is 80-85℃ drying 4-5 h.
②PMMA has obvious non-Newtonian fluid characteristics in the temperature range of molding process, the melt viscosity will decrease obviously with the increase of shear rate, and the melt viscosity is also sensitive to the change of temperature. Therefore, for PMMA molding, increasing molding pressure and temperature can significantly reduce melt viscosity and achieve better fluidity.

The temperature at which the③PMMA begins to flow is about 160℃, and the temperature at which the decomposition begins is higher than 270℃, with a wide processing temperature range.
④PMMA melt viscosity is high, cooling rate is fast, the products are easy to produce internal stress, so the process conditions are strictly controlled, and the plastic products also need to be treated after forming.
⑤PMMA is an amorphous polymer, the shrinkage rate and its variation range are small, generally at 0.5~0.8, which is beneficial to the molding of plastic parts with high dimensional accuracy.
⑥PMMA cutting performance is very good, its profile can be easily machined to various required dimensions.

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