描述

每千克PMMA粉末/颗粒原料的PMMA价格

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

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Price Of PMMA Per Kg PMMA Powder/Pellet Raw Material

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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.

Price Of PMMA Per Kg PMMA Powder/Pellet Raw Material

Product Details

Price of PMMA Per Kg PMMA Powder/Pellet Raw Material

PMMA process characteristics:

1, polymethyl methacrylate contains polar side methyl, with obvious hygroscopicity, water absorption rate is generally 0.3%-0.4%, must be dried before molding, drying conditions are 80 °C -85 °C drying 4-5h.

2.Polymethyl methacrylate has obvious non-Newtonian fluid characteristics in the temperature range of molding and processing, and the melt viscosity decreases significantly with the increase of shear rate, and the melt viscosity is also sensitive to changes in temperature. Therefore, for the molding process of polymethyl methacrylate, increasing the molding pressure and temperature can significantly reduce the melt viscosity and obtain better fluidity.

3. The temperature at which polymethyl methacrylate begins to flow is about 160 °C, and the temperature at which it begins to decompose is higher than 270 °C, which has a wide processing temperature range.

4, polymethyl methacrylate melt viscosity is high, the cooling rate is faster, the product is easy to produce internal stress, so the process conditions control requirements are strict when molding, and the product also needs to be post-processed after molding.

5, polymethyl methacrylate is an amorphous polymer, shrinkage and its range of change are small, generally about 0.5%-0.8%, is conducive to molding out of plastic parts with higher dimensional accuracy.

6, polymethyl methacrylate cutting performance is very good, its profile can be easily machined to a variety of required sizes.

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