PEI 2400-7301 PEI 2400-7301

<*n>PEI<*n> 2400-7301

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Polypropylene has good heat resistance, and products can be sterilized at temperatures above 100 degrees C, without external force, and no deformation at 150. The embrittlement temperature is -35 C, and the brittleness will occur at lower than -35 C, and the cold resistance is not as good as that of polyethylene. For polypropylene glass transition temperature values reported a 18qC, 0qC, 5 DEG C, th*because people with different samples, containing crystalline phase and amorphous phase of different proporti*o that the amorphou*rt caused by the different chain length of molecular chain. The melting temperature of polypropylene increased by 40 than 50% about approximately 164 polyethylene, 170 C, 100% isotactic polypropylene melting poi*f 176 DEG C.

chemical stability

The chemical stability of PP is very good, in additio*being concentrated sulfuric acid and concentrated nitric acid erosion, are relatively stable for other kinds of chemical reagents, but low molecular weight aliphatic hydrocarb*, aromatic hydrocarb* and chlorinated hydrocarb* can make polypropylene softening and swelling, while its chemical stability with the increase of crystallinity is increased, so polypropylene is suitable for producing various chemical pipes and fittings, good anticorrosion effect.