What is PP? AND APPLICATION OF PP

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What is PP? AND APPLICATION OF PP

03-04-2016

What is PP?
PP stands for Polypropylene is a polymer is produced by polymerization of propylene.
Chemical nomenclature: poly (1-methylethylene)
Other names: + Polypropylene; Polypropene;
+ Polipropene 25 [Usan]; Propene polymers;
+ Propylene polymers; 1-Propene homopolymer
Properties of PP
Molecular formula: (C3H6) x
Gravity: PP amorphous: 0.85 g / cm3
PP crystals: 0.95 g / cm3
Elongation: 250-700%
Tensile strength: 30-40 N / mm2
Impact property: 3:28 - 5.9 kJ / m2
Melting point: ~ 165 ° C
Characteristics of the PP
High mechanical durability (resistance to tear and tensile), relatively rigid, inflexible as PE, no stretching long thus made into fibers. Special abilities easily torn when there is a cut or a small puncture wound.
Transparent, high-gloss surface for enhanced printing capabilities, in clear strokes.
PP, colorless, tasteless, non doc.Hat PP with flame burning bright pale blue, plastic flow, smell rubber burning smell similar.
Resistant to temperatures higher than 100 ° C. However temperature solder paste eyelid (body) PP (140 °), higher than PE - flow can cause structural damage to the membrane transplantation outside, so are less likely to use PP layers of waterproofing properties cung.Co O2, steam, oil and other gases.
PP 330F
PP applications.
Packing a layer containing food preservatives, antioxidants do not require a rigorous way.
Forming fibers, woven into food containers, bulk grain.
PP also produce coatings for membranes laminated to increase membrane permeability gas, steam, enabling higher printing, and easy to tear open the packaging (made available due to a cut) and create high gloss for packaging.