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    Location:Leader plastic plate _PVC board _PVC board _PVC plastic _PP plastic board _PP board - Baoding Hongyuan Plastic Industry Co., Chinese plastics industry >> News >> Industry News >> 浏览文章


     

    Talk PP rods

     

    Date:2014年03月31日 Source:本站原创 Browse:

     

    With the rapid development of economy, technology, smart people more powerful, more play, in all walks of life are a lot of new material , then pp bar is also a good application of a wide range of materials. So what is pp stick it?


    PP stick is a semi- crystalline materials . It is harder than PE and has a higher melting point. Since the type of PP homopolymer high pressure when the temperature above 0 ℃ very brittle, so many commercial PP material is added 1-4% ethylene random copolymer or a higher ratio of clamp-stage copolymer of ethylene content .


    Colors are mostly white and gray. PP stick is a polymer, a propylene monomer CH2 = CH-CH3, polypropylene obtained by the polyaddition reaction , can be expressed as the formula (C3H6) n, the structure can be represented as [ -CH2-CH (CH3) - ] n.


    PP copolymer-based material has a lower heat distortion temperature (100 ℃), low transparency, low gloss , low rigidity, but have a stronger impact strength. PP intensity with increasing ethylene content increases. The Vicat softening temperature of PP is 150 ℃. Due to the high degree of crystallinity , surface stiffness and scratch resistance of this material is very good. PP environmental stress cracking problem does not exist .


    Which is characterized by low -density , heat , deformation, high stiffness, high surface strength , good chemical stability , excellent electrical performance, non-toxic , uniform color, smooth surface , easy installation and maintenance , long service life , easy machining , welding firm characteristics.

     

     

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