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Exploitation of Materials of Polypropylene Pipe Joints for Water-saving Irrigation

Author: LeiJunQing
Tutor: LiYongHong；ZhouHao
School: Tianjin University
Course: Chemical Engineering
Keywords: Polypropylene Nucleating agent Water-saving irrigation fittings Compound
CLC: TQ325.14
Type: Master's thesis
Year: 2009
Downloads: 25
Quote: 0
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Abstract


Polypropylene has excellent mechanical properties , stress cracking resistance , rigidity and high melting point , is the lowest density of all the resin varieties , is one of the main sources of water-saving irrigation fittings . Polypropylene water-saving irrigation pipe production of the injection molding process . Dushanzi polypropylene plant introduction Haymont (Himont) Spheripol process to produce homopolymer , random , block a variety of grades of polypropylene . Dushanzi of this thesis, the main objective is the production of polypropylene resin based resin into nuclear modification technology developed for the use of water-saving irrigation fittings Polypropylene Compound . In this thesis modified polypropylene nucleating agent in polypropylene comments and through cooperation with the water-saving irrigation products manufacturer , technology and product characteristics of the combined the Dushanzi company polypropylene device develop indicators of water-saving irrigation technology special material polypropylene fittings . Of this R \u0026 D Directions for to using the Dushanzi polypropylene means the production of block polypropylene base resin by nucleation modified , adding an appropriate amount of a nucleating agent in the polypropylene powder , extrusion granulation , to produce a polypropylene Compound of water-saving irrigation . Papers according to the characteristics of water-saving irrigation fittings , combined with the previous experiment , after extensive exchanges with water-saving irrigation products manufacturer , to develop a water-saving irrigation special material developed technical indicators ; basis , the choice of a special material technical indicators Dushanzi the polypropylene unit production of the two block copolymer polypropylene resin , , screened through experiments suitable block copolymer as a base resin a polypropylene resin ; selected six different types of nucleating agents , and screened out of the polypropylene resin according to different the proportion of blending, extrusion granulation , sample preparation , and to test their mechanical properties ; through evaluation, to select a suitable nucleating agent to draw preliminary added in an amount , by contrast with the imported materials . In order to reduce costs through collaborative experiment with the other two into a nucleating agent obtained the optimal solution , laboratory formulation through scale-up and application experiments , the development of water-saving irrigation for downstream users polypropylene fittings Compound.

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CLC: > Industrial Technology > Chemical Industry > Synthetic resins and plastics industry > Polymer resin and plastic > Polyolefin plastic > Polypropylene
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