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Experimental Study of the Helianthus Annuus’ Pith Reusing

Author: FengZhiZuo
Tutor: ShangPing
School: Tianjin University of Science and Technology
Course: Environmental Engineering
Keywords: Sunflower marrow Phenol Liquefaction Phenolic Resin Cushioning Packaging Materials Absorbent resin
CLC: X712
Type: Master's thesis
Year: 2009
Downloads: 16
Quote: 0
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Abstract


In this paper, our timber resources are very scarce , especially in the Midwest supply and demand situation is particularly serious . Pointed out that the trend of plant resources is the study of plant resources utilization as fuel at the same time , began to shift the focus of research chemicals . As an alternative to wood , sunflower stalks its superior physical properties and plasticity characteristics become the preferred material instead of wood . Liquefaction of sunflower marrow is one of the main thesis , and liquefaction mechanism were elaborated . Mainly concentrated sulfuric acid and phosphoric acid respectively as catalyst under different conditions for liquefaction sunflower marrow . Research and analysis of temperature, liquid ratio ( phenol mass / sunflower pulp quality ) , catalyst type and amount of residue on the liquefaction rate of time and thus preferred the sunflower marrow liquefaction Best Recipe: phenol as a liquid agent , phosphoric acid as catalyst, temperature 150 ℃, catalyst 0.014mol / l, liquid ratio of 2:1 , and the structure of liquefied infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) analysis . Also studied in order to prepare liquefied phenol resin adhesive as a binder to the raw green sunflower marrow cushioning packaging materials testing processes discussed adding different amount of straw , different amounts of blowing agent and a binder the ratio of the different particle size of the buffer straw pulp packaging materials compressive strength and density. Thus cushioning packaging material choice optimized formulation : 13% -15 % straw dosage , the mass ratio of the blowing agent and the crosslinking agent is 40% -50 % , straw pulp particle diameter of 4mm. The paper also Sunflower marrow and acrylic (AA) and acrylamide (AM) graft copolymer obtained superabsorbent by four groups of single factor test selected the highest absorbency absorbent resin formulation : m total monomer (AA AM) / m straw = 7:1, m initiator / m straw = 0.04, m crosslinker / m straw = 0.008 , and the reaction temperature was 50 ℃. Determined by experiment found that the formulations aging rate , grafting yield , gel strength is superior to starch absorbent resin .

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > Processing and comprehensive utilization of agricultural waste > Agricultural and sideline
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