Dissertation > Excellent graduate degree dissertation topics show

Formulation and Its Technics for Preparing the Suspoemulsion of Metaflumizone and Triazophos Mixture

Author: WangZuo
Tutor: ZhuGuoNian; WeiFangLin
School: Zhejiang University
Course: Plant Protection
Keywords: metaflumizone triazophos suspoemulsions formulation stability
CLC: TQ453.24
Type: Master's thesis
Year: 2012
Downloads: 2
Quote: 0
Read: Download Dissertation

Abstract


The30%metaflumizone-triazophos SE and its detection method were established. The30%metaflumizone·triazophos SE samples were prepared by three processing technologies, according to the formulation of pre-screened SC and EW. The results showed that the SE samples which were prepared by direct sanding method show a higher demixing of water, poor pourability and instability. Pourability and demixing of water of SE samples which prepared by mixing method and direct emulsification method were qualified. The SE samples had a better pourability and a lower demixing of water, which prepared by direct emulsification method using emulsifier of EL-60and PE6200.The other indicator measure results were qualified. The30%metaflumizone·triazophos SE detection method was studied, and the detection method was established in the same HPLC condition. The method was simple and had a good precision and accuracy.In the premise of the same formulation, SE samples which particle sizes were small were prepared by mixing method in low shear (1500rpm) for20minute or by direct emulsification method in2500rpm for30minute. The viscosity of SE prepared by direct sanding method is higher than the other methods, which cause the poor pourability. The demixing of water in RT and54℃were less than5%, indicating that the SE prepared by direct mixing method and direct emulsification method was qualified. While demixing of water in RT and54℃were greater than10%, indicating that the SE prepared by direct sanding method was unqualified. The suspensibility of SE prepared by direct emulsification method is highest followed by the method mixing, while the suspensibility of SE prepared by direct sanding method is lowest.The stability of SE prepared by three processing technologies was determined by turbiscan lab scanning. The results showed that the particle sizes of SE become larger rapidly and the syetem appears flocculation and coalescence phenomena. The particle sizes of SE prepared by mixing method did not change significantly, sediment and clarification were appeared. The particle sizes of SE prepared by direct emulsification method become slightly larger, bottom and top of the SE samples were relatively stable, showing a good stability.The influence of SC-3and NNO on the stability of SE was investigated. The results showed that dispersion and pourability of SE prepared by two types dispersant did not show a significant difference. Surface tension significantly reduced and zeta potential absolute value is higher in the SE system. The SE system prepared by NNO is instability. The influence of zeta potential and demixing of water of the SC, SE which were prepared by different dispersant types and amounts were further studied. The results showed that, with two kinds of dispersant increases, zeta potential absolute value of the same trends. The demixing of water in RT and54℃were slowly rising after falling.

Related Dissertations

  1. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  2. The Study on Structural Calculation and Analysis Method of Lattice-type Crane with Variable Cross-section Boom,TH21
  3. Power System Dynamic Voltage Stability Simulation Study Based on Precise Integration Method,TM712
  4. Research and Design for the Laser’s Power Control System of Laser Direct Writing,TN249
  5. Stability Analysis of Systems with Time Delays,TP13
  6. Astudy on Samuel Huntington’s Theory of Political Stability,D09
  7. Thermal Stability of Complexes of Chitosan Quaternary Ammonium Salt and Metal Ion,O634
  8. Breeding of High-Yield Pigment Production Monascus and Studies on Pigments’ Qualities,TS202.3
  9. On Ohba’s Conjecture of One Class of Complete Multipartite Graphs,O157.5
  10. Research on Anti-periodic Solutions of Delayed Cellular Neural Networks without Assuming Global Lipschitz Conditions,TP183
  11. Characterization and Properties of capsaicin / CD system,TQ450.1
  12. Preparation and Properties of lead-free glass powder,TQ171.6
  13. Worry Tendency of Young Students: Construct, Measurement and Characters Relationship,B841
  14. Preparation and Evaluation on the Toxicological Safety and Stability of Deer Blood Wine,TS262.91
  15. Evaluation on Stability of Threshing and Redrying Lamina Structure of Tobacco,TS443
  16. Generator Excitation System of the Anti-saturation Control,TM301.2
  17. Differeces in Physical and Chemical Properties and Organic Carbon Stability of Black Soil between Cropping Systems in Northeast China,S153
  18. Effects of Continous Super Rice Planting on Contrnt of Organic Carbon and Aggregates Stability in Paddr Soils,S511
  19. Self-reported Psychosomatic Pathological Status among Adolescent Students: a School-based Cohort Study,B844.2
  20. Study on Attention Characteristcs of Chinese Paralympic Table Tennis Players,G846
  21. Effects of Processing Conditions and Frozen on Emulsifying Properties of Pork Myofibrillar Proteins,TS251.1

CLC: > Industrial Technology > Chemical Industry > Pesticide Industry > Pesticides > Organic pesticides > Organic fluorine class
© 2012 www.DissertationTopic.Net  Mobile