Manufacture of A Measurement and Test System About Stability of Sizing Material Base on Fe₃O₄ Nanopartical Magnetic Fluid

The slurry is a dispersoid particle diameter from between coarse dispersed system and solutions of a class of liquid dispersion. This is a highly dispersed multiphase heterogeneous system ; both due to its internal solid particles have a liquid base fluid , and thus have many new physical mechanism and characteristics of the slurry are many new functional materials . So for slurry forefront of materials science research to become hot . Slurry , solid particle size, size distribution parameters and dispersion stability, which is the production of pulp , preparation and applications without an important part . Therefore slurry stability testing methods and testing techniques are an important aspect of the study slurry . Since many types of pulp , paper is based on research group to carry out joint research when : the nano- Fe3O4 magnetic fluid . The development test system , use of the LC oscillator frequency f of the circuit inductance L and capacitance C and the variation of the change , with electric , automatic control means , the first slurry was prepared for testing the stability of the test system ; exploiting weak external magnetic field induced oxidation preparation of Fe3O4 particles precipitated , and using a 0.5 % to 2 % of the silane coupling agent KH560 right of Fe3O4 particles coated modified and 1% to 4% of the mass fraction of the surfactant on the nano Fe3O4 particles Span80 # oil and 20 constitute the magnetic fluid dispersion ; final use of the self-made system that detects the above nano- Fe3O4 magnetic fluid , the stability of the results obtained . The main conclusions are as follows : ( 1 ) the use of LC oscillator frequency f of the circuit inductance L and capacitance C and the variation of the change obtained slurry used for the stability test system. ( 2 ) The test system can be a good characterization of nano- Fe3O4 magnetic fluid stability test results in line with expectations . (3) 1.5% KH560 3% Span80 combination of additives formulated with nano- Fe3O4 magnetic fluid compared to other concentration KH560 and Span80 Fe3O4 nanoparticles prepared magnetic fluid is more stable. In summary, the use of the LC oscillator frequency f of the circuit inductance L and capacitance C of the law of change , can be used as basis for evaluation of the slurry stability testing . 1.5% KH560 3% Span80 combination of additives can be prepared relatively stable nano- Fe3O4 magnetic fluid ; This also shows that the proposed ideas and methods may also become a test for the evaluation of the stability of the slurry as a solution.