The Synthetize And Research Of Molybdenum Modified Phenol Formaldehyde Resin

In this paper,the phenol and the formaldehyde was adopted to compose the thermoplasticresin under the catalyzer of the chlorhydric acid.Molybdenum and nanometer silicic acidanhydride were used to enhance the heat resistance of the phenol formaldehyde resin.theresearch contained in the experiment were:(1) the best technological conditions to synthesizethe phenol resin and the characterization measurement.(2) the preparation of the molybdenummodified phenol resin and the characterization measurement.(3) the preparation of thenanometer silicon dioxide modified phenol resin and the characterization measurement(4) thepreparation of the molybdenum and the nanometer silicon dioxide mixed modified phenolresin and the characterization.measurement.(5) the appliance of the modified phenol resin inthe grinder and characterization measurement.The conclusion could be gained from the experiment and the analysis.(1) the besttechnological conditions to synthesize the phenol resin was that the mole ratio of the phenoland the formaldehyde was1.2:1and the range of the pH was1.5~2.0adopting the steptemperature style (2) the best technological conditions to synthesize the molybdenummodified phenol resin based on the synthesis of the phenol resin by experiment was:themolybdenum was five percent and the the mole ratio of the phenol and the formaldehyde was1.2:1and the range of the pH was1.5~2.0adopting the step temperature style(3) the besttechnological conditions to synthesize the nanometer silicon dioxide modified phenol resinbased on the synthesis of the phenol resin by experiment was:the nanometer silicon dioxidewas one percent and the the mole ratio of the phenol and the formaldehyde was1.1:1and therange of the pH was1.5~2.0adopting the step temperature style(4) the best technologicalconditions to synthesize the molybdenum and the nanometer silicon dioxide mixed modifiedphenol resin based on the synthesis of the phenol resin by quadrature experiment was:themolybdenum was three percent and the nanometer silicon dioxide was five percent and the themole ratio of the phenol and the formaldehyde was1.1:1and the range of the pH was1.5~2.0adopting the step temperature styleThe main indexes of the characterization of the phenol resin was measured by instrumentand operation.The thermal decomposition temperature and the weight loss ratio under certaintemperature were measured by TG analysis.The analysis of the molecular structure of the resin was taken by the IR spectrum.The dissociated phenol ratio,the fluidity,the gel time,thesoftening point and the dribbled temperature were also measured in the erperiment.Thecomparative analysis was adopted in the instrument.The application of the modified resin used in the grinder was researched simply.Themeasurement and the analysis of the mechanics property were completed too.The strength,gyrate strength and the erosion weight of the grinder made by the modified resin wereimproved obviously in the experiment.