A Mechanics Function Study Of Different In Ratio Of Quality And Manner Of Assemble On Namijituo Compound Resin

Objective:The tradition artificial tooth Jituo material have fine biology function,good colour,process easily ,but it has some defects ,for example, tenacity is insufficient,hardness is not big,easy broke .In order to solve the PMMA base resin which has the defects,The experiment adds unlike proportion CaCO3 nanometer into the PMMA to strengthen its bending resistance , resist to break nature up , and use low temperature in bath water to get together, Thereby, avoid frequent tepid bath aggregation method , wait for a problem but produce air bubble since litre of temperature is too quick, to strengthen it`s mechanics function. determine PMMA of the polymerization hot strength , bending strength , rockwell hardness , brinell hardness.and use Scan an electricity mirror to observe CaCO3 nanometer dispersing in PMMA condition to find come to make artificial tooth Jituo right proportion.Method:一,The examination fabricationAdd CaCO3 nanometer into the PMMA,Part for making 0%,1%,2%,3% thickness nano-compesite resin PMMA/CaCO3.which go by the normal atmospheric temperature and low temperature in water bath to assemble .By this way to make 40 test pieces and divide them into 8 groups,Then to compare with the function of dynamics each group.and use Scan an electricity mirror to observe.二,The examination testing1,With omnipotent material of electron, experiment machine measures every group of 5 examination hot strength , bending strength。 2,Use Rockwell hardness machine to measure every group of 5 examination Rockwell hardness。3,Use Brinell hardness machine to measure every group of 5 examination Brinell hardness。三,Scan an electricity mirror to observeUse Scan an electricity mirror to observe CaCO3 nanometer pellet and their various element hits the target in PMMA dispersing condition. The addition proportion ascertaining that one kind of CaCO3 accepting the ground rice body is righter.Results:1,There has remarkable differce in adding the thickness of CaCO3 in the given degree,which raise PMMA/CaCO3 on the function of dynamics (P<0.05), 3%'s CaCO3 nanometer pellet Mechanics function is the strongest.2,There has remarkable differce in the function of dynamics between the common resin of base PMMA and nano-compesite resin PMMA/CaCO3 get together course the same kind of method(P<0.05)。3,There has remarkable difference in the function of dynamics between the normal atmospheric temperature and low temperature in water bath to assemble on the same degree nano-compesite resin PMMA/CaCO3 (P<0.05),The low temperature water bath aggregation method Mechanics function is the strongest4,Be unlike the mass ratio PMMA/CaCO3 nanometer compound material Various nanometer material element of CaCO3 disperse homogeneously in PMMA by mechanical rabble law。Because 3%'s CaCO3 nanometer pellet Mechanics function is the strongest, so nano-compesite resin PMMA/CaCO3 of 3%'s CaCO3 /PMMA mass ratio is fit to be artificial tooth Jituo material.Conclusion:1,TO add CaCO3 nanometer into the PMMA can raise the function of dynamics on PMMA.2,Subsequently increaseing by the thickness of CaCO3 in the given degree get together course the same kind of method ,which raises PMMA/CaCO3 on the function of dynamics. 3%'s CaCO3 nanometer pellet Mechanics function is the strongest.3,The low temperature in water bath to assemble is superior to the normal atmospheric temperature to assemble on the same degree nano-compesite resin on the function of dynamics.4,Be unlike the mass ratio PMMA/CaCO3 nanometer compound material Various nanometer material element of CaCO3 disperse homogeneously in PMMA by mechanical rabble law ,and nano-compesite resin PMMA/CaCO3 of 3%'s CaCO3 /PMMA mass ratio is fit to be artificial tooth Jituo material.