Peutzfeldt A, Asmussen E
Department of Dental Materials, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, Denmark.
Acta Odontol Scand. 1992 Aug;50(4):253-8. doi: 10.3109/00016359209012770.
To optimize the improvements by diketones of the mechanical properties of resin composites, diacetyl was added to two different monomer mixtures in different quantities. There was a positive correlation between content of diacetyl and tensile strength, flexural strength, and modulus of elasticity, respectively, of both the BISGMA/TEGDMA- and the UEDMA/HEMA-based materials. Addition of diacetyl did not influence the modulus of resilience significantly. Addition of diacetyl resulted in increases in mechanical properties which were of the same relative size for BISGMA/TEGMA-based materials as for UEDMA/HEMA-based materials. However, because of higher control values, except for modulus of elasticity, the properties of UEDMA/HEMA-based composites were superior to those of the BIGSMA/TEGDMA-based materials. A content of approximately 24 mole% diacetyl seemed to have optimum effect on mechanical properties, giving a mean increase of 25% in tensile strength, flexural strength, and modulus of elasticity.
为优化二酮对树脂复合材料机械性能的改善效果，将二乙酰以不同量添加到两种不同的单体混合物中。在基于双酚A缩水甘油醚/三乙二醇二甲基丙烯酸酯（BISGMA/TEGDMA）和基于甲基丙烯酸羟乙酯/甲基丙烯酸-2-羟乙酯（UEDMA/HEMA）的材料中，二乙酰含量分别与拉伸强度、弯曲强度和弹性模量呈正相关。添加二乙酰对回弹模量没有显著影响。添加二乙酰使基于BISGMA/TEGMA的材料和基于UEDMA/HEMA的材料的机械性能提高幅度相当。然而，由于对照值较高，除弹性模量外，基于UEDMA/HEMA的复合材料的性能优于基于双酚A缩水甘油醚/三乙二醇二甲基丙烯酸酯（BIGSMA/TEGDMA）的材料。约24摩尔%的二乙酰含量似乎对机械性能有最佳效果，使拉伸强度、弯曲强度和弹性模量平均提高25%。
