Development of high performance of silane coupling agents by nano-technology.

牙科复合材料包含三种不同的相，即基质相、硅烷偶联相和填料相，它们的结构和力学性能主要影响相的相变和破坏行为。前些年我们建立了硅烷化前去污方法，增加了硅烷偶联剂在填料表面的吸附。本研究的目的是用维氏硬度法和热循环后的径向拉伸强度来测定经过硅烷化前的填料去污后得到的实验复合材料。径向拉伸强度的测量表明，经填料去污的复合材料的即时径向拉伸强度(43.1±4.2 Mpa)与对照复合材料(40.9±6.2 Mpa)没有显著差异(p&lt；0.05)。然而，热循环10,000次后，实验复合材料的径向拉伸强度为38.5±4.2 Mpa，显著高于热循环对照材料的28.8±4.0 Mpa。这种预硅烷化去污方法直接改善了复合材料的物理力学性能，这是因为改善了填料-基质的偶联，并使其具有更强的耐水解性。

Dental composite contains three different phases, matrix, silane coupling and filler, Their structures and mechanical properties of each phase mainly have an impact on transformation and destructive behavior. We have established pre-silanization decontamination method at previous year that increased adsorption of silane coupling agent on filler surface. The aim of this study is to determine experimental composites produced following pre-silanization decontamination of filler using a Vickers hardness method and a diametral tensile strength after thermo-cycling.Measurement of the diametral tensile strength revealed that the immediate (no thermo-cycling) diametral tensile strength of the filler-decontaminated composite (43.1 ± 4.2 MPa) was not significantly different (p<0.05) from that of the control composite (40.9 ± 6.2 MPa). However, thermo-cycling for 10,000 cycles resulted in diametral tensile strength of 38.5 ± 4.2 MPa for the experimental composite, which were significantly higher than those of the thermo-cycled control material, being 28.8 ± 4.0 MPa.This presilanization decontamination methodology improved directly the physico-mechanical properties of composites thanks to improved and more hydrolysis-resistant filler-matrix coupling.