Synthesis and application of water resistance and endurance silane coupling agents

耐水耐久硅烷偶联剂的合成及应用

基本信息

批准号：
13470406
负责人：
TERANAKA Toshio
金额：
$ 9.34万
依托单位：
Kanagawa Dental College
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13470406/
关键词：
surface modification silane coupling agent coupling-layer hydrolysis adhesion water resistance resin composite ceramics

项目摘要

The cause of deterioration of the mechanical properties of composites is attributed to the hydrolysis of the silane-coupling layer between the inorganic silica filler, and the organic base resin. In order to improve the endurance of dental composites against hydrolysis, we have synthesized and studied silane coupling agents.Seven experimental composites were prepared, containing fillers, which were modified with either 3-methacryloyloxypropyltrimethoxysilane (3-MPS) or a mixture of 3-MPS and the hydrophobic fluoroalkyltrimethoxysilanes. They were subjected to water immersion for 1,800 days and the Thermal Cycling Test for 30,000 cycles. The composite specimen containing filler modified with a mixture of 3-MPS and methacryloyloxypropyltrimethoxysilane showed no significant on tensile strength. In contrast -MPS modified filler containing composite demonstrated significant decrease after water immersion period and thermal stress.To improve further water resistance of the polysiloxane laye … More r at the silica/resin interface, a mixture of 3-MPS and novel silane coupling agents (MAnbF, n=5,7,9,1) with a hydrophobic fluoroalkyl and methaclyloyl group (i. e. 3{[1'-(perfluoro-5-mathylhexy) methyl-2'-(methacryloyloxy9] ethoxy }propil-trimethoxysilane (MA7bF))were synthesized. The concentration of each silane solution was adjusted with ethanol at 2 mass%, at various weight ratios of MAnbF 10, 20, 30, 50, 70 and 100% to 3-MPS. The tensile bond strength of the resin composites were measured, as well the contact angles of resin monomer mixture to glass plates modified with each silane. MA5bF formed a coupling layer with high bond strength and high water resistance at the silica/resin interface in all concentrations studied. MA7bF, MA9bF and MA11bF formed these layers at concentrations within 10-30%.From the results obtained in this study, it was suggested that the surface modification of the silica with a MA5bF or a mixture of 3-MPS and nonafluorohexyltrimethoxysilane increase the water endurance of resin composite. Less

确定组合物的机械性能的原因归因于无机硅烷填充剂和有机碱树脂之间的硅烷偶联层的水解。为了改善牙齿组成对水解的耐力，我们已经合成和研究了硅烷耦合剂。制备了七种实验组合物，其中包含填充剂，这些填充剂被3-甲基二甲基丙酰丙基丙氧甲基二甲氧基硅烷（3-mps）（3-mps）（3-mps）或3-mps和Hydrophobic librolobic librolobic libororyyltrim libororyyltrim libororirim clirorotlim compothery进行了修饰。他们被浸入水1,800天，并进行30,000个循环的热循环测试。包含3-MP和甲基丙烯氧基三甲氧基甲氧烷的混合物修饰的填充物的复合样品对拉伸强度没有显着性。相反，含有复合材料的改性填充剂在浸入水中和热应力后显着降低。为了提高多硅氧烷层的进一步耐水性……在硅/树脂界面上，更多的R r在3 -MPS和新型的硅烷偶联剂（MANBF）（n = 5,7,9,9,9,9,9,1）的混合物（i. i. sylophobic flyolopic fliorolallylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylylyly）（ 3 {[1' - （perfluoro-5-甲基二甲基） - （甲基丙酰氧基9]乙氧基乙氧基溶液}的浓度以2质量％的元素为100，30，30米测量了树脂组成的强度，以及用每种硅烷修改的树脂单体混合物的接触角，在所有浓度的MA7BF，MA7BF，MA7BF，MA7BF中均构成了这些分层的浓度。用MA5BF或3-MP的混合物和非氟己基三甲氧基硅烷对二氧化硅的表面修饰增加了树脂复合材料的水耐力。较少的