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首页> 外文期刊>Journal of Applied Polymer Science >Effects of silane coupling agent hydrophobicity and loading method on water absorption and mechanical strength of silica particle-filled epoxy resin
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Effects of silane coupling agent hydrophobicity and loading method on water absorption and mechanical strength of silica particle-filled epoxy resin

机译：硅烷偶联剂疏水性和装载方法对二氧化硅颗粒颗粒颗粒环氧树脂吸水和机械强度的影响

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摘要

A suitable silane coupling agent (SCA) structure to improve the water absorption and mechanical strength of silica particle-filled epoxy resin was investigated. Bonding, hydrocarbon, and fluorocarbon type SCAs were employed. The bonding type has glycidoxy or amino groups that react with epoxy resin, whereas the other types have only hydrophobic chains. The spherical silica particles were added to epoxy resin at amounts from 10 to 50 wt %. The effect of water absorption was consequently lowered in the order of hydrocarbon > bonding types. The fluorocarbon type SCA was also effective at zero and low silica content. Modification of the epoxy phase by SCA addition was clarified to have a more dominant effect than the adhesion of silica/epoxy interface for the lowering of water absorption, whereas it had been conventionally considered that interfacial adhesion had a more dominant effect. The mechanical strength was higher for the bonding type than the other type. Two addition methods were compared, a pretreatment method and an integral blend method in which all components were mixed simultaneously. The integral blend method was determined to be superior to the pretreatment method for both water absorption and mechanical strength, which was also contrary to the conventional view. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48615.
机译：研究了提高二氧化硅颗粒填充的环氧树脂的吸水性和机械强度的合适的硅烷偶联剂（SCA）结构。采用粘合，烃和氟碳型SCA。粘合型具有与环氧树脂反应的糖氧基或氨基，而其他类型仅具有疏水链。将球形二氧化硅颗粒以10至50wt％的量加入到环氧树脂中。因此，以烃>粘合类型的顺序降低了吸水性的影响。氟碳型SCA在零和低二氧化硅含量下也是有效的。通过SCA添加的环氧相的改性被阐明以具有比二氧化硅/环氧界面在降低吸水率的粘附性更大的效果，而它通常认为界面粘附具有更大的效果。粘合型的机械强度高于其他类型。比较了两种加法方法，预处理方法和整体混合方法，其中所有组分同时混合。确定整体混合方法优于吸水性和机械强度的预处理方法，这也与常规视图相反。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,137,48615。

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