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Properties of Inorganic Adhesives according to Phosphate Type and Borax Ratio

인산염 종류와 붕사 첨가율에 따른 무기접착재의 특성

Song, Ha-Young;Lim, Jeong-Jun;Khil, Bae-Su;Lee, Sang-Soo
송하영;임정준;길배수;이상수

  • Received : 2019.01.21
  • Accepted : 2019.06.05
  • Published : 2019.08.20

Abstract

Epoxy resin adhesives are currently used as adhesives in buildings. Epoxy resin adhesives, which are organic materials, generate harmful substances when producing adhesives, and toxic substances are high in the residential space after installation. In addition, a large amount of carbon monoxide generated from organic materials in the case of a building fire leads to personal injury. This study evaluates the feasibility of inorganic adhesives using pure inorganic materials such as magnesia, phosphate, and borax as inorganic adhesives to replace existing organic adhesives. As a result of the experiment on the selection of adequate phosphate and the characteristics of the addition rate of borax used as a retarder, the potassium phosphate monobasic was obtained as a suitable phosphate and the characteristics according to the borax addition rate were compared with the quality standard of KS F 4923 The hardening shrinkage and heat change rate satisfied the quality standards. The tensile strength was satisfactory when the borax addition rate was 4% or more, but the adhesive strength did not meet the quality standards. Further studies are needed to improve adhesion strength.

Keywords

epoxy resin adhesives;inorganic adhesives;phosphate;magnesia oxide;borax

Acknowledgement

Supported by : Hanbat National University