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Savotchenko S, Kovaleva E, Cherniakov A. Effect of epoxy resin modifications with industrial fillers on wetting and water absorption. Colloid Polym Sci 2023. [DOI: 10.1007/s00396-023-05061-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Savotchenko S, Kovaleva E. Experimental study of the influence of the epoxy resin modification with additives on the contact angle. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2023. [DOI: 10.1080/1023666x.2022.2164826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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The resistance of repair epoxy composites modified with silicon-containing additives and mineral fillers. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04471-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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The improvement of mechanical properties of repair and construction compositions based on epoxy resin with mineral fillers. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03138-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Preparation of hexamethylol melamine resin with low crystallization water and low viscosity for hexamethylol melamine/polyvinyl alcohol composite membrane. POLISH JOURNAL OF CHEMICAL TECHNOLOGY 2022. [DOI: 10.2478/pjct-2022-0007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract
Hexamethylol melamine resins (HMM) with low crystallization water content and low viscosity were prepared by inhibiting the condensation polymerization of low hexamethylol melamine. The effects of catalyst, pH, formalde-hyde/melamine ratio, reaction temperature and time on the synthesis parameters of HMM were investigated. The results showed that the sample (HMM8) synthesized with Na2CO3-NaHCO3 as catalyst had the crystallization water content lower than 10%, being with a viscosity of about 0.26 Pa·s. The melting temperature of HMM8/polyvinyl alcohol (PVA) curing system was about 164.3 °C. It was found that the higher the amount of formaldehyde, the greater the hydroxyl methyl bounded to each triazine ring. Compared with the traditional melamine formaldehyde resin which had the crystallization water content of about 20–30%, the production of this resin was expected to reduce the energy consumption of industrial reaction, while the resin with 10% crystallization water content was more conducive to the development of alloying HMM/PVA composite membrane.
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