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5. ENHANCING THE FLAME RESISTANCE PROPERTIES OF KRAFT PAPERS USED AS ARCHIVE-STORAGE MATERIALS WITH SOME MCC/CMC-REINFORCED CHEMICALS.

Author

Ustaomer, Derya and Kalyoncu, Evren Ersoy

Subjects
KRAFT paper, LIGNINS, CARBOXYMETHYLCELLULOSE, TANNINS, BORAX
Abstract

As it is known, the low flame resistance is one of the negative characteristic features of Kraft papers which find a wide usage area. This feature needs to be improved especially in paper types that will be used for archival-storage and protection purposes. The aim of this study was to increase the flame resistance of Kraft-based paper materials (envelope, box, etc.) to be used for the purpose of storage-archive. In this study, MCC (microcrystalline cellulose) / CMC (carboxymethyl cellulose) reinforced lignin, tannin and borax were used. The immersion method was chosen for the application of chemicals. Limited oxygen index levels (LOI) and UL-94 flammability tests were performed on the treated papers to determine their burning characteristics and flame resistance properties. As a result of this study, it was seen that the chemicals applied to the kraft papers by immersion method improved the fire resistance properties and also positive results have been obtained especially with MCC/CMC reinforcement. [ABSTRACT FROM AUTHOR]

Published
2023

9. THE EFFECTS OF BORON COMPOUNDS AND DIFFERENT MELAMINE CONTENTS IN MUF RESINS ON SOME PROPERTIES OF MDF PANELS.

Author

Ustaomer, Derya and Usta, Mustafa

Subjects
*BORON compounds, *MELAMINE, *GUMS & resins, *FIBERBOARD, *THICKNESS measurement, *MECHANICAL properties of metals, *FORMALDEHYDE
Abstract

The objective of this study was to determine the effects of some boron compounds, which have fire retardant properties, as well as melamine-urea-formaldehyde (MUF) resins having different melamine contents (10%, 15%, and 20%) on some physical and mechanical properties of medium density fiberboard (MDF) panels. It was found that the water absorption (WA) and thickness swelling (TS) of MDF panels increased depending on types and concentrations of boron compounds. However, the WA and TS values of MDF panels decreased with increasing melamine content in MUF resins. It was also found that the modulus of rupture (MOR) and internal bond strength (IB) of MDF panels showed different trends depending on the experimental parameters. Boron compounds showed some negative effects on the MOR and IB values. However, these effects decreased with increasing melamine content in MUF resins. The best results were obtained in MDF panels manufactured with an MUF resin having 20% melamine content. Consequently, increasing melamine content in MUF resins showed positive effects on some properties of MDF panels. [ABSTRACT FROM AUTHOR]

Published
2012

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