Alkyl ketene dimer
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In this study, the factors related to the veneer material and adhesive properties were fixed; however, working conditions and process parameters (impregnation, pre-drying, curing, gluing, hot press) could affect the performance of plywood. Therefore, the objective of this work is to investigate the influence of two different processes (with and without curing before gluing) on bonding quality of the treated beech plywood.
8p vilarry 01-04-2024 9 1 Download
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With Beech veneers being treated with 10% solid content of the chemicals from paper (Alkyl ketene dimer, AKD), wood (N-methylol melamine, NMM-1) and textile industry (fatty acid modified N-methylol melamine, mNMM-2), the results showed that the treatments with these chemicals considerably increased the water repellence effectiveness (WRE) of veneers in the initial submersion phases. In this paper, veneers treated with Nmethylol melamine and AKD chemicals were investigated on water/moisture related properties and their stability after cyclic tests.
12p vilarry 01-04-2024 1 1 Download
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This paper veneers treated with N-methylol melamine and AKD chemicals were investigated on water moisture related properties and their stability after cyclic tests.
12p 12120609 18-03-2020 11 1 Download
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This paper different parameters of hot press curing were applied on the impregnated veneers for testing of chemical fixation and water related properties.
10p 12120609 18-03-2020 15 1 Download
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Rotary cut Beech (Fagus sylvatica. L) veneers with dimension of 1.5 × 400 × 400 mm3 (rad × tang × long) were impregnated with three chemicals: N-methylol melamine (NMM-1 - 10% solid content), fatty acid modified N-methylol melamine/paraffin compound (mNMM-2 - 5% solid content), alkyl ketene dimer (AKD - 1% solid content).
8p visasuke2711 02-05-2019 10 1 Download
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There have been some problems reported associated with the use of alkyl ketene dimer (AKD) in alkali papermaking. Excessive use of size emulsion, poor size performance when filler used, problems with back water contamination, poor retention, and formation of pitch deposits on machinery are some of the problems experienced during papermaking operations.
8p aquaman27 15-01-2019 22 1 Download