Synthesis and cure kinetics of liquefied wood/phenol/formaldehyde resins
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چکیده
منابع مشابه
Synthesis and Cure Kinetics of Liquefied Wood/Phenol/ Formaldehyde Resins
Wood liquefaction was conducted at a 2/1 phenol/wood ratio in two different reactors: (1) an atmospheric three-necked flask reactor and (2) a sealed Parr reactor. The liquefied wood mixture (liquefied wood, unreacted phenol, and wood residue) was further condensed with formaldehyde under acidic conditions to synthesize two novolac-type liquefied wood/phenol/formaldehyde (LWPF) resins: LWPF1 (th...
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1,2,3‐Tris(4‐cyanatophenyl)propane, a new tricyanate ester monomer analogous to cyanated novolac or “phenolic triazine (PT) resin” that features more flexible chemical linkages at the central branch point, was synthesized in nine steps with an overall yield of 26%. The highly purified monomer exhibited an activation energy of 110 kJ/mol for auto‐catalytic cure at temperatures of 210 °C ...
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The effect of wood flour on the cure kinetics of commercial phenol-formaldehyde resins used as oriented strandboard face and core adhesives was studied using differential scanning calorimetry. The wood flour did not change the cure mechanism of the face resin, but lowered its cure temperature and activation energy and increased its cure reaction order. For the core resin (CR), the wood flour lo...
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ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 2008
ISSN: 0021-8995,1097-4628
DOI: 10.1002/app.27756