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1. 

   Laboratory Technique for the Development and Evaluation of Moulded Resinous Composites

   Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.E. Ysbrandy --- Dept. of Wood Science, G. F.R. Gerischer --- Dept. of Wood Science, R.D. Sanderson --- , Republic of South Africa

   Two procedures of resin moulding powder preparation were evaluated. Their results are discussed on the basis of their tensile properties for moulded dumb-bells. The best procedure was then implemented for future work on phenolated pitch/ligin systems. Mouldings of different resin...

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2. 

   Preparation of Binders from Inexpensive By-products for Use in High-Pressure Phenolic Laminates: Reactive Phenosolvan Pitch-Lignin Derived Products for Use in Impregnating Varnishes and Testing of 6-Ply Hessian-Paper Laminates

   Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.E. Ysbrandy --- Department of Wood Science, G. F.R. Gerischer --- Department of Wood Science, R.D. Sanderson --- , Republic of South Africa

   Equal mixtures of phenosolvan pitch and autohydrolysis bagasse lignin in the presence of either acid or alkaline catalyst and without catalyst were submitted to a thermal treatment stage at 230°C (Phenolation). Each of the phenolated products was mixed with phenol...

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