Fibreglass paper

The whole apparatus is placed into a thermostatted furnace which is being washed with neutral gas in order to remove products of electrolysis. The electrodes are made of metals which can withstand the drastic conditions of the procedure, platinum for the anode and tungsten, nickel, copper or graphite for the cathode. The impregnated support (fibreglass paper) is equilibrated for about 1 h with the molten salt before the actual electrophoresis. The sample is applied from a capillary that can be moved from the outside of the furnace. 

J S Ghotra and G Pritchard, Blistering of fibreglass boat hulls . Proceedings 1st International Conference, Polymers in a Marine Environment, Institute of Marine Engineers, London, October/November 1984, paper 3, pp 15-22. 

The authors experimental design included the use of four medium-efficiency fibreglass filter papers of very low variability in order to effectively evaluate filter penetration versus particle diameter. A detailed description of the filters was tabulated and the homogeneity of these samples was demonstrated by the low coefficients of variation shown for both pressure drop and Q127 DOP penetration tests. It was... 

The most common non metallic honeycombs are made of Nomex, fibreglass and kraft paper. 

Other honeycombs made of fibreglass, kraft paper, graphite and Kevlar are also available for specific applications. 

Composite-skinned honeycomb panels These may use Nomex nylon paper honeycomb core, aluminium honeycomb or sometimes PVC (polyurethane or acrylic foam core). Dents are not acceptable in composite skins as they indicate fibre damage. Nomex core may split under a dent, so any such damage needs to be cut out and repaired. Nomex honeycomb can absorb considerable amounts of moisture. Wet honeycomb should be thoroughly dried or replaced. Moisture meters are available for use with Fibreglass, Kevlar or Nomex, but these meters will not work with carbon fibre because it is electrically conductive. Instruments that can indicate when carbon-fibre composites are dry enough to repair are few in number and very expensive. 

Kaolin is both dry- and wet-processed. The dry process is simpler and produces a lower quality product than the wet process. Dry-processed kaolin is used mainly in the rubber industry, and to a lesser extent, for paper filling and to produce fibreglass and sanitary ware. Wet-processed kaolin is used extensively in the paper manufactining industry. A process flow diagram for kaolin mining and dry processing is presented in Fig. 18.3 and Fig. 18.4 illustrates the wet processing of kaolin. 

The manufacture of PCBs is less complicated than that of ICBs. There are basically two types of PCB [16], the cheaper phenol-formaldehyde impregnated paper boards and the better quality epoxy resin and hard-ener/fibreglass PCBs. In these latter types, the fibre-glass acts as a reinforcement filler, and they are manufactured as described in the following sections [16,17]. 

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