ISO INTERNATIONAL 8619 STANDARD Third edition 2003-04-01 Plastics Phenolic resin powder- Determination of flow distance on a heated glass plate PlastiquesResinesphenoliquesenpoudreDetermination dela distanced'ecoulementsuruneplaque deverre chauffee Reference number ISO 8619:2003(E) ISO = Contents Page Foreword, iv 1 Scope.. 2 Principle .. 3 Apparatus... 4 Procedure... 1 5 Expressionof results... 3 6 Precision. 7 Test report.. 4 ili Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2 adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 8619 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials. iv PlasticsPhenolicresinpowderDeterminationofflow distanceonaheatedglassplate Scope 1.1This International Standard specifies a method for the determination of the flow distance of powdered conditions 1.2 The flow distance is dependent on the reactivity and melt viscosity of the resins. Rapid solidification and high melt viscosity shorten the flow distance. Principle Tablets are first produced under defined conditions and are placed on a glass plate which has been heated to (125 ± 1) °C in a naturally ventilated oven. The plate, with the tablets on it, is kept in the oven for 3 min in the horizontalpositionandthenfor2omininatiltedposition.Theflowdistanceisthenmeasured. Apparatus 3.1 Oven with natural ventilation, capable of maintaining a temperature of (125± 1)°C. Use a spirit level tablets. 3.2 Cylindrical tablet press, for producing tablets (12,5 ± 0,3) mm in diameter and (4,8 ± 0,2) mm thick 3.3 Balance, accurate to 1 mg. 3.4 Tilting device, made of metal, which can be manipulated from outside or after opening the oven, to position the glass plate (3.5) either horizontally or at an angle of 60° ± 1° (see Figure 1). 3.5 Glass plate, of a suitable size to fit in the oven, for example length 100 mm to 150 mm, width 60 mm to 120 mm, thickness 2,7 mm to 3 mm. The glass plate shall be absolutely clean, smooth and without scratches ontheplate. NOTE The starting line is scored on the plate using a glass cutter. It has no influence on the result, and is simply used for precise positioning of the tablets and for measuring the flow distance. 4Procedure powdered resin in a desiccator for at least 48 h over phosphorus pentoxide. NOTE The water content of the sample has a marked influence on the flow distance 1 lever handle. Eject the tablet from the mould by removing parts C and D [see Figure 2b)] and by pushing the shaft of part B into part A [see Figure 2c)]. Make two tablets in this way. NOTE With resin powders having a high apparent density (those containing inorganic additives, for example), more 4.3Lay the glass plate (3.5) on the tilting device (3.4) in the horizontal position in the oven (3.1), maintained at a temperature of (125 ± 1) °C, and heat for at least 60 min. Open the door of the oven and, within 5 s and without removing the plate from the oven, lay the two tablets (see 4.2) flat on the glass, at least 1 cm apart and at least 1 cm away from the side edges and what will be the upper edge when the plate is tilted. Keep the glass plate with the tablets on it for 3 min ± 3 s in the horizontal position. Then tilt the device quickly 60° ± 1° (see Figure 1). 4.4After 20 min in the inclined position, remove the glass plate from the oven and allow it to cool. Then measure for each tablet the flow distance, including the distance corresponding to the tablet diameter, to the nearest 1 mm. Should a tablet s