| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 5<\/td>\n | TitlePage – Carbon fibre\ufffd\u2014 Determination of size content <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | TableofContent – Contents Page <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Foreword – Foreword <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Scope – 1\ufffd\ufffd\ufffd Scope NormativeReference – 2\ufffd\ufffd\ufffd Normative reference Clause1 – 4\ufffd\ufffd\ufffd Principle <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Clause1 – 5\ufffd\ufffd\ufffd Test specimens Clause1 – 6\ufffd\ufffd\ufffd Conditioning Clause1 – 7\ufffd\ufffd\ufffd Test methods Subclause2 – 7.1\ufffd\ufffd\ufffd Method\ufffdA: Solvent extraction Subclause3 – 7.1.1\ufffd\ufffd\ufffd Apparatus and materials UntitledSubclause4 – 7.1.1.1\ufffd\ufffd\ufffd Balance UntitledSubclause4 – 7.1.1.2\ufffd\ufffd\ufffd Hot-air oven UntitledSubclause4 – 7.1.1.3\ufffd\ufffd\ufffd Desiccator UntitledSubclause4 – 7.1.1.4\ufffd\ufffd\ufffd Soxhlet extractor UntitledSubclause4 – 7.1.1.5\ufffd\ufffd\ufffd Soxhlet extraction thimbles UntitledSubclause4 – 7.1.1.6\ufffd\ufffd\ufffd Rubber gloves UntitledSubclause4 – 7.1.1.7\ufffd\ufffd\ufffd Cutting blade UntitledSubclause4 – 7.1.1.8\ufffd\ufffd\ufffd Heating mantle UntitledSubclause4 – 7.1.1.9\ufffd\ufffd\ufffd Distilled water <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Subclause3 – 7.1.2\ufffd\ufffd\ufffd Procedure\ufffd1 UntitledSubclause4 – 7.1.2.1\ufffd\ufffd\ufffd Dry an extraction thimble ( UntitledSubclause4 – 7.1.2.2\ufffd\ufffd\ufffd Weigh the thimble to the nearest UntitledSubclause4 – 7.1.2.3\ufffd\ufffd\ufffd Place a test specimen in the thimble and weigh to the nearest UntitledSubclause4 – 7.1.2.4\ufffd\ufffd\ufffd Place the thimble and its contents in the siphon chamber of the S… UntitledSubclause4 – 7.1.2.5\ufffd\ufffd\ufffd Extract for UntitledSubclause4 – 7.1.2.6\ufffd\ufffd\ufffd Turn off the heating mantle. Wait UntitledSubclause4 – 7.1.2.7\ufffd\ufffd\ufffd Dry the thimble and contents for UntitledSubclause4 – 7.1.2.8\ufffd\ufffd\ufffd Repeat the drying and weighing procedure until the difference in … Subclause3 – 7.1.3\ufffd\ufffd\ufffd Procedure\ufffd2 UntitledSubclause4 – 7.1.3.1\ufffd\ufffd\ufffd If the specimen is free of loose fibre and can be coiled into a f… UntitledSubclause4 – 7.1.3.2\ufffd\ufffd\ufffd Weigh the test specimen to the nearest UntitledSubclause4 – 7.1.3.3\ufffd\ufffd\ufffd Carry out the extraction as described in UntitledSubclause4 – 7.1.3.4\ufffd\ufffd\ufffd Dry the specimen for UntitledSubclause4 – 7.1.3.5\ufffd\ufffd\ufffd Repeat the drying and weighing procedure until the difference in … Subclause3 – 7.1.4\ufffd\ufffd\ufffd Expression of results Subclause4 – 7.1.4.1\ufffd\ufffd\ufffd Procedure\ufffd1 <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Subclause4 – 7.1.4.2\ufffd\ufffd\ufffd Procedure\ufffd2 Subclause2 – 7.2\ufffd\ufffd\ufffd Method\ufffdB: Digestion with sulfuric acid and hydrogen peroxide Subclause3 – 7.2.1\ufffd\ufffd\ufffd Apparatus and reagents UntitledSubclause4 – 7.2.1.1\ufffd\ufffd\ufffd Balance UntitledSubclause4 – 7.2.1.2\ufffd\ufffd\ufffd Hot-air oven UntitledSubclause4 – 7.2.1.3\ufffd\ufffd\ufffd Desiccator UntitledSubclause4 – 7.2.1.4\ufffd\ufffd\ufffd Fume cupboard UntitledSubclause4 – 7.2.1.5\ufffd\ufffd\ufffd Rubber gloves UntitledSubclause4 – 7.2.1.6\ufffd\ufffd\ufffd Sintered-glass filters UntitledSubclause4 – 7.2.1.7\ufffd\ufffd\ufffd Cutting blade UntitledSubclause4 – 7.2.1.8\ufffd\ufffd\ufffd Dry-block heater UntitledSubclause4 – 7.2.1.9\ufffd\ufffd\ufffd Concentrated sulfuric acid UntitledSubclause4 – 7.2.1.10\ufffd\ufffd\ufffd Hydrogen peroxide solution UntitledSubclause4 – 7.2.1.11\ufffd\ufffd\ufffd Sodium hydroxide solution <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Subclause3 – 7.2.2\ufffd\ufffd\ufffd Procedure UntitledSubclause4 – 7.2.2.1\ufffd\ufffd\ufffd Pre-heat the heating block ( UntitledSubclause4 – 7.2.2.2\ufffd\ufffd\ufffd Fill each of the dropping funnels with approximately UntitledSubclause4 – 7.2.2.3\ufffd\ufffd\ufffd Weigh a test specimen of carbon fibre yarn to the nearest UntitledSubclause4 – 7.2.2.4\ufffd\ufffd\ufffd Place the exhaust hood (see UntitledSubclause4 – 7.2.2.5\ufffd\ufffd\ufffd Start the suction pump (see UntitledSubclause4 – 7.2.2.6\ufffd\ufffd\ufffd Slowly open the dropping funnels containing the hydrogen peroxide… UntitledSubclause4 – 7.2.2.7\ufffd\ufffd\ufffd Use the laboratory jack to raise the heating block round the dige… UntitledSubclause4 – 7.2.2.8\ufffd\ufffd\ufffd Allow the digestion tubes to remain in the heating block at UntitledSubclause4 – 7.2.2.9\ufffd\ufffd\ufffd Lower the heating block away from the digestion tubes. If a solut… UntitledSubclause4 – 7.2.2.10\ufffd\ufffd\ufffd Allow the digested specimens to cool to room temperature. UntitledSubclause4 – 7.2.2.11\ufffd\ufffd\ufffd Heat sintered-glass filters ( UntitledSubclause4 – 7.2.2.12\ufffd\ufffd\ufffd Filter each solution slowly through a sintered-glass filter and … UntitledSubclause4 – 7.2.2.13\ufffd\ufffd\ufffd Dry the sintered-glass filters and specimens for UntitledSubclause4 – 7.2.2.14\ufffd\ufffd\ufffd Repeat the drying and weighing procedure until the difference in… UntitledSubclause4 – 7.2.2.15\ufffd\ufffd\ufffd A correction factor will be required if the digestion causes a s… Subclause3 – 7.2.3\ufffd\ufffd\ufffd Expression of results <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Subclause2 – 7.3\ufffd\ufffd\ufffd Method\ufffdC: Decomposition by pyrolysis Subclause3 – 7.3.1\ufffd\ufffd\ufffd Principle Subclause3 – 7.3.2\ufffd\ufffd\ufffd Apparatus UntitledSubclause4 – 7.3.2.1\ufffd\ufffd\ufffd Balance UntitledSubclause4 – 7.3.2.2\ufffd\ufffd\ufffd Electric furnace UntitledSubclause4 – 7.3.2.3\ufffd\ufffd\ufffd Nitrogen supply unit UntitledSubclause4 – 7.3.2.4\ufffd\ufffd\ufffd Specimen holder Subclause3 – 7.3.3\ufffd\ufffd\ufffd Procedure UntitledSubclause4 – 7.3.3.1\ufffd\ufffd\ufffd Heat the specimen holder ( UntitledSubclause4 – 7.3.3.2\ufffd\ufffd\ufffd Weigh a test specimen to the nearest UntitledSubclause4 – 7.3.3.3\ufffd\ufffd\ufffd Adjust the flow of nitrogen to the furnace so that the furnace wi… UntitledSubclause4 – 7.3.3.4\ufffd\ufffd\ufffd Place the specimen in the weighed specimen holder and place in th… UntitledSubclause4 – 7.3.3.5\ufffd\ufffd\ufffd Decompose the size on the specimen for the specified time at the … UntitledSubclause4 – 7.3.3.6\ufffd\ufffd\ufffd Either switch off the furnace and allow the specimen to cool in t… UntitledSubclause4 – 7.3.3.7\ufffd\ufffd\ufffd Allow the specimen plus specimen holder to cool to room temperatu… <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | UntitledSubclause4 – 7.3.3.8\ufffd\ufffd\ufffd A correction factor will be required if the temperature and time … UntitledSubclause4 – 7.3.3.9\ufffd\ufffd\ufffd If the nature of the material under test permits, the procedure m… Subclause3 – 7.3.4\ufffd\ufffd\ufffd Expression of results Clause1 – 8\ufffd\ufffd\ufffd Precision Clause1 – 9\ufffd\ufffd\ufffd Test report <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Carbon fibre. Determination of size content<\/b><\/p>\n |