1. What method is commonly used for thermogravimetric analysis? Thermogravimetric analysis generally involves placing the sample in an aluminum crucible and weighing it on a balance before and after placing it to obtain the weight of the sample. The purpose of obtaining the weight is to make the sample weight suitable for the highest possible thermogravimetric accuracy. After the sample is placed, the crucible cover and crucible should be pressed together on a dedicated tablet press to prevent the sample from being ejected from the crucible by the thermal decomposition airflow or thermal decomposition jet during the heating process, which may cause non thermal decomposition weight loss in the experiment. The sample crucible is placed in the sample furnace of the thermogravimetric analyzer, and at the same time, a reference sample or an empty crucible without a reference material is placed in the reference furnace. The reference material, such as alumina powder, should also be placed in an aluminum crucible and sealed with a lid. The reference material is a thermally stable substance that has no thermal effect in the measured temperature range. Set parameters such as heating rate and end temperature to start the experiment. Usually it is done automatically. The thermogravimetric analyzer includes weighing equipment and electronic circuits. As the temperature rises and the sample quality changes, the instrument records the data of sample temperature and sample weight in real time, which is called thermogravimetric curve (TG) or differential thermogravimetric curve (DTG) that records the relationship between sample temperature and weight and time (also temperature, because the heating rate is generally constant), becoming a thermogravimetric curve or differential thermogravimetric curve. The thermogravimetric analysis curves of several samples are shown in the attached figure to give you an intuitive understanding. The numbers on the curve represent temperature values.

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Yes, ISO/TC 67 2006 new standard catalog ------------------------------------------------------------------------------------------------------ Petroleum and natural gas industries -- Drilling fluid materials -- Specifications and tests　　2006-　　02-09　　2　　ISO 16708　　 Petroleum and natural gas industry - Pipeline design, operation, and maintenance - Reliability based limit state design method for pipelines Petroleum and natural gas industries -- Pipeline design, operation, and maintenance -- Reliability-based limit state methods　　2006-03-22　　3　　ISO 13503　　-3:2005/　　Cor. 1:2006　　 Petroleum and natural gas industries - Completion fluids and materials - Part 3: Heavy saltwater testing - Technical errata 1 Petroleum and natural gas industries -- Completion fluids and materials -- Part 3: Testing of heavy brines -- Technical Corrigendum 1　　2006-03-31　　4　　ISO　　13628-6　　 Petroleum and natural gas industries - Design and operation of subsea extraction systems - Part 6: Subsea extraction systems Petroleum and natural gas industries -- Design and operation of subsea production systems -- Part 6: Subsea production systems　　2006-05-15　　5　　ISO 11960:　　2004/Tech. Cor. 1:2006　　 Petroleum and natural gas industries - Steel pipes for oil well casing or tubing - Technical errata 1 Petroleum and natural gas

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