DSC and TG analysis

Practical application of DSC, calorific value and TGA

Experienced technicians take very little time to analyze samples. Quickly obtained data allows you to make a decision on procurement in time, determine the suitability of goods for delivery, and change production processes. All these actions entail direct commercial benefits, or the absence of losses and claims from customers.

Thermal analytics is in demand in pharmaceuticals, organic chemistry and petrochemistry, in the production of glasses and polymers. With its help, the authenticity of medicines, compliance with sanitary and hygienic standards are checked. Low-melting minerals, metals and alloys, including antiques, can be investigated.

The information received indicates the cleanliness or contamination of the materials, their suitability for further use. Deliberate falsifications and accidental violations of technology are becoming apparent. Of particular value are DSC, determination of the heat of combustion and TGA in the study of high molecular weight substances with a complex structure, when the use of other methods is difficult.

The following is a list of typical tasks that are solved by the DSC and TGA methods.

Determination of composition

GOST 19920.13-74 Synthetic stereoregular butadiene rubbers. Method for determining the mass fraction of carbon black. This standard applies to stereoregular butadiene synthetic rubbers and specifies methods for determining the mass fraction of carbon black in them.

GOST 27980-88 Organic fertilizers. Methods for the determination of organic matter. This standard applies to organic fertilizers and specifies thermogravimetric, infrared and oximetric methods for the determination of the mass fraction of organic matter.

GOST 29127-91 Plastics. Thermogravimetric analysis of polymers. Temperature scanning method. This International Standard specifies the basic conditions for performing thermogravimetric measurements on polymers. This standard applies to polymers in powder form and to molded products from which a sample of appropriate dimensions can be cut.

Determination of ash content

GOST 19816.4-91 Rubber and rubber. Ash determination. This International Standard specifies methods for the determination of ash in raw rubbers, rubber compounds and vulcanizates.

GOST 15973-82 Plastics. Ash determination methods. This standard applies to plastics and specifies methods for the determination of ash and sulphated ash.

GOST 21119.10-75 Organic dyes and inorganic pigments. Ash content determination method. This standard applies to organic dyes and specifies a method for determining ash content by calcining and calcining with sulfuric acid treatment.

GOST 21119.9-75 Organic dyes and inorganic pigments. Method for determination of weight loss on ignition. This International Standard applies to inorganic pigments and specifies a method for the determination of weight loss on ignition.

GOST 13835-73 Synthetic high temperature resistant low molecular weight SKTN. Specifications - indicators "Weight loss" and "Thermal stability". This standard applies to synthetic low molecular weight dimethylsiloxane rubber SKTN, stabilized with active silica and cured by cold curing catalysts.

GOST 26714-85 Organic fertilizers. Ash determination method. This standard applies to organic fertilizers (excluding peat and peat products) and establishes a thermogravimetric method for determining the mass fraction of ash.

GOST 30355.2-96 Technical sulfur. Determination of ash at a temperature of 850-900 degrees. Celsus. and the remainder at a temperature of 200 degrees. Celsus. This standard specifies methods for the determination of the total content (mass fraction) of ash at a temperature of 850-900 degrees Celsius. and the remainder at a temperature of 200 degrees centigrade. in technical sulfur.

Weight loss on drying

GOST 19338-90 Synthetic rubber. Method for determination of weight loss on drying. This International Standard specifies a method for the determination of weight loss on drying of synthetic rubbers.

GOST 17537-72 Paints and varnishes. Methods for determining the mass fraction of volatile and non-volatile, solid and film-forming substances. This standard applies to paints and varnishes, their semi-finished products, resins, etc. and establishes methods for determining the mass fraction of volatile and non-volatile, solid and film-forming substances.

GOST 14043-78 Polyvinyl chloride and vinyl chloride copolymers. Method for determination of moisture and volatile matter content. This standard applies to polyvinyl chloride and vinyl chloride copolymers and specifies a method for the determination of moisture and volatile matter content by oven drying for a measuring range of 0.1% to 2.0%.

GOST 22456-77 Plastics. Method for determining the content of non-volatile and volatile substances in epoxy resins and compositions. This standard applies to epoxy resins and compositions and specifies a method for determining the content of non-volatile (solids) and volatile substances.

GOST 26359-84 Polyethylene. Method for determining the content of volatile substances. This standard applies to low and high pressure polyethylene and compositions based on it in the form of granules or powder.

GOST R 50535-93 Paints and varnishes. Methods for determining the volume fraction of non-volatile substances. This standard applies to paints and varnishes and establishes two methods for determining the volume fraction of non-volatile substances.

GOST R 50491-93 Plastics. Molding aminoplastics. Determination of volatile substances. This International Standard specifies a method for the determination of volatiles (mainly water) in molding aminoplastics by drying in an oven.

GOST 20851.4-75 Mineral fertilizers. Methods for determining water. This standard applies to mineral fertilizers containing from 0.1% to 12% water, and establishes methods for the determination of water.

GOST 21119.1-75 General test methods for pigments and fillers. Determination of the mass fraction of water and volatile substances. This standard applies to organic dyes (pigments and varnishes), inorganic pigments and fillers and specifies methods for the determination of the mass fraction of water.

GOST 26713-85 Organic fertilizers. Method for determination of moisture and dry residue. This standard applies to organic fertilizers (excluding peat and peat products) and establishes a method for determining the mass fraction of moisture and dry residue

GOST 30355.3-96 Technical sulfur. Determination of weight loss at a temperature of 80 degrees. Celsus. This standard specifies a method for determining the weight loss (mass fraction of water) of industrial sulfur at a temperature of 80 degrees Celsius.

GOST 19338-90 Synthetic rubber. Method for determination of weight loss on drying. This International Standard specifies a method for the determination of weight loss on drying of synthetic rubbers.

GOST 4013-82 Gypsum and gypsum anhydrite stone for the production of binding materials. Specifications - determination of the proportion of crystalline hydrate water and gypsum. This standard applies to gypsum and gypsum anhydrite stone, which is a product of the grinding of rocks consisting of natural gypsum minerals or a mixture of gypsum and anhydrite, and is used as a raw material for the production of gypsum binders and additives for the production of cement.

PND F 16.2.2: 2.3: 3.27-02 Methodology for measuring the mass fraction of moisture (moisture) in solid and liquid production and consumption wastes, sediments, sludge, activated sludge, bottom sediments by the gravimetric method.

Sorption measurements

GOST 21513-76 Paints and varnishes. Methods for determining water and moisture absorption by paint film. This standard applies to paints and varnishes and establishes methods for determining water absorption by a paint film on a painted surface and moisture absorption by a free film of a paint and varnish material.

Fire hazard

GOST 9.715-86 Unified system of protection against corrosion and aging. Polymer materials. Test methods for resistance to temperature.

GOST R 53293-2009 Fire hazard of substances and materials. Materials, substances and means of fire protection. Identification by thermal analysis methods.