Laboratory

Linde Polymer Tec Co., Ltd has a rubber material testing laboratory, the laboratory has tensile tester, infrared analysis tester, thermogravimetric analyzer, low temperature tester, heat aging tester and other testing instruments and equipment, can complete rubber normal, oil resistance, low temperature, aging and other tests, and can do infrared analysis tests on samples.

Sulfur gauge

Ozone tester

Cryo tester

Infrared

spectroscopy tester

TGA analyzer

Sulfur gauge

• The sulfur content meter is indispensable in the control of raw materials, rubber formula, aging and physical properties in the production of rubber products.When controlling raw materials, the sulfur content of natural and synthetic rubber has a significant impact on the quality of the finished product. It can accurately detect, help screen high-quality raw materials, ensure the purity and quality of synthetic rubber, and lay the foundation for production. During rubber vulcanization, sulfur crosslinks the rubber molecular chain to change its properties. The meter not only accurately detects the sulfur content of the finished product, but also monitors the change of sulfur content during vulcanization in real time. Because the vulcanization reaction is affected by many factors, such as different reaction rates at different vulcanization temperatures, the meter can be used to determine the optimal vulcanization temperature and time combination to improve efficiency and quality. The amount of sulfur in the rubber formula is the key. By measuring the sulfur content of samples with different formulas and combining performance tests, the amount of sulfur and other compounding agents can be flexibly adjusted to develop high-quality formulas.

• In the study of aging and physical properties, measuring the sulfur content before and after aging and correlating it with tensile and hardness tests can clarify the law of sulfur's influence on performance, help producers adjust processes and formulas, and meet the diverse needs of rubber products.

Ozone Tester

• Rubber seals are often exposed to ozone-containing environments during use. For example, electrical discharge in a car's engine compartment will generate ozone. Ozone testers focus on detecting ambient ozone concentrations, which are of great significance in rubber seal application scenarios and can accurately measure the ozone environment in which they are located. By using an ozone tester to accurately measure ambient ozone concentrations, it can lay a solid foundation for basic data for evaluating the service life and performance changes of rubber seals, help related industries gain an in-depth understanding of the performance of rubber seals in ozone environments, optimize product design and usage strategies, and improve the reliability and durability of rubber seals in ozone-containing environments, so as to meet the stringent requirements for rubber seals in multiple fields such as automobiles and industry, and ensure the normal operation of equipment and stable product quality.

Cryo tester

• Low temperature testers can accurately simulate and measure various parameters of low temperature environments, such as temperature range, cooling rate, etc. By using low temperature testers to test rubber seals, it is possible to determine the performance changes of rubber seals under low temperature conditions, including changes in the hardness of rubber materials, changes in elastic modulus, the quality of sealing performance, and changes in tensile and compressive resistance, etc. This helps to evaluate the reliability and durability of rubber seals in low temperature environments, and provides a key basis for material selection, product design, and quality control of rubber seals.

Infrared

spectroscopy tester

• An infrared spectrometer is an instrument that can determine the chemical structure of a substance by measuring the absorption of infrared light by molecules. For rubber seals, it can be used to analyze the composition of rubber materials. Rubber seals are usually composed of a rubber matrix and various additives (such as vulcanizers, accelerators, antioxidants, fillers, etc.).
• Using an infrared spectrometer, different types of rubber such as natural rubber, nitrile rubber, and EPDM rubber have their own unique characteristic absorption peaks on the infrared spectrum. By analyzing these characteristic peaks, the rubber matrix composition of rubber seals can be accurately determined.
• At the same time, the type and content of additives can also be detected. For example, in vulcanized rubber seals, vulcanizers react chemically with rubber molecules to form a cross-linked structure. Infrared spectrometers can detect new chemical bonds generated during the vulcanization process, such as bonds (absorption peaks may appear on the left and right), thereby determining the use of vulcanizers. Fillers (such as carbon black, calcium carbonate, etc.) will also show corresponding absorption peaks in the infrared spectrum, helping to determine their presence and approximate content in rubber seals.

TGA analyzer

• TGA (Thermogravimetric Analyzer) is mainly used to study the mass change of materials during heating. For rubber seals, it can help determine the content of various components in rubber seals.
• Rubber seals are composed of a rubber matrix and a variety of additives, such as fillers, vulcanizers, antioxidants, etc.
• Different components have different thermal decomposition behaviors during heating. The thermal decomposition process of natural rubber is relatively complex, and generally begins to show obvious mass loss at around 300-400℃, which is due to the breakage and decomposition of the rubber molecular chain. Fillers (such as carbon black) have high thermal stability and will still retain a certain mass after the rubber matrix is ​​decomposed. Through TGA analysis, the mass ratio of different components in rubber seals can be distinguished according to the curve of mass change with temperature, thereby determining the content of rubber and various additives.