Які властивості необхідно перевірити затвердителям? Як виявити?
Зміцнювач відноситься до добавки, яка може підвищити міцність матеріалів, mainly used to improve the impact resistance, toughness and crack resistance of plastics, гумовий, coatings and other materials to improve the mechanical properties and service life of materials. The toughening agent is usually a polymer compound or inorganic substance, with a high molecular weight and molecular weight distribution, which can form a uniformly dispersed phase in the material, so as to effectively absorb and disperse stress, and improve the toughness and impact resistance of the material. Common toughening agents include polyurethane, acrylate copolymer, ethylene-propylene copolymer, calcium silicate, sodium aluminum silicate, тощо.
Performance index
The following are common tougheners and the properties and indicators that may need to be tested:
The following are common tougheners and the properties and indicators that may need to be tested:
Які властивості необхідно перевірити затвердителям? Як виявити?
| Toughening agent | Performance and metrics that may need to be tested |
|---|---|
| polyurethane | Міцність на розрив, подовження, impact strength, термостійкість, weather resistance, стійкість до корозії |
| Acrylate copolymer | Thermal deformation temperature, температура склування, міцність на розрив, elongation at break, стійкість до ударів, weather resistance, chemical resistance |
| Ethylene-propylene copolymer | Impact strength, bending modulus, термостійкість, міцність на розрив, elongation at break, weather resistance, chemical resistance |
| Calcium silicate | Particle size, particle distribution, specific surface area, твердість, в'язкість, rheological property, dispersion |
| Sodium aluminum silicate | Particle size, particle distribution, specific surface area, твердість, в'язкість, rheological property, dispersion, термостійкість, weather resistance |
The properties and indicators to be tested mainly include physical properties, mechanical properties, thermal properties, weather resistance, corrosion resistance and so on. The specific test methods and test standards may vary depending on the type of toughening agent, application scenarios and requirements. Commonly used test methods include tensile testing, impact testing, thermal analysis, particle analysis, rheological property testing, тощо. У практичних застосуваннях, it is necessary to make reasonable selection and use according to specific requirements, and to test and control in the production process to ensure product quality.
Які властивості необхідно перевірити затвердителям? Як виявити?
Метод випробування
How to test the performance and indicators of the toughening agent, it is necessary to select the corresponding test methods and test standards according to different performance and indicators. Here are some common testing methods:
Випробування на розтяг: can measure the influence of the toughening agent on the tensile strength, elongation and other properties of the material. The test methods include tensile test and shear test.
Impact testing: The impact of the toughening agent on the impact resistance of the material can be measured. The test methods include impact test and drop hammer test.
Thermal analysis: The influence of the toughening agent on the thermal stability, glass transition temperature and other properties of the material can be measured. The test methods include thermogravimetric analysis, differential thermal analysis, thermal expansion analysis, тощо.
Particle analysis: can measure the toughening agent particle size, particle distribution, specific surface area and other indicators. The test methods include laser particle size analyzer, electron microscope, тощо.
Які властивості необхідно перевірити затвердителям? Як виявити?
Rheological performance test: The effect of the toughening agent on the rheological performance of the material can be measured. The test methods include rotary viscometer, dynamic mechanical analyzer, тощо.
When testing the performance of toughening agent, it is necessary to select the corresponding test method and test standard according to the specific requirements, and ensure the accuracy and reliability of the test results.