Која својства треба да тестирају учвршћивачи? Како открити?
Средство за учвршћивање се односи на адитив који може повећати жилавост материјала, mainly used to improve the impact resistance, toughness and crack resistance of plastics, гума, 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, итд.
Индекс учинка
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:
Која својства треба да тестирају учвршћивачи? Како открити?
| Toughening agent | Performance and metrics that may need to be tested |
|---|---|
| полиуретан | Затезна чврстоћа, издужење, impact strength, thermal stability, отпорност на временске услове, отпорност на корозију |
| Acrylate copolymer | Thermal deformation temperature, glass transition temperature, затезна чврстоћа, издужење при прекиду, отпорност на удар, отпорност на временске услове, хемијска отпорност |
| Ethylene-propylene copolymer | Impact strength, bending modulus, thermal stability, затезна чврстоћа, издужење при прекиду, отпорност на временске услове, хемијска отпорност |
| Calcium silicate | Particle size, particle distribution, specific surface area, тврдоћа, вискозитет, rheological property, dispersion |
| Sodium aluminum silicate | Particle size, particle distribution, specific surface area, тврдоћа, вискозитет, rheological property, dispersion, thermal stability, отпорност на временске услове |
The properties and indicators to be tested mainly include physical properties, mechanical properties, thermal properties, отпорност на временске услове, 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, итд. In practical applications, 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.
Која својства треба да тестирају учвршћивачи? Како открити?
Метод тестирања
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:
Tensile test: 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, итд.
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, итд.
Која својства треба да тестирају учвршћивачи? Како открити?
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, итд.
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.