Prestazioni di rilevamento del materiale di base del rivestimento e relativo metodo di rilevamento specifico
Il materiale di base del rivestimento si riferisce al materiale utilizzato come base e supporto nel rivestimento, compresa la resina, solvent, riempitivo, additive, eccetera. Coating base material is the main source of coating properties, which has an important influence on the quality and properties of coatings. in circostanze normali, the coating substrate needs to have certain adhesion, fluidità, durabilità, chemical stability and other characteristics to ensure the effect and durability of the coating in the application process. Common coating substrates include organic solvents, water-based resins, solvent-based resins, powder coatings and so on.
Prestazioni di rilevamento
The performance testing items of coating base material vary according to the specific type of base material, and generally include the following aspects:
Physical properties: densità, viscosità, fluidità, drying time, eccetera.
Chemical properties: chemical stability, acid and alkali resistance, resistenza all'acqua, eccetera.
Mechanical properties: durezza, forza, modulo elastico, eccetera.
Thermal performance: resistenza alle alte temperature, thermal conductivity, eccetera.
Optical properties: trasparenza, riflettività, eccetera.
Electrical properties: dielectric constant, conductivity, eccetera.
The following is a brief description of the test items and methods for common performance parameters of coating base materials:
Prestazioni di rilevamento del materiale di base del rivestimento e relativo metodo di rilevamento specifico
| Performance parameter | Test item | Metodo di rilevamento |
|---|---|---|
| Physical property | Physical property | Densitometer measurement |
| viscosità | Measurement using equipment such as a viscometer | |
| mobility | It is judged by observing the flow of the sample on the inclined plate | |
| Tempo di asciugatura | After drying the sample, the drying time was observed | |
| Chemical property | Chemical stability | The sample is exposed to a specific environment to observe its chemical stability |
| Acid-base resistance | Exposed to acid and alkali environment, observe its acid and alkali resistance | |
| Resistenza all'acqua | Soak the sample in water to observe its water resistance | |
| Mechanical property | durezza | Use a hardness tester and other equipment to measure |
| intensity | Through the sample stretching, compression and other tests obtained | |
| Modulus of elasticity | Use the elastic modulus meter and other equipment to measure | |
| Thermal performance | High temperature resistance | The sample is exposed to a high temperature environment to observe its high temperature resistance |
| Conduttività termica | Use thermal conductivity meter and other equipment to measure | |
| Optical property | trasparenza | Measurement using equipment such as a light transmitter |
| reflectance | Measurement using equipment such as reflectance meter | |
| Electrical property | Dielectric constant | Measurement using equipment such as a dielectric constant tester |
| Electric conductivity | Measurement using equipment such as conductivity meter |
Metodo di rilevamento
The performance testing method of coating base material varies according to the type and performance parameters of the base material. The following takes several common performance parameters as an example to briefly introduce the testing method of coating base material:
Densità: The density meter is usually used for measurement, loading the sample into the density meter and reading the density value on the display.
Viscosità: Can be measured using a variety of methods, of which the commonly used is the rotary viscometer, you can also use the direct drawing method, metodo a goccia, eccetera.
Chemical stability: The sample is exposed to a specific environment, such as high temperature, high humidity, acid and alkali environment exposure test, observe the changes of the sample in different environments, come il cambiamento di colore, physical property change, eccetera.
Prestazioni di rilevamento del materiale di base del rivestimento e relativo metodo di rilevamento specifico
Durezza: Use a hardness tester or Rockwell hardness tester to measure.
Forza: Using equipment such as tensile testing machine or compression testing machine for measurement, the sample is placed in the equipment, the corresponding force is applied, and the change of the sample under different forces is measured to obtain its strength value.
High temperature resistance: The sample is exposed to a high temperature environment, such as exposure in a constant temperature oven for a certain time, and the changes of the sample are observed, such as weight changes, appearance changes, eccetera.
Trasparenza: The transparency of the sample is obtained by using a device such as a light transmitter, where the sample is placed in a light transmitter and the intensity of light passing through the sample is measured.
Electrical properties: The use of dielectric constant tester, conductivity meter and other equipment for measurement, the sample is placed in the equipment, electrical properties test, so as to obtain the corresponding performance parameter values.
North and South tide reminds you: the performance testing method of the coating base material varies according to the type and performance parameters of the base material, and there may be some industry standards and specifications, for the performance testing of the coating base material, you should also choose the corresponding testing method according to the actual needs. Allo stesso tempo, in order to ensure the accuracy of the test results, the test equipment should be calibrated and maintained before the test.