ביצועי זיהוי של חומר בסיס ציפוי ושיטת זיהוי ספציפית שלו
חומר בסיס הציפוי מתייחס לחומר המשמש כבסיס וכנשא בציפוי, כולל שרף, solvent, מִלוּי, additive, וכו. Coating base material is the main source of coating properties, which has an important influence on the quality and properties of coatings. בנסיבות רגילות, the coating substrate needs to have certain adhesion, נְזִילוּת, עֲמִידוּת, 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.
ביצועי זיהוי
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: צְפִיפוּת, צְמִיגוּת, נְזִילוּת, drying time, וכו.
Chemical properties: chemical stability, acid and alkali resistance, water resistance, וכו.
Mechanical properties: קַשִׁיוּת, כוח, מודול אלסטי, וכו.
Thermal performance: עמידות בטמפרטורה גבוהה, thermal conductivity, וכו.
Optical properties: transparency, reflectivity, וכו.
Electrical properties: dielectric constant, conductivity, וכו.
The following is a brief description of the test items and methods for common performance parameters of coating base materials:
ביצועי זיהוי של חומר בסיס ציפוי ושיטת זיהוי ספציפית שלו
| Performance parameter | Test item | שיטת זיהוי |
|---|---|---|
| Physical property | Physical property | Densitometer measurement |
| צְמִיגוּת | Measurement using equipment such as a viscometer | |
| mobility | It is judged by observing the flow of the sample on the inclined plate | |
| זמן ייבוש | 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 | |
| עמיד במים | Soak the sample in water to observe its water resistance | |
| Mechanical property | קַשִׁיוּת | 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 |
| Thermal conductivity | Use thermal conductivity meter and other equipment to measure | |
| Optical property | transparency | 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 |
| מוליכות חשמלית | Measurement using equipment such as conductivity meter |
שיטת זיהוי
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:
צְפִיפוּת: The density meter is usually used for measurement, loading the sample into the density meter and reading the density value on the display.
צְמִיגוּת: 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, שיטת טפטוף, וכו.
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, כמו שינוי צבע, physical property change, וכו.
ביצועי זיהוי של חומר בסיס ציפוי ושיטת זיהוי ספציפית שלו
Hardness: Use a hardness tester or Rockwell hardness tester to measure.
Strength: 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, וכו.
Transparency: 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.
גאות צפון ודרום מזכירה לך: 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. באותו הזמן, in order to ensure the accuracy of the test results, the test equipment should be calibrated and maintained before the test.