Kinerja deteksi bahan dasar pelapis dan metode deteksi spesifiknya
Bahan dasar pelapis mengacu pada bahan yang digunakan sebagai bahan dasar dan pembawa dalam pelapis, termasuk damar, solvent, pengisi, additive, dll.. Coating base material is the main source of coating properties, which has an important influence on the quality and properties of coatings. Dalam keadaan normal, the coating substrate needs to have certain adhesion, ketidakstabilan, daya tahan, 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.
Kinerja deteksi
The performance testing items of coating base material vary according to the specific type of base material, and generally include the following aspects:
Properti fisik: kepadatan, viskositas, ketidakstabilan, drying time, dll..
Chemical properties: chemical stability, acid and alkali resistance, tahan air, dll..
Mechanical properties: kekerasan, kekuatan, modulus elastis, dll..
Thermal performance: ketahanan suhu tinggi, thermal conductivity, dll..
Sifat optik: transparansi, reflectivity, dll..
Electrical properties: dielectric constant, daya konduksi, dll..
The following is a brief description of the test items and methods for common performance parameters of coating base materials:
Kinerja deteksi bahan dasar pelapis dan metode deteksi spesifiknya
| Performance parameter | Test item | Metode deteksi |
|---|---|---|
| Physical property | Physical property | Densitometer measurement |
| viskositas | Measurement using equipment such as a viscometer | |
| mobility | It is judged by observing the flow of the sample on the inclined plate | |
| Drying time | 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 | |
| Tahan air | Soak the sample in water to observe its water resistance | |
| Mechanical property | kekerasan | 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 | Tahan suhu tinggi | 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 | transparansi | Measurement using equipment such as a light transmitter |
| reflektansi | 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 |
Metode deteksi
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:
Kepadatan: The density meter is usually used for measurement, loading the sample into the density meter and reading the density value on the display.
Viskositas: 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, drip method, dll..
Chemical stability: The sample is exposed to a specific environment, misalnya suhu tinggi, kelembaban tinggi, acid and alkali environment exposure test, observe the changes of the sample in different environments, seperti perubahan warna, physical property change, dll..
Kinerja deteksi bahan dasar pelapis dan metode deteksi spesifiknya
Kekerasan: Use a hardness tester or Rockwell hardness tester to measure.
Kekuatan: 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.
Tahan suhu tinggi: 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, dll..
Transparansi: 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, dan mungkin ada beberapa standar dan spesifikasi industri, for the performance testing of the coating base material, you should also choose the corresponding testing method according to the actual needs. Pada saat yang sama, in order to ensure the accuracy of the test results, the test equipment should be calibrated and maintained before the test.