涂料基材的检测性能及其具体检测方法
涂料基材是指在涂料中作为基底和载体的材料, 包括树脂, solvent, 填料, additive, ETC. Coating base material is the main source of coating properties, which has an important influence on the quality and properties of coatings. 在正常情况下, the coating substrate needs to have certain adhesion, 流动性, 耐用性, 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.
检测性能
The performance testing items of coating base material vary according to the specific type of base material, and generally include the following aspects:
物理特性: 密度, 粘度, 流动性, drying time, ETC.
Chemical properties: 化学稳定性, 耐酸碱, 耐水性, ETC.
机械性能: 硬度, 力量, 弹性模量, ETC.
Thermal performance: 耐高温, 导热系数, ETC.
光学特性: 透明度, reflectivity, ETC.
Electrical properties: dielectric constant, 电导率, ETC.
The following is a brief description of the test items and methods for common performance parameters of coating base materials:
涂料基材的检测性能及其具体检测方法
| 性能参数 | Test item | 检测方法 |
|---|---|---|
| Physical property | Physical property | Densitometer measurement |
| 粘度 | Measurement using equipment such as a viscometer | |
| mobility | It is judged by observing the flow of the sample on the inclined plate | |
| 干燥时间 | 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 | |
| 耐水性 | Soak the sample in water to observe its water resistance | |
| Mechanical property | 硬度 | 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 | 耐高温 | 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 | |
| 光学性能 | 透明度 | Measurement using equipment such as a light transmitter |
| 反射率 | 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 |
检测方法
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:
密度: The density meter is usually used for measurement, loading the sample into the density meter and reading the density value on the display.
粘度: 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, 滴水法, ETC.
Chemical stability: The sample is exposed to a specific environment, 比如高温, 高湿度, acid and alkali environment exposure test, observe the changes of the sample in different environments, 比如颜色的变化, 物理性质变化, ETC.
涂料基材的检测性能及其具体检测方法
硬度: Use a hardness tester or Rockwell hardness tester to measure.
力量: 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.
耐高温: 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, ETC.
透明度: 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.
南北潮提醒你: the performance testing method of the coating base material varies according to the type and performance parameters of the base material, 并且可能有一些行业标准和规范, for the performance testing of the coating base material, you should also choose the corresponding testing method according to the actual needs. 同时, in order to ensure the accuracy of the test results, the test equipment should be calibrated and maintained before the test.