أداء الكشف عن المواد الأساسية للطلاء وطريقة الكشف المحددة عنها
تشير المادة الأساسية للطلاء إلى المادة المستخدمة كقاعدة وحامل في الطلاء, بما في ذلك الراتنج, مذيب, حشو, additive, إلخ. Coating base material is the main source of coating properties, which has an important influence on the quality and properties of coatings. في الظروف الطبيعية, the coating substrate needs to have certain adhesion, سيولة, متانة, 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.
أداء الكشف
The performance testing items of coating base material vary according to the specific type of base material, and generally include the following aspects:
الخصائص الفيزيائية: كثافة, اللزوجة, سيولة, drying time, إلخ.
Chemical properties: chemical stability, مقاومة الأحماض والقلويات, مقاوم المياه, إلخ.
Mechanical properties: صلابة, قوة, معامل المرونة, إلخ.
Thermal performance: مقاومة درجات الحرارة العالية, توصيل حراري, إلخ.
الخواص البصرية: الشفافية, reflectivity, إلخ.
الخصائص الكهربائية: dielectric constant, التوصيل, إلخ.
The following is a brief description of the test items and methods for common performance parameters of coating base materials:
أداء الكشف عن المواد الأساسية للطلاء وطريقة الكشف المحددة عنها
Performance parameter | Test item | طريقة الكشف |
---|---|---|
Physical property | Physical property | Densitometer measurement |
اللزوجة | Measurement using equipment such as a viscometer | |
mobility | It is judged by observing the flow of the sample on the inclined plate | |
وقت التجفيف | 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 | |
مقاوم المياه | Soak the sample in water to observe its water resistance | |
Mechanical property | صلابة | 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 | مقاومة درجات الحرارة العالية | 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 | الشفافية | Measurement using equipment such as a light transmitter |
الانعكاس | Measurement using equipment such as reflectance meter | |
Electrical property | Dielectric constant | Measurement using equipment such as a dielectric constant tester |
الموصلية الكهربائية | Measurement using equipment such as conductivity meter |
طريقة الكشف
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:
كثافة: The density meter is usually used for measurement, loading the sample into the density meter and reading the density value on the display.
اللزوجة: 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, طريقة التنقيط, إلخ.
Chemical stability: The sample is exposed to a specific environment, مثل ارتفاع درجة الحرارة, رطوبة عالية, acid and alkali environment exposure test, observe the changes of the sample in different environments, مثل تغيير اللون, physical property change, إلخ.
أداء الكشف عن المواد الأساسية للطلاء وطريقة الكشف المحددة عنها
صلابة: Use a hardness tester or Rockwell hardness tester to measure.
قوة: 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.
مقاومة درجات الحرارة العالية: 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, إلخ.
الشفافية: 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.
الخصائص الكهربائية: 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.
يذكرك المد الشمالي والجنوبي: the performance testing method of the coating base material varies according to the type and performance parameters of the base material, وقد تكون هناك بعض معايير ومواصفات الصناعة, for the performance testing of the coating base material, you should also choose the corresponding testing method according to the actual needs. في نفس الوقت, in order to ensure the accuracy of the test results, the test equipment should be calibrated and maintained before the test.