Alkyd resin is a resin with alcohol and acid functional groups, which is commonly used in coatings, inks, adhesives and other fields. Its basic structure is a linear or cross-linked polymer compound formed by the condensation reaction of multiple alcohol and acid functional groups. It has good solubility, processability and chemical corrosion resistance. Alkyd resin is widely used in the field of coatings, because of its excellent adhesion, corrosion resistance and chemical resistance, it can be applied to the surface protection and decoration of metal, wood, glass and other materials.
Detection performance
The following are common performance indicators and testing methods of alkyd resins, as shown in the following table:
| Performance | Detection method |
|---|---|
| viscosity | Viscometer |
| density | Density meter |
| Solid content | heat drying method |
| drying time | Drying Oven |
| Chemical resistance | Corrosion test |
| Water resistance | water immersion test |
| Temperature resistance | Thermal Stability Test |
| UV resistance | UV aging test |
| Wear resistance | wear test |
| Weather resistance | weather aging test |
| Adhesion | peel test |
| Tensile Strength | Stretching test |
| elongation at break | Stretching test |
| hardness | Hardness Tester |
| Impact resistance | Impact test |
| color | Colorimeter |
Detection method
The following is a detailed description of the detection methods for the common performance indicators of the above-mentioned alkyd resins:
Viscosity detection: measure the viscosity of the alkyd resin solution with a viscometer. When testing, the sample needs to be dissolved in an appropriate solvent, and operated according to the operating instructions, and finally read the viscosity value.
Density test: measure the density of the alkyd resin sample by a densitometer. After the sample needs to be fully stirred and degassed, it is poured into the measuring tube of the density meter for reading.
Solid content detection: use heat drying method to measure the solid content in alkyd resin. The sample is heated to a certain temperature to completely evaporate the volatile matter, and then the sample is weighed to calculate the solid content.
Drying time test: The drying time of alkyd resin coatings is measured by Drying Oven. Apply the sample to the test panel, then place it in the Drying Oven, and observe the drying time.
Chemical corrosion resistance testing: Corrosion tests are used to evaluate the chemical corrosion resistance of alkyd resins. Soak the sample in different chemical reagents, and then detect the changes in its weight, appearance and other properties.
Water resistance test: Water immersion test is used to evaluate the water resistance of alkyd resin. Soak the sample in water for a certain period of time, and then detect its weight, appearance and other performance changes.
Temperature resistance test: use thermal stability test to evaluate the temperature resistance of alkyd resin. The sample is heated to a certain temperature for a period of time, and then its appearance, weight and other performance changes are detected.
UV resistance test: UV aging test is used to evaluate the UV resistance of alkyd resin. The sample is exposed to ultraviolet radiation for a certain period of time, and then its appearance, color difference and other performance changes are detected.
Abrasion resistance test: Abrasion test is used to evaluate the wear resistance of alkyd resin. After the sample has been worn for a certain number of times,
Detect its weight, appearance and other performance changes.
Weather resistance test: weather aging test is used to evaluate the weather resistance of alkyd resin. Expose the sample to specific weather conditions for a certain period of time, and then detect its appearance, color difference and other performance changes.
Adhesion Testing: The peel test was used to evaluate the adhesion of alkyd resins. The sample is coated on the test plate, and then peeled off by stretching and other methods, and finally evaluates the adhesion index.
Tensile strength and elongation at break testing: Tensile tests are used to evaluate the tensile properties of alkyd resins. The sample is made into a certain sample and tested on a Tensile Testing Machine to finally obtain indicators such as tensile strength and elongation at break.
Hardness testing: Use a durometer to measure the hardness of the alkyd resin. The sample is made into a sample according to the specified size, tested on a Hardness Tester, and finally the hardness value is obtained.
Impact resistance test: The impact test is used to evaluate the impact resistance of alkyd resin. The sample is made into a certain sample, tested on the impact testing machine, and finally evaluates the impact resistance performance index.
Color detection: Use a Colorimeter to measure the color value of the alkyd resin. The sample is painted on the test panel, and its color value is measured with a Colorimeter.
In short, for materials such as alkyd resin, various testing methods are required to comprehensively evaluate its various properties to ensure that it meets relevant quality standards and application requirements.
