Optical fiber coating is a special coating applied in the field of optical fiber communication. Its main function is to protect and enhance the mechanical strength and optical performance of optical fiber, reduce the loss and failure rate of optical fiber, and improve the reliability and stability of optical fiber communication. Optical fiber coating is usually a kind of polymer material, which can be formulated and customized according to different application scenarios and requirements. During the optical fiber manufacturing process, the optical fiber coating is coated on the surface of the optical fiber. After high-temperature drying and curing, a hard, smooth, wear-resistant and corrosion-resistant protective film is formed, which makes the optical fiber have better mechanical properties such as tensile resistance, compression resistance, and bending resistance, and can effectively reduce the loss of optical fiber transmission signals.
Detection performance
The following are the performance parameters that need to be tested for optical fiber coatings and their brief descriptions are as follows:
| performance parameter | A brief description |
|---|---|
| tensile properties | Adhesion of coating to fiber surface and failure strength of coating under tensile force |
| Wear resistance | Coating durability and degree of wear under friction and wear conditions |
| optical properties | Effect of coating on optical signal transmission, such as light transmission, refractive index, etc. |
| Corrosion resistance | Corrosion resistance of the coating in chemical media such as acid and alkali |
| thermal stability | Stability and thermal decomposition characteristics of coatings in high temperature environment |
| Viscosity and Flow Properties | The viscosity and flow properties of the paint have a significant impact on the uniformity and surface quality of the coating |
| Storage stability | Stability and quality retention of coatings in long-term storage |
Detection method
The following is a detailed description of the test methods for the performance parameters that need to be tested for optical fiber coatings:
Tensile resistance: Use a tensile Tester to perform a tensile test to measure the failure strength of the coating under tensile force, or use a peel Tester to measure the adhesion strength of the coating to the surface of the optical fiber.
Abrasion resistance: Use an abrasion Tester to conduct abrasion tests to simulate the durability and degree of abrasion of the coating under different abrasion conditions.
Optical properties: Use spectrometers, microscopes and other equipment to measure the optical parameters of the coating such as light transmittance, reflectivity, and refractive index, and evaluate the impact of the coating on optical signal transmission.
Corrosion resistance: Use salt spray test, corrosion test and other methods to simulate the corrosion resistance of the coating in different acid and alkali environments.
Thermal stability performance: Use a thermogravimetric analyzer to measure the thermal stability and thermal decomposition characteristics of the coating in a high temperature environment.
Viscosity and flow properties: Use viscometers, rheometers and other equipment to measure the viscosity and rheological properties of coatings to evaluate the fluidity and uniformity of coatings.
Storage stability performance: Carry out storage stability tests on coatings to evaluate the stability and quality retention of coatings in long-term storage.
Beichao reminds you: Different performance parameters may require different testing methods and equipment, and there may be some industry standards and specifications. For the performance testing of optical fiber coatings, the corresponding testing methods and standards should be selected according to actual needs. At the same time, in order to ensure the accuracy and reliability of the test, it is necessary to strictly control the test conditions and standardize the operation during the experiment.
