LEISA Tg Glass Transition Temperature (Tg) Testing Service

Glass transition temperature (Tg) testing service

Service Content

Glass transition temperature (Tg) is one of the important performance parameters of thermosetting resin-based composite materials such as glass fiber reinforced plastics (FRP), reflecting the temperature range at which the material changes from a glassy state to a highly elastic state. Raysa Technology Laboratory provides professional glass transition temperature (Tg) testing services to ensure the stability and performance of the material under the expected use environment.

Testing standards

• According to Appendix C of "SY/T 7043-2016 High-pressure fiberglass pipes for petroleum and natural gas industry".
• According to "API 15HR High-Pressure Fiberglass Line Pipe Specification 2016 Fourth Edition".

Detection method

• Differential Scanning Calorimetry (DSC) was used for detection.

Testing process

1. Sample Receiving and Registration

   • Sample requirements : Customers provide representative material samples with a length of 130 mm ± 2 mm and the edges of both ends of the specimen are polished clean.

   • Cleaning and drying : After ultrasonic cleaning with distilled water, dry at 40℃ for 24 hours.

2. Sample pretreatment

   • Crushing and weighing : Grind the sample into pieces or powder according to the size requirements of the DSC sample container and weigh it accurately.

   • Sampling location : For internally cured pipes, samples should be taken from the outer surface of the pipe within 0 to 0.25 mm; for externally cured pipes, samples should be taken from the inner surface of the pipe within 0 to 0.25 mm.

3. Test preparation

   • DSC Equipment Calibration : Make sure the Differential Scanning Calorimeter (DSC) equipment is in good calibration.

   • Set the heating rate : the maximum heating rate is 40℃/min.

4. Detection execution

   • Scanning process : Scan from room temperature to a temperature at least 30°C higher than the expected glass transition temperature (not exceeding 250°C).

   • Record data : Record the glass transition temperature (Tg) on ​​the DSC curve, which is the midpoint temperature of the offset portion of the DSC curve.

5. data analysis

   • Result confirmation : According to the DSC curve, confirm the glass transition temperature (Tg), and perform necessary repeated tests to ensure the accuracy of the data.

6. Report Preparation

   • Report content : including sample information, test methods, test conditions, DSC curves, glass transition temperature (Tg) data analysis and conclusions.

   • Quality review : Data review and report preparation are performed by professional technicians.

7. Results Feedback

   • Report delivery : The test report will be delivered to the customer in electronic or paper form.

   • Technical consultation : Provide result interpretation and technical consulting services to answer customers’ questions.

service advantage

• Professional equipment : Use high-precision differential scanning calorimeter (DSC) for testing to ensure the accuracy and reliability of the results.

• Technical team : We have an experienced technical team that can provide professional analysis and technical support.

• Quick response : Efficient service process ensures that the test is completed and the report is provided in the shortest time.