How to evaluate the temperature resistance of TPE raw materials?

TPE raw materials are widely used in our daily life. They have excellent softness and anti-slip properties. Therefore, they are compounded with pp, abs, PS, PA, and other materials for injection molding, encapsulation and injection molding to improve the comfort of the product. However, in practical applications, the temperature resistance of TPE raw materials often becomes a key factor restricting its scope of use. The temperature resistance of TPE raw materials refers to its ability to maintain physical and mechanical properties under high temperature conditions. This includes the stability of the hardness, strength, elasticity and other properties of the material at high temperatures. So how to evaluate the temperature resistance of TPE raw materials? Next, the editor of Shenzhen Zhongsuwang TPE will give you a detailed introduction to this issue.

The methods for evaluating the temperature resistance of TPE raw materials are as follows:

1. Thermogravimetric analysis (TGA)

Principle: By measuring the mass loss of the material at different temperatures, its thermal stability is evaluated.

Application: TGA can reveal the decomposition temperature of TPE raw materials at high temperatures, thereby judging its temperature resistance.

‌Notes‌: Test conditions (such as heating rate, atmosphere, etc.) have a great influence on the results, and appropriate test conditions need to be selected according to actual needs.

2. Heat Deformation Temperature Test (HDT)‌

Principle‌: Under a specific load, measure the temperature at which the material undergoes obvious deformation when heated to a certain temperature.

Application‌: HDT is one of the important indicators for evaluating the high temperature resistance of TPE raw materials, and is usually used to compare the temperature resistance of different materials.

Notes‌: Test load and heating rate have an impact on the results, and appropriate test conditions need to be selected according to the actual application scenario.

3. Thermal Aging Test‌

Principle‌: Place the material in a high temperature environment, simulate the aging during long-term use, and evaluate its performance changes.

Application‌: Thermal aging test can reveal the long-term stability of TPE raw materials at high temperatures, which is of great significance for predicting the service life of the material.

Notes‌: The test time and temperature need to be set according to the actual application scenario to ensure the accuracy of the test results. 4. Practical application test

Principle: Make TPE raw materials into actual products, test them in simulated or real high temperature environments, and evaluate their performance.

Application: This is the most direct and reliable evaluation method, which can truly reflect the temperature resistance of the material in actual applications.

Precautions: The test environment and conditions must be as consistent as possible with the actual application scenarios to ensure the practicality of the test results.

In summary, the temperature resistance of TPE raw materials is one of the important indicators for evaluating its applicability. Through methods such as thermal gravimetric analysis, heat deformation temperature test, thermal aging test, and actual application test, the temperature resistance of TPE raw materials can be comprehensively evaluated. When selecting suitable TPE raw materials, factors such as application scenarios, performance requirements, and cost-effectiveness need to be considered comprehensively.