Thermal performance testing of polymer materials

Date：2023-08-17 14:50:00Views：268

Polymer materials are an important class of engineering materials, widely used in fields such as automobiles, electronics, architecture, and aviation. Materials are divided into three categories: metallic materials, organic materials, and inorganic non-metallic materials. The vast majority of organic materials are polymer materials, which are classified according to their characteristics into plastics, rubber, fibers, adhesives, and coatings. Thermal performance is one of the important properties of polymer materials, which has a significant impact on the processing, use, and performance of polymer materials. This article summarizes some materials and hopes to provide valuable references for readers.

The thermal performance testing of polymer materials usually includes the following aspects:

1、 Melt flow rate

1. Introduction: Melt flow rate is an important reference for selecting plastic processing materials and grades, which can better adapt the selected raw materials to the requirements of the processing process and improve the reliability and quality of the product in terms of molding. The melt flow rate is generally divided into mass and volume flow rates.

2. Common testing standards: ISO 1133-1, GB/T 3682, JIS-K-7210, ASTM D1238.

2、 Thermal deformation temperature

1. Introduction: Whether plastics are heat-resistant is an important and most commonly used indicator.

2. Common testing standards: ASTM D648, ISO 75-2, GB/T 1634.2, GB/T 17748, ASTM D1784.

3、 Vicat softening point

1. Introduction: Another commonly used indicator of whether plastics are heat-resistant.

2. Common testing standards: ASTM D1525, ISO 306, GB/T 1633, IEC 60065, GB/T 8802, ISO 2507.1, ISO 2507.2.

4、 Melting point

Introduction: Only crystalline materials have a melting point, such as PE, PP, etc., which can generally be obtained using DSC; At the same time, the following parameters can be obtained: endothermic peak value, initial melting temperature, and endothermic peak area.

5、 Glass transition temperature

1. Introduction: It can be tested using DMA and DSC.

2. Frequently tested standard: ISO 11359-2.

6、 Thermogravimetric analysis

1. Introduction: Measuring the relationship between sample quality and temperature changes at a certain heating rate can be used to study the thermal stability and composition of materials. TGA is a commonly used detection method in research and development and quality control.

2. Common testing standards: ASTM E1131, ASTM D6370, ISO 9924-1, GB/T 14837.1, ISO 9924-2, GB/T 14837.2, ISO 9924-3.

The thermal performance testing process of polymer materials includes the following steps:

Select appropriate thermal performance testing methods, such as differential scanning calorimetry, dilatometer method, etc.

Prepare test samples and equipment according to the requirements of the testing method.

Conduct testing and record test data.

Analyze the test data to obtain the thermal performance parameters of the sample, such as glass transition temperature, crystallization transition temperature, melting point, etc.

Write a test report and provide an evaluation of the thermal performance of the sample.

The above is the content related to the thermal performance testing of polymer materials organized by Chuangxin Testing, hoping to be helpful to you. Our company has a team of professional engineers and industry elites, with three standardized laboratories covering an area of over 1800 square meters. We can undertake various testing projects such as electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, functional testing, factory incoming material inspection, and tape weaving.