Sifat apa yang harus diuji untuk bahan penguat? Bagaimana cara mendeteksinya?
Bahan pengeras mengacu pada aditif yang dapat meningkatkan ketangguhan material, which is mainly used to improve the impact resistance, toughness and crack resistance of plastics, karet, coatings and other materials, so as to improve the mechanical properties and service life of materials. Toughening agents are usually polymer compounds or inorganic substances with high molecular weight and molecular weight distribution, which can form a uniformly dispersed phase in the material, thus effectively absorbing and dispersing stress, and improving the toughness and impact resistance of the material. Common toughening agents include polyurethane, acrylic copolymer, ethylene-propylene copolymer, calcium silicate, sodium aluminum silicate, dll..
Index of performance
The following are common toughening agents and their properties and indicators that may need to be tested:
| Toughening agent | Performance and metrics that may need to be tested |
|---|---|
| Polyurethane polyurethane | Daya tarik, pemanjangan, impact strength, stabilitas termal, tahan cuaca, tahan korosi |
| Kopolimer akrilat | Suhu deformasi termal, suhu transisi gelas, daya tarik, perpanjangan saat putus, resistensi dampak, tahan cuaca, chemical corrosion resistance |
| Kopolimer etilen-propilena | Kekuatan dampak, flexural modulus, stabilitas termal, daya tarik, perpanjangan saat putus, tahan cuaca, ketahanan terhadap bahan kimia |
| Kalsium silikat | Ukuran partikel, distribusi partikel, luas permukaan tertentu, kekerasan, viskositas, rheological properties, dispersibility |
| Natrium aluminium silikat | Ukuran partikel, distribusi partikel, luas permukaan tertentu, kekerasan, viskositas, rheological properties, penyebaran, stabilitas termal, tahan cuaca |
Sifat apa yang harus diuji untuk bahan penguat? Bagaimana cara mendeteksinya?
Sifat dan indikator yang akan diuji terutama meliputi sifat fisik, peralatan mekanis, sifat termal, tahan cuaca, corrosion resistance and other aspects. Specific test methods and test standards may vary depending on the type of toughener, skenario dan persyaratan aplikasi. Commonly used test methods include tensile test, impact test, analisis termal, analisis partikel, rheological test, dll.. Dalam aplikasi praktis, pemilihan dan penggunaan yang wajar perlu dilakukan sesuai dengan kebutuhan spesifik, and test and control in the production process to ensure product quality.
Metode tes
Specifically how to detect the performance and index of toughening agent, it is necessary to select the corresponding test method and test standard according to different performance and index. Here are a few common testing methods:
Tes keregangan: it can measure the influence of the toughener on the tensile strength, elongation and other properties of the material. The test methods include tensile test and shear test.
Sifat apa yang harus diuji untuk bahan penguat? Bagaimana cara mendeteksinya?
Impact test: It can measure the effect of the toughener on the impact resistance of the material. The test methods include impact test and drop hammer test.
Thermal analysis: It can measure the influence of toughener on the thermal stability, glass transition temperature and other properties of the material. The test methods include thermogravimetric analysis, differential thermal analysis, analisis ekspansi termal, dll..
Analisis partikel: it can measure the particle size, distribusi partikel, specific surface area and other indicators of toughening agent. The test methods include laser granulometer, electron microscope and so on.
Rheological test: It can measure the effect of toughening agent on the rheological properties of materials. The test methods include rotary viscosimeter, penganalisa mekanik dinamis, dll..
When testing the performance of toughener, perlu untuk memilih metode pengujian dan standar pengujian yang sesuai dengan persyaratan spesifik, dan memastikan keakuratan dan keandalan hasil tes.