Bahan pengeras mengacu pada aditif yang dapat meningkatkan ketangguhan material. It 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, can form uniformly dispersed phase in the material, so as to effectively absorb and disperse stress, improve the toughness and impact resistance of the material. Common toughening agents include polyurethane, acrylate copolymer, ethylene-propylene copolymer, calcium silicate, sodium aluminum silicate, dll..

Sifat apa yang harus diuji untuk bahan pengeras? Bagaimana cara mendeteksinya?

Performance index
The following are common tougheners and their properties and indicators that may need to be tested:

Toughening agent may need to be tested for properties and indicators
Polyurethane tensile strength, pemanjangan, impact strength, stabilitas termal, tahan cuaca, tahan korosi
Acrylate copolymer thermal deformation temperature, suhu transisi gelas, daya tarik, perpanjangan saat putus, resistensi dampak, tahan cuaca, chemical corrosion resistance
Kekuatan dampak, modulus lentur, stabilitas termal, daya tarik, perpanjangan saat putus, weather resistance and chemical corrosion resistance of ethylene – propylene copolymer
Calcium silicate particle size, distribusi partikel, surface area, kekerasan, viskositas, rheological properties, penyebaran
Aluminum sodium silicate particle size, distribusi partikel, surface area, kekerasan, viskositas, sifat reologi, penyebaran, stabilitas termal, tahan cuaca
Sifat dan indikator yang akan diuji terutama meliputi sifat fisik, peralatan mekanis, sifat termal, tahan cuaca, ketahanan terhadap korosi dan sebagainya. Specific testing methods and testing standards may vary depending on the type of toughening agent, skenario dan persyaratan aplikasi. Commonly used testing methods include tensile testing, pengujian dampak, analisis termal, analisis partikel, pengujian sifat reologi, dll.. Dalam aplikasi praktis, reasonable selection and use should be made according to specific requirements, and testing and control should be carried out in the production process to ensure product quality.

Sifat apa yang harus diuji untuk bahan pengeras? Bagaimana cara mendeteksinya?

Metode pengujian
How to test the performance and index of toughening agent, we need to choose the corresponding test method and test standard according to different performance and index. Here are some common test methods:

Tes keregangan: can measure the influence of toughening agent on the tensile strength, elongation and other properties of the material. The test methods include tensile test and shear test.

Impact test: can measure the impact of the toughening agent on the material resistance. The test methods include impact test and drop weight test.

Thermal analysis: can measure the influence of toughening agent on the thermal stability of the material, glass transition temperature and other properties. The test methods include thermogravimetric analysis, differential thermal analysis, analisis ekspansi termal, dll..

Analisis partikel: dapat mengukur ukuran partikel bahan pengeras, distribusi partikel, luas permukaan tertentu dan indikator lainnya. Metode pengujiannya meliputi penganalisis ukuran partikel laser, mikroskop elektron, dll..

Rheological property test: The influence of toughening agent on the rheological property of the material can be measured. Test methods include rotary viscometer, penganalisa mekanik dinamis, dll..

Saat menguji kinerja bahan penguat, perlu untuk memilih metode pengujian dan standar pengujian yang sesuai dengan persyaratan spesifik, dan memastikan keakuratan dan keandalan hasil tes.