| Popis: |
The main physico-chemical, thermomechanical and strength characteristics of the epoxy-vinyl-ester polymeric matrixes of the VSV-41 and VSV-43 brands developed at FSUE «VIAM» are considered. It is established that the time of technological viability of these polymeric matrixes in the temperature range of 20–25 °C is 120–130 minutes, which allows them to be processed into products made of polymer composite materials (PCM) of sufficiently large dimensions. Infusion polymeric matrixes of the VSV-41 and VSV-43 brands have similar bending strength indicators, but PCM based on the VSV-43 polymeric matrix have a wider range of operating temperatures. Based on these polymeric matrixes, carbon fiber of the VKU-51 brand, as well as fiberglass of the VPS-58 and VPS-60R brands were developed and certified. In addition, they are used in the manufacture of sheet pilings and supports of arched elements, as well as profiled flooring of structures of a quickly built arch bridge made of composite materials, built in the settlement of Yazykovo in the Ulyanovsk region. |
