FIELD: chemistry.
SUBSTANCE: invention relates to glass fibre, which can be used to reinforce composite materials for the production of windmill blades, pressure vessels, components in the automotive, engineering, aerospace, and the like. The glass fibre composition contains the following oxides, wt %: SiO2 57.5-59.5, Al2O3 17.0-20.0, CaO 11.0-13.5, MgO 8.5-12.5, where the sum of Na2O, K2O, TiO2 is at least 0.1 wt % and Li2O≤ 2.0 wt %. All amounts are expressed in terms of weight % with respect to the total weight of the composition. The temperature difference ΔT, defined as the difference between the temperature T3, at which the composition has a viscosity of 103 poise, and liquidus temperature Tliq, is at least 50°C, wherein Tliq is not more than 1233°C.
EFFECT: combination of good mechanical and thermal properties of fibres with cost-effective processing temperatures of the compositions.
12 cl, 1 tbl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FIBREGLASS COMPOSITION | 2018 |
|
RU2727774C1 |
| FIBRE GLASS FOR REINFORCING ORGANIC AND/OR INORGANIC MATERIALS | 2005 |
|
RU2390507C2 |
| COMPOSITION OF ELECTRONIC PURITY FIBERGLASS, AS WELL AS FIBERGLASS AND ELECTRONIC FABRIC MADE FROM IT | 2019 |
|
RU2774345C1 |
| GLASS FIBRE AND COMPOSITE MATERIALS WITH ORGANIC AND/OR INORGANIC MATRIX, CONTAINING THEREOF | 2009 |
|
RU2502687C2 |
| METHOD OF PRODUCING HIGH-STRENGTH GLASS FIBRE AND ARTICLES MOULDED THEREFROM | 2009 |
|
RU2531950C2 |
| COMPOSITION FOR HIGH-STRENGTH GLASS FIBRES AND FIBRES FORMED FROM SAID COMPOSITION | 2009 |
|
RU2531951C2 |
| MINERAL FIBERS | 2018 |
|
RU2735595C1 |
| GLASS COMPOSITION FOR MOULDING GLASS FIBRE | 2007 |
|
RU2478585C2 |
| COMPOSITION OF ELECTRONIC-GRADE FIBREGLASS, AS WELL AS FIBREGLASS AND ELECTRONIC TEXTILE MADE THEREFROM | 2019 |
|
RU2773878C1 |
| COMPOSITIONS OF GLASS AND FIBRE PRODUCED THEREFROM | 2012 |
|
RU2641808C2 |
