High-quality alkali-resistant glass yarn has three main indicators, namely alkali resistance, tensile strength, and breaking strain. The most important one is alkali resistance. Because in the case of poor alkali resistance, no matter how high the tensile strength is, the strength will drop rapidly in the concrete and it will not be able to resist cracking. The alkali resistance of the Fiber Glass is mainly achieved by the composition of the Fiber Glass yarn and the alkali resistance of the coating glue. However, the quality of alkali-resistant Fiber Glass fabrics currently on the market varies from good to bad, and the phenomenon of fake and inferior products is worrying.
1.
Glass Fiber yarns drawn out from clay crucibles using recycled high-alkali cullet glass. This yarn has low strength and no alkali resistance, and is prohibited from production by the state;
2. It is pulled out of broken glass balls on a clay crucible. This yarn is very brittle, and the thickness of the single fibers varies greatly, so the strength cannot be guaranteed;
3. During the twisting process, the above two yarns or clay yarn and high-quality platinum yarn are mixed, making it difficult for Fiber Glass manufacturers and ordinary consumers to distinguish. However, differences in Fiber Glass fabrics produced from high-quality yarns and inferior yarns can be seen once the alkali resistance test is carried out, and the alkali resistance of inferior products is basically not up to standard.
(1) The market price of the worst fiberglass glass yarn is usually around 1.00 yuan to 1.60 yuan. The production process is clay crucible drawing, and the fiberglass fiber is usually made from waste glass such as beer bottles. It is a production process prohibited by the state, and the surface coating is not an alkali-resistant emulsion. From an intuitive point of view: the workmanship is relatively rough, generally sold in large quantities in the market, often lacks length, is easy to shift, and is easy to puncture the skin. This kind of glass yarn is used in layers with insufficient thermal insulation weight and weak joints. It usually loses its strength after two months. If the mortar is knocked out and the glass yarn is taken out, the fiberglass yarn will turn into powder with just a slight grinding. shape.
(2) There is another kind called imitation platinum fiberglass Fiber Glass, but it is difficult to judge when it is used. The glass used is broken glass, also called mixed yarn. This is a better imitation, usually some flat glass fibers with good transparency. The fiber diameter is relatively thin. Authenticity, but its quality cannot meet the requirements of having a real alkali-resistant glass yarn in appearance for exterior wall insulation.
(3) Standard and good quality glass yarn has good alkali resistance regardless of the material selection. The excellence is the alkali resistance of the coating used and the high warp and weft tensile strength. They are all made of platinum and the weaving process is coated with emulsion and have glass fiber as the base material. The product has good hand feel and good construction conformity, and can greatly reduce the amount of plastering mortar.
Chongqing Qingtao Fiberglass Products Co., Ltd.
