Method for producing glass fiber reinforced plastic anchor pole

Abstract

The invention discloses a method for producing a glass fiber reinforced plastic anchor pole, especially a method for producing a highly torsion-resistant, anti-shearing prestressing glass fiber reinforced plastic anchor pole, comprising the following steps of: mixing unsaturated polyester resin, nanometer mullite, aluminium hydroxide, polyurethane, zine stearate, white carbon black, methylethyl ketone peroxide, TBPB and a mould release agent according to a mass ratio in a resin solution groove with stirring to produce a resin solution, followed by vacuum-pumping and bubble-removing; towing glass fibres from a filament rack, twisting the glass fibres on a twisting support to form a twist of 10-30 degrees by rotating and towing the twisted glass fibres into the resin solution groove for impregnation; towing the twisted and impregnated glass fibres into a cone-shaped sleeve for folding and bundle-forming as well as preforming; finally continuously towing the folded bundles of glass fibres into a hot pressing die, followed by molding at the temperature of 160-180 DEG C. The method provided by the invention is simple, and the anchor pole produced by the invention has high torsion-resistant and anti-shearing performance as well as low cost.

Description

technical field [0001] The invention relates to a production method of a fiberglass anchor rod, in particular to a production method suitable for a high torsion-resistant, shear-resistant prestressed fiberglass anchor rod. Background technique [0002] FRP bolts generally use resin glue as the matrix phase and glass fiber as the reinforcing phase. It is an advanced composite material. It not only has unique and superior properties such as corrosion resistance, light weight, easy cutting without sparks, but also has high Excellent tensile strength and good anchoring performance; it not only helps to improve the reliability and durability of engineering support, but also helps to reduce hidden dangers of accidents and ensure production safety; it can also reduce production costs and improve production efficiency. FRP bolts are widely used in the support of tunnels, roadways and ramps in the construction process of mining, roads, railways, water conservancy, municipal engineeri...

AI Technical Summary

Problems solved by technology

The matrix phase resin glue liquid configured in the traditional FRP bolt production method does not contain components that can make the two phases form an interpenetrating network structure, and cannot effectively solve the problem of wettability combination of the two phase interfaces, and will not be vacuumed and degassed , after curing, there are bubbles and cracks that make the structure not dense enough. The glass fiber used is vertical without twist, and there is not enough pre-tightening force to show uneven tightness and different directions. These all lead to the phenomenon of FRP anchors. The tensile performance of the rod cannot be maximized, and the performance of torsion resistance and shear resistance is insufficient. Therefore, the application of FRP bolts in many construction sites is greatly limited, especially in occasions with high safety performance requirements. use