Reinforced plastic mortar pipe with improved mortar layer

Abstract

The invention relates to a reinforced plastic mortar pipe with an improved mortar layer. The reinforced plastic mortar pipe comprises the mortar layer consisting of quartz sand and resin, and is characterized in that: the resin is a resin mixture comprising milled glass fibers or whiskers; the weight ratio of the resin to the milled glass fibers or whiskers in the resin mixture is 100:(1-5); and the milled glass fibers have the length-to-diameter ratio of more than 10, and are preferably alkali-free milled glass fibers. The reinforced plastic mortar pipe with the improved mortar layer has the advantages that: the milled glass fibers or whiskers are mixed with the resin, and the mechanical strength of short fibers is equal to the strength of forces between adjacent atoms, so the resin mixture has a highly-oriented structure, strong strength, high modulus, high elongation and electrical, optical, magnetic, dielectric, conducting and superconducting properties, the performance of a resin mixture adhesive is improved, bonding strength between the resin mixture and the quartz sand is strengthened, the using amount of the resin is decreased, and cost is decreased.

Description

technical field [0001] The invention relates to a glass-steel sand-inclusion pipeline, in particular to a glass-steel sand-inclusion pipeline in which the sand-inclusion layer containing quartz sand and resin is improved. Background technique [0002] At present, the sand layer of FRP pipe with sand inclusion is resin mortar layer (a mixture of quartz sand and resin). The function of this layer is to transfer the force of the inner and outer layers of FRP pipe, improve the rigidity of the pipe, and ensure a certain shear strength of the pipe. , to avoid delamination during product flexural performance testing. [0003] Due to the experimental method of shear strength measurement, it is generally characterized by measuring the compressive strength of resin mortar, and the general requirement is not less than 60Mpa. The compressive strength depends mainly on the resin content and the gradation of the quartz sand. If the gradation of the quartz sand is good (that is, the part...

AI Technical Summary

Problems solved by technology

Due to the unstable supply of raw materials, it is difficult to control the mixing and grading process of quartz sand, resulting in poor gradation of quartz sand with different particle sizes, which requires increasing the amount of resin used to meet the strength requirements, thereby increasing the production cost of pipelines