Organic grouting material for road and preparation method of organic grouting material for road

Abstract

The invention discloses an organic grouting material for a road and a preparation method of the organic grouting material for the road. The organic grouting material for the road is prepared by foaming black and white polyurethane materials, wherein an epoxy resin-diethanolamine affixture (EP-DEA affixture) is also added into the white polyurethane material, and the addition of the EP-DEA affixture accounts for 5-20wt% of the total mass of the black and white polyurethane materials. The EP-DEA affixture is prepared by using a method comprising the following steps of mixing EP and DEA, and uniformly dispersing in a reaction vessel by taking butanone as a solvent; heating to 70 DEG C, maintaining the temperature and reacting for 4h; and removing the superfluous solvent through reduced-pressure distillation to obtain a slightly-yellow oily liquid, namely the EP-DEA affixture. When the organic grouting material for the road, disclosed by the invention, is used for filling a gap of the road by grouting and solidifying, the adhesive property of solidification filler is better and the compression strength is more approximate to the use requirement on the premise that the grouting performance is not influenced, and therefore, the organic grouting material is an excellent improved product of a pure black / white polyurethane product, which is maximally used at present.

Description

technical field [0001] The invention relates to a functional polymer material, in particular to an organic grouting material for roads and a preparation method thereof. Background technique [0002] Compared with other polymer grouting materials, polyurethane (PU) slurry has low viscosity and can penetrate into tiny gaps in the road base, and reacts with water to firmly bond the mud and sandstone in a humid environment. At the same time, the two-component polyurethane During the mixing reaction process, the volume foaming and expansion will squeeze the road base layer compactly, which is the most suitable polymer grouting material for road maintenance; in the application of road grouting engineering, its foaming and expansion characteristics also bring its own advantages. Inevitable defects, one is insufficient compressive strength of foamed polyurethane, and the other is poor adhesion. [0003] In order to overcome the defects of the material itself, some people add bisphe...

AI Technical Summary

Problems solved by technology

However, the number of hydroxyl groups on the molecular chain of the liquid bisphenol A epoxy resin at room temperature is limited. In the reaction, most of the bisphenol A epoxy resin is only distributed in the polyurethane foaming system in the form of physical filling, and does not participate in other processes. Foaming reaction, the effect of toughening and strengthening is extremely limited

[0004] At the same time, some people use the interpenetrating network polymer formed by epoxy resin modified polyurethane rigid foam to achieve the purpose of strengthening and toughening, but it is actually proved that the formation process of the epoxy resin curing system is after the foaming reaction is completed. Under the catalysis of the catalyst, the ring-opening crosslinking of the epoxy group is carried out, and it does not participate in the foaming reaction; and due to the slower hysteresis of the epoxy resin crosslinking network than the polyurethane network, it also leads to the epoxy ring-opening curing process. It is entangled and hindered by the polyurethane crosslinking network, and the result is that the formation efficiency of the epoxy resin crosslinking network is low, and its improvement on the mechanical properties of polyurethane rigid foam needs to be improved

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