Polyurethane rheological property testing device and method

Abstract

The invention belongs to the technical field of rheological property testing and relates to a polyurethane rheological property testing device. The polyurethane rheological property testing device comprises a base, a rheometer, a mold shell and a shearing plate; a rotating shaft corresponding to the base is arranged at the lower part of the rheometer; the mold shell is arranged on the base; the top of the mold shell is open; the shearing plate is arranged at the lower part of the rotating shaft; the shearing plate is arranged at the top of the mold shell in a matched manner; a sealing unit isarranged between the shearing plate and the side wall of the mold shell; the rotating shaft drives the shearing plate to rotate in the mold shell; the sealing unit is used for sealing the top of the mold shell; and a grouting hole is formed in the mold shell or the shearing plate and is connected with a slurry unit. The invention further discloses a polyurethane rheological property testing method. The density of a material can be controlled by controlling a grouting amount, and meanwhile, the difference between rheological properties of grout formed after grouting and rheological properties of grout formed by stirring and mixing can be tested.

Description

technical field [0001] The invention belongs to the technical field of rheological property testing, and in particular relates to a polyurethane rheological property testing device and method. Background technique [0002] Rheology is mainly to study the viscoelastic response law of materials under external force. For grouting, the rheological properties of materials are the key to the effect of grouting repair. Therefore, a rheometer is usually used to determine the rheological properties of the material, and to adjust the grouting parameters by studying the viscoelasticity of the material under different shear test methods, and then adjust the diffusion range of the grouting material and the post-grouting performance, in order to achieve the purpose of grouting repair. However, for the two-component polyurethane grouting material, the expansion involved in the grouting process is the main feature of its grouting repair. Using the characteristics of rapid reaction, expansi...

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Problems solved by technology

[0004] The purpose of the present invention is to address the above-mentioned problems and deficiencies, and provide a polyurethane rheological performance testing device and method. The application can directly mix materials through grouting, and control the density of materials by controlling the amount of grouting, which solves the problem of difficult The problem of testing polyurethane-like grouting materials. At the same time, it can test the difference between the rheological properties of the grout formed after grouting and the grout formed by stirring and mixing. The equipment is simple and easy to operate.

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