Cast agent for blood vessel of no-solvent type epoxy resin

Abstract

Solvent-free epoxy resin blood vessel casting agent, its composition is as follows: 100 parts of E-52D epoxy resin; 12-20 parts of curing agent diethylenetriamine; 10-20 parts of plasticizer tributyl phosphate; softener 8-10 parts of tetrachloroethylene; 0.3 part of coloring agent, the above raw materials are uniformly mixed in proportion before the blood vessel is cast. The viscosity of the E-52D type epoxy resin is 1.1-1.4 Pa.s. The colorant can be red oil paint. The invention has simple process and easy operation, and the viscosity of the system remains unchanged within two to three hours after mixing, so as to ensure the smooth completion of the casting operation; and complete curing can be achieved within 24 hours, thereby ensuring the timely formation of blood vessels after casting. . Since it does not contain volatile solvents, there is no need for secondary injection, and it will not cause the occurrence of cavitation and deformation of the cast blood vessels. The casting sample of this formula is easy to slice and is especially suitable for the scanning and production of three-dimensional images of blood vessels.

Description

technical field [0001] The invention relates to a solvent-free epoxy resin blood vessel casting agent. Background technique [0002] Vascular casting is a specialized technique in the production of anatomical specimens, which is widely used in the production of vascular and venous models of various animals and human organs. It has high application value in medical teaching and scientific research and microvicker research. In recent years, with the continuous strengthening of the application of computers in medicine, it has gradually become an important method for the study of blood vessels to embedding and slicing casted blood vessels, then scanning them, and synthesizing three-dimensional images of blood vessels and veins by computer. [0003] Commonly used casting agents for vascular casting are mostly formed by solvents such as dental powder, ABS engineering plastics, perchlorethylene and ethyl acetate. However, the currently used dental powder and perchlorethylene itse...

AI Technical Summary

Problems solved by technology

However, because the viscosity of the system is too high and the curing speed is too fast, casting cannot be realized. A certain amount of ethyl acetate solvent must be added for dilution to reduce the viscosity of the system and prolong the curing time.

The volatilization of the solvent will lead to the formation of cavities inside the cast blood vessels, which is difficult to meet the needs of slice scanning when making computer 3D images

At the same time, when the solvent volatilizes, the curing reaction of the system is too intense, which can easily cause deformation of blood vessels, resulting in deviation of the casting mold