A high-strength peelable film for radioactive decontamination, its preparation method and application

Abstract

The invention discloses a radioactive dirt-removing high-strength strippable film as well as a preparation method and application thereof. The invention aims to solve the problems that the existing stripping type pressing dirt removing agent is mainly applied to pressing and removal of large-area radioactive fallout materials and has certain limitation on removal of loose pollution. The radioactive dirt-removing high-strength strippable film is prepared from the following raw materials in percentage by weight: 50 to 70 percent of polyisoprene, 0.3 to 3 percent of sulfur, 0.25 to 3 percent of nanometer white carbon black, 0.3 to 2 percent of an accelerant ZDC, 0.5 to 2 percent of an anti-ageing agent, 0.1 to 1 percent of zinc oxide, 0.05 to 1.0 percent of casein, 0.5 to 2 percent of EDTA, 0.02 to 0.5 percent of a dispersing agent BX, 20 to 40 percent of water and the like. The polyisoprene base material is subjected to vulcanization modification and is compounded with other components to obtain the radioactive dirt-removing high-strength strippable film, and the defects that the original strippable film has insufficient strength and is not liable to strip are effectively overcome. Through actual verification, the strippable dirt-removing agent has high film-forming strength and the tensile strength can reach 110 kg / cm<2>; and furthermore, in actual application, the surface pollution can be removed to below the clearance level (less than 0.08 Bq / cm<2>), and remarkable progressive significance is achieved.

Description

technical field [0001] The invention relates to the field of chemistry, especially the field of chemical decontamination, and specifically relates to a radioactive decontamination high-strength peelable film, its preparation method and application. Background technique [0002] The decommissioning work of nuclear facilities at home and abroad shows that decontamination plays a considerable role in the decommissioning of nuclear facilities. It can not only reduce the occupational exposure dose in decommissioning operations, reduce the protection costs of decommissioning operations, but also greatly reduce the risk of radioactive waste. The amount of production can be realized to realize the recovery and reuse of decontaminated materials, thereby reducing the cost of subsequent treatment, transportation, storage and disposal. [0003] Because the strippable film radioactive decontamination agent has the characteristics of less secondary waste, no cross-contamination, suitable ...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a radioactive decontamination agent that is mainly used for the suppression and removal of large-area radioactive fallout and the removal of loose contamination and has certain limitations. Decontamination high-strength peelable film, its preparation method and application

Images