Novel flexible lead-radiation-free protective clothing

[0009] The present invention will be further explained below in combination with specific embodiments, but the protection scope of the present invention is not limited.

[0010] A new type of flexible lead-free radiation protective clothing. The surface of the protective clothing is provided with a protective layer. The protective layer is made of a matrix material and a filling cylinder mixing process and a calendering process. The matrix material includes a silane coupling agent and an antioxidant. Agent, polyvinyl alcohol, rubber softening oil, dioctyl resin, polyethylene rubber prepolymer, the filler includes tantalum powder, tungsten powder, iron powder, platinum powder.

[0011] The fillers are modified, dried, and ground in sequence. The grinded tantalum powder has a particle size of 4 to 5um; tungsten powder has a particle size of 4 to 5um; iron powder has a particle size of 1 to 5um; and platinum powder has a particle size of 1 to 5um. The base material is made into a base after annealing to release the internal stress of the material, and the base is modified; the protective layer undergoes appearance inspection, density, hardness inspection, strength inspection, and shielding performance inspection.

[0012] The matrix material used in the present invention is specifically silane coupling agent KH-550, antioxidant 1010, polyvinyl alcohol, rubber softening oil 10#, dioctyl ester, and SFHT polyethylene rubber prepolymer. Electronic scales are used for accurate weighing, beakers, measuring cylinders, mixing barrels, droppers, glass rods are used for mixing, vacuum stirrer, heating magnetic stirrer are used for mixing, and ovens, blast drying ovens, and vacuum drying are used. The oven is dried, and the ball mill is used for grinding.

[0013] Mixing is the process of mixing raw rubber or plasticized raw rubber and compounding agents into a rubber compound with a rubber mixer. Mixing refers to the need to improve the physical and mechanical properties of rubber products, improve processing and molding processes, and reduce production costs. Various compounding agents are added to raw rubber or plastic rubber, such as fillers, reinforcing agents, accelerators, vulcanizing agents, anti-aging agents, anti-scorching agents, etc. These compounding agents include solid, liquid and other materials. The compounding agent is evenly dispersed to ensure the consistency of the rubber compound. Therefore, the process of uniformly dispersing various compounding agents into the raw rubber or plasticized rubber on the rubber mixing machine is called mixing. The mixing process includes four stages: mixing, dispersing, mixing, and plasticizing. The raw rubber or plastic rubber is subjected to shearing and stretching in the rubber mixing machine to produce rheology, fracture, and fragmentation, and fully contact with the compounding agent to mix it in. This process is called the wetting stage or the powder-eating stage. Under the action of mechanical force, the compounding agent mixed with rubber is further broken into fine particles of small size, while increasing the contact surface area and further improving the mixing uniformity. So it is also called micro-dispersion. The process of uniform distribution of various compounding agents in the raw rubber or plasticized rubber. The so-called mixing refers to only increasing the uniformity of the compounding agent distribution in the rubber compound without changing the size of its particles. Therefore, this process is also called macro-dispersion or simple mixing. The rubber molecules continue to break under the action of mechanical force and chemical force to reduce the viscosity and achieve uniform mixing. These processes are not performed in isolation, but at the same time. The present invention applies the mixing process of rubber, and adopts the calendering process to form and press the mixed material to increase the density.

[0014] And with mass production requirements as the goal, improve the existing small-batch trial-manufacturing process, upgrade the quality problem solving mechanism, and realize the successful transformation of new radiation protection materials from small-batch trial production in the laboratory to mass production in the workshop. Establish a production process control mechanism, form a standardized processing system, strictly implement related processes and quality control documents, and improve product consistency, reliability and yield.

[0015] Taking into account the deficiencies of lead shielding materials in terms of shielding effect and safety, this product design uses non-toxic and environmentally friendly W, Bi, Ba, Ta and other simple substances or alloy powders as functional fillers to achieve lead-free gamma-ray protection. At the same time, based on the coordinated radiation protection of W, Bi, Ba, Ta and other functional elements, the Monte Carlo particle transport calculation is used as the basic method, combined with the genetic algorithm, and the corresponding functional group allocation ratio and function are designed for different complex radiation fields. The amount of filler added to achieve the best protection effect.

[0016] The invention adopts innovative new material design schemes, combined with advanced processing technology, to produce environmentally friendly non-toxic flexible shielding composite materials with good radiation protection performance, light weight, long service life and excellent flexibility, and the specific issues are as follows Some key technologies: functional element γ-ray collaborative shielding technology for complex radiation fields; flexible polymer material synthesis technology; flexible polymer material and functional filler powder mixing technology; radiation protection material curing and film processing technology; radiation protection material Roll coating composite technology with a variety of functional fiber cloth.

[0017] For those skilled in the art, it is obvious that the present invention is not limited to the details of the foregoing exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the foregoing description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of is included in the present invention, and any signs in the claims should not be regarded as limiting the involved claims.

[0018] In addition, it should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only contains an independent technical solution. This narration in the specification is only for clarity, and those skilled in the art should regard the specification as a whole The technical solutions in the embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.