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Method for preparing plumbum containing radiation protection organic glass

A plexiglass, radiation protection technology, applied in shielding, nuclear engineering, reactors, etc., can solve the problems of limited application fields, opacity, complexity, etc., and achieve the effect of simple process and superior performance

Inactive Publication Date: 2008-12-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For many years, relevant industrial departments, medical and scientific research institutions have used lead plates and inorganic lead glass as radiation protection materials, but the lead plates are bulky and opaque, and their application in many fields is limited; while the inorganic lead glass is fragile and the preparation process is complicated. It is expensive and it is difficult to make large-area industrial application materials, so its application fields are also limited

Method used

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  • Method for preparing plumbum containing radiation protection organic glass
  • Method for preparing plumbum containing radiation protection organic glass
  • Method for preparing plumbum containing radiation protection organic glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: according to certain mass ratio, surfactant and co-surfactant are mixed as a component (recorded as SAA '), by oil phase / SAA ' (mass ratio)=24:1,16:1,12 :1, 9:1, 8:2, 7:3, 6:4, 5:5, 4:6, 3:7, 2:8, 1:9, 1:12, 1:16, 1:24 Add the proportion of each colorimetric tube to each colorimetric tube respectively, add water dropwise while stirring at a constant temperature, observe the change of the system from clear to turbid or from turbid to clear due to the addition of water, and record the amount of water added when each change occurs According to the results, a plane pseudo-ternary phase diagram is drawn. On the microemulsion phase diagram, select the MMA / DM mass ratio of 1:4 in the transparent area to determine the following formula. Weigh lead octoate (Pb(OA) 2 ) 1.2g, dissolved in 1.2g methacrylic acid (MA), add 1.0g dodecylphenol polyoxyethylene ether (TX-10) under magnetic stirring, add 0.5g styrene (St), add water 1.5 g, add 0.92g of methyl methacrylate...

Embodiment 2

[0032] Embodiment 2: lead methacrylate (Pb(MA) 2 ) instead of lead octoate. Other operating steps are the same as in Example 1 to obtain a plexiglass plate.

Embodiment 3

[0033] Embodiment 3: according to embodiment 1 co-surfactant dimethylaminoethyl methacrylate (DM) is replaced with hydroxyethyl methacrylate (HEMA) to draw phase diagram, choose MMA / The mass ratio of HEMA is 1:3, and the following formula is determined. Weigh lead octoate (Pb(OA) 2 ) 1.2g, dissolved in 1.2g methacrylic acid (MA), added 0.85g dodecylphenol polyoxyethylene ether (TX-10) under magnetic stirring, added styrene (St) 0.5g, added water 1.43 g, add 1.23g of methyl methacrylate (MMA), add 3.69g of hydroxyethyl methacrylate (HEMA), continue to stir for 10min, then add 0.02g of azobisisobutyronitrile (AIBN), at a constant temperature of 65°C Pre-polymerize in a water tank for 40 minutes, then pour it into a mold, then raise the temperature to 80°C for polymerization for 24 hours, then raise the temperature to 120°C, continue the reaction for 1 hour, and demould to obtain a plexiglass plate.

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PUM

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Abstract

The invention relates to a method for preparing lead-bearing radiation-proof organic glass, belonging to the functional high molecular material polymerization technical field. The method synthesizes organic carboxylic acid lead salt through organic synthesis and modification of inorganic lead salt, adds the organic carboxylic acid lead salt into water-in-oil type microemulsion which consists of methyl methacrylate (MMA), a surfactant, an auxiliary surfactant, water and so on, initiates under the condition of a thermal initiator and polymerizes an organic glass sheet. Moreover, the performance of the organic glass sheet is tested, and the result reveals that the impact strength, the tensile strength, the light transmittance, the refractive index, the glass transition temperature and the radiation-proof property of the organic glass prepared by polymerization of the microemulsion are all superior to those of common organic glass. The invention provides a novel method for synthesizing functional high molecular materials. The method has a simple and convenient technique; the synthesized sheet has superior performance, can make up for the defects of an inorganic radiation-proof glass sheet, and is hopeful to become practical novel radiation-proof materials.

Description

technical field [0001] The invention discloses a preparation method of lead-containing anti-radiation organic glass, which belongs to the technical field of polymerization of functional polymer materials. [0002] The invention relates to a new method for preparing organic lead salt and synthesizing functional polymer materials. [0003] The invention relates to the preparation of a metal salt-containing anti-radiation organic glass by means of microemulsion polymerization. Background technique [0004] With the rapid development of industrial and agricultural production, national defense scientific research, radiation medicine and atomic energy industry, the use of various rays is becoming more and more extensive. When people are using radiation, they are also exposed to the hazards of radiation. Radiation can be protected. The basic principle of radiation protection is to minimize or avoid the exposure of rays entering the human body from the outside. In many cases, the ...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/06C08F2/24C08F2/44C08K5/098G21F1/10
Inventor 蒋平平陈建波林学敏
Owner JIANGNAN UNIV
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