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Leadless radiation-proof organic glass and preparation method thereof

A plexiglass, radiation protection technology, applied in shielding, nuclear engineering, reactors, etc., can solve problems such as environmental pollution, lead harms human health, etc.

Active Publication Date: 2014-07-16
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the lead contained in it endangers human health and causes environmental pollution

Method used

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  • Leadless radiation-proof organic glass and preparation method thereof
  • Leadless radiation-proof organic glass and preparation method thereof
  • Leadless radiation-proof organic glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] Preparation of rare earth salts:

[0024] 1. Samarium methacrylate (Sm (MAA) 3 ) preparation

[0025] (1) Sm(OH) 3 Synthesis

[0026] Measure 48mL of concentrated HCl into a 250mL beaker, add 100mL of deionized water to dilute, place on a heating stirrer and heat to about 50°C while stirring, and 27gSm 2 o 3 (Ganzhou Ansheng Inorganic Materials Service Center) Slowly add to the beaker, stir until the solution is colorless and transparent, stop heating, filter the solution to remove insoluble impurities, then slowly add ammonia water, a large amount of precipitation gradually appears, adjust the pH to 8. Suction filtration, washing, and suction filtration of the product were repeated three times until the ammonia smell disappeared, and the precipitate was dried at 110°C to a constant mass to obtain a block of Sm(OH) 3 , take out the dry matter, pulverize it with a high-speed pulverizer, and obtain powdered Sm(OH) 3 .

[0027] (2) Sm(MAA) 3 Synthesis

[0028] Put...

Embodiment 1

[0035] (1) Pre-polymerization: First, add samarium methacrylate to the mixture of octanoic acid and propylene glycol for mixing, and stir evenly to obtain a mixture of samarium methacrylate; then add samarium methacrylate mixture, azobisisobutyronitrile Add dibutyl phthalate into methyl methacrylate and stir evenly to form a polymerization solution, and react in a water bath at 70°C for 1 hour to obtain a prepolymer;

[0036] (2) Polymerization molding: first pour the prepolymer obtained in step 1 into the mold, then put the mold containing the prepolymer into a 45°C oven and keep it warm for 8 hours, then raise the oven temperature to 90°C Keep it warm for 2 hours, then let it cool down to room temperature naturally, and demould to get the finished product of plexiglass.

[0037] The amount of each component is shown in Table 1, and the test results of light transmittance and shielding property of the prepared plexiglass finished product are shown in Table 1.

Embodiment 2

[0039] (1) Pre-polymerization: First, add samarium methacrylate to the mixture of caprylic acid and propylene glycol for mixing, and stir evenly to obtain a mixture of samarium methacrylate; then add samarium methacrylate mixture, azobisisoheptanonitrile Add dioctyl sebacate into methyl methacrylate and stir evenly to form a polymerization solution, and react in a water bath at 80°C for 0.5 hours to obtain a prepolymer;

[0040] (2) Polymerization molding: first pour the prepolymer obtained in step 1 into the mold, then put the mold containing the prepolymer into a 60°C oven and keep it warm for 5 hours, then raise the oven temperature to 100°C Keep it warm for 4 hours, then let it cool down to room temperature naturally, and demould to get the finished product of organic glass.

[0041] The amount of each component is shown in Table 1, and the test results of light transmittance and shielding property of the prepared plexiglass finished product are shown in Table 1.

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Abstract

A lead-free anti-radiation organic glass and a preparation method thereof. The organic glass is formed by dissolving an organic rare earth salt in caprylic acid and propylene glycol, and then co-polymerizing with methyl methacrylate and a plasticizer under the action of an initiator. The plexiglass prepared by the method not only maintains good light transmittance, but also can effectively reduce radiation and avoid lead pollution.

Description

technical field [0001] The invention relates to an organic glass and a preparation method thereof, in particular to a lead-free anti-radiation organic glass and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, the use of various rays is becoming more and more extensive, and various radiations are flooding our lives. Radiation has caused certain damage to the human body and seriously affected people's health. Radiation can be protected to reduce the impact on our body and life. Radiation protection is mainly to reduce the impact of radiation by absorbing or dissipating part of the radiation energy. Glass is widely used, and glass with radiation protection function, especially plexiglass, plays an extremely important role in life. At present, the anti-radiation plexiglass on the market mainly adds lead as a filler in the production process to absorb and dissipate radiation energy. However, with the advancement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/06C08F2/02C08F2/44C08K5/12C08K5/521C08K5/11G21F1/10
Inventor 陈倩李莉刘强马芳武丁勇赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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