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Ray-shielding organosilicon material and preparation method thereof

An organosilicon and ray technology, applied in the field of ray shielding organosilicon materials and their preparation, can solve the problems of insufficient weather resistance, high and low temperature resistance, etc., and achieve the effects of simple process, good construction performance, and good ray shielding effect.

Inactive Publication Date: 2020-06-30
中科新镧系(厦门)科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, most of the basic polymers used in shielding materials in available patent documents are usually carbon-based compounds such as epoxy, polyurethane, and acrylic acid, and the prepared products often have insufficient performance in weather resistance, high and low temperature resistance, etc.

Method used

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  • Ray-shielding organosilicon material and preparation method thereof

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preparation example Construction

[0022] Based on the same inventive concept, the present invention also discloses a method for preparing a radiation-shielding organosilicon material, which includes the following steps:

[0023] (1) Mix the hydroxyl-terminated polydimethylsiloxane, the reinforcing filler treated with stearic acid and the shielding filler, and keep it for 3 hours at a temperature of 150°C and a vacuum degree of less than -0.98MPa;

[0024] (2) Cool to below 45°C, add a cross-linking agent, and keep for 30 minutes under the condition that the vacuum degree is less than -0.95MPa;

[0025] (3) Add a silane coupling agent and a catalyst, and keep it under the condition that the vacuum degree is less than -0.95MPa for 45 minutes to obtain a radiation-shielding silicone material.

Embodiment 1

[0028] In this embodiment, the raw material and composition of the radiation-shielding organosilicon material are as follows (parts by weight): 100 parts of 107 glue with a viscosity of 800, 6 parts of methyltrimethoxysilane, 100 parts of light calcium carbonate, and 100 parts of lanthanum carbonate , 100 parts of cesium carbonate, 7.6 parts of titanate chelate, and 2.4 parts of silane coupling agent mixture. Among them, the silane coupling agent mixture is a mixture of KH550 and KH560 in a weight ratio of 1:1, and then it can be left to stand at room temperature for 5 days after being sealed; the titanate chelate is propylene glycol acetoacetate chelate, the market regular product.

[0029] The preparation process of this embodiment is as follows:

[0030] After mixing 107 glue, reinforcing filler and shielding material in a power mixer, keep it at 150°C and a vacuum of -0.98MPa for 3 hours; then cool, and when the temperature drops below 45°C, add methyltrimethoxysilane , ...

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Abstract

The invention relates to a ray-shielding organosilicon material composed of the raw materials in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 5 to 200 parts of a reinforcingfiller, 200 to 300 parts of a shielding filler, 3 to 8 parts of a cross-linking agent, 0.1 to 3 parts of a catalyst and 0.1 to 1.5 parts of a silane coupling agent. The ray shielding effect is good,and the operation performance is excellent.

Description

technical field [0001] The invention relates to the technical field of shielding materials, in particular to a radiation-shielding organosilicon material and a preparation method thereof. Background technique [0002] With the development of the nuclear industry, there are more and more scenarios for the application of nuclear materials. In many applications, protective materials are indispensable, and the replacement of protective materials has become an extremely important research topic. For radiation protection such as X and γ, the protective materials used in the early days generally contained lead. With the requirements of environmental protection, it has gradually become a consensus to find more environmentally friendly shielding materials. [0003] At present, most of the base polymers used in shielding materials in available patent documents are usually carbon-based compounds such as epoxy, polyurethane, and acrylic acid. The prepared products often have insufficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K13/06C08K9/04C08K3/26C08K3/22C08K7/26C08K5/5425C08K5/5419C08K5/544C08K5/5435C08K5/5455
CPCC08K3/22C08K3/26C08K5/5419C08K5/5425C08K5/5435C08K5/544C08K5/5455C08K7/26C08K9/04C08K13/06C08K2003/221C08K2003/265C08K2201/014C08L2201/08C08L83/04
Inventor 曾增明兰华雄汤海滨王政
Owner 中科新镧系(厦门)科技有限公司