Anti-radiation interlayer pipeline and preparation method thereof

A radiation protection and pipeline technology, applied in pipeline protection, chemical instruments and methods, pipeline damage/wear prevention, etc., can solve the problems of cumbersome operation, poor impact resistance, length limitation, etc., to improve the preparation quality, improve the mechanical strength, The effect of increasing safety

Active Publication Date: 2017-09-22
程俊华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inorganic material pipelines have good corrosion resistance and good weather resistance. Moreover, adding elements such as lead and barium in the process of preparing pipelines can make the material have a certain radiation resistance. However, inorganic materials are brittle materials, and glass with lead and barium added It is a typical brittle material, with poor impact resistance and poor safety, which limits the application of inorganic material pipelines in nuclear power plants and other transportation involving radioactive and/or corrosive liquids, gases and dust; theoretically, in the process of preparing plastic pipes and FRP pipes It is also possible to add lead and barium components that have shielding ability to radioactivity, but a large number of tests show that there are often contradictions between the shielding performance of the material and its resistance to medium pressure, mechanical strength, processing performance, etc., which limits its application and development, and its resistance Corrosion performance is far from that of inorganic materials
[0004] In order to reduce the joints connecting engineering pipelines, the transmission pipeline has to meet the specification requirements of a certain length, but the existing technology and equipment for preparing laminated flat glass have strict restrictions on t

Method used

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  • Anti-radiation interlayer pipeline and preparation method thereof
  • Anti-radiation interlayer pipeline and preparation method thereof

Examples

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preparation example Construction

[0057] A preparation method for a radiation-proof sandwich pipe, comprising the steps of:

[0058] 1) Add polymer monomers into the reactor, and according to the bonding strength to the intermediate layer, shielding performance (such as lead equivalent), impact resistance, elastic modulus, dimensional stability and apparent viscosity and flow of the slurry According to the requirements of material performance and process performance, such as diluent, initiator, coupling agent, etc.; initiate polymerization and control the conversion rate of monomer; add radioactive shielding function treated with or without coupling agent under high-speed stirring Powder and / or inorganic modified powder treated with or without coupling agent, the mass ratio of prepolymer: (radioactive functional powder + inorganic modified powder) is 1.0:0.5~4.0, wherein, shielding The mass ratio of the radioactive functional powder to the inorganic modified powder is 5.0:0-4.0. Carry out vacuum degassing the...

example 1

[0072] A preparation method for a radiation-proof sandwich pipe, comprising the steps of:

[0073] Step 1) Add a certain amount of additives such as polyvinyl alcohol (PVA), n-butyraldehyde, diluent, initiator, coupling agent, curing agent, etc. to the reactor, condense under the action of acid catalysis and control the conversion rate of monomer Add nano-lead powder and boric acid powder through or without coupling agent under high-speed stirring, prepolymer: (nano-lead powder+boric acid) mass ratio is 1.0:4.0, wherein, the mass ratio of nano-lead powder and boric acid The ratio is 5.0:0.5; then carry out vacuum degassing to obtain slurry;

[0074] Step 2) washing and drying the first-diameter pipe 7 made of borosilicate glass with different diameters and the second-diameter pipe 8 made of borosilicate glass with cleaning agent solution and water;

[0075] Step 3) nesting the first diameter pipe 7 and the second diameter pipe 8 together to form a set of nested pipes;

[007...

example 2

[0082] A preparation method for a radiation-proof sandwich pipe, comprising the steps of:

[0083] Step 1) First add methyl acrylate, dibutyl ester, benzoic acid, silane, benzoyl peroxide, azobisisobutyronitrile, dibutyl phthalate and methacrylic acid in the reaction kettle according to the weight ratio and other additives to initiate polymerization and control the conversion rate of the monomer; add barium sulfate + titanium oxide treated with or without coupling agent under high-speed stirring, and select the prepolymer: (barium sulfate + titanium oxide) with a mass ratio of 1.0 : 0.5, wherein, the mass ratio of nano-lead powder and boric acid is 5.0: 0.5; then carry out vacuum degassing to obtain slurry;

[0084] Step 2) Rinse and dry lithium-aluminosilicate glass-ceramic pipes of different diameters, and / or borosilicate glass or silicate glass pipes with cleaning agent solution and water;

[0085] Step 3) nesting the first diameter pipe 7 and the second diameter pipe 8 to...

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Abstract

The invention discloses an anti-radiation interlayer pipeline, and belongs to the technical fields of radiation protection and pipeline conveying. The anti-radiation interlayer pipeline comprises a first diameter pipeline and a second diameter pipeline which are different in diameter, wherein the second diameter pipeline sleeves the first diameter pipeline to form an interlayer pipeline; a center hole is formed in the first diameter pipeline; an interlayer is formed between the first diameter pipeline and the second diameter pipeline; the interlayer is filled with slurry which is cured to form a polymer intermediate layer; the slurry is prepared from a pre-polymer, shielding radioactive functional powder and inorganic modified powder; the mass ratio of the total mass of the shielding radioactive functional powder and the inorganic modified powder to the mass of the pre-polymer is (0.5 to 4.0) : 1.0. In a process of preparing the slurry, the shielding radioactive functional powder and the inorganic modified powder are added; a preparation method has the advantages of simple process, easy popularization and application and very high practicability.

Description

technical field [0001] The invention belongs to the technical field of radiation protection and pipeline transportation, and in particular relates to a radiation-proof interlayer pipeline and a preparation method thereof. Background technique [0002] The nuclear industry involves a variety of radioactive levels and / or corrosive liquids, off-gases and dusts, process transport issues between separation, incineration, solidification, dust control, etc. For example, nuclear waste liquid is not only radioactive with strong energy and penetrating ability, but also corrosive, which puts forward requirements for pipelines such as corrosion resistance, radiation protection, impact resistance and long life, especially high requirements for radiation protection. Except for titanium steel, most metal pipes are not corrosion-resistant. The service life of stainless steel pipes is generally only 5 years, and that of carbon steel is 2 years or even shorter; the corrosion resistance of pla...

Claims

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Application Information

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IPC IPC(8): C08L29/14C08L33/08C08L75/06C08L51/08C08K9/00C08K3/08C08K3/38C08K3/30C08K3/22C08F8/28C08F220/14C08F220/06C08F283/01C08F230/08B32B37/02B32B1/06B32B1/08G21F1/02F16L9/18F16L57/02
Inventor 程俊华
Owner 程俊华
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