Preparation method of lead-free ray radiation preventing rubber composite

A composite material and anti-ray technology, which is applied in the field of anti-ray radiation materials, can solve the problems of poor anti-ray radiation effect, difficulty in industrial production, and low filling number of fillers, so as to achieve good interface bonding, simple and feasible operation, and improve interface bonding. Effect

Inactive Publication Date: 2018-09-28
孙海
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  • Description
  • Claims
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Problems solved by technology

[0010] The above-mentioned documents disclose the preparation of lead-free anti-radiation rubber composite materials, which have a certain anti-radiation effect, but the preparation methods of these materials are complicated, difficult for industrialized production, and the cost is high, and the filling number of the filler in the rubber matrix is ​​low ( <40 parts), resulting in poor radiation protection effect

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  • Preparation method of lead-free ray radiation preventing rubber composite

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Effect test

Embodiment 1

[0043] The preparation method of lead-free anti-radiation radiation rubber composite material of the present invention, it comprises the following steps:

[0044] (1) Preparation of radiation shielding absorbing filler slurry:

[0045] 50 parts of 3000 mesh natural barium sulfate, 3 parts of emulsifier OP-10, 1 part of PVP, 0.2 parts of carboxymethyl cellulose, 0.3 parts of polydimethylsiloxane defoamer, 1 part of ammonia water and 44.5 parts of deionized Mixed with water; disperse by 10000r / min high-speed mechanical agitation for 30min; obtain radiation shielding filler slurry stably dispersed in water;

[0046] (2) Emulsion blending steps:

[0047] 40 parts of radiation-shielding filler slurry prepared in step (1) were added to 100 parts of natural rubber latex of rubber (calculated as dry rubber) according to the mass of natural barium sulfate; and mechanically stirred for 30 minutes; a uniform Dispersed natural barium sulfate / natural rubber mixed emulsion;

[0048] (3) ...

Embodiment 2

[0056] The preparation method of lead-free anti-radiation radiation rubber composite material of the present invention, it comprises the following steps:

[0057] (1) Preparation of radiation shielding absorbing filler slurry:

[0058] Mix 50 parts of precipitated barium sulfate, 2 parts of emulsifier sodium dodecylbenzene sulfonate, 1 part of KH550, 0.2 parts of hydroxyethyl cellulose, 0.3 parts of polydimethylsiloxane defoamer, 1 part of ammonia water and 100 parts of deionized water were mixed; and dispersed by 10000r / min high-speed mechanical agitation for 30 minutes; a radiation shielding filler slurry stably dispersed in water was obtained;

[0059] (2) Emulsion blending steps:

[0060] 120 parts of radiation shielding filler slurry prepared in step (1) were added to 100 parts of natural rubber latex of rubber (calculated as dry rubber) according to the mass of barium sulfate by precipitation method; mechanical stirring was carried out for 30 minutes; Dispersed precipi...

Embodiment 3

[0069] The preparation method of lead-free anti-radiation radiation rubber composite material of the present invention, it comprises the following steps:

[0070] (1) Preparation of radiation shielding absorbing filler slurry:

[0071] 50 parts of tungsten carbide with an average particle size of 200nm, 2 parts of emulsifier sodium dodecylbenzene sulfonate, 1 part of PVP, 0.2 part of polyacrylamide, 0.3 part of mineral oil defoamer, 1 part of ammonia water and 200 parts Mix with deionized water; and disperse for 30 minutes through a 1000KW ultrasonic cell disruptor; obtain a radiation shielding filler slurry stably dispersed in water;

[0072] (2) Emulsion blending steps:

[0073] Add 80 parts of radiation shielding filler slurry prepared in step (1) to 100 parts of natural rubber latex of rubber (calculated as dry rubber) according to the mass of tungsten carbide; carry out mechanical stirring for 30 minutes; obtain uniformly dispersed Tungsten carbide / natural rubber hybrid...

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Abstract

The invention relates to a preparation method of a lead-free ray radiation preventing rubber composite. The preparation method comprises the steps: radiation shielding filler slurry preparation; emulsion blending; solidification and demulsification; drying; and vulcanization. Radiation shielding filler is prepared into modified shielding filler slurry stably dispersed into water, and the modifiedshielding filler slurry is mixed with rubber latex, so that not only can the uniform dispersion of the filler in rubber be kept, but also the interface bonding of the filler and the rubber is improved, and the preparation method is simple, convenient and feasible in operation and easy to realize industrialization. By using the preparation method disclosed by the invention, the phenomenon of dispersion nonuniformity caused by demulsification due to direct mixing of the shielding filler and the rubber latex is avoided, and a rubber matrix can be favorably filled with high-concentration shieldingfiller. The high-concentration shielding filler is uniformly dispersed into the rubber and is good in interface bonding, so that the lead-free ray radiation preventing rubber composite has a very high ray radiation shielding effect; and the obvious deterioration of the mechanical properties of the rubber composite filled with the high-concentration shielding filler cannot be caused, so that requirements for performances in actual use can be met.

Description

technical field [0001] The invention belongs to the field of anti-radiation materials, in particular to a preparation method of a lead-free anti-radiation rubber composite material. Background technique [0002] Since Roentgen discovered X-rays, the application of various radioactive rays in national defense, medicine, scientific and technological research, nuclear industry and atomic energy technology has continued to deepen and develop. In particular, the application of X-ray imaging technology in the medical field provides doctors with an indispensable basis for clinical diagnosis, and has become an important part of this field. However, long-term exposure to or passive acceptance of radiation will cause damage to the human body while using radiation to obtain various information that people need. Therefore, it is very necessary to take certain protective measures while making full use of radiation while reducing its harm to the human body. [0003] Traditional ray radi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/215C08L7/00C08K13/06C08K9/04C08K9/06C08K3/30C08K3/14C08K3/22
CPCC08J3/215C08J2307/00C08J2407/00C08K3/14C08K3/22C08K9/06C08K9/08C08K13/06C08K2003/3045C08K2201/003
Inventor 孙海
Owner 孙海
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