阅读说明：本技术 一种防辐射的气凝胶毡 (Radiation-proof aerogel felt ) 是由 闵鹏 秦科 戴会文 宋旋 尹德真 于 2020-12-30 设计创作，主要内容包括：一种防辐射的气凝胶毡,它包括纺织层、混合层、气凝胶层,所述混合层由上下两层组成,中间包裹着气凝胶层,并在混合层外设有纺织层,通过复合工艺,将纺织层、混合层、气凝胶层进行复合成型,所述混合层由多片竹纤维条交叉编织而成,并在竹纤维板层缝隙之间填入细小的石墨块组成,其石墨块的厚度与竹纤维板层的的厚度相同,通过胶水进行粘合固定形成一块混合板层。本发明中的材料可起到对类似快中子射线的防护。该防辐射的气凝胶毡可应用在具有放射性介质的设备隔热中,在起到保温的同时可大大降低放射性射线进入周围环境的总量,对工业辐射防护安全和人员的健康起到了非常积极的作用。(The utility model provides an aerogel felt of radiation protection, it includes weaving layer, mixed layer, aerogel layer, the mixed layer is by upper and lower two-layer constitution, and the aerogel layer is being wrapped up in the centre to be equipped with the weaving layer outside the mixed layer, through compound technology, with weaving layer, mixed layer, aerogel layer carry out compound molding, the mixed layer is woven by the crossing of multi-disc bamboo fiber strip and is formed to pack into tiny graphite block group between bamboo fiber board layer seam and constitute, the thickness on its graphite block is the same with the thickness on bamboo fiber board layer, carries out bonding fixation through glue and forms a mixed sheet layer. The material of the invention can play a role in protecting similar fast neutron rays. The radiation-proof aerogel felt can be applied to heat insulation of equipment with radioactive media, can greatly reduce the total amount of radioactive rays entering the surrounding environment while preserving heat, and plays a very positive role in industrial radiation protection safety and personnel health.)

1. The utility model provides an aerogel felt of radiation protection, it includes weaving layer, mixed layer, aerogel layer, its characterized in that mixed layer is by upper and lower two-layer constitution, and the middle aerogel layer of wrapping up to be equipped with the weaving layer outside mixed layer, through compound technology, carry out compound molding with weaving layer, mixed layer, aerogel layer, mixed layer is alternately woven by the multi-disc bamboo fiber strip and is formed to pack into tiny graphite block group between bamboo fiber board layer seam and constitute, the thickness of its graphite block is the same with the thickness on bamboo fiber board layer, bonds through glue and fixes and forms a mixed sheet layer.

2. The radiation protective aerogel blanket of claim 1, wherein said textile layer is made of stainless steel fiber blanket, and the aerogel layer is carbon based aerogel.

3. The radiation protective aerogel blanket of claim 1, wherein the textile layer, the hybrid layer, and the aerogel layer are all 1mm-10mm thick, and the thickness after compounding is less than 7 mm.

Technical Field

The invention relates to the field of heat preservation and radiation protection, in particular to a novel anti-radiation aerogel felt with high heat-insulating performance, which can be applied to heat insulation and radiation protection of high-temperature equipment or a factory building with larger radiation performance.

Background

Aerogel is a solid form, the least dense solid in the world, with a density as low as 3kg per cubic meter. The material is a high-dispersion solid material which is formed by mutually gathering ultrafine particles or high polymer molecules and is in a nano porous network structure, gaseous dispersion media are filled in pores, the porosity of the material can reach more than 99 percent, the pore size distribution is in a nano level, the material is the lightest condensed material in the world, and the material has low refractive index, low conductivity coefficient and low sound propagation speed, and has very wide application prospect in the aspects of heat insulation materials, catalysts, noise reduction and shock absorption, high-energy particle detection, purification systems and the like. The basic research and application research of the aerogel is increasingly concerned by scholars at home and abroad, and the aerogel with unique and excellent performance is increasingly widely applied, thereby becoming a research hotspot in the field of current materials.

The nano aerogel felt prepared at the present stage mainly comprises silica aerogel composite inorganic fibers, has excellent temperature resistance and heat insulation performance, but has no radiation protection performance, and has certain limitations in conventional aerogel materials in some devices or plants with high radiation performance such as a nuclear island system.

Disclosure of Invention

The invention aims to solve the technical problem of providing an aerogel felt with radiation protection by utilizing excellent radiation protection performance of metal fibers and carbon-based aerogel aiming at a short plate of the existing silica aerogel on radiation protection.

The invention aims to solve the technical scheme that the radiation-proof aerogel felt comprises a textile layer, a mixing layer and an aerogel layer, wherein the mixing layer consists of an upper layer and a lower layer, the aerogel layer is wrapped in the middle of the mixing layer, the textile layer is arranged outside the mixing layer, the textile layer, the mixing layer and the aerogel layer are compounded and formed through a compounding process, the mixing layer is formed by alternately weaving a plurality of bamboo fiber strips, fine graphite blocks are filled between seams of the bamboo fiber plate layer, the thickness of each graphite block is the same as that of the bamboo fiber plate layer, and the graphite blocks are bonded and fixed through glue to form a mixing plate layer.

Preferably, the method comprises the following steps: the textile layer is made of stainless steel fiber felt, and the aerogel layer is carbon-based aerogel.

Preferably, the method comprises the following steps: the thicknesses of the textile layer, the mixed layer and the aerogel layer are all 1-10 mm, and the thickness after compounding is less than 7 mm.

The beneficial technical effects of the invention patent are as follows: the invention relates to a radiation-proof aerogel felt, which is characterized in that an ultrafine stainless steel fiber felt has the characteristics of fineness and soft softening, and the stainless steel fiber has good attenuation characteristic on gamma rays, so that the radiation-proof aerogel felt can protect similar gamma rays; the carbon-based aerogel has extremely high rebound speed and extremely low energy loss, and simultaneously keeps high strength and stability, the mixed layer made of bamboo weaving and graphite can play a role in reinforcing ribs and heat preservation, and the characteristics enable the carbon-based aerogel to have good deceleration and absorption performance on fast neutron rays, and can play a role in protecting similar fast neutron rays. The radiation-proof aerogel felt can be applied to heat insulation of equipment with radioactive media, can greatly reduce the total amount of radioactive rays entering the surrounding environment while preserving heat, and plays a very positive role in industrial radiation protection safety and personnel health.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic representation of the structure of a carbon-based aerogel according to the present invention;

FIG. 3 is a schematic diagram of a hybrid layer structure according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.

As shown in figures 1-3, the radiation-proof aerogel felt comprises a textile layer, a mixing layer and an aerogel layer, wherein the mixing layer consists of an upper layer and a lower layer, the aerogel layer is wrapped in the middle of the mixing layer, the textile layer is arranged outside the mixing layer, the textile layer, the mixing layer and the aerogel layer are compounded and formed through a compounding process, the mixing layer is formed by alternately weaving a plurality of bamboo fiber strips, fine graphite blocks are filled between seams of the bamboo fiber board layer, the thickness of each graphite block is the same as that of the bamboo fiber board layer, the graphite blocks are bonded and fixed through glue to form a mixing board layer, the textile layer is made of a stainless steel fiber felt, the aerogel layer is carbon-based aerogel, the thicknesses of the textile layer, the mixing layer and the aerogel layer are all 1mm-10mm, and the thickness after compounding is smaller than 7 mm.

The aerogel felt is characterized in that a stainless steel fiber felt is used as a base material 1, and a carbon-based aerogel 2 is compounded; the stainless steel fiber felt 1 is made of stainless steel serving as a base material through a set of special processes such as multiple bundling drawing, annealing, solution treatment and the like to form stainless steel fiber filaments 3, each strand comprises thousands of fibers and tens of thousands of fibers, the surface area of the stainless steel fiber 3 is very large, so that the stainless steel fiber 3 has extraordinary performance in the aspects of internal structure, thermal resistance, melting point and the like, and the extremely dense heavy metal stainless steel fiber 3 has good gamma ray blocking performance; the carbon-based aerogel 2 is prepared by using resorcinol-formaldehyde (RF) resin as a hard carbon source, using a plurality of nano fibers including nano fiber aerogel prepared by using bacterial cellulose nano fibers, tellurium nano wires and carbon nano tubes as a structural template, and then carbonizing at high temperature to obtain the carbon-based aerogel with superelasticity and fatigue resistance, wherein the superelastic nano matrix has excellent deceleration and absorption properties on neutron rays.

The felt disclosed by the invention is made into a heat-insulating material which is soft, low in density, high-temperature resistant and low in heat conduction, has excellent radiation-proof performance, can be used for heat insulation and radiation protection of high-temperature equipment or a workshop with higher radiation performance, and plays a positive role in industrial safety and personnel health.

The radiation-proof aerogel felt disclosed by the invention can be applied to heat insulation of equipment with radioactive media, can greatly reduce the total amount of radioactive rays entering the surrounding environment while preserving heat, and plays a very positive role in industrial radiation protection safety and personnel health.

The specific embodiments described herein are merely illustrative of the principles and utilities of the present patent and are not intended to limit the present patent. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present patent application shall be covered by the claims of the present patent application.