High-Z-element-natural leather composite X-ray shielding material and preparation method thereof

A technology of natural leather and shielding materials, applied in special leather manufacturing, leather impregnation, small raw hide/big raw hide/leather/fur treatment, etc., can solve problems such as hazards, poor water and gas permeability, and poor compatibility, and achieve a wide range of applications , strong universal applicability, large load effect

Active Publication Date: 2019-09-10
SICHUAN UNIV
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer-based nanocomposites currently prepared still have the following problems: (1) due to poor compatibility, the mixing of synthetic polymers and high Z element oxide nanoparticles is not uniform; (2) the high Z element oxide nanoparticles have a fixed crystal form, which will gener

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-Z-element-natural leather composite X-ray shielding material and preparation method thereof
  • High-Z-element-natural leather composite X-ray shielding material and preparation method thereof
  • High-Z-element-natural leather composite X-ray shielding material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] Example 1

[0046] Weigh 1 part of SrCl 2 ·6H 2 O was dissolved in 15 parts of deionized water, the pH of the solution was adjusted to 3.0 with HCl, and 1 part of 1.0 mm thick chrome-tanned cowhide was added to the prepared salt solution. The reaction was assisted by ultrasound at 20 ℃ for 0.5 h, and then The sample is dried in an oven at 60 ℃ to obtain nano-strontium chloride-cowhide composite material.

[0047] Inspection of the prepared composite material shows that the composite material has a shielding efficiency of 95% for X-rays with an average energy of 16 keV and a half-value layer of 0.32 mm Al. The X-ray shielding efficiency of 0.24 mm Cu reaches 36%. Then the tear strength is tested, and the result is Picture 12 The stress-elongation image of the nano-strontium chloride-pigskin composite shown. It can be seen from the figure that the prepared composite material has excellent tear strength.

Example Embodiment

[0048] Example 2

[0049] Weigh 2 parts of AgNO 3 Dissolve in 198 parts of deionized water, use HCl to adjust the pH of the solution to 4.0, take 1 part of 0.7 mm thick chrome-tanned sheepskin in the prepared salt solution, invert and shake at 35 ℃ for 1 h, then soak the sample Dehydrate in excess acetone to obtain nano-silver nitrate-sheepskin composite material.

[0050] Inspection of the prepared composite material shows that the composite material has a shielding efficiency of 68% for X-rays with an average energy of 16 keV and a half-value layer of 0.32 mm Al. The average energy is 48 keV and a half-value layer is The X-ray shielding efficiency of 0.24 mm Cu has reached 17%. Scan the material with an electron microscope to obtain figure 1 SEM image of nano-silver nitrate-sheep skin composite shown. It can be seen from the figure that a large number of silver nitrate nanoparticles are loaded on the sheepskin fiber, and the distribution is relatively dense, and the size of th...

Example Embodiment

[0051] Example 3

[0052] Weigh 36 parts of SnCl 4 Dissolve in 84 parts of acetone, take 1 part of 1.5 mm thick chrome-tanned pigskin in the prepared salt solution, shake it on a shaker at 10 ℃ for 2 h, and then place the sample in a vacuum drying oven to dry, namely Can obtain nano tin chloride-pigskin composite material.

[0053] Inspection of the prepared composite material shows that the composite material has a shielding efficiency of 73% for X-rays with an average energy of 16 keV and a half-value layer of 0.32 mm Al. The X-ray shielding efficiency of 0.24 mm Cu reached 24%. After testing, the tear strength of the material is 53 N mm -1 It can be seen that the prepared composite material has excellent tear strength.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a high-Z-element-natural leather composite material. The method comprises the following step: leather produced by a conventional tanning process is immersed into a salt solution containing a high Z element, and a large amount of active functional groups in the leather are utilized to be combined with high-Z-element ions to obtain the high-Z-element nanoparticle-natural leather composite X-ray shielding material. The method provided by the invention has the advantages of a simple and controllable preparation process, a rich raw material source, alow price, mild reaction conditions, no need of special processing equipment, and easy industrial scale-up production; the high-Z-element-natural leather composite material prepared by the method hasa low density and a light mass, and the material has excellent shielding performance and reduces secondary radiation when applied to X-ray shielding; and in addition, the material not only solves theshortcomings of poor mechanical properties of a conventional polymer shielding material, but also provides good wearing comfortability.

Description

technical field [0001] The invention belongs to the technical field of functional materials and their preparation, in particular to a natural leather-based X-ray shielding material with light weight, low scattering, high shielding performance and high mechanical strength and a preparation method thereof. Background technique [0002] With the development of nuclear physics, ionizing radiation is increasingly used in people's daily life, such as medical imaging, radiation therapy, metal flaw detection and material characterization. At the same time, in nature and industrial production, ionizing radiation often appears as a by-product (Nambiar S, Yeow J T W. Polymer-Composite Materials for Radiation Protection[J]. ACS Applied Materials & Interfaces, 2012, 4(11) :5717–5726.). However, if the human body is exposed to ionizing radiation for a long time, DNA will be damaged to varying degrees, causing cell mutation, and then leading to symptoms such as vomiting, diarrhea, catarac...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C14C9/00C14C13/00
CPCC14C9/00C14C13/00
Inventor 廖学品王亚平李倩王亚楠周建飞曾运航黄鑫石碧
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap