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Method for preparing nano-metal silicon rubber

A nano metal silicon and nano metal technology, which is applied in the field of preparation of nano metal silicon rubber, can solve the problems of poor X-ray blocking performance, unsatisfactory long-term application effect, poor visibility and the like

Inactive Publication Date: 2010-12-22
HAINAN MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of silicone rubber implant materials in surgical clinics is still challenged by its own defects.
For example, the X-ray opacity of silicone rubber is not good, and the visibility under X-ray transillumination after implantation in the body is poor.
The dynamic conditions such as displacement, deformation, cracking, falling off, and failure of silicone rubber appliances implanted in the body for a long time are difficult to be confirmed by X-ray imaging examination
In order to overcome this shortcoming of medical silicone rubber, the classic foreign method is to add barium agent (barium sulfate) to the silicone rubber to construct barium-impregnated silicone rubber (barium-impregnated silicone rubber), so as to endow the silicone rubber with X-ray , The function of visualization under CT transmission, but after long-term implantation of barium-containing silicone rubber materials in the human body, the long-term application effect is not ideal

Method used

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  • Method for preparing nano-metal silicon rubber
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  • Method for preparing nano-metal silicon rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The formula ratio of silicone rubber and nano-iron powder is 99-75 parts: 1-25 parts, that is, 75:25, 76:24, 77:23, ..., 97:3, 98:2, 99: The formula ratio of 1 is blended, each formula is 100g in total, and there are 25 groups in total.

[0029] The preparation process steps of each group are:

[0030] (1) According to the actual formula, accurately weigh the amount of various materials in the formula, place the raw silicone rubber, carbon black, liquid softener, and sulfur separately, and arrange them in order. The liquid softener is methyl vinyl silicone oil, Extract 1 / 3 of the total amount of silicone oil, pour it into a nano-metal sealed packaging bag, mix it with nano-metal particles, and make a silicone oil nano-metal mixture;

[0031] (2) Turn on the power and heating switch, preheat the internal mixer, adjust the temperature of the internal mixing chamber to 70±5°C, the pressure of the top bolt is 0.3-0.6Mpa, the water pressure is 0.2-0.4Mpa, and the parameters...

Embodiment 2

[0038] The formula ratio of silicone rubber and carbon-coated iron powder is 99-75 parts: 1-25 parts, that is, 75:25, 76:24, 77:23, ..., 97:3, 98:2,99 : 1 formula ratio blending, each formula 100g in total, 25 groups in total.

[0039] The preparation process steps of each group are:

[0040] (1) According to the actual formula, accurately weigh the amount of various materials in the formula, place the raw silicone rubber, carbon black, liquid softener, and sulfur separately, and arrange them in order. The liquid softener is methyl vinyl silicone oil, Extract 1 / 3 of the total amount of silicone oil, pour it into a nano-metal sealed packaging bag, mix it with nano-metal particles, and make a silicone oil nano-metal mixture;

[0041] (2) Turn on the power and heating switch, preheat the internal mixer, adjust the temperature of the internal mixing chamber to 70±5°C, the pressure of the top bolt is 0.3-0.6Mpa, the water pressure is 0.2-0.4Mpa, and the parameters of the motors ar...

Embodiment 3

[0048] The formula ratio of silicone rubber and silver powder is 99-75 parts: 1-25 parts, preferably 99:1 or 95:5. Each formula is 100g in total, and there are 2 groups in total.

[0049] The preparation process steps of each group are:

[0050] (1) According to the actual formula, accurately weigh the amount of various materials in the formula, place the raw silicone rubber, carbon black, liquid softener, and sulfur separately, and arrange them in order. The liquid softener is methyl vinyl silicone oil, Extract 1 / 3 of the total amount of silicone oil, pour it into a nano-metal sealed packaging bag, mix it with nano-metal particles, and make a silicone oil nano-metal mixture;

[0051] (2) Turn on the power and heating switch, preheat the internal mixer, adjust the temperature of the internal mixing chamber to 70±5°C, the pressure of the top bolt is 0.3-0.6Mpa, the water pressure is 0.2-0.4Mpa, and the parameters of the motors are normal and meet the process requirements;

[...

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Abstract

The invention discloses a method for preparing nano-metal silicon rubber. The formula ratio of the silicon rubber to nano-metal based on percentage by part is 99-75:1-25; each formula is totally 100 grams in weight; and the nano-metal is one of iron powder, carbon-coated iron powder, nickel powder, carbon-coated nickel powder, silver powder and gold powder. A silicon rubber / nano-metal composite material with high developing property under X-ray transmission can be prepared by filling metal iron, carbon-coated iron and nano-silver particles which keep high X-ray radiation resistance into a medicinal silicon rubber matrix, so that visibility function of an X-ray image is achieved after the medicinal silicon rubber is implanted into a body.

Description

technical field [0001] The invention relates to a medical silicone rubber material, in particular to a preparation method of nanometer metal silicone rubber. Background technique [0002] The multifunctionalization of biomaterials implanted in the body is one of the research directions for the improvement of biomaterials. The more multifunctional the material is, the better it can meet the special needs of the clinic, and the easier it is for clinical use. The function of giving X-ray visibility to medical silicone rubber materials is in line with the principles of biomedical engineering and the actual needs of clinical medicine. The imaging compatibility of surgical implant materials, that is, the visibility under imaging examinations, is a higher requirement for the biocompatibility of materials. The X-ray imaging visibility of the implanted material itself can be clinically convenient, economical, fast, and non-invasive to track the real-time status of the material in th...

Claims

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Application Information

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IPC IPC(8): A61L27/18A61L27/04A61L27/50A61L31/06A61L31/02A61L31/14
Inventor 吴幸
Owner HAINAN MEDICAL COLLEGE
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