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Nano-magnetic silicon rubber as well as preparation method and application thereof

A nano-magnetic and silicone rubber technology, applied in the direction of the magnetism of organic materials/organic magnetic materials, can solve the problems of polluting the environment, reducing product magnetism, flammable and explosive solvents, etc., and achieves the effect of simple operation

Inactive Publication Date: 2012-09-26
闾夏轶 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] to Fe 3 o 4 The traditional method of magnetic nanosurface modification is to incorporate nano-Fe 3 o 4 The particles react directly with the silane coupling agent in solution at a certain pH value, which makes the nano-Fe 3 o 4 There are too many hydroxyl groups in the particles, which leads to the connection of silane coupling agent to nano-Fe 3 o 4 If the number of particles is too large, the nano-Fe 3 o 4 The particles are basically wrapped, which reduces the magnetic properties of the product; the solvents used are often flammable and explosive, or pollute the environment (1. Qin Kunhua, Ma Wenshi, Silicone Materials, 2008, 22 (2): 71-75; 2. Liang Fangyi, Gu Shunchao, Zhou Jinxin, Materials Herald, 2010, 24 (16): 170-173)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Nano-Fe with a particle size of 5 nm 3 o 4 Calcined at 200 °C for 10 h, and then placed into nano-Fe 3 o 4 In KH-550 silane coupling agent with 5% by weight, react at 80 °C for 2 h under stirring, filter after the reaction, wash the filter residue with absolute ethanol until neutral, and extract in acetone solution for 24 h after vacuum drying to remove residual KH-550 silane coupling agent and KH-550 silane coupling agent produced by hydrolysis, not connected to Fe 3 o 4 The product on the surface was modified by silane coupling agent to obtain nano-Fe 3 o 4 .

[0050] 40 g of vinyl silicone oil with a viscosity of 100 mPa·s, 20 g of the above-mentioned nano-Fe surface-modified by silane coupling agent 3 o 4 、H 2 PtCl 6 The mass percent concentration is 20% H 2 PtCl 6 Isopropanol solution 2.1 x 10 -3 g (wherein Pt is 2×10 -4 g, accounting for 2 ppm), 0.5×10 -4 g (accounting for 0.5 ppm) tetramethylbutynol and the rest fumed silica with a particle siz...

Embodiment 2

[0056] Nano-Fe with a particle size of 80 nm 3 o 4 Calcined at 800 °C for 0.5 h, and then placed into nano-Fe 3 o 4 In KH-560 silane coupling agent with 5% by weight, react at 100 °C for 3 h under stirring, filter after the reaction, wash the filter residue with absolute ethanol until neutral, and extract in acetone solution for 24 h after vacuum drying to remove residual KH-560 silane coupling agent and KH-560 silane coupling agent produced by hydrolysis, not connected to Fe 3 o 4 The product on the surface was modified by silane coupling agent to obtain nano-Fe 3 o 4 .

[0057] 40 g of vinyl silicone oil with a viscosity of 100 mPa·s, 30 g of the above-mentioned nano-Fe surface-modified by silane coupling agent 3 o 4 、H 2 PtCl 6 10% H by mass 2 PtCl 6 0.105 g of tetrahydrofuran solution (wherein, in terms of Pt, it is 5×10 -3 g, accounting for 50 ppm), 1×10 -4 g (accounting for 1ppm) propynyl alcohol and the rest fumed silica with a particle size of 7 nm, mi...

Embodiment 3

[0063] Nano-Fe with a particle size of 20 nm or 80 nm 3 o 4 Calcined at 800 °C for 0.5 h, and then placed into nano-Fe 3 o 4 In KH-570 silane coupling agent with 5% by weight, react at 100 °C for 3 h under stirring, filter after the reaction, wash the filter residue with absolute ethanol until neutral, and extract in acetone solution for 24 h after vacuum drying to remove residual KH-570 silane coupling agent and KH-570 silane coupling agent produced by hydrolysis, not connected to Fe 3 o 4 The product on the surface of the silane coupling agent is modified to obtain a particle size of 20 nm or 80 nm nano-Fe 3 o 4 .

[0064] 60 g of vinyl silicone oil with a viscosity of 100 mPa·s, 30 g of the above-mentioned nano-Fe with a particle size of 20 nm modified by a silane coupling agent 3 o 4 , chloroplatinic acid mass percent concentration is 10% tetrahydrofuran solution of chloroplatinic acid (calculated as Pt is 1.5 × 10 -3 g, 15 ppm), 1×10 -4 g (accounting for 1 ppm...

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Abstract

The invention discloses nano-magnetic silicon rubber which is prepared from a component A and a component B according to a certain proportion, wherein the component A is composed of vinyl silicone oil, silane coupling agent surface modified nano Fe3O4, a platinum catalyst, an inhibitor and white carbon black, and the component B is composed of dimethyl hydrogen containing silicone fluid, vinyl silicone oil, silane coupling agent surface modified nano Fe3O4 and white carbon black. The nano-magnetic silicon rubber has biocompatibility and favorable magnetism and can be used for researching and developing a medical magnetic navigation device such as a thoracoscope lens and relevant appliances. The invention also discloses a preparation method of the nano-magnetic silicon rubber, comprising the following steps of: uniformly mixing the component A and the component B, then, pouring, and curing and forming under the action of an external magnetic field to prepare the nano-magnetic silicon rubber. The method is simple and safe in operation and suitable for industrial production.

Description

technical field [0001] The invention relates to a nano-magnetic organic polymer composite material and its preparation method and application field, in particular to a nano-magnetic silicon rubber and its preparation method and application. [0002] Background technique [0003] On the premise of ensuring the effect of surgical treatment, reducing the trauma caused by surgery to patients is always one of the goals pursued by surgeons. With the development of medicine and the advancement of science and technology, the wide development and application of various laparoscopic and endoscopic technologies have realized the dream of surgeons to pursue minimally invasive surgery, and brought human beings into a new era in the surgical treatment of diseases. [0004] However, people's pursuit of minimally invasive is never-ending, and various measures are taken to further reduce the invasiveness of laparoscopic surgery. To achieve this goal, surgeons have proposed single-incision ...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K9/06C08K3/22C08K3/36H01F1/42
Inventor 闾夏轶杨轶娜
Owner 闾夏轶
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