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Preparation method for nano barium sulfate/polyethylene copper intrauterine device T-type stent material

A nano-barium sulfate, scaffold material technology, applied in chemical instruments and methods, fibrous fillers, inorganic pigment treatment, etc., to achieve high tensile and flexural strength, good biocompatibility effects

Inactive Publication Date: 2013-07-10
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method and the prepared material have not been reported at home and abroad.

Method used

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  • Preparation method for nano barium sulfate/polyethylene copper intrauterine device T-type stent material
  • Preparation method for nano barium sulfate/polyethylene copper intrauterine device T-type stent material
  • Preparation method for nano barium sulfate/polyethylene copper intrauterine device T-type stent material

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Embodiment 1

[0034] A preparation method of nano barium sulfate / polyethylene uterine copper IUD T-shaped support material, the steps are as follows:

[0035] 1) Fill a closed three-neck flask with a reflux condenser and a magnetic stirring device with N with a purity of 99.999%. 2 Gas is fully replaced, add 10g of nano-barium sulfate prepared by EDTA complexation method and 500ml of hexane, stir well and raise the temperature to 70°C, slowly drop in 0.1gTiCl 4 , and stirred and reacted at this temperature for 50 minutes, filtered, the solid reactant was separated from the solution, and washed 3 times with hexane and deionized water respectively, and dried to remove the hexane to obtain a solid powder that was activated nano barium sulfate;

[0036] 2) Use N with a purity of 99.999% in a closed three-neck flask with a reflux condenser and a magnetic stirring device 2 Fully replace the gas, add 500ml hexane, 10g activated nano-barium sulfate and 1g trimethylaluminum, then feed ethylene gas,...

Embodiment 2

[0042] A preparation method of nano barium sulfate / polyethylene uterine copper IUD T-shaped support material, the steps are as follows:

[0043] 1) Fill a closed three-neck flask with a reflux condenser and a magnetic stirring device with N with a purity of 99.999%. 2 Fully replace, add 10g of nano-barium sulfate prepared by EDTA complexation method and 500ml of heptane, stir well and raise the temperature to 60°C, slowly drop in 0.05g of TiCl under stirring 4 , and stirred and reacted at this temperature for 50 minutes, filtered, and the solid reactant was separated from the solution, washed 4 times with a certain amount of heptane and deionized water, and dried to remove the heptane to obtain a solid powder that was activated Nano barium sulfate;

[0044] 2) Use N with a purity of 99.999% in a closed three-neck flask with a reflux condenser and a magnetic stirring device 2 Fully replace, add 500ml heptane, 10g activated nanobarium sulfate and 0.5g triisobutylaluminum, then...

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Abstract

The invention relates to a preparation method for a nano barium sulfate / polyethylene copper intrauterine device T-type stent material. The preparation method comprises the following steps of: activating prepared nano barium sulfate by using TiCl4, and then adding ethylene; adding an organic solvent, the activated nano barium sulfate and ALR3, and keeping monomer pressure and reaction temperature to carry out an ethylene polymerization reaction; stopping the reaction by using alcohol, and then carrying out in-situ polymerization to ensure that n-BaSO4 particles are uniformly distributed in thepolymer and form chemical bonding with the polymer; and carrying out separating, drying and hot-press forming to prepare the nano barium sulfate / polyethylene composite material. The preparation method has the advantages that the nano barium sulfate in the composite material prepared by adopting the in-situ polymerization method has high dispersity and can be uniformly distributed in the polymer matrix, and due to high surface activity, the n-BaSO4 particles can form strong chemical bonding with the polymer, so that the composite material not only has high mechanical properties of high tensileand flexural strength, proper elasticity modulus and the like, but also has good biocompatibility and can meet the use requirement on the copper intrauterine device T-type stent material of clinic.

Description

technical field [0001] The invention belongs to the preparation technology of inorganic / organic biocomposite materials, especially a kind of nano barium sulfate / polyethylene copper IUD T-shaped support material obtained by utilizing the high dispersibility and stability of nano barium sulfate particles in in-situ polymerization Preparation. Background technique [0002] IUD is a safe, easy and popular contraceptive method for women. In my country, 40% of women use intrauterine devices. However, so far, it can be said that any contraceptive measures have not yet reached the point of perfection. The intrauterine device is no exception. It is indeed relatively safe and effective, but it may also fail, causing bleeding, backache, abdominal drop, infection, and even displacement, pregnancy with the ring or called pregnancy with the ring. There are many types of intrauterine devices, and there are no less than 30 to 40 types currently used at home and abroad. The following only ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F110/02C08F2/44C08K9/02C08K3/30C09C1/02C09C3/06A61L31/12
Inventor 陈民芳张晗
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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