Functional dressing and preparation method thereof

A functional, volatile organic technology, applied in adhesive dressings, non-adhesive dressings, dressings, etc., can solve the problems of inconvenient use, accelerated micro-current stimulation, etc., and achieve convenient use, improved spinning efficiency, and good biocompatibility Effect

Active Publication Date: 2021-06-25
ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is the same as the Chinese patent application CN110090316A, which stimulates wound healing through the micro-current formed by the electret. Both of them need to use constant voltage corona charging. After discharging, they need to be recharged to accelerate the micro-current stimulation function, which is inconvenient to use. Requires special charging equipment

Method used

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  • Functional dressing and preparation method thereof
  • Functional dressing and preparation method thereof
  • Functional dressing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Dissolve PVDF powder (molecular weight: 550,000) in N,N-dimethylformamide with stirring and dissolving in an oil bath at 50°C to obtain a uniform and transparent solution (the first spinning solution) with a mass concentration of 25%, draw 5mL with a 10mL syringe Electrospinning is performed on the above spinning liquid, and the fiber filaments are received into a film-like structure to obtain a fiber film with a thickness of 0.08 mm. Electrospinning parameters are: spinning voltage 10kV, spinning advance speed 2mL / h, receiving distance 20cm, spinning needle inner diameter 0.8mm, spinning temperature 25°C, receiving time 2h. Liquid silicone resin (80 parts of Zhonghao Chenguang Chemical Research Institute Co., Ltd. 1053 silicone resin + 18 parts of Zhonghao Chenguang Chemical Research Institute Co., Ltd. GY209-3 hydroxyl silicone oil + 2 parts of Shandong Qufu Chemical Co., Ltd. KH550) will be used for the prepared fiber film, Tu-4 cup viscosity 68s, cured Shore A hardn...

Embodiment 2

[0052] PDMS (Jiangxi Lanxinghuo Silicone Co., Ltd. RTV108, molecular weight 1,000,000) was dissolved in tetrahydrofuran (THF) and stirred at room temperature to obtain a uniform and transparent solution (the second spinning solution) with a mass concentration of 45%. PVDF powder (molecular weight 550,000) was dissolved in N,N-dimethylformamide with stirring and dissolving in an oil bath at 50° C. to obtain a uniform and transparent solution (the first spinning solution) with a mass concentration of 30%. The prepared two polymer solutions (the first spinning solution and the second spinning solution) were mixed according to the PVDF / PDMS mass ratio of 4:1, and the mixed solution was magnetically stirred at room temperature for 2 hours to obtain a uniform and transparent spinning solution. Silk solution (blended spinning solution). 5 mL of the above-mentioned mixed spinning solution was extracted with a 10 mL syringe for electrospinning, and the fiber filaments were received int...

Embodiment 3

[0054] Dissolve PDMS (RTV108, molecular weight: 1,000,000 from Jiangxi Lanxinghuo Silicone Co., Ltd., molecular weight: 1,000,000) in THF and stir at room temperature to obtain a uniform and transparent solution with a mass concentration of 50%. Dissolve PVDF powder (molecular weight: 550,000) in N,N-di Methylformamide was stirred and dissolved in an oil bath at 50° C. to obtain a uniform and transparent solution with a mass concentration of 25%. The prepared two polymer solutions were mixed according to the PVDF / PDMS mass ratio of 5:1, and the mixed solution was magnetically stirred at room temperature for 2 hours to obtain a uniform and transparent spinning solution. 5 mL of the above-mentioned mixed spinning solution was extracted with a 10 mL syringe for electrospinning, and the fiber filaments were received into a film-like structure to obtain a blended fiber film with a thickness of 0.1 mm. Electrospinning parameters are: spinning voltage 10kV, spinning advance speed 2mL...

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Abstract

The invention relates to the technical field of functional materials, and particularly discloses a functional dressing and a preparation method thereof. The functional dressing comprises a fiber layer with piezoelectric performance and an organic silicon layer, wherein the fiber layer is compounded with the organic silicon layer; the organic silicon layer is used for being in contact with an application object; and the fiber layer is a polyvinylidene fluoride fiber membrane or a polyvinylidene fluoride-polysiloxane blended fiber membrane. The functional dressing can achieve the functions of accelerating wound healing and reducing scar generation at the same time, does not need matched charging equipment, is convenient to use, and has the advantages of tight and firm combination of the fiber layer and the organic silicon layer, good air permeability, good biocompatibility, ideal tensile property and strength, easiness in application and long service life. The preparation method of the functional dressing is simple and convenient, the production efficiency is high, the product quality is easy to control, the uniformity is good, and it can be guaranteed that the comprehensive performance of the functional dressing is exerted.

Description

technical field [0001] The invention relates to the technical field of functional materials. Specifically, it relates to a functional dressing and a preparation method thereof. Background technique [0002] The National Aeronautics and Space Administration (NASA) has developed a new type of medical bandage called an electric bandage using polyvinylidene fluoride (PVDF) with piezoelectric properties. Experiments have shown that low-level electrical stimulation could theoretically help promote wound healing. In the weightless outer space, the healing of wounds is extremely slow. Therefore, it is of great significance to develop new medical material bandages that accelerate wound healing. Polysiloxane (PDMS) dressing, also known as "Silicon Dressing (Silicon Dressing)", is a synthetic dressing based on polysiloxane. Polysiloxane-based materials have many excellent properties, such as transparency, elasticity, chemical inertness, and biocompatibility, and are widely used in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4318D04H1/4374D04H1/4382D04H1/728A61F13/00A61F13/02A61N1/18D01D5/00
CPCD04H1/4318D04H1/4374D04H1/4382D04H1/728D01D5/003D01D5/0069D01D5/0061D01D5/0092A61N1/18A61F13/02A61F13/0286A61F13/00038
Inventor 涂世俭陈立义陈胜宋振虎汪仲权
Owner ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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