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Compound electret membrane, preparation method thereof and use thereof

An electret and polar film technology, applied in the field of composite electret film and its preparation, can solve problems such as no report of composite electret film, achieve simple and reliable technical equipment, mature electret method, and promote micro-electret. loop effect

Inactive Publication Date: 2009-10-21
BEIJING ZHONGYING MOBILE TECH SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Have not yet seen the report of composite electret film of the present invention

Method used

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  • Compound electret membrane, preparation method thereof and use thereof
  • Compound electret membrane, preparation method thereof and use thereof
  • Compound electret membrane, preparation method thereof and use thereof

Examples

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Effect test

Embodiment 1

[0022] The preparation of embodiment 1 composite electret film

[0023] Take porous membrane PTFE (thickness about 160 μm, pore size 5 μm), FEP membrane (thickness about 50 μm, pore size 5 μm), and melt at 300°C for 20 minutes to prepare PTFE / FEP electret membrane. Electrode, needle voltage -12kv, room temperature electret 1min, prepared surface voltage -1kv. Store in a desiccator for later use.

[0024] Take 1g of dragon's blood fine powder and dissolve it with 100ml of ethanol to prepare a liquid with a concentration of 10mg / ml. Take a PP film (film thickness 13 μm, pore size 5 μm), soak it in the liquid medicine, take it out after 8 hours, and dry it under reduced pressure at 80°C to constant weight. The drug loading is 0.053mg / cm 2 .

[0025] The composite electret film was prepared by softening and melting the drug-loaded PP film and the PTFE / FEP electret film at 120°C.

Embodiment 2

[0026] The preparation of embodiment 2 composite electret film

[0027] Take porous membrane PTFE (film thickness about 160 μm, pore diameter 5 μm), FEP membrane (film thickness about 50 μm, pore diameter 5 μm), melt at 300 ° C for 20 minutes, prepare PTFE / FEP electret membrane, and use constant voltage negative corona electret for the surface , needle voltage -12kv, room temperature electret 1min, prepared surface voltage -1kv. Store in a desiccator for later use.

[0028] Take 30g of notoginseng fine powder, extract with 300ml of ethanol under reflux, and extract 3 times, each time for 1h. The extracts were combined and concentrated, evaporated to dryness under reduced pressure, weighed 1 g of the dried product, and dissolved it in 100 ml of ethanol to prepare a drug solution with a concentration of 10 mg / ml. Take a PP film (film thickness 13 μm, pore size 5 μm), soak it in the liquid medicine, take it out after 8 hours, and dry it under reduced pressure at 80°C to constan...

Embodiment 3

[0030] The preparation of embodiment 3 composite electret film

[0031] Take the porous membrane PTFE (the film thickness is about 160 μm and the pore diameter is 5 μm), the FEP film (the film thickness is about 50 μm and the pore diameter is 5 μm), and melt at 300 ° C for 20 minutes to prepare the PTFE / FEP electret film. Needle voltage -12kv, electret at room temperature for 1min, preparation surface voltage is -1kv. Store in a desiccator for later use.

[0032] Take 30g of notoginseng fine powder, extract with 300ml of ethanol under reflux, and extract 3 times, each time for 1h. The extracts were combined and concentrated, evaporated to dryness under reduced pressure, weighed 1 g of the dried product, and dissolved it with 1 g of dragon's blood fine powder, and dissolved it in 200 ml of ethanol to prepare a liquid with a concentration of 10 mg / ml. Take a PP film (film thickness 13 μm, pore diameter 5 μm), soak it in the liquid medicine, take it out after 8 hours, and dry i...

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Abstract

The invention relates to a compound electret membrane, a preparation method thereof and the use thereof and belongs to the field of medical appliances. The compound electret membrane is produced from a porous membrane PTFE, FEP, PP and a blood-activating clot-dispersing Chinese medicament which is an ethanolic extract of notoginseng root, or dragon's blood or a pharmaceutical composition of the ethanolic extract of notoginseng root and the dragon's blood. The method adopts a melting process to prepare a PTFE / FEP electret membrane, adopts a corona induced plasma chemical process to make an electret and compounds a PP membrane and the PTFE / FEP electret membrane which carry the blood-activating clot-dispersing Chinese medicament to produce a novel compound electret membrane. The obtained compound electret membrane has the effects of quickly reliving pain, activating blood and dispersing clot, resisting inflammatory, promoting fracture healing and microcirculation, improving Joint movement and functions and suppressing arthrosis. The compound electret membrane is applicable to the symptoms of primary or secondary arthropathy, osteoarthropathy, sports injury, lumbago, tenosynovitis, osteoporosis, hyperosteogeny, rheumatoid arthritis, and the like.

Description

technical field [0001] The invention relates to a composite electret film and its preparation method and application, belonging to the field of medical equipment. Background technique [0002] Electrets are a class of functional dielectric materials that can store space charges and dipole charges for a long time. Using the external field effect and microcurrent effect of electret can effectively regulate the biological electret state and the whole process of metabolism, and play a role in the electrolysis regulation of organism tissue cells, the conduction induction of nerve signals and the repair of tissue electret state , so as to achieve the purpose of treating diseases. [0003] Electret materials such as PTFE (polytetrafluoroethylene), FEP (polyfluoroethylene propylene copolymer) have excellent static charge ability and biocompatibility, and have functions such as antibacterial ability and adjustable electret state of biological tissues. It has become a research hotsp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/10A61M37/00A61K36/258A61K36/896A61P19/02A61P19/08A61P29/00A61P19/10
Inventor 孟薇薇曹群王瑶瑶赵妍王强
Owner BEIJING ZHONGYING MOBILE TECH SERVICE
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