Preparation method of oilless lubricant condom having a single graphene-fluoride composite latex lubricating side

A technology of fluorinated graphene and composite latex, which is applied in medical science, surgery, etc., can solve the problems of reduced lubricating performance of graphite, and achieve the effects of enhanced lubricity, stable properties, and convenient industrial production and storage

Inactive Publication Date: 2019-09-06
张小伏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And, CF x (x=0.2~0.9) is not affected by any atmosphere, while the lubrication performance of graphite will be significantly reduced in inert and reducing atmosphere, and molybdenum disulfide in inert atmosphere

Method used

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  • Preparation method of oilless lubricant condom having a single graphene-fluoride composite latex lubricating side
  • Preparation method of oilless lubricant condom having a single graphene-fluoride composite latex lubricating side
  • Preparation method of oilless lubricant condom having a single graphene-fluoride composite latex lubricating side

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Experimental program
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Effect test

Embodiment 1

[0024] In the present embodiment, the preparation method of the oil-free condom that one side is the lubricating surface of fluorinated graphene composite latex is as follows:

[0025] Select 10 g of fluorinated graphene with a thickness of 90% normally distributed in layers 1 to 5, the atomic ratio of fluorine to carbon is 1:2, and the sheet diameter / thickness ratio is 1200. Soak it with concentrated sulfuric acid (concentration: 98wt%) and ferrate solution (concentration: 80wt%) for 2 hours at a mass ratio of 1:100, wherein the mass ratio of concentrated sulfuric acid: ferrate is 10:1. Then washed with water until neutral, vacuum freeze-dried into powder.

[0026] Put the oxidized freeze-dried fluorinated graphene powder into 1000g concentration of 1wt% polyvinylpyrrolidone (PVP) aqueous solution and sonicate for 1 hour, its effect is: further coat and modify the surface of fluorinated graphene; then filter to obtain the surface The treated fluorinated graphene powder is di...

Embodiment 2

[0033] In the present embodiment, the preparation method of the oil-free condom that one side is the lubricating surface of fluorinated graphene composite latex is as follows:

[0034]Select 10 g of fluorinated graphene whose thickness is 90% distributed in layers 1 to 5, the atomic ratio of fluorine to carbon is 1:1, and the sheet diameter / thickness ratio is 1600. Soak it with hydrogen peroxide and ferrate solution (concentration: 80wt%) for 2 hours at a mass ratio of 1:100, wherein the mass ratio of hydrogen peroxide: ferrate is 10:1. Then washed with water until neutral, vacuum freeze-dried into powder.

[0035] Put the oxidized freeze-dried fluorinated graphene powder into 1000g concentration of polyvinylpyrrolidone (PVP) aqueous solution for 1 hour, then filter to obtain surface-treated fluorinated graphene powder and disperse it into 1000g of pure water , forming a composite aqueous dispersion with a dispersion stability greater than 24 hours. Then, the composite aqueo...

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Abstract

The invention relates to the field of composites and medical instruments, in particular to a preparation method of an oilless lubricant condom having a single graphene-fluoride composite latex lubricating side. The preparation method comprises performing special chemical oxidation and surface modification on graphene fluoride so that the surface of the graphene fluoride has certain hydrophobicityand may form a stable dispersion in water; mixing the dispersion proportionally to natural latex or polyurethane latex to obtain a composite latex. A mold triple impregnating technique is utilized herein; conventional latex impregnating is performed in first and second impregnations to form a conventional latex layer; in third impregnation, an impregnating liquid is a composite latex; the condom with the outermost surface which is of graphene-fluoride composite latex is prepared finally. The condom herein provides outside lubrication and inside separation prevention after being put on. Since graphene fluoride has stable state, the condom never turns gray or dark. The condom, as a composite condom, herein can replace silicone oil; the oilless water-lubricating condom can be prepared.

Description

technical field [0001] The invention relates to the field of composite materials and medical devices, in particular to a method for preparing an oil-free condom with a lubricating surface of fluorinated graphene composite latex on one side. Background technique [0002] As a simple and effective method of physical isolation contraception, condoms are widely used in countries all over the world. The traditional method of lubricating condoms is to evenly apply a layer of silicone oil on the surface of the condom to achieve a lubricating effect; however, the silicone oil on the condom is insoluble in water and not easy to clean, causing it to cause harm to women's private parts. Silicone oil will affect the growth of normal flora in the vagina, causing the balance of flora to be destroyed; affecting the pH of the vagina, resulting in a decline in the vagina's ability to resist external germs, changing the vaginal environment, and causing vaginitis, cervical inflammation and oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/02A61L31/04A61L31/14
CPCA61L31/028A61L31/04A61L31/048A61L31/14C08L39/06
Inventor 张小伏
Owner 张小伏
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