Preparing method for high-strength high-isolation condom comprising modified graphene/latex interlayer

A technology of graphene and condoms, applied in the direction of coating, etc., can solve the problems of easy falling off and damage, poor elasticity, high cost, etc., and achieve the effect of reducing and inhibiting the transmission probability and increasing comfort

Inactive Publication Date: 2016-01-13
LIAONING LANJING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its disadvantages are: the elasticity is not as good as natural l

Method used

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  • Preparing method for high-strength high-isolation condom comprising modified graphene/latex interlayer
  • Preparing method for high-strength high-isolation condom comprising modified graphene/latex interlayer
  • Preparing method for high-strength high-isolation condom comprising modified graphene/latex interlayer

Examples

Experimental program
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Example Embodiment

[0044] The preparation methods of modified graphene or graphene derivatives include but are not limited to the following three methods: ① Graphene powder or liquid dispersion prepared by expansion and exfoliation of graphite as raw material and subsequent modified products (fluorinated, (Carboxylation, sulfonation, amination, oxidation, grafting and other modification derivatives); ②graphene prepared by chemical vapor deposition (CVD) or physical vapor deposition (PVD) with gaseous carbon source as raw material and its subsequent modification (Fluorination, carboxylation, sulfonation, amination, oxidation, grafting and other modified derivatives); ③Powder or liquid phase formed by the aggregation of graphene-like two-dimensional sheet materials formed by chemical polymerization of small molecular substances Dispersion and its subsequent modification (fluorination, carboxylation, sulfonation, amination, oxidation, grafting, etc.).

[0045] The order of adding latex or pre-vulcaniz...

Example Embodiment

[0057] Example 1

[0058] Add 200Kg of natural rubber latex with a concentration of 60wt% into a clean mixing tank, and gradually add 200Kg of sulfonated graphene aqueous solution with a concentration of 0.5wt‰ under stirring conditions. After the addition is complete, add 1wt%~ About 2wt% of dispersion stabilizer (such as sodium laurel silicate or F108), keep stirring for 1 hour to make it uniform. At this time, the viscosity is adjusted to about 15 mPa·s. The compounded glue is allowed to stand for about 24 hours to fully mature, and then perform three immersion production as described in the specific embodiment, and finally perform the performance test to obtain the finished product.

[0059] In order to verify the performance advantages of the new materials and condom products prepared by the present invention, the inventors used the national standard GB7544-2009 "Natural Latex Rubber Condom Technical Requirements and Experimental Methods" to compare the batches of graphene / ...

Example Embodiment

[0069] Example 2

[0070] Add 200Kg of natural rubber latex with a concentration of 35wt% into a clean mixing tank, gradually add 200Kg of graphene oxide aqueous solution with a concentration of 0.05wt‰ under stirring conditions, and then add 0.5wt% to 1wt% respectively after adding. Dispersion stabilizer (such as sodium laurel silicate or F108), keep stirring for 1 hour to make it evenly mixed, and the viscosity is about 8mPa·s. The compounded glue is allowed to stand for about 24 hours to fully mature, and then added to the dipping machine for dipping production as described in the specific embodiment, and finally the finished product is obtained after passing the performance test.

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Abstract

The invention relates to the field of composite materials and medical instruments, in particular to a preparing method for a high-strength high-isolation condom comprising a modified graphene/latex interlayer. The preparing method includes the steps that stable dispersion liquid prepared by modified graphene, latex liquid and common auxiliaries are mixed evenly to prepare compound latex liquid; a three-time impregnation process is adopted for forming, conventional latex liquid is used for impregnation in first-time and third-time impregnation, and the modified graphene/latex compound latex liquid is used as impregnation liquid in second-time impregnation to obtain the condom which is provided with conventional latex films on the innermost surface and the outermost surface and a modified graphene/latex compound material film interlayer in the middle to be of a sandwich structure finally. The prepared composite grapheme condom has the characteristic of blocking penetration of small-size viruses. Tear resistance and other indexes are obviously improved, and the blasting volume and the ultimate elongation rate are obviously increased on the premise of the same size. The high-strength high-isolation condom has the advantages of being scientific in principle, poisonless, harmless, stable in performance and capable of being matched with the current condem production process easily, and characteristics are remarkable.

Description

technical field [0001] The invention relates to the field of composite materials and medical devices, in particular to a method for preparing a high-strength, high-insulation condom containing a modified graphene / latex interlayer. Background technique [0002] As a commonly used family planning product, condoms can effectively shield the pathogens of diseases such as venereal diseases and AIDS. Proper use of condoms can significantly reduce the risk of sexually transmitted diseases. The main materials of condoms are: natural latex, polyurethane, and synthetic rubber. Natural latex (raw rubber, natural rubber) is obtained from cultivated rubber trees. It has good film-forming properties, high wet gel strength, good mechanical properties, high mechanical stability, white color and good foam stability. After processing, natural latex has excellent comprehensive properties and is currently the most widely used condom. But, because the structural characteristic of material it...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08K3/04B29C41/14
Inventor 郑金木乔素珍张柏华
Owner LIAONING LANJING TECH CO LTD
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