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Method for preparing stable light-colored condoms with high thermal conductivity and high barrier properties by bonding graphene to hexagonal nanosheet boron nitride composite latex

A nano-sheet, composite latex technology, applied in male contraceptives and other directions, can solve problems such as affecting the appearance and performance of use, weather resistance, etc., to achieve stable and transparent color, good weather resistance, and barrier penetration.

Active Publication Date: 2019-05-03
辽宁格莱菲尔健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is inevitable that the condom made of graphene composite latex will inevitably have unstable color, which will affect the appearance and performance of the condom.

Method used

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  • Method for preparing stable light-colored condoms with high thermal conductivity and high barrier properties by bonding graphene to hexagonal nanosheet boron nitride composite latex
  • Method for preparing stable light-colored condoms with high thermal conductivity and high barrier properties by bonding graphene to hexagonal nanosheet boron nitride composite latex
  • Method for preparing stable light-colored condoms with high thermal conductivity and high barrier properties by bonding graphene to hexagonal nanosheet boron nitride composite latex

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Embodiment 1

[0033] In the present embodiment, the method for preparing stable light-colored high thermal conductivity and high insulating condoms by bonding graphene to hexagonal nano-sheet boron nitride composite latex is as follows:

[0034] Preparation of graphene / hexagonal nanosheet boron nitride composite solution: 1㎏ graphene oxide aqueous solution with a concentration of 2wt‰ is charged with a negative charge after being charged by an electric field. The aqueous solution containing 0.1wt‰ of hexagonal boron nitride nanosheet material 1㎏ was modified with 0.1wt‰ of polyvinylpyrrolidone. Then the two are mixed and stirred ultrasonically to disperse them uniformly. Then add 10Kg of natural rubber latex with a concentration of 60wt% into a clean mixing tank, and gradually add 2Kg of the previously prepared graphene / hexagonal nanosheet boron nitride compound solution with a concentration of 2.1wt‰ under stirring conditions. After the completion, an appropriate amount of 0.1wt‰ dispersi...

Embodiment 2

[0041] In the present embodiment, the method for preparing stable light-colored high thermal conductivity and high insulating condoms by bonding graphene to hexagonal nano-sheet boron nitride composite latex is as follows:

[0042] Preparation of graphene / hexagonal nanosheet boron nitride composite solution: 1㎏ graphene oxide with a concentration of 1wt‰ and an aqueous solution of graphene with a concentration of 1wt‰ are charged by electrodialysis and negatively charged. The aqueous solution containing 0.1wt‰ of hexagonal boron nitride nanosheet material 1㎏ was modified with 0.1wt‰ of sodium dodecyl sulfonate. Then the two are mixed and stirred ultrasonically to disperse them uniformly. Then add 10Kg of natural rubber latex with a concentration of 60wt% into a clean mixing tank, and gradually add 2Kg of the previously prepared graphene / hexagonal nanosheet boron nitride compound solution with a concentration of 2.1wt‰ under stirring conditions. After the completion, an approp...

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Abstract

The invention relates to the field of composite materials and medical appliances, and particularly provides a method of producing a stable and light-colored high-heat-conductive and high-isolating condom from graphene laminating hexagonal nano-lamella boron nitride compounded latex. The method includes the steps of: a) laminating and compounding graphene treated in an electric field and modified hexagonal nano-lamella boron nitride to form a stable dispersion liquid, pH being 4.5-7; b) dispersing the stable dispersion liquid in latex to compound the components with solid mass ratio being 0.005-1 wt%, thereby finally producing the condom. Being different from common graphene condoms, the condom in the invention has a stable transparent color and is not liable to have defects, such as graying, darkening, and poor weather-resistant stability, due to deterioration of graphene. The graphene is laminated with the nano-lamella boron nitride which is also called white graphene, so that tensile strength, flexibility and heat conductivity of latex are improved and permeation of virus liquid is effectively isolated, thereby producing ultrathin, high-heat-conductive and high-isolating condoms.

Description

technical field [0001] The invention relates to the field of composite materials and medical devices, in particular to a method for preparing stable light-colored condoms with high thermal conductivity and high insulation by bonding graphene to hexagonal nano-sheet boron nitride composite latex. Background technique [0002] The vast majority of condoms are made of natural latex, which has many advantages and some disadvantages, such as: latex naturally forms micropores with diameters ranging from hundreds to thousands of nanometers. [1] , Some AIDS (maximum diameter: 120nm), hepatitis B (maximum diameter 42nm), human papilloma (maximum diameter 55nm), etc. may have the chance of spreading through micropores. [0003] Both graphene and hexagonal nanosheet boron nitride are two-dimensional nanomaterials with extremely high sheet diameter / thickness ratio, good toughness and impermeability [2] . On the one hand, all modified graphene, graphene oxide and reduced graphene will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/20C08J5/00C08L7/02C08K9/04C08K3/04C08K3/38A61F6/04
CPCA61F6/04C08J3/20C08J5/00C08J5/005C08J2307/02C08K3/04C08K3/38C08K9/04C08K9/08C08K2003/385C08K2201/011C08K2201/014C08L7/02
Inventor 郑金木乔素珍张柏华
Owner 辽宁格莱菲尔健康科技有限公司