A preparation method and product of graphite microflake/natural rubber latex composite material

A technology of graphite microflakes and natural rubber latex, which is applied in the field of preparation of graphite microflakes/natural latex composite materials, can solve the problems of high price, limited improvement of mechanical strength and thermal conductivity/conductivity, and scarce output, so as to improve mechanical properties Effect

Active Publication Date: 2021-10-22
SOUTH SUBTROPICAL CROPS RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-performance rubber composite materials are mainly obtained by adding graphene, but at present, graphene in the true sense is immature due to its industrial-level macro-production process, the output is scarce and expensive, and graphene natural rubber latex condoms cannot be mass-produced. Mass adoption is still far away
In the face of the high function, low cost and industrialization of natural latex film products, in order to overcome the shortcomings of existing graphene due to low output and high cost, it is very important to develop natural latex reinforcement materials with low cost, high reinforcement and easy industrial production. necessary
[0004] In addition, the application of graphene in natural rubber latex is limited to thermally conductive fillers, and the improvement of the mechanical strength and thermal / conductive conductivity of natural rubber latex by graphene is limited, which does not match the economic cost and process difficulty.
Other functions of graphite materials (including graphene) such as lubricity, antibacterial, antiviral and other properties are far from being brought into play

Method used

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  • A preparation method and product of graphite microflake/natural rubber latex composite material
  • A preparation method and product of graphite microflake/natural rubber latex composite material
  • A preparation method and product of graphite microflake/natural rubber latex composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of nanographite microflakes:

[0036] Add 100g of expanded graphite and 0.1g of sodium dodecylbenzenesulfonate into a ball milling tank, add 2500mL of distilled water and 800g of agate ball milling beads, set the speed of the ball mill at 300r / min, and mill for 24 hours to prepare nano-graphite microflakes.

[0037] It is determined that the diameter of the prepared nano-graphite is 2000-5000nm, the thickness is 10-20nm, and the diameter-thickness ratio is (100-500):1.

[0038] (2) Fe 3 o 4 Preparation of @graphite microchips:

[0039] The nano graphite flakes prepared by step (1) are uniformly dispersed in 1000mL water to make nano graphite flake suspension, wherein the content of nano graphite flakes is 0.0336g / mL; the preparation contains 0.2molFeCl 3 and 0.1molFeCl 2 100mL of the mixed solution; inject the uniformly dispersed nano-graphite microplate suspension into FeCl 3 and FeCl 2 In the mixed solution, under the power of 1000W, ultrasonically...

Embodiment 2

[0045] (1) Preparation of nanographite microflakes:

[0046] Add 100g of expanded graphite and 0.5g of sodium dodecylbenzenesulfonate into a ball milling tank, add 2500mL of distilled water and 800g of agate ball milling beads, set the speed of the ball mill to 400r / min, and mill for 26 hours to prepare nanographite microflakes.

[0047] It is determined that the diameter of the prepared nano-graphite is 2000-5000nm, the thickness is 10-20nm, and the diameter-thickness ratio is (100-500):1.

[0048] (2) Fe 3 o 4 Preparation of @graphite microchips:

[0049] The nano graphite flakes prepared by step (1) are uniformly dispersed in 1000mL water to make nano graphite flake suspension, wherein the content of nano graphite flakes is 0.0168g / mL; the preparation contains 0.2molFeCl 3 and 0.1molFeCl 2 100mL of the mixed solution; inject the uniformly dispersed nano-graphite microplate suspension into FeCl 3 and FeCl 2 In the mixed solution, ultrasonically oscillate and mechanical...

Embodiment 3

[0055] (1) Preparation of nanographite microflakes:

[0056] Add 100g of expanded graphite and 1g of phosphoric acid ester into a ball mill jar, add 2500mL of distilled water and 800g of agate ball milling beads, set the speed of the ball mill at 500r / min, and mill for 36h to prepare nano-graphite microflakes.

[0057] It is determined that the diameter of the prepared nano-graphite is 2000-5000nm, the thickness is 10-20nm, and the diameter-thickness ratio is (100-500):1.

[0058] (2) Fe 3 o 4 Preparation of @graphite microchips:

[0059] The nano graphite flakes prepared by step (1) are uniformly dispersed in 1000mL water to make nano graphite flake suspension, wherein the content of nano graphite flakes is 0.0252g / mL; the preparation contains 0.2molFeCl 3 and 0.1molFeCl 2 100mL of the mixed solution; inject the uniformly dispersed nano-graphite microplate suspension into FeCl 3 and FeCl 2 In the mixed solution, ultrasonically oscillate and mechanically stir under the p...

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Abstract

The invention discloses a preparation method and a product of a graphite microchip / natural rubber latex composite material. It is specifically disclosed that the Fe 3 o 4 Nanoparticles supported on nanographite microflakes to produce Fe 3 o 4 @Graphite microchip; to Fe 3 o 4 @Graphite microchips are modified for surface functionalization; then the modified Fe 3 o 4 Add graphite microflakes to natural rubber latex, mix evenly, and apply a magnetic field during the mixing process to prepare graphite microflakes / natural latex composite materials. The present invention utilizes the nano-graphite flakes of large diameter-to-thickness ratio as a new type of nano-reinforced filler in natural latex, and utilizes an external magnetic field to fill in the magnetic Fe in natural latex. 3 o 4 @Nanographite microflakes are oriented and induced to arrange and improve their dispersion effect, realizing the orderly compounding of nanographite microflakes and natural latex, giving full play to the characteristics of nanographite microflakes and improving the mechanical properties of natural latex.

Description

technical field [0001] The invention relates to the field of natural latex composite materials, in particular to a preparation method and product of graphite microchip / natural latex composite materials. Background technique [0002] Natural latex is a natural biosynthetic polymer with cis-1,4-polyisoprene as the main component. It has good elasticity and film-forming properties, so it is widely used in the production of film products. In order to obtain film products with thinner thickness, more comfortable touch and higher safety, the material must have higher mechanical strength, better air tightness and barrier properties, and better lubricity. Therefore, the raw material natural rubber latex must be modified. Make enhancements. [0003] At present, nanotechnology is mainly used at home and abroad to blend and modify natural rubber latex to obtain high-performance rubber composite materials. High-performance rubber composite materials are mainly obtained by adding graph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/28C08J3/21C08L7/02C08K9/04C08K3/04C08K3/22
CPCC08J3/212C08J3/28C08J2307/02C08K9/04C08K9/08C08K2003/2275C08K2201/011C08K3/046
Inventor 刘运浩吕明哲李普旺杨子明王超何祖宇周闯宋书会
Owner SOUTH SUBTROPICAL CROPS RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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