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Method for testing nano material dispersivity in rubber

A nanomaterial, dispersive technology, applied in measuring devices, particle size analysis, particle and sedimentation analysis, etc., can solve the problem of inability to obtain nanoscale rubber slices

Inactive Publication Date: 2005-01-26
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] (1) "Rubber Industry" 2003, 50 (1): 15-18 discloses that the mixed rubber is made into a strip sample by the hard glue method, and the microtome is sliced ​​for observation under an electron microscope, but the butadiene rubber is processed at room temperature It is impossible to obtain nano-scale rubber slices;

Method used

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  • Method for testing nano material dispersivity in rubber
  • Method for testing nano material dispersivity in rubber
  • Method for testing nano material dispersivity in rubber

Examples

Experimental program
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Embodiment 1

[0023] sample:

[0024] The basic formula of rubber is:

[0025] 100 parts of natural rubber, 2.5 parts of sulfur, 1.0 parts of stearic acid, 1.5 parts of accelerator M, 1.0 parts of accelerator D, 1.0 parts of anti-aging agent D, 5.0 parts of nano zinc oxide.

[0026] The above-mentioned rubber sample was frozen to -130°C with liquid nitrogen for 25 minutes, and then placed on a commercial cryostat slicer. According to the size of the nano-zinc oxide particle size, the rubber was cut into thicknesses of 60 nm rubber flakes, and then use transmission electron microscopy, the results are shown in figure 2 .

Embodiment 2

[0028] Adopt the method identical with embodiment 1, the basic formula of rubber is as follows:

[0029] 100 parts of styrene-butadiene rubber 1502, 1.75 parts of sulfur, 1.0 parts of stearic acid, 1.0 parts of accelerator NS, 3.0 parts of nano zinc oxide.

[0030] The above-mentioned rubber sample was frozen to -115°C with liquid nitrogen for 20 minutes, and then placed on a commercial cryostat slicer. According to the particle size of the nano-zinc oxide, the rubber was cut into thicknesses of 80 nm rubber flakes, and then use transmission electron microscopy, the results are shown in image 3 .

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Abstract

This invention discloses a method for measuring the dispersibility of nanometre material in rubber. The steps are the following: first to freeze the rubber with millimicron zinc oxide powder through refrigerant to the temperature 115 to 130 below zero for twenty to forty minutes; then to put it on the slicer of freezing-microtome commercialization and cut the rubber into thin slices about fifty to ninety nanometer according to the particle size of millimicron zinc oxide; and to scan it with electricity mirror by usual method so to obtain the datum of dispersibility of millimicron zinc oxide powder in rubber and to guide production.

Description

technical field [0001] The invention relates to a method for testing the dispersibility of nanometer materials in rubber, in particular to a method for testing the dispersibility of nanometer zinc oxide in rubber. Background technique [0002] In the rubber industry, zinc oxide is mainly used as a vulcanization activator for rubber, and sometimes as a filler to improve the modulus, hardness and thermal conductivity of rubber. In recent years, nano-zinc oxide materials have been widely used in the field of rubber, endowing rubber products with new qualities. At the same time, due to the characteristics of nanomaterials, their dispersion in rubber has also attracted people's attention. [0003] At present, the commonly used methods for testing the dispersion of nanomaterials in rubber usually include the following: [0004] (1) "Rubber Industry" 2003, 50 (1): 15-18 discloses that the mixed rubber is made into a strip sample by the hard glue method, and the microtome is slice...

Claims

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Application Information

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IPC IPC(8): C08L7/00G01N1/06G01N15/02
Inventor 陈月辉
Owner SHANGHAI UNIV OF ENG SCI