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High-strength antistatic emulsion composite and preparation and application thereof

A composite material and high-strength technology, applied in the field of preparation of polymer nanocomposite materials, can solve problems such as low production efficiency, unstable quality, and reduced mechanical properties of products

Active Publication Date: 2016-07-13
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in the rubber industry, latex products have a large production scale in our country, but there are also shortcomings such as low technical content and unstable quality.
Modification of latex products by adding inorganic fillers in latex will lead to industrial production of inorganic fillers that are easy to deposit and difficult to impregnate, and the production efficiency is low, and the accumulation of inorganic fillers is easy to cause defects in the products and reduce the mechanical properties of the products. question
At present, there are few Chinese patents on inorganic filler modified latex

Method used

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  • High-strength antistatic emulsion composite and preparation and application thereof
  • High-strength antistatic emulsion composite and preparation and application thereof
  • High-strength antistatic emulsion composite and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Mechanically grind PVP / CNTs with a weight ratio of 3:1 for 15 minutes, add an appropriate amount of water according to the concentration of carbon nanotubes at 0.5 mg / ml, and ultrasonically disperse for 15 minutes to obtain a uniformly dispersed mixed solution. Add the above-mentioned CNTs of 0.5% mass fraction in latex, join in dry rubber content in the pre-vulcanized centrifugal latex of 45%, stir 30min, configure the dry rubber content in the pre-vulcanized centrifugal latex of 45%, absorb a small amount of blended solution, Add it dropwise on the PE film, and use the surface tension of the blend itself to control the thickness and size of the droplet.

Embodiment 2 and comparative example 2

[0041] Changes in the dispersion of CNTs after treatment

Embodiment 2

[0042] Example 2: Mechanically grind PVP / CNTs with a weight ratio of 3:1 for 15 minutes, add an appropriate amount of water by weight, and ultrasonically disperse for 15 minutes to obtain a uniformly dispersed mixed solution. Add 0.5% mass fraction of the above CNTs to the latex, add it to the pre-vulcanized centrifugal latex with a dry rubber content of 45%, stir for 30 minutes, and configure the pre-vulcanized centrifugal latex with a dry rubber content of 35% to vulcanize according to the conventional linkage production line of latex Method to prepare latex products.

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Abstract

The invention relates to a high-strength antistatic emulsion composite and preparation and application thereof and belongs to the field of preparation of polymer nano composites.The high-strength antistatic emulsion composite is made by: physically coating the surface of carbon nanotubes with a water-soluble polymer by using a simple mechanical grinding method, adding the carbon nanotubes into an aqueous solution for ultrasonic treatment, mixing carbon nanotube dispersion and pre-vulcanized emulsion, and mixing well by mechanical stirring to obtain an emulsion; the stability of the emulsion is high such that the properties of CNTs can be given to full play, the viscosity of an emulsion system is not increased, and leveling performance is good; impregnation film laying process may be employed, the composite is also suitable for impregnation production on a linkage line, large-scale production of emulsion products is facilitated, and emulsion products are high in strength, piercing-resistant and antistatic.

Description

technical field [0001] The invention relates to a high-strength, antistatic latex composite material, its preparation and application, and belongs to the field of polymer nanocomposite preparation. Background technique [0002] Carbon nanotubes (CNTs) are not only due to their unique structure and properties such as high flexibility, low mass density and large aspect ratio (usually 300-1000), but also because of their excellent electrical properties, thermal conductivity and high mechanical strength. The conductivity of a single bundle of carbon nanotubes can reach 10 4 The value of S / cm is related to the conductivity of the metal (copper is 59×10 4 S / cm, iron is 9.9×10 4 S / cm) is close, and the density of carbon nanotubes is very low, which can also greatly reduce the weight. As we all know, carbon materials usually have high thermal conductivity, and carbon nanotubes (the experimental measurement value of the thermal conductivity of a single nanotube is 3000W / (m·K), and...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08L39/04C08K9/10C08K7/24
CPCC08L7/02C08L2201/04C08L39/04C08K9/10C08K7/24
Inventor 华静耿洁婷薛梅玉金鑫铮武歧
Owner QINGDAO UNIV OF SCI & TECH