High dispersion nanometer oxide/polyvinyl alcohol composite material preparation method

A nano-oxide and polyvinyl alcohol technology, which is applied in the field of preparation of nano-oxide/polyvinyl alcohol composite materials, can solve problems such as being unsuitable for large-scale application and restricting the range of polymers, and achieve enhanced elastic modulus and loss factor. The effect of reducing and increasing mechanical strength

Inactive Publication Date: 2006-02-22
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method limits the range of polymers and is not suitable for large-scale applications.

Method used

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  • High dispersion nanometer oxide/polyvinyl alcohol composite material preparation method
  • High dispersion nanometer oxide/polyvinyl alcohol composite material preparation method
  • High dispersion nanometer oxide/polyvinyl alcohol composite material preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1. Weigh 6g of activated nano-TiO 2 , add 100ml of distilled water. Shake in an ultrasonic generator for 30 min to form a uniform suspension. Then add a certain amount of ClCH 2 COOH is taken out after the reaction at a certain temperature. By repeated centrifugation, washed with distilled water until AgNO 3 Check that there is no white precipitate AgCl in the clear liquid in the upper layer of the centrifuge tube, and it is neutral. Carboxylated nano-TiO 2 The surface carboxyl group content was obtained by adding a standard amount of NaOH first, and then using the HCl standard solution to drop back.

[0027] Take 1 gram of polyvinyl alcohol, dissolve it in 50 ml of water, and under stirring, prepare a polyvinyl alcohol solution, and then add a certain amount of nano-TiO into the solution dropwise 2 suspension. It was then treated in a sonicator for 30 min. Pour it into a petri dish and dry it at 45°C, and then place it in a vacuum drying oven for 24 ...

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PUM

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Abstract

The invention provides a process for preparing nano oxide / polyvinyl alcohol composite material, which comprises carboxylating the surface of the nano oxide, making the surface of the nano oxide have -COOH radicals, interacting the radicals with -OH on the polyvinyl alcohol polymer, thus achieving nano level dispersion of the nano oxide in polyvinyl alcohol.

Description

technical field [0001] The invention relates to a preparation method of a composite material, in particular to a preparation method of a nanometer oxide / polyvinyl alcohol composite material. Background technique [0002] Polymer / inorganic particle nanocomposites can greatly improve the thermal stability of materials at low nano-inorganic particle content [1] ,Mechanical behavior [2] , molecular barrier properties [3] , flame retardancy [4] and anti-corrosion properties [5] . Polyvinyl alcohol is a water-soluble polymer, widely used in vinylon fiber, paper coating, textile pulp and various water-soluble packaging films. On the basis of maintaining the original optical transparency, improving the mechanical, heat resistance and permeability of polyvinyl alcohol films has a very broad application prospect. Highly dispersed nano-inorganic particles / polyvinyl alcohol composites can achieve this purpose. [0003] Recently, polyvinyl alcohol / clay nanocomposites have been fou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08K3/22C08J3/00
Inventor 王新平刘梅红
Owner ZHEJIANG SCI-TECH UNIV
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