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Fully-degradable high-toughness polyvinyl alcohol composite material and preparation method thereof

A technology of polyvinyl alcohol and composite materials, applied in the field of fully degradable materials, can solve the problems of poor water resistance and difficult processing of polyvinyl alcohol

Active Publication Date: 2022-07-22
悟锐新材料科技(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides a fully degradable high-toughness polyvinyl alcohol composite material and its preparation method. The prepared polyvinyl alcohol composite material can Completely degradable, excellent toughness, and at the same time solve the problem of poor water resistance and difficult processing of polyvinyl alcohol

Method used

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  • Fully-degradable high-toughness polyvinyl alcohol composite material and preparation method thereof
  • Fully-degradable high-toughness polyvinyl alcohol composite material and preparation method thereof
  • Fully-degradable high-toughness polyvinyl alcohol composite material and preparation method thereof

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Effect test

Embodiment 1

[0035] A preparation method of modified polyvinyl alcohol, comprising the following steps:

[0036](1) be that 100:1200 nanometer attapulgite, hydrochloric acid solution are stirred and mixed by mass ratio, wherein hydrochloric acid solution is the hydrochloric acid aqueous solution of 1mol / L, heating and reacting in the stirring process, the temperature of reaction is 55 ℃, and the time of reaction is 4h, after the reaction is completed, suction filtration, use deionized water to wash to neutrality, after the washing is completed, vacuum dry, the temperature of vacuum drying is 60 ° C, and the time of vacuum drying is 6h, after drying, the activated nano attapulgite is obtained; The mass ratio of 2400:20:11 of ethylene glycol, activated nano attapulgite, and γ-aminopropyltriethoxysilane was ultrasonically dispersed, and a reaction occurred during the dispersion process. The reaction temperature was 105 °C, and the reaction time was 5h, after the reaction is completed, suction...

Embodiment 2

[0041] A preparation method of modified polyvinyl alcohol, comprising the following steps:

[0042] (1) be that the nanometer attapulgite soil and hydrochloric acid solution of 100:1800 are mixed by mass ratio, wherein the hydrochloric acid solution is the hydrochloric acid aqueous solution of 1mol / L, in the stirring process, heating is reacted, and the temperature of reaction is 60 ℃, and the time of reaction is 6h, after the reaction is completed, suction filtration, use deionized water to wash to neutrality, after the washing is completed, vacuum dry, the temperature of vacuum drying is 60 ℃, the time of vacuum drying is 6h, after drying, the activated nano attapulgite is obtained; The mass ratio of 3000:20:16 of ethylene glycol, activated nano attapulgite, and γ-aminopropyltriethoxysilane was ultrasonically dispersed, and a reaction occurred during the dispersion process. The reaction temperature was 120 °C, and the reaction time was 6h, after the reaction is completed, su...

Embodiment 3

[0047] A preparation method of modified polyvinyl alcohol, comprising the following steps:

[0048] (1) be that 100:2500 nanometer attapulgite, hydrochloric acid solution are mixed by mass ratio, wherein the hydrochloric acid solution is the hydrochloric acid aqueous solution of 1mol / L, heating and reacting in the stirring process, the temperature of reaction is 65 ℃, and the time of reaction is 8h, after the reaction is completed, suction filtration, use deionized water to wash to neutrality, after the washing is completed, vacuum dry, the temperature of vacuum drying is 60 ℃, the time of vacuum drying is 6h, after drying, the activated nano attapulgite is obtained; The mass ratio of 3600:20:21 of ethylene glycol, activated nano attapulgite, and γ-aminopropyltriethoxysilane was ultrasonically dispersed, and a reaction occurred during the dispersion process. The reaction temperature was 135 ° C, and the reaction time was 8h, after the reaction is completed, suction filtration,...

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Abstract

The invention relates to the technical field of fully-degradable materials, and discloses a preparation method of a fully-degradable high-toughness polyvinyl alcohol composite material, which comprises the following steps: carrying out melt blending on modified polyvinyl alcohol, a defoaming agent, a plasticizer and a flatting agent, and tabletting in a press vulcanizer to prepare a film, thereby obtaining the fully-degradable high-toughness polyvinyl alcohol composite material. The modified polyvinyl alcohol is prepared from nano attapulgite grafted polypropylene carbonate and polyvinyl alcohol through a reaction, nano attapulgite, polypropylene carbonate and polyvinyl alcohol all have excellent degradation performance, polyvinyl alcohol is modified through nano attapulgite grafted polypropylene carbonate, the hydrophilic performance of polyvinyl alcohol can be reduced, and the degradation performance of polyvinyl alcohol is improved. Meanwhile, the mechanical property and the thermal stability of polyvinyl alcohol are improved, and the polyvinyl alcohol composite material has the advantages of high toughness, full degradation and good thermal stability.

Description

technical field [0001] The invention relates to the technical field of fully degradable materials, in particular to a fully degradable high-toughness polyvinyl alcohol composite material and a preparation method thereof. Background technique [0002] The development of polymer materials has brought great convenience to people's lives, but the polymer materials are not easy to degrade and cause huge pollution to the environment. With the improvement of environmental awareness and the impact of sustainable development strategies, people realize that the development and use of fully degradable and environmentally friendly polymer materials is of great significance. [0003] Polyvinyl alcohol (PVA) is a water-soluble polymer material containing polyhydroxyl group. It can be completely degraded. It has excellent film-forming properties, elasticity, high tensile strength, transparency and gloss. At the same time, it has good tensile properties. Excellent gas barrier properties, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L29/04C08L87/00C08G64/42C08G83/00C08G81/02
CPCC08J5/18C08G64/42C08G83/001C08G81/027C08J2329/04C08J2387/00
Inventor 蒋春林
Owner 悟锐新材料科技(江苏)有限公司
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