Preparation method of ultrathin modified hydrotalcite and application thereof to rubber gas barrier thin film material

A thin film material and modified water technology, applied in the direction of hydrotalcite, aluminum compound, coating, etc., can solve the problem of weak interaction between hydrophilic clay and non-hydrophilic polymer, gas barrier performance limitation, and material mechanical performance reduction and other issues, to achieve the effect of improving interface compatibility, excellent gas barrier performance, and reducing free volume
CN106674572AActive Publication Date: 2017-05-17BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2017-05-17

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Abstract

The invention discloses a preparation method of ultrathin modified hydrotalcite and an application thereof to a rubber gas barrier thin film material. Firstly, coprecipitation is used for preparing ultrathin hydrotalcite with a high length diameter ratio, surface modification is carried out, spin coating method technology is used, the ultrathin modified hydrotalcite and rubber are compounded in order to form a film, and finally the gas barrier thin film material is prepared by compounding the ultrathin modified hydrotalcite and the rubber. The ultrathin hydrotalcite with a nanometer sheet shaped structure has high length diameter ratio, and can be used as a filler for substantially prolonging diffusion path of oxygen molecules in a thin film material; surface modification of hydrotalcite can improve interfacial compatibility between hydrotalcite and rubber, and reduce free volume, so that the composite thin film materials has excellent gas barrier performance, good heat stability and mechanical performance. The method has wide source, low cost, and simple preparation, and accords with environmental protection requirements; and the method has wide application prospects in the fields of automobile industry, outdoor packaging and aerospace industry.
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Description

technical field

[0001] The invention belongs to the field of inorganic / organic composite film functional materials, in particular to the preparation of an ultra-thin modified hydrotalcite and its application in rubber gas barrier film materials, and more specifically to the preparation of an ultra-thin modified hydrotalcite The method and the preparation method of the ultrathin modified hydrotalcite and rubber composite gas barrier film material. Background technique

[0002] Hydrotalcites (LDHs)-like layered compounds are a class of anionic clays that have developed rapidly in recent years, and are inorganic materials with a wide range of applications. LDHs has a layered structure similar to that of montmorillonite cationic clays, and is a compound formed by the accumulation of interlayer anions and positively charged layers. It has the characteristics of adjustable metal element ratio in the layers and exchangeable anions between layers. In recent years, LDHs colloids wit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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