A barrier flame-retardant polyvinyl alcohol composite material and its preparation method

A technology of polyvinyl alcohol and composite materials, applied in the field of composite materials, can solve the problems of poor flame retardancy and barrier properties, and achieve the effects of low cost, flammability and easy industrial production
CN108485140BActive Publication Date: 2020-09-01SOUTHWEST PETROLEUM UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST PETROLEUM UNIV
Publication Date
2020-09-01

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Abstract

The invention discloses a barrier flame-retardant polyvinyl alcohol composite material. The barrier flame-retardant polyvinyl alcohol composite material is prepared from the following raw materials: polyvinyl alcohol, graphene oxide, alpha-zirconium phosphate and sulfonated polyphosphonitrile microspheres by virtue of an intercalation-solution compositing method. The preparation method comprises the following steps: S1, ultrasonically dispersing the graphene oxide, alpha-zirconium phosphate and sulfonated polyphosphonitrile microspheres in the water, and obtaining a mixed solution system; S2,dissolving the polyvinyl alcohol in hot water, and obtaining a polyvinyl alcohol aqueous solution; and adding the mixed solution system obtained in S1 into the polyvinyl alcohol aqueous solution, stirring for 5 to 10 hours, and obtaining polyvinyl alcohol / sulfonated polyphosphonitrile / alpha-zirconium phosphate / graphene oxide mixed solution; and S3, pouring the mixed solution obtained in step S2 into a glass mold, drying in an non-isothermal manner, and obtaining the polyvinyl alcohol composite material. By introducing the sulfonated polyphosphonitrile microspheres, graphene oxide and alpha-zirconium phosphate with different structural characteristics, the polyvinyl alcohol material has relatively good barrier performance and flame retardant performance and can improve the comprehensive performance.
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Description

technical field

[0001] The invention belongs to the technical field of composite materials, and in particular relates to a barrier and flame-retardant polyvinyl alcohol composite material and a preparation method thereof. Background technique

[0002] Polyvinyl alcohol (PVA) is the hydrolysis product of polyvinyl acetate. It is an odorless and non-toxic synthetic polymer. It has three forms of flake, floc or powder solid. The molecular structure is relatively regular. crystalline polymer. With the different structure, degree of alcoholysis and degree of polymerization of PVA, it has diversified properties. Such as good barrier properties, film-forming properties, biodegradability, solubility, etc., are widely used in food packaging, washing packaging and chemical packaging.

[0003] However, polyvinyl alcohol materials also have the common properties of plastic materials, that is, they are easy to burn, and polyvinyl alcohol materials for films have extremely high requirem...

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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