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Composite paper containing straw fiber composite film and preparation method of composite paper

A composite film and straw fiber technology, applied in chemical instruments and methods, packaging paper, sustainable manufacturing/processing, etc., can solve the problem of incompatibility of mechanical strength and air permeability, and achieve good tensile strength and good air permeability Effect

Inactive Publication Date: 2018-03-23
WUHU BLUE SKY ENG PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a composite paper containing straw fiber composite film and its preparation method, which solves the problem that the composite film made of straw as raw material overcomes the incompatibility of mechanical strength and air permeability. The composite film in the composite paper of the straw fiber composite film not only has good tensile strength, but also has good air permeability, and the preparation method is simple and easy to realize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The invention provides a method for preparing composite paper containing straw fiber composite film. The preparation method comprises: (1) crushing straw, dispersing it in water, adding TEMPO (2,2,6,6-tetramethyl- 1-piperidine-N-oxyl) and hypochlorite are oxidized and dried; (2) the dried oxidized straw, polyacrylate and organic solvent are mixed, and then softened to obtain straw mixture; (3) mixing straw mixture, polypropylene, citric acid, sodium dihydrogen phosphate, polyethylene wax, hexabromobenzene and ethylene glycol, and then pre-pressing, hot pressing and sanding to prepare a film; (4 ) The film is heated and hot-pressed on the surface of the paper layer.

[0016] Through the above technical scheme, the present invention provides a composite paper containing straw fiber composite film and a preparation method thereof, the preparation method comprising: (1) crushing the straw, dispersing it in water, and adding it to TEMPO (2,2,6, 6-tetramethyl-1-piperidine-N-...

preparation example 1

[0036] In parts by weight, crush 20 parts of straw (the length of the crushed straw is not more than 2cm), disperse in 50 parts of water, add TEMPO (2,2,6,6-tetramethyl-1-piperidine-N- Oxygen) 5 parts, hypochlorite 3 parts are subjected to oxidation treatment (pH is 12, treatment time is 2h, temperature is 70 ℃), wherein, use sodium hydroxide as pH adjusting agent, dry after oxidation treatment.

preparation example 2

[0038] In parts by weight, crush 20 parts of straw (the length of the crushed straw is not more than 2cm), disperse it in 100 parts of water, add TEMPO (2,2,6,6-tetramethyl-1-piperidine-N- 7 parts of oxygen) and 4 parts of hypochlorite were oxidized (pH 14, treatment time 1 h, temperature 40° C.), wherein sodium hydroxide was used as a pH regulator, and dried after oxidative treatment.

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Abstract

The invention discloses a preparation method of composite paper containing a straw fiber composite film. The preparation method includes the steps that straw is smashed, is dispersed in water, is subjected to oxidizing treatment under the condition that TEMPO (2,2,6,6-Tetramethylpiperidin-1-yl)oxy and hypochlorite exist, and is dried; secondly, the dried oxidized straw, polyacrylate and an organicsolvent are mixed, then softening is performed, and a straw mixture is obtained; thirdly, the straw mixture, polypropylene, citric acid, sodium dihydrogen phosphate, polyethylene wax, hexabromobenzene and ethylene glycol are mixed, then pre-pressing, hot pressing and sanding are performed, and the film is made; and fourthly, the film is heated and is pressed onto the surface of a paper layer in ahot pressing manner, and the composite paper containing the straw fiber composite film is made. The composite film has good tensile strength, also has good gas permeability and is very suitable for preparing packaging materials of fruits and vegetables.

Description

technical field [0001] The invention relates to the field of preparation of straw materials, in particular to a composite paper containing straw fiber composite film and a preparation method thereof. Background technique [0002] Any kind of packaging material, including plastic film or edible film, is very important to determine the permeability of oxygen, nitrogen, carbon dioxide and water vapor, especially the packaging material used for fresh fruit and vegetable preservation, its air permeability is very important, because it has A film with suitable air permeability can regulate the physiological metabolism of fruits and vegetables to a certain extent, thereby improving the eating quality of fruits and vegetables and prolonging the shelf life of fruits and vegetables. In this regard, in order to obtain materials with good air permeability, people have carried out Extensive research. [0003] Chinese patent application 201110203184.8 discloses a composition and a prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40C08L23/12C08L97/02C08L33/08C08L23/06C08K13/02C08K5/092C08K3/32C08K5/03C08K5/053C08J5/18B32B37/10B32B37/06
CPCB32B37/06B32B37/10B32B2307/54B32B2307/724B65D65/40C08J5/18C08J2323/12C08J2433/08C08J2497/02C08K5/03C08K5/053C08K5/092C08K2003/324Y02W90/10
Inventor 钱万水
Owner WUHU BLUE SKY ENG PLASTIC CO LTD