Novel environment-friendly waterproof and oil-proof paper and preparation method thereof

An oil-proof paper and environmental protection technology, applied in the field of paper, paper and paper manufacturing, can solve the problems of human harm, limited popularization and application, poor mechanical properties, etc., and achieve easy operation, high degree of recyclability, and human safety high effect

Inactive Publication Date: 2018-04-24
东莞市石龙联兴实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, studies have found that perfluorooctanesulfonyl compounds (PFOS), an important raw material and intermediate used to prepare fluorine-containing oil repellents, are bioaccumulative and harmful to humans, and ordinary waterproof and greaseproof paper has poor mechanical properties , limiting their generalization and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The new environment-friendly waterproof and oil-proof paper includes ordinary paper layer and coating layer. The coating layer is evenly coated on the upper and lower sides of the ordinary paper layer. The coating layer is composed of the following ingredients in weight percentage: anion modified starch 5%, chitosan 2%, fluorine Plain paper oil repellant 1.2%, alkyl ketene dimer 0.8%, tap water 91%

[0023] The preparation method of the new environment-friendly waterproof and oil-proof paper, the preparation method includes the following steps: the first step is to disperse the anionic modified starch into water, and perform ultrasonic oscillation in an ultrasonic cleaning machine, control the ultrasonic power to 2000W, and the frequency to 800HZ, and vibrate The time is 5min, disperse evenly, the homogeneous aqueous solution that forms; The second step, under the mechanical stirring condition that stirring speed is 800r / min, add chitosan, fluorine paper product oil repe...

Embodiment 2

[0025] Take 8% of anionic modified starch, 1% of polyamide polyepichlorohydrin resin, 1% of fluorine paper oil repellent and fluorocarbon water and oil repellent (mass ratio 1:1), 1% of carboxymethyl cellulose and tap water 89%.

[0026] Disperse the anion-modified starch into water, perform ultrasonic oscillation in an ultrasonic cleaning machine, control the ultrasonic power to 2000W, the frequency to 1000HZ, and the oscillation time to 10min, disperse evenly, and form a uniform aqueous solution, then, at a stirring speed of 1500r / Under the condition of mechanical stirring for min, add polyamide polyepichlorohydrin resin, fluorine paper oil repellent, fluorocarbon water and oil repellent (mass ratio 1:1) and carboxymethyl cellulose, and keep the above ultrasonic conditions for oscillation 15min, heating 85 o Stir for 3.5 h under the condition of C to obtain a waterproof and oil-repellent coating; then, evenly coat the prepared waterproof and oil-proof coating on both sides...

Embodiment 3

[0028] Take 5% cationic modified starch, 3% chitosan and polyethyleneimine (mass ratio 1:1), 2% fluorocarbon water and oil repellent, 5% carboxymethyl cellulose and 85% tap water.

[0029] Disperse cationic modified starch into water, perform ultrasonic oscillation in an ultrasonic cleaning machine, control the ultrasonic power to 2000W, frequency to 800HZ, oscillation time to 15min, disperse evenly, and form a homogeneous aqueous solution, then, at a stirring speed of 500r / Under the condition of mechanical stirring for 1 min, add chitosan and polyethyleneimine (mass ratio 1:1), fluorocarbon water and oil repellent and carboxymethyl cellulose, maintain the above ultrasonic conditions for 15 min, and heat for 90 min. o Stir for 3.5 h under the condition of C to obtain a waterproof and oil-repellent coating; then, evenly coat the prepared waterproof and oil-proof coating on both sides of the paper, place the coated paper in an oven at a temperature of 100 o Under C, dry for 10 ...

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PUM

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Abstract

The invention relates to novel environment-friendly waterproof and oil-proof paper and a preparation method thereof, belonging to the field of paper materials. The novel environment-friendly waterproof and oil-proof paper comprises a common paper layer and coating layers, wherein the upper face and the lower face of the common paper layer are respectively and evenly coated with the coating layers;the coating layers are respectively prepared from the following materials by weight percent: 2-10% of modified starch, 0.5-5% of a wet strength agent, 0.2-5% of an oil-proofing agent, 0.3-5% of a paper-making sizing agent and 75-97% of water; the waterproof and oil-proof coating layers are prepared by mainly taking the modified starch as a surface sizing agent and cooperatively using a small amount of the wet strength agent, oil-proofing agent and paper-making sizing agent; the waterproof and oil-proof coating layers are good in adhesiveness on the surfaces of the paper, can form films on thesurface of the paper and fills the gaps between fibers; therefore, the surface and internal conditions of the paper are improved to the different extents, and the water resistance, oil resistance andmechanical properties of the paper are improved to the different extents.

Description

technical field [0001] The invention relates to the field of paper materials, in particular to the field of functional paper materials and the manufacture of paper materials. Background technique [0002] In daily life, we often need to pack oily substances, such as fast food such as hamburgers, pizza, and fried dough sticks. The materials used to pack these substances must have good water and oil repellency. In order to achieve the purpose of oil prevention, plastic containers or films such as polyethylene and polypropylene have been widely used. These synthetic polymers are difficult to degrade and cause environmental pollution, so they are gradually replaced by green and environmentally friendly paper-based packaging materials. [0003] Paper-based packaging materials are not oil-proof, and fluorine-containing oil-repellent agents are widely used to give them good oil-repellent properties. However, in recent years, studies have found that perfluorooctanesulfonyl compou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H19/14D21H19/24D21H19/84
Inventor 张锦明
Owner 东莞市石龙联兴实业有限公司
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