Preparation method of high-strength greaseproof paper

A grease-proof paper, high-strength technology, applied in paper, papermaking, packaging paper, etc., can solve the problems of oil-proof paper, such as poor oil resistance, not easy to degrade, poor mechanical properties, etc., to increase the critical micelle concentration and improve the mechanical strength , the effect of stable performance

Inactive Publication Date: 2018-12-14
CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of high-strength oil-proof paper for the defects of poor oil-proof performance, difficult degradation and poor mechanical properties of the current oil-proof paper

Method used

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  • Preparation method of high-strength greaseproof paper

Examples

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Effect test

example 1

[0024] In parts by weight, weigh 4 parts of cesium fluoride, 11 parts of perfluoro-2-methyl-2-pentene, 4 parts of 4-bromobenzyl bromide and 20 parts of anhydrous acetonitrile into a sealed tube, and place Seal the tube and put it in a water bath with a water bath temperature of 80°C, and react at a constant temperature for 48 hours to obtain a reaction solution; mix the reaction solution with diethyl ether at a mass ratio of 1:2 to obtain a mixed gel solution, and use deionized water and saturated saline in sequence Wash 4 times, add anhydrous sodium sulfate to dry, filter to obtain the filtrate, put the filtrate in a vacuum drying oven, and dry it for 3 hours at a vacuum degree of 600Pa and a temperature of 50°C, and put it into column chromatography after drying. Separate and purify in the device to obtain the purified mixed solution, and set aside; weigh 500g of straw and bagasse and put them into a beaker, soak the straw with a 20% sodium hydroxide solution, put the beaker ...

example 2

[0026]In parts by weight, weigh 5 parts of cesium fluoride, 12 parts of perfluoro-2-methyl-2-pentene, 5 parts of 4-bromobenzyl bromide and 21 parts of anhydrous acetonitrile into a sealed tube, and place Seal the tube and put it into a water bath with a water bath temperature of 83°C, and react at a constant temperature for 48 hours to obtain a reaction solution; mix the reaction solution with ether at a mass ratio of 1:2 to obtain a mixed gel solution, and use deionized water and saturated saline in sequence Wash 5 times, add anhydrous sodium sulfate to dry, filter to obtain the filtrate, put the filtrate in a vacuum drying oven, and dry it for 3 hours at a vacuum degree of 700Pa and a temperature of 55°C, and put it into column chromatography after drying. Separate and purify in the device to obtain the purified mixed solution, and set aside; weigh 600g of straw and bagasse and put them into a beaker, soak the straw with a sodium hydroxide solution with a mass fraction of 23%...

example 3

[0028] In parts by weight, weigh 6 parts of cesium fluoride, 13 parts of perfluoro-2-methyl-2-pentene, 6 parts of 4-bromobenzyl bromide and 20-22 parts of anhydrous acetonitrile into a sealed tube , seal the sealed tube and put it in a water bath with a water bath temperature of 85°C, and react at a constant temperature for 48-49 hours to obtain a reaction solution; mix the reaction solution and diethyl ether at a mass ratio of 1:2 to obtain a mixed gel solution, and use deionized water in turn Wash with saturated brine for 6 times, add anhydrous sodium sulfate to dry, filter to obtain the filtrate, put the filtrate in a vacuum drying oven, and dry it for 4 hours under the conditions of a vacuum degree of 800Pa and a temperature of 60°C, and put it in the oven after drying. Separation and purification in a column chromatography device to obtain a purified mixed solution for subsequent use; Weigh 700g of straw and bagasse and put them into a beaker, soak the straw with a 25% sod...

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Abstract

The invention relates to a preparation method of high-strength greaseproof paper, and belongs to the technical field of greaseproof paper preparation. According to the preparation method, a fluorinated surfactant is generated firstly by using perfluoro-2-methyl-2-pentene as a raw material, carboxymethylcellulose is extracted and obtained by using straw and bagasse as the raw materials, finally thefluorinated surfactant and carboxymethylcellulose mixed with starch are mixed with other auxiliaries and stirred to obtain a dispersion glue solution, and case board paper is immersed with the dispersion glue solution, and is dried to obtain the high-strength greaseproof paper; a fluorocarbon chain can improve the greaseproof effect of the greaseproof paper and improve the biodegradability of thesurfactant, and a degraded product is toxic-free and harmless; the invention further introduces a fluorine-containing carboxylic acid group to enhance the surface activity, so that the effect of improving the greaseproof properties is achieved; negative charge carried by starch particles can be attracted to positive charge of paper base, so that the greaseproof property of the greaseproof paper is improved; at the same time, fiber filaments improve the bonding strength between the glue solution and the paper base, therefore, the greaseproof paper has broad application prospects.

Description

technical field [0001] The invention relates to a preparation method of high-strength oil-proof paper, which belongs to the technical field of oil-proof paper preparation. Background technique [0002] In our daily life, we often need to pack oily substances. The materials used to pack these substances must have good waterproof and oil-proof properties. High molecular polymers are difficult to degrade and will cause environmental pollution, so they are gradually replaced by green and environmentally friendly paper-based packaging materials. [0003] Greaseproof paper is a type of paper that is resistant to penetration by oily substances. It is made of chemical wood pulp after high-viscosity beating, and then paper-made on a fourdrinier paper machine, or coated with oil-resistant paint (casein type, varnish type, hot-melt or resin type, silicate type). As a kind of special paper with a wide range of uses, it has advantages that other packaging materials cannot match: wide s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H19/34D21H21/14D21H23/32D21H25/06D21H27/10
CPCD21H19/14D21H19/34D21H21/14D21H23/32D21H25/06D21H27/10
Inventor 谷珍菊蒋梦成陈帅
Owner CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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