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Waterproof and oil-proof agent prepared by using fluorocarbon grated starch and preparation method thereof

A waterproof and oil-repellent agent, grafted starch technology, applied in chemical instruments and methods, other chemical processes, paper, etc., can solve the problems of high synthesis cost, easy to absorb oil, easy to charge clothing, etc., to reduce surface energy, prevent Effect of flocculation and sedimentation, reduction of production cost

Inactive Publication Date: 2011-11-16
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) Used as a finishing agent for fabrics. When polyester fibers are used as clothing materials, they cannot absorb sweat, easily absorb oil stains, and clothing materials are easily charged.
At present, the main synthesis methods of fluorine-containing oil repellents are solution polymerization and emulsion polymerization. Solution polymerization requires the use of fluorine-containing organic solvents. The synthesis cost is high and causes environmental problems. The current research focuses on emulsion polymerization.
However, the currently synthesized anti-oil agents are all based on petrochemical products, which are high in cost and difficult to degrade, which have become the main obstacles to their popularization and application.
The applicant searched the relevant literature at home and abroad, and found no technology to synthesize the oil-repellent by grafting starch with fluorine-containing monomers

Method used

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  • Waterproof and oil-proof agent prepared by using fluorocarbon grated starch and preparation method thereof
  • Waterproof and oil-proof agent prepared by using fluorocarbon grated starch and preparation method thereof
  • Waterproof and oil-proof agent prepared by using fluorocarbon grated starch and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0107] Add 200 grams of tapioca starch and 4 liters of distilled water that has been driven by nitrogen into a reactor with a capacity of 10 liters. After stirring and gelatinizing at 90 ° C for 30 minutes, the evaporated water is replenished with distilled water that has been driven by nitrogen to make it Reach the quality before gelatinization, and cool to 25°C, then add a mixture consisting of 20 grams of perfluorooctyl (10) ethoxy ether alcohol and 20 grams of perfluorooctyl sodium sulfonate, and then start the stirring device, 5 After 50 minutes, add 50 grams of ceric sulfate, then raise the temperature to 40°C, then add 200 grams of 12 fluorooctyl acrylate to form a free radical copolymerization reaction, keep the reaction temperature at 40°C, stop stirring after 5 hours, and obtain the product of the present invention, fluorocarbon Grafted starch water and oil repellent (4423 grams).

Embodiment 2

[0109] Add 160 grams of cationic tapioca starch and 4 liters of distilled water into a reactor with a capacity of 10 liters, stir and gelatinize at 60° C. for 30 minutes, supplement the volatile moisture with distilled water to make it reach the quality before gelatinization, and Cool to 20°C, then add 20 grams of perfluorobutyl-5-ethoxyether alcohol nonionic fluorosurfactant and 20 grams of 12-fluorobetaine surfactant, start the stirring device, and add sodium persulfate 50 grams after 5 minutes gram, then warming up to 40°C, then adding 200 grams of butyl octafluoroacrylate to form a free radical copolymerization reaction, keeping the reaction temperature at 40°C, and after 6 hours of stirring reaction, the product of the present invention, the fluorocarbon grafted starch waterproof and oil-repellent agent (4405 grams).

Embodiment 3

[0111] Add 200 grams of cornstarch and 4 liters of distilled water into a 10-liter reactor, stir and gelatinize at 70°C for 30 minutes, then supplement the evaporated water with distilled water to make it reach the quality before gelatinization, and cool to 27 ℃, then add a mixed emulsifier composed of 20 grams of perfluorodecyl-20-ethoxyether alcohol nonionic fluorosurfactant and 10 grams of sodium 16 fluorododecylbenzenesulfonate, start the stirring device, and after 5 minutes Add 60 grams of ammonium persulfate, then raise the temperature to 50°C, then add 200 grams of heptyl decafluoroacrylate to form a free radical copolymerization reaction, maintain the reaction temperature at 50°C, and after 6 hours of stirring reaction, the product of the present invention is obtained. Starch Water and Oil Repellent (4431g).

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Abstract

The invention claims a waterproof and oil-proof agent prepared by using fluorocarbon grated starch. The preparation method of the waterproof and oil-proof agent comprises the following steps of: using the starch as the raw material, pasting the starch and initiating the starch by a free-radial initiator; in the emulsion system, polymerizing and grating the fluorine-containing monomer and the starch for 3 to 10 hours at the constant polymerization temperature of 40 to 95 DEG C. The waterproof and oil-proof agent of the invention can be applied to the pulp and paper making process, improves theretention rate of the small fibres when being added to the inner wet part of the paper pulp and improves the smoothness of the paper surface when being coated on the paper surface. The invention alsocan be applied to the textile and is used for the sizing material, the thickening agent for printing and dyeing, and the finishing agent of textile.

Description

technical field [0001] The invention relates to a waterproof and oil-repellent agent, in particular to a fluorocarbon grafted starch waterproof and oil-repellent agent which can be used on the fiber surface. Background technique [0002] Organic fluorine is an excellent waterproof and oil-proof material. It uses the special surface properties of fluorine compounds to achieve the purpose of waterproof and oil-proof. Paper treated with fluorine compounds can not only obtain excellent waterproof and oil-proof effects, but also keep the paper The original air permeability, softness, strength, color and printing performance, with starch as the main material and the skeleton of the structure, make this oil-proof paper easy to biodegrade and waste paper regeneration, and the presence of functional groups of fluorine compounds makes the paper The substance can effectively reduce the surface tension, which is why fluorine-containing polymers have become a type of high-efficiency oil-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/00D21H17/28C09K3/18D06M15/11
Inventor 朱红祥王双飞殷国栋宋海农覃程荣李许生宋雪萍杨崎峰黄崇杏
Owner GUANGXI UNIV