Preparation method of super-hydrophobic flame-retardant recycled paper

A super-hydrophobic and recycled paper technology, which is applied in the direction of paper, water-repellent agent addition, fireproof agent addition, etc., can solve the problems of paper loss of use value, inability to be used for outdoor packaging, pollution and energy consumption, etc., and achieve low cost and good fire resistance non-toxic, good water-repellent effect

Inactive Publication Date: 2016-07-27
HUBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a convenient, easy, environmentally friendly and large-area method for preparing superhydrophobic flame-retardant recycled paper, so as to solve the problem that paper loses its use value when it encounters water, is flammable, cannot be used for outdoor packaging and storage, and pollutes the paper industry. In order to solve the problems of serious energy consumption and other problems, using the simple and easy traditional papermaking process and filler ideas, the waste paper is reused to prepare super-hydrophobic flame-retardant recycled paper. The surface contact angle is greater than 150°, and the rolling angle is less than 10°. Still won't ignite after 5 seconds of fire contact

Method used

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  • Preparation method of super-hydrophobic flame-retardant recycled paper

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Preparation of inorganic-organic composite superhydrophobic filler: add 0.02M ammonia water to the methanol solution of ethyl orthosilicate, and then add 0.1M hydrochloric acid to adjust the pH value of the solution to 5. Add 0.02g of dopamine hydrochloride powder to this solution, stir for 5 hours, then drop 3.5ml of 25% ammonia water into the system, and age for 10 hours to obtain polydopamine-silica gel. The obtained composite gel was transferred to a reaction kettle, n-hexane solvent and hexamethyldisilazane (volume ratio: 20:3) were added, and reacted at 80°C for 10 hours. Take it out, filter it with suction and wash it with n-propanol several times, so as to complete the step of modifying the hydrophobic substance. The superhydrophobic gel was then placed in an oven and dried at 60°C for 6 hours in order to remove the solvent and residual reactants. Then grind the dry gel to obtain inorganic-organic composite superhydrophobic filler powder.

[0028] (2) Prep...

Embodiment 2

[0032] (1) Preparation of inorganic-organic composite superhydrophobic filler: add 0.02M ammonia water to the methanol solution of ethyl orthosilicate, and then add 0.1M hydrochloric acid to adjust the pH value of the solution to 5. Add 0.02g of dopamine hydrochloride powder to this solution, stir for 5 hours, then drop 3.5ml of 25% ammonia water into the system, and age for 14 hours to obtain polydopamine-silica gel. The obtained composite gel was transferred to a reaction kettle, n-hexane solvent and hexamethyldisilazane (volume ratio: 20:3) were added, and reacted at 80°C for 10 hours. Take it out, filter it with suction and wash it with n-propanol several times, so as to complete the step of modifying the hydrophobic substance. The superhydrophobic gel was then placed in an oven and dried at 60°C for 6 hours in order to remove the solvent and residual reactants. Then grind the dry gel to obtain inorganic-organic composite superhydrophobic filler powder.

[0033] (2) Prep...

Embodiment 3

[0036](1) Preparation of inorganic-organic composite superhydrophobic filler: add 0.02M ammonia water to the methanol solution of ethyl orthosilicate, and then add 0.1M hydrochloric acid to adjust the pH value of the solution to 5. Add 0.02g of dopamine hydrochloride powder to this solution, stir for 5 hours, then drop 3.5ml of 25% ammonia water into the system, and age for 10 hours to obtain polydopamine-silica gel. The obtained composite gel was transferred to a reaction kettle, n-hexane solvent and hexamethyldisilazane (volume ratio: 20:3) were added, and reacted at 80°C for 10 hours. Take it out, filter it with suction and wash it with n-propanol several times, so as to complete the step of modifying the hydrophobic substance. The superhydrophobic gel was then placed in an oven and dried at 60°C for 6 hours in order to remove the solvent and residual reactants. Then grind the dry gel to obtain inorganic-organic composite superhydrophobic filler powder.

[0037] (2) Prepa...

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Abstract

The invention belongs to the technical field of preparation of super-hydrophobic natural flame-retardant materials and particularly relates to a preparation method of super-hydrophobic flame-retardant recycled paper.The method includes the steps of preparation of an inorganic-organic compound super-hydrophobic filling material, preparation of a hydrophobic flame retardant, preparation of super-hydrophobic flame-retardant recycled paper and other steps.A contact angle of the super-hydrophobic flame-retardant recycled paper is 150 degrees, and a rolling angle of the paper is 10 degrees.The super-hydrophobic flame-retardant recycled paper has a good flame-retardant effect, the original writing performance, bendability and other properties of the paper are retained, and no influence is produced on daily usage.In addition, the super-hydrophobic flame-retardant recycled paper has very good self-cleaning performance and antifouling performance, meanwhile has super-lipophilicity and can be used for separation of oil-water mixtures.Furthermore, the material can be extracted from water by using waste oil, and secondary utilization can be achieved.The preparation method is simple, the raw materials are easy to obtain, the recycled paper is non-toxic, environmentally friendly, low in cost, good in stability and suitable for large-scale preparation, the application range of the paper is widened, and the energy source crisis and ecological crisis brought by the papermaking industry are also eased.

Description

technical field [0001] The invention belongs to the technical field of preparation of superhydrophobic materials, and in particular relates to the secondary utilization of waste paper and a method for preparing superhydrophobic flame-retardant regenerated paper using the idea of ​​superhydrophobic fillers and flame retardants. Background technique [0002] Inspired by nature, superhydrophobic surfaces have gradually attracted people's attention, such as lotus leaf surfaces, butterfly wings, water strider legs, etc., all of which have the property of not being wetted by water. Superhydrophobic surfaces have many unique and excellent surface properties: waterproof, self-cleaning, anti-corrosion, anti-icing, anti-fog and other properties, making them have great application prospects in many fields. [0003] Water and fire have always been the two major killers of daily paper products. Once the paper is wetted, it loses its strength, writing and aesthetics. And fire can be dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21H21/16D21H21/34
CPCD21H11/14D21H21/16D21H21/34
Inventor 郭志光司一帆
Owner HUBEI UNIV
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