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Preparation method of degradable plastic filling material taking waste bank note paper as substrate

A technology for degrading plastics and banknote paper, applied in the field of preparation of degradable plastic fillers, to achieve the effects of improving fragility, color stability, and mechanical strength

Active Publication Date: 2015-09-09
FUJIAN REIDA PRECISION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Aiming at the problem that an effective utilization method that can make full use of banknote paper resources and reduce secondary pollution in the recycling process has not yet been found, the invention discloses a preparation method of a degradable plastic filler using banknote paper as a base material , in order to give full play to the advantages of high-quality fiber raw materials and good water resistance of banknote paper, simplify the preparation process, and increase its utilization value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of hardening solution

[0042] Add 1.5kg of 37% formaldehyde solution into a reactor equipped with a stirrer, thermometer and reflux condenser, heat to 50°C, add 0.63kg of melamine, adjust the pH to 8.5 with 20% sodium hydroxide, dissolve it, and continue heating To 80 ℃, constant temperature reaction, when the reactant becomes turbid, the viscosity increases, and the pH drops to about 5, stop heating and take it out, and obtain the hardening solution after cooling.

[0043] (2) Surface treatment

[0044] Add 0.05% surface treatment solution [sodium dodecylbenzenesulfonate: sodium phosphate: sodium carbonate: sodium carboxymethylcellulose=5.0:0.5:1.0:0.15 (molar ratio) to the chopped banknote paper under stirring ], until the mixture can be stirred just enough, continue to stir at room temperature for 90 minutes, then stand at constant temperature for 120 minutes, centrifuge or filter, and separate the free treatment solution. After washing twice with ...

Embodiment 2

[0052] (1) Preparation of hardening solution

[0053] Add 2.43kg of 37% formaldehyde solution in the reactor equipped with stirrer, thermometer and reflux condenser, heat to 50 ℃, add urea 1.2kg, and adjust pH to 8.5 with 20% sodium carbonate, make it dissolve, continue heating to 85°C, constant temperature reaction, when the reactant becomes turbid, the viscosity increases, and the pH drops to about 5, stop heating and take it out, and obtain the hardening solution after cooling.

[0054] (2) Surface treatment

[0055] Add 0.1% surface treatment solution [sodium lauryl sulfate: sodium tripolyphosphate: sodium hydroxide: carboxymethyl starch = 30.0:1.0:1.0:0.05 (molar ratio)] to the chopped banknote paper under stirring, Continue to stir at 50°C for 10 minutes until the mixture can still be stirred, then let it stand at constant temperature for 20 minutes, centrifuge or filter, and separate the free treatment liquid. After washing twice with water, dehydrate to remove free w...

Embodiment 3

[0063] (1) Preparation of hardening solution

[0064] Add 1.5kg of 37% formaldehyde solution into a reactor equipped with a stirrer, a thermometer and a reflux condenser, heat to 50°C, add 0.3kg of melamine and 0.6kg of urea, and adjust the pH to 8.5 with concentrated ammonia water to dissolve it, continue Heating to 85°C, constant temperature reaction, when the reactant becomes turbid, the viscosity increases, and the pH drops to about 5, stop heating and take it out, and the hardening solution is obtained after cooling.

[0065] (2) Surface treatment

[0066] Add 0.01% surface treatment solution [nonylphenol polyoxyethylene ether sodium sulfate: sodium phosphate: sodium bicarbonate: sodium alginate = 15.0:0.5:2.0:0.1 (molar ratio) to the chopped banknote paper under stirring ], until the mixture can be stirred just enough, continue to stir at room temperature for 30 minutes, then stand at constant temperature for 50 minutes, centrifuge or filter, and separate the free treat...

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Abstract

The invention discloses a preparation method of a degradable plastic filling material taking waste bank note paper as a substrate. The preparation method is characterized by comprising the following processes: preparation of a hardening liquid, surface treatment, paper hardening, pulverizing and sieving, and packaging. The hardening liquid is prepared by reacting a formaldehyde aqueous solution with a concentration of 37% with an ammonia raw material; the surface treatment of the waste bank note paper is completed by soaking with a surface treating fluid with a concentration of 0.01%-0.1% and by washing with water twice; the paper hardening is realized by kneading treatment and thermal hardening of the hardening liquid; and finally, the powdery degradable plastic filling material is obtained through sieving and packaging. According to the invention, the waste bank note paper after surface treatment is directly used for subsequent hardening and reinforcing of a resin and for crushing treatment, develops the advantage of lipotropy of the bank note paper after hydrophobic treatment, and benefits combination with the resin. Miscibility during plastic processing is improved; treatment cost of the waste bank note paper is reduced; cost balance of waste bank note paper is conveniently realized; and the economic benefit is improved.

Description

technical field [0001] The invention relates to a preparation method of a degradable plastic filler, in particular to a preparation method of a degradable plastic filler with banknote paper as a base material. Background technique [0002] As a currency in circulation, banknotes are securities and a special printed matter. Due to this characteristic, there are special requirements for its paper quality and printing, such as: water resistance, folding resistance, anti-counterfeiting, anti-fouling, and anti-fading. During circulation, some banknotes are wrinkled, torn, polluted, etc. reasons, resulting in the need for destruction and the need to prevent re-flow into the market. At present, the destruction of waste banknotes is mainly two methods of pulping and papermaking and incineration for power generation. When it is used for pulping and papermaking, it needs to remove the anti-counterfeiting ink and metal anti-counterfeiting thread. Usually it can only be used as the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/28C08L61/24C08L61/30C08L97/02D21C5/02
CPCY02W30/64
Inventor 蒋维甘纯玑连伟波邓建平
Owner FUJIAN REIDA PRECISION
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