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Slow-release formaldehyde capture agent based on ethyl cellulose tannin microspheres and preparation method

A technology of ethyl cellulose and formaldehyde scavenger, applied in the field of formaldehyde scavenger, can solve the problems of unenvironmental protection of the core layer material, poor pelletizing effect, etc., and achieves good pelletizing effect, good emulsified oil phase effect, and long release time Effect

Active Publication Date: 2021-09-24
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the present invention aims to propose a slow-release formaldehyde scavenger based on ethyl cellulose tannin microspheres and a preparation method to solve the problem of poor ball-forming effect and poor nuclear layer formation of the formaldehyde scavenger preparation method in the prior art. Technical issues with substances that are not environmentally friendly

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  • Slow-release formaldehyde capture agent based on ethyl cellulose tannin microspheres and preparation method

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Embodiment 1

[0034] The embodiment of the present invention provides a method for preparing a slow-release formaldehyde scavenger based on ethyl cellulose tannin microspheres, comprising steps:

[0035] S101, dissolving sodium tripolyphosphate in distilled water to prepare a sodium tripolyphosphate solution.

[0036] S102, taking tannin and dissolving it in distilled water to prepare an aqueous phase solution.

[0037] S103, dissolving ethyl cellulose and Tween-80 in toluene to obtain an oil phase solution.

[0038] S104, mixing the water phase solution and the oil phase solution, stirring to form an emulsion, adding sodium tripolyphosphate solution for cross-linking, cooling, washing, and drying to obtain the product.

[0039] The preparation method of the formaldehyde scavenger provided by the embodiment of the present invention uses tannin as the core material, which is environmentally friendly and reproducible; and uses sodium tripolyphosphate for cross-linking, uses toluene as the oi...

Embodiment 2

[0041] Embodiment 2 of the present invention is an embodiment of the preparation method based on ethyl cellulose tannin microsphere slow-release formaldehyde scavenger, this embodiment comprises steps:

[0042] S201, according to the ratio of adding 1.2 mg of sodium tripolyphosphate to 1 ml of distilled water, dissolve sodium tripolyphosphate in distilled water, stir at room temperature until clear and transparent, and obtain a sodium tripolyphosphate solution.

[0043] S202, according to the ratio of adding 1.5 mg of tannin to 2.5 ml of distilled water, take tannin and dissolve it in distilled water, stir at room temperature until the solution is clear and transparent, and obtain an aqueous phase solution.

[0044] S203, add 15mg ethyl cellulose and 1.5ml Tween-80 according to the ratio of 100ml toluene, take ethyl cellulose and Tween-80 and dissolve them in toluene, stir with magnetic force at 450r / min, stir for 30 minutes, and get the oil phase solution.

[0045] S204, sti...

Embodiment 3

[0050] Embodiment 3 of the present invention is another embodiment of the preparation method based on ethyl cellulose tannin microsphere slow-release formaldehyde scavenger. This embodiment includes steps:

[0051]S301, according to the ratio of adding 1.4 mg of sodium tripolyphosphate to 1 ml of distilled water, dissolve sodium tripolyphosphate in distilled water, stir at room temperature until clear and transparent, and obtain a sodium tripolyphosphate solution.

[0052] S302, according to the ratio of adding 2.5 mg of tannin to 2.5 ml of distilled water, take tannin and dissolve it in distilled water, stir at room temperature until the solution is clear and transparent, and obtain an aqueous phase solution.

[0053] S303, add 25mg ethyl cellulose and 2.5ml Tween-80 according to the ratio of 100ml toluene, take ethyl cellulose and Tween-80 and dissolve them in toluene, stir with magnetic force at 550r / min, stir for 30 minutes, and get the oil phase solution.

[0054] S304, ...

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Abstract

The present invention proposes a method for preparing a slow-release formaldehyde scavenger based on ethyl cellulose tannin microspheres. The method comprises the steps of: taking sodium tripolyphosphate and dissolving it in distilled water to obtain a sodium tripolyphosphate solution; taking tannin and dissolving it in Aqueous phase solution was obtained in distilled water; ethyl cellulose and Tween-80 were dissolved in toluene to obtain an oil phase solution; the aqueous phase solution and the oil phase solution were mixed and stirred to form an emulsion, and then sodium tripolyphosphate solution was added for crossover Combined, washed after cooling, and dried. The invention also proposes a slow-release formaldehyde capture agent based on ethyl cellulose tannin microspheres, which is prepared by the preparation method. The slow-release formaldehyde capture agent based on ethyl cellulose tannin microspheres and the preparation method of the present invention are more environmentally friendly, have good ball forming effect, and are more conducive to continuous capture of formaldehyde.

Description

technical field [0001] The invention relates to the technical field of formaldehyde scavenger, in particular to a slow-release formaldehyde scavenger based on ethyl cellulose tannin microspheres and a preparation method. Background technique [0002] Indoor air pollution has become the cause of various diseases, and formaldehyde is the main source of indoor air pollution. The main hazard of formaldehyde is the irritation to the skin and mucous membranes, and the indoor formaldehyde concentration is greater than 0.08mg / m 3 Sometimes it can cause throat discomfort, chest tightness, asthma, dermatitis and many other symptoms. At present, most of the wood-based panels are bonded with urea-formaldehyde resin glue, and urea-formaldehyde resin glue is made of formaldehyde, which will continuously release formaldehyde. Therefore, how to continuously capture and degrade the formaldehyde released from wood-based panels has become a technical field. There are always technical problem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/72
CPCB01D53/72B01D53/81B01D2258/06
Inventor 刘玉程进胡润生朱晓冬王巍聪
Owner NORTHEAST FORESTRY UNIVERSITY