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Nano-silver colloid formaldehyde remover

A formaldehyde remover, nano-silver glue technology, applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve problems such as exceeding the standard, and achieve the effect of purifying living space and effectively removing

Inactive Publication Date: 2015-08-19
SHANGHAI TAOHONG CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the "Hygienic Standards for Formaldehyde in Indoor Air" (GB / T 16127-1995) of the People's Republic of China, the upper limit of the allowable concentration of formaldehyde in the living room is 0.08mg / m 3 , but the average concentration of formaldehyde after decoration in general residential buildings is 0.2mg / m 3 , up to 0.81mg / m 3 , seriously exceeding the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0023] Example 1-3 Preparation of Nano Silver Gel

[0024] The 0.1 wt% cyclodextrin aqueous solution and the silver ammonia solution with a molar concentration of 0.1 mol / L were mixed at a volume ratio of 1:50, and stirred at a temperature of 80°C for 40 minutes to obtain an average particle size of 5 20nm nano silver glue.

[0025] The method for preparing the silver ammonia solution is as follows: add 0.1 mol / L sodium hydroxide solution dropwise to 1.0 mol / L silver nitrate solution, white precipitation appears, and then drop 5wt% ammonia solution until the white precipitation disappears, and the quality A silver ammonia solution with a molar concentration of 0.1 mol / L.

[0026] among them,

[0027] The cyclodextrin in the cyclodextrin aqueous solution in Example 1 is 2-O-(hydroxypropyl-N,N-dimethyl-N-hexadecylammonium)-β-cyclodextrin.

[0028] The cyclodextrin in the cyclodextrin aqueous solution in Example 2 is 2-O-(hydroxypropyl-N,N-dimethyl-N-octadecylammonium)-β-cyclodextrin.

[...

Embodiment 4-8

[0030] Example 4-8 Preparation of Nano Silver Gel Formaldehyde Remover

[0031] The raw materials corresponding to each embodiment in Table 1 are mixed and stirred uniformly to prepare the nano-silver glue formaldehyde remover of the present invention.

[0032] Table 1: Formaldehyde remover formula of nano silver glue unit: kg

[0033]

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PUM

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Abstract

The invention provides nano-silver colloid formaldehyde remover which is prepared from the following components in percentage by weight: 1-3% of lauryl glucoside, 2-6% of formaldehyde trapping agent, 4-8% of nano-silver colloid and the balance of water. The nano-silver colloid formaldehyde remover provided by the invention can completely and effectively remove formaldehyde pollutants and purify living spaces.

Description

Technical field [0001] The invention relates to a formaldehyde remover, in particular to a nano silver glue formaldehyde remover. Background technique [0002] Formaldehyde is one of the most serious indoor organic gas pollutants. It has very high toxicity. In June 2004, a report published by the International Center for Cancer Research (IARC) of the World Health Organization stated that high concentrations of formaldehyde can cause ear, nose, and throat cancer. For other physical diseases, on the priority control list of toxic chemicals in my country, the first is dioxin, and the second is formaldehyde. Therefore, formaldehyde is extremely harmful to human health. Nowadays, it is more and more common for people to decorate offices, meeting rooms and living rooms, and the requirements for the airtightness of the space are getting higher and higher, making the exchange of indoor and outdoor air less and less. When the national health, construction and environmental protection depa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00
Inventor 宋国新黄毅
Owner SHANGHAI TAOHONG CHEM TECH
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