Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A formaldehyde absorption and particle technology, applied in the chemical industry, can solve problems such as low absorption efficiency, and achieve the effect of improving efficiency and increasing contact area.
Active Publication Date: 2014-01-08
XIAN UNIV OF SCI & TECH
View PDF4 Cites 23 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] Activated carbon is often used as a formaldehyde absorption material, mainly through physical adsorption to reduce the concentration of formaldehyde in the air, and the absorption efficiency is low
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0017] Add 1 gram of strongly hydrophobic calcium carbonate particles with a contact angle of 110° (calcium carbonate particles hydrophobically modified by a silane coupling agent) into 0.5 grams of a tannin aqueous solution with a mass concentration of 0.05%, at a rate of 12000 rpm Stir and disperse for 1 minute to obtain a formaldehyde-absorbing material having a water-in-air structure.
[0018] In this embodiment, every gram of formaldehyde-absorbing material can absorb 4.2 mg of formaldehyde.
Embodiment 2
[0020] This embodiment is the same as embodiment 1, wherein the difference is that the solid particles used are silicon dioxide particles, talcum particles, aluminum oxide particles, zinc oxide particles, titanium dioxide particles, montmorillonite particles, hydrotalcite particles, fly ash particles, diatomaceous earth particles, mica particles, attapulgite particles or zeolite particles, or silica particles, calcium carbonate particles, talc particles, alumina particles, zinc oxide particles, titanium dioxide particles, montmorillonite particles, hydrotalcite particles , fly ash particles, diatomite particles, mica particles, attapulgite particles and zeolite particles; Acid hydrazine, ammonium sulfate, ammonium molybdate, glycine, acrylic hydrazine polymer compound, polyacrylamide, hydroxyethyl cellulose, hexamethylenetetramine, copper sulfate, copper chloride, zinc chloride , copper nitrate, silver nitrate or ferric chloride, or tannin, urea, sodium sulfite, sodium bisulfi...
Embodiment 3
[0023] Add 1 gram of strongly hydrophobic montmorillonite particles with a contact angle of 120° (montmorillonite particles hydrophobically modified by long-chain fatty acids) into 30 grams of urea aqueous solution with a mass concentration of 20%, at a rate of 1000 rpm Stir and disperse for 30 minutes to obtain a dry water fire extinguishing agent with a water-in-gas structure.
[0024] In this embodiment, every gram of formaldehyde-absorbing material can absorb 9.8 mg of formaldehyde.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a formaldehyde absorbing material which is formed by high-hydrophobicity solid particles and aqueous solutions in a high-speed stirring mixing mode. The stirring speed of high-speed stirring operation is 1000 turns per minute to 12000 turns per minute and the stirring time is 1 minute to 30 minutes. According to the formaldehyde absorbing material, the high-hydrophobicity solid particles are adopted so as to be mixed with the aqueous solutions of substances capable of making a chemical reaction with formaldehyde, after the high-hydrophobicity solid particles and the aqueous solutions are stirred and dispersed at a high speed, the formaldehyde absorbing material of an air pocket water type structure is obtained, the formaldehyde can be absorbed by a solid shell of the material, the aqueous solutions contained in the shell can absorb the formaldehyde as well, a chemical reaction can be conducted between solute in the aqueous solutions and the formaldehyde, and therefore the formaldehyde absorbing efficiency is high. According to the formaldehyde absorbing material, the high-hydrophobicity solid particles and the aqueous solutions are mixed so that the air pocket water type structure can be formed, the contact area between the aqueous solutions and air can be increased, and therefore the formaldehyde absorbing efficiency can be improved.
Description
technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a formaldehyde absorbing material. Background technique [0002] Formaldehyde has a strong stimulating effect on the skin, eyes and respiratory tract, and has an anesthetic effect on the central nervous system. Formaldehyde coagulates proteins, is genotoxic to humans, and is also a mutagen. Low concentrations of formaldehyde can cause damage to the respiratory tract, and long-term exposure may damage the health of the respiratory system. Formaldehyde is also carcinogenic. Due to the use of artificial boards, wallpapers, foam plastics and other materials in newly decorated rooms, the indoor formaldehyde concentration is mostly higher than the national standard. [0003] Activated carbon is often used as a formaldehyde absorbing material, mainly through physical adsorption to reduce the concentration of formaldehyde in the air, and the absorption efficiency...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more