A diatomite-based formaldehyde-removing air-purifying composite material and its preparation method

A technology of air purification and composite materials, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as people's health threats, and achieve the effect of mild conditions

Active Publication Date: 2018-12-18
长春市兰亭序吉硅藻新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to GB / T18883-2002 "Indoor Air Quality Standard", the formaldehyde content in the air should be ≤0.10mg / m 3 , and the current content of formaldehyde in indoor air exceeds the national standard, which poses a serious threat to people's health.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Preparation of diatomite-based formaldehyde-removing air-purifying composite material

[0031] Raw material weight ratio:

[0032] Matrix material diatomite, 70 parts; matrix material dissolving agent caustic soda, 20 parts; skeleton material long fiber, 25 parts; skeleton material short fiber, 40 parts; surfactant, 7 parts; nitrogen-containing polymer compound polyvinylpyrrolidone , 5 parts; polymer organic amine compound triethylenetetramine, the weight part is 3 times of polyvinylpyrrolidone weight part; pH regulator boric acid, 4 parts; solvent ethanol, 90 parts; water, 100 parts.

[0033] Preparation:

[0034] Step S1, grinding the diatomaceous earth into a fine powder, the particle size of which is 40-80 μm, for later use;

[0035] Step S2, dissolving the caustic soda in water to obtain a caustic soda solution for subsequent use;

[0036] Step S3, adding the diatomite fine powder into the caustic soda solution and cooking at 80-90°C for 4-6 hours, an...

Embodiment 2

[0041] Example 2: Preparation of diatomite-based formaldehyde-removing air-purifying composite material

[0042] Raw material weight ratio:

[0043] Matrix material diatomite, 60 parts; matrix material dissolving agent caustic soda, 15 parts; skeleton material long fiber, 20 parts; skeleton material short fiber, 35 parts; surfactant, 6 parts; nitrogen-containing polymer compound polyvinylpyrrolidone , 4 parts; polymer organic amine compound triethylenetetramine, the weight part is 2 times of the weight part of polyvinylpyrrolidone; pH regulator boric acid, 3 parts; solvent ethanol, 80 parts; water, 80 parts.

[0044] Preparation:

[0045] Step S1, grinding the diatomaceous earth into a fine powder, the particle size of which is 40-80 μm, for later use;

[0046] Step S2, dissolving the caustic soda in water to obtain a caustic soda solution for subsequent use;

[0047] Step S3, adding the diatomite fine powder into the caustic soda solution and cooking at 80-90°C for 4-6 hou...

Embodiment 3

[0052] Example 3: Preparation of diatomite-based formaldehyde-removing air-purifying composite material

[0053] Raw material weight ratio:

[0054] Matrix material diatomite, 80 parts; matrix material dissolving agent caustic soda, 25 parts; skeleton material long fiber, 30 parts; skeleton material short fiber, 45 parts; surfactant, 8 parts; nitrogen-containing polymer compound polyvinylpyrrolidone , 6 parts; high molecular organic amine compound triethylenetetramine, the weight part is 4 times of the weight part of polyvinylpyrrolidone; pH regulator boric acid, 5 parts; solvent ethanol, 100 parts; water, 120 parts.

[0055] Preparation:

[0056] Step S1, grinding the diatomaceous earth into a fine powder, the particle size of which is 40-80 μm, for later use;

[0057] Step S2, dissolving the caustic soda in water to obtain a caustic soda solution for subsequent use;

[0058]Step S3, adding the diatomite fine powder into the caustic soda solution and cooking at 80-90°C for...

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Abstract

The invention discloses a diatomite-based formaldehyde scavenging and air purifying composite material and a preparation method thereof. The composite material is prepared from, by weight, 60-80 parts of a base material-diatomite, 15-25 parts of a base material dissolving agent-causic soda, 20-30 parts of long fiber framework materials, 35-45 parts of short fiber framework materials, 6-8 parts of a surfactant, 4-6 parts of a nitrogen-containing high-molecular compound-polyvinylpyrrolidone, a high-molecular organic amine compound-triethylene tetramine of which the weight part is 2-4 times of that of polyvinylpyrrolidone, 3-5 parts of a pH regulator-boric acid, 80-100 parts of a solvent-ethyl alcohol and 80-120 parts of water. The diatomite-based formaldehyde scavenging and air purifying composite material has the excellent formaldehyde scavenging effect, the preparation method is simple and feasible, the preparation cost is low, and the composite material can be used for manufacturing indoor partitions and the like and used for indoor air filtration.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a diatomite-based formaldehyde-removing air-purifying composite material and a preparation method thereof. Background technique [0002] Formaldehyde is an important organic raw material, mainly used in plastic industry, synthetic fiber, leather industry, medicine, dyestuff, etc. However, formaldehyde is significantly toxic. According to reports, formaldehyde is highly irritating to eyes, respiratory tract and skin. Exposure to formaldehyde vapor can cause conjunctivitis, keratitis, rhinitis or bronchitis, which may cause laryngospasm, glottic edema, pneumonia, pulmonary edema. In addition, formaldehyde has primary irritation and sensitization to the skin. Can cause dermatitis. Concentrated solutions can cause coagulation necrosis of the skin. Oral burns to the mouth and digestive tract, gastrointestinal perforation, shock and liver and kidney damage can occur. Long-term ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01D53/02B01J20/30
CPCB01D53/02B01D2257/708B01J20/12B01J20/26B01J2220/46
Inventor 胡智华
Owner 长春市兰亭序吉硅藻新材料有限公司
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