Composite material with formaldehyde purification function and production method thereof

A composite material and functional technology, applied in the fields of chemical industry, building materials, and light industry, can solve the problems of long absorption and conversion cycle, limited purification capacity, poor purification effect of formaldehyde, etc., and achieve remarkable purification effect

Active Publication Date: 2012-08-15
湖北格林森绿色环保材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is characterized by the use of chemical oxidation reaction to degrade formaldehyde, the cost is relatively high, and substances harmful to the body such as ozone may be produced, there are discontinuous degradation, unstable degradation effect, inconvenient use, and high volatility
The bioabsorption method is to use specific plants to absorb formaldehyde and achieve the purpose of formaldehyde absorption and transformation through photosynthesis. It is characterized by low absorption rate and long absorption and transformation cycle.
The adsorption method mainly uses solid adsorbents. At present, solid adsorbents based on various activated carbons and their products, through the adsorption principle, have poor formaldehyde purification effects and are far from meeting the requirements for purifying formaldehyde.
[0004] At present, there are several types of formaldehyde purification materials: first, porous zeolite and activated carbon-based purification materials based on physical adsorption method, formaldehyde purification is mainly adsorption, and the purification capacity is limited; second, environmental mineral materials such as Nano photocatalytic materials with sepiolite and zeolite as the carrier, use photocatalystase to catalyze the oxidation reaction to degrade formaldehyde, the cost is relatively high, the degradation is discontinuous, the degradation effect is unstable, and it is inconvenient to use; Or the inorganic macromolecular polymer forms a porous porous adsorption to formaldehyde, and then performs nucleophilic addition reaction or chemical bonding degradation to formaldehyde by the internal small molecule functional group components, the adsorption rate is low, and the absorption conversion cycle is long

Method used

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  • Composite material with formaldehyde purification function and production method thereof
  • Composite material with formaldehyde purification function and production method thereof
  • Composite material with formaldehyde purification function and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: A kind of powder with formaldehyde purification function

[0047] 1. Formula composition (substances are measured in parts by weight):

[0048] (1) 48.8 parts of natural β-calcium sulfate hemihydrate;

[0049] (2) Diatomite: 10 parts of ground diatomite powder with a particle size of 400-800 mesh;

[0050] (3) Modifier: 6 parts of compound powder uniformly mixed with 54% calcium oxide, 36% silicon oxide and 10% polyvinyl alcohol;

[0051] 2. Production and preparation process:

[0052] (1) Pretreatment of raw materials: β-calcium sulfate hemihydrate, diatomaceous earth, and modifiers are accurately measured according to 41 parts, 12 parts, 4 parts, and 2 parts respectively;

[0053] (2) After pre-mixing, it is prepared by aging in an aging warehouse for 3-15 days.

Embodiment 2

[0054] Example 2: A wood-like board with formaldehyde purification function

[0055] 1. Formula composition (substances are measured in parts by weight):

[0056] (1) 54.8 parts of natural calcium phosphate;

[0057] (2) Diatomite: 16 parts of ground diatomite powder with a particle size of 400-800 mesh;

[0058] (3) Modifier: 6 parts of compound powder uniformly mixed with 54% calcium oxide, 36% silicon oxide and 10% polyvinyl alcohol;

[0059] (4) Reinforced fiber chopped shreds: 1.20 parts of plant fiber with a length of 15-18 mm;

[0060] (5) Composite solution: clear water, crystal modifier, waterproofing agent, and defoamer are mixed and stirred according to their mass ratio of 100:1.8:0.4:0.5 to form 22 parts of a uniform compound solution. The crystal-transforming agent is sodium citrate; the waterproofing agent is sodium methyl siliconate; and the defoamer is tributyl phosphate.

[0061] 2. Production and preparation process:

[0062] (1) Pretreatment of raw mate...

Embodiment 3

[0067] Example 3: A granular composite material with formaldehyde purification function

[0068] 1. Formula composition (substances are measured in parts by weight):

[0069] (1) 54.8 parts of natural calcium aluminate;

[0070] (2) Seaweed earth: 10 parts of seaweed earth powder with a particle size of 400-800 mesh and ground;

[0071] (3) Modifier: 3 parts of compound powder uniformly mixed with 54% calcium oxide, 36% silicon oxide and 10% polyvinyl alcohol;

[0072] (4) Reinforced fiber chopped shreds: 0.8 parts of plant fiber with a length of 15-18 mm.

[0073] 2. Production and preparation process:

[0074] (1) Pretreatment of raw materials: Accurately measure calcium aluminate, seaweed, and modifiers according to the above weight parts, pre-mix them, and age them in an aging warehouse for 3 to 15 days to prepare mixed powder;

[0075] (2) Stirring of the mixture: mix the accurately measured mixed powder and plant fiber according to the above weight parts;

[0076] (...

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Abstract

The invention provides a composite material with formaldehyde purification function, which is prepared by dissolving 45-73 parts by weight of powder with formaldehyde purification function, and one or both of 0.15-1.2 parts by weight of reinforcing fiber and 15-20 parts by weight of filling material in 20-40 parts of compound solution. The powder with formaldehyde purification function is prepared by mixing 38-55 parts by weight of calcic inorganic base, 6-16 parts by weight of algae and 3-6 parts by weight of modifier; and the compound solution is compounded from 100 parts by weight of clear water, 1.5-2.0 parts by weight of crystal modifier, 0.4-0.5 part by weight of waterproofing agent and 0.4-0.5 part by weight of defoaming agent. The formaldehyde adsorption rate of the composite material is 95%, the formaldehyde purifying effect durability is up to 90%, the methylbenzene adsorption rate is 68.5%, and the methylbenzene purifying effect durability is up to 50.4%. Compared with the chemical process, biosorption process and adsorption process adopted by the traditional formaldehyde purification material, the invention has the advantages of natural and environment-friendly raw materials, obvious purifying effect, wide product derivation performance and low cost.

Description

technical field [0001] The invention belongs to the fields of building materials, light industry, chemical industry and the like, in particular to the field of building materials, and is used for improving indoor air quality. Background technique [0002] The sources of formaldehyde mainly include: (1) Urea-formaldehyde resin plywood, blockboard, medium density fiberboard and particleboard, etc. Wood-based panels and furniture made of wood-based panels; (2) Other decorative materials containing formaldehyde, such as white latex, foam plastics, paints and coatings; Textiles prepared by adding formaldehyde additives, including bedding, wall coverings, wallpaper, chemical fiber carpets, curtains and fabric furniture. (4) Treatment of formaldehyde tail gas and waste liquid in the chemical industry; from the investigation of indoor formaldehyde pollution and the analysis of various building materials, it can be seen that building materials are an important source of indoor forma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B14/08
Inventor 韦华赵弘肖富灿
Owner 湖北格林森绿色环保材料股份有限公司
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