Modified nanosilica, preparation method and application in preparation of formaldehyde-free products

A technology of nano-silica and formaldehyde removal, applied in the direction of silicon dioxide, silicon oxide, chemical instruments and methods, etc., can solve the problem of unsatisfactory effect of formaldehyde removal, and achieve the effect of decomposing harmful formaldehyde gas and large market space

Inactive Publication Date: 2018-10-12
李兵峰
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] It is understood that at present, silica is widely used as a raw material

Method used

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  • Modified nanosilica, preparation method and application in preparation of formaldehyde-free products

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preparation example Construction

[0022] (1) Preparation of drug-sensitive tablets: Take aseptic and dry filter paper pieces with a diameter of 3 cm, add 20 μL of deodorant for environmental protection and decoration dropwise to each piece, then place the filter paper pieces flat in a clean sterile plate, and dry them for later use;

[0023] (2) Preparation of negative control samples: Take sterile dry filter paper pieces with a diameter of 3 cm, add 20 μL of sterile distilled water dropwise to each piece, and dry it for later use;

[0024] (3) Drug susceptibility test by K-B disk diffusion method: use a sterile cotton swab to dip in a concentration of 5×10 6 cfu / ml test bacteria suspension, squeeze out the excess bacteria solution on the wall of the tube, spread the entire surface of the nutrient agar medium plate, and repeat 3 times; each time the plate is smeared, the plate is rotated 60 degrees to spread evenly, and finally wrap the cotton swab around Smear on the edge of the plate for a week; cover the pl...

Embodiment 1

[0039] The preparation method of deodorant for environment-friendly decoration comprises the following steps: adding 5 parts by weight of glycerol, 0.5 parts by weight of 2-imidazolidinone, 1 part by weight of sodium chloride, and 1 part by weight of lauroyl diethanolamine into 50 parts by weight of water Mix evenly, then add 3 parts by weight of nano-titanium dioxide, 7 parts by weight of nano-silicon dioxide, 40 parts by weight of plant extract, and 1 part by weight of sodium polyacrylate and mix evenly to obtain a deodorant for environmental protection decoration.

[0040] The preparation method of the plant extract is as follows: pulverize commelina to 16 mesh to obtain commelina powder; pulverize lavender to 16 mesh to obtain lavender powder; crush orientalis leaves to 16 mesh to obtain arborvitae leaves powder; mix lavender powder, commelina, and arborvitae leaf powder in a mass ratio of 1:2:2 to obtain plant raw materials; add plant raw materials to the extraction kettle...

Embodiment 2

[0042] The preparation method of deodorant for environment-friendly decoration comprises the following steps: adding 5 parts by weight of glycerol, 0.5 parts by weight of 2-imidazolidinone, 1 part by weight of sodium chloride, and 1 part by weight of lauroyl diethanolamine into 50 parts by weight of water Mix evenly, then add 3 parts by weight of nano-titanium dioxide, 7 parts by weight of modified nano-silicon dioxide, 40 parts by weight of plant extract, and 1 part by weight of sodium polyacrylate and mix evenly to obtain a deodorant for environmental protection decoration.

[0043]The preparation method of the modified nano-silica is as follows: take 10 g of nano-silica and add it to 100 mL of ethanol for ultrasonic dispersion for 2 hours. The ultrasonic power of the ultrasonic dispersion is 300 W and the ultrasonic frequency is 40 kHz. Trimethoxysilane, 0.2g artemisinin, 0.2g liquiritigenin, stirred and reacted for 5h at 80°C with a rotation speed of 150r / min to obtain a re...

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Abstract

The invention discloses modified nanosilica, a preparation method and an application in preparation of a formaldehyde-free product. The preparation method of the modified nanosilica comprises the following steps: adding 5-15 g of nanosilica to 90-120 ml of ethanol for ultrasonic dispersion for 1-3 h, adding 0.5-1.2 g of [3-(2-aminoethyl)aminopropyl]trimethoxysilane, 0.2-0.6 g of artemisinin and/orliquiritigenin, performing stirring for a reaction for 4-6 h, and performing drying. The modified nanosilica can realize effects of long-term sterilization, antibacterial performance and decomposition of harmful formaldehyde gas. The modified nanosilica has huge market space in preparation of the formaldehyde-free product.

Description

technical field [0001] The invention relates to a silicon dioxide, a preparation method and its application, in particular to a modified nano silicon dioxide, a preparation method and its application in the preparation of formaldehyde-removing products. Background technique [0002] With the improvement of people's living standards and the acceleration of urbanization, the decoration of homes and office buildings has become increasingly high-end, but the closed decoration of many rooms and the decorative materials used in the interior have caused indoor air pollution, and volatile organic compounds have become the main The concentration of air pollutants, such as formaldehyde, benzene, toluene, xylene, ammonia, etc., is much higher than the international standard, which is one of the important factors that induce various malignant tumor diseases and poses a serious threat to the physical and mental health of residents. Moreover, various volatile organic compounds usually hav...

Claims

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Application Information

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IPC IPC(8): C01B33/18B82Y40/00B01D53/81B01D53/72
CPCB01D53/72B01D53/81B82Y40/00C01B33/18C01P2004/64
Inventor 李兵峰
Owner 李兵峰
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