A dust-proof and antistatic inorganic composite coating and its preparation method

An inorganic composite and antistatic technology, applied in the direction of antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problem of no effect of dust adhesion, achieve the effect of improving durability and solving instability

Inactive Publication Date: 2015-11-18
NANJING BEILIDA NEW MATERIAL SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the inorganic building material itself is not conductive, when the hydrophobic surface is dry, it is still easy to accumulate static electricity, so the surface will still absorb dust due to static electricity; the second is to prepare a film layer with surfactant on the surface of the inorganic building material, which can prevent Dust adhesion caused by chemical bonding, but it has no effect on dust adhesion caused by electrostatic force and water adsorption. At present, there are no reports on coatings that can both prevent dust and play an antistatic role

Method used

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  • A dust-proof and antistatic inorganic composite coating and its preparation method
  • A dust-proof and antistatic inorganic composite coating and its preparation method
  • A dust-proof and antistatic inorganic composite coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Add 1kg of tetramethoxysilane aqueous solution and 0.43kg of trimethoxysilane aqueous solution with a concentration of 10wt% to 28.57kg of methanol at room temperature, and stir for 10min to obtain a siloxane alcohol solution;

[0034] 2) Heat 10kg of oxalic acid aqueous solution with a concentration of 5wt% to 70°C, add a mixture consisting of 7.28kg of hydrogen peroxide and 24.93kg of metal Sn powder, and heat at 90°C for 1 hour to end the reaction to obtain SnO 2 Sol 50kg; To obtain SnO 2 Add 0.53kg of HF to the sol, adjust the pH to 10 with ammonia water, stir for 10 minutes, add it to the polytetrafluoroethylene sleeve, and then keep it at 150 ° C for 2 hours to prepare antistatic doped SnO 2 transparent aqueous solution;

[0035] 3) Combine 0.05kgNaOH and 1.45kgNa 2 SiO3 Add to 48.5kg of distilled water, stir for 1 hour, and prepare the inorganic binder;

[0036] 4) Add 3 kg of the siloxane alcohol solution prepared in step 1 to 87 kg of methanol, and then a...

Embodiment 2

[0042] 1) Add 2.44kg of tetraethoxysilane aqueous solution with a concentration of 20wt% to 97.56kg of ethanol at room temperature, and stir for 60min to obtain a siloxane alcohol solution;

[0043] 2) Heat 11.43kg of citric acid aqueous solution with a concentration of 10wt% to 70°C, add 4.64kg of hydrogen peroxide and 50.02kg of Sn(NO 3 ) 4 After heating the mixture at 90°C for 1h, the reaction was terminated to obtain SnO 2 Sol 80kg; To obtain SnO 2 Add 7.7kg of FNH to the sol 4 , and adjust the PH=10 with ammonia water, stir for 60min, add it into the polytetrafluoroethylene sleeve, and then keep it at 150℃ for 6h to obtain antistatic doped SnO 2 transparent aqueous solution;

[0044] 3) Combine 0.5kg of KOH and 0.15kg of K 2 SiO 3 Added into 8kg of distilled water, stirred for 3h, and prepared an inorganic binder;

[0045] 4) Add 10kg of the siloxane alcohol solution obtained in step 1 to 81kg of ethanol, and then add 8kg of the antistatic doped SnO obtained in ste...

Embodiment 3

[0047] 1) Add 0.97kg of 15wt% dimethyldimethoxysilane aqueous solution to 29.03kg of propanol at room temperature, and stir for 40min to obtain a siloxane alcohol solution;

[0048] 2) Heat 3.3kg of oxalic acid aqueous solution with a concentration of 8wt% to 70°C, add 1.38kg of hydrogen peroxide and 12.57kg of Sn(SO 4 ) 2 After heating the mixture at 90°C for 1h, the reaction was terminated to obtain SnO 2 Sol 20kg; in the obtained SnO 2 Add 0.63kg of HF to the sol, adjust the pH to 11 with ammonia water, stir for 40 minutes, add it to the polytetrafluoroethylene sleeve, and then keep it at 150°C for 4 hours to obtain antistatic doped SnO 2 transparent aqueous solution;

[0049] 3) Add 0.3kg of Ca(OH) 2 and 0.5kg of CaSiO 3 Add to 9.2kg of distilled water, stir for 2 hours to obtain an inorganic binder;

[0050] 4) Add 3kg of the siloxane alcohol solution obtained in step 1 to 94kg of propanol, and then add 2kg of the antistatic doped SnO obtained in step 2 2 Transpare...

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Abstract

The invention discloses a dustproof antistatic inorganic composite coating and a preparation method thereof. The coating includes the following components in parts by weight: 3-10 parts of siloxane alcohol solution, 2-8 parts of antstatic doped SnO2 solution, 1-5 parts of inorganic binder and 80-94 parts of alcohol. The preparation method comprises the following steps: adding the siloxane alcohol solution and the antstatic doped SnO2 aqueous solution in the alcohol solution, reacting for 0.5-5 hours, and adding the inorganic binder, stewing to react for 1-7 days to obtain the dustproof antistatic inorganic composite coating. The coating disclosed by the invention can effectively block small dust from entering the pores of a board to generate permanent pollution to a coated film by means of electrostatic interaction, achieves self-cleaning after being brushed by rainwater, and meanwhile, can form a protection film on the surface of a building material to form a waterproof layer, in order to achieve a waterproof function.

Description

technical field [0001] The invention relates to the field of nano coatings for construction, in particular to a dustproof and antistatic inorganic composite coating and a preparation method thereof. Background technique [0002] Inorganic building materials such as stone, brick, tile, and newly emerging fiber-reinforced cement materials or fiber-reinforced gypsum materials have been widely used in construction due to their excellent modeling ability, rich expressiveness and good performance. However, due to environmental pollution, dirt is usually adhered to the surface of the exterior wall constructed of these building materials, causing serious damage to the appearance of the building, requiring a huge cost of manpower and material resources to maintain the beauty of the building. [0003] The reason why pollutants adhere to the surface of building exterior walls is that the surface of building materials has the energy to adsorb foreign molecules, that is, surface energy. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D7/12C09D5/16
Inventor 熊吉如王剑陶婷婷王猛
Owner NANJING BEILIDA NEW MATERIAL SYST ENG
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