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Glass fiber mat-nano tio2 coating structure and its preparation method and application

A kind of glass fiber mat and nanotechnology, which is applied in the direction of chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of weak bonding, low loading capacity, low photocatalytic efficiency, etc., and achieve excellent Reusability, the effect of solving the low photocatalytic efficiency of TiO2

Active Publication Date: 2018-08-21
BEIJING HUATAI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Immobilization of TiO on glass fiber mats by using linear titanyl polymers of the present invention 2 The obtained glass fiber mat-nano TiO 2 The structure of the photocatalyst coating not only solves the problem of TiO prepared by the usual method 2 TiO in the coating structure 2 The problem of low loading and weak bonding has solved the problem of TiO 2 The problem of low photocatalytic efficiency, and the coating structure has excellent reusability

Method used

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  • Glass fiber mat-nano tio2 coating structure and its preparation method and application
  • Glass fiber mat-nano tio2 coating structure and its preparation method and application
  • Glass fiber mat-nano tio2 coating structure and its preparation method and application

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preparation example Construction

[0049] In the method for preparing linear titanyl polymer of the present invention, the structure of the preferred titanate is Ti(OR 1 ) 4 , where R 1 are independently selected from -C 2 h 5 ,-C 3 h 7 ,-C 4 h 9 , -C 5 h 11 . Tetrabutyl titanate is preferred.

[0050] In the method for preparing linear titanyl polymer of the present invention, preferably, the chelating agent is one or both of acetylacetone and ethyl acetoacetate.

[0051] In the method for preparing linear titanyl polymer of the present invention, preferably, the molar ratio of the titanate, chelating agent and water is 1:(0.5-1.4):(0.8-1.3).

[0052] In the method for preparing a linear titanyl polymer of the present invention, preferably in the mixed solution of water and alcohol, the alcohol is one or more of monoalcohols with 2 to 5 carbon atoms, preferably the The molar ratio of water and alcohol in the mixed solution of water and alcohol is 1:(3~20).

[0053] The linear titanium oxide polyme...

Embodiment 1

[0069] Embodiment 1: the preparation of linear titanium oxide polymer

[0070] 1) Add 1 mol of tetraisobutyl titanate into the reaction vessel, adjust the temperature to 50°C, add 0.8mol of acetylacetone, heat and stir at 50°C for 1 hour;

[0071] 2) Adjust the temperature to 80° C., drop in a mixed solution of 0.8 mol of water and 2.5 mol of isobutanol, continue heating and stirring at 80° C. for 2 hours after dropping, and remove the solvent under reduced pressure after dropping the temperature to obtain a yellow titanyl polymer.

[0072] The softening point measured by the ring and ball method is 92° C., and the number average molecular weight Mn=2750 is measured by the vapor pressure osmosis method.

[0073] Grind 1-2 mg of the obtained yellow titanyl oxide polymer and 200 mg of pure KBr evenly, place them in a mold, and press them into transparent flakes on a tablet machine for IR spectrum characterization, see Picture 1-1 ;exist Picture 1-1 Medium, 2959cm -1 、2922cm ...

Embodiment 2

[0075] Embodiment 2: the preparation of linear titanium oxide polymer

[0076] 1) Add 1 mol of tetrabutyl titanate into the reaction vessel, add 0.5 mol of acetylacetone, and heat and stir at 90° C. for 1.5 h;

[0077] 2) Adjust the temperature to 70° C., drop in a mixture of 1.2 mol of water and 6 mol of n-butanol, stir at 100° C. for 2.5 hours after dropping, and remove the solvent under reduced pressure after cooling down to obtain the titanium oxide polymer.

[0078] The softening point measured by the ring and ball method is 98° C., and the number average molecular weight Mn=2930 is measured by the vapor pressure osmosis method.

[0079] Grind 1-2 mg of the obtained titanyl polymer and 200 mg of pure KBr evenly, place it in a mold, and press it into a transparent sheet on a tablet machine for IR spectrum characterization, see Figure 2-1 ;

[0080] The resulting titanyl polymer was dissolved in deuterated chloroform for NMR characterization, the results are shown in F...

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Abstract

The invention provides a glass fiber felt-nano TiO2 photocatalyst coating structure. The glass fiber felt-nano TiO2 photocatalyst coating structure comprises a glass fiber felt matrix and a nano TiO2 coating loaded to the surface of the glass fiber felt matrix, wherein the nano TiO2 coating comprises nano TiO2 particles with the mean particle size of 10nm to 50nm, and the loaded amount of the nano TiO2 coating is 5wt% to 30wt% the weight of the glass fiber felt matrix. The invention further provides a preparation method for the glass fiber felt-nano TiO2 photocatalyst coating structure. The preparation method comprises the steps of coating the glass fiber felt matrix with a solution of a linear titanyl polymer, and carrying out drying and sintering, thereby obtaining the glass fiber felt-nano TiO2 photocatalyst coating structure. The glass fiber felt-nano TiO2 photocatalyst coating structure prepared from the linear titanyl polymer has excellent photocatalytic effect and superhydrophilic effect, can be used durably and can be applied to deodorization filters, antibacterial filters, household air-purification filters, transport vehicle purification filters, smoking room filters, household appliance purifiers and the like.

Description

technical field [0001] The present invention belongs to TiO 2 In the field of photocatalysts, especially related to glass fiber mat-nano TiO 2 Photocatalyst coating structure, its preparation method and use. Background technique [0002] In recent years, with the acceleration of the global industrialization process, the problem of environmental pollution has become increasingly serious. Environmental governance has been widely valued by governments and the general public around the world. Among them, the government has invested huge manpower, material and financial resources in environmental governance. Provide support for the research and industrialization of environmental purification technology, among which photocatalytic materials and photocatalytic technology are particularly important. The photocatalysts that scholars have researched and developed so far include TiO 2 , ZnO, WO 3 , CdS, ZnS, SnO 2 , Fe 3 o 4 etc., where TiO 2 It has many advantages such as high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J37/02
CPCB01J21/063B01J35/004B01J35/006B01J37/0217B01J37/0219
Inventor 李宇展白安洋王华范江峰
Owner BEIJING HUATAI TECH CO LTD
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