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Preparation method of nanometer titanium dioxide (TiO2) sound absorption paper board

A paperboard and nano technology, applied in the field of papermaking, can solve the problems of chemical synthetic sound-absorbing materials that are difficult to degrade, environmental pollution, and fiber brittleness, and achieve the effects of easy popularization and application, environmental friendliness, and simple steps.

Inactive Publication Date: 2015-05-13
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The materials for making sound-absorbing cardboard are mostly chemical synthetic or inorganic fiber materials, which have many disadvantages, such as the fiber is brittle and easy to break during construction and installation. Secondly, chemical synthetic sound-absorbing materials are difficult to degrade and easily cause environmental pollution.
Currently, nano-TiO 2 It has not been reported that particles are used as additives to prepare sound-absorbing cardboard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: a kind of nanometer TiO 2 The preparation method of sound-absorbing cardboard, the steps are as follows:

[0031] (1) Dissolve 5kg of nano-titanium dioxide particles with a particle size of 100-200nm in 20kg of ethanol with a volume fraction of 99% and stir evenly, add 2kg of silane coupling agent KH-550 and adjust the pH to 9~10, stir and react at room temperature for 0.5h to obtain emulsion A;

[0032] (2) beat the wood pulp until the degree of beating is 15 ° SR, and the wet weight is 2g to obtain a slurry; add 5kg of emulsion A to 70kg of slurry and mix evenly to obtain a pulp suspension;

[0033] (3) Add 0.02 kg of polyacrylamide with a molecular weight of 4 million as a retention aid to the pulp suspension, then add 0.05 kg of melamine formaldehyde resin with a molecular weight of 5 million, and mix evenly to obtain a mixed material;

[0034] (4) Vacuum press and filter the mixed material in a molding machine, and then dry it with hot air at 120°C ...

Embodiment 2

[0036] Embodiment 2: a kind of nanometer TiO 2 The preparation method of sound-absorbing cardboard, the steps are as follows:

[0037] (1) Dissolve 30kg of nano-titanium dioxide particles with a particle size of 100-200nm in 95kg of ethanol with a volume fraction of 99% and stir evenly, add 50kg of silane coupling agent KH-550 and adjust the pH to 9~10, stirring and reacting at room temperature for 2 hours to obtain emulsion A;

[0038] (2) Beat the wood pulp to a degree of beating of 30°SR and a wet weight of 6g to obtain a slurry; add 30 parts of emulsion A to 90 parts of the slurry and mix evenly to obtain a pulp suspension;

[0039] (3) Add 0.05 kg of polyacrylamide with a molecular weight of 6 million to the pulp suspension as a retention aid, then add 0.1 kg of melamine formaldehyde resin with a molecular weight of 20 million, and mix evenly to obtain a mixed material;

[0040] (4) Vacuum press and filter the mixed material in a molding machine, and then dry it with ho...

Embodiment 3

[0041] Embodiment 3: a kind of nanometer TiO 2 The preparation method of sound-absorbing cardboard, the steps are as follows:

[0042] (1) Dissolve 20kg of nano-titanium dioxide particles with a particle size of 200~300nm in 80kg of pure ethanol and stir evenly, add 25kg of silane coupling agent KH-560 and adjust the pH to 7~8 with a concentration of 15wt% ammonia solution at room temperature Stirring and reacting for 1 h to obtain emulsion A;

[0043] (2) Beat the wood pulp to a degree of beating of 20°SR and a wet weight of 4g to obtain a pulp; add 20kg of emulsion A to 80kg of the pulp and mix evenly to obtain a pulp suspension;

[0044] (3) Add 0.1 kg of polyacrylamide with a molecular weight of 4 million as a retention aid to the pulp suspension, then add 0.2 kg of melamine acetaldehyde resin with a molecular weight of 10 million, and mix evenly to obtain a mixed material;

[0045] (4) Vacuum press and filter the mixed material in a molding machine, and then dry it with...

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Abstract

The invention relates to a preparation method of a nanometer titanium dioxide (TiO2) sound absorption paper board. The preparation method of the nanometer TiO2 sound absorption paper board comprises the following steps: melting nanometer TiO2 granule into ethanol and evenly stirring the nanometer TiO2 granule and the ethanol, adding silane coupling agent, using ammonia solution to adjust potential of hydrogen (pH) to the range of from 6 to 10 and room temperature stirring reaction to the range of from 0.5 to 2h, and obtaining emulsion A; adding the emulsion A into sizing agent and uniformly mixing the emulsion A and the sizing agent, and obtaining pulp suspension liquid; adding polyacrylamide into the pulp suspension liquid as retention agent, and then adding melamino-formaldehyde resin or melamino-acetaldehyde resin, uniformly mixing the polyacrylamide, the pulp suspension liquid and melamino-formaldehyde resin or melamino- acetaldehyde resin, and obtaining mixed materials; drying the mixed materials after suction press filter forming. The preparation method of the nanometer TiO2 sound absorption paper board is simple, the sound absorption paper board prepared is light in weight, high in water resistance, convenient to install, good in sound absorption effect, and can be widely applied to fields such as air conditioner external unit sound attenuation and automobile sound insulation.

Description

technical field [0001] The present invention relates to a kind of nano TiO 2 The invention discloses a method for preparing sound-absorbing cardboard, belonging to the technical field of papermaking. Background technique [0002] Sound-absorbing cardboard, also known as sound-insulating cardboard, is a kind of cardboard for construction. It is used to make sound-absorbing wall covering materials for the floors of theaters, studios, etc. It can also be used for sound-absorbing decoration of air conditioners and automobiles. Sound-absorbing cardboard has a porous structure, soft texture, and has good sound-absorbing and heat-insulating properties. [0003] CN102747646A discloses an antistatic sound-absorbing paper and a preparation method thereof. The antistatic sound-absorbing paper contains plant fibers, conductive fibers and antistatic agents. The preparation method of the antistatic sound-absorbing paper comprises the following steps: (1) making a substrate from plant f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21J1/00D21H13/46D21H21/10D21H17/51D21H17/55
Inventor 王正顺
Owner QILU UNIV OF TECH